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<div class="refentry">
<a name="cogl-2.0-experimental-Pipeline"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="cogl-2.0-experimental-Pipeline.top_of_page"></a>Pipeline</span></h2>
<p>Pipeline — Functions for creating and manipulating the GPU
pipeline</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Pipeline.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="returnvalue">CoglPipeline</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-new" title="cogl_pipeline_new ()">cogl_pipeline_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="returnvalue">CoglPipeline</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-copy" title="cogl_pipeline_copy ()">cogl_pipeline_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-is-pipeline" title="cogl_is_pipeline ()">cogl_is_pipeline</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-color" title="cogl_pipeline_set_color ()">cogl_pipeline_set_color</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-color4ub" title="cogl_pipeline_set_color4ub ()">cogl_pipeline_set_color4ub</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-color4f" title="cogl_pipeline_set_color4f ()">cogl_pipeline_set_color4f</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-color" title="cogl_pipeline_get_color ()">cogl_pipeline_get_color</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-ambient" title="cogl_pipeline_set_ambient ()">cogl_pipeline_set_ambient</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-ambient" title="cogl_pipeline_get_ambient ()">cogl_pipeline_get_ambient</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-diffuse" title="cogl_pipeline_set_diffuse ()">cogl_pipeline_set_diffuse</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-diffuse" title="cogl_pipeline_get_diffuse ()">cogl_pipeline_get_diffuse</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-ambient-and-diffuse" title="cogl_pipeline_set_ambient_and_diffuse ()">cogl_pipeline_set_ambient_and_diffuse</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-emission" title="cogl_pipeline_set_emission ()">cogl_pipeline_set_emission</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-emission" title="cogl_pipeline_get_emission ()">cogl_pipeline_get_emission</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-specular" title="cogl_pipeline_set_specular ()">cogl_pipeline_set_specular</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-specular" title="cogl_pipeline_get_specular ()">cogl_pipeline_get_specular</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-shininess" title="cogl_pipeline_set_shininess ()">cogl_pipeline_set_shininess</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">float</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-shininess" title="cogl_pipeline_get_shininess ()">cogl_pipeline_get_shininess</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-alpha-test-function" title="cogl_pipeline_set_alpha_test_function ()">cogl_pipeline_set_alpha_test_function</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-BLEND-STRING-ERROR:CAPS" title="COGL_BLEND_STRING_ERROR">COGL_BLEND_STRING_ERROR</a></td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-blend" title="cogl_pipeline_set_blend ()">cogl_pipeline_set_blend</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-blend-constant" title="cogl_pipeline_set_blend_constant ()">cogl_pipeline_set_blend_constant</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-point-size" title="cogl_pipeline_set_point_size ()">cogl_pipeline_set_point_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">float</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-point-size" title="cogl_pipeline_get_point_size ()">cogl_pipeline_get_point_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-per-vertex-point-size" title="cogl_pipeline_set_per_vertex_point_size ()">cogl_pipeline_set_per_vertex_point_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-per-vertex-point-size" title="cogl_pipeline_get_per_vertex_point_size ()">cogl_pipeline_get_per_vertex_point_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="returnvalue">CoglColorMask</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-color-mask" title="cogl_pipeline_get_color_mask ()">cogl_pipeline_get_color_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-color-mask" title="cogl_pipeline_set_color_mask ()">cogl_pipeline_set_color_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-depth-state" title="cogl_pipeline_set_depth_state ()">cogl_pipeline_set_depth_state</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-depth-state" title="cogl_pipeline_get_depth_state ()">cogl_pipeline_get_depth_state</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-cull-face-mode" title="cogl_pipeline_set_cull_face_mode ()">cogl_pipeline_set_cull_face_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-front-face-winding" title="cogl_pipeline_set_front_face_winding ()">cogl_pipeline_set_front_face_winding</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-texture" title="cogl_pipeline_set_layer_texture ()">cogl_pipeline_set_layer_texture</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-null-texture" title="cogl_pipeline_set_layer_null_texture ()">cogl_pipeline_set_layer_null_texture</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="returnvalue">CoglTexture</span></a> *
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-layer-texture" title="cogl_pipeline_get_layer_texture ()">cogl_pipeline_get_layer_texture</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-filters" title="cogl_pipeline_set_layer_filters ()">cogl_pipeline_set_layer_filters</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="returnvalue">CoglPipelineFilter</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-layer-min-filter" title="cogl_pipeline_get_layer_min_filter ()">cogl_pipeline_get_layer_min_filter</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="returnvalue">CoglPipelineFilter</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-layer-mag-filter" title="cogl_pipeline_get_layer_mag_filter ()">cogl_pipeline_get_layer_mag_filter</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode" title="cogl_pipeline_set_layer_wrap_mode ()">cogl_pipeline_set_layer_wrap_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode-s" title="cogl_pipeline_set_layer_wrap_mode_s ()">cogl_pipeline_set_layer_wrap_mode_s</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode-t" title="cogl_pipeline_set_layer_wrap_mode_t ()">cogl_pipeline_set_layer_wrap_mode_t</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode-p" title="cogl_pipeline_set_layer_wrap_mode_p ()">cogl_pipeline_set_layer_wrap_mode_p</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-combine" title="cogl_pipeline_set_layer_combine ()">cogl_pipeline_set_layer_combine</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-combine-constant" title="cogl_pipeline_set_layer_combine_constant ()">cogl_pipeline_set_layer_combine_constant</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-matrix" title="cogl_pipeline_set_layer_matrix ()">cogl_pipeline_set_layer_matrix</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-point-sprite-coords-enabled" title="cogl_pipeline_set_layer_point_sprite_coords_enabled ()">cogl_pipeline_set_layer_point_sprite_coords_enabled</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-layer-point-sprite-coords-enabled" title="cogl_pipeline_get_layer_point_sprite_coords_enabled ()">cogl_pipeline_get_layer_point_sprite_coords_enabled</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-remove-layer" title="cogl_pipeline_remove_layer ()">cogl_pipeline_remove_layer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-n-layers" title="cogl_pipeline_get_n_layers ()">cogl_pipeline_get_n_layers</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineLayerCallback" title="CoglPipelineLayerCallback ()">*CoglPipelineLayerCallback</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-foreach-layer" title="cogl_pipeline_foreach_layer ()">cogl_pipeline_foreach_layer</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-uniform-location" title="cogl_pipeline_get_uniform_location ()">cogl_pipeline_get_uniform_location</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-uniform-1f" title="cogl_pipeline_set_uniform_1f ()">cogl_pipeline_set_uniform_1f</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-uniform-1i" title="cogl_pipeline_set_uniform_1i ()">cogl_pipeline_set_uniform_1i</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-uniform-float" title="cogl_pipeline_set_uniform_float ()">cogl_pipeline_set_uniform_float</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-uniform-int" title="cogl_pipeline_set_uniform_int ()">cogl_pipeline_set_uniform_int</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-uniform-matrix" title="cogl_pipeline_set_uniform_matrix ()">cogl_pipeline_set_uniform_matrix</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-add-snippet" title="cogl_pipeline_add_snippet ()">cogl_pipeline_add_snippet</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-add-layer-snippet" title="cogl_pipeline_add_layer_snippet ()">cogl_pipeline_add_layer_snippet</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Pipeline.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline">CoglPipeline</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineAlphaFunc" title="enum CoglPipelineAlphaFunc">CoglPipelineAlphaFunc</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglBlendStringError" title="enum CoglBlendStringError">CoglBlendStringError</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineCullFaceMode" title="enum CoglPipelineCullFaceMode">CoglPipelineCullFaceMode</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglWinding" title="enum CoglWinding">CoglWinding</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter">CoglPipelineFilter</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineWrapMode" title="enum CoglPipelineWrapMode">CoglPipelineWrapMode</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Pipeline.description"></a><h2>Description</h2>
<p>Cogl allows creating and manipulating objects representing the full
configuration of the GPU pipeline. In simplified terms the GPU
pipeline takes primitive geometry as the input, it first performs
vertex processing, allowing you to deform your geometry, then
rasterizes that (turning it from pure geometry into fragments) then
performs fragment processing including depth testing and texture
mapping. Finally it blends the result with the framebuffer.</p>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Pipeline.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="cogl-pipeline-new"></a><h3>cogl_pipeline_new ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="returnvalue">CoglPipeline</span></a> *
cogl_pipeline_new (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a> *context</code></em>);</pre>
<p>Allocates and initializes a default simple pipeline that will color
a primitive white.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>context</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#CoglContext" title="CoglContext"><span class="type">CoglContext</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.2.6"></a><h4>Returns</h4>
<p> a pointer to a new <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-copy"></a><h3>cogl_pipeline_copy ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="returnvalue">CoglPipeline</span></a> *
cogl_pipeline_copy (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *source</code></em>);</pre>
<p>Creates a new pipeline with the configuration copied from the
source pipeline.</p>
<p>We would strongly advise developers to always aim to use
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-copy" title="cogl_pipeline_copy ()"><code class="function">cogl_pipeline_copy()</code></a> instead of <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-new" title="cogl_pipeline_new ()"><code class="function">cogl_pipeline_new()</code></a> whenever there will
be any similarity between two pipelines. Copying a pipeline helps Cogl
keep track of a pipelines ancestry which we may use to help minimize GPU
state changes.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.3.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>source</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object to copy</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.3.7"></a><h4>Returns</h4>
<p> a pointer to the newly allocated <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-is-pipeline"></a><h3>cogl_is_pipeline ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_is_pipeline (<em class="parameter"><code><span class="type">void</span> *object</code></em>);</pre>
<p>Gets whether the given <em class="parameter"><code>object</code></em>
references an existing pipeline object.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>object</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-The-Object-Interface.html#CoglObject" title="CoglObject"><span class="type">CoglObject</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.4.6"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the <em class="parameter"><code>object</code></em>
references a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a>,
<code class="literal">FALSE</code> otherwise</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-color"></a><h3>cogl_pipeline_set_color ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_color (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *color</code></em>);</pre>
<p>Sets the basic color of the pipeline, used when no lighting is enabled.</p>
<p>Note that if you don't add any layers to the pipeline then the color
will be blended unmodified with the destination; the default blend
expects premultiplied colors: for example, use (0.5, 0.0, 0.0, 0.5) for
semi-transparent red. See <a class="link" href="cogl-2.0-experimental-Color-Type.html#cogl-color-premultiply" title="cogl_color_premultiply ()"><code class="function">cogl_color_premultiply()</code></a>.</p>
<p>The default value is (1.0, 1.0, 1.0, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.5.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>color</p></td>
<td class="parameter_description"><p>The components of the color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-color4ub"></a><h3>cogl_pipeline_set_color4ub ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_color4ub (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> red</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> green</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> blue</code></em>,
<em class="parameter"><code><span class="type">uint8_t</span> alpha</code></em>);</pre>
<p>Sets the basic color of the pipeline, used when no lighting is enabled.</p>
<p>The default value is (0xff, 0xff, 0xff, 0xff)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.6.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>red</p></td>
<td class="parameter_description"><p>The red component</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>green</p></td>
<td class="parameter_description"><p>The green component</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blue</p></td>
<td class="parameter_description"><p>The blue component</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>alpha</p></td>
<td class="parameter_description"><p>The alpha component</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-color4f"></a><h3>cogl_pipeline_set_color4f ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_color4f (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> red</code></em>,
<em class="parameter"><code><span class="type">float</span> green</code></em>,
<em class="parameter"><code><span class="type">float</span> blue</code></em>,
<em class="parameter"><code><span class="type">float</span> alpha</code></em>);</pre>
<p>Sets the basic color of the pipeline, used when no lighting is enabled.</p>
<p>The default value is (1.0, 1.0, 1.0, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.7.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>red</p></td>
<td class="parameter_description"><p>The red component</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>green</p></td>
<td class="parameter_description"><p>The green component</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blue</p></td>
<td class="parameter_description"><p>The blue component</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>alpha</p></td>
<td class="parameter_description"><p>The alpha component</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-color"></a><h3>cogl_pipeline_get_color ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_get_color (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *color</code></em>);</pre>
<p>Retrieves the current pipeline color.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.8.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>color</p></td>
<td class="parameter_description"><p> The location to store the color. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-ambient"></a><h3>cogl_pipeline_set_ambient ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_ambient (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *ambient</code></em>);</pre>
<p>Sets the pipeline's ambient color, in the standard OpenGL lighting
model. The ambient color affects the overall color of the object.</p>
<p>Since the diffuse color will be intense when the light hits the surface
directly, the ambient will be most apparent where the light hits at a
slant.</p>
<p>The default value is (0.2, 0.2, 0.2, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.9.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>ambient</p></td>
<td class="parameter_description"><p>The components of the desired ambient color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-ambient"></a><h3>cogl_pipeline_get_ambient ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_get_ambient (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *ambient</code></em>);</pre>
<p>Retrieves the current ambient color for <em class="parameter"><code>pipeline</code></em>
</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.10.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>ambient</p></td>
<td class="parameter_description"><p>The location to store the ambient color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-diffuse"></a><h3>cogl_pipeline_set_diffuse ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_diffuse (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *diffuse</code></em>);</pre>
<p>Sets the pipeline's diffuse color, in the standard OpenGL lighting
model. The diffuse color is most intense where the light hits the
surface directly - perpendicular to the surface.</p>
<p>The default value is (0.8, 0.8, 0.8, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.11.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>diffuse</p></td>
<td class="parameter_description"><p>The components of the desired diffuse color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-diffuse"></a><h3>cogl_pipeline_get_diffuse ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_get_diffuse (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *diffuse</code></em>);</pre>
<p>Retrieves the current diffuse color for <em class="parameter"><code>pipeline</code></em>
</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.12.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>diffuse</p></td>
<td class="parameter_description"><p>The location to store the diffuse color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-ambient-and-diffuse"></a><h3>cogl_pipeline_set_ambient_and_diffuse ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_ambient_and_diffuse (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *color</code></em>);</pre>
<p>Conveniently sets the diffuse and ambient color of <em class="parameter"><code>pipeline</code></em>
at the same
time. See <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-ambient" title="cogl_pipeline_set_ambient ()"><code class="function">cogl_pipeline_set_ambient()</code></a> and <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-diffuse" title="cogl_pipeline_set_diffuse ()"><code class="function">cogl_pipeline_set_diffuse()</code></a>.</p>
<p>The default ambient color is (0.2, 0.2, 0.2, 1.0)</p>
<p>The default diffuse color is (0.8, 0.8, 0.8, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.13.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>color</p></td>
<td class="parameter_description"><p>The components of the desired ambient and diffuse colors</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-emission"></a><h3>cogl_pipeline_set_emission ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_emission (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *emission</code></em>);</pre>
<p>Sets the pipeline's emissive color, in the standard OpenGL lighting
model. It will look like the surface is a light source emitting this
color.</p>
<p>The default value is (0.0, 0.0, 0.0, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.14.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>emission</p></td>
<td class="parameter_description"><p>The components of the desired emissive color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-emission"></a><h3>cogl_pipeline_get_emission ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_get_emission (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *emission</code></em>);</pre>
<p>Retrieves the pipelines current emission color.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.15.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>emission</p></td>
<td class="parameter_description"><p>The location to store the emission color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-specular"></a><h3>cogl_pipeline_set_specular ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_specular (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *specular</code></em>);</pre>
<p>Sets the pipeline's specular color, in the standard OpenGL lighting
model. The intensity of the specular color depends on the viewport
position, and is brightest along the lines of reflection.</p>
<p>The default value is (0.0, 0.0, 0.0, 1.0)</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.16.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>specular</p></td>
<td class="parameter_description"><p>The components of the desired specular color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-specular"></a><h3>cogl_pipeline_get_specular ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_get_specular (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *specular</code></em>);</pre>
<p>Retrieves the pipelines current specular color.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.17.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>specular</p></td>
<td class="parameter_description"><p>The location to store the specular color</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-shininess"></a><h3>cogl_pipeline_set_shininess ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_shininess (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> shininess</code></em>);</pre>
<p>Sets the shininess of the pipeline, in the standard OpenGL lighting
model, which determines the size of the specular highlights. A
higher <em class="parameter"><code>shininess</code></em>
will produce smaller highlights which makes the
object appear more shiny.</p>
<p>The default value is 0.0</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.18.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>shininess</p></td>
<td class="parameter_description"><p>The desired shininess; must be >= 0.0</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-shininess"></a><h3>cogl_pipeline_get_shininess ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span>
cogl_pipeline_get_shininess (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>);</pre>
<p>Retrieves the pipelines current emission color.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.19.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.19.6"></a><h4>Returns</h4>
<p> The pipelines current shininess value</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-alpha-test-function"></a><h3>cogl_pipeline_set_alpha_test_function ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_alpha_test_function (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineAlphaFunc" title="enum CoglPipelineAlphaFunc"><span class="type">CoglPipelineAlphaFunc</span></a> alpha_func</code></em>,
<em class="parameter"><code><span class="type">float</span> alpha_reference</code></em>);</pre>
<p>Before a primitive is blended with the framebuffer, it goes through an
alpha test stage which lets you discard fragments based on the current
alpha value. This function lets you change the function used to evaluate
the alpha channel, and thus determine which fragments are discarded
and which continue on to the blending stage.</p>
<p>The default is <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-ALPHA-FUNC-ALWAYS:CAPS"><code class="literal">COGL_PIPELINE_ALPHA_FUNC_ALWAYS</code></a></p>
<div class="refsect3">
<a name="id-1.2.5.3.6.20.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>alpha_func</p></td>
<td class="parameter_description"><p>A <em class="parameter"><code>CoglPipelineAlphaFunc</code></em>
constant</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>alpha_reference</p></td>
<td class="parameter_description"><p>A reference point that the chosen alpha function uses
to compare incoming fragments to.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="COGL-BLEND-STRING-ERROR:CAPS"></a><h3>COGL_BLEND_STRING_ERROR</h3>
<pre class="programlisting">#define COGL_BLEND_STRING_ERROR (cogl_blend_string_error_quark ())
</pre>
<p><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> domain for blend string parser errors</p>
<p class="since">Since 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-blend"></a><h3>cogl_pipeline_set_blend ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_set_blend (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *blend_string</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>If not already familiar; please refer <a class="link" href="cogl-Blend-Strings.html" title="Blend Strings">here</a>
for an overview of what blend strings are, and their syntax.</p>
<p>Blending occurs after the alpha test function, and combines fragments with
the framebuffer.</p>
<p>Currently the only blend function Cogl exposes is <code class="function">ADD()</code>. So any valid
blend statements will be of the form:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="gtkdoc opt"><</span>channel<span class="gtkdoc opt">-</span>mask<span class="gtkdoc opt">>=</span><span class="function">ADD</span><span class="gtkdoc opt">(</span>SRC_COLOR<span class="gtkdoc opt">*(<</span>factor<span class="gtkdoc opt">>),</span> DST_COLOR<span class="gtkdoc opt">*(<</span>factor<span class="gtkdoc opt">>))</span></pre></td>
</tr>
</tbody>
</table>
</div>
<p></p>
<p>This is the list of source-names usable as blend factors:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>SRC_COLOR: The color of the in comming fragment</p></li>
<li class="listitem"><p>DST_COLOR: The color of the framebuffer</p></li>
<li class="listitem"><p>CONSTANT: The constant set via <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-blend-constant" title="cogl_pipeline_set_blend_constant ()"><code class="function">cogl_pipeline_set_blend_constant()</code></a></p></li>
</ul></div>
<p>The source names can be used according to the</p>
<a class="link" href="cogl-Blend-Strings.html#cogl-Blend-String-syntax" title="Here's the syntax">color-source and factor syntax</a>,
<p>so for example "(1-SRC_COLOR[A])" would be a valid factor, as would
"(CONSTANT[RGB])"</p>
<p>These can also be used as factors:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">0: (0, 0, 0, 0)</li>
<li class="listitem">1: (1, 1, 1, 1)</li>
<li class="listitem">SRC_ALPHA_SATURATE_FACTOR: (f,f,f,1) where f = MIN(SRC_COLOR[A],1-DST_COLOR[A])</li>
</ul></div>
<div class="note">Remember; all color components are normalized to the range [0, 1]
before computing the result of blending.</div>
<div class="example">
<a name="cogl-Blend-Strings-blend-unpremul"></a><p class="title"><b>Example 1. Blend Strings/1</b></p>
<div class="example-contents">
<p>Blend a non-premultiplied source over a destination with
premultiplied alpha:</p>
<pre class="programlisting">
"RGB = ADD(SRC_COLOR*(SRC_COLOR[A]), DST_COLOR*(1-SRC_COLOR[A]))"
"A = ADD(SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))"
</pre>
</div>
</div>
<br class="example-break"><div class="example">
<a name="cogl-Blend-Strings-blend-premul"></a><p class="title"><b>Example 2. Blend Strings/2</b></p>
<div class="example-contents">
<p>Blend a premultiplied source over a destination with
premultiplied alpha</p>
<pre class="programlisting">
"RGBA = ADD(SRC_COLOR, DST_COLOR*(1-SRC_COLOR[A]))"
</pre>
</div>
</div>
<br class="example-break"><p>The default blend string is:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">RGBA <span class="gtkdoc opt">=</span> <span class="function">ADD</span> <span class="gtkdoc opt">(</span>SRC_COLOR<span class="gtkdoc opt">,</span> DST_COLOR<span class="gtkdoc opt">*(</span><span class="number">1</span><span class="gtkdoc opt">-</span>SRC_COLOR<span class="gtkdoc opt">[</span>A<span class="gtkdoc opt">]))</span></pre></td>
</tr>
</tbody>
</table>
</div>
<p></p>
<p>That gives normal alpha-blending when the calculated color for the pipeline
is in premultiplied form.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.22.23"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blend_string</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-Blend-Strings.html" title="Blend Strings">Cogl blend string</a>
describing the desired blend function.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> that may report lack of driver
support if you give separate blend string statements for the alpha
channel and RGB channels since some drivers, or backends such as
GLES 1.1, don't support this feature. May be <code class="literal">NULL</code>, in which case a
warning will be printed out using GLib's logging facilities if an
error is encountered.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.22.24"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the blend string was successfully parsed, and the
described blending is supported by the underlying driver/hardware. If
there was an error, <code class="literal">FALSE</code> is returned and <em class="parameter"><code>error</code></em>
is set accordingly (if
present).</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-blend-constant"></a><h3>cogl_pipeline_set_blend_constant ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_blend_constant (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *constant_color</code></em>);</pre>
<p>When blending is setup to reference a CONSTANT blend factor then
blending will depend on the constant set with this function.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.23.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>constant_color</p></td>
<td class="parameter_description"><p>The constant color you want</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-point-size"></a><h3>cogl_pipeline_set_point_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_point_size (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">float</span> point_size</code></em>);</pre>
<p>Changes the size of points drawn when <a class="link" href="cogl-2.0-experimental-Common-Types.html#COGL-VERTICES-MODE-POINTS:CAPS"><code class="literal">COGL_VERTICES_MODE_POINTS</code></a> is
used with the attribute buffer API. Note that typically the GPU
will only support a limited minimum and maximum range of point
sizes. If the chosen point size is outside that range then the
nearest value within that range will be used instead. The size of a
point is in screen space so it will be the same regardless of any
transformations.</p>
<p>If the point size is set to 0.0 then drawing points with the
pipeline will have undefined results. This is the default value so
if an application wants to draw points it must make sure to use a
pipeline that has an explicit point size set on it.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.24.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>point_size</p></td>
<td class="parameter_description"><p>the new point size.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-point-size"></a><h3>cogl_pipeline_get_point_size ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span>
cogl_pipeline_get_point_size (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>);</pre>
<p>Get the size of points drawn when <a class="link" href="cogl-2.0-experimental-Common-Types.html#COGL-VERTICES-MODE-POINTS:CAPS"><code class="literal">COGL_VERTICES_MODE_POINTS</code></a> is
used with the vertex buffer API.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.25.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> pointer</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.25.6"></a><h4>Returns</h4>
<p> the point size of the <em class="parameter"><code>pipeline</code></em>
.</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-per-vertex-point-size"></a><h3>cogl_pipeline_set_per_vertex_point_size ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_set_per_vertex_point_size
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="type">CoglBool</span></a> enable</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>Sets whether to use a per-vertex point size or to use the value set
by <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-point-size" title="cogl_pipeline_set_point_size ()"><code class="function">cogl_pipeline_set_point_size()</code></a>. If per-vertex point size is
enabled then the point size can be set for an individual point
either by drawing with a <a class="link" href="cogl-2.0-experimental-Vertex-Attributes.html#CoglAttribute" title="CoglAttribute"><span class="type">CoglAttribute</span></a> with the name
‘cogl_point_size_in’ or by writing to the GLSL builtin
‘cogl_point_size_out’ from a vertex shader snippet.</p>
<p>If per-vertex point size is enabled and this attribute is not used
and cogl_point_size_out is not written to then the results are
undefined.</p>
<p>Note that enabling this will only work if the
<a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#COGL-FEATURE-ID-PER-VERTEX-POINT-SIZE:CAPS"><code class="literal">COGL_FEATURE_ID_PER_VERTEX_POINT_SIZE</code></a> feature is available. If
this is not available then the function will return <code class="literal">FALSE</code> and set
a <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.26.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> pointer</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>enable</p></td>
<td class="parameter_description"><p>whether to enable per-vertex point size</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>a location to store a <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> if the change failed</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.26.8"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the change suceeded or <code class="literal">FALSE</code> otherwise</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-per-vertex-point-size"></a><h3>cogl_pipeline_get_per_vertex_point_size ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_get_per_vertex_point_size
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.5.3.6.27.4"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> pointer</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.27.5"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the pipeline has per-vertex point size
enabled or <code class="literal">FALSE</code> otherwise. The per-vertex point size can be
enabled with <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-per-vertex-point-size" title="cogl_pipeline_set_per_vertex_point_size ()"><code class="function">cogl_pipeline_set_per_vertex_point_size()</code></a>.</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-color-mask"></a><h3>cogl_pipeline_get_color_mask ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="returnvalue">CoglColorMask</span></a>
cogl_pipeline_get_color_mask (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>);</pre>
<p>Gets the current <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> of which channels would be written to the
current framebuffer. Each bit set in the mask means that the
corresponding color would be written.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.28.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.28.6"></a><h4>Returns</h4>
<p> A <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a></p>
<p></p>
</div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-color-mask"></a><h3>cogl_pipeline_set_color_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_color_mask (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> color_mask</code></em>);</pre>
<p>Defines a bit mask of which color channels should be written to the
current framebuffer. If a bit is set in <em class="parameter"><code>color_mask</code></em>
that means that
color will be written.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.29.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>color_mask</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglColorMask" title="enum CoglColorMask"><span class="type">CoglColorMask</span></a> of which color channels to write to
the current framebuffer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.8</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-depth-state"></a><h3>cogl_pipeline_set_depth_state ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_set_depth_state (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Depth-State.html#CoglDepthState" title="CoglDepthState"><span class="type">CoglDepthState</span></a> *state</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>This commits all the depth state configured in <em class="parameter"><code>state</code></em>
struct to the
given <em class="parameter"><code>pipeline</code></em>
. The configuration values are copied into the
pipeline so there is no requirement to keep the <a class="link" href="cogl-2.0-experimental-Depth-State.html#CoglDepthState" title="CoglDepthState"><span class="type">CoglDepthState</span></a>
struct around if you don't need it any more.</p>
<p>Note: Since some platforms do not support the depth range feature
it is possible for this function to fail and report an <em class="parameter"><code>error</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.30.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>state</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Depth-State.html#CoglDepthState" title="CoglDepthState"><span class="type">CoglDepthState</span></a> struct</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> to report failures to setup the given <em class="parameter"><code>state</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.30.7"></a><h4>Returns</h4>
<p> TRUE if the GPU supports all the given <em class="parameter"><code>state</code></em>
else <code class="literal">FALSE</code>
and returns an <em class="parameter"><code>error</code></em>
.</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-depth-state"></a><h3>cogl_pipeline_get_depth_state ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_get_depth_state (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Depth-State.html#CoglDepthState" title="CoglDepthState"><span class="type">CoglDepthState</span></a> *state_out</code></em>);</pre>
<p>Retrieves the current depth state configuration for the given
<em class="parameter"><code>pipeline</code></em>
as previously set using <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-depth-state" title="cogl_pipeline_set_depth_state ()"><code class="function">cogl_pipeline_set_depth_state()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.31.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>state_out</p></td>
<td class="parameter_description"><p> A destination <a class="link" href="cogl-2.0-experimental-Depth-State.html#CoglDepthState" title="CoglDepthState"><span class="type">CoglDepthState</span></a> struct. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-cull-face-mode"></a><h3>cogl_pipeline_set_cull_face_mode ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_cull_face_mode (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineCullFaceMode" title="enum CoglPipelineCullFaceMode"><span class="type">CoglPipelineCullFaceMode</span></a> cull_face_mode</code></em>);</pre>
<p>Sets which faces will be culled when drawing. Face culling can be
used to increase efficiency by avoiding drawing faces that would
get overridden. For example, if a model has gaps so that it is
impossible to see the inside then faces which are facing away from
the screen will never be seen so there is no point in drawing
them. This can be acheived by setting the cull face mode to
<a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-CULL-FACE-MODE-BACK:CAPS"><code class="literal">COGL_PIPELINE_CULL_FACE_MODE_BACK</code></a>.</p>
<p>Face culling relies on the primitives being drawn with a specific
order to represent which faces are facing inside and outside the
model. This order can be specified by calling
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-front-face-winding" title="cogl_pipeline_set_front_face_winding ()"><code class="function">cogl_pipeline_set_front_face_winding()</code></a>.</p>
<p>Status: Unstable</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.32.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cull_face_mode</p></td>
<td class="parameter_description"><p>The new mode to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-front-face-winding"></a><h3>cogl_pipeline_set_front_face_winding ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_front_face_winding (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglWinding" title="enum CoglWinding"><span class="type">CoglWinding</span></a> front_winding</code></em>);</pre>
<p>The order of the vertices within a primitive specifies whether it
is considered to be front or back facing. This function specifies
which order is considered to be the front
faces. <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-WINDING-COUNTER-CLOCKWISE:CAPS"><code class="literal">COGL_WINDING_COUNTER_CLOCKWISE</code></a> sets the front faces to
primitives with vertices in a counter-clockwise order and
<a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-WINDING-CLOCKWISE:CAPS"><code class="literal">COGL_WINDING_CLOCKWISE</code></a> sets them to be clockwise. The default is
<a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-WINDING-COUNTER-CLOCKWISE:CAPS"><code class="literal">COGL_WINDING_COUNTER_CLOCKWISE</code></a>.</p>
<p>Status: Unstable</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.33.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>a <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>front_winding</p></td>
<td class="parameter_description"><p>the winding order</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-texture"></a><h3>cogl_pipeline_set_layer_texture ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_texture (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="type">CoglTexture</span></a> *texture</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-null-texture"></a><h3>cogl_pipeline_set_layer_null_texture ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_null_texture (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTextureType" title="enum CoglTextureType"><span class="type">CoglTextureType</span></a> texture_type</code></em>);</pre>
<p>Sets the texture for this layer to be the default texture for the
given type. This is equivalent to calling
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-texture" title="cogl_pipeline_set_layer_texture ()"><code class="function">cogl_pipeline_set_layer_texture()</code></a> with <code class="literal">NULL</code> for the texture
argument except that you can also specify the type of default
texture to use. The default texture is a 1x1 pixel white texture.</p>
<p>This function is mostly useful if you want to create a base
pipeline that you want to create multiple copies from using
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-copy" title="cogl_pipeline_copy ()"><code class="function">cogl_pipeline_copy()</code></a>. In that case this function can be used to
specify the texture type so that any pipeline copies can share the
internal texture type state for efficiency.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.35.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>The layer number to modify</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>texture_type</p></td>
<td class="parameter_description"><p>The type of the default texture to use</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-layer-texture"></a><h3>cogl_pipeline_get_layer_texture ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-The-Texture-Interface.html#CoglTexture" title="CoglTexture"><span class="returnvalue">CoglTexture</span></a> *
cogl_pipeline_get_layer_texture (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>);</pre>
<div class="refsect3">
<a name="id-1.2.5.3.6.36.4"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the index of the layer</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.36.5"></a><h4>Returns</h4>
<p> the texture that was set for the
given layer of the pipeline or <code class="literal">NULL</code> if no texture was set. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-filters"></a><h3>cogl_pipeline_set_layer_filters ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_filters (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="type">CoglPipelineFilter</span></a> min_filter</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="type">CoglPipelineFilter</span></a> mag_filter</code></em>);</pre>
<p>Changes the decimation and interpolation filters used when a texture is
drawn at other scales than 100%.</p>
<div class="note">It is an error to pass anything other than
<a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-NEAREST:CAPS"><code class="literal">COGL_PIPELINE_FILTER_NEAREST</code></a> or <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-LINEAR:CAPS"><code class="literal">COGL_PIPELINE_FILTER_LINEAR</code></a> as
magnification filters since magnification doesn't ever need to
reference values stored in the mipmap chain.</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.37.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>min_filter</p></td>
<td class="parameter_description"><p>the filter used when scaling a texture down.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mag_filter</p></td>
<td class="parameter_description"><p>the filter used when magnifying a texture.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-layer-min-filter"></a><h3>cogl_pipeline_get_layer_min_filter ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="returnvalue">CoglPipelineFilter</span></a>
cogl_pipeline_get_layer_min_filter (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>);</pre>
<p>Retrieves the currently set minification <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="type">CoglPipelineFilter</span></a> set on
the specified layer. The miniifcation filter determines how the
layer should be sampled when down-scaled.</p>
<p>The default filter is <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-LINEAR:CAPS"><code class="literal">COGL_PIPELINE_FILTER_LINEAR</code></a> but this can be
changed using <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-filters" title="cogl_pipeline_set_layer_filters ()"><code class="function">cogl_pipeline_set_layer_filters()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.38.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.38.7"></a><h4>Returns</h4>
<p> The minification <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="type">CoglPipelineFilter</span></a> for the
specified layer.</p>
<p></p>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-layer-mag-filter"></a><h3>cogl_pipeline_get_layer_mag_filter ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="returnvalue">CoglPipelineFilter</span></a>
cogl_pipeline_get_layer_mag_filter (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>);</pre>
<p>Retrieves the currently set magnification <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="type">CoglPipelineFilter</span></a> set on
the specified layer. The magnification filter determines how the
layer should be sampled when up-scaled.</p>
<p>The default filter is <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-LINEAR:CAPS"><code class="literal">COGL_PIPELINE_FILTER_LINEAR</code></a> but this can be
changed using <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-filters" title="cogl_pipeline_set_layer_filters ()"><code class="function">cogl_pipeline_set_layer_filters()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.39.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.39.7"></a><h4>Returns</h4>
<p> The magnification <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineFilter" title="enum CoglPipelineFilter"><span class="type">CoglPipelineFilter</span></a> for the
specified layer.</p>
<p></p>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-wrap-mode"></a><h3>cogl_pipeline_set_layer_wrap_mode ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_wrap_mode (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineWrapMode" title="enum CoglPipelineWrapMode"><span class="type">CoglPipelineWrapMode</span></a> mode</code></em>);</pre>
<p>Sets the wrap mode for all three coordinates of texture lookups on
this layer. This is equivalent to calling
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode-s" title="cogl_pipeline_set_layer_wrap_mode_s ()"><code class="function">cogl_pipeline_set_layer_wrap_mode_s()</code></a>,
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode-t" title="cogl_pipeline_set_layer_wrap_mode_t ()"><code class="function">cogl_pipeline_set_layer_wrap_mode_t()</code></a> and
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-wrap-mode-p" title="cogl_pipeline_set_layer_wrap_mode_p ()"><code class="function">cogl_pipeline_set_layer_wrap_mode_p()</code></a> separately.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.40.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>the new wrap mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-wrap-mode-s"></a><h3>cogl_pipeline_set_layer_wrap_mode_s ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_wrap_mode_s (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineWrapMode" title="enum CoglPipelineWrapMode"><span class="type">CoglPipelineWrapMode</span></a> mode</code></em>);</pre>
<p>Sets the wrap mode for the 's' coordinate of texture lookups on this layer.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.41.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>the new wrap mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-wrap-mode-t"></a><h3>cogl_pipeline_set_layer_wrap_mode_t ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_wrap_mode_t (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineWrapMode" title="enum CoglPipelineWrapMode"><span class="type">CoglPipelineWrapMode</span></a> mode</code></em>);</pre>
<p>Sets the wrap mode for the 't' coordinate of texture lookups on this layer.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.42.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>the new wrap mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-wrap-mode-p"></a><h3>cogl_pipeline_set_layer_wrap_mode_p ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_wrap_mode_p (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineWrapMode" title="enum CoglPipelineWrapMode"><span class="type">CoglPipelineWrapMode</span></a> mode</code></em>);</pre>
<p>Sets the wrap mode for the 'p' coordinate of texture lookups on
this layer. 'p' is the third coordinate.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.43.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>the new wrap mode</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-combine"></a><h3>cogl_pipeline_set_layer_combine ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_set_layer_combine (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *blend_string</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>If not already familiar; you can refer</p>
<a class="link" href="cogl-Blend-Strings.html" title="Blend Strings">here</a> for an overview of what blend
<p>strings are and there syntax.</p>
<p>These are all the functions available for texture combining:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">REPLACE(arg0) = arg0</li>
<li class="listitem">MODULATE(arg0, arg1) = arg0 x arg1</li>
<li class="listitem">ADD(arg0, arg1) = arg0 + arg1</li>
<li class="listitem">ADD_SIGNED(arg0, arg1) = arg0 + arg1 - 0.5</li>
<li class="listitem">INTERPOLATE(arg0, arg1, arg2) = arg0 x arg2 + arg1 x (1 - arg2)</li>
<li class="listitem">SUBTRACT(arg0, arg1) = arg0 - arg1</li>
<li class="listitem"><pre class="programlisting">
DOT3_RGB(arg0, arg1) = 4 x ((arg0[R] - 0.5)) * (arg1[R] - 0.5) +
(arg0[G] - 0.5)) * (arg1[G] - 0.5) +
(arg0[B] - 0.5)) * (arg1[B] - 0.5))
</pre></li>
<li class="listitem"><pre class="programlisting">
DOT3_RGBA(arg0, arg1) = 4 x ((arg0[R] - 0.5)) * (arg1[R] - 0.5) +
(arg0[G] - 0.5)) * (arg1[G] - 0.5) +
(arg0[B] - 0.5)) * (arg1[B] - 0.5))
</pre></li>
</ul></div>
<p>Refer to the</p>
<a class="link" href="cogl-Blend-Strings.html#cogl-Blend-String-syntax" title="Here's the syntax">color-source syntax</a> for
<p>describing the arguments. The valid source names for texture combining
are:</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">TEXTURE</span></p></td>
<td>Use the color from the current texture layer</td>
</tr>
<tr>
<td><p><span class="term">TEXTURE_0, TEXTURE_1, etc</span></p></td>
<td>Use the color from the specified texture layer</td>
</tr>
<tr>
<td><p><span class="term">CONSTANT</span></p></td>
<td>Use the color from the constant given with
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-combine-constant" title="cogl_pipeline_set_layer_combine_constant ()"><code class="function">cogl_pipeline_set_layer_combine_constant()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term">PRIMARY</span></p></td>
<td>Use the color of the pipeline as set with
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-color" title="cogl_pipeline_set_color ()"><code class="function">cogl_pipeline_set_color()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term">PREVIOUS</span></p></td>
<td>Either use the texture color from the previous layer, or
if this is layer 0, use the color of the pipeline as set with
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-color" title="cogl_pipeline_set_color ()"><code class="function">cogl_pipeline_set_color()</code></a>
</td>
</tr>
</tbody>
</table></div>
<div class="refsect2">
<a name="cogl-Layer-Combine-Examples"></a><h3>Layer Combine Examples</h3>
<p>This is effectively what the default blending is:</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">RGBA <span class="gtkdoc opt">=</span> <span class="function">MODULATE</span> <span class="gtkdoc opt">(</span>PREVIOUS<span class="gtkdoc opt">,</span> TEXTURE<span class="gtkdoc opt">)</span></pre></td>
</tr>
</tbody>
</table>
</div>
<p>This could be used to cross-fade between two images, using
the alpha component of a constant as the interpolator. The constant
color is given by calling
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-layer-combine-constant" title="cogl_pipeline_set_layer_combine_constant ()"><code class="function">cogl_pipeline_set_layer_combine_constant()</code></a>.</p>
<div class="informalexample">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1</pre></td>
<td class="listing_code"><pre class="programlisting">RGBA <span class="gtkdoc opt">=</span> <span class="function">INTERPOLATE</span> <span class="gtkdoc opt">(</span>PREVIOUS<span class="gtkdoc opt">,</span> TEXTURE<span class="gtkdoc opt">,</span> CONSTANT<span class="gtkdoc opt">[</span>A<span class="gtkdoc opt">])</span></pre></td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="note">You can't give a multiplication factor for arguments as you can
with blending.</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.44.15"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>Specifies the layer you want define a combine function for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blend_string</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-Blend-Strings.html" title="Blend Strings">Cogl blend string</a>
describing the desired texture combine function.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> that may report parse errors or lack of GPU/driver
support. May be <code class="literal">NULL</code>, in which case a warning will be printed out if an
error is encountered.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.44.16"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the blend string was successfully parsed, and the
described texture combining is supported by the underlying driver and
or hardware. On failure, <code class="literal">FALSE</code> is returned and <em class="parameter"><code>error</code></em>
is set</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-combine-constant"></a><h3>cogl_pipeline_set_layer_combine_constant ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_combine_constant
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Color-Type.html#CoglColor" title="struct CoglColor"><span class="type">CoglColor</span></a> *constant</code></em>);</pre>
<p>When you are using the 'CONSTANT' color source in a layer combine
description then you can use this function to define its value.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.45.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>Specifies the layer you want to specify a constant used
for texture combining</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>constant</p></td>
<td class="parameter_description"><p>The constant color you want</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-matrix"></a><h3>cogl_pipeline_set_layer_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_layer_matrix (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code>const <a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> *matrix</code></em>);</pre>
<p>This function lets you set a matrix that can be used to e.g. translate
and rotate a single layer of a pipeline used to fill your geometry.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.46.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the index for the layer inside <em class="parameter"><code>pipeline</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>matrix</p></td>
<td class="parameter_description"><p>the transformation matrix for the layer</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-layer-point-sprite-coords-enabled"></a><h3>cogl_pipeline_set_layer_point_sprite_coords_enabled ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_set_layer_point_sprite_coords_enabled
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="type">CoglBool</span></a> enable</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Exception-handling.html#CoglError" title="CoglError"><span class="type">CoglError</span></a> **error</code></em>);</pre>
<p>When rendering points, if <em class="parameter"><code>enable</code></em>
is <code class="literal">TRUE</code> then the texture
coordinates for this layer will be replaced with coordinates that
vary from 0.0 to 1.0 across the primitive. The top left of the
point will have the coordinates 0.0,0.0 and the bottom right will
have 1.0,1.0. If <em class="parameter"><code>enable</code></em>
is <code class="literal">FALSE</code> then the coordinates will be
fixed for the entire point.</p>
<p>This function will only work if <a class="link" href="cogl-2.0-experimental-The-Top-Level-Context.html#COGL-FEATURE-ID-POINT-SPRITE:CAPS"><code class="literal">COGL_FEATURE_ID_POINT_SPRITE</code></a> is
available. If the feature is not available then the function will
return <code class="literal">FALSE</code> and set <em class="parameter"><code>error</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.47.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to change.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>enable</p></td>
<td class="parameter_description"><p>whether to enable point sprite coord generation.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>A return location for a CoglError, or NULL to ignore errors.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.47.7"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the function succeeds, <code class="literal">FALSE</code> otherwise.</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-layer-point-sprite-coords-enabled"></a><h3>cogl_pipeline_get_layer_point_sprite_coords_enabled ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
cogl_pipeline_get_layer_point_sprite_coords_enabled
(<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>);</pre>
<p>Gets whether point sprite coordinate generation is enabled for this
texture layer.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.48.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>the layer number to check.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.48.6"></a><h4>Returns</h4>
<p> whether the texture coordinates will be replaced with
point sprite coordinates.</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-remove-layer"></a><h3>cogl_pipeline_remove_layer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_remove_layer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>);</pre>
<p>This function removes a layer from your pipeline</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.49.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>Specifies the layer you want to remove</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-n-layers"></a><h3>cogl_pipeline_get_n_layers ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
cogl_pipeline_get_n_layers (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>);</pre>
<p>Retrieves the number of layers defined for the given <em class="parameter"><code>pipeline</code></em>
</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.50.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.50.6"></a><h4>Returns</h4>
<p> the number of layers</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="CoglPipelineLayerCallback"></a><h3>CoglPipelineLayerCallback ()</h3>
<pre class="programlisting"><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="returnvalue">CoglBool</span></a>
<span class="c_punctuation">(</span>*CoglPipelineLayerCallback<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer_index</code></em>,
<em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
<p>The callback prototype used with <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-foreach-layer" title="cogl_pipeline_foreach_layer ()"><code class="function">cogl_pipeline_foreach_layer()</code></a> for
iterating all the layers of a <em class="parameter"><code>pipeline</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.51.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>The <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> whos layers are being iterated</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer_index</p></td>
<td class="parameter_description"><p>The current layer index</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>The private data passed to <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-foreach-layer" title="cogl_pipeline_foreach_layer ()"><code class="function">cogl_pipeline_foreach_layer()</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-foreach-layer"></a><h3>cogl_pipeline_foreach_layer ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_foreach_layer (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineLayerCallback" title="CoglPipelineLayerCallback ()"><span class="type">CoglPipelineLayerCallback</span></a> callback</code></em>,
<em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
<p>Iterates all the layer indices of the given <em class="parameter"><code>pipeline</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.52.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p> A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineLayerCallback" title="CoglPipelineLayerCallback ()"><span class="type">CoglPipelineLayerCallback</span></a> to be
called for each layer index. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> Private data that will be passed to the
callback. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-get-uniform-location"></a><h3>cogl_pipeline_get_uniform_location ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span>
cogl_pipeline_get_uniform_location (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *uniform_name</code></em>);</pre>
<p>This is used to get an integer representing the uniform with the
name <em class="parameter"><code>uniform_name</code></em>
. The integer can be passed to functions such as
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-uniform-1f" title="cogl_pipeline_set_uniform_1f ()"><code class="function">cogl_pipeline_set_uniform_1f()</code></a> to set the value of a uniform.</p>
<p>This function will always return a valid integer. Ie, unlike
OpenGL, it does not return -1 if the uniform is not available in
this pipeline so it can not be used to test whether uniforms are
present. It is not necessary to set the program on the pipeline
before calling this function.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.53.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uniform_name</p></td>
<td class="parameter_description"><p>The name of a uniform</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.5.3.6.53.7"></a><h4>Returns</h4>
<p> A integer representing the location of the given uniform.</p>
<p></p>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-uniform-1f"></a><h3>cogl_pipeline_set_uniform_1f ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_uniform_1f (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> uniform_location</code></em>,
<em class="parameter"><code><span class="type">float</span> value</code></em>);</pre>
<p>Sets a new value for the uniform at <em class="parameter"><code>uniform_location</code></em>
. If this
pipeline has a user program attached and is later used as a source
for drawing, the given value will be assigned to the uniform which
can be accessed from the shader's source. The value for
<em class="parameter"><code>uniform_location</code></em>
should be retrieved from the string name of the
uniform by calling <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-uniform-location" title="cogl_pipeline_get_uniform_location ()"><code class="function">cogl_pipeline_get_uniform_location()</code></a>.</p>
<p>This function should be used to set uniforms that are of type
float. It can also be used to set a single member of a float array
uniform.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.54.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uniform_location</p></td>
<td class="parameter_description"><p>The uniform's location identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>The new value for the uniform</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-uniform-1i"></a><h3>cogl_pipeline_set_uniform_1i ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_uniform_1i (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> uniform_location</code></em>,
<em class="parameter"><code><span class="type">int</span> value</code></em>);</pre>
<p>Sets a new value for the uniform at <em class="parameter"><code>uniform_location</code></em>
. If this
pipeline has a user program attached and is later used as a source
for drawing, the given value will be assigned to the uniform which
can be accessed from the shader's source. The value for
<em class="parameter"><code>uniform_location</code></em>
should be retrieved from the string name of the
uniform by calling <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-uniform-location" title="cogl_pipeline_get_uniform_location ()"><code class="function">cogl_pipeline_get_uniform_location()</code></a>.</p>
<p>This function should be used to set uniforms that are of type
int. It can also be used to set a single member of a int array
uniform or a sampler uniform.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.55.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uniform_location</p></td>
<td class="parameter_description"><p>The uniform's location identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>The new value for the uniform</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-uniform-float"></a><h3>cogl_pipeline_set_uniform_float ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_uniform_float (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> uniform_location</code></em>,
<em class="parameter"><code><span class="type">int</span> n_components</code></em>,
<em class="parameter"><code><span class="type">int</span> count</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *value</code></em>);</pre>
<p>Sets new values for the uniform at <em class="parameter"><code>uniform_location</code></em>
. If this
pipeline has a user program attached and is later used as a source
for drawing, the given values will be assigned to the uniform which
can be accessed from the shader's source. The value for
<em class="parameter"><code>uniform_location</code></em>
should be retrieved from the string name of the
uniform by calling <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-uniform-location" title="cogl_pipeline_get_uniform_location ()"><code class="function">cogl_pipeline_get_uniform_location()</code></a>.</p>
<p>This function can be used to set any floating point type uniform,
including float arrays and float vectors. For example, to set a
single vec4 uniform you would use 4 for <em class="parameter"><code>n_components</code></em>
and 1 for
<em class="parameter"><code>count</code></em>
. To set an array of 8 float values, you could use 1 for
<em class="parameter"><code>n_components</code></em>
and 8 for <em class="parameter"><code>count</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.56.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uniform_location</p></td>
<td class="parameter_description"><p>The uniform's location identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>n_components</p></td>
<td class="parameter_description"><p>The number of components in the corresponding uniform's type</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>The number of values to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>Pointer to the new values to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-uniform-int"></a><h3>cogl_pipeline_set_uniform_int ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_uniform_int (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> uniform_location</code></em>,
<em class="parameter"><code><span class="type">int</span> n_components</code></em>,
<em class="parameter"><code><span class="type">int</span> count</code></em>,
<em class="parameter"><code>const <span class="type">int</span> *value</code></em>);</pre>
<p>Sets new values for the uniform at <em class="parameter"><code>uniform_location</code></em>
. If this
pipeline has a user program attached and is later used as a source
for drawing, the given values will be assigned to the uniform which
can be accessed from the shader's source. The value for
<em class="parameter"><code>uniform_location</code></em>
should be retrieved from the string name of the
uniform by calling <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-uniform-location" title="cogl_pipeline_get_uniform_location ()"><code class="function">cogl_pipeline_get_uniform_location()</code></a>.</p>
<p>This function can be used to set any integer type uniform,
including int arrays and int vectors. For example, to set a single
ivec4 uniform you would use 4 for <em class="parameter"><code>n_components</code></em>
and 1 for
<em class="parameter"><code>count</code></em>
. To set an array of 8 int values, you could use 1 for
<em class="parameter"><code>n_components</code></em>
and 8 for <em class="parameter"><code>count</code></em>
.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.57.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uniform_location</p></td>
<td class="parameter_description"><p>The uniform's location identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>n_components</p></td>
<td class="parameter_description"><p>The number of components in the corresponding uniform's type</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>The number of values to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>Pointer to the new values to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-set-uniform-matrix"></a><h3>cogl_pipeline_set_uniform_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_set_uniform_matrix (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> uniform_location</code></em>,
<em class="parameter"><code><span class="type">int</span> dimensions</code></em>,
<em class="parameter"><code><span class="type">int</span> count</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Common-Types.html#CoglBool" title="CoglBool"><span class="type">CoglBool</span></a> transpose</code></em>,
<em class="parameter"><code>const <span class="type">float</span> *value</code></em>);</pre>
<p>Sets new values for the uniform at <em class="parameter"><code>uniform_location</code></em>
. If this
pipeline has a user program attached and is later used as a source
for drawing, the given values will be assigned to the uniform which
can be accessed from the shader's source. The value for
<em class="parameter"><code>uniform_location</code></em>
should be retrieved from the string name of the
uniform by calling <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-get-uniform-location" title="cogl_pipeline_get_uniform_location ()"><code class="function">cogl_pipeline_get_uniform_location()</code></a>.</p>
<p>This function can be used to set any matrix type uniform, including
matrix arrays. For example, to set a single mat4 uniform you would
use 4 for <em class="parameter"><code>dimensions</code></em>
and 1 for <em class="parameter"><code>count</code></em>
. To set an array of 8
mat3 values, you could use 3 for <em class="parameter"><code>dimensions</code></em>
and 8 for <em class="parameter"><code>count</code></em>
.</p>
<p>If <em class="parameter"><code>transpose</code></em>
is <code class="literal">FALSE</code> then the matrix is expected to be in
column-major order or if it is <code class="literal">TRUE</code> then the matrix is in
row-major order. You can pass a <a class="link" href="cogl-2.0-experimental-Matrices.html#CoglMatrix" title="CoglMatrix"><span class="type">CoglMatrix</span></a> by calling by passing
the result of <a class="link" href="cogl-2.0-experimental-Matrices.html#cogl-matrix-get-array" title="cogl_matrix_get_array ()"><code class="function">cogl_matrix_get_array()</code></a> in <em class="parameter"><code>value</code></em>
and setting
<em class="parameter"><code>transpose</code></em>
to <code class="literal">FALSE</code>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.58.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> object</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uniform_location</p></td>
<td class="parameter_description"><p>The uniform's location identifier</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dimensions</p></td>
<td class="parameter_description"><p>The size of the matrix</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>count</p></td>
<td class="parameter_description"><p>The number of values to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>transpose</p></td>
<td class="parameter_description"><p>Whether to transpose the matrix</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>Pointer to the new values to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-add-snippet"></a><h3>cogl_pipeline_add_snippet ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_add_snippet (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Shader-snippets.html#CoglSnippet" title="CoglSnippet"><span class="type">CoglSnippet</span></a> *snippet</code></em>);</pre>
<p>Adds a shader snippet to <em class="parameter"><code>pipeline</code></em>
. The snippet will wrap around or
replace some part of the pipeline as defined by the hook point in
<em class="parameter"><code>snippet</code></em>
. Note that some hook points are specific to a layer and
must be added with <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-add-layer-snippet" title="cogl_pipeline_add_layer_snippet ()"><code class="function">cogl_pipeline_add_layer_snippet()</code></a> instead.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.59.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>snippet</p></td>
<td class="parameter_description"><p>The <a class="link" href="cogl-2.0-experimental-Shader-snippets.html#CoglSnippet" title="CoglSnippet"><span class="type">CoglSnippet</span></a> to add to the vertex processing hook</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
<hr>
<div class="refsect2">
<a name="cogl-pipeline-add-layer-snippet"></a><h3>cogl_pipeline_add_layer_snippet ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
cogl_pipeline_add_layer_snippet (<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a> *pipeline</code></em>,
<em class="parameter"><code><span class="type">int</span> layer</code></em>,
<em class="parameter"><code><a class="link" href="cogl-2.0-experimental-Shader-snippets.html#CoglSnippet" title="CoglSnippet"><span class="type">CoglSnippet</span></a> *snippet</code></em>);</pre>
<p>Adds a shader snippet that will hook on to the given layer of the
pipeline. The exact part of the pipeline that the snippet wraps
around depends on the hook that is given to
<a class="link" href="cogl-2.0-experimental-Shader-snippets.html#cogl-snippet-new" title="cogl_snippet_new ()"><code class="function">cogl_snippet_new()</code></a>. Note that some hooks can't be used with a layer
and need to be added with <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-add-snippet" title="cogl_pipeline_add_snippet ()"><code class="function">cogl_pipeline_add_snippet()</code></a> instead.</p>
<div class="refsect3">
<a name="id-1.2.5.3.6.60.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>pipeline</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipeline" title="CoglPipeline"><span class="type">CoglPipeline</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer to hook the snippet to</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>snippet</p></td>
<td class="parameter_description"><p>A <a class="link" href="cogl-2.0-experimental-Shader-snippets.html#CoglSnippet" title="CoglSnippet"><span class="type">CoglSnippet</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.10</p>
<p class="stability">Stability Level: <acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.
The Unstable interface level is a warning that these interfaces are subject to
change without warning and should not be used in unbundled products.
Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym></p>
</div>
</div>
<div class="refsect1">
<a name="cogl-2.0-experimental-Pipeline.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="CoglPipeline"></a><h3>CoglPipeline</h3>
<pre class="programlisting">typedef struct _CoglPipeline CoglPipeline;</pre>
</div>
<hr>
<div class="refsect2">
<a name="CoglPipelineAlphaFunc"></a><h3>enum CoglPipelineAlphaFunc</h3>
<p>Alpha testing happens before blending primitives with the framebuffer and
gives an opportunity to discard fragments based on a comparison with the
incoming alpha value and a reference alpha value. The <a class="link" href="cogl-2.0-experimental-Pipeline.html#CoglPipelineAlphaFunc" title="enum CoglPipelineAlphaFunc"><span class="type">CoglPipelineAlphaFunc</span></a>
determines how the comparison is done.</p>
<div class="refsect3">
<a name="id-1.2.5.3.7.3.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-NEVER:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_NEVER</p></td>
<td class="enum_member_description">
<p>Never let the fragment through.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-LESS:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_LESS</p></td>
<td class="enum_member_description">
<p>Let the fragment through if the incoming
alpha value is less than the reference alpha value</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-EQUAL:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_EQUAL</p></td>
<td class="enum_member_description">
<p>Let the fragment through if the incoming
alpha value equals the reference alpha value</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-LEQUAL:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_LEQUAL</p></td>
<td class="enum_member_description">
<p>Let the fragment through if the incoming
alpha value is less than or equal to the reference alpha value</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-GREATER:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_GREATER</p></td>
<td class="enum_member_description">
<p>Let the fragment through if the incoming
alpha value is greater than the reference alpha value</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-NOTEQUAL:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_NOTEQUAL</p></td>
<td class="enum_member_description">
<p>Let the fragment through if the incoming
alpha value does not equal the reference alpha value</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-GEQUAL:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_GEQUAL</p></td>
<td class="enum_member_description">
<p>Let the fragment through if the incoming
alpha value is greater than or equal to the reference alpha value.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-ALPHA-FUNC-ALWAYS:CAPS"></a>COGL_PIPELINE_ALPHA_FUNC_ALWAYS</p></td>
<td class="enum_member_description">
<p>Always let the fragment through.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="CoglBlendStringError"></a><h3>enum CoglBlendStringError</h3>
<p>Error enumeration for the blend strings parser</p>
<div class="refsect3">
<a name="id-1.2.5.3.7.4.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-BLEND-STRING-ERROR-PARSE-ERROR:CAPS"></a>COGL_BLEND_STRING_ERROR_PARSE_ERROR</p></td>
<td class="enum_member_description">
<p>Generic parse error</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-BLEND-STRING-ERROR-ARGUMENT-PARSE-ERROR:CAPS"></a>COGL_BLEND_STRING_ERROR_ARGUMENT_PARSE_ERROR</p></td>
<td class="enum_member_description">
<p>Argument parse error</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-BLEND-STRING-ERROR-INVALID-ERROR:CAPS"></a>COGL_BLEND_STRING_ERROR_INVALID_ERROR</p></td>
<td class="enum_member_description">
<p>Internal parser error</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-BLEND-STRING-ERROR-GPU-UNSUPPORTED-ERROR:CAPS"></a>COGL_BLEND_STRING_ERROR_GPU_UNSUPPORTED_ERROR</p></td>
<td class="enum_member_description">
<p>Blend string not
supported by the GPU</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="CoglPipelineCullFaceMode"></a><h3>enum CoglPipelineCullFaceMode</h3>
<p>Specifies which faces should be culled. This can be set on a
pipeline using <a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-cull-face-mode" title="cogl_pipeline_set_cull_face_mode ()"><code class="function">cogl_pipeline_set_cull_face_mode()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.7.5.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-CULL-FACE-MODE-NONE:CAPS"></a>COGL_PIPELINE_CULL_FACE_MODE_NONE</p></td>
<td class="enum_member_description">
<p>Neither face will be
culled. This is the default.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-CULL-FACE-MODE-FRONT:CAPS"></a>COGL_PIPELINE_CULL_FACE_MODE_FRONT</p></td>
<td class="enum_member_description">
<p>Front faces will be culled.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-CULL-FACE-MODE-BACK:CAPS"></a>COGL_PIPELINE_CULL_FACE_MODE_BACK</p></td>
<td class="enum_member_description">
<p>Back faces will be culled.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-CULL-FACE-MODE-BOTH:CAPS"></a>COGL_PIPELINE_CULL_FACE_MODE_BOTH</p></td>
<td class="enum_member_description">
<p>All faces will be culled.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="CoglWinding"></a><h3>enum CoglWinding</h3>
<p>Enum used to represent the two directions of rotation. This can be
used to set the front face for culling by calling
<a class="link" href="cogl-2.0-experimental-Pipeline.html#cogl-pipeline-set-front-face-winding" title="cogl_pipeline_set_front_face_winding ()"><code class="function">cogl_pipeline_set_front_face_winding()</code></a>.</p>
<div class="refsect3">
<a name="id-1.2.5.3.7.6.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-WINDING-CLOCKWISE:CAPS"></a>COGL_WINDING_CLOCKWISE</p></td>
<td class="enum_member_description">
<p>Vertices are in a clockwise order</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-WINDING-COUNTER-CLOCKWISE:CAPS"></a>COGL_WINDING_COUNTER_CLOCKWISE</p></td>
<td class="enum_member_description">
<p>Vertices are in a counter-clockwise order</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="CoglPipelineFilter"></a><h3>enum CoglPipelineFilter</h3>
<p>Texture filtering is used whenever the current pixel maps either to more
than one texture element (texel) or less than one. These filter enums
correspond to different strategies used to come up with a pixel color, by
possibly referring to multiple neighbouring texels and taking a weighted
average or simply using the nearest texel.</p>
<div class="refsect3">
<a name="id-1.2.5.3.7.7.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-FILTER-NEAREST:CAPS"></a>COGL_PIPELINE_FILTER_NEAREST</p></td>
<td class="enum_member_description">
<p>Measuring in manhatten distance from the,
current pixel center, use the nearest texture texel</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-FILTER-LINEAR:CAPS"></a>COGL_PIPELINE_FILTER_LINEAR</p></td>
<td class="enum_member_description">
<p>Use the weighted average of the 4 texels
nearest the current pixel center</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-FILTER-NEAREST-MIPMAP-NEAREST:CAPS"></a>COGL_PIPELINE_FILTER_NEAREST_MIPMAP_NEAREST</p></td>
<td class="enum_member_description">
<p>Select the mimap level whose
texel size most closely matches the current pixel, and use the
<a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-NEAREST:CAPS"><code class="literal">COGL_PIPELINE_FILTER_NEAREST</code></a> criterion</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-FILTER-LINEAR-MIPMAP-NEAREST:CAPS"></a>COGL_PIPELINE_FILTER_LINEAR_MIPMAP_NEAREST</p></td>
<td class="enum_member_description">
<p>Select the mimap level whose
texel size most closely matches the current pixel, and use the
<a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-LINEAR:CAPS"><code class="literal">COGL_PIPELINE_FILTER_LINEAR</code></a> criterion</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-FILTER-NEAREST-MIPMAP-LINEAR:CAPS"></a>COGL_PIPELINE_FILTER_NEAREST_MIPMAP_LINEAR</p></td>
<td class="enum_member_description">
<p>Select the two mimap levels
whose texel size most closely matches the current pixel, use
the <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-NEAREST:CAPS"><code class="literal">COGL_PIPELINE_FILTER_NEAREST</code></a> criterion on each one and take
their weighted average</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-FILTER-LINEAR-MIPMAP-LINEAR:CAPS"></a>COGL_PIPELINE_FILTER_LINEAR_MIPMAP_LINEAR</p></td>
<td class="enum_member_description">
<p>Select the two mimap levels
whose texel size most closely matches the current pixel, use
the <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-LINEAR:CAPS"><code class="literal">COGL_PIPELINE_FILTER_LINEAR</code></a> criterion on each one and take
their weighted average</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="CoglPipelineWrapMode"></a><h3>enum CoglPipelineWrapMode</h3>
<p>The wrap mode specifies what happens when texture coordinates
outside the range 0→1 are used. Note that if the filter mode is
anything but <a class="link" href="cogl-2.0-experimental-Pipeline.html#COGL-PIPELINE-FILTER-NEAREST:CAPS"><code class="literal">COGL_PIPELINE_FILTER_NEAREST</code></a> then texels outside the
range 0→1 might be used even when the coordinate is exactly 0 or 1
because OpenGL will try to sample neighbouring pixels. For example
if you are trying to render the full texture then you may get
artifacts around the edges when the pixels from the other side are
merged in if the wrap mode is set to repeat.</p>
<div class="refsect3">
<a name="id-1.2.5.3.7.8.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-WRAP-MODE-REPEAT:CAPS"></a>COGL_PIPELINE_WRAP_MODE_REPEAT</p></td>
<td class="enum_member_description">
<p>The texture will be repeated. This
is useful for example to draw a tiled background.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-WRAP-MODE-MIRRORED-REPEAT:CAPS"></a>COGL_PIPELINE_WRAP_MODE_MIRRORED_REPEAT</p></td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-WRAP-MODE-CLAMP-TO-EDGE:CAPS"></a>COGL_PIPELINE_WRAP_MODE_CLAMP_TO_EDGE</p></td>
<td class="enum_member_description">
<p>The coordinates outside the
range 0→1 will sample copies of the edge pixels of the
texture. This is useful to avoid artifacts if only one copy of
the texture is being rendered.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="COGL-PIPELINE-WRAP-MODE-AUTOMATIC:CAPS"></a>COGL_PIPELINE_WRAP_MODE_AUTOMATIC</p></td>
<td class="enum_member_description">
<p>Cogl will try to automatically
decide which of the above two to use. For <a class="link" href="cogl-2.0-experimental-Rectangles.html#cogl-rectangle" title="cogl_rectangle ()"><code class="function">cogl_rectangle()</code></a>, it
will use repeat mode if any of the texture coordinates are
outside the range 0→1, otherwise it will use clamp to edge. For
<code class="function">cogl_polygon()</code> it will always use repeat mode. For
<code class="function">cogl_vertex_buffer_draw()</code> it will use repeat mode except for
layers that have point sprite coordinate generation enabled. This
is the default value.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 2.0</p>
</div>
</div>
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