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<title>Graphics/Rendering/OpenGL/GL/FramebufferObjects/FramebufferObjects.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>--</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Graphics.Rendering.OpenGL.GL.FramebufferObjects.FramebufferObjects</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright :</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD3</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- Maintainer : Sven Panne <sven.panne@aedion.de></span>
<a name="line-8"></a><span class='hs-comment'>-- Stability :</span>
<a name="line-9"></a><span class='hs-comment'>-- Portability :</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- |</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>FramebufferObjects</span><span class='hs-varop'>.</span><span class='hs-conid'>FramebufferObjects</span> <span class='hs-layout'>(</span>
<a name="line-16"></a> <span class='hs-conid'>FramebufferObject</span><span class='hs-layout'>(</span><span class='hs-conid'>FramebufferObject</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-17"></a> <span class='hs-varid'>defaultFramebufferObject</span><span class='hs-layout'>,</span>
<a name="line-18"></a> <span class='hs-conid'>FramebufferTarget</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>marshalFramebufferTarget</span><span class='hs-layout'>,</span>
<a name="line-19"></a>
<a name="line-20"></a> <span class='hs-varid'>bindFramebuffer</span><span class='hs-layout'>,</span>
<a name="line-21"></a>
<a name="line-22"></a> <span class='hs-conid'>FramebufferStatus</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>framebufferStatus</span><span class='hs-layout'>,</span>
<a name="line-23"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>Raw</span><span class='hs-varop'>.</span><span class='hs-conid'>Core31</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>ObjectName</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>StateVar</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>GLboolean</span>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>QueryUtils</span>
<a name="line-32"></a>
<a name="line-33"></a>
<a name="line-34"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-35"></a>
<a name="line-36"></a><a name="FramebufferObject"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FramebufferObject</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FramebufferObject</span><span class='hs-layout'>{</span> <span class='hs-varid'>fbufferID</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GLuint</span> <span class='hs-layout'>}</span>
<a name="line-37"></a>
<a name="line-38"></a><a name="instance%20ObjectName%20FramebufferObject"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ObjectName</span> <span class='hs-conid'>FramebufferObject</span> <span class='hs-keyword'>where</span>
<a name="line-39"></a> <span class='hs-varid'>genObjectNames</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span>
<a name="line-40"></a> <span class='hs-varid'>allocaArray</span> <span class='hs-varid'>n</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>buf</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-41"></a> <span class='hs-varid'>glGenFramebuffers</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>buf</span>
<a name="line-42"></a> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-conid'>FramebufferObject</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>peekArray</span> <span class='hs-varid'>n</span> <span class='hs-varid'>buf</span>
<a name="line-43"></a> <span class='hs-varid'>deleteObjectNames</span> <span class='hs-varid'>objs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withArrayLen</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>fbufferID</span> <span class='hs-varid'>objs</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-44"></a> <span class='hs-varid'>glDeleteFramebuffers</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span>
<a name="line-45"></a> <span class='hs-varid'>isObjectName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>unmarshalGLboolean</span> <span class='hs-varop'>.</span> <span class='hs-varid'>glIsFramebuffer</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fbufferID</span>
<a name="line-46"></a>
<a name="line-47"></a><a name="defaultFramebufferObject"></a><span class='hs-definition'>defaultFramebufferObject</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferObject</span>
<a name="line-48"></a><span class='hs-definition'>defaultFramebufferObject</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FramebufferObject</span> <span class='hs-num'>0</span>
<a name="line-49"></a>
<a name="line-50"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-51"></a>
<a name="line-52"></a><a name="FramebufferTarget"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>=</span>
<a name="line-53"></a> <span class='hs-conid'>DrawFramebuffer</span>
<a name="line-54"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ReadFramebuffer</span>
<a name="line-55"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Framebuffer</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="marshalFramebufferTarget"></a><span class='hs-definition'>marshalFramebufferTarget</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLenum</span>
<a name="line-58"></a><span class='hs-definition'>marshalFramebufferTarget</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>xs</span> <span class='hs-keyword'>of</span>
<a name="line-59"></a> <span class='hs-conid'>DrawFramebuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>gl_DRAW_FRAMEBUFFER</span>
<a name="line-60"></a> <span class='hs-conid'>ReadFramebuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>gl_READ_FRAMEBUFFER</span>
<a name="line-61"></a> <span class='hs-conid'>Framebuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>gl_FRAMEBUFFER</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="marshalFramebufferTargetBinding"></a><span class='hs-definition'>marshalFramebufferTargetBinding</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PName1I</span>
<a name="line-64"></a><span class='hs-definition'>marshalFramebufferTargetBinding</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>of</span>
<a name="line-65"></a> <span class='hs-conid'>DrawFramebuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GetDrawFramebufferBinding</span>
<a name="line-66"></a> <span class='hs-conid'>ReadFramebuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GetReadFramebufferBinding</span>
<a name="line-67"></a> <span class='hs-conid'>Framebuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GetFramebufferBinding</span>
<a name="line-68"></a>
<a name="line-69"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-70"></a>
<a name="line-71"></a><a name="bindFramebuffer"></a><span class='hs-definition'>bindFramebuffer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>StateVar</span> <span class='hs-conid'>FramebufferObject</span>
<a name="line-72"></a><span class='hs-definition'>bindFramebuffer</span> <span class='hs-varid'>fbt</span> <span class='hs-keyglyph'>=</span>
<a name="line-73"></a> <span class='hs-varid'>makeStateVar</span> <span class='hs-layout'>(</span><span class='hs-varid'>getBoundFramebuffer</span> <span class='hs-varid'>fbt</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>setFramebuffer</span> <span class='hs-varid'>fbt</span><span class='hs-layout'>)</span>
<a name="line-74"></a>
<a name="line-75"></a><a name="getBoundFramebuffer"></a><span class='hs-definition'>getBoundFramebuffer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>FramebufferObject</span>
<a name="line-76"></a><span class='hs-definition'>getBoundFramebuffer</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getInteger1</span> <span class='hs-layout'>(</span><span class='hs-conid'>FramebufferObject</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span><span class='hs-layout'>)</span>
<a name="line-77"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>marshalFramebufferTargetBinding</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="setFramebuffer"></a><span class='hs-definition'>setFramebuffer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FramebufferObject</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-80"></a><span class='hs-definition'>setFramebuffer</span> <span class='hs-varid'>fbt</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>glBindFramebuffer</span> <span class='hs-layout'>(</span><span class='hs-varid'>marshalFramebufferTarget</span> <span class='hs-varid'>fbt</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fbufferID</span>
<a name="line-81"></a>
<a name="line-82"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-83"></a>
<a name="line-84"></a><a name="FramebufferStatus"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>FramebufferStatus</span> <span class='hs-keyglyph'>=</span>
<a name="line-85"></a> <span class='hs-conid'>Complete</span>
<a name="line-86"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Undefined</span>
<a name="line-87"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncompleteMissingAttachment</span>
<a name="line-88"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncompleteDrawBuffer</span>
<a name="line-89"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncompleteReadBuffer</span>
<a name="line-90"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IncompleteMultiSample</span>
<a name="line-91"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Unsupported</span>
<a name="line-92"></a>
<a name="line-93"></a><a name="unmarshalFramebufferStatus"></a><span class='hs-definition'>unmarshalFramebufferStatus</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GLenum</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FramebufferStatus</span>
<a name="line-94"></a><span class='hs-definition'>unmarshalFramebufferStatus</span> <span class='hs-varid'>x</span>
<a name="line-95"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_COMPLETE</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Complete</span>
<a name="line-96"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_UNDEFINED</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Undefined</span>
<a name="line-97"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT</span>
<a name="line-98"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IncompleteMissingAttachment</span>
<a name="line-99"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IncompleteDrawBuffer</span>
<a name="line-100"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_INCOMPLETE_READ_BUFFER</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IncompleteReadBuffer</span>
<a name="line-101"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IncompleteMultiSample</span>
<a name="line-102"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>gl_FRAMEBUFFER_UNSUPPORTED</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Unsupported</span>
<a name="line-103"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"unmarshalFramebufferStatus: unknown value: "</span>
<a name="line-104"></a> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>x</span>
<a name="line-105"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="framebufferStatus"></a><span class='hs-definition'>framebufferStatus</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FramebufferTarget</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GettableStateVar</span> <span class='hs-conid'>FramebufferStatus</span>
<a name="line-108"></a><span class='hs-definition'>framebufferStatus</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>makeGettableStateVar</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>unmarshalFramebufferStatus</span>
<a name="line-109"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>glCheckFramebufferStatus</span> <span class='hs-varop'>.</span> <span class='hs-varid'>marshalFramebufferTarget</span> <span class='hs-varop'>$</span> <span class='hs-varid'>t</span>
<a name="line-110"></a>
<a name="line-111"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
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