/usr/share/gem/examples/10.glsl/fetching2.vert is in gem-doc 1:0.93.3-9build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | // Cyrille Henry 2008
#extension GL_ARB_texture_rectangle : enable
uniform sampler2DRect MyTex;
uniform float K;
void main()
{
vec4 v = vec4(gl_Vertex);
vec4 color = texture2DRect(MyTex, gl_MultiTexCoord0.st * vec2(91./128.,63./128.));
gl_TexCoord[0] = gl_MultiTexCoord0;
v.x = color.r -0.5;
v.y = color.g -0.5;
v.z = color.b -0.5;
gl_Position = gl_ModelViewProjectionMatrix * v;
}
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