C for Graphics, aka C for Graphics, is an actively used programming language created in 2003. Cg (short for C for Graphics) is a high-level shading language developed by Nvidia in close collaboration with Microsoft for programming vertex and pixel shaders. Cg is based on the C programming language and although they share the same syntax, some features of C were modified and new data types were added to make Cg more suitable for programming graphics processing units. This language is only suitable for GPU programming and is not a general programming language. Read more on Wikipedia...

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Example code from Wikipedia:

// input vertex
 struct VertIn {
     float4 pos   : POSITION;
     float4 color : COLOR0;
 // output vertex
 struct VertOut {
     float4 pos   : POSITION;
     float4 color : COLOR0;
 // vertex shader main entry
 VertOut main(VertIn IN, uniform float4x4 modelViewProj) {
     VertOut OUT;
     OUT.pos     = mul(modelViewProj, IN.pos); // calculate output coords
     OUT.color   = IN.color; // copy input color to output
     OUT.color.z = 1.0f; // blue component of color = 1.0f
     return OUT;

Last updated June 22nd, 2020

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