This project is dead. A glsl to cpp compiler looks like a more promissing approach.

C++11 implementation of vec2, vec3, vec4, mat2, mat3, mat4, sampler2D with swizzeling.

Example output of fragment shader executed on the CPU:

Why:

Many examples on https://www.shadertoy.com/ and http:https://glslsandbox.com/ only display black on older gpus. With this library most examples can simply be copied and pasted into c++ files and work correctly without modifications.

Another nice thing is debugging since now you can simply add a printf call into your shader.

Example:

void main(){
    vec2 uv = gl_FragCoord.xy / iResolution.xy;
    uv -= iMouse.xy / iResolution.xy;
    printf("%f %f\n", uv.x, uv.y);
    gl_FragColor = texture2D(iChannel0, uv);
}

Limitations:

• out and inout can not be converted to references with macros. Use the fix_inout.py script for that.
• Swizzled members can not be used as out or inout parameters.
• dFdx, dFdy and fwidth are not supported.