Detect SM 4.0 in the shader?

OpenGL
1

Is there a define for SM 4.0? I know you can enable the extension, but is there a simple way to detect whether SM 4.0 is supported?

Like this:

#ifdef SM_4_Supported
Do what you want
#else
Fall back to SM 3.0 rendering
#endif

2

Well, just look out for the geometry shader extension or that gpu_shader4 one. Won’t work for ATI ards though, but they are unlikely to implement features you seek in glsl anyway.

3

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