NVIDIA ShaderPerf is a command-line shader profiling utility and C API that reports detailed shader performance metrics for a wide range of GPUs.

ShaderPerf wokrs with GLSL vertex and fragment programs, HLSL vertex and pixel shaders and Cg shaders.

ShaderPerf 2.0 includes several new features:
* GeForce 8 series support
* Pixel Shader Differencing
* Vertex Shader Analysis

ShaderPerf outputs the following for any shader that you analyze:
* Cycle count
* Register usage
* Driver-optimized shader instruction list
* Vertex and pixel throughput estimates

More information and download HERE.

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