[Mesa-dev] glsl2: optimizing unused struct assignments

[Ian Romanick]

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Aras Pranckevicius wrote:

>> By the way, it would be useful to get some examples of your shaders as
>> shader_runner tests in piglit.  That makes them easy to analyze for
>> optimization opportunities, and they serve as regression tests to make
>> sure we don't break your shaders.  Would you be up for making some of
>> those?
> 
> I don't quite know what piglit or shader_runner is... I guess it's
> stuff here: http://cgit.freedesktop.org/piglit/tree/tests/shaders ?

Right.  Shader runner is takes a simple .ini-style file with shaders,
uniform values, draw calls, and pixel probes.  Look at the *.shader_test
files for examples.

> I do have about 500 random shaders from Unity here:
> http://github.com/aras-p/glsl-optimizer/tree/glsl2/src/glsl/optimizer-tests/
> (the *-in.txt files), but to prepare them for piglit I'd have to think
> up some instructions to draw something and inspect the pixel values,
> right?

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