[Piglit] [PATCH] Modify shader_runner to skip tests with unsigned uniforms when GL<3.0

[Eric Anholt]

On Wed,  8 Feb 2012 08:52:36 -0800, Paul Berry <stereotype441 at gmail.com> wrote:
> On implementations that support GLSL version 1.30 but not GL version
> 3.0 (for example Mesa, when built without floating point texture
> support), it is impossible to test unsigned uniforms, because the
> Uniform*ui{v} functions are not available.  So any shader_runner tests
> that use unsigned uniforms should be skipped.
> 
> Since it's rare for implementations to support GLSL version 1.30 but
> not GL version 3.0, we don't want to require test writers to remember
> to add "GL>=3.0" to the top of their test scripts.  So instead, this
> patch modifies shader_runner to automatically skip any test that uses
> unsigned uniforms if the GL version is less than 3.0.
> 
> Avoids 404 bogus "crash" results in
> spec/glsl-1.30/execution/built-in-functions when testing with a
> version of Mesa that was built without floating point texture support.

Reviewed-by: Eric Anholt <eric at anholt.net>
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