[Piglit] [PATCH] util: Fix visual selection when using waffle

Eric Anholt eric at anholt.net
Tue Oct 16 18:01:18 PDT 2012

Chad Versace <chad.versace at linux.intel.com> writes:

> On 10/16/2012 12:57 PM, Eric Anholt wrote:
>> Chad Versace <chad.versace at linux.intel.com> writes:
>>> Only request a visual with alpha if the test requests
>>> When I wrote the waffle backend, I misunderstood the meaning of GLUT_RGBA.
>>> I interpreted GLUT_RGBA to indicate a request for a visual with all of
>>> RGBA channels present. Actually, it just indicates a request for a visual
>>> with RGBA color model, as opposed to GLUT_LUMINANCE and GLUT_INDEX.
>>> Fixes regression in fs-texelFetchOffest-2D.
>>> Reported-by: Marek Olšák <maraeo at gmail.com>
>>> Signed-off-by: Chad Versace <chad.versace at linux.intel.com>
>> We should fix those tests to work correctly in the presence of alpha in
>> the visual.  The system could have all visuals with alpha, and the test
>> should deal with it.
>> That said, I'd like to see some sanity in the PIGLIT_GL_VISUAL now that
>> we're not glut any more.  The glut interface was awful and a total trap.
>> I think we should replace RGB | ALPHA with RGBA, and make RGB ask for
>> RGB and RGBA ask for RGBA.
> If we go down that route, I wish to see the ALPHA enum completely removed.
> That would eliminate any confusion over "what's difference between between
> `RGB | ALPHA` and just `RGBA`?".
> What do you think?

Oh, sorry, I thought I was clear on that.  Yeah, ALPHA should die.
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