[Piglit] PIGLIT_GL_VISUAL_RGBA not what it says on the tin

Dave Airlie airlied at gmail.com
Fri Mar 22 00:45:06 PDT 2013

So I was debugging texelFetch today with multisample inside softpipe,
when I found in non-fbo mode it was getting alpha values wrong,

        PIGLIT_GL_VISUAL_RGB            = 0,
        PIGLIT_GL_VISUAL_RGBA           = 0,

I expect someone thought that would get them an alpha visual, whereas
you need to add PIGLIT_GL_VISUAL_ALPHA to get that.

I expect a few other people have fallen into this hole.


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