[Piglit] PIGLIT_GL_VISUAL_RGBA not what it says on the tin

[Jose Fonseca]

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

Oh yes. See http://www.mail-archive.com/piglit@lists.freedesktop.org/msg02355.html .  There was no agreement on what to do exactly though.

Jose