[Piglit] [PATCH piglit] Add a test case for all of the modes of BPTC texture compression

[Neil Roberts]

Grigori Goronzy <greg at chown.ath.cx> writes:

> That looks a bit strange to test textures (mode 4-7) with alpha
> channel... it should be PIGLIT_GL_VISUAL_RGBA! I have implemented BPTC
> for radeonsi, and it failed with the alpha formats because of this. How
> did that ever work on nvc0, r600g and i965?

Ah whoops, good catch, thanks. I think with i965 and swrast the RGBA
visuals are ordered first so it was ending up with an RGBA visual
anyway. I've posted a v2 of the patch with this change.

Regards,
- Neil