[Mesa-dev] [PATCH] radeon/r200: Fix FBO formats

[Marek Olšák]

On Tue, Jan 15, 2013 at 7:15 PM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Fri, Jan 11, 2013 at 6:37 AM, smoki <smoki00790 at gmail.com> wrote:
>> Piglit passes more fbo tests on rv280, 14/28 before and now 28/33.
>> Also should fix bug:
>> https://bugs.freedesktop.org/show_bug.cgi?id=27704
>
> Does this regress anything in piglit?  It's been a while since I
> looked at this code, I think the issue may be that r1xx/r2xx asics
> only support ARGB render buffers while the texture hardware supports
> both ARGB and RGBA formats so you may run into cases where you can
> texture from a buffer, but can't render to it, at least not without an
> intermediate blit to convert the format first.

In r300g, I decided to only support RGBA and BGRA formats and not ARGB
and ABGR because of a lack of blending support. Maybe we should do the
same for r1xx/r2xx to make things simpler.

Marek