[Mesa-dev] [PATCH] [RFC] r600g: improve flushed depth texture allocation

[Andreas Boll]

2012/6/24 Vadim Girlin <vadimgirlin at gmail.com>:
> On Sun, 2012-06-24 at 17:43 +0400, Vadim Girlin wrote:
>> Allocate flushed depth texture in the VRAM if we aren't going to access it by
>> CPU. If we need CPU access later, then it'll be reallocated in the GTT.
>> Currently it's not reallocated in the opposite direction (GTT->VRAM), though
>> probably we might want to do it too. Anyway, it helps the apps that don't need
>> to access flushed depth texture by CPU at all, e.g. Lightsmark.
>>
>> Improves performance for Lightsmark.
>>
>> Signed-off-by: Vadim Girlin <vadimgirlin at gmail.com>
>> ---
>
> You can also find this patch and some other patches that aren't
> committed yet (shader caching, dual export) in the r600-perf branch in
> my github mesa repo:
>
> git://github.com/VadimGirlin/mesa.git
>
> www: https://github.com/VadimGirlin/mesa/compare/r600-perf
>
> Could anybody test them for regressions on non-evergreen cards
> (R6xx/7xx/CAYMAN)?
>
> Vadim
>
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following piglit tests regresses on my rv770:

./piglit-run.py --tests=fbo-draw-buffers-blend
--tests=fbo-drawbuffers-arbfp --tests=fbo-drawbuffers2-*
--tests=fbo-drawbuffers-blend-add --tests=fbo-drawbuffers-maxtarget
--tests=mixed-mrt --tests=arb_draw_buffers-state_change
--tests=arbfp-no-index --tests=ati_draw_buffers-arbfp
tests/quick.tests results/regression
[Mon Jun 25 12:03:52 2012] ::  running :: fbo/fbo-drawbuffers-arbfp
[Mon Jun 25 12:03:52 2012] ::     fail :: fbo/fbo-drawbuffers-arbfp
[Mon Jun 25 12:03:52 2012] ::  running :: fbo/fbo-drawbuffers2-colormask
[Mon Jun 25 12:03:52 2012] ::     fail :: fbo/fbo-drawbuffers2-colormask
[Mon Jun 25 12:03:52 2012] ::  running :: spec/ARB_color_buffer_float/mixed-mrt
[Mon Jun 25 12:03:52 2012] ::     fail :: spec/ARB_color_buffer_float/mixed-mrt
[Mon Jun 25 12:03:52 2012] ::  running :: fbo/fbo-draw-buffers-blend
[Mon Jun 25 12:03:52 2012] ::     fail :: fbo/fbo-draw-buffers-blend
[Mon Jun 25 12:03:52 2012] ::  running :: spec/ATI_draw_buffers/arbfp-no-index
[Mon Jun 25 12:03:52 2012] ::     fail :: spec/ATI_draw_buffers/arbfp-no-index
[Mon Jun 25 12:03:52 2012] ::  running ::
spec/ATI_draw_buffers/ati_draw_buffers-arbfp
[Mon Jun 25 12:03:52 2012] ::     fail ::
spec/ATI_draw_buffers/ati_draw_buffers-arbfp
[Mon Jun 25 12:03:52 2012] ::  running :: fbo/fbo-drawbuffers2-blend
[Mon Jun 25 12:03:52 2012] ::     fail :: fbo/fbo-drawbuffers2-blend
[Mon Jun 25 12:03:52 2012] ::  running :: fbo/fbo-drawbuffers-blend-add
[Mon Jun 25 12:03:52 2012] ::     fail :: fbo/fbo-drawbuffers-blend-add
[Mon Jun 25 12:03:52 2012] ::  running :: fbo/fbo-drawbuffers-maxtargets
[Mon Jun 25 12:03:53 2012] ::     fail :: fbo/fbo-drawbuffers-maxtargets
[Mon Jun 25 12:03:53 2012] ::  running ::
spec/ARB_draw_buffers/arb_draw_buffers-state_change
[Mon Jun 25 12:03:53 2012] ::     fail ::
spec/ARB_draw_buffers/arb_draw_buffers-state_change

the regressions are introduced with the first commit of your branch:

r600g: avoid unnecessary shader exports