Am 02.08.2015 19:54, schrieb Dieter Nützel:
Am 02.08.2015 15:36, schrieb Marek Olšák:
From: Marek Olšák <marek.ol...@amd.com>

Fixed by the CB_SHADER_MASK fix.

Hurray,

r600g (Turks) ~10% performance drop for Mesa's 'objview' is _mostly_ fixed.
Mostly 'cause it is NOT on par as before (the 'broken') version.
E.g. 'buddha' was stable at 600 FPS (see below).

Thanks,
  Dieter

Tested-by: Dieter Nützel <die...@nuetzel-hh.de>

OK,
I retested with
git revert 97ec2c6 (r600g: disable single-sample fast color clear due to hangs)
Speed is back (I put all three results together in the below table)

BTW I hadn't any hangs on Evergreen (Turks) with old version.
Any specific test I should try?

-Dieter

Without fast clear: with new fixed version: git revert 97ec2c6
./objview bobcat.obj &
1130.967407 FPS 1299.925171 FPS 1393.750000 FPS 1171.957153 FPS 1328.500000 FPS 1391.750000 FPS 1170.750000 FPS 1328.500000 FPS 1392.250000 FPS

./objview buddha.obj &
533.250000 FPS 560.609985 FPS 602.599487 FPS 543.364258 FPS 574.463013 FPS 601.849670 FPS 542.864380 FPS 574.000000 FPS 601.500000 FPS

./objview bunny.obj &
743.250000 FPS 811.250000 FPS 867.283325 FPS 768.000000 FPS 825.500000 FPS 865.000000 FPS 765.500000 FPS 826.750000 FPS 865.000000 FPS

./objview GreatLakesBiplaneHP.obj &
604.848938 FPS 644.000000 FPS 688.750000 FPS 617.691406 FPS 658.500000 FPS 689.500000 FPS 618.250000 FPS 658.500000 FPS 690.000000 FPS

Taken from former posts with Michel (about enabling DRI3/glamor):
Mesa-demo's 'objview' show this:

bobcat.obj:            ~790 => ~1048 fps | ~25%  with glamor ~1388 fps
buddha.obj:            ~370 =>  ~527 fps | >33%  with glamor  ~600 fps
bunny.obj:            ~530 =>  ~720 fps | >25%  with glamor  ~863 fps
GreatLakesBiplaneHP.obj: ~435 => ~593 fps | >33% with glamor ~687 fps

---
 src/gallium/drivers/r600/r600_blit.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_blit.c
b/src/gallium/drivers/r600/r600_blit.c
index 1c59230..8664e03 100644
--- a/src/gallium/drivers/r600/r600_blit.c
+++ b/src/gallium/drivers/r600/r600_blit.c
@@ -393,12 +393,7 @@ static void r600_clear(struct pipe_context *ctx,
unsigned buffers,
        struct r600_context *rctx = (struct r600_context *)ctx;
        struct pipe_framebuffer_state *fb = &rctx->framebuffer.state;

-       /* Single-sample fast color clear is broken on r600g:
-        *   https://bugs.freedesktop.org/show_bug.cgi?id=73528
-        *   https://bugs.freedesktop.org/show_bug.cgi?id=82186
-        */
-       if (buffers & PIPE_CLEAR_COLOR && rctx->b.chip_class >= EVERGREEN &&
-           rctx->framebuffer.nr_samples > 1) {
+       if (buffers & PIPE_CLEAR_COLOR && rctx->b.chip_class >= EVERGREEN) {
evergreen_do_fast_color_clear(&rctx->b, fb, &rctx->framebuffer.atom,
                                              &buffers, color);
                if (!buffers)
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