diff options
| author | Eric Anholt <eric@anholt.net> | 2013-02-13 21:21:45 -0800 |
|---|---|---|
| committer | Andreas Boll <andreas.boll.dev@gmail.com> | 2013-02-21 09:27:28 +0100 |
| commit | be7048477a2989bd11ab590c65ea1515f764a86c (patch) | |
| tree | 470560d4517a40be7d4f3b45a23986ebf106e9d5 | |
| parent | 4e35ffa762d763820b7defc14af564b2a02c61c8 (diff) | |
i965/gen7: Set up all samplers even if samplers are sparsely used.
In GLSL, sampler indices are allocated contiguously from 0. But in the
case of ARB_fragment_program (and possibly fixed function), an app that
uses texture 0 and 2 will use sampler indices 0 and 2, so we were only
allocating space for samplers 0 and 1 and setting up sampler 0. We
would read garbage for sampler 2, resulting in flickering textures and
an angry simulator.
Fixes bad rendering in 0 A.D. and ETQW. This was fixed for pre-gen7 by
28f4be9eb91b12a2c6b1db6660cca71a98c486ec
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=25201
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=58680
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
NOTE: This is a candidate for stable branches.
(cherry picked from commit 5bb05c6e6d596d66c177e42a36128d2ca2e300aa)
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen7_sampler_state.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/gen7_sampler_state.c b/src/mesa/drivers/dri/i965/gen7_sampler_state.c index ea634a9be0..abfea91ee7 100644 --- a/src/mesa/drivers/dri/i965/gen7_sampler_state.c +++ b/src/mesa/drivers/dri/i965/gen7_sampler_state.c @@ -195,7 +195,7 @@ gen7_upload_samplers(struct brw_context *brw) GLbitfield SamplersUsed = vs->SamplersUsed | fs->SamplersUsed; - brw->sampler.count = _mesa_bitcount(SamplersUsed); + brw->sampler.count = _mesa_fls(SamplersUsed); if (brw->sampler.count == 0) return; |