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| author | Marek Olšák <marek.olsak@amd.com> | 2016-11-29 20:41:23 +0100 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2016-12-14 19:03:11 +0000 |
| commit | 590366320d3f14ff6b677a5f9449a476715a6172 (patch) | |
| tree | 4f534917efdea296e1300689a04cb10fafc47f68 | |
| parent | a30cbf5a70451c1962d85df5651ab5db3d07607d (diff) | |
| download | external_mesa3d-590366320d3f14ff6b677a5f9449a476715a6172.zip external_mesa3d-590366320d3f14ff6b677a5f9449a476715a6172.tar.gz external_mesa3d-590366320d3f14ff6b677a5f9449a476715a6172.tar.bz2 | |
radeonsi: apply a tessellation bug workaround for SI
Cc: 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
(cherry picked from commit 78c4528ae7709fbe94d917d034cfd60535b5dcf3)
[Emil Velikov: resolve trivial conflict]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Conflicts:
src/gallium/drivers/radeonsi/si_state_draw.c
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index 447acc1..592d9b9 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -154,6 +154,12 @@ static void si_emit_derived_tess_state(struct si_context *sctx, */ *num_patches = MIN2(*num_patches, 40); + /* SI bug workaround - limit LS-HS threadgroups to only one wave. */ + if (sctx->b.chip_class == SI) { + unsigned one_wave = 64 / MAX2(num_tcs_input_cp, num_tcs_output_cp); + *num_patches = MIN2(*num_patches, one_wave); + } + output_patch0_offset = input_patch_size * *num_patches; perpatch_output_offset = output_patch0_offset + pervertex_output_patch_size; |