diff options
| -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; |