diff options
| author | Nicolai Hähnle <[email protected]> | 2017-05-03 11:34:33 +0200 |
|---|---|---|
| committer | Nicolai Hähnle <[email protected]> | 2017-05-08 17:42:17 +0200 |
| commit | 707df19451f38cc9f69c019ec08ea38b8222b4da (patch) | |
| tree | c1b0e31624b3f48bb9e89adddbb3a1a557af22e3 /src/gallium/drivers/radeonsi | |
| parent | f16b7558632d1d2d355a8251e969b8fc41f9c1e8 (diff) | |
radeonsi: clarify documentation of existing SI workaround
Limiting LS-HS to a single wave is required on all SI chips due to an
issue with a power management feature.
Reviewed-by: Marek Olšák <[email protected]>
Diffstat (limited to 'src/gallium/drivers/radeonsi')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index f0ed898cfb0..f7190055e3b 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -184,8 +184,10 @@ 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) { + /* SI bug workaround, related to power management. Limit LS-HS + * threadgroups to only one wave. + */ unsigned one_wave = 64 / MAX2(num_tcs_input_cp, num_tcs_output_cp); *num_patches = MIN2(*num_patches, one_wave); |