diff options
| author | Marek Olšák <[email protected]> | 2018-06-05 01:20:23 -0400 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2018-06-19 12:52:28 -0400 |
| commit | e93fe403bc0e85994d1be59ad3ad5bf65ecbf971 (patch) | |
| tree | 43a67d994bf7c7b3c03e9d1a247e4e21ddd98abb /src/gallium/drivers/radeonsi | |
| parent | da0115b1c37e263773fb56dc28fbd22eb0f66811 (diff) | |
radeonsi: properly compute an LS-HS thread group size limit
"64 / max * 4" is less than "64 * 4 / max".
Tested-by: Dieter Nützel <[email protected]>
Diffstat (limited to 'src/gallium/drivers/radeonsi')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index 942cb3c7994..e7f8389caf3 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -146,7 +146,8 @@ static bool si_emit_derived_tess_state(struct si_context *sctx, * resource usage. Also ensures that the number of tcs in and out * vertices per threadgroup are at most 256. */ - *num_patches = 64 / MAX2(num_tcs_input_cp, num_tcs_output_cp) * 4; + unsigned max_verts_per_patch = MAX2(num_tcs_input_cp, num_tcs_output_cp); + *num_patches = 256 / max_verts_per_patch; /* Make sure that the data fits in LDS. This assumes the shaders only * use LDS for the inputs and outputs. @@ -173,7 +174,7 @@ static bool si_emit_derived_tess_state(struct si_context *sctx, /* 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); + unsigned one_wave = 64 / max_verts_per_patch; *num_patches = MIN2(*num_patches, one_wave); } |