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| author | Marek Olšák <marek.olsak@amd.com> | 2016-09-08 01:42:06 +0200 |
|---|---|---|
| committer | Marek Olšák <marek.olsak@amd.com> | 2016-09-09 22:45:06 +0200 |
| commit | a5a2cc530c1f493557c232557ad1910e607712c2 (patch) | |
| tree | 0cfbf8c1b8242833ce29fdbfd513b5e582de0014 /src/gallium/drivers/radeonsi/si_state_draw.c | |
| parent | a67d81580b520aa6adf6c06ef29f27692b1aebe5 (diff) | |
| download | external_mesa3d-a5a2cc530c1f493557c232557ad1910e607712c2.zip external_mesa3d-a5a2cc530c1f493557c232557ad1910e607712c2.tar.gz external_mesa3d-a5a2cc530c1f493557c232557ad1910e607712c2.tar.bz2 | |
radeonsi: fix the VGT performance tweak for small instances
Based on the VGT spec.
The Vulkan driver doesn't do it optimally and they plan to fix it.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Diffstat (limited to 'src/gallium/drivers/radeonsi/si_state_draw.c')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index d3e6e1a..e44147f 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -318,14 +318,15 @@ static unsigned si_get_ia_multi_vgt_param(struct si_context *sctx, wd_switch_on_eop = true; /* Performance recommendation for 4 SE Gfx7-8 parts if - * instances are smaller than a primgroup. Ignore the fact - * primgroup_size is a primitive count, not vertex count. - * Don't do anything for indirect draws. + * instances are smaller than a primgroup. + * Assume indirect draws always use small instances. + * This is needed for good VS wave utilization. */ if (sctx->b.chip_class <= VI && sctx->b.screen->info.max_se >= 4 && - !info->indirect && - info->instance_count > 1 && info->count < primgroup_size) + (info->indirect || + (info->instance_count > 1 && + si_num_prims_for_vertices(info) < primgroup_size))) wd_switch_on_eop = true; /* Required on CIK and later. */ |