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radeonsi: simplify PRIMGROUP_SIZE computation for tessellation

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Ported from Vulkan.

v2: keep the comment

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák
2016-06-03 16:44:00 +02:00
parent 014c8ec770
commit 2802310c25
1 changed files with 1 additions and 9 deletions
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src/gallium/drivers/radeonsi/si_state_draw.c
+1 -9
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@@ -257,16 +257,8 @@ static unsigned si_get_ia_multi_vgt_param(struct si_context *sctx,
primgroup_size = 64; /* recommended with a GS */
if (sctx->tes_shader.cso) {
unsigned num_cp_out =
sctx->tcs_shader.cso ?
sctx->tcs_shader.cso->info.properties[TGSI_PROPERTY_TCS_VERTICES_OUT] :
info->vertices_per_patch;
unsigned max_size = 256 / MAX2(info->vertices_per_patch, num_cp_out);
primgroup_size = MIN2(primgroup_size, max_size);
/* primgroup_size must be set to a multiple of NUM_PATCHES */
primgroup_size = (primgroup_size / num_patches) * num_patches;
primgroup_size = num_patches;
/* SWITCH_ON_EOI must be set if PrimID is used. */
if ((sctx->tcs_shader.cso && sctx->tcs_shader.cso->info.uses_primid) ||