From: Marek Olšák <[email protected]>
It looks like commit 391673af7ad1565a5f6ac8fc2f8c9fcdd1fe9908 that should
have fixed the perf regression didn't really change much if anything.
---
src/gallium/drivers/radeonsi/si_state_draw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c
b/src/gallium/drivers/radeonsi/si_state_draw.c
index 051dfea..363a4ae 100644
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -206,21 +206,21 @@ static void si_emit_derived_tess_state(struct si_context
*sctx,
/* The VGT HS block increments the patch ID unconditionally
* within a single threadgroup. This results in incorrect
* patch IDs when instanced draws are used.
*
* The intended solution is to restrict threadgroups to
* a single instance by setting SWITCH_ON_EOI, which
* should cause IA to split instances up. However, this
* doesn't work correctly on SI when there is no other
* SE to switch to.
*/
- if (has_primid_instancing_bug)
+ if (has_primid_instancing_bug && tess_uses_primid)
*num_patches = 1;
sctx->last_num_patches = *num_patches;
output_patch0_offset = input_patch_size * *num_patches;
perpatch_output_offset = output_patch0_offset +
pervertex_output_patch_size;
/* Compute userdata SGPRs. */
assert(((input_vertex_size / 4) & ~0xff) == 0);
assert(((output_vertex_size / 4) & ~0xff) == 0);
--
2.7.4
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