Mesa (master): freedreno/a6xx: skip unnecessary MRT blend state

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Module: Mesa
Branch: master
Commit: a142bb899291ae68d00f552959cf6ee1cbb9e6c2
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a142bb899291ae68d00f552959cf6ee1cbb9e6c2

Author: Rob Clark <robdclark at chromium.org>
Date:   Tue Apr 21 09:05:55 2020 -0700

freedreno/a6xx: skip unnecessary MRT blend state

To lower CP overhead.

Signed-off-by: Rob Clark <robdclark at chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4813>

---

 src/gallium/drivers/freedreno/a6xx/fd6_blend.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/gallium/drivers/freedreno/a6xx/fd6_blend.c b/src/gallium/drivers/freedreno/a6xx/fd6_blend.c
index 279f9ea5512..16e2bfaf1b8 100644
--- a/src/gallium/drivers/freedreno/a6xx/fd6_blend.c
+++ b/src/gallium/drivers/freedreno/a6xx/fd6_blend.c
@@ -78,7 +78,7 @@ __fd6_setup_blend_variant(struct fd6_blend_stateobj *blend, unsigned sample_mask
 			((A6XX_MAX_RENDER_TARGETS * 4) + 6) * 4);
 	so->stateobj = ring;
 
-	for (unsigned i = 0; i < A6XX_MAX_RENDER_TARGETS; i++) {
+	for (unsigned i = 0; i <= cso->max_rt; i++) {
 		const struct pipe_rt_blend_state *rt;
 
 		if (cso->independent_blend_enable)
@@ -162,8 +162,8 @@ fd6_blend_state_create(struct pipe_context *pctx,
 	so->ctx = fd_context(pctx);
 	so->lrz_write = true;  /* unless blend enabled for any MRT */
 
-	unsigned nr = cso->independent_blend_enable ? A6XX_MAX_RENDER_TARGETS : 1;
-	for (unsigned i = 0; i < nr; i++) {
+	unsigned nr = cso->independent_blend_enable ? cso->max_rt : 0;
+	for (unsigned i = 0; i <= nr; i++) {
 		const struct pipe_rt_blend_state *rt = &cso->rt[i];
 
 		if (rt->blend_enable) {