Module: Mesa
Branch: master
Commit: c446dd7927477e68e9a961acb1727ff53fb7ea4f
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=c446dd7927477e68e9a961acb1727ff53fb7ea4f
Author: Marek Olšák <marek.ol...@amd.com>
Date: Wed Jan 31 00:53:16 2018 +0100
st/mesa: don't translate blend state when color writes are disabled
Reviewed-by: Eric Anholt <e...@anholt.net>
---
src/mesa/state_tracker/st_atom_blend.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/src/mesa/state_tracker/st_atom_blend.c
b/src/mesa/state_tracker/st_atom_blend.c
index a5f7edbcfe..2a8da75f36 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -153,6 +153,10 @@ st_update_blend( struct st_context *st )
num_state = ctx->Const.MaxDrawBuffers;
blend->independent_blend_enable = 1;
}
+
+ for (i = 0; i < num_state; i++)
+ blend->rt[i].colormask = GET_COLORMASK(ctx->Color.ColorMask, i);
+
if (ctx->Color.ColorLogicOpEnabled) {
/* logicop enabled */
blend->logicop_enable = 1;
@@ -161,7 +165,8 @@ st_update_blend( struct st_context *st )
else if (ctx->Color.BlendEnabled && !ctx->Color._AdvancedBlendMode) {
/* blending enabled */
for (i = 0, j = 0; i < num_state; i++) {
- if (!(ctx->Color.BlendEnabled & (1 << i)))
+ if (!(ctx->Color.BlendEnabled & (1 << i)) ||
+ !blend->rt[i].colormask)
continue;
if (ctx->Extensions.ARB_draw_buffers_blend)
@@ -205,9 +210,6 @@ st_update_blend( struct st_context *st )
/* no blending / logicop */
}
- for (i = 0; i < num_state; i++)
- blend->rt[i].colormask = GET_COLORMASK(ctx->Color.ColorMask, i);
-
blend->dither = ctx->Color.DitherFlag;
if (_mesa_is_multisample_enabled(ctx) &&
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