[Mesa-dev] [PATCH] st/mesa: Don't apply multsample FB rasterization to non-multisample FBs.

[Eric Anholt]

It's not just whether GL_MULTISAMPLE is 1 that determines if multisample
framebuffer operations happen, it's also whether SAMPLE_BUFFERS > 1.
Noticed with my broken sample_mask support when ETQW traces that were only
using a single sampled buffer crashed.
---
 src/mesa/state_tracker/st_atom_blend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/state_tracker/st_atom_blend.c b/src/mesa/state_tracker/st_atom_blend.c
index 6bb4077..812b2a7 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -265,7 +265,7 @@ update_blend( struct st_context *st )
 
    blend->dither = ctx->Color.DitherFlag;
 
-   if (ctx->Multisample.Enabled) {
+   if (ctx->Multisample._Enabled) {
       /* unlike in gallium/d3d10 these operations are only performed
          if msaa is enabled */
       blend->alpha_to_coverage = ctx->Multisample.SampleAlphaToCoverage;
-- 
2.6.2