[Mesa-dev] [PATCH 26/53] intel/fs: Don't enable dual source blend if no outputs are written

[Jason Ekstrand]

From: Francisco Jerez <currojerez at riseup.net>

This prevents a crash in some arb_enhanced_layouts tests that would be
caused by the next commit.

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
---
 src/intel/compiler/brw_fs_visitor.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp
index d3d6913..746cbb7 100644
--- a/src/intel/compiler/brw_fs_visitor.cpp
+++ b/src/intel/compiler/brw_fs_visitor.cpp
@@ -440,7 +440,8 @@ fs_visitor::emit_fb_writes()
       inst->target = target;
    }
 
-   prog_data->dual_src_blend = (this->dual_src_output.file != BAD_FILE);
+   prog_data->dual_src_blend = (this->dual_src_output.file != BAD_FILE &&
+                                this->outputs[0].file != BAD_FILE);
    assert(!prog_data->dual_src_blend || key->nr_color_regions == 1);
 
    if (inst == NULL) {
-- 
2.5.0.400.gff86faf