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-rw-r--r--src/mesa/drivers/dri/i965/brw_fs.cpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index f839d368f3c..3cdf0bf39f7 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -3673,6 +3673,12 @@ lower_fb_write_logical_send(const fs_builder &bld, fs_inst *inst,
*/
setup_color_payload(bld, key, &sources[length], src0_alpha, 1);
length++;
+ } else if (key->replicate_alpha && inst->target != 0) {
+ /* Handle the case when fragment shader doesn't write to draw buffer
+ * zero. No need to call setup_color_payload() for src0_alpha because
+ * alpha value will be undefined.
+ */
+ length++;
}
setup_color_payload(bld, key, &sources[length], color0, components);