The same setup is required here as when the user-provided shader
explicitly uses KIL or discard.
Signed-off-by: Chris Forbes <chr...@ijw.co.nz>
---
src/mesa/drivers/dri/i965/brw_fs.cpp | 2 +-
src/mesa/drivers/dri/i965/brw_fs_generator.cpp | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp
b/src/mesa/drivers/dri/i965/brw_fs.cpp
index b724dca..301dc77 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -3036,7 +3036,7 @@ fs_visitor::run()
/* We handle discards by keeping track of the still-live pixels in f0.1.
* Initialize it with the dispatched pixels.
*/
- if (fp->UsesKill) {
+ if (fp->UsesKill || c->key.alpha_test_func) {
fs_inst *discard_init = emit(FS_OPCODE_MOV_DISPATCH_TO_FLAGS);
discard_init->flag_subreg = 1;
}
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index 853120d..0647342 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -116,7 +116,7 @@ fs_generator::generate_fb_write(fs_inst *inst)
brw_set_mask_control(p, BRW_MASK_DISABLE);
brw_set_compression_control(p, BRW_COMPRESSION_NONE);
- if (fp->UsesKill) {
+ if (fp->UsesKill || c->key.alpha_test_func) {
struct brw_reg pixel_mask;
if (brw->gen >= 6)
--
1.8.4.1
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