Mesa (10.1): i965/fs: Don' t propagate saturate modifiers into partial writes.
Carl Worth
cworth at kemper.freedesktop.org
Wed Apr 16 00:55:47 UTC 2014
Module: Mesa
Branch: 10.1
Commit: c60b97e9ba41b64e5fa373480731442f9dfb944b
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=c60b97e9ba41b64e5fa373480731442f9dfb944b
Author: Matt Turner <mattst88 at gmail.com>
Date: Thu Apr 3 14:00:32 2014 -0700
i965/fs: Don't propagate saturate modifiers into partial writes.
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>
(cherry picked from commit 7a7b8a02bed5a113fd0f8e45acc0eafdd7227b55)
---
src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp b/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp
index eaecb45..4f3dcff 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_saturate_propagation.cpp
@@ -59,7 +59,8 @@ opt_saturate_propagation_local(fs_visitor *v, bblock_t *block)
if (scan_inst->dst.file == GRF &&
scan_inst->dst.reg == inst->src[0].reg &&
- scan_inst->dst.reg_offset == inst->src[0].reg_offset) {
+ scan_inst->dst.reg_offset == inst->src[0].reg_offset &&
+ !scan_inst->is_partial_write()) {
if (scan_inst->can_do_saturate()) {
scan_inst->saturate = true;
inst->saturate = false;
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