From: Matt Turner <mattst88@gmail.com>
Date: Thu, 3 Apr 2014 21:00:32 +0000 (-0700)
Subject: i965/fs: Don't propagate saturate modifiers into partial writes.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7a7b8a02bed5a113fd0f8e45acc0eafdd7227b55;p=mesa.git

i965/fs: Don't propagate saturate modifiers into partial writes.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
---

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 eaecb459deb..4f3dcff500e 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;