[Mesa-dev] [PATCH 2/5] i965/vec4: Don't lose copy propagation saturate bits for not written components.

[Francisco Jerez]

---
 src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp b/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
index 8537fdd..653700e 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
@@ -438,7 +438,7 @@ vec4_visitor::opt_copy_propagation(bool do_constant_prop)
 	  * the new value, so clear it.
 	  */
 	 bool direct_copy = is_direct_copy(inst);
-	 entries[reg].saturatemask = 0x0;
+         entries[reg].saturatemask &= ~inst->dst.writemask;
 	 for (int i = 0; i < 4; i++) {
 	    if (inst->dst.writemask & (1 << i)) {
                entries[reg].value[i] = direct_copy ? &inst->src[0] : NULL;
-- 
2.1.3