From: Eric Anholt <eric@anholt.net>
Date: Fri, 27 Aug 2010 18:05:47 +0000 (-0700)
Subject: i965: Fix destination writemasking in the new FS.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=91a037b5e1374fe0574480a579bd36c71b75f9c2;p=mesa.git

i965: Fix destination writemasking in the new FS.
---

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index a73509f2588..a2284e431a0 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -832,12 +832,11 @@ fs_visitor::visit(ir_assignment *ir)
    }
 
    for (i = 0; i < type_size(ir->lhs->type); i++) {
-      if (i < 4 && !(write_mask & (1 << i)))
-	 continue;
-
-      inst = emit(fs_inst(BRW_OPCODE_MOV, l, r));
-      if (ir->condition)
-	 inst->predicated = true;
+      if (i >= 4 || (write_mask & (1 << i))) {
+	 inst = emit(fs_inst(BRW_OPCODE_MOV, l, r));
+	 if (ir->condition)
+	    inst->predicated = true;
+      }
       l.reg_offset++;
       r.reg_offset++;
    }