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path: root/src/mesa/drivers/dri/i965/brw_wm_pass1.c
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Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_pass1.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_wm_pass1.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_pass1.c b/src/mesa/drivers/dri/i965/brw_wm_pass1.c
index 9c68bfd78b..b449394029 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_pass1.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_pass1.c
@@ -178,6 +178,11 @@ void brw_wm_pass1( struct brw_wm_compile *c )
read1 = writemask;
break;
+ case OPCODE_DDX:
+ case OPCODE_DDY:
+ read0 = writemask;
+ break;
+
case OPCODE_MAD:
case OPCODE_CMP:
case OPCODE_LRP: