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-rw-r--r--src/mesa/drivers/dri/i965/brw_fs_generator.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index 86cc6679d12..cbe61910b4e 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -1596,6 +1596,7 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
case 1:
case 2:
case 4:
+ assert(inst->force_writemask_all);
brw_set_default_compression_control(p, BRW_COMPRESSION_NONE);
break;
case 8: