---
src/mesa/drivers/dri/i965/gen6_wm_state.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/gen6_wm_state.c
b/src/mesa/drivers/dri/i965/gen6_wm_state.c
index db0e3aa..047e036 100644
--- a/src/mesa/drivers/dri/i965/gen6_wm_state.c
+++ b/src/mesa/drivers/dri/i965/gen6_wm_state.c
@@ -76,7 +76,14 @@ upload_wm_state(struct brw_context *brw)
/* _NEW_BUFFERS */
bool multisampled_fbo = ctx->DrawBuffer->Visual.samples > 1;
- /* CACHE_NEW_WM_PROG */
+ /* CACHE_NEW_WM_PROG
+ *
+ * We can't fold this into gen6_upload_wm_push_constants(), because
+ * according to the SNB PRM, vol 2 part 1 section 7.2.2
+ * (3DSTATE_CONSTANT_PS [DevSNB]):
+ *
+ * "[DevSNB]: This packet must be followed by WM_STATE."
+ */
if (brw->wm.prog_data->base.nr_params == 0) {
/* Disable the push constant buffers. */
BEGIN_BATCH(5);
--
2.0.0.rc2
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