radeonsi: Set STENCILOPVAL fields to 1.

This is necessary for backwards compatibility with pre-SI for stencil.

Fixes a number of stencil related piglit tests, and real apps using stencil.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 3e34fa360bfc7f925e4d2b40b25e845562027cef..e7a4005ee060243b1f0d5eb65e8630c0740e3367 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -510,11 +510,13 @@ static void si_update_dsa_stencil_ref(struct r600_context *rctx)
        si_pm4_set_reg(pm4, R_028430_DB_STENCILREFMASK,
                       S_028430_STENCILTESTVAL(ref->ref_value[0]) |
                       S_028430_STENCILMASK(dsa->valuemask[0]) |
-                      S_028430_STENCILWRITEMASK(dsa->writemask[0]));
+                      S_028430_STENCILWRITEMASK(dsa->writemask[0]) |
+                      S_028430_STENCILOPVAL(1));
        si_pm4_set_reg(pm4, R_028434_DB_STENCILREFMASK_BF,
                       S_028434_STENCILTESTVAL_BF(ref->ref_value[1]) |
                       S_028434_STENCILMASK_BF(dsa->valuemask[1]) |
-                      S_028434_STENCILWRITEMASK_BF(dsa->writemask[1]));
+                      S_028434_STENCILWRITEMASK_BF(dsa->writemask[1]) |
+                      S_028434_STENCILOPVAL_BF(1));
 
        si_pm4_set_state(rctx, dsa_stencil_ref, pm4);
 }