radeonsi: always set all blend registers

better safe than sorry

Cc: 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 3e8e0c8..47b1148 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -453,8 +453,10 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
                        S_028760_ALPHA_COMB_FCN(V_028760_OPT_COMB_BLEND_DISABLED);
 
                /* Only set dual source blending for MRT0 to avoid a hang. */
-               if (i >= 1 && blend->dual_src_blend)
+               if (i >= 1 && blend->dual_src_blend) {
+                       si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
                        continue;
+               }
 
                /* Only addition and subtraction equations are supported with
                 * dual source blending.
@@ -463,16 +465,14 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
                    (eqRGB == PIPE_BLEND_MIN || eqRGB == PIPE_BLEND_MAX ||
                     eqA == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MAX)) {
                        assert(!"Unsupported equation for dual source blending");
+                       si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
                        continue;
                }
 
-               if (!state->rt[j].colormask)
-                       continue;
-
                /* cb_render_state will disable unused ones */
                blend->cb_target_mask |= (unsigned)state->rt[j].colormask << (4 * i);
 
-               if (!state->rt[j].blend_enable) {
+               if (!state->rt[j].colormask || !state->rt[j].blend_enable) {
                        si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
                        continue;
                }