From: Marek Olšák <marek.ol...@amd.com>
---
src/gallium/drivers/radeonsi/si_state.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/gallium/drivers/radeonsi/si_state.c
b/src/gallium/drivers/radeonsi/si_state.c
index f5b2330..8f7203e 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -457,20 +457,30 @@ static void *si_create_blend_state_mode(struct
pipe_context *ctx,
unsigned blend_cntl = 0;
sx_mrt_blend_opt[i] =
S_028760_COLOR_COMB_FCN(V_028760_OPT_COMB_BLEND_DISABLED) |
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)
continue;
+ /* Only addition and subtraction equations are supported with
+ * dual source blending.
+ */
+ if (blend->dual_src_blend &&
+ (eqRGB == PIPE_BLEND_MIN || eqRGB == PIPE_BLEND_MAX ||
+ eqA == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MAX)) {
+ assert(!"Unsupported equation for dual source
blending");
+ 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) {
si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4,
blend_cntl);
continue;
}
--
2.7.4
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