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-rw-r--r--src/gallium/drivers/vc4/vc4_program.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index 7a2a9756a59..c6d9fb31603 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -1308,9 +1308,17 @@ vc4_blend_channel(struct vc4_compile *c,
case PIPE_BLENDFACTOR_DST_COLOR:
return qir_FMUL(c, val, dst[channel]);
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
- return qir_FMIN(c, src[3], qir_FSUB(c,
- qir_uniform_f(c, 1.0),
- dst[3]));
+ if (channel != 3) {
+ return qir_FMUL(c,
+ val,
+ qir_FMIN(c,
+ src[3],
+ qir_FSUB(c,
+ qir_uniform_f(c, 1.0),
+ dst[3])));
+ } else {
+ return val;
+ }
case PIPE_BLENDFACTOR_CONST_COLOR:
return qir_FMUL(c, val,
get_temp_for_uniform(c,