diff options
| -rw-r--r-- | etnaviv/etnaviv_render.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/etnaviv/etnaviv_render.c b/etnaviv/etnaviv_render.c index 0fb3ac9..ffefc12 100644 --- a/etnaviv/etnaviv_render.c +++ b/etnaviv/etnaviv_render.c @@ -745,6 +745,13 @@ static Bool etnaviv_accel_reduce_mask(struct etnaviv_blend_op *final_blend, uint32_t colour; /* + * If the mask has no alpha, then the alpha channel is treated + * as constant 1.0. This makes the IN operation redundant. + */ + if (!PICT_FORMAT_A(pMask->format) && !pMask->componentAlpha) + return TRUE; + + /* * A PictOpOver with a mask looks like this: * * dst.A = src.A * mask.A + dst.A * (1 - src.A * mask.A) |