diff options
Diffstat (limited to 'src/gallium/drivers/iris/iris_state.c')
| -rw-r--r-- | src/gallium/drivers/iris/iris_state.c | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c index f2fbd683172..195829991a9 100644 --- a/src/gallium/drivers/iris/iris_state.c +++ b/src/gallium/drivers/iris/iris_state.c @@ -802,6 +802,20 @@ struct iris_blend_state { bool alpha_to_coverage; /* for shader key */ }; +static enum pipe_blendfactor +fix_blendfactor(enum pipe_blendfactor f, bool alpha_to_one) +{ + if (alpha_to_one) { + if (f == PIPE_BLENDFACTOR_SRC1_ALPHA) + return PIPE_BLENDFACTOR_ONE; + + if (f == PIPE_BLENDFACTOR_INV_SRC1_ALPHA) + return PIPE_BLENDFACTOR_ZERO; + } + + return f; +} + /** * The pipe->create_blend_state() driver hook. * @@ -822,9 +836,17 @@ iris_create_blend_state(struct pipe_context *ctx, const struct pipe_rt_blend_state *rt = &state->rt[state->independent_blend_enable ? i : 0]; + enum pipe_blendfactor src_rgb = + fix_blendfactor(rt->rgb_src_factor, state->alpha_to_one); + enum pipe_blendfactor src_alpha = + fix_blendfactor(rt->alpha_src_factor, state->alpha_to_one); + enum pipe_blendfactor dst_rgb = + fix_blendfactor(rt->rgb_dst_factor, state->alpha_to_one); + enum pipe_blendfactor dst_alpha = + fix_blendfactor(rt->alpha_dst_factor, state->alpha_to_one); + if (rt->rgb_func != rt->alpha_func || - rt->rgb_src_factor != rt->alpha_src_factor || - rt->rgb_dst_factor != rt->alpha_dst_factor) + src_rgb != src_alpha || dst_rgb != dst_alpha) indep_alpha_blend = true; iris_pack_state(GENX(BLEND_STATE_ENTRY), blend_entry, be) { @@ -840,10 +862,10 @@ iris_create_blend_state(struct pipe_context *ctx, be.ColorBlendFunction = rt->rgb_func; be.AlphaBlendFunction = rt->alpha_func; - be.SourceBlendFactor = rt->rgb_src_factor; - be.SourceAlphaBlendFactor = rt->alpha_src_factor; - be.DestinationBlendFactor = rt->rgb_dst_factor; - be.DestinationAlphaBlendFactor = rt->alpha_dst_factor; + be.SourceBlendFactor = src_rgb; + be.SourceAlphaBlendFactor = src_alpha; + be.DestinationBlendFactor = dst_rgb; + be.DestinationAlphaBlendFactor = dst_alpha; be.WriteDisableRed = !(rt->colormask & PIPE_MASK_R); be.WriteDisableGreen = !(rt->colormask & PIPE_MASK_G); @@ -861,10 +883,14 @@ iris_create_blend_state(struct pipe_context *ctx, pb.ColorBufferBlendEnable = state->rt[0].blend_enable; - pb.SourceBlendFactor = state->rt[0].rgb_src_factor; - pb.SourceAlphaBlendFactor = state->rt[0].alpha_src_factor; - pb.DestinationBlendFactor = state->rt[0].rgb_dst_factor; - pb.DestinationAlphaBlendFactor = state->rt[0].alpha_dst_factor; + pb.SourceBlendFactor = + fix_blendfactor(state->rt[0].rgb_src_factor, state->alpha_to_one); + pb.SourceAlphaBlendFactor = + fix_blendfactor(state->rt[0].alpha_src_factor, state->alpha_to_one); + pb.DestinationBlendFactor = + fix_blendfactor(state->rt[0].rgb_dst_factor, state->alpha_to_one); + pb.DestinationAlphaBlendFactor = + fix_blendfactor(state->rt[0].alpha_dst_factor, state->alpha_to_one); } iris_pack_state(GENX(BLEND_STATE), cso->blend_state, bs) { |