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iris: override alpha to one src1 blend factors

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No idea why this used to pass and doesn't after updating...seems like
we should have been handling it all along...
This commit is contained in:
Kenneth Graunke
2018-12-04 00:18:41 -08:00
parent 90b2745148
commit 97e82e80f9
1 changed files with 36 additions and 10 deletions
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46
src/gallium/drivers/iris/iris_state.c
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@@ -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) {