diff options
Diffstat (limited to 'src/gallium/drivers/iris/iris_state.c')
| -rw-r--r-- | src/gallium/drivers/iris/iris_state.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c index 6d75d255eac..bc9071d86f0 100644 --- a/src/gallium/drivers/iris/iris_state.c +++ b/src/gallium/drivers/iris/iris_state.c @@ -821,6 +821,9 @@ struct iris_blend_state { /** Bitfield of whether blending is enabled for RT[i] - for aux resolves */ uint8_t blend_enables; + + /** Bitfield of whether color writes are enabled for RT[i] */ + uint8_t color_write_enables; }; static enum pipe_blendfactor @@ -850,6 +853,7 @@ iris_create_blend_state(struct pipe_context *ctx, uint32_t *blend_entry = cso->blend_state + GENX(BLEND_STATE_length); cso->blend_enables = 0; + cso->color_write_enables = 0; STATIC_ASSERT(BRW_MAX_DRAW_BUFFERS <= 8); cso->alpha_to_coverage = state->alpha_to_coverage; @@ -876,6 +880,9 @@ iris_create_blend_state(struct pipe_context *ctx, if (rt->blend_enable) cso->blend_enables |= 1u << i; + if (rt->colormask) + cso->color_write_enables |= 1u << i; + iris_pack_state(GENX(BLEND_STATE_ENTRY), blend_entry, be) { be.LogicOpEnable = state->logicop_enable; be.LogicOpFunction = state->logicop_func; @@ -953,6 +960,25 @@ iris_bind_blend_state(struct pipe_context *ctx, void *state) } /** + * Return true if the FS writes to any color outputs which are not disabled + * via color masking. + */ +static bool +has_writeable_rt(const struct iris_blend_state *cso_blend, + const struct shader_info *fs_info) +{ + if (!fs_info) + return false; + + unsigned rt_outputs = fs_info->outputs_written >> FRAG_RESULT_DATA0; + + if (fs_info->outputs_written & BITFIELD64_BIT(FRAG_RESULT_COLOR)) + rt_outputs = (1 << BRW_MAX_DRAW_BUFFERS) - 1; + + return cso_blend->color_write_enables & rt_outputs; +} + +/** * Gallium CSO for depth, stencil, and alpha testing state. */ struct iris_depth_stencil_alpha_state { @@ -4422,9 +4448,12 @@ iris_upload_dirty_render_state(struct iris_context *ice, if (dirty & IRIS_DIRTY_PS_BLEND) { struct iris_blend_state *cso_blend = ice->state.cso_blend; struct iris_depth_stencil_alpha_state *cso_zsa = ice->state.cso_zsa; + const struct shader_info *fs_info = + iris_get_shader_info(ice, MESA_SHADER_FRAGMENT); + uint32_t dynamic_pb[GENX(3DSTATE_PS_BLEND_length)]; iris_pack_command(GENX(3DSTATE_PS_BLEND), &dynamic_pb, pb) { - pb.HasWriteableRT = true; // XXX: comes from somewhere :( + pb.HasWriteableRT = has_writeable_rt(cso_blend, fs_info); pb.AlphaTestEnable = cso_zsa->alpha.enabled; } |