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radeonsi: eliminate PS color outputs when colormask kills them

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Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-08-29 03:41:18 +02:00
parent 468c131033
commit fb7ba68f6c
3 changed files with 6 additions and 0 deletions
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4
src/gallium/drivers/radeonsi/si_state.c
View file

@ -441,6 +441,8 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
blend->need_src_alpha_4bit |= 0xf;
blend->cb_target_mask = 0;
blend->cb_target_enabled_4bit = 0;
for (int i = 0; i < 8; i++) {
/* state->rt entries > 0 only written if independent blending */
const int j = state->independent_blend_enable ? i : 0;
@ -482,6 +484,8 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
/* cb_render_state will disable unused ones */
blend->cb_target_mask |= (unsigned)state->rt[j].colormask << (4 * i);
if (state->rt[j].colormask)
blend->cb_target_enabled_4bit |= 0xf << (4 * i);
if (!state->rt[j].colormask || !state->rt[j].blend_enable) {
si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);

1
src/gallium/drivers/radeonsi/si_state.h
View file

@ -55,6 +55,7 @@ struct si_state_blend {
/* Set 0xf or 0x0 (4 bits) per render target if the following is
* true. ANDed with spi_shader_col_format.
*/
unsigned cb_target_enabled_4bit;
unsigned blend_enable_4bit;
unsigned need_src_alpha_4bit;
};

1
src/gallium/drivers/radeonsi/si_state_shaders.c
View file

@ -1355,6 +1355,7 @@ static inline void si_shader_selector_key(struct pipe_context *ctx,
sctx->framebuffer.spi_shader_col_format_alpha) |
(~blend->blend_enable_4bit & ~blend->need_src_alpha_4bit &
sctx->framebuffer.spi_shader_col_format);
key->part.ps.epilog.spi_shader_col_format &= blend->cb_target_enabled_4bit;
/* The output for dual source blending should have
* the same format as the first output.