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radeonsi: set CB_DISABLE if the color mask is 0

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Also needed for the DB in-place decompression according to hw docs.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Marek Olšák 2013-12-17 13:27:56 +01:00
parent 3352ff97c2
commit 37c24e6d86
1 changed files with 8 additions and 3 deletions
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11
src/gallium/drivers/radeonsi/si_state.c
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@ -252,20 +252,18 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
struct si_state_blend *blend = CALLOC_STRUCT(si_state_blend);
struct si_pm4_state *pm4 = &blend->pm4;
uint32_t color_control;
uint32_t color_control = 0;
if (blend == NULL)
return NULL;
blend->alpha_to_one = state->alpha_to_one;
color_control = S_028808_MODE(mode);
if (state->logicop_enable) {
color_control |= S_028808_ROP3(state->logicop_func | (state->logicop_func << 4));
} else {
color_control |= S_028808_ROP3(0xcc);
}
si_pm4_set_reg(pm4, R_028808_CB_COLOR_CONTROL, color_control);
si_pm4_set_reg(pm4, R_028B70_DB_ALPHA_TO_MASK,
S_028B70_ALPHA_TO_MASK_ENABLE(state->alpha_to_coverage) |
@ -310,6 +308,13 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
}
if (blend->cb_target_mask) {
color_control |= S_028808_MODE(mode);
} else {
color_control |= S_028808_MODE(V_028808_CB_DISABLE);
}
si_pm4_set_reg(pm4, R_028808_CB_COLOR_CONTROL, color_control);
return blend;
}