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/*
* Copyright 2012 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Christian König <christian.koenig@amd.com>
*/
#include "util/u_memory.h"
#include "radeonsi_pipe.h"
#include "si_state.h"
#include "sid.h"
/*
* Blender functions
*/
static uint32_t si_translate_blend_function(int blend_func)
{
switch (blend_func) {
case PIPE_BLEND_ADD:
return V_028780_COMB_DST_PLUS_SRC;
case PIPE_BLEND_SUBTRACT:
return V_028780_COMB_SRC_MINUS_DST;
case PIPE_BLEND_REVERSE_SUBTRACT:
return V_028780_COMB_DST_MINUS_SRC;
case PIPE_BLEND_MIN:
return V_028780_COMB_MIN_DST_SRC;
case PIPE_BLEND_MAX:
return V_028780_COMB_MAX_DST_SRC;
default:
R600_ERR("Unknown blend function %d\n", blend_func);
assert(0);
break;
}
return 0;
}
static uint32_t si_translate_blend_factor(int blend_fact)
{
switch (blend_fact) {
case PIPE_BLENDFACTOR_ONE:
return V_028780_BLEND_ONE;
case PIPE_BLENDFACTOR_SRC_COLOR:
return V_028780_BLEND_SRC_COLOR;
case PIPE_BLENDFACTOR_SRC_ALPHA:
return V_028780_BLEND_SRC_ALPHA;
case PIPE_BLENDFACTOR_DST_ALPHA:
return V_028780_BLEND_DST_ALPHA;
case PIPE_BLENDFACTOR_DST_COLOR:
return V_028780_BLEND_DST_COLOR;
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
return V_028780_BLEND_SRC_ALPHA_SATURATE;
case PIPE_BLENDFACTOR_CONST_COLOR:
return V_028780_BLEND_CONSTANT_COLOR;
case PIPE_BLENDFACTOR_CONST_ALPHA:
return V_028780_BLEND_CONSTANT_ALPHA;
case PIPE_BLENDFACTOR_ZERO:
return V_028780_BLEND_ZERO;
case PIPE_BLENDFACTOR_INV_SRC_COLOR:
return V_028780_BLEND_ONE_MINUS_SRC_COLOR;
case PIPE_BLENDFACTOR_INV_SRC_ALPHA:
return V_028780_BLEND_ONE_MINUS_SRC_ALPHA;
case PIPE_BLENDFACTOR_INV_DST_ALPHA:
return V_028780_BLEND_ONE_MINUS_DST_ALPHA;
case PIPE_BLENDFACTOR_INV_DST_COLOR:
return V_028780_BLEND_ONE_MINUS_DST_COLOR;
case PIPE_BLENDFACTOR_INV_CONST_COLOR:
return V_028780_BLEND_ONE_MINUS_CONSTANT_COLOR;
case PIPE_BLENDFACTOR_INV_CONST_ALPHA:
return V_028780_BLEND_ONE_MINUS_CONSTANT_ALPHA;
case PIPE_BLENDFACTOR_SRC1_COLOR:
return V_028780_BLEND_SRC1_COLOR;
case PIPE_BLENDFACTOR_SRC1_ALPHA:
return V_028780_BLEND_SRC1_ALPHA;
case PIPE_BLENDFACTOR_INV_SRC1_COLOR:
return V_028780_BLEND_INV_SRC1_COLOR;
case PIPE_BLENDFACTOR_INV_SRC1_ALPHA:
return V_028780_BLEND_INV_SRC1_ALPHA;
default:
R600_ERR("Bad blend factor %d not supported!\n", blend_fact);
assert(0);
break;
}
return 0;
}
static void *si_create_blend_state(struct pipe_context *ctx,
const struct pipe_blend_state *state)
{
struct si_state_blend *blend = CALLOC_STRUCT(si_state_blend);
struct si_pm4_state *pm4 = &blend->pm4;
uint32_t color_control;
if (blend == NULL)
return NULL;
color_control = S_028808_MODE(V_028808_CB_NORMAL);
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_028C38_PA_SC_AA_MASK_X0Y0_X1Y0, ~0);
si_pm4_set_reg(pm4, R_028C3C_PA_SC_AA_MASK_X0Y1_X1Y1, ~0);
blend->cb_target_mask = 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;
unsigned eqRGB = state->rt[j].rgb_func;
unsigned srcRGB = state->rt[j].rgb_src_factor;
unsigned dstRGB = state->rt[j].rgb_dst_factor;
unsigned eqA = state->rt[j].alpha_func;
unsigned srcA = state->rt[j].alpha_src_factor;
unsigned dstA = state->rt[j].alpha_dst_factor;
unsigned blend_cntl = 0;
/* we pretend 8 buffer are used, CB_SHADER_MASK will disable unused one */
blend->cb_target_mask |= state->rt[j].colormask << (4 * i);
if (!state->rt[j].blend_enable) {
si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
continue;
}
blend_cntl |= S_028780_ENABLE(1);
blend_cntl |= S_028780_COLOR_COMB_FCN(si_translate_blend_function(eqRGB));
blend_cntl |= S_028780_COLOR_SRCBLEND(si_translate_blend_factor(srcRGB));
blend_cntl |= S_028780_COLOR_DESTBLEND(si_translate_blend_factor(dstRGB));
if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
blend_cntl |= S_028780_SEPARATE_ALPHA_BLEND(1);
blend_cntl |= S_028780_ALPHA_COMB_FCN(si_translate_blend_function(eqA));
blend_cntl |= S_028780_ALPHA_SRCBLEND(si_translate_blend_factor(srcA));
blend_cntl |= S_028780_ALPHA_DESTBLEND(si_translate_blend_factor(dstA));
}
si_pm4_set_reg(pm4, R_028780_CB_BLEND0_CONTROL + i * 4, blend_cntl);
}
return blend;
}
static void si_bind_blend_state(struct pipe_context *ctx, void *state)
{
struct r600_context *rctx = (struct r600_context *)ctx;
si_pm4_bind_state(rctx, blend, (struct si_state_blend *)state);
}
static void si_delete_blend_state(struct pipe_context *ctx, void *state)
{
struct r600_context *rctx = (struct r600_context *)ctx;
si_pm4_delete_state(rctx, blend, (struct si_state_blend *)state);
}
void si_init_state_functions(struct r600_context *rctx)
{
rctx->context.create_blend_state = si_create_blend_state;
rctx->context.bind_blend_state = si_bind_blend_state;
rctx->context.delete_blend_state = si_delete_blend_state;
}
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