| /* |
| * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org> |
| * Copyright © 2018 Google, 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 |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * 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 NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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: |
| * Rob Clark <robclark@freedesktop.org> |
| */ |
| |
| #include "pipe/p_state.h" |
| #include "util/u_blend.h" |
| #include "util/u_string.h" |
| #include "util/u_memory.h" |
| |
| #include "fd6_blend.h" |
| #include "fd6_context.h" |
| #include "fd6_format.h" |
| |
| // XXX move somewhere common.. same across a3xx/a4xx/a5xx.. |
| static enum a3xx_rb_blend_opcode |
| blend_func(unsigned func) |
| { |
| switch (func) { |
| case PIPE_BLEND_ADD: |
| return BLEND_DST_PLUS_SRC; |
| case PIPE_BLEND_MIN: |
| return BLEND_MIN_DST_SRC; |
| case PIPE_BLEND_MAX: |
| return BLEND_MAX_DST_SRC; |
| case PIPE_BLEND_SUBTRACT: |
| return BLEND_SRC_MINUS_DST; |
| case PIPE_BLEND_REVERSE_SUBTRACT: |
| return BLEND_DST_MINUS_SRC; |
| default: |
| DBG("invalid blend func: %x", func); |
| return 0; |
| } |
| } |
| |
| void * |
| fd6_blend_state_create(struct pipe_context *pctx, |
| const struct pipe_blend_state *cso) |
| { |
| struct fd6_blend_stateobj *so; |
| enum a3xx_rop_code rop = ROP_COPY; |
| bool reads_dest = false; |
| unsigned i, mrt_blend = 0; |
| |
| if (cso->logicop_enable) { |
| rop = cso->logicop_func; /* maps 1:1 */ |
| |
| switch (cso->logicop_func) { |
| case PIPE_LOGICOP_NOR: |
| case PIPE_LOGICOP_AND_INVERTED: |
| case PIPE_LOGICOP_AND_REVERSE: |
| case PIPE_LOGICOP_INVERT: |
| case PIPE_LOGICOP_XOR: |
| case PIPE_LOGICOP_NAND: |
| case PIPE_LOGICOP_AND: |
| case PIPE_LOGICOP_EQUIV: |
| case PIPE_LOGICOP_NOOP: |
| case PIPE_LOGICOP_OR_INVERTED: |
| case PIPE_LOGICOP_OR_REVERSE: |
| case PIPE_LOGICOP_OR: |
| reads_dest = true; |
| break; |
| } |
| } |
| |
| so = CALLOC_STRUCT(fd6_blend_stateobj); |
| if (!so) |
| return NULL; |
| |
| so->base = *cso; |
| |
| so->lrz_write = true; /* unless blend enabled for any MRT */ |
| |
| for (i = 0; i < ARRAY_SIZE(so->rb_mrt); i++) { |
| const struct pipe_rt_blend_state *rt; |
| |
| if (cso->independent_blend_enable) |
| rt = &cso->rt[i]; |
| else |
| rt = &cso->rt[0]; |
| |
| so->rb_mrt[i].blend_control_rgb = |
| A6XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(rt->rgb_src_factor)) | |
| A6XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt->rgb_func)) | |
| A6XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(rt->rgb_dst_factor)); |
| |
| so->rb_mrt[i].blend_control_alpha = |
| A6XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(fd_blend_factor(rt->alpha_src_factor)) | |
| A6XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(blend_func(rt->alpha_func)) | |
| A6XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(fd_blend_factor(rt->alpha_dst_factor)); |
| |
| so->rb_mrt[i].blend_control_no_alpha_rgb = |
| A6XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt->rgb_src_factor))) | |
| A6XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(blend_func(rt->rgb_func)) | |
| A6XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(util_blend_dst_alpha_to_one(rt->rgb_dst_factor))); |
| |
| |
| so->rb_mrt[i].control = |
| A6XX_RB_MRT_CONTROL_ROP_CODE(rop) | |
| COND(cso->logicop_enable, A6XX_RB_MRT_CONTROL_ROP_ENABLE) | |
| A6XX_RB_MRT_CONTROL_COMPONENT_ENABLE(rt->colormask); |
| |
| if (rt->blend_enable) { |
| so->rb_mrt[i].control |= |
| // A6XX_RB_MRT_CONTROL_READ_DEST_ENABLE | |
| A6XX_RB_MRT_CONTROL_BLEND | |
| A6XX_RB_MRT_CONTROL_BLEND2; |
| mrt_blend |= (1 << i); |
| so->lrz_write = false; |
| } |
| |
| if (reads_dest) { |
| // so->rb_mrt[i].control |= A6XX_RB_MRT_CONTROL_READ_DEST_ENABLE; |
| mrt_blend |= (1 << i); |
| so->lrz_write = false; |
| } |
| } |
| |
| if (cso->dither) { |
| so->rb_dither_cntl = A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT0(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT1(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT2(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT3(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT4(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT5(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT6(DITHER_ALWAYS) | |
| A6XX_RB_DITHER_CNTL_DITHER_MODE_MRT7(DITHER_ALWAYS); |
| } |
| |
| so->rb_blend_cntl = A6XX_RB_BLEND_CNTL_ENABLE_BLEND(mrt_blend) | |
| COND(cso->alpha_to_coverage, A6XX_RB_BLEND_CNTL_ALPHA_TO_COVERAGE) | |
| COND(cso->independent_blend_enable, A6XX_RB_BLEND_CNTL_INDEPENDENT_BLEND); |
| so->sp_blend_cntl = A6XX_SP_BLEND_CNTL_UNK8 | |
| COND(cso->alpha_to_coverage, A6XX_SP_BLEND_CNTL_ALPHA_TO_COVERAGE) | |
| COND(mrt_blend, A6XX_SP_BLEND_CNTL_ENABLED); |
| |
| return so; |
| } |