| /* |
| * Copyright (c) 2012-2015 Etnaviv Project |
| * |
| * 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, 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 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: |
| * Wladimir J. van der Laan <laanwj@gmail.com> |
| */ |
| |
| #include "etnaviv_blend.h" |
| |
| #include "etnaviv_context.h" |
| #include "etnaviv_translate.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_memory.h" |
| |
| void * |
| etna_blend_state_create(struct pipe_context *pctx, |
| const struct pipe_blend_state *so) |
| { |
| const struct pipe_rt_blend_state *rt0 = &so->rt[0]; |
| struct etna_blend_state *co = CALLOC_STRUCT(etna_blend_state); |
| |
| if (!co) |
| return NULL; |
| |
| co->base = *so; |
| |
| /* Enable blending if |
| * - blend enabled in blend state |
| * - NOT source factor is ONE and destination factor ZERO for both rgb and |
| * alpha (which would mean that blending is effectively disabled) |
| */ |
| bool enable = rt0->blend_enable && |
| !(rt0->rgb_src_factor == PIPE_BLENDFACTOR_ONE && |
| rt0->rgb_dst_factor == PIPE_BLENDFACTOR_ZERO && |
| rt0->alpha_src_factor == PIPE_BLENDFACTOR_ONE && |
| rt0->alpha_dst_factor == PIPE_BLENDFACTOR_ZERO); |
| |
| /* Enable separate alpha if |
| * - Blending enabled (see above) |
| * - NOT source factor is equal to destination factor for both rgb abd |
| * alpha (which would effectively that mean alpha is not separate) |
| */ |
| bool separate_alpha = enable && |
| !(rt0->rgb_src_factor == rt0->alpha_src_factor && |
| rt0->rgb_dst_factor == rt0->alpha_dst_factor); |
| |
| /* If the complete render target is written, set full_overwrite: |
| * - The color mask is 1111 |
| * - No blending is used |
| */ |
| bool full_overwrite = (rt0->colormask == 15) && !enable; |
| |
| if (enable) { |
| co->PE_ALPHA_CONFIG = |
| VIVS_PE_ALPHA_CONFIG_BLEND_ENABLE_COLOR | |
| COND(separate_alpha, VIVS_PE_ALPHA_CONFIG_BLEND_SEPARATE_ALPHA) | |
| VIVS_PE_ALPHA_CONFIG_SRC_FUNC_COLOR(translate_blend_factor(rt0->rgb_src_factor)) | |
| VIVS_PE_ALPHA_CONFIG_SRC_FUNC_ALPHA(translate_blend_factor(rt0->alpha_src_factor)) | |
| VIVS_PE_ALPHA_CONFIG_DST_FUNC_COLOR(translate_blend_factor(rt0->rgb_dst_factor)) | |
| VIVS_PE_ALPHA_CONFIG_DST_FUNC_ALPHA(translate_blend_factor(rt0->alpha_dst_factor)) | |
| VIVS_PE_ALPHA_CONFIG_EQ_COLOR(translate_blend(rt0->rgb_func)) | |
| VIVS_PE_ALPHA_CONFIG_EQ_ALPHA(translate_blend(rt0->alpha_func)); |
| } else { |
| co->PE_ALPHA_CONFIG = 0; |
| } |
| |
| co->PE_COLOR_FORMAT = |
| VIVS_PE_COLOR_FORMAT_COMPONENTS(rt0->colormask) | |
| COND(full_overwrite, VIVS_PE_COLOR_FORMAT_OVERWRITE); |
| |
| co->PE_LOGIC_OP = |
| VIVS_PE_LOGIC_OP_OP(so->logicop_enable ? so->logicop_func : LOGIC_OP_COPY) | |
| 0x000E4000 /* ??? */; |
| |
| /* independent_blend_enable not needed: only one rt supported */ |
| /* XXX alpha_to_coverage / alpha_to_one? */ |
| /* Set dither registers based on dither status. These registers set the |
| * dither pattern, |
| * for now, set the same values as the blob. |
| */ |
| if (so->dither) { |
| co->PE_DITHER[0] = 0x6e4ca280; |
| co->PE_DITHER[1] = 0x5d7f91b3; |
| } else { |
| co->PE_DITHER[0] = 0xffffffff; |
| co->PE_DITHER[1] = 0xffffffff; |
| } |
| |
| return co; |
| } |