| /* |
| * 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_screen.h" |
| #include "etnaviv_translate.h" |
| #include "hw/common.xml.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_memory.h" |
| #include "util/half_float.h" |
| |
| void * |
| etna_blend_state_create(struct pipe_context *pctx, |
| const struct pipe_blend_state *so) |
| { |
| struct etna_context *ctx = etna_context(pctx); |
| const struct pipe_rt_blend_state *rt0 = &so->rt[0]; |
| struct etna_blend_state *co = CALLOC_STRUCT(etna_blend_state); |
| bool alpha_enable, logicop_enable; |
| |
| /* pipe_blend_func happens to match the hardware. */ |
| STATIC_ASSERT(PIPE_BLEND_ADD == BLEND_EQ_ADD); |
| STATIC_ASSERT(PIPE_BLEND_SUBTRACT == BLEND_EQ_SUBTRACT); |
| STATIC_ASSERT(PIPE_BLEND_REVERSE_SUBTRACT == BLEND_EQ_REVERSE_SUBTRACT); |
| STATIC_ASSERT(PIPE_BLEND_MIN == BLEND_EQ_MIN); |
| STATIC_ASSERT(PIPE_BLEND_MAX == BLEND_EQ_MAX); |
| |
| if (!co) |
| return NULL; |
| |
| co->base = *so; |
| |
| /* Enable blending if |
| * - blend enabled in blend state |
| * - NOT source factor is ONE and destination factor ZERO and eq is ADD for |
| * both rgb and alpha (which mean that blending is effectively disabled) |
| */ |
| alpha_enable = rt0->blend_enable && |
| !(rt0->rgb_src_factor == PIPE_BLENDFACTOR_ONE && |
| rt0->rgb_dst_factor == PIPE_BLENDFACTOR_ZERO && |
| rt0->rgb_func == PIPE_BLEND_ADD && |
| rt0->alpha_src_factor == PIPE_BLENDFACTOR_ONE && |
| rt0->alpha_dst_factor == PIPE_BLENDFACTOR_ZERO && |
| rt0->alpha_func == PIPE_BLEND_ADD); |
| |
| /* Enable separate alpha if |
| * - Blending enabled (see above) |
| * - NOT source/destination factor and eq is same for both rgb and alpha |
| * (which would effectively that mean alpha is not separate), and |
| */ |
| bool separate_alpha = alpha_enable && |
| !(rt0->rgb_src_factor == rt0->alpha_src_factor && |
| rt0->rgb_dst_factor == rt0->alpha_dst_factor && |
| rt0->rgb_func == rt0->alpha_func); |
| |
| if (alpha_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(rt0->rgb_func) | |
| VIVS_PE_ALPHA_CONFIG_EQ_ALPHA(rt0->alpha_func); |
| } else { |
| co->PE_ALPHA_CONFIG = 0; |
| } |
| |
| logicop_enable = so->logicop_enable && |
| VIV_FEATURE(ctx->screen, chipMinorFeatures2, LOGIC_OP); |
| |
| co->PE_LOGIC_OP = |
| VIVS_PE_LOGIC_OP_OP(logicop_enable ? so->logicop_func : LOGIC_OP_COPY) | |
| VIVS_PE_LOGIC_OP_DITHER_MODE(3) | /* TODO: related to dithering, sometimes 2 */ |
| 0x000E4000 /* ??? */; |
| |
| co->fo_allowed = !alpha_enable && !logicop_enable; |
| |
| /* 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; |
| } |
| |
| bool |
| etna_update_blend(struct etna_context *ctx) |
| { |
| struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s; |
| struct pipe_blend_state *pblend = ctx->blend; |
| struct etna_blend_state *blend = etna_blend_state(pblend); |
| const struct pipe_rt_blend_state *rt0 = &pblend->rt[0]; |
| const struct util_format_description *desc; |
| uint32_t colormask; |
| |
| if (pfb->cbufs[0] && |
| translate_pe_format_rb_swap(pfb->cbufs[0]->format)) { |
| colormask = rt0->colormask & (PIPE_MASK_A | PIPE_MASK_G); |
| if (rt0->colormask & PIPE_MASK_R) |
| colormask |= PIPE_MASK_B; |
| if (rt0->colormask & PIPE_MASK_B) |
| colormask |= PIPE_MASK_R; |
| } else { |
| colormask = rt0->colormask; |
| } |
| |
| /* If the complete render target is written, set full_overwrite: |
| * - The color mask covers all channels of the render target |
| * - No blending or logicop is used |
| */ |
| if (pfb->cbufs[0]) |
| desc = util_format_description(pfb->cbufs[0]->format); |
| bool full_overwrite = !pfb->cbufs[0] || ((blend->fo_allowed && |
| util_format_colormask_full(desc, colormask))); |
| blend->PE_COLOR_FORMAT = |
| VIVS_PE_COLOR_FORMAT_COMPONENTS(colormask) | |
| COND(full_overwrite, VIVS_PE_COLOR_FORMAT_OVERWRITE); |
| |
| return true; |
| } |
| |
| void |
| etna_set_blend_color(struct pipe_context *pctx, const struct pipe_blend_color *bc) |
| { |
| struct etna_context *ctx = etna_context(pctx); |
| struct compiled_blend_color *cs = &ctx->blend_color; |
| |
| memcpy(cs->color, bc->color, sizeof(float) * 4); |
| |
| ctx->dirty |= ETNA_DIRTY_BLEND_COLOR; |
| } |
| |
| bool |
| etna_update_blend_color(struct etna_context *ctx) |
| { |
| struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s; |
| struct compiled_blend_color *cs = &ctx->blend_color; |
| bool rb_swap = (pfb->cbufs[0] && translate_pe_format_rb_swap(pfb->cbufs[0]->format)); |
| |
| cs->PE_ALPHA_BLEND_COLOR = |
| VIVS_PE_ALPHA_BLEND_COLOR_R(etna_cfloat_to_uint8(cs->color[rb_swap ? 2 : 0])) | |
| VIVS_PE_ALPHA_BLEND_COLOR_G(etna_cfloat_to_uint8(cs->color[1])) | |
| VIVS_PE_ALPHA_BLEND_COLOR_B(etna_cfloat_to_uint8(cs->color[rb_swap ? 0 : 2])) | |
| VIVS_PE_ALPHA_BLEND_COLOR_A(etna_cfloat_to_uint8(cs->color[3])); |
| |
| cs->PE_ALPHA_COLOR_EXT0 = |
| VIVS_PE_ALPHA_COLOR_EXT0_B(_mesa_float_to_half(cs->color[rb_swap ? 2 : 0])) | |
| VIVS_PE_ALPHA_COLOR_EXT0_G(_mesa_float_to_half(cs->color[1])); |
| cs->PE_ALPHA_COLOR_EXT1 = |
| VIVS_PE_ALPHA_COLOR_EXT1_R(_mesa_float_to_half(cs->color[rb_swap ? 0 : 2])) | |
| VIVS_PE_ALPHA_COLOR_EXT1_A(_mesa_float_to_half(cs->color[3])); |
| |
| return true; |
| } |