/* * 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 */ #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) */ co->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 = co->enable && !(rt0->rgb_src_factor == rt0->alpha_src_factor && rt0->rgb_dst_factor == rt0->alpha_dst_factor); if (co->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_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; } 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]; uint32_t colormask; if (pfb->cbufs[0] && translate_rs_format_rb_swap(pfb->cbufs[0]->texture->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 is 1111 * - No blending is used */ bool full_overwrite = (rt0->colormask == 0xf) && !blend->enable; 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; if (pfb->cbufs[0] && translate_rs_format_rb_swap(pfb->cbufs[0]->texture->format)) { cs->PE_ALPHA_BLEND_COLOR = VIVS_PE_ALPHA_BLEND_COLOR_R(etna_cfloat_to_uint8(cs->color[2])) | 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[0])) | VIVS_PE_ALPHA_BLEND_COLOR_A(etna_cfloat_to_uint8(cs->color[3])); } else { cs->PE_ALPHA_BLEND_COLOR = VIVS_PE_ALPHA_BLEND_COLOR_R(etna_cfloat_to_uint8(cs->color[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[2])) | VIVS_PE_ALPHA_BLEND_COLOR_A(etna_cfloat_to_uint8(cs->color[3])); } return true; }