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  1. /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  2.  
  3. /*
  4.  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice (including the next
  14.  * paragraph) shall be included in all copies or substantial portions of the
  15.  * Software.
  16.  *
  17.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23.  * SOFTWARE.
  24.  *
  25.  * Authors:
  26.  *    Rob Clark <robclark@freedesktop.org>
  27.  */
  28.  
  29. #include "pipe/p_state.h"
  30. #include "util/u_string.h"
  31. #include "util/u_memory.h"
  32.  
  33. #include "fd3_blend.h"
  34. #include "fd3_context.h"
  35. #include "fd3_util.h"
  36.  
  37. void *
  38. fd3_blend_state_create(struct pipe_context *pctx,
  39.                 const struct pipe_blend_state *cso)
  40. {
  41.         struct fd3_blend_stateobj *so;
  42.         int i;
  43.  
  44.         if (cso->logicop_enable) {
  45.                 DBG("Unsupported! logicop");
  46.                 return NULL;
  47.         }
  48.  
  49.         if (cso->independent_blend_enable) {
  50.                 DBG("Unsupported! independent blend state");
  51.                 return NULL;
  52.         }
  53.  
  54.         so = CALLOC_STRUCT(fd3_blend_stateobj);
  55.         if (!so)
  56.                 return NULL;
  57.  
  58.         so->base = *cso;
  59.  
  60.         for (i = 0; i < ARRAY_SIZE(so->rb_mrt); i++) {
  61.                 const struct pipe_rt_blend_state *rt = &cso->rt[i];
  62.  
  63.                 so->rb_mrt[i].blend_control =
  64.                                 A3XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(fd_blend_factor(rt->rgb_src_factor)) |
  65.                                 A3XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(fd_blend_func(rt->rgb_func)) |
  66.                                 A3XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(fd_blend_factor(rt->rgb_dst_factor)) |
  67.                                 A3XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(fd_blend_factor(rt->alpha_src_factor)) |
  68.                                 A3XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(fd_blend_func(rt->alpha_func)) |
  69.                                 A3XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(fd_blend_factor(rt->alpha_dst_factor)) |
  70.                                 A3XX_RB_MRT_BLEND_CONTROL_CLAMP_ENABLE;
  71.  
  72.                 so->rb_mrt[i].control =
  73.                                 A3XX_RB_MRT_CONTROL_ROP_CODE(12) |
  74.                                 A3XX_RB_MRT_CONTROL_COMPONENT_ENABLE(rt->colormask);
  75.  
  76.                 if (rt->blend_enable)
  77.                         so->rb_mrt[i].control |=
  78.                                         A3XX_RB_MRT_CONTROL_READ_DEST_ENABLE |
  79.                                         A3XX_RB_MRT_CONTROL_BLEND |
  80.                                         A3XX_RB_MRT_CONTROL_BLEND2;
  81.  
  82.                 if (cso->dither)
  83.                         so->rb_mrt[i].control |= A3XX_RB_MRT_CONTROL_DITHER_MODE(DITHER_ALWAYS);
  84.         }
  85.  
  86.         return so;
  87. }
  88.