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  1. /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  2.  
  3. /*
  4.  * Copyright (C) 2012-2013 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 "fd2_blend.h"
  34. #include "fd2_context.h"
  35. #include "fd2_util.h"
  36.  
  37. void *
  38. fd2_blend_state_create(struct pipe_context *pctx,
  39.                 const struct pipe_blend_state *cso)
  40. {
  41.         const struct pipe_rt_blend_state *rt = &cso->rt[0];
  42.         struct fd2_blend_stateobj *so;
  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(fd2_blend_stateobj);
  55.         if (!so)
  56.                 return NULL;
  57.  
  58.         so->base = *cso;
  59.  
  60.         so->rb_colorcontrol = A2XX_RB_COLORCONTROL_ROP_CODE(12);
  61.  
  62.         so->rb_blendcontrol =
  63.                 A2XX_RB_BLEND_CONTROL_COLOR_SRCBLEND(fd_blend_factor(rt->rgb_src_factor)) |
  64.                 A2XX_RB_BLEND_CONTROL_COLOR_COMB_FCN(fd_blend_func(rt->rgb_func)) |
  65.                 A2XX_RB_BLEND_CONTROL_COLOR_DESTBLEND(fd_blend_factor(rt->rgb_dst_factor)) |
  66.                 A2XX_RB_BLEND_CONTROL_ALPHA_SRCBLEND(fd_blend_factor(rt->alpha_src_factor)) |
  67.                 A2XX_RB_BLEND_CONTROL_ALPHA_COMB_FCN(fd_blend_func(rt->alpha_func)) |
  68.                 A2XX_RB_BLEND_CONTROL_ALPHA_DESTBLEND(fd_blend_factor(rt->alpha_dst_factor));
  69.  
  70.         if (rt->colormask & PIPE_MASK_R)
  71.                 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_RED;
  72.         if (rt->colormask & PIPE_MASK_G)
  73.                 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_GREEN;
  74.         if (rt->colormask & PIPE_MASK_B)
  75.                 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_BLUE;
  76.         if (rt->colormask & PIPE_MASK_A)
  77.                 so->rb_colormask |= A2XX_RB_COLOR_MASK_WRITE_ALPHA;
  78.  
  79.         if (!rt->blend_enable)
  80.                 so->rb_colorcontrol |= A2XX_RB_COLORCONTROL_BLEND_DISABLE;
  81.  
  82.         if (cso->dither)
  83.                 so->rb_colorcontrol |= A2XX_RB_COLORCONTROL_DITHER_MODE(DITHER_ALWAYS);
  84.  
  85.         return so;
  86. }
  87.