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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_screen.h"
  30. #include "util/u_format.h"
  31.  
  32. #include "fd2_screen.h"
  33. #include "fd2_context.h"
  34. #include "fd2_util.h"
  35.  
  36. static boolean
  37. fd2_screen_is_format_supported(struct pipe_screen *pscreen,
  38.                 enum pipe_format format,
  39.                 enum pipe_texture_target target,
  40.                 unsigned sample_count,
  41.                 unsigned usage)
  42. {
  43.         unsigned retval = 0;
  44.  
  45.         if ((target >= PIPE_MAX_TEXTURE_TYPES) ||
  46.                         (sample_count > 1) || /* TODO add MSAA */
  47.                         !util_format_is_supported(format, usage)) {
  48.                 DBG("not supported: format=%s, target=%d, sample_count=%d, usage=%x",
  49.                                 util_format_name(format), target, sample_count, usage);
  50.                 return FALSE;
  51.         }
  52.  
  53.         /* TODO figure out how to render to other formats.. */
  54.         if ((usage & PIPE_BIND_RENDER_TARGET) &&
  55.                         ((format != PIPE_FORMAT_B8G8R8A8_UNORM) &&
  56.                          (format != PIPE_FORMAT_B8G8R8X8_UNORM))) {
  57.                 DBG("not supported render target: format=%s, target=%d, sample_count=%d, usage=%x",
  58.                                 util_format_name(format), target, sample_count, usage);
  59.                 return FALSE;
  60.         }
  61.  
  62.         if ((usage & (PIPE_BIND_SAMPLER_VIEW |
  63.                                 PIPE_BIND_VERTEX_BUFFER)) &&
  64.                         (fd2_pipe2surface(format) != ~0)) {
  65.                 retval |= usage & (PIPE_BIND_SAMPLER_VIEW |
  66.                                 PIPE_BIND_VERTEX_BUFFER);
  67.         }
  68.  
  69.         if ((usage & (PIPE_BIND_RENDER_TARGET |
  70.                                 PIPE_BIND_DISPLAY_TARGET |
  71.                                 PIPE_BIND_SCANOUT |
  72.                                 PIPE_BIND_SHARED)) &&
  73.                         (fd2_pipe2color(format) != ~0)) {
  74.                 retval |= usage & (PIPE_BIND_RENDER_TARGET |
  75.                                 PIPE_BIND_DISPLAY_TARGET |
  76.                                 PIPE_BIND_SCANOUT |
  77.                                 PIPE_BIND_SHARED);
  78.         }
  79.  
  80.         if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
  81.                         (fd_pipe2depth(format) != ~0)) {
  82.                 retval |= PIPE_BIND_DEPTH_STENCIL;
  83.         }
  84.  
  85.         if ((usage & PIPE_BIND_INDEX_BUFFER) &&
  86.                         (fd_pipe2index(format) != ~0)) {
  87.                 retval |= PIPE_BIND_INDEX_BUFFER;
  88.         }
  89.  
  90.         if (usage & PIPE_BIND_TRANSFER_READ)
  91.                 retval |= PIPE_BIND_TRANSFER_READ;
  92.         if (usage & PIPE_BIND_TRANSFER_WRITE)
  93.                 retval |= PIPE_BIND_TRANSFER_WRITE;
  94.  
  95.         if (retval != usage) {
  96.                 DBG("not supported: format=%s, target=%d, sample_count=%d, "
  97.                                 "usage=%x, retval=%x", util_format_name(format),
  98.                                 target, sample_count, usage, retval);
  99.         }
  100.  
  101.         return retval == usage;
  102. }
  103.  
  104. void
  105. fd2_screen_init(struct pipe_screen *pscreen)
  106. {
  107.         pscreen->context_create = fd2_context_create;
  108.         pscreen->is_format_supported = fd2_screen_is_format_supported;
  109. }
  110.