src/gallium/drivers/freedreno/a2xx/fd2_screen.c

   1 /*
   2  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "pipe/p_screen.h"
  28 #include "util/u_format.h"
  29
  30 #include "fd2_screen.h"
  31 #include "fd2_context.h"
  32 #include "fd2_util.h"
  33
  34 static boolean
  35 fd2_screen_is_format_supported(struct pipe_screen *pscreen,
  36                 enum pipe_format format,
  37                 enum pipe_texture_target target,
  38                 unsigned sample_count,
  39                 unsigned storage_sample_count,
  40                 unsigned usage)
  41 {
  42         unsigned retval = 0;
  43
  44         if ((target >= PIPE_MAX_TEXTURE_TYPES) ||
  45                         (sample_count > 1)) { /* TODO add MSAA */
  46                 DBG("not supported: format=%s, target=%d, sample_count=%d, usage=%x",
  47                                 util_format_name(format), target, sample_count, usage);
  48                 return FALSE;
  49         }
  50
  51         if (MAX2(1, sample_count) != MAX2(1, storage_sample_count))
  52                 return false;
  53
  54         /* TODO figure out how to render to other formats.. */
  55         if ((usage & PIPE_BIND_RENDER_TARGET) &&
  56                         ((format != PIPE_FORMAT_B5G6R5_UNORM) &&
  57                          (format != PIPE_FORMAT_B5G5R5A1_UNORM) &&
  58                          (format != PIPE_FORMAT_B5G5R5X1_UNORM) &&
  59                          (format != PIPE_FORMAT_B4G4R4A4_UNORM) &&
  60                          (format != PIPE_FORMAT_B4G4R4X4_UNORM) &&
  61                          (format != PIPE_FORMAT_B8G8R8A8_UNORM) &&
  62                          (format != PIPE_FORMAT_B8G8R8X8_UNORM) &&
  63                          (format != PIPE_FORMAT_R8G8B8A8_UNORM) &&
  64                          (format != PIPE_FORMAT_R8G8B8X8_UNORM))) {
  65                 DBG("not supported render target: format=%s, target=%d, sample_count=%d, usage=%x",
  66                                 util_format_name(format), target, sample_count, usage);
  67                 return FALSE;
  68         }
  69
  70         if ((usage & (PIPE_BIND_SAMPLER_VIEW |
  71                                 PIPE_BIND_VERTEX_BUFFER)) &&
  72                         (fd2_pipe2surface(format) != (enum a2xx_sq_surfaceformat)~0)) {
  73                 retval |= usage & (PIPE_BIND_SAMPLER_VIEW |
  74                                 PIPE_BIND_VERTEX_BUFFER);
  75         }
  76
  77         if ((usage & (PIPE_BIND_RENDER_TARGET |
  78                                 PIPE_BIND_DISPLAY_TARGET |
  79                                 PIPE_BIND_SCANOUT |
  80                                 PIPE_BIND_SHARED)) &&
  81                         (fd2_pipe2color(format) != (enum a2xx_colorformatx)~0)) {
  82                 retval |= usage & (PIPE_BIND_RENDER_TARGET |
  83                                 PIPE_BIND_DISPLAY_TARGET |
  84                                 PIPE_BIND_SCANOUT |
  85                                 PIPE_BIND_SHARED);
  86         }
  87
  88         if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
  89                         (fd_pipe2depth(format) != (enum adreno_rb_depth_format)~0)) {
  90                 retval |= PIPE_BIND_DEPTH_STENCIL;
  91         }
  92
  93         if ((usage & PIPE_BIND_INDEX_BUFFER) &&
  94                         (fd_pipe2index(format) != (enum pc_di_index_size)~0)) {
  95                 retval |= PIPE_BIND_INDEX_BUFFER;
  96         }
  97
  98         if (retval != usage) {
  99                 DBG("not supported: format=%s, target=%d, sample_count=%d, "
 100                                 "usage=%x, retval=%x", util_format_name(format),
 101                                 target, sample_count, usage, retval);
 102         }
 103
 104         return retval == usage;
 105 }
 106
 107 void
 108 fd2_screen_init(struct pipe_screen *pscreen)
 109 {
 110         fd_screen(pscreen)->max_rts = 1;
 111         pscreen->context_create = fd2_context_create;
 112         pscreen->is_format_supported = fd2_screen_is_format_supported;
 113 }