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

   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) != (enum a2xx_sq_surfaceformat)~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) != (enum a2xx_colorformatx)~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) != (enum adreno_rb_depth_format)~0)) {
  82                 retval |= PIPE_BIND_DEPTH_STENCIL;
  83         }
  84
  85         if ((usage & PIPE_BIND_INDEX_BUFFER) &&
  86                         (fd_pipe2index(format) != (enum pc_di_index_size)~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         fd_screen(pscreen)->max_rts = 1;
 108         pscreen->context_create = fd2_context_create;
 109         pscreen->is_format_supported = fd2_screen_is_format_supported;
 110 }