ui/gfx/buffer_types.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_GFX_BUFFER_TYPES_H_
   6 #define UI_GFX_BUFFER_TYPES_H_
   7
   8 namespace gfx {
   9
  10 // The format needs to be taken into account when mapping a buffer into the
  11 // client's address space.
  12 enum class BufferFormat {
  13   ATC,
  14   ATCIA,
  15   DXT1,
  16   DXT5,
  17   ETC1,
  18   R_8,
  19   RGBA_4444,
  20   RGBA_8888,
  21   RGBX_8888,
  22   BGRA_8888,
  23   YUV_420,
  24
  25   LAST = YUV_420
  26 };
  27
  28 // The usage mode affects how a buffer can be used. Only buffers created with
  29 // MAP can be mapped into the client's address space and accessed by the CPU.
  30 // PERSISTENT_MAP adds the additional condition that successive Map() calls
  31 // (with Unmap() calls between) will return a pointer to the same memory
  32 // contents.
  33 enum class BufferUsage { MAP, PERSISTENT_MAP, SCANOUT, LAST = SCANOUT };
  34
  35 }  // namespace gfx
  36
  37 #endif  // UI_GFX_BUFFER_TYPES_H_