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  1. /*
  2.  * Mesa 3-D graphics library
  3.  *
  4.  * Copyright 2012 Intel Corporation
  5.  * Copyright 2013 Google
  6.  *
  7.  * Permission is hereby granted, free of charge, to any person obtaining a
  8.  * copy of this software and associated documentation files (the
  9.  * "Software"), to deal in the Software without restriction, including
  10.  * without limitation the rights to use, copy, modify, merge, publish,
  11.  * distribute, sub license, and/or sell copies of the Software, and to
  12.  * permit persons to whom the Software is furnished to do so, subject to
  13.  * the following conditions:
  14.  *
  15.  * The above copyright notice and this permission notice (including the
  16.  * next paragraph) shall be included in all copies or substantial portions
  17.  * of the Software.
  18.  *
  19.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22.  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  23.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26.  *
  27.  * Authors:
  28.  *    Chad Versace <chad.versace@linux.intel.com>
  29.  *    Frank Henigman <fjhenigman@google.com>
  30.  */
  31.  
  32. #ifndef INTEL_TILED_MEMCPY_H
  33. #define INTEL_TILED_MEMCPY_H
  34.  
  35. #include <stdint.h>
  36. #include "main/mtypes.h"
  37.  
  38. typedef void *(*mem_copy_fn)(void *dest, const void *src, size_t n);
  39.  
  40. void
  41. linear_to_tiled(uint32_t xt1, uint32_t xt2,
  42.                 uint32_t yt1, uint32_t yt2,
  43.                 char *dst, const char *src,
  44.                 uint32_t dst_pitch, int32_t src_pitch,
  45.                 bool has_swizzling,
  46.                 uint32_t tiling,
  47.                 mem_copy_fn mem_copy);
  48.  
  49. void
  50. tiled_to_linear(uint32_t xt1, uint32_t xt2,
  51.                 uint32_t yt1, uint32_t yt2,
  52.                 char *dst, const char *src,
  53.                 int32_t dst_pitch, uint32_t src_pitch,
  54.                 bool has_swizzling,
  55.                 uint32_t tiling,
  56.                 mem_copy_fn mem_copy);
  57.  
  58. /* Tells intel_get_memcpy() whether the memcpy() is
  59.  *
  60.  *  - an upload to the GPU with an aligned destination and a potentially
  61.  *    unaligned source; or
  62.  *  - a download from the GPU with an aligned source and a potentially
  63.  *    unaligned destination.
  64.  */
  65. enum intel_memcpy_direction {
  66.    INTEL_UPLOAD,
  67.    INTEL_DOWNLOAD
  68. };
  69.  
  70. bool intel_get_memcpy(mesa_format tiledFormat, GLenum format,
  71.                       GLenum type, mem_copy_fn *mem_copy, uint32_t *cpp,
  72.                       enum intel_memcpy_direction direction);
  73.  
  74. #endif /* INTEL_TILED_MEMCPY */
  75.