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  1. /*
  2.  * Mesa 3-D graphics library
  3.  *
  4.  * Copyright (C) 2012-2013 LunarG, Inc.
  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 shall be included
  14.  * in all copies or substantial portions of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22.  * DEALINGS IN THE SOFTWARE.
  23.  *
  24.  * Authors:
  25.  *    Chia-I Wu <olv@lunarg.com>
  26.  */
  27.  
  28. #ifndef ILO_TRANSFER_H
  29. #define ILO_TRANSFER_H
  30.  
  31. #include "pipe/p_state.h"
  32.  
  33. #include "ilo_common.h"
  34.  
  35. /*
  36.  * Direct mappings are always page aligned, but ILO_TRANSFER_MAP_STAGING is
  37.  * not.
  38.  */
  39. #define ILO_TRANSFER_MAP_BUFFER_ALIGNMENT 64
  40.  
  41. enum ilo_transfer_map_method {
  42.    /* map() / map_gtt() / map_gtt_async() */
  43.    ILO_TRANSFER_MAP_CPU,
  44.    ILO_TRANSFER_MAP_GTT,
  45.    ILO_TRANSFER_MAP_GTT_ASYNC,
  46.  
  47.    /* use staging resource */
  48.    ILO_TRANSFER_MAP_STAGING,
  49.  
  50.    /* use staging system buffer */
  51.    ILO_TRANSFER_MAP_SW_CONVERT,
  52.    ILO_TRANSFER_MAP_SW_ZS,
  53. };
  54.  
  55. struct ilo_transfer {
  56.    struct pipe_transfer base;
  57.  
  58.    enum ilo_transfer_map_method method;
  59.    /* pipe_resource, system memory, or garbage depending on the method */
  60.    union {
  61.       struct pipe_resource *res;
  62.       void *sys;
  63.    } staging;
  64. };
  65.  
  66. struct ilo_context;
  67.  
  68. static inline struct ilo_transfer *
  69. ilo_transfer(struct pipe_transfer *transfer)
  70. {
  71.    return (struct ilo_transfer *) transfer;
  72. }
  73.  
  74. void
  75. ilo_init_transfer_functions(struct ilo_context *ilo);
  76.  
  77. #endif /* ILO_TRANSFER_H */
  78.