src/gallium/drivers/ilo/ilo_transfer.h

   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 */