src/gallium/drivers/llvmpipe/lp_texture.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef LP_TEXTURE_H
  29 #define LP_TEXTURE_H
  30
  31
  32 #include "pipe/p_state.h"
  33
  34
  35 #define LP_MAX_TEXTURE_2D_LEVELS 13  /* 4K x 4K for now */
  36 #define LP_MAX_TEXTURE_3D_LEVELS 10  /* 512 x 512 x 512 for now */
  37
  38
  39 struct pipe_context;
  40 struct pipe_screen;
  41 struct llvmpipe_context;
  42
  43 struct sw_displaytarget;
  44
  45
  46 struct llvmpipe_texture
  47 {
  48    struct pipe_texture base;
  49
  50    unsigned long level_offset[LP_MAX_TEXTURE_2D_LEVELS];
  51    unsigned stride[LP_MAX_TEXTURE_2D_LEVELS];
  52
  53    /**
  54     * Display target, for textures with the PIPE_TEXTURE_USAGE_DISPLAY_TARGET
  55     * usage.
  56     */
  57    struct sw_displaytarget *dt;
  58
  59    /**
  60     * Malloc'ed data for regular textures, or a mapping to dt above.
  61     */
  62    void *data;
  63
  64    unsigned timestamp;
  65 };
  66
  67
  68 struct llvmpipe_transfer
  69 {
  70    struct pipe_transfer base;
  71
  72    unsigned long offset;
  73 };
  74
  75
  76 /** cast wrappers */
  77 static INLINE struct llvmpipe_texture *
  78 llvmpipe_texture(struct pipe_texture *pt)
  79 {
  80    return (struct llvmpipe_texture *) pt;
  81 }
  82
  83
  84 static INLINE const struct llvmpipe_texture *
  85 llvmpipe_texture_const(const struct pipe_texture *pt)
  86 {
  87    return (const struct llvmpipe_texture *) pt;
  88 }
  89
  90
  91 static INLINE struct llvmpipe_transfer *
  92 llvmpipe_transfer(struct pipe_transfer *pt)
  93 {
  94    return (struct llvmpipe_transfer *) pt;
  95 }
  96
  97
  98 static INLINE unsigned
  99 llvmpipe_texture_stride(struct pipe_texture *texture,
 100                         unsigned level)
 101 {
 102    struct llvmpipe_texture *lpt = llvmpipe_texture(texture);
 103    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
 104    return lpt->stride[level];
 105 }
 106
 107
 108 void *
 109 llvmpipe_texture_map(struct pipe_texture *texture,
 110                      unsigned face,
 111                      unsigned level,
 112                      unsigned zslice);
 113
 114 void
 115 llvmpipe_texture_unmap(struct pipe_texture *texture,
 116                        unsigned face,
 117                        unsigned level,
 118                        unsigned zslice);
 119
 120 extern void
 121 llvmpipe_init_screen_texture_funcs(struct pipe_screen *screen);
 122
 123 extern void
 124 llvmpipe_init_context_texture_funcs(struct pipe_context *pipe);
 125
 126 #endif /* LP_TEXTURE_H */