src/mesa/state_tracker/st_texture.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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   9  * without limitation the rights to use, copy, modify, merge, publish,
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  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
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  26  **************************************************************************/
  27
  28 #ifndef ST_TEXTURE_H
  29 #define ST_TEXTURE_H
  30
  31
  32 #include "main/mtypes.h"
  33
  34 struct pipe_context;
  35 struct pipe_texture;
  36
  37
  38 extern struct pipe_texture *
  39 st_texture_create(struct st_context *st,
  40                   enum pipe_texture_target target,
  41                   enum pipe_format format,
  42                   GLuint first_level,
  43                   GLuint last_level,
  44                   GLuint width0,
  45                   GLuint height0,
  46                   GLuint depth0,
  47                   GLuint compress_byte);
  48
  49
  50 /* Check if an image fits an existing texture
  51  */
  52 extern GLboolean
  53 st_texture_match_image(struct pipe_texture *pt,
  54                        struct gl_texture_image *image,
  55                        GLuint face, GLuint level);
  56
  57 /* Return a pointer to an image within a texture.  Return image stride as
  58  * well.
  59  */
  60 extern GLubyte *
  61 st_texture_image_map(struct st_context *st,
  62                      struct st_texture_image *stImage,
  63                      GLuint zoffset);
  64
  65 extern void
  66 st_texture_image_unmap(struct st_texture_image *stImage);
  67
  68
  69 /* Return pointers to each 2d slice within an image.  Indexed by depth
  70  * value.
  71  */
  72 extern const GLuint *
  73 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level);
  74
  75
  76 /* Return the linear offset of an image relative to the start of its region:
  77  */
  78 extern GLuint
  79 st_texture_image_offset(const struct pipe_texture *pt,
  80                         GLuint face, GLuint level);
  81
  82 extern GLuint
  83 st_texture_texel_offset(const struct pipe_texture * pt,
  84                         GLuint face, GLuint level,
  85                         GLuint col, GLuint row, GLuint img);
  86
  87
  88 /* Upload an image into a texture
  89  */
  90 extern void
  91 st_texture_image_data(struct pipe_context *pipe,
  92                       struct pipe_texture *dst,
  93                       GLuint face, GLuint level, void *src,
  94                       GLuint src_row_pitch, GLuint src_image_pitch);
  95
  96
  97 /* Copy an image between two textures
  98  */
  99 extern void
 100 st_texture_image_copy(struct pipe_context *pipe,
 101                       struct pipe_texture *dst,
 102                       GLuint face, GLuint level,
 103                       struct pipe_texture *src);
 104
 105
 106 #endif