src/mesa/state_tracker/st_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,
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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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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  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 struct pipe_region;
  37
  38
  39 extern struct pipe_texture *
  40 st_texture_create(struct st_context *st,
  41                   unsigned target,
  42                   unsigned format,
  43                   GLenum internal_format,
  44                   GLuint first_level,
  45                   GLuint last_level,
  46                   GLuint width0,
  47                   GLuint height0,
  48                   GLuint depth0,
  49                   GLuint compress_byte);
  50
  51
  52 /* Check if an image fits an existing texture
  53  */
  54 extern GLboolean
  55 st_texture_match_image(struct pipe_texture *pt,
  56                        struct gl_texture_image *image,
  57                        GLuint face, GLuint level);
  58
  59 /* Return a pointer to an image within a texture.  Return image stride as
  60  * well.
  61  */
  62 extern GLubyte *
  63 st_texture_image_map(struct st_context *st,
  64                      struct st_texture_image *stImage,
  65                      GLuint zoffset);
  66
  67 extern void
  68 st_texture_image_unmap(struct st_context *st,
  69                        struct st_texture_image *stImage);
  70
  71
  72 /* Return pointers to each 2d slice within an image.  Indexed by depth
  73  * value.
  74  */
  75 extern const GLuint *
  76 st_texture_depth_offsets(struct pipe_texture *pt, GLuint level);
  77
  78
  79 /* Return the linear offset of an image relative to the start of its region:
  80  */
  81 extern GLuint
  82 st_texture_image_offset(const struct pipe_texture *pt,
  83                         GLuint face, GLuint level);
  84
  85 extern GLuint
  86 st_texture_texel_offset(const struct pipe_texture * pt,
  87                         GLuint face, GLuint level,
  88                         GLuint col, GLuint row, GLuint img);
  89
  90
  91 /* Upload an image into a texture
  92  */
  93 extern void
  94 st_texture_image_data(struct pipe_context *pipe,
  95                       struct pipe_texture *dst,
  96                       GLuint face, GLuint level, void *src,
  97                       GLuint src_row_pitch, GLuint src_image_pitch);
  98
  99
 100 /* Copy an image between two textures
 101  */
 102 extern void
 103 st_texture_image_copy(struct pipe_context *pipe,
 104                       struct pipe_texture *dst,
 105                       GLuint face, GLuint level,
 106                       struct pipe_texture *src);
 107
 108
 109 #endif