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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2003 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,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. #ifndef _INTEL_TEX_OBJ_H
  29. #define _INTEL_TEX_OBJ_H
  30.  
  31. #include "swrast/s_context.h"
  32.  
  33.  
  34. struct intel_texture_object
  35. {
  36.    struct gl_texture_object base;
  37.  
  38.    /* This is a mirror of base._MaxLevel, updated at validate time,
  39.     * except that we don't bother with the non-base levels for
  40.     * non-mipmapped textures.
  41.     */
  42.    unsigned int _MaxLevel;
  43.  
  44.    /* On validation any active images held in main memory or in other
  45.     * regions will be copied to this region and the old storage freed.
  46.     */
  47.    struct intel_mipmap_tree *mt;
  48.  
  49.    /**
  50.     * Set when mipmap trees in the texture images of this texture object
  51.     * might not all be the mipmap tree above.
  52.     */
  53.    bool needs_validate;
  54. };
  55.  
  56.  
  57. /**
  58.  * intel_texture_image is a subclass of swrast_texture_image because we
  59.  * sometimes fall back to using the swrast module for software rendering.
  60.  */
  61. struct intel_texture_image
  62. {
  63.    struct swrast_texture_image base;
  64.  
  65.    /* If intelImage->mt != NULL, image data is stored here.
  66.     * Else if intelImage->base.Buffer != NULL, image is stored there.
  67.     * Else there is no image data.
  68.     */
  69.    struct intel_mipmap_tree *mt;
  70. };
  71.  
  72. static INLINE struct intel_texture_object *
  73. intel_texture_object(struct gl_texture_object *obj)
  74. {
  75.    return (struct intel_texture_object *) obj;
  76. }
  77.  
  78. static INLINE struct intel_texture_image *
  79. intel_texture_image(struct gl_texture_image *img)
  80. {
  81.    return (struct intel_texture_image *) img;
  82. }
  83.  
  84. #endif /* _INTEL_TEX_OBJ_H */
  85.