text: /**************************************************************************
   * 
   * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   * All Rights Reserved.
   * 
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sub license, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   * 
   * The above copyright notice and this permission notice (including the
   * next paragraph) shall be included in all copies or substantial portions
   * of the Software.
   * 
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
   * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
   * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   * 
   **************************************************************************/
  
  #ifndef _INTEL_TEX_OBJ_H
  #define _INTEL_TEX_OBJ_H
  
  #include "swrast/s_context.h"
  
  
  struct intel_texture_object
  {
     struct gl_texture_object base;
  
     /* This is a mirror of base._MaxLevel, updated at validate time,
      * except that we don't bother with the non-base levels for
      * non-mipmapped textures.
      */
     unsigned int _MaxLevel;
  
     /* Offset for firstLevel image:
      */
     GLuint textureOffset;
  
     /* On validation any active images held in main memory or in other
      * regions will be copied to this region and the old storage freed.
      */
     struct intel_mipmap_tree *mt;
  };
  
  
  /**
   * intel_texture_image is a subclass of swrast_texture_image because we
   * sometimes fall back to using the swrast module for software rendering.
   */
  struct intel_texture_image
  {
     struct swrast_texture_image base;
  
     /* If intelImage->mt != NULL, image data is stored here.
      * Else if intelImage->base.Buffer != NULL, image is stored there.
      * Else there is no image data.
      */
     struct intel_mipmap_tree *mt;
  };
  
  static INLINE struct intel_texture_object *
  intel_texture_object(struct gl_texture_object *obj)
  {
     return (struct intel_texture_object *) obj;
  }
  
  static INLINE struct intel_texture_image *
  intel_texture_image(struct gl_texture_image *img)
  {
     return (struct intel_texture_image *) img;
  }
  
  #endif /* _INTEL_TEX_OBJ_H */
  