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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2003 VMware, Inc.
  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 VMWARE 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.    unsigned int validated_first_level;
  45.    unsigned int validated_last_level;
  46.  
  47.    /* The miptree of pixel data for the texture (if !needs_validate).  After
  48.     * validation, the images will also have references to the same mt.
  49.     */
  50.    struct intel_mipmap_tree *mt;
  51.  
  52.    /**
  53.     * Set when mipmap trees in the texture images of this texture object
  54.     * might not all be the mipmap tree above.
  55.     */
  56.    bool needs_validate;
  57.  
  58.    /* Mesa format for the validated texture object. For non-views this
  59.     * will always be the same as mt->format. For views, it may differ
  60.     * since the mt is shared across views with differing formats.
  61.     */
  62.    mesa_format _Format;
  63. };
  64.  
  65.  
  66. /**
  67.  * intel_texture_image is a subclass of swrast_texture_image because we
  68.  * sometimes fall back to using the swrast module for software rendering.
  69.  */
  70. struct intel_texture_image
  71. {
  72.    struct swrast_texture_image base;
  73.  
  74.    /* If intelImage->mt != NULL, image data is stored here.
  75.     * Else if intelImage->base.Buffer != NULL, image is stored there.
  76.     * Else there is no image data.
  77.     */
  78.    struct intel_mipmap_tree *mt;
  79. };
  80.  
  81. static inline struct intel_texture_object *
  82. intel_texture_object(struct gl_texture_object *obj)
  83. {
  84.    return (struct intel_texture_object *) obj;
  85. }
  86.  
  87. static inline struct intel_texture_image *
  88. intel_texture_image(struct gl_texture_image *img)
  89. {
  90.    return (struct intel_texture_image *) img;
  91. }
  92.  
  93. #endif /* _INTEL_TEX_OBJ_H */
  94.