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
34struct 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   /* Offset for firstLevel image:
45    */
46   GLuint textureOffset;
47
48   /* On validation any active images held in main memory or in other
49    * regions will be copied to this region and the old storage freed.
50    */
51   struct intel_mipmap_tree *mt;
52};
53
54
55/**
56 * intel_texture_image is a subclass of swrast_texture_image because we
57 * sometimes fall back to using the swrast module for software rendering.
58 */
59struct intel_texture_image
60{
61   struct swrast_texture_image base;
62
63   /* If intelImage->mt != NULL, image data is stored here.
64    * Else if intelImage->base.Buffer != NULL, image is stored there.
65    * Else there is no image data.
66    */
67   struct intel_mipmap_tree *mt;
68};
69
70static INLINE struct intel_texture_object *
71intel_texture_object(struct gl_texture_object *obj)
72{
73   return (struct intel_texture_object *) obj;
74}
75
76static INLINE struct intel_texture_image *
77intel_texture_image(struct gl_texture_image *img)
78{
79   return (struct intel_texture_image *) img;
80}
81
82#endif /* _INTEL_TEX_OBJ_H */
83