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 /* 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 *
intel_texture_object(struct gl_texture_object * obj)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 *
intel_texture_image(struct gl_texture_image * img)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