1 /*
2 * Copyright 2003 VMware, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #ifndef _INTEL_TEX_OBJ_H
27 #define _INTEL_TEX_OBJ_H
28
29 #include "swrast/s_context.h"
30
31
32 struct intel_texture_object
33 {
34 struct gl_texture_object base;
35
36 /* This is a mirror of base._MaxLevel, updated at validate time,
37 * except that we don't bother with the non-base levels for
38 * non-mipmapped textures.
39 */
40 unsigned int _MaxLevel;
41
42 unsigned int validated_first_level;
43 unsigned int validated_last_level;
44
45 /* The miptree of pixel data for the texture (if !needs_validate). After
46 * validation, the images will also have references to the same mt.
47 */
48 struct intel_mipmap_tree *mt;
49
50 /**
51 * Set when mipmap trees in the texture images of this texture object
52 * might not all be the mipmap tree above.
53 */
54 bool needs_validate;
55
56 /* Mesa format for the validated texture object. For non-views this
57 * will always be the same as mt->format. For views, it may differ
58 * since the mt is shared across views with differing formats.
59 */
60 mesa_format _Format;
61
62 const struct intel_image_format *planar_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 *
intel_texture_object(struct gl_texture_object * obj)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 *
intel_texture_image(struct gl_texture_image * img)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