2 * Copyright (C) 2008 Nicolai Haehnle.
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a 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, sublicense, 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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #ifndef __RADEON_MIPMAP_TREE_H_
29 #define __RADEON_MIPMAP_TREE_H_
31 #include "radeon_common.h"
33 typedef struct _radeon_mipmap_tree radeon_mipmap_tree
;
34 typedef struct _radeon_mipmap_level radeon_mipmap_level
;
35 typedef struct _radeon_mipmap_image radeon_mipmap_image
;
37 struct _radeon_mipmap_image
{
38 GLuint offset
; /** Offset of this image from the start of mipmap tree buffer, in bytes */
41 struct _radeon_mipmap_level
{
45 GLuint size
; /** Size of each image, in bytes */
46 GLuint rowstride
; /** in bytes */
47 radeon_mipmap_image faces
[6];
50 /* store the max possible in the miptree */
51 #define RADEON_MIPTREE_MAX_TEXTURE_LEVELS 13
54 * A mipmap tree contains texture images in the layout that the hardware
57 * The meta-data of mipmap trees is immutable, i.e. you cannot change the
58 * layout on-the-fly; however, the texture contents (i.e. texels) can be
61 struct _radeon_mipmap_tree
{
62 radeonContextPtr radeon
;
67 GLuint totalsize
; /** total size of the miptree, in bytes */
69 GLenum target
; /** GL_TEXTURE_xxx */
70 GLuint faces
; /** # of faces: 6 for cubemaps, 1 otherwise */
71 GLuint firstLevel
; /** First mip level stored in this mipmap tree */
72 GLuint lastLevel
; /** Last mip level stored in this mipmap tree */
74 GLuint width0
; /** Width of firstLevel image */
75 GLuint height0
; /** Height of firstLevel image */
76 GLuint depth0
; /** Depth of firstLevel image */
78 GLuint bpp
; /** Bytes per texel */
79 GLuint tilebits
; /** RADEON_TXO_xxx_TILE */
80 GLuint compressed
; /** MESA_FORMAT_xxx indicating a compressed format, or 0 if uncompressed */
82 radeon_mipmap_level levels
[RADEON_MIPTREE_MAX_TEXTURE_LEVELS
];
85 radeon_mipmap_tree
* radeon_miptree_create(radeonContextPtr rmesa
, radeonTexObj
*t
,
86 GLenum target
, GLuint firstLevel
, GLuint lastLevel
,
87 GLuint width0
, GLuint height0
, GLuint depth0
,
88 GLuint bpp
, GLuint tilebits
, GLuint compressed
);
89 void radeon_miptree_reference(radeon_mipmap_tree
*mt
);
90 void radeon_miptree_unreference(radeon_mipmap_tree
*mt
);
92 GLboolean
radeon_miptree_matches_image(radeon_mipmap_tree
*mt
,
93 struct gl_texture_image
*texImage
, GLuint face
, GLuint level
);
94 GLboolean
radeon_miptree_matches_texture(radeon_mipmap_tree
*mt
, struct gl_texture_object
*texObj
);
95 void radeon_try_alloc_miptree(radeonContextPtr rmesa
, radeonTexObj
*t
,
96 struct gl_texture_image
*texImage
, GLuint face
, GLuint level
);
97 GLuint
radeon_miptree_image_offset(radeon_mipmap_tree
*mt
,
98 GLuint face
, GLuint level
);
99 void radeon_miptree_depth_offsets(radeon_mipmap_tree
*mt
, GLuint level
, GLuint
*offsets
);
100 #endif /* __RADEON_MIPMAP_TREE_H_ */