| /* |
| * Copyright (C) 2008 Nicolai Haehnle. |
| * |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| |
| #ifndef __RADEON_MIPMAP_TREE_H_ |
| #define __RADEON_MIPMAP_TREE_H_ |
| |
| #include "radeon_common.h" |
| |
| typedef struct _radeon_mipmap_tree radeon_mipmap_tree; |
| typedef struct _radeon_mipmap_level radeon_mipmap_level; |
| typedef struct _radeon_mipmap_image radeon_mipmap_image; |
| |
| struct _radeon_mipmap_image { |
| GLuint offset; /** Offset of this image from the start of mipmap tree buffer, in bytes */ |
| }; |
| |
| struct _radeon_mipmap_level { |
| GLuint width; |
| GLuint height; |
| GLuint depth; |
| GLuint size; /** Size of each image, in bytes */ |
| GLuint rowstride; /** in bytes */ |
| radeon_mipmap_image faces[6]; |
| }; |
| |
| /* store the max possible in the miptree */ |
| #define RADEON_MIPTREE_MAX_TEXTURE_LEVELS 13 |
| |
| /** |
| * A mipmap tree contains texture images in the layout that the hardware |
| * expects. |
| * |
| * The meta-data of mipmap trees is immutable, i.e. you cannot change the |
| * layout on-the-fly; however, the texture contents (i.e. texels) can be |
| * changed. |
| */ |
| struct _radeon_mipmap_tree { |
| radeonContextPtr radeon; |
| radeonTexObj *t; |
| struct radeon_bo *bo; |
| GLuint refcount; |
| |
| GLuint totalsize; /** total size of the miptree, in bytes */ |
| |
| GLenum target; /** GL_TEXTURE_xxx */ |
| GLenum internal_format; |
| GLuint faces; /** # of faces: 6 for cubemaps, 1 otherwise */ |
| GLuint firstLevel; /** First mip level stored in this mipmap tree */ |
| GLuint lastLevel; /** Last mip level stored in this mipmap tree */ |
| |
| GLuint width0; /** Width of firstLevel image */ |
| GLuint height0; /** Height of firstLevel image */ |
| GLuint depth0; /** Depth of firstLevel image */ |
| |
| GLuint bpp; /** Bytes per texel */ |
| GLuint tilebits; /** RADEON_TXO_xxx_TILE */ |
| GLuint compressed; /** MESA_FORMAT_xxx indicating a compressed format, or 0 if uncompressed */ |
| |
| radeon_mipmap_level levels[RADEON_MIPTREE_MAX_TEXTURE_LEVELS]; |
| }; |
| |
| radeon_mipmap_tree* radeon_miptree_create(radeonContextPtr rmesa, radeonTexObj *t, |
| GLenum target, GLenum internal_format, GLuint firstLevel, GLuint lastLevel, |
| GLuint width0, GLuint height0, GLuint depth0, |
| GLuint bpp, GLuint tilebits, GLuint compressed); |
| void radeon_miptree_reference(radeon_mipmap_tree *mt); |
| void radeon_miptree_unreference(radeon_mipmap_tree *mt); |
| |
| GLboolean radeon_miptree_matches_image(radeon_mipmap_tree *mt, |
| struct gl_texture_image *texImage, GLuint face, GLuint level); |
| GLboolean radeon_miptree_matches_texture(radeon_mipmap_tree *mt, struct gl_texture_object *texObj); |
| void radeon_try_alloc_miptree(radeonContextPtr rmesa, radeonTexObj *t, |
| radeon_texture_image *texImage, GLuint face, GLuint level); |
| GLuint radeon_miptree_image_offset(radeon_mipmap_tree *mt, |
| GLuint face, GLuint level); |
| void radeon_miptree_depth_offsets(radeon_mipmap_tree *mt, GLuint level, GLuint *offsets); |
| #endif /* __RADEON_MIPMAP_TREE_H_ */ |