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/*
* 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 __R300_MIPMAP_TREE_H_
#define __R300_MIPMAP_TREE_H_
#include "r300_context.h"
typedef struct _r300_mipmap_tree r300_mipmap_tree;
typedef struct _r300_mipmap_level r300_mipmap_level;
typedef struct _r300_mipmap_image r300_mipmap_image;
struct _r300_mipmap_image {
GLuint offset; /** Offset of this image from the start of mipmap tree buffer, in bytes */
};
struct _r300_mipmap_level {
GLuint width;
GLuint height;
GLuint depth;
GLuint size; /** Size of each image, in bytes */
GLuint rowstride; /** in bytes */
r300_mipmap_image faces[6];
};
/**
* 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 _r300_mipmap_tree {
r300ContextPtr r300;
r300TexObj *t;
struct radeon_bo *bo;
GLuint refcount;
GLuint totalsize; /** total size of the miptree, in bytes */
GLenum target; /** GL_TEXTURE_xxx */
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; /** R300_TXO_xxx_TILE */
GLuint compressed; /** MESA_FORMAT_xxx indicating a compressed format, or 0 if uncompressed */
r300_mipmap_level levels[RADEON_MAX_TEXTURE_LEVELS];
};
r300_mipmap_tree* r300_miptree_create(r300ContextPtr rmesa, r300TexObj *t,
GLenum target, GLuint firstLevel, GLuint lastLevel,
GLuint width0, GLuint height0, GLuint depth0,
GLuint bpp, GLuint tilebits, GLuint compressed);
void r300_miptree_reference(r300_mipmap_tree *mt);
void r300_miptree_unreference(r300_mipmap_tree *mt);
GLboolean r300_miptree_matches_image(r300_mipmap_tree *mt,
struct gl_texture_image *texImage, GLuint face, GLuint level);
GLboolean r300_miptree_matches_texture(r300_mipmap_tree *mt, struct gl_texture_object *texObj);
void r300_try_alloc_miptree(r300ContextPtr rmesa, r300TexObj *t,
struct gl_texture_image *texImage, GLuint face, GLuint level);
#endif /* __R300_MIPMAP_TREE_H_ */
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