src/mesa/drivers/dri/radeon/radeon_mipmap_tree.h

   1 /*
   2  * Copyright (C) 2008 Nicolai Haehnle.
   3  *
   4  * All Rights Reserved.
   5  *
   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:
  13  *
  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.
  17  *
  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.
  25  *
  26  */
  27
  28 #ifndef __RADEON_MIPMAP_TREE_H_
  29 #define __RADEON_MIPMAP_TREE_H_
  30
  31 #include "radeon_common.h"
  32
  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;
  36
  37 struct _radeon_mipmap_image {
  38         GLuint offset; /** Offset of this image from the start of mipmap tree buffer, in bytes */
  39 };
  40
  41 struct _radeon_mipmap_level {
  42         GLuint width;
  43         GLuint height;
  44         GLuint depth;
  45         GLuint size; /** Size of each image, in bytes */
  46         GLuint rowstride; /** in bytes */
  47         radeon_mipmap_image faces[6];
  48 };
  49
  50 /* store the max possible in the miptree */
  51 #define RADEON_MIPTREE_MAX_TEXTURE_LEVELS 13
  52
  53 /**
  54  * A mipmap tree contains texture images in the layout that the hardware
  55  * expects.
  56  *
  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
  59  * changed.
  60  */
  61 struct _radeon_mipmap_tree {
  62         struct radeon_bo *bo;
  63         GLuint refcount;
  64
  65         GLuint totalsize; /** total size of the miptree, in bytes */
  66
  67         GLenum target; /** GL_TEXTURE_xxx */
  68         GLenum mesaFormat; /** MESA_FORMAT_xxx */
  69         GLuint faces; /** # of faces: 6 for cubemaps, 1 otherwise */
  70         GLuint baseLevel; /** gl_texture_object->baseLevel it was created for */
  71         GLuint numLevels; /** Number of mip levels stored in this mipmap tree */
  72
  73         GLuint width0; /** Width of firstLevel image */
  74         GLuint height0; /** Height of firstLevel image */
  75         GLuint depth0; /** Depth of firstLevel image */
  76
  77         GLuint tilebits; /** RADEON_TXO_xxx_TILE */
  78
  79         radeon_mipmap_level levels[RADEON_MIPTREE_MAX_TEXTURE_LEVELS];
  80 };
  81
  82 void radeon_miptree_reference(radeon_mipmap_tree *mt, radeon_mipmap_tree **ptr);
  83 void radeon_miptree_unreference(radeon_mipmap_tree **ptr);
  84
  85 GLboolean radeon_miptree_matches_image(radeon_mipmap_tree *mt,
  86                 struct gl_texture_image *texImage, GLuint face, GLuint level);
  87 void radeon_try_alloc_miptree(radeonContextPtr rmesa, radeonTexObj *t);
  88 GLuint radeon_miptree_image_offset(radeon_mipmap_tree *mt,
  89                                    GLuint face, GLuint level);
  90 void radeon_miptree_depth_offsets(radeon_mipmap_tree *mt, GLuint level, GLuint *offsets);
  91
  92 unsigned radeon_miptree_level_to_gl_level(struct gl_texture_object *tObj, unsigned level);
  93 unsigned radeon_gl_level_to_miptree_level(struct gl_texture_object *tObj, unsigned level);
  94
  95 uint32_t get_base_teximage_offset(radeonTexObj *texObj);
  96 #endif /* __RADEON_MIPMAP_TREE_H_ */