src/mesa/drivers/dri/common/texmem.h

   1 /*
   2  * Copyright 2000-2001 VA Linux Systems, Inc.
   3  * (c) Copyright IBM Corporation 2002
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * on the rights to use, copy, modify, merge, publish, distribute, sub
  10  * license, and/or sell copies of the Software, and to permit persons to whom
  11  * the Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  20  * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  23  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  * Authors:
  26  *    Ian Romanick <idr@us.ibm.com>
  27  *    Keith Whitwell <keithw@tungstengraphics.com>
  28  *    Kevin E. Martin <kem@users.sourceforge.net>
  29  *    Gareth Hughes <gareth@nvidia.com>
  30  */
  31
  32 /** \file texmem.h
  33  * Public interface to the DRI texture memory management routines.
  34  *
  35  * \sa texmem.c
  36  */
  37
  38 #ifndef DRI_TEXMEM_H
  39 #define DRI_TEXMEM_H
  40
  41 #include "main/mtypes.h"
  42 #include "main/formats.h"
  43 #include "main/mm.h"
  44 #include "xf86drm.h"
  45
  46 struct dri_tex_heap;
  47 typedef struct dri_tex_heap driTexHeap;
  48
  49 struct dri_texture_object;
  50 typedef struct dri_texture_object driTextureObject;
  51
  52
  53 /**
  54  * Base texture object type.  Each driver will extend this type with its own
  55  * private data members.
  56  */
  57
  58 struct dri_texture_object {
  59         struct dri_texture_object * next;
  60         struct dri_texture_object * prev;
  61
  62         driTexHeap * heap;              /**< Texture heap currently stored in */
  63         struct gl_texture_object * tObj;/**< Pointer to Mesa texture object
  64                                          * If NULL, this texture object is a
  65                                          * "placeholder" object representing
  66                                          * texture memory in use by another context.
  67                                          * A placeholder should have a heap and a memBlock.
  68                                          */
  69         struct mem_block *memBlock;     /**< Memory block containing texture */
  70
  71         unsigned    reserved;           /**< Cannot be swapped out by user contexts.  */
  72
  73         unsigned    bound;              /**< Bitmask indicating which tex units
  74                                          * this texture object is bound to.
  75                                          * Bit 0 = unit 0, Bit 1 = unit 1, etc
  76                                          */
  77
  78         unsigned    totalSize;          /**< Total size of the texture,
  79                                          * including all mipmap levels
  80                                          */
  81
  82         unsigned    dirty_images[6];    /**< Flags for whether or not images
  83                                          * need to be uploaded to local or
  84                                          * AGP texture space.  One flag set
  85                                          * for each cube face for cubic
  86                                          * textures.  Bit zero corresponds to
  87                                          * the base-level, which may or may
  88                                          * not be the level zero mipmap.
  89                                          */
  90
  91         unsigned    timestamp;          /**< Timestamp used to
  92                                          * synchronize with 3d engine
  93                                          * in hardware where textures
  94                                          * are uploaded directly to
  95                                          * the framebuffer.
  96                                          */
  97
  98         unsigned    firstLevel;         /**< Image in \c tObj->Image[0] that
  99                                          * corresponds to the base-level of
 100                                          * this texture object.
 101                                          */
 102
 103         unsigned    lastLevel;          /**< Last image in \c tObj->Image[0]
 104                                          * used by the
 105                                          * current LOD settings of
 106                                          * this texture object.  This
 107                                          * value must be greater than
 108                                          * or equal to \c firstLevel.
 109                                          */
 110 };
 111
 112
 113 typedef void (destroy_texture_object_t)( void * driverContext,
 114                                         driTextureObject * t );
 115
 116 /**
 117  * Client-private representation of texture memory state.
 118  *
 119  * Clients will place one or more of these structs in their driver
 120  * context struct to manage one or more global texture heaps.
 121  */
 122
 123 struct dri_tex_heap {
 124
 125         /** Client-supplied heap identifier
 126          */
 127         unsigned heapId;
 128
 129         /** Pointer to the client's private context
 130          */
 131         void *driverContext;
 132
 133         /** Total size of the heap, in bytes
 134          */
 135         unsigned size;
 136
 137         /** \brief \f$log_2\f$ of size of single heap region
 138          *
 139          * Each context takes memory from the global texture heap in
 140          * \f$2^{logGranularity}\f$ byte blocks.  The value of
 141          * \a logGranularity is based on the amount of memory represented
 142          * by the heap and the maximum number of regions in the SAREA.  Given
 143          * \a b bytes of texture memory an \a n regions in the SAREA,
 144          * \a logGranularity will be \f$\lfloor\log_2( b / n )\rfloor\f$.
 145          */
 146         unsigned logGranularity;
 147
 148         /** \brief Required alignment of allocations in this heap
 149          *
 150          * The alignment shift is supplied to \a mmAllocMem when memory is
 151          * allocated from this heap.  The value of \a alignmentShift will
 152          * typically reflect some require of the hardware.  This value has
 153          * \b no \b relation to \a logGranularity.  \a alignmentShift is a
 154          * per-context value.
 155          *
 156          * \sa mmAllocMem
 157          */
 158         unsigned alignmentShift;
 159
 160         /** Number of elements in global list (the SAREA).
 161          */
 162         unsigned nrRegions;
 163
 164         /** Pointer to SAREA \a driTexRegion array
 165          */
 166         drmTextureRegionPtr global_regions;
 167
 168         /** Pointer to the texture state age (generation number) in the SAREA
 169          */
 170         unsigned     * global_age;
 171
 172         /** Local age (generation number) of texture state
 173          */
 174         unsigned local_age;
 175
 176         /** Memory heap used to manage texture memory represented by
 177          * this texture heap.
 178          */
 179         struct mem_block * memory_heap;
 180
 181         /** List of objects that we currently believe to be in texture
 182          * memory.
 183          */
 184         driTextureObject     texture_objects;
 185
 186         /** Pointer to the list of texture objects that are not in
 187          * texture memory.
 188          */
 189         driTextureObject   * swapped_objects;
 190
 191         /** Size of the driver-speicific texture object.
 192          */
 193         unsigned       texture_object_size;
 194
 195
 196         /**
 197          * \brief Function to destroy driver-specific texture object data.
 198          *
 199          * This function is supplied by the driver so that the texture manager
 200          * can release all resources associated with a texture object.  This
 201          * function should only release driver-specific data.  That is,
 202          * \a driDestroyTextureObject will release the texture memory
 203          * associated with the texture object, it will release the memory
 204          * for the texture object itself, and it will unlink the texture
 205          * object from the texture object lists.
 206          *
 207          * \param driverContext Pointer to the driver supplied context
 208          * \param t Texture object that is to be destroyed
 209          * \sa driDestroyTextureObject
 210          */
 211
 212         destroy_texture_object_t * destroy_texture_object;
 213
 214
 215         /**
 216          */
 217         unsigned * texture_swaps;
 218
 219         /**
 220          * Timestamp used to synchronize with 3d engine in hardware
 221          * where textures are uploaded directly to the
 222          * framebuffer.
 223          */
 224         unsigned timestamp;
 225
 226         /** \brief Kick/upload weight
 227          *
 228          * When not enough free space is available this weight
 229          * influences the choice of the heap from which textures are
 230          * kicked. By default the weight is equal to the heap size.
 231          */
 232         double weight;
 233
 234         /** \brief Kick/upload duty
 235          *
 236          * The heap with the highest duty will be chosen for kicking
 237          * textures if not enough free space is available. The duty is
 238          * reduced by the amount of data kicked. Rebalancing of
 239          * negative duties takes the weights into account.
 240          */
 241         int duty;
 242 };
 243
 244
 245
 246
 247 /**
 248  * Called by the client on lock contention to determine whether textures have
 249  * been stolen.  If another client has modified a region in which we have
 250  * textures, then we need to figure out which of our textures have been
 251  * removed and update our global LRU.
 252  *
 253  * \param heap Texture heap to be updated
 254  * \hideinitializer
 255  */
 256
 257 #define DRI_AGE_TEXTURES( heap )                                \
 258    do {                                                         \
 259        if ( ((heap) != NULL)                                    \
 260             && ((heap)->local_age != (heap)->global_age[0]) )   \
 261            driAgeTextures( heap );                              \
 262    } while( 0 )
 263
 264
 265
 266
 267 /* This should be called whenever there has been contention on the hardware
 268  * lock.  driAgeTextures should not be called directly.  Instead, clients
 269  * should use DRI_AGE_TEXTURES, above.
 270  */
 271
 272 void driAgeTextures( driTexHeap * heap );
 273
 274 void driUpdateTextureLRU( driTextureObject * t );
 275 void driSwapOutTextureObject( driTextureObject * t );
 276 void driDestroyTextureObject( driTextureObject * t );
 277 int driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,
 278     driTextureObject * t );
 279
 280 GLboolean driIsTextureResident( struct gl_context * ctx,
 281     struct gl_texture_object * texObj );
 282
 283 driTexHeap * driCreateTextureHeap( unsigned heap_id, void * context,
 284     unsigned size, unsigned alignmentShift, unsigned nr_regions,
 285     drmTextureRegionPtr global_regions, unsigned * global_age,
 286     driTextureObject * swapped_objects, unsigned texture_object_size,
 287     destroy_texture_object_t * destroy_tex_obj );
 288 void driDestroyTextureHeap( driTexHeap * heap );
 289
 290 void
 291 driCalculateMaxTextureLevels( driTexHeap * const * heaps,
 292                               unsigned nr_heaps,
 293                               struct gl_constants * limits,
 294                               unsigned max_bytes_per_texel,
 295                               unsigned max_2D_size,
 296                               unsigned max_3D_size,
 297                               unsigned max_cube_size,
 298                               unsigned max_rect_size,
 299                               unsigned mipmaps_at_once,
 300                               int all_textures_one_heap,
 301                               int allow_larger_textures );
 302
 303 void
 304 driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter );
 305
 306 #define DRI_TEXMGR_DO_TEXTURE_1D    0x0001
 307 #define DRI_TEXMGR_DO_TEXTURE_2D    0x0002
 308 #define DRI_TEXMGR_DO_TEXTURE_3D    0x0004
 309 #define DRI_TEXMGR_DO_TEXTURE_CUBE  0x0008
 310 #define DRI_TEXMGR_DO_TEXTURE_RECT  0x0010
 311
 312 void driInitTextureObjects( struct gl_context *ctx, driTextureObject * swapped,
 313                             GLuint targets );
 314
 315 GLboolean driValidateTextureHeaps( driTexHeap * const * texture_heaps,
 316     unsigned nr_heaps, const driTextureObject * swapped );
 317
 318 extern void driCalculateTextureFirstLastLevel( driTextureObject * t );
 319
 320
 321 extern gl_format _dri_texformat_rgba8888;
 322 extern gl_format _dri_texformat_argb8888;
 323 extern gl_format _dri_texformat_rgb565;
 324 extern gl_format _dri_texformat_argb4444;
 325 extern gl_format _dri_texformat_argb1555;
 326 extern gl_format _dri_texformat_al88;
 327 extern gl_format _dri_texformat_a8;
 328 extern gl_format _dri_texformat_ci8;
 329 extern gl_format _dri_texformat_i8;
 330 extern gl_format _dri_texformat_l8;
 331
 332 extern void driInitTextureFormats( void );
 333
 334 #endif /* DRI_TEXMEM_H */