1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
|
/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* (c) Copyright IBM Corporation 2002
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEM, IBM AND/OR THEIR 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.
*
* Authors:
* Ian Romanick <idr@us.ibm.com>
* Keith Whitwell <keithw@tungstengraphics.com>
* Kevin E. Martin <kem@users.sourceforge.net>
* Gareth Hughes <gareth@nvidia.com>
*/
/* $XFree86:$ */
/** \file texmem.h
* Public interface to the DRI texture memory management routines.
*
* \sa texmem.c
*/
#ifndef DRI_TEXMEM_H
#define DRI_TEXMEM_H
#include "mtypes.h"
#include "mm.h"
#include "xf86drm.h"
struct dri_tex_heap;
typedef struct dri_tex_heap driTexHeap;
struct dri_texture_object;
typedef struct dri_texture_object driTextureObject;
/**
* Base texture object type. Each driver will extend this type with its own
* private data members.
*/
struct dri_texture_object {
struct dri_texture_object * next;
struct dri_texture_object * prev;
driTexHeap * heap; /**< Texture heap currently stored in */
struct gl_texture_object * tObj;/**< Pointer to Mesa texture object
* If NULL, this texture object is a
* "placeholder" object representing
* texture memory in use by another context.
* A placeholder should have a heap and a memBlock.
*/
PMemBlock memBlock; /**< Memory block containing texture */
unsigned bound; /**< Texture unit currently bound to */
unsigned totalSize; /**< Total size of the texture,
* including all mipmap levels
*/
unsigned dirty_images[6]; /**< Flags for whether or not images
* need to be uploaded to local or
* AGP texture space. One flag set
* for each cube face for cubic
* textures. Bit zero corresponds to
* the base-level, which may or may
* not be the level zero mipmap.
*/
unsigned timestamp; /**< Timestamp used to
* synchronize with 3d engine
* in hardware where textures
* are uploaded directly to
* the framebuffer.
*/
unsigned firstLevel; /**< Image in \c tObj->Image[0] that
* corresponds to the base-level of
* this texture object.
*/
unsigned lastLevel; /**< Last image in \c tObj->Image[0]
* used by the
* current LOD settings of
* this texture object. This
* value must be greater than
* or equal to \c firstLevel.
*/
};
typedef void (destroy_texture_object_t)( void * driverContext,
driTextureObject * t );
/**
* Client-private representation of texture memory state.
*
* Clients will place one or more of these structs in their driver
* context struct to manage one or more global texture heaps.
*/
struct dri_tex_heap {
/** Client-supplied heap identifier
*/
unsigned heapId;
/** Pointer to the client's private context
*/
void *driverContext;
/** Total size of the heap, in bytes
*/
unsigned size;
/** \brief \f$log_2\f$ of size of single heap region
*
* Each context takes memory from the global texture heap in
* \f$2^{logGranularity}\f$ byte blocks. The value of
* \a logGranularity is based on the amount of memory represented
* by the heap and the maximum number of regions in the SAREA. Given
* \a b bytes of texture memory an \a n regions in the SAREA,
* \a logGranularity will be \f$\lfloor\log_2( b / n )\rfloor\f$.
*/
unsigned logGranularity;
/** \brief Required alignment of allocations in this heap
*
* The alignment shift is supplied to \a mmAllocMem when memory is
* allocated from this heap. The value of \a alignmentShift will
* typically reflect some require of the hardware. This value has
* \b no \b relation to \a logGranularity. \a alignmentShift is a
* per-context value.
*
* \sa mmAllocMem
*/
unsigned alignmentShift;
/** Number of elements in global list (the SAREA).
*/
unsigned nrRegions;
/** Pointer to SAREA \a driTexRegion array
*/
drmTextureRegionPtr global_regions;
/** Pointer to the texture state age (generation number) in the SAREA
*/
unsigned * global_age;
/** Local age (generation number) of texture state
*/
unsigned local_age;
/** Memory heap used to manage texture memory represented by
* this texture heap.
*/
memHeap_t * memory_heap;
/** List of objects that we currently believe to be in texture
* memory.
*/
driTextureObject texture_objects;
/** Pointer to the list of texture objects that are not in
* texture memory.
*/
driTextureObject * swapped_objects;
/** Size of the driver-speicific texture object.
*/
unsigned texture_object_size;
/**
* \brief Function to destroy driver-specific texture object data.
*
* This function is supplied by the driver so that the texture manager
* can release all resources associated with a texture object. This
* function should only release driver-specific data. That is,
* \a driDestroyTextureObject will release the texture memory
* associated with the texture object, it will release the memory
* for the texture object itself, and it will unlink the texture
* object from the texture object lists.
*
* \param driverContext Pointer to the driver supplied context
* \param t Texture object that is to be destroyed
* \sa driDestroyTextureObject
*/
destroy_texture_object_t * destroy_texture_object;
/**
*/
unsigned * texture_swaps;
/**
* Timestamp used to synchronize with 3d engine in hardware
* where textures are uploaded directly to the
* framebuffer.
*/
unsigned timestamp;
/** \brief Kick/upload weight
*
* When not enough free space is available this weight
* influences the choice of the heap from which textures are
* kicked. By default the weight is equal to the heap size.
*/
double weight;
/** \brief Kick/upload duty
*
* The heap with the highest duty will be chosen for kicking
* textures if not enough free space is available. The duty is
* reduced by the amount of data kicked. Rebalancing of
* negative duties takes the weights into account.
*/
int duty;
};
/**
* Called by the client on lock contention to determine whether textures have
* been stolen. If another client has modified a region in which we have
* textures, then we need to figure out which of our textures have been
* removed and update our global LRU.
*
* \param heap Texture heap to be updated
* \hideinitializer
*/
#define DRI_AGE_TEXTURES( heap ) \
do { \
if ( ((heap) != NULL) \
&& ((heap)->local_age != (heap)->global_age[0]) ) \
driAgeTextures( heap ); \
} while( 0 )
/* This should be called whenever there has been contention on the hardware
* lock. driAgeTextures should not be called directly. Instead, clients
* should use DRI_AGE_TEXTURES, above.
*/
void driAgeTextures( driTexHeap * heap );
void driUpdateTextureLRU( driTextureObject * t );
void driSwapOutTextureObject( driTextureObject * t );
void driDestroyTextureObject( driTextureObject * t );
int driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,
driTextureObject * t );
GLboolean driIsTextureResident( GLcontext * ctx,
struct gl_texture_object * texObj );
driTexHeap * driCreateTextureHeap( unsigned heap_id, void * context,
unsigned size, unsigned alignmentShift, unsigned nr_regions,
drmTextureRegionPtr global_regions, unsigned * global_age,
driTextureObject * swapped_objects, unsigned texture_object_size,
destroy_texture_object_t * destroy_tex_obj );
void driDestroyTextureHeap( driTexHeap * heap );
void
driCalculateMaxTextureLevels( driTexHeap * const * heaps,
unsigned nr_heaps,
struct gl_constants * limits,
unsigned max_bytes_per_texel,
unsigned max_2D_size,
unsigned max_3D_size,
unsigned max_cube_size,
unsigned max_rect_size,
unsigned mipmaps_at_once,
int all_textures_one_heap );
void
driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter );
#define DRI_TEXMGR_DO_TEXTURE_1D 0x0001
#define DRI_TEXMGR_DO_TEXTURE_2D 0x0002
#define DRI_TEXMGR_DO_TEXTURE_3D 0x0004
#define DRI_TEXMGR_DO_TEXTURE_CUBE 0x0008
#define DRI_TEXMGR_DO_TEXTURE_RECT 0x0010
void driInitTextureObjects( GLcontext *ctx, driTextureObject * swapped,
GLuint targets );
GLboolean driValidateTextureHeaps( driTexHeap * const * texture_heaps,
unsigned nr_heaps, const driTextureObject * swapped );
extern void driCalculateTextureFirstLastLevel( driTextureObject * t );
extern const struct gl_texture_format *_dri_texformat_rgba8888;
extern const struct gl_texture_format *_dri_texformat_argb8888;
extern const struct gl_texture_format *_dri_texformat_rgb565;
extern const struct gl_texture_format *_dri_texformat_argb4444;
extern const struct gl_texture_format *_dri_texformat_argb1555;
extern const struct gl_texture_format *_dri_texformat_al88;
extern const struct gl_texture_format *_dri_texformat_a8;
extern const struct gl_texture_format *_dri_texformat_ci8;
extern const struct gl_texture_format *_dri_texformat_i8;
extern const struct gl_texture_format *_dri_texformat_l8;
extern void driInitTextureFormats( void );
#endif /* DRI_TEXMEM_H */
|
