summaryrefslogtreecommitdiffstats
path: root/src/gallium/auxiliary/util/u_inlines.h
blob: 2fe680ff44c7e9b428d1cca3d889d3dcddc10efb (plain)
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
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
/**************************************************************************
 * 
 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
 * 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, 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 TUNGSTEN GRAPHICS 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 U_INLINES_H
#define U_INLINES_H

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_state.h"
#include "pipe/p_screen.h"
#include "util/u_debug.h"
#include "util/u_debug_describe.h"
#include "util/u_debug_refcnt.h"
#include "util/u_atomic.h"
#include "util/u_box.h"
#include "util/u_math.h"


#ifdef __cplusplus
extern "C" {
#endif


/*
 * Reference counting helper functions.
 */


static INLINE void
pipe_reference_init(struct pipe_reference *reference, unsigned count)
{
   p_atomic_set(&reference->count, count);
}

static INLINE boolean
pipe_is_referenced(struct pipe_reference *reference)
{
   return p_atomic_read(&reference->count) != 0;
}

/**
 * Update reference counting.
 * The old thing pointed to, if any, will be unreferenced.
 * Both 'ptr' and 'reference' may be NULL.
 * \return TRUE if the object's refcount hits zero and should be destroyed.
 */
static INLINE boolean
pipe_reference_described(struct pipe_reference *ptr, 
                         struct pipe_reference *reference, 
                         debug_reference_descriptor get_desc)
{
   boolean destroy = FALSE;

   if(ptr != reference) {
      /* bump the reference.count first */
      if (reference) {
         assert(pipe_is_referenced(reference));
         p_atomic_inc(&reference->count);
         debug_reference(reference, get_desc, 1);
      }

      if (ptr) {
         assert(pipe_is_referenced(ptr));
         if (p_atomic_dec_zero(&ptr->count)) {
            destroy = TRUE;
         }
         debug_reference(ptr, get_desc, -1);
      }
   }

   return destroy;
}

static INLINE boolean
pipe_reference(struct pipe_reference *ptr, struct pipe_reference *reference)
{
   return pipe_reference_described(ptr, reference, 
                                   (debug_reference_descriptor)debug_describe_reference);
}

static INLINE void
pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
{
   struct pipe_surface *old_surf = *ptr;

   if (pipe_reference_described(&(*ptr)->reference, &surf->reference, 
                                (debug_reference_descriptor)debug_describe_surface))
      old_surf->context->surface_destroy(old_surf->context, old_surf);
   *ptr = surf;
}

static INLINE void
pipe_resource_reference(struct pipe_resource **ptr, struct pipe_resource *tex)
{
   struct pipe_resource *old_tex = *ptr;

   if (pipe_reference_described(&(*ptr)->reference, &tex->reference, 
                                (debug_reference_descriptor)debug_describe_resource))
      old_tex->screen->resource_destroy(old_tex->screen, old_tex);
   *ptr = tex;
}

static INLINE void
pipe_sampler_view_reference(struct pipe_sampler_view **ptr, struct pipe_sampler_view *view)
{
   struct pipe_sampler_view *old_view = *ptr;

   if (pipe_reference_described(&(*ptr)->reference, &view->reference,
                                (debug_reference_descriptor)debug_describe_sampler_view))
      old_view->context->sampler_view_destroy(old_view->context, old_view);
   *ptr = view;
}

/**
 * Similar to pipe_sampler_view_reference() but always set the pointer to
 * NULL and pass in an explicit context.  Passing an explicit context is a
 * work-around for fixing a dangling context pointer problem when textures
 * are shared by multiple contexts.  XXX fix this someday.
 */
static INLINE void
pipe_sampler_view_release(struct pipe_context *ctx,
                          struct pipe_sampler_view **ptr)
{
   struct pipe_sampler_view *old_view = *ptr;
   if (*ptr && (*ptr)->context != ctx) {
      debug_printf_once(("context mis-match in pipe_sampler_view_release()\n"));
   }
   if (pipe_reference_described(&(*ptr)->reference, NULL,
                    (debug_reference_descriptor)debug_describe_sampler_view)) {
      ctx->sampler_view_destroy(ctx, old_view);
   }
   *ptr = NULL;
}


static INLINE void
pipe_so_target_reference(struct pipe_stream_output_target **ptr,
                         struct pipe_stream_output_target *target)
{
   struct pipe_stream_output_target *old = *ptr;

   if (pipe_reference_described(&(*ptr)->reference, &target->reference,
                     (debug_reference_descriptor)debug_describe_so_target))
      old->context->stream_output_target_destroy(old->context, old);
   *ptr = target;
}

static INLINE void
pipe_surface_reset(struct pipe_context *ctx, struct pipe_surface* ps,
                   struct pipe_resource *pt, unsigned level, unsigned layer,
                   unsigned flags)
{
   pipe_resource_reference(&ps->texture, pt);
   ps->format = pt->format;
   ps->width = u_minify(pt->width0, level);
   ps->height = u_minify(pt->height0, level);
   ps->usage = flags;
   ps->u.tex.level = level;
   ps->u.tex.first_layer = ps->u.tex.last_layer = layer;
   ps->context = ctx;
}

static INLINE void
pipe_surface_init(struct pipe_context *ctx, struct pipe_surface* ps,
                  struct pipe_resource *pt, unsigned level, unsigned layer,
                  unsigned flags)
{
   ps->texture = 0;
   pipe_reference_init(&ps->reference, 1);
   pipe_surface_reset(ctx, ps, pt, level, layer, flags);
}

/* Return true if the surfaces are equal. */
static INLINE boolean
pipe_surface_equal(struct pipe_surface *s1, struct pipe_surface *s2)
{
   return s1->texture == s2->texture &&
          s1->format == s2->format &&
          (s1->texture->target != PIPE_BUFFER ||
           (s1->u.buf.first_element == s2->u.buf.first_element &&
            s1->u.buf.last_element == s2->u.buf.last_element)) &&
          (s1->texture->target == PIPE_BUFFER ||
           (s1->u.tex.level == s2->u.tex.level &&
            s1->u.tex.first_layer == s2->u.tex.first_layer &&
            s1->u.tex.last_layer == s2->u.tex.last_layer));
}

/*
 * Convenience wrappers for screen buffer functions.
 */

static INLINE struct pipe_resource *
pipe_buffer_create( struct pipe_screen *screen,
		    unsigned bind,
		    unsigned usage,
		    unsigned size )
{
   struct pipe_resource buffer;
   memset(&buffer, 0, sizeof buffer);
   buffer.target = PIPE_BUFFER;
   buffer.format = PIPE_FORMAT_R8_UNORM; /* want TYPELESS or similar */
   buffer.bind = bind;
   buffer.usage = usage;
   buffer.flags = 0;
   buffer.width0 = size;
   buffer.height0 = 1;
   buffer.depth0 = 1;
   buffer.array_size = 1;
   return screen->resource_create(screen, &buffer);
}


static INLINE struct pipe_resource *
pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size,
			 unsigned usage )
{
   return screen->user_buffer_create(screen, ptr, size, usage);
}

static INLINE void *
pipe_buffer_map_range(struct pipe_context *pipe,
		      struct pipe_resource *buffer,
		      unsigned offset,
		      unsigned length,
		      unsigned usage,
		      struct pipe_transfer **transfer)
{
   struct pipe_box box;
   void *map;

   assert(offset < buffer->width0);
   assert(offset + length <= buffer->width0);
   assert(length);

   u_box_1d(offset, length, &box);

   *transfer = pipe->get_transfer( pipe,
                                   buffer,
                                   0,
                                   usage,
                                   &box);

   if (*transfer == NULL)
      return NULL;

   map = pipe->transfer_map( pipe, *transfer );
   if (map == NULL) {
      pipe->transfer_destroy( pipe, *transfer );
      *transfer = NULL;
      return NULL;
   }

   return map;
}


static INLINE void *
pipe_buffer_map(struct pipe_context *pipe,
                struct pipe_resource *buffer,
                unsigned usage,
                struct pipe_transfer **transfer)
{
   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, usage, transfer);
}


static INLINE void
pipe_buffer_unmap(struct pipe_context *pipe,
                  struct pipe_transfer *transfer)
{
   if (transfer) {
      pipe->transfer_unmap(pipe, transfer);
      pipe->transfer_destroy(pipe, transfer);
   }
}

static INLINE void
pipe_buffer_flush_mapped_range(struct pipe_context *pipe,
                               struct pipe_transfer *transfer,
                               unsigned offset,
                               unsigned length)
{
   struct pipe_box box;
   int transfer_offset;

   assert(length);
   assert(transfer->box.x <= offset);
   assert(offset + length <= transfer->box.x + transfer->box.width);

   /* Match old screen->buffer_flush_mapped_range() behaviour, where
    * offset parameter is relative to the start of the buffer, not the
    * mapped range.
    */
   transfer_offset = offset - transfer->box.x;

   u_box_1d(transfer_offset, length, &box);

   pipe->transfer_flush_region(pipe, transfer, &box);
}

static INLINE void
pipe_buffer_write(struct pipe_context *pipe,
                  struct pipe_resource *buf,
                  unsigned offset,
                  unsigned size,
                  const void *data)
{
   struct pipe_box box;
   unsigned usage = PIPE_TRANSFER_WRITE;

   if (offset == 0 && size == buf->width0) {
      usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
   } else {
      usage |= PIPE_TRANSFER_DISCARD_RANGE;
   }

   u_box_1d(offset, size, &box);

   pipe->transfer_inline_write( pipe,
                                buf,
                                0,
                                usage,
                                &box,
                                data,
                                size,
                                0);
}

/**
 * Special case for writing non-overlapping ranges.
 *
 * We can avoid GPU/CPU synchronization when writing range that has never
 * been written before.
 */
static INLINE void
pipe_buffer_write_nooverlap(struct pipe_context *pipe,
                            struct pipe_resource *buf,
                            unsigned offset, unsigned size,
                            const void *data)
{
   struct pipe_box box;

   u_box_1d(offset, size, &box);

   pipe->transfer_inline_write(pipe,
                               buf,
                               0,
                               (PIPE_TRANSFER_WRITE |
                                PIPE_TRANSFER_NOOVERWRITE),
                               &box,
                               data,
                               0, 0);
}

static INLINE void
pipe_buffer_read(struct pipe_context *pipe,
                 struct pipe_resource *buf,
                 unsigned offset,
                 unsigned size,
                 void *data)
{
   struct pipe_transfer *src_transfer;
   ubyte *map;

   map = (ubyte *) pipe_buffer_map_range(pipe,
					 buf,
					 offset, size,
					 PIPE_TRANSFER_READ,
					 &src_transfer);

   if (map)
      memcpy(data, map, size);

   pipe_buffer_unmap(pipe, src_transfer);
}

static INLINE struct pipe_transfer *
pipe_get_transfer( struct pipe_context *context,
                   struct pipe_resource *resource,
                   unsigned level, unsigned layer,
                   enum pipe_transfer_usage usage,
                   unsigned x, unsigned y,
                   unsigned w, unsigned h)
{
   struct pipe_box box;
   u_box_2d_zslice( x, y, layer, w, h, &box );
   return context->get_transfer( context,
                                 resource,
                                 level,
                                 usage,
                                 &box );
}

static INLINE void *
pipe_transfer_map( struct pipe_context *context,
                   struct pipe_transfer *transfer )
{
   return context->transfer_map( context, transfer );
}

static INLINE void
pipe_transfer_unmap( struct pipe_context *context,
                     struct pipe_transfer *transfer )
{
   context->transfer_unmap( context, transfer );
}


static INLINE void
pipe_transfer_destroy( struct pipe_context *context, 
                       struct pipe_transfer *transfer )
{
   context->transfer_destroy(context, transfer);
}


static INLINE boolean util_get_offset( 
   const struct pipe_rasterizer_state *templ,
   unsigned fill_mode)
{
   switch(fill_mode) {
   case PIPE_POLYGON_MODE_POINT:
      return templ->offset_point;
   case PIPE_POLYGON_MODE_LINE:
      return templ->offset_line;
   case PIPE_POLYGON_MODE_FILL:
      return templ->offset_tri;
   default:
      assert(0);
      return FALSE;
   }
}

/**
 * This function is used to copy an array of pipe_vertex_buffer structures,
 * while properly referencing the pipe_vertex_buffer::buffer member.
 *
 * \sa util_copy_framebuffer_state
 */
static INLINE void util_copy_vertex_buffers(struct pipe_vertex_buffer *dst,
                                            unsigned *dst_count,
                                            const struct pipe_vertex_buffer *src,
                                            unsigned src_count)
{
   unsigned i;

   /* Reference the buffers of 'src' in 'dst'. */
   for (i = 0; i < src_count; i++) {
      pipe_resource_reference(&dst[i].buffer, src[i].buffer);
   }
   /* Unreference the rest of the buffers in 'dst'. */
   for (; i < *dst_count; i++) {
      pipe_resource_reference(&dst[i].buffer, NULL);
   }

   /* Update the size of 'dst' and copy over the other members
    * of pipe_vertex_buffer. */
   *dst_count = src_count;
   memcpy(dst, src, src_count * sizeof(struct pipe_vertex_buffer));
}

static INLINE float
util_get_min_point_size(const struct pipe_rasterizer_state *state)
{
   /* The point size should be clamped to this value at the rasterizer stage.
    */
   return state->gl_rasterization_rules &&
          !state->point_quad_rasterization &&
          !state->point_smooth &&
          !state->multisample ? 1.0f : 0.0f;
}

#ifdef __cplusplus
}
#endif

#endif /* U_INLINES_H */