aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/gallium/auxiliary/util/u_surface.c
blob: 2c197c3df6ae8d5a36a3ab6d9deaaab4e31b566a (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
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
/**************************************************************************
 *
 * Copyright 2009 VMware, Inc.  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 VMWARE 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.
 *
 **************************************************************************/

/**
 * @file
 * Surface utility functions.
 *  
 * @author Brian Paul
 */


#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "pipe/p_state.h"

#include "util/u_format.h"
#include "util/u_inlines.h"
#include "util/u_rect.h"
#include "util/u_surface.h"
#include "util/u_pack_color.h"


/**
 * Initialize a pipe_surface object.  'view' is considered to have
 * uninitialized contents.
 */
void
u_surface_default_template(struct pipe_surface *surf,
                           const struct pipe_resource *texture,
                           unsigned bind)
{
   memset(surf, 0, sizeof(*surf));

   surf->format = texture->format;
   /* XXX should filter out all non-rt/ds bind flags ? */
   surf->usage = bind;
}

/**
 * Helper to quickly create an RGBA rendering surface of a certain size.
 * \param textureOut  returns the new texture
 * \param surfaceOut  returns the new surface
 * \return TRUE for success, FALSE if failure
 */
boolean
util_create_rgba_texture(struct pipe_context *pipe,
                         uint width, uint height, uint bind,
                         struct pipe_resource **textureOut)
{
   static const enum pipe_format rgbaFormats[] = {
      PIPE_FORMAT_B8G8R8A8_UNORM,
      PIPE_FORMAT_A8R8G8B8_UNORM,
      PIPE_FORMAT_A8B8G8R8_UNORM,
      PIPE_FORMAT_NONE
   };
   const uint target = PIPE_TEXTURE_2D;
   enum pipe_format format = PIPE_FORMAT_NONE;
   struct pipe_resource templ;
   struct pipe_surface surf_templ;
   struct pipe_screen *screen = pipe->screen;
   uint i;

   /* Choose surface format */
   for (i = 0; rgbaFormats[i]; i++) {
      if (screen->is_format_supported(screen, rgbaFormats[i],
                                      target, 0, bind)) {
         format = rgbaFormats[i];
         break;
      }
   }
   if (format == PIPE_FORMAT_NONE)
      return FALSE;  /* unable to get an rgba format!?! */

   /* create texture */
   memset(&templ, 0, sizeof(templ));
   templ.target = target;
   templ.format = format;
   templ.last_level = 0;
   templ.width0 = width;
   templ.height0 = height;
   templ.depth0 = 1;
   templ.array_size = 1;
   templ.bind = bind;

   *textureOut = screen->resource_create(screen, &templ);
   if (!*textureOut)
      return FALSE;

   /* create surface */
   u_surface_default_template(&surf_templ, *textureOut, bind);
   return TRUE;
}


/**
 * Copy 2D rect from one place to another.
 * Position and sizes are in pixels.
 * src_stride may be negative to do vertical flip of pixels from source.
 */
void
util_copy_rect(ubyte * dst,
               enum pipe_format format,
               unsigned dst_stride,
               unsigned dst_x,
               unsigned dst_y,
               unsigned width,
               unsigned height,
               const ubyte * src,
               int src_stride,
               unsigned src_x,
               unsigned src_y)
{
   unsigned i;
   int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
   int blocksize = util_format_get_blocksize(format);
   int blockwidth = util_format_get_blockwidth(format);
   int blockheight = util_format_get_blockheight(format);

   assert(blocksize > 0);
   assert(blockwidth > 0);
   assert(blockheight > 0);

   dst_x /= blockwidth;
   dst_y /= blockheight;
   width = (width + blockwidth - 1)/blockwidth;
   height = (height + blockheight - 1)/blockheight;
   src_x /= blockwidth;
   src_y /= blockheight;

   dst += dst_x * blocksize;
   src += src_x * blocksize;
   dst += dst_y * dst_stride;
   src += src_y * src_stride_pos;
   width *= blocksize;

   if (width == dst_stride && width == src_stride)
      memcpy(dst, src, height * width);
   else {
      for (i = 0; i < height; i++) {
         memcpy(dst, src, width);
         dst += dst_stride;
         src += src_stride;
      }
   }
}


/**
 * Copy 3D box from one place to another.
 * Position and sizes are in pixels.
 */
void
util_copy_box(ubyte * dst,
              enum pipe_format format,
              unsigned dst_stride, unsigned dst_slice_stride,
              unsigned dst_x, unsigned dst_y, unsigned dst_z,
              unsigned width, unsigned height, unsigned depth,
              const ubyte * src,
              int src_stride, unsigned src_slice_stride,
              unsigned src_x, unsigned src_y, unsigned src_z)
{
   unsigned z;
   dst += dst_z * dst_slice_stride;
   src += src_z * src_slice_stride;
   for (z = 0; z < depth; ++z) {
      util_copy_rect(dst,
                     format,
                     dst_stride,
                     dst_x, dst_y,
                     width, height,
                     src,
                     src_stride,
                     src_x, src_y);

      dst += dst_slice_stride;
      src += src_slice_stride;
   }
}


void
util_fill_rect(ubyte * dst,
               enum pipe_format format,
               unsigned dst_stride,
               unsigned dst_x,
               unsigned dst_y,
               unsigned width,
               unsigned height,
               union util_color *uc)
{
   const struct util_format_description *desc = util_format_description(format);
   unsigned i, j;
   unsigned width_size;
   int blocksize = desc->block.bits / 8;
   int blockwidth = desc->block.width;
   int blockheight = desc->block.height;

   assert(blocksize > 0);
   assert(blockwidth > 0);
   assert(blockheight > 0);

   dst_x /= blockwidth;
   dst_y /= blockheight;
   width = (width + blockwidth - 1)/blockwidth;
   height = (height + blockheight - 1)/blockheight;

   dst += dst_x * blocksize;
   dst += dst_y * dst_stride;
   width_size = width * blocksize;

   switch (blocksize) {
   case 1:
      if(dst_stride == width_size)
         memset(dst, uc->ub, height * width_size);
      else {
         for (i = 0; i < height; i++) {
            memset(dst, uc->ub, width_size);
            dst += dst_stride;
         }
      }
      break;
   case 2:
      for (i = 0; i < height; i++) {
         uint16_t *row = (uint16_t *)dst;
         for (j = 0; j < width; j++)
            *row++ = uc->us;
         dst += dst_stride;
      }
      break;
   case 4:
      for (i = 0; i < height; i++) {
         uint32_t *row = (uint32_t *)dst;
         for (j = 0; j < width; j++)
            *row++ = uc->ui;
         dst += dst_stride;
      }
      break;
   default:
      for (i = 0; i < height; i++) {
         ubyte *row = dst;
         for (j = 0; j < width; j++) {
            memcpy(row, uc, blocksize);
            row += blocksize;
         }
         dst += dst_stride;
      }
      break;
   }
}


/**
 * Fallback function for pipe->resource_copy_region().
 * Note: (X,Y)=(0,0) is always the upper-left corner.
 */
void
util_resource_copy_region(struct pipe_context *pipe,
                          struct pipe_resource *dst,
                          unsigned dst_level,
                          unsigned dst_x, unsigned dst_y, unsigned dst_z,
                          struct pipe_resource *src,
                          unsigned src_level,
                          const struct pipe_box *src_box)
{
   struct pipe_transfer *src_trans, *dst_trans;
   uint8_t *dst_map;
   const uint8_t *src_map;
   enum pipe_format src_format, dst_format;
   struct pipe_box dst_box;

   assert(src && dst);
   if (!src || !dst)
      return;

   assert((src->target == PIPE_BUFFER && dst->target == PIPE_BUFFER) ||
          (src->target != PIPE_BUFFER && dst->target != PIPE_BUFFER));

   src_format = src->format;
   dst_format = dst->format;

   assert(util_format_get_blocksize(dst_format) == util_format_get_blocksize(src_format));
   assert(util_format_get_blockwidth(dst_format) == util_format_get_blockwidth(src_format));
   assert(util_format_get_blockheight(dst_format) == util_format_get_blockheight(src_format));

   src_map = pipe->transfer_map(pipe,
                                src,
                                src_level,
                                PIPE_TRANSFER_READ,
                                src_box, &src_trans);
   assert(src_map);
   if (!src_map) {
      goto no_src_map;
   }

   dst_box.x = dst_x;
   dst_box.y = dst_y;
   dst_box.z = dst_z;
   dst_box.width  = src_box->width;
   dst_box.height = src_box->height;
   dst_box.depth  = src_box->depth;

   dst_map = pipe->transfer_map(pipe,
                                dst,
                                dst_level,
                                PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
                                &dst_box, &dst_trans);
   assert(dst_map);
   if (!dst_map) {
      goto no_dst_map;
   }

   if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
      assert(src_box->height == 1);
      assert(src_box->depth == 1);
      memcpy(dst_map, src_map, src_box->width);
   } else {
      util_copy_box(dst_map,
                    dst_format,
                    dst_trans->stride, dst_trans->layer_stride,
                    0, 0, 0,
                    src_box->width, src_box->height, src_box->depth,
                    src_map,
                    src_trans->stride, src_trans->layer_stride,
                    0, 0, 0);
   }

   pipe->transfer_unmap(pipe, dst_trans);
no_dst_map:
   pipe->transfer_unmap(pipe, src_trans);
no_src_map:
   ;
}



#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))


/**
 * Fallback for pipe->clear_render_target() function.
 * XXX this looks too hackish to be really useful.
 * cpp > 4 looks like a gross hack at best...
 * Plus can't use these transfer fallbacks when clearing
 * multisampled surfaces for instance.
 */
void
util_clear_render_target(struct pipe_context *pipe,
                         struct pipe_surface *dst,
                         const union pipe_color_union *color,
                         unsigned dstx, unsigned dsty,
                         unsigned width, unsigned height)
{
   struct pipe_transfer *dst_trans;
   void *dst_map;
   union util_color uc;

   assert(dst->texture);
   if (!dst->texture)
      return;
   /* XXX: should handle multiple layers */
   dst_map = pipe_transfer_map(pipe,
                               dst->texture,
                               dst->u.tex.level,
                               dst->u.tex.first_layer,
                               PIPE_TRANSFER_WRITE,
                               dstx, dsty, width, height, &dst_trans);

   assert(dst_map);

   if (dst_map) {
      assert(dst_trans->stride > 0);

      util_pack_color(color->f, dst->texture->format, &uc);
      util_fill_rect(dst_map, dst->texture->format,
                     dst_trans->stride,
                     0, 0, width, height, &uc);

      pipe->transfer_unmap(pipe, dst_trans);
   }
}

/**
 * Fallback for pipe->clear_stencil() function.
 * sw fallback doesn't look terribly useful here.
 * Plus can't use these transfer fallbacks when clearing
 * multisampled surfaces for instance.
 */
void
util_clear_depth_stencil(struct pipe_context *pipe,
                         struct pipe_surface *dst,
                         unsigned clear_flags,
                         double depth,
                         unsigned stencil,
                         unsigned dstx, unsigned dsty,
                         unsigned width, unsigned height)
{
   enum pipe_format format = dst->format;
   struct pipe_transfer *dst_trans;
   ubyte *dst_map;
   boolean need_rmw = FALSE;

   if ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) &&
       ((clear_flags & PIPE_CLEAR_DEPTHSTENCIL) != PIPE_CLEAR_DEPTHSTENCIL) &&
       util_format_is_depth_and_stencil(format))
      need_rmw = TRUE;

   assert(dst->texture);
   if (!dst->texture)
      return;
   dst_map = pipe_transfer_map(pipe,
                               dst->texture,
                               dst->u.tex.level,
                               dst->u.tex.first_layer,
                               (need_rmw ? PIPE_TRANSFER_READ_WRITE :
                                           PIPE_TRANSFER_WRITE),
                               dstx, dsty, width, height, &dst_trans);
   assert(dst_map);

   if (dst_map) {
      unsigned dst_stride = dst_trans->stride;
      uint64_t zstencil = util_pack64_z_stencil(format,
                                                depth, stencil);
      unsigned i, j;
      assert(dst_trans->stride > 0);

      switch (util_format_get_blocksize(format)) {
      case 1:
         assert(format == PIPE_FORMAT_S8_UINT);
         if(dst_stride == width)
            memset(dst_map, (uint8_t) zstencil, height * width);
         else {
            for (i = 0; i < height; i++) {
               memset(dst_map, (uint8_t) zstencil, width);
               dst_map += dst_stride;
            }
         }
         break;
      case 2:
         assert(format == PIPE_FORMAT_Z16_UNORM);
         for (i = 0; i < height; i++) {
            uint16_t *row = (uint16_t *)dst_map;
            for (j = 0; j < width; j++)
               *row++ = (uint16_t) zstencil;
            dst_map += dst_stride;
            }
         break;
      case 4:
         if (!need_rmw) {
            for (i = 0; i < height; i++) {
               uint32_t *row = (uint32_t *)dst_map;
               for (j = 0; j < width; j++)
                  *row++ = (uint32_t) zstencil;
               dst_map += dst_stride;
            }
         }
         else {
            uint32_t dst_mask;
            if (format == PIPE_FORMAT_Z24_UNORM_S8_UINT)
               dst_mask = 0xffffff00;
            else {
               assert(format == PIPE_FORMAT_S8_UINT_Z24_UNORM);
               dst_mask = 0xffffff;
            }
            if (clear_flags & PIPE_CLEAR_DEPTH)
               dst_mask = ~dst_mask;
            for (i = 0; i < height; i++) {
               uint32_t *row = (uint32_t *)dst_map;
               for (j = 0; j < width; j++) {
                  uint32_t tmp = *row & dst_mask;
                  *row++ = tmp | ((uint32_t) zstencil & ~dst_mask);
               }
               dst_map += dst_stride;
            }
         }
         break;
      case 8:
         if (!need_rmw) {
            for (i = 0; i < height; i++) {
               uint64_t *row = (uint64_t *)dst_map;
               for (j = 0; j < width; j++)
                  *row++ = zstencil;
               dst_map += dst_stride;
            }
         }
         else {
            uint64_t src_mask;

            if (clear_flags & PIPE_CLEAR_DEPTH)
               src_mask = 0x00000000ffffffffull;
            else
               src_mask = 0x000000ff00000000ull;

            for (i = 0; i < height; i++) {
               uint64_t *row = (uint64_t *)dst_map;
               for (j = 0; j < width; j++) {
                  uint64_t tmp = *row & ~src_mask;
                  *row++ = tmp | (zstencil & src_mask);
               }
               dst_map += dst_stride;
            }
         }
         break;
      default:
         assert(0);
         break;
      }

      pipe->transfer_unmap(pipe, dst_trans);
   }
}