summaryrefslogtreecommitdiff
path: root/src/mesa/state_tracker/st_texture.c
blob: 5a45c4358a95980c6e0f3d6971857b0b5f9296f2 (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
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
/**************************************************************************
 * 
 * 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.
 * 
 **************************************************************************/

#include "st_context.h"
#include "st_format.h"
#include "st_public.h"
#include "st_texture.h"
#include "st_cb_fbo.h"
#include "st_inlines.h"
#include "main/enums.h"
#include "main/texfetch.h"
#include "main/teximage.h"
#include "main/texobj.h"

#undef Elements  /* fix re-defined macro warning */

#include "pipe/p_state.h"
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_rect.h"
#include "util/u_math.h"


#define DBG if(0) printf

#if 0
static GLenum
target_to_target(GLenum target)
{
   switch (target) {
   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
      return GL_TEXTURE_CUBE_MAP_ARB;
   default:
      return target;
   }
}
#endif


/**
 * Allocate a new pipe_texture object
 * width0, height0, depth0 are the dimensions of the level 0 image
 * (the highest resolution).  last_level indicates how many mipmap levels
 * to allocate storage for.  For non-mipmapped textures, this will be zero.
 */
struct pipe_texture *
st_texture_create(struct st_context *st,
                  enum pipe_texture_target target,
		  enum pipe_format format,
		  GLuint last_level,
		  GLuint width0,
		  GLuint height0,
		  GLuint depth0,
                  GLuint usage )
{
   struct pipe_texture pt, *newtex;
   struct pipe_screen *screen = st->pipe->screen;

   assert(target <= PIPE_TEXTURE_CUBE);

   DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
       _mesa_lookup_enum_by_nr(target),
       _mesa_lookup_enum_by_nr(format), last_level);

   assert(format);
   assert(screen->is_format_supported(screen, format, target, 
                                      PIPE_TEXTURE_USAGE_SAMPLER, 0));

   memset(&pt, 0, sizeof(pt));
   pt.target = target;
   pt.format = format;
   pt.last_level = last_level;
   pt.width0 = width0;
   pt.height0 = height0;
   pt.depth0 = depth0;
   pt.tex_usage = usage;

   newtex = screen->texture_create(screen, &pt);

   assert(!newtex || pipe_is_referenced(&newtex->reference));

   return newtex;
}


/**
 * Check if a texture image can be pulled into a unified mipmap texture.
 */
GLboolean
st_texture_match_image(const struct pipe_texture *pt,
                       const struct gl_texture_image *image,
                       GLuint face, GLuint level)
{
   /* Images with borders are never pulled into mipmap textures. 
    */
   if (image->Border) 
      return GL_FALSE;

   /* Check if this image's format matches the established texture's format.
    */
   if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
      return GL_FALSE;

   /* Test if this image's size matches what's expected in the
    * established texture.
    */
   if (image->Width != u_minify(pt->width0, level) ||
       image->Height != u_minify(pt->height0, level) ||
       image->Depth != u_minify(pt->depth0, level))
      return GL_FALSE;

   return GL_TRUE;
}


#if 000
/* Although we use the image_offset[] array to store relative offsets
 * to cube faces, Mesa doesn't know anything about this and expects
 * each cube face to be treated as a separate image.
 *
 * These functions present that view to mesa:
 */
const GLuint *
st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
{
   static const GLuint zero = 0;

   if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
      return &zero;
   else
      return pt->level[level].image_offset;
}


/**
 * Return the offset to the given mipmap texture image within the
 * texture memory buffer, in bytes.
 */
GLuint
st_texture_image_offset(const struct pipe_texture * pt,
                        GLuint face, GLuint level)
{
   if (pt->target == PIPE_TEXTURE_CUBE)
      return (pt->level[level].level_offset +
              pt->level[level].image_offset[face] * pt->cpp);
   else
      return pt->level[level].level_offset;
}
#endif


/**
 * Map a teximage in a mipmap texture.
 * \param row_stride  returns row stride in bytes
 * \param image_stride  returns image stride in bytes (for 3D textures).
 * \return address of mapping
 */
GLubyte *
st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
		     GLuint zoffset, enum pipe_transfer_usage usage,
                     GLuint x, GLuint y, GLuint w, GLuint h)
{
   struct pipe_context *pipe = st->pipe;
   struct pipe_screen *screen = pipe->screen;
   struct pipe_texture *pt = stImage->pt;

   DBG("%s \n", __FUNCTION__);

   stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
						    stImage->level, zoffset,
						    usage, x, y, w, h);

   if (stImage->transfer)
      return screen->transfer_map(screen, stImage->transfer);
   else
      return NULL;
}


void
st_texture_image_unmap(struct st_context *st,
                       struct st_texture_image *stImage)
{
   struct pipe_screen *screen = st->pipe->screen;

   DBG("%s\n", __FUNCTION__);

   screen->transfer_unmap(screen, stImage->transfer);

   screen->tex_transfer_destroy(stImage->transfer);
}



/**
 * Upload data to a rectangular sub-region.  Lots of choices how to do this:
 *
 * - memcpy by span to current destination
 * - upload data as new buffer and blit
 *
 * Currently always memcpy.
 */
static void
st_surface_data(struct pipe_context *pipe,
		struct pipe_transfer *dst,
		unsigned dstx, unsigned dsty,
		const void *src, unsigned src_stride,
		unsigned srcx, unsigned srcy, unsigned width, unsigned height)
{
   struct pipe_screen *screen = pipe->screen;
   void *map = screen->transfer_map(screen, dst);

   assert(dst->texture);
   util_copy_rect(map,
                  dst->texture->format,
                  dst->stride,
                  dstx, dsty, 
                  width, height, 
                  src, src_stride, 
                  srcx, srcy);

   screen->transfer_unmap(screen, dst);
}


/* Upload data for a particular image.
 */
void
st_texture_image_data(struct st_context *st,
                      struct pipe_texture *dst,
                      GLuint face,
                      GLuint level,
                      void *src,
                      GLuint src_row_stride, GLuint src_image_stride)
{
   struct pipe_context *pipe = st->pipe;
   struct pipe_screen *screen = pipe->screen;
   GLuint depth = u_minify(dst->depth0, level);
   GLuint i;
   const GLubyte *srcUB = src;
   struct pipe_transfer *dst_transfer;

   DBG("%s\n", __FUNCTION__);

   for (i = 0; i < depth; i++) {
      dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
						  PIPE_TRANSFER_WRITE, 0, 0,
						  u_minify(dst->width0, level),
                                                  u_minify(dst->height0, level));

      st_surface_data(pipe, dst_transfer,
		      0, 0,                             /* dstx, dsty */
		      srcUB,
		      src_row_stride,
		      0, 0,                             /* source x, y */
		      u_minify(dst->width0, level),
                      u_minify(dst->height0, level));      /* width, height */

      screen->tex_transfer_destroy(dst_transfer);

      srcUB += src_image_stride;
   }
}


/* Copy mipmap image between textures
 */
void
st_texture_image_copy(struct pipe_context *pipe,
                      struct pipe_texture *dst, GLuint dstLevel,
                      struct pipe_texture *src,
                      GLuint face)
{
   struct pipe_screen *screen = pipe->screen;
   GLuint width = u_minify(dst->width0, dstLevel); 
   GLuint height = u_minify(dst->height0, dstLevel); 
   GLuint depth = u_minify(dst->depth0, dstLevel); 
   struct pipe_surface *src_surface;
   struct pipe_surface *dst_surface;
   GLuint i;

   for (i = 0; i < depth; i++) {
      GLuint srcLevel;

      /* find src texture level of needed size */
      for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
         if (u_minify(src->width0, srcLevel) == width &&
             u_minify(src->height0, srcLevel) == height) {
            break;
         }
      }
      assert(u_minify(src->width0, srcLevel) == width);
      assert(u_minify(src->height0, srcLevel) == height);

#if 0
      {
         src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
                                               PIPE_BUFFER_USAGE_CPU_READ);
         ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
         map += src_surface->width * src_surface->height * 4 / 2;
         printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
                __FUNCTION__,
                map[0], map[1], map[2], map[3],
                src, srcLevel, dst, dstLevel);

         screen->surface_unmap(screen, src_surface);
         pipe_surface_reference(&src_surface, NULL);
      }
#endif

      dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
                                            PIPE_BUFFER_USAGE_GPU_WRITE);

      src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
                                            PIPE_BUFFER_USAGE_GPU_READ);

      if (pipe->surface_copy) {
         pipe->surface_copy(pipe,
			    dst_surface,
			    0, 0, /* destX, Y */
			    src_surface,
			    0, 0, /* srcX, Y */
			    width, height);
      } else {
         util_surface_copy(pipe, FALSE,
			   dst_surface,
			   0, 0, /* destX, Y */
			   src_surface,
			   0, 0, /* srcX, Y */
			   width, height);
      }

      pipe_surface_reference(&src_surface, NULL);
      pipe_surface_reference(&dst_surface, NULL);
   }
}


/**
 * Bind a pipe surface to a texture object.  After the call,
 * the texture object is marked dirty and will be (re-)validated.
 *
 * If this is the first surface bound, the texture object is said to
 * switch from normal to surface based.  It will be cleared first in
 * this case.
 *
 * \param ps      pipe surface to be unbound
 * \param target  texture target
 * \param level   image level
 * \param format  internal format of the texture
 */
int
st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
                        enum pipe_format format)
{
   GET_CURRENT_CONTEXT(ctx);
   const GLuint unit = ctx->Texture.CurrentUnit;
   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *texObj;
   struct gl_texture_image *texImage;
   struct st_texture_object *stObj;
   struct st_texture_image *stImage;
   GLenum internalFormat;

   switch (target) {
   case ST_TEXTURE_2D:
      target = GL_TEXTURE_2D;
      break;
   case ST_TEXTURE_RECT:
      target = GL_TEXTURE_RECTANGLE_ARB;
      break;
   default:
      return 0;
   }

   /* map pipe format to base format for now */
   if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3) > 0)
      internalFormat = GL_RGBA;
   else
      internalFormat = GL_RGB;

   texObj = _mesa_select_tex_object(ctx, texUnit, target);
   _mesa_lock_texture(ctx, texObj);

   stObj = st_texture_object(texObj);
   /* switch to surface based */
   if (!stObj->surface_based) {
      _mesa_clear_texture_object(ctx, texObj);
      stObj->surface_based = GL_TRUE;
   }

   texImage = _mesa_get_tex_image(ctx, texObj, target, level);
   stImage = st_texture_image(texImage);

   _mesa_init_teximage_fields(ctx, target, texImage,
                              ps->width, ps->height, 1, 0, internalFormat);
   texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat,
                                                GL_RGBA, GL_UNSIGNED_BYTE);
   _mesa_set_fetch_functions(texImage, 2);
   pipe_texture_reference(&stImage->pt, ps->texture);

   _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
   _mesa_unlock_texture(ctx, texObj);
   
   return 1;
}


/**
 * Unbind a pipe surface from a texture object.  After the call,
 * the texture object is marked dirty and will be (re-)validated.
 *
 * \param ps      pipe surface to be unbound
 * \param target  texture target
 * \param level   image level
 */
int
st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
{
   GET_CURRENT_CONTEXT(ctx);
   const GLuint unit = ctx->Texture.CurrentUnit;
   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *texObj;
   struct gl_texture_image *texImage;
   struct st_texture_object *stObj;
   struct st_texture_image *stImage;

   switch (target) {
   case ST_TEXTURE_2D:
      target = GL_TEXTURE_2D;
      break;
   case ST_TEXTURE_RECT:
      target = GL_TEXTURE_RECTANGLE_ARB;
      break;
   default:
      return 0;
   }

   texObj = _mesa_select_tex_object(ctx, texUnit, target);

   _mesa_lock_texture(ctx, texObj);

   texImage = _mesa_get_tex_image(ctx, texObj, target, level);
   stObj = st_texture_object(texObj);
   stImage = st_texture_image(texImage);

   /* Make sure the pipe surface is still bound.  The texture object is still
    * considered surface based even if this is the last bound surface. */
   if (stImage->pt == ps->texture) {
      pipe_texture_reference(&stImage->pt, NULL);
      _mesa_clear_texture_image(ctx, texImage);

      _mesa_dirty_texobj(ctx, texObj, GL_TRUE);
   }

   _mesa_unlock_texture(ctx, texObj);
   
   return 1;
}


/** Redirect rendering into stfb's surface to a texture image */
int
st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
                 int target, int format, int level)
{
   GET_CURRENT_CONTEXT(ctx);
   struct st_context *st = ctx->st;
   struct pipe_context *pipe = st->pipe;
   struct pipe_screen *screen = pipe->screen;
   const GLuint unit = ctx->Texture.CurrentUnit;
   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
   struct gl_texture_object *texObj;
   struct gl_texture_image *texImage;
   struct st_texture_image *stImage;
   struct st_renderbuffer *strb;
   GLint face = 0, slice = 0;

   assert(surfIndex <= ST_SURFACE_DEPTH);

   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);

   if (strb->texture_save || strb->surface_save) {
      /* Error! */
      return 0;
   }

   if (target == ST_TEXTURE_2D) {
      texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX];
      texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
      stImage = st_texture_image(texImage);
   }
   else {
      /* unsupported target */
      return 0;
   }

   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);

   /* save the renderbuffer's surface/texture info */
   pipe_texture_reference(&strb->texture_save, strb->texture);
   pipe_surface_reference(&strb->surface_save, strb->surface);

   /* plug in new surface/texture info */
   pipe_texture_reference(&strb->texture, stImage->pt);
   strb->surface = screen->get_tex_surface(screen, strb->texture,
                                           face, level, slice,
                                           (PIPE_BUFFER_USAGE_GPU_READ |
                                            PIPE_BUFFER_USAGE_GPU_WRITE));

   st->dirty.st |= ST_NEW_FRAMEBUFFER;

   return 1;
}


/** Undo surface-to-texture binding */
int
st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
                    int target, int format, int level)
{
   GET_CURRENT_CONTEXT(ctx);
   struct st_context *st = ctx->st;
   struct st_renderbuffer *strb;

   assert(surfIndex <= ST_SURFACE_DEPTH);

   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);

   if (!strb->texture_save || !strb->surface_save) {
      /* Error! */
      return 0;
   }

   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);

   /* free tex surface, restore original */
   pipe_surface_reference(&strb->surface, strb->surface_save);
   pipe_texture_reference(&strb->texture, strb->texture_save);

   pipe_surface_reference(&strb->surface_save, NULL);
   pipe_texture_reference(&strb->texture_save, NULL);

   st->dirty.st |= ST_NEW_FRAMEBUFFER;

   return 1;
}

void
st_teximage_flush_before_map(struct st_context *st,
			     struct pipe_texture *pt,
			     unsigned int face,
			     unsigned int level,
			     enum pipe_transfer_usage usage)
{
   struct pipe_context *pipe = st->pipe;
   unsigned referenced =
      pipe->is_texture_referenced(pipe, pt, face, level);

   if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
		      (usage & PIPE_TRANSFER_WRITE)))
      st->pipe->flush(st->pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
}