summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/intel/intel_mipmap_tree.c
blob: b96ba72853e6a18b4a1a8f804f767fea1a1140ee (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
/**************************************************************************
 * 
 * Copyright 2006 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 "intel_context.h"
#include "intel_mipmap_tree.h"
#include "intel_regions.h"
#include "intel_chipset.h"
#include "main/enums.h"

#define FILE_DEBUG_FLAG DEBUG_MIPTREE

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;
   }
}

static struct intel_mipmap_tree *
intel_miptree_create_internal(struct intel_context *intel,
			      GLenum target,
			      GLenum internal_format,
			      GLuint first_level,
			      GLuint last_level,
			      GLuint width0,
			      GLuint height0,
			      GLuint depth0, GLuint cpp, GLuint compress_byte)
{
   GLboolean ok;
   struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);

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

   mt->target = target_to_target(target);
   mt->internal_format = internal_format;
   mt->first_level = first_level;
   mt->last_level = last_level;
   mt->width0 = width0;
   mt->height0 = height0;
   mt->depth0 = depth0;
   mt->cpp = compress_byte ? compress_byte : cpp;
   mt->compressed = compress_byte ? 1 : 0;
   mt->refcount = 1; 
   mt->pitch = 0;

#ifdef I915
   if (IS_945(intel->intelScreen->deviceID))
      ok = i945_miptree_layout(intel, mt);
   else
      ok = i915_miptree_layout(intel, mt);
#else
   ok = brw_miptree_layout(intel, mt);
#endif

   if (!ok) {
      free(mt);
      return NULL;
   }

   return mt;
}

struct intel_mipmap_tree *
intel_miptree_create(struct intel_context *intel,
		     GLenum target,
		     GLenum internal_format,
		     GLuint first_level,
		     GLuint last_level,
		     GLuint width0,
		     GLuint height0,
		     GLuint depth0, GLuint cpp, GLuint compress_byte)
{
   struct intel_mipmap_tree *mt;

   mt = intel_miptree_create_internal(intel, target, internal_format,
				      first_level, last_level, width0,
				      height0, depth0, cpp, compress_byte);
   /*
    * pitch == 0 indicates the null texture
    */
   if (!mt || !mt->pitch)
      return NULL;

   mt->region = intel_region_alloc(intel,
				   mt->cpp,
				   mt->pitch,
				   mt->total_height,
				   mt->pitch);

   if (!mt->region) {
       free(mt);
       return NULL;
   }

   return mt;
}

struct intel_mipmap_tree *
intel_miptree_create_for_region(struct intel_context *intel,
				GLenum target,
				GLenum internal_format,
				GLuint first_level,
				GLuint last_level,
				struct intel_region *region,
				GLuint depth0,
				GLuint compress_byte)
{
   struct intel_mipmap_tree *mt;

   mt = intel_miptree_create_internal(intel, target, internal_format,
				      first_level, last_level,
				      region->width, region->height, 1,
				      region->cpp, compress_byte);
   if (!mt)
      return mt;
#if 0
   if (mt->pitch != region->pitch) {
      fprintf(stderr,
	      "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
	      region->pitch, mt->pitch);
      free(mt);
      return NULL;
   }
#else
   /* The mipmap tree pitch is aligned to 64 bytes to make sure render
    * to texture works, but we don't need that for texturing from a
    * pixmap.  Just override it here. */
   mt->pitch = region->pitch;
#endif

   mt->region = region;

   return mt;
 }

/**
 * intel_miptree_pitch_align:
 *
 * @intel: intel context pointer
 *
 * @mt: the miptree to compute pitch alignment for
 *
 * @pitch: the natural pitch value
 *
 * Given @pitch, compute a larger value which accounts for
 * any necessary alignment required by the device
 */

int intel_miptree_pitch_align (struct intel_context *intel,
			       struct intel_mipmap_tree *mt,
			       int pitch)
{
#ifdef I915
   GLcontext *ctx = &intel->ctx;
#endif

   if (!mt->compressed) {
      int pitch_align;

      if (intel->ttm) {
	 /* XXX: Align pitch to multiple of 64 bytes for now to allow
	  * render-to-texture to work in all cases. This should probably be
	  * replaced at some point by some scheme to only do this when really
	  * necessary.
	  */
	 pitch_align = 64;
      } else {
	 pitch_align = 4;
      }

      pitch = ALIGN(pitch * mt->cpp, pitch_align);

#ifdef I915
      /* XXX: At least the i915 seems very upset when the pitch is a multiple
       * of 1024 and sometimes 512 bytes - performance can drop by several
       * times. Go to the next multiple of the required alignment for now.
       */
      if (!(pitch & 511) && 
	 (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
	 pitch += pitch_align;
#endif

      pitch /= mt->cpp;
   }
   return pitch;
}

void
intel_miptree_reference(struct intel_mipmap_tree **dst,
                        struct intel_mipmap_tree *src)
{
   src->refcount++;
   *dst = src;
   DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
}

void
intel_miptree_release(struct intel_context *intel,
                      struct intel_mipmap_tree **mt)
{
   if (!*mt)
      return;

   DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
   if (--(*mt)->refcount <= 0) {
      GLuint i;

      DBG("%s deleting %p\n", __FUNCTION__, *mt);

      intel_region_release(&((*mt)->region));

      for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
         if ((*mt)->level[i].image_offset)
            free((*mt)->level[i].image_offset);

      free(*mt);
   }
   *mt = NULL;
}




/* Can the image be pulled into a unified mipmap tree.  This mirrors
 * the completeness test in a lot of ways.
 *
 * Not sure whether I want to pass gl_texture_image here.
 */
GLboolean
intel_miptree_match_image(struct intel_mipmap_tree *mt,
                          struct gl_texture_image *image,
                          GLuint face, GLuint level)
{
   /* Images with borders are never pulled into mipmap trees. 
    */
   if (image->Border ||
       ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
        ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
         (image->TexObject->WrapT == GL_CLAMP_TO_BORDER)))) 
      return GL_FALSE;

   if (image->InternalFormat != mt->internal_format ||
       image->IsCompressed != mt->compressed)
      return GL_FALSE;

   if (!image->IsCompressed &&
       !mt->compressed &&
       image->TexFormat->TexelBytes != mt->cpp)
      return GL_FALSE;

   /* Test image dimensions against the base level image adjusted for
    * minification.  This will also catch images not present in the
    * tree, changed targets, etc.
    */
   if (image->Width != mt->level[level].width ||
       image->Height != mt->level[level].height ||
       image->Depth != mt->level[level].depth)
      return GL_FALSE;

   return GL_TRUE;
}


void
intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
			     GLuint level,
			     GLuint nr_images,
			     GLuint x, GLuint y,
			     GLuint w, GLuint h, GLuint d)
{
   mt->level[level].width = w;
   mt->level[level].height = h;
   mt->level[level].depth = d;
   mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
   mt->level[level].nr_images = nr_images;

   DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
       level, w, h, d, x, y, mt->level[level].level_offset);

   /* Not sure when this would happen, but anyway: 
    */
   if (mt->level[level].image_offset) {
      free(mt->level[level].image_offset);
      mt->level[level].image_offset = NULL;
   }

   assert(nr_images);

   mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
   mt->level[level].image_offset[0] = 0;
}



void
intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
			       GLuint level, GLuint img,
			       GLuint x, GLuint y)
{
   if (img == 0 && level == 0)
      assert(x == 0 && y == 0);

   assert(img < mt->level[level].nr_images);

   mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp;

   DBG("%s level %d img %d pos %d,%d image_offset %x\n",
       __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
}


/* 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 *
intel_miptree_depth_offsets(struct intel_mipmap_tree *mt, GLuint level)
{
   static const GLuint zero = 0;

   if (mt->target != GL_TEXTURE_3D || mt->level[level].nr_images == 1)
      return &zero;
   else
      return mt->level[level].image_offset;
}


GLuint
intel_miptree_image_offset(struct intel_mipmap_tree *mt,
			   GLuint face, GLuint level)
{
   if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
      return (mt->level[level].level_offset +
	      mt->level[level].image_offset[face]);
   else
      return mt->level[level].level_offset;
}



/**
 * Map a teximage in a mipmap tree.
 * \param row_stride  returns row stride in bytes
 * \param image_stride  returns image stride in bytes (for 3D textures).
 * \param image_offsets pointer to array of pixel offsets from the returned
 *	  pointer to each depth image
 * \return address of mapping
 */
GLubyte *
intel_miptree_image_map(struct intel_context * intel,
                        struct intel_mipmap_tree * mt,
                        GLuint face,
                        GLuint level,
                        GLuint * row_stride, GLuint * image_offsets)
{
   DBG("%s \n", __FUNCTION__);

   if (row_stride)
      *row_stride = mt->pitch * mt->cpp;

   if (mt->target == GL_TEXTURE_3D) {
      int i;

      for (i = 0; i < mt->level[level].depth; i++)
	 image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
   } else {
      assert(mt->level[level].depth == 1);
      assert(mt->target == GL_TEXTURE_CUBE_MAP ||
	     mt->level[level].image_offset[0] == 0);
      image_offsets[0] = 0;
   }

   return (intel_region_map(intel, mt->region) +
           intel_miptree_image_offset(mt, face, level));
}

void
intel_miptree_image_unmap(struct intel_context *intel,
                          struct intel_mipmap_tree *mt)
{
   DBG("%s\n", __FUNCTION__);
   intel_region_unmap(intel, mt->region);
}



/* Upload data for a particular image.
 */
void
intel_miptree_image_data(struct intel_context *intel,
			 struct intel_mipmap_tree *dst,
			 GLuint face,
			 GLuint level,
			 void *src,
			 GLuint src_row_pitch,
			 GLuint src_image_pitch)
{
   GLuint depth = dst->level[level].depth;
   GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
   const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
   GLuint i;
   GLuint height = 0;

   DBG("%s: %d/%d\n", __FUNCTION__, face, level);
   for (i = 0; i < depth; i++) {
      height = dst->level[level].height;
      if(dst->compressed)
	 height = (height + 3) / 4;
      intel_region_data(intel,
			dst->region,
			dst_offset + dst_depth_offset[i], /* dst_offset */
			0, 0,                             /* dstx, dsty */
			src,
			src_row_pitch,
			0, 0,                             /* source x, y */
			dst->level[level].width, height); /* width, height */

      src += src_image_pitch * dst->cpp;
   }
}

extern GLuint intel_compressed_alignment(GLenum);
/* Copy mipmap image between trees
 */
void
intel_miptree_image_copy(struct intel_context *intel,
                         struct intel_mipmap_tree *dst,
                         GLuint face, GLuint level,
                         struct intel_mipmap_tree *src)
{
   GLuint width = src->level[level].width;
   GLuint height = src->level[level].height;
   GLuint depth = src->level[level].depth;
   GLuint dst_offset = intel_miptree_image_offset(dst, face, level);
   GLuint src_offset = intel_miptree_image_offset(src, face, level);
   const GLuint *dst_depth_offset = intel_miptree_depth_offsets(dst, level);
   const GLuint *src_depth_offset = intel_miptree_depth_offsets(src, level);
   GLuint i;

   if (dst->compressed) {
       GLuint alignment = intel_compressed_alignment(dst->internal_format);
       height = (height + 3) / 4;
       width = ((width + alignment - 1) & ~(alignment - 1));
   }

   for (i = 0; i < depth; i++) {
      intel_region_copy(intel,
                        dst->region, dst_offset + dst_depth_offset[i],
                        0,
                        0,
                        src->region, src_offset + src_depth_offset[i],
                        0, 0, width, height);
   }

}