intel_tex_image.c revision b38dbc51793b9007de147eff452d535410ef7c55 
1
2#include <stdlib.h>
3#include <stdio.h>
4
5#include "main/glheader.h"
6#include "main/macros.h"
7#include "main/mtypes.h"
8#include "main/enums.h"
9#include "main/colortab.h"
10#include "main/convolve.h"
11#include "main/context.h"
12#include "main/simple_list.h"
13#include "main/texcompress.h"
14#include "main/texformat.h"
15#include "main/texgetimage.h"
16#include "main/texobj.h"
17#include "main/texstore.h"
18#include "main/teximage.h"
19
20#include "intel_context.h"
21#include "intel_mipmap_tree.h"
22#include "intel_buffer_objects.h"
23#include "intel_batchbuffer.h"
24#include "intel_tex.h"
25#include "intel_blit.h"
26#include "intel_fbo.h"
27
28#define FILE_DEBUG_FLAG DEBUG_TEXTURE
29
30/* Functions to store texture images.  Where possible, mipmap_tree's
31 * will be created or further instantiated with image data, otherwise
32 * images will be stored in malloc'd memory.  A validation step is
33 * required to pull those images into a mipmap tree, or otherwise
34 * decide a fallback is required.
35 */
36
37
38static int
39logbase2(int n)
40{
41   GLint i = 1;
42   GLint log2 = 0;
43
44   while (n > i) {
45      i *= 2;
46      log2++;
47   }
48
49   return log2;
50}
51
52
53/* Otherwise, store it in memory if (Border != 0) or (any dimension ==
54 * 1).
55 *
56 * Otherwise, if max_level >= level >= min_level, create tree with
57 * space for textures from min_level down to max_level.
58 *
59 * Otherwise, create tree with space for textures from (level
60 * 0)..(1x1).  Consider pruning this tree at a validation if the
61 * saving is worth it.
62 */
63static void
64guess_and_alloc_mipmap_tree(struct intel_context *intel,
65                            struct intel_texture_object *intelObj,
66                            struct intel_texture_image *intelImage,
67			    GLboolean expect_accelerated_upload)
68{
69   GLuint firstLevel;
70   GLuint lastLevel;
71   GLuint width = intelImage->base.Width;
72   GLuint height = intelImage->base.Height;
73   GLuint depth = intelImage->base.Depth;
74   GLuint l2width, l2height, l2depth;
75   GLuint i, comp_byte = 0;
76
77   DBG("%s\n", __FUNCTION__);
78
79   if (intelImage->base.Border ||
80       ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
81        ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
82         (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
83      return;
84
85   if (intelImage->level > intelObj->base.BaseLevel &&
86       (intelImage->base.Width == 1 ||
87        (intelObj->base.Target != GL_TEXTURE_1D &&
88         intelImage->base.Height == 1) ||
89        (intelObj->base.Target == GL_TEXTURE_3D &&
90         intelImage->base.Depth == 1)))
91      return;
92
93   /* If this image disrespects BaseLevel, allocate from level zero.
94    * Usually BaseLevel == 0, so it's unlikely to happen.
95    */
96   if (intelImage->level < intelObj->base.BaseLevel)
97      firstLevel = 0;
98   else
99      firstLevel = intelObj->base.BaseLevel;
100
101
102   /* Figure out image dimensions at start level.
103    */
104   for (i = intelImage->level; i > firstLevel; i--) {
105      width <<= 1;
106      if (height != 1)
107         height <<= 1;
108      if (depth != 1)
109         depth <<= 1;
110   }
111
112   /* Guess a reasonable value for lastLevel.  This is probably going
113    * to be wrong fairly often and might mean that we have to look at
114    * resizable buffers, or require that buffers implement lazy
115    * pagetable arrangements.
116    */
117   if ((intelObj->base.MinFilter == GL_NEAREST ||
118        intelObj->base.MinFilter == GL_LINEAR) &&
119       intelImage->level == firstLevel) {
120      lastLevel = firstLevel;
121   }
122   else {
123      l2width = logbase2(width);
124      l2height = logbase2(height);
125      l2depth = logbase2(depth);
126      lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
127   }
128
129   assert(!intelObj->mt);
130   if (intelImage->base.IsCompressed)
131      comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
132   intelObj->mt = intel_miptree_create(intel,
133                                       intelObj->base.Target,
134                                       intelImage->base.InternalFormat,
135                                       firstLevel,
136                                       lastLevel,
137                                       width,
138                                       height,
139                                       depth,
140                                       intelImage->base.TexFormat->TexelBytes,
141                                       comp_byte,
142				       expect_accelerated_upload);
143
144   DBG("%s - success\n", __FUNCTION__);
145}
146
147
148
149
150static GLuint
151target_to_face(GLenum target)
152{
153   switch (target) {
154   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
155   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
156   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
157   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
158   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
159   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
160      return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
161   default:
162      return 0;
163   }
164}
165
166/* There are actually quite a few combinations this will work for,
167 * more than what I've listed here.
168 */
169static GLboolean
170check_pbo_format(GLint internalFormat,
171                 GLenum format, GLenum type,
172                 const struct gl_texture_format *mesa_format)
173{
174   switch (internalFormat) {
175   case 4:
176   case GL_RGBA:
177      return (format == GL_BGRA &&
178              (type == GL_UNSIGNED_BYTE ||
179               type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
180              mesa_format == &_mesa_texformat_argb8888);
181   case 3:
182   case GL_RGB:
183      return (format == GL_RGB &&
184              type == GL_UNSIGNED_SHORT_5_6_5 &&
185              mesa_format == &_mesa_texformat_rgb565);
186   case GL_YCBCR_MESA:
187      return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
188   default:
189      return GL_FALSE;
190   }
191}
192
193
194/* XXX: Do this for TexSubImage also:
195 */
196static GLboolean
197try_pbo_upload(struct intel_context *intel,
198               struct intel_texture_image *intelImage,
199               const struct gl_pixelstore_attrib *unpack,
200               GLint internalFormat,
201               GLint width, GLint height,
202               GLenum format, GLenum type, const void *pixels)
203{
204   struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
205   GLuint src_offset, src_stride;
206   GLuint dst_offset, dst_stride;
207
208   if (!pbo ||
209       intel->ctx._ImageTransferState ||
210       unpack->SkipPixels || unpack->SkipRows) {
211      DBG("%s: failure 1\n", __FUNCTION__);
212      return GL_FALSE;
213   }
214
215   /* note: potential 64-bit ptr to 32-bit int cast */
216   src_offset = (GLuint) (unsigned long) pixels;
217
218   if (unpack->RowLength > 0)
219      src_stride = unpack->RowLength;
220   else
221      src_stride = width;
222
223   dst_offset = intel_miptree_image_offset(intelImage->mt,
224                                           intelImage->face,
225                                           intelImage->level);
226
227   dst_stride = intelImage->mt->pitch;
228
229   intelFlush(&intel->ctx);
230   LOCK_HARDWARE(intel);
231   {
232      dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
233      dri_bo *dst_buffer = intel_region_buffer(intel,
234					       intelImage->mt->region,
235					       INTEL_WRITE_FULL);
236
237
238      intelEmitCopyBlit(intel,
239                        intelImage->mt->cpp,
240                        src_stride, src_buffer, src_offset, GL_FALSE,
241                        dst_stride, dst_buffer, dst_offset, GL_FALSE,
242                        0, 0, 0, 0, width, height,
243			GL_COPY);
244   }
245   UNLOCK_HARDWARE(intel);
246
247   return GL_TRUE;
248}
249
250
251static GLboolean
252try_pbo_zcopy(struct intel_context *intel,
253              struct intel_texture_image *intelImage,
254              const struct gl_pixelstore_attrib *unpack,
255              GLint internalFormat,
256              GLint width, GLint height,
257              GLenum format, GLenum type, const void *pixels)
258{
259   struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
260   GLuint src_offset, src_stride;
261   GLuint dst_offset, dst_stride;
262
263   if (!pbo ||
264       intel->ctx._ImageTransferState ||
265       unpack->SkipPixels || unpack->SkipRows) {
266      DBG("%s: failure 1\n", __FUNCTION__);
267      return GL_FALSE;
268   }
269
270   /* note: potential 64-bit ptr to 32-bit int cast */
271   src_offset = (GLuint) (unsigned long) pixels;
272
273   if (unpack->RowLength > 0)
274      src_stride = unpack->RowLength;
275   else
276      src_stride = width;
277
278   dst_offset = intel_miptree_image_offset(intelImage->mt,
279                                           intelImage->face,
280                                           intelImage->level);
281
282   dst_stride = intelImage->mt->pitch;
283
284   if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
285      DBG("%s: failure 2\n", __FUNCTION__);
286      return GL_FALSE;
287   }
288
289   intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
290
291   return GL_TRUE;
292}
293
294
295static void
296intelTexImage(GLcontext * ctx,
297              GLint dims,
298              GLenum target, GLint level,
299              GLint internalFormat,
300              GLint width, GLint height, GLint depth,
301              GLint border,
302              GLenum format, GLenum type, const void *pixels,
303              const struct gl_pixelstore_attrib *unpack,
304              struct gl_texture_object *texObj,
305              struct gl_texture_image *texImage, GLsizei imageSize,
306              GLboolean compressed)
307{
308   struct intel_context *intel = intel_context(ctx);
309   struct intel_texture_object *intelObj = intel_texture_object(texObj);
310   struct intel_texture_image *intelImage = intel_texture_image(texImage);
311   GLint postConvWidth = width;
312   GLint postConvHeight = height;
313   GLint texelBytes, sizeInBytes;
314   GLuint dstRowStride = 0, srcRowStride = texImage->RowStride;
315
316   DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
317       _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
318
319   intelFlush(ctx);
320
321   intelImage->face = target_to_face(target);
322   intelImage->level = level;
323
324   if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
325      _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
326                                         &postConvHeight);
327   }
328
329   /* choose the texture format */
330   texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
331                                                  format, type);
332
333   _mesa_set_fetch_functions(texImage, dims);
334
335   if (texImage->TexFormat->TexelBytes == 0) {
336      /* must be a compressed format */
337      texelBytes = 0;
338      texImage->IsCompressed = GL_TRUE;
339      texImage->CompressedSize =
340	 ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
341					   texImage->Height, texImage->Depth,
342					   texImage->TexFormat->MesaFormat);
343   } else {
344      texelBytes = texImage->TexFormat->TexelBytes;
345
346      /* Minimum pitch of 32 bytes */
347      if (postConvWidth * texelBytes < 32) {
348	 postConvWidth = 32 / texelBytes;
349	 texImage->RowStride = postConvWidth;
350      }
351
352      if (!intelImage->mt) {
353	  assert(texImage->RowStride == postConvWidth);
354      }
355   }
356
357   /* Release the reference to a potentially orphaned buffer.
358    * Release any old malloced memory.
359    */
360   if (intelImage->mt) {
361      intel_miptree_release(intel, &intelImage->mt);
362      assert(!texImage->Data);
363   }
364   else if (texImage->Data) {
365      _mesa_free_texmemory(texImage->Data);
366      texImage->Data = NULL;
367   }
368
369   /* If this is the only texture image in the tree, could call
370    * bmBufferData with NULL data to free the old block and avoid
371    * waiting on any outstanding fences.
372    */
373   if (intelObj->mt &&
374       intelObj->mt->first_level == level &&
375       intelObj->mt->last_level == level &&
376       intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
377       !intel_miptree_match_image(intelObj->mt, &intelImage->base,
378                                  intelImage->face, intelImage->level)) {
379
380      DBG("release it\n");
381      intel_miptree_release(intel, &intelObj->mt);
382      assert(!intelObj->mt);
383   }
384
385   if (!intelObj->mt) {
386      guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
387      if (!intelObj->mt) {
388	 DBG("guess_and_alloc_mipmap_tree: failed\n");
389      }
390   }
391
392   assert(!intelImage->mt);
393
394   if (intelObj->mt &&
395       intel_miptree_match_image(intelObj->mt, &intelImage->base,
396                                 intelImage->face, intelImage->level)) {
397
398      intel_miptree_reference(&intelImage->mt, intelObj->mt);
399      assert(intelImage->mt);
400   } else if (intelImage->base.Border == 0) {
401      int comp_byte = 0;
402
403      if (intelImage->base.IsCompressed) {
404	 comp_byte =
405	    intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
406      }
407
408      /* Didn't fit in the object miptree, but it's suitable for inclusion in
409       * a miptree, so create one just for our level and store it in the image.
410       * It'll get moved into the object miptree at validate time.
411       */
412      intelImage->mt = intel_miptree_create(intel, target, internalFormat,
413					    level, level,
414					    width, height, depth,
415					    intelImage->base.TexFormat->TexelBytes,
416					    comp_byte, pixels == NULL);
417
418   }
419
420   /* PBO fastpaths:
421    */
422   if (dims <= 2 &&
423       intelImage->mt &&
424       intel_buffer_object(unpack->BufferObj) &&
425       check_pbo_format(internalFormat, format,
426                        type, intelImage->base.TexFormat)) {
427
428      DBG("trying pbo upload\n");
429
430      /* Attempt to texture directly from PBO data (zero copy upload).
431       *
432       * Currently disable as it can lead to worse as well as better
433       * performance (in particular when intel_region_cow() is
434       * required).
435       */
436      if (intelObj->mt == intelImage->mt &&
437          intelObj->mt->first_level == level &&
438          intelObj->mt->last_level == level) {
439
440         if (try_pbo_zcopy(intel, intelImage, unpack,
441                           internalFormat,
442                           width, height, format, type, pixels)) {
443
444            DBG("pbo zcopy upload succeeded\n");
445            return;
446         }
447      }
448
449
450      /* Otherwise, attempt to use the blitter for PBO image uploads.
451       */
452      if (try_pbo_upload(intel, intelImage, unpack,
453                         internalFormat,
454                         width, height, format, type, pixels)) {
455         DBG("pbo upload succeeded\n");
456         return;
457      }
458
459      DBG("pbo upload failed\n");
460   }
461
462   /* intelCopyTexImage calls this function with pixels == NULL, with
463    * the expectation that the mipmap tree will be set up but nothing
464    * more will be done.  This is where those calls return:
465    */
466   if (compressed) {
467      pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
468						      unpack,
469						      "glCompressedTexImage");
470   } else {
471      pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
472					   format, type,
473					   pixels, unpack, "glTexImage");
474   }
475
476   LOCK_HARDWARE(intel);
477
478   if (intelImage->mt) {
479      if (pixels != NULL)
480         texImage->Data = intel_miptree_image_map(intel,
481                                                  intelImage->mt,
482                                                  intelImage->face,
483                                                  intelImage->level,
484                                                  &dstRowStride,
485                                                  intelImage->base.ImageOffsets);
486      texImage->RowStride = dstRowStride / intelImage->mt->cpp;
487   }
488   else {
489      /* Allocate regular memory and store the image there temporarily.   */
490      if (texImage->IsCompressed) {
491         sizeInBytes = texImage->CompressedSize;
492         dstRowStride =
493            _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
494         assert(dims != 3);
495      }
496      else {
497         dstRowStride = postConvWidth * texelBytes;
498         sizeInBytes = depth * dstRowStride * postConvHeight;
499      }
500
501      texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
502   }
503
504   DBG("Upload image %dx%dx%d row_len %d "
505       "pitch %d pixels %d compressed %d\n",
506       width, height, depth, width * texelBytes, dstRowStride,
507       pixels ? 1 : 0, compressed);
508
509   /* Copy data.  Would like to know when it's ok for us to eg. use
510    * the blitter to copy.  Or, use the hardware to do the format
511    * conversion and copy:
512    */
513   if (pixels) {
514       if (compressed) {
515	   if (intelImage->mt) {
516	       struct intel_region *dst = intelImage->mt->region;
517	       _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
518			       0, 0,
519			       intelImage->mt->level[level].width,
520			       (intelImage->mt->level[level].height+3)/4,
521			       pixels,
522			       srcRowStride,
523			       0, 0);
524	   } else
525	       memcpy(texImage->Data, pixels, imageSize);
526       } else if (!texImage->TexFormat->StoreImage(ctx, dims,
527						   texImage->_BaseFormat,
528						   texImage->TexFormat,
529						   texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
530						   dstRowStride,
531						   texImage->ImageOffsets,
532						   width, height, depth,
533						   format, type, pixels, unpack)) {
534	   _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
535       }
536   }
537
538   _mesa_unmap_teximage_pbo(ctx, unpack);
539
540   if (intelImage->mt) {
541      if (pixels != NULL)
542         intel_miptree_image_unmap(intel, intelImage->mt);
543      texImage->Data = NULL;
544   }
545
546   UNLOCK_HARDWARE(intel);
547
548   /* GL_SGIS_generate_mipmap */
549   if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
550      intel_generate_mipmap(ctx, target, texObj);
551   }
552}
553
554
555static void
556intelTexImage3D(GLcontext * ctx,
557                GLenum target, GLint level,
558                GLint internalFormat,
559                GLint width, GLint height, GLint depth,
560                GLint border,
561                GLenum format, GLenum type, const void *pixels,
562                const struct gl_pixelstore_attrib *unpack,
563                struct gl_texture_object *texObj,
564                struct gl_texture_image *texImage)
565{
566   intelTexImage(ctx, 3, target, level,
567                 internalFormat, width, height, depth, border,
568                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
569}
570
571
572static void
573intelTexImage2D(GLcontext * ctx,
574                GLenum target, GLint level,
575                GLint internalFormat,
576                GLint width, GLint height, GLint border,
577                GLenum format, GLenum type, const void *pixels,
578                const struct gl_pixelstore_attrib *unpack,
579                struct gl_texture_object *texObj,
580                struct gl_texture_image *texImage)
581{
582   intelTexImage(ctx, 2, target, level,
583                 internalFormat, width, height, 1, border,
584                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
585}
586
587
588static void
589intelTexImage1D(GLcontext * ctx,
590                GLenum target, GLint level,
591                GLint internalFormat,
592                GLint width, GLint border,
593                GLenum format, GLenum type, const void *pixels,
594                const struct gl_pixelstore_attrib *unpack,
595                struct gl_texture_object *texObj,
596                struct gl_texture_image *texImage)
597{
598   intelTexImage(ctx, 1, target, level,
599                 internalFormat, width, 1, 1, border,
600                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
601}
602
603
604static void
605intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
606                           GLint internalFormat,
607                           GLint width, GLint height, GLint border,
608                           GLsizei imageSize, const GLvoid *data,
609                           struct gl_texture_object *texObj,
610                           struct gl_texture_image *texImage )
611{
612   intelTexImage(ctx, 2, target, level,
613		 internalFormat, width, height, 1, border,
614		 0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
615}
616
617
618/**
619 * Need to map texture image into memory before copying image data,
620 * then unmap it.
621 */
622static void
623intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
624		    GLenum format, GLenum type, GLvoid * pixels,
625		    struct gl_texture_object *texObj,
626		    struct gl_texture_image *texImage, GLboolean compressed)
627{
628   struct intel_context *intel = intel_context(ctx);
629   struct intel_texture_image *intelImage = intel_texture_image(texImage);
630
631   /* Map */
632   if (intelImage->mt) {
633      /* Image is stored in hardware format in a buffer managed by the
634       * kernel.  Need to explicitly map and unmap it.
635       */
636      intelImage->base.Data =
637         intel_miptree_image_map(intel,
638                                 intelImage->mt,
639                                 intelImage->face,
640                                 intelImage->level,
641                                 &intelImage->base.RowStride,
642                                 intelImage->base.ImageOffsets);
643      intelImage->base.RowStride /= intelImage->mt->cpp;
644   }
645   else {
646      /* Otherwise, the image should actually be stored in
647       * intelImage->base.Data.  This is pretty confusing for
648       * everybody, I'd much prefer to separate the two functions of
649       * texImage->Data - storage for texture images in main memory
650       * and access (ie mappings) of images.  In other words, we'd
651       * create a new texImage->Map field and leave Data simply for
652       * storage.
653       */
654      assert(intelImage->base.Data);
655   }
656
657
658   if (compressed) {
659      _mesa_get_compressed_teximage(ctx, target, level, pixels,
660				    texObj, texImage);
661   } else {
662      _mesa_get_teximage(ctx, target, level, format, type, pixels,
663			 texObj, texImage);
664   }
665
666
667   /* Unmap */
668   if (intelImage->mt) {
669      intel_miptree_image_unmap(intel, intelImage->mt);
670      intelImage->base.Data = NULL;
671   }
672}
673
674
675static void
676intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
677                 GLenum format, GLenum type, GLvoid * pixels,
678                 struct gl_texture_object *texObj,
679                 struct gl_texture_image *texImage)
680{
681   intel_get_tex_image(ctx, target, level, format, type, pixels,
682		       texObj, texImage, GL_FALSE);
683}
684
685
686static void
687intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
688			   GLvoid *pixels,
689			   struct gl_texture_object *texObj,
690			   struct gl_texture_image *texImage)
691{
692   intel_get_tex_image(ctx, target, level, 0, 0, pixels,
693		       texObj, texImage, GL_TRUE);
694}
695
696
697void
698intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
699		  unsigned long long offset, GLint depth, GLuint pitch)
700{
701   struct intel_context *intel = pDRICtx->driverPrivate;
702   struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
703   struct intel_texture_object *intelObj = intel_texture_object(tObj);
704
705   if (!intelObj)
706      return;
707
708   if (intelObj->mt)
709      intel_miptree_release(intel, &intelObj->mt);
710
711   intelObj->imageOverride = GL_TRUE;
712   intelObj->depthOverride = depth;
713   intelObj->pitchOverride = pitch;
714
715   if (offset)
716      intelObj->textureOffset = offset;
717}
718
719void
720intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
721		   GLint glx_texture_format,
722		   __DRIdrawable *dPriv)
723{
724   struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
725   struct intel_context *intel = pDRICtx->driverPrivate;
726   struct intel_texture_object *intelObj;
727   struct intel_texture_image *intelImage;
728   struct intel_mipmap_tree *mt;
729   struct intel_renderbuffer *rb;
730   struct gl_texture_unit *texUnit;
731   struct gl_texture_object *texObj;
732   struct gl_texture_image *texImage;
733   int level = 0, type, format, internalFormat;
734
735   texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
736   texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
737   intelObj = intel_texture_object(texObj);
738
739   if (!intelObj)
740      return;
741
742   intel_update_renderbuffers(pDRICtx, dPriv);
743
744   rb = intel_fb->color_rb[0];
745   /* If the region isn't set, then intel_update_renderbuffers was unable
746    * to get the buffers for the drawable.
747    */
748   if (rb->region == NULL)
749      return;
750
751   type = GL_BGRA;
752   format = GL_UNSIGNED_BYTE;
753   if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
754      internalFormat = GL_RGB;
755   else
756      internalFormat = GL_RGBA;
757
758   mt = intel_miptree_create_for_region(intel, target,
759					internalFormat,
760					0, 0, rb->region, 1, 0);
761   if (mt == NULL)
762       return;
763
764   _mesa_lock_texture(&intel->ctx, texObj);
765
766   texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
767   intelImage = intel_texture_image(texImage);
768
769   if (intelImage->mt) {
770      intel_miptree_release(intel, &intelImage->mt);
771      assert(!texImage->Data);
772   }
773   if (intelObj->mt)
774      intel_miptree_release(intel, &intelObj->mt);
775
776   intelObj->mt = mt;
777   _mesa_init_teximage_fields(&intel->ctx, target, texImage,
778			      rb->region->width, rb->region->height, 1,
779			      0, internalFormat);
780
781   intelImage->face = target_to_face(target);
782   intelImage->level = level;
783   texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
784                                                  type, format);
785   _mesa_set_fetch_functions(texImage, 2);
786   texImage->RowStride = rb->region->pitch;
787   intel_miptree_reference(&intelImage->mt, intelObj->mt);
788
789   if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
790				  intelImage->face, intelImage->level)) {
791	   fprintf(stderr, "miptree doesn't match image\n");
792   }
793
794   _mesa_unlock_texture(&intel->ctx, texObj);
795}
796
797void
798intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
799{
800   /* The old interface didn't have the format argument, so copy our
801    * implementation's behavior at the time.
802    */
803   intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
804}
805
806
807void
808intelInitTextureImageFuncs(struct dd_function_table *functions)
809{
810   functions->TexImage1D = intelTexImage1D;
811   functions->TexImage2D = intelTexImage2D;
812   functions->TexImage3D = intelTexImage3D;
813   functions->GetTexImage = intelGetTexImage;
814
815   functions->CompressedTexImage2D = intelCompressedTexImage2D;
816   functions->GetCompressedTexImage = intelGetCompressedTexImage;
817}
818