intel_tex_image.c revision 86939e05d232d9b882f0b427b2efad9d754f463a 
1
2#include "main/glheader.h"
3#include "main/macros.h"
4#include "main/mfeatures.h"
5#include "main/mtypes.h"
6#include "main/enums.h"
7#include "main/bufferobj.h"
8#include "main/context.h"
9#include "main/formats.h"
10#include "main/pbo.h"
11#include "main/renderbuffer.h"
12#include "main/texcompress.h"
13#include "main/texstore.h"
14#include "main/texgetimage.h"
15#include "main/texobj.h"
16#include "main/teximage.h"
17
18#include "intel_context.h"
19#include "intel_mipmap_tree.h"
20#include "intel_buffer_objects.h"
21#include "intel_batchbuffer.h"
22#include "intel_tex.h"
23#include "intel_blit.h"
24#include "intel_fbo.h"
25#include "intel_span.h"
26
27#define FILE_DEBUG_FLAG DEBUG_TEXTURE
28
29/* Functions to store texture images.  Where possible, mipmap_tree's
30 * will be created or further instantiated with image data, otherwise
31 * images will be stored in malloc'd memory.  A validation step is
32 * required to pull those images into a mipmap tree, or otherwise
33 * decide a fallback is required.
34 */
35
36
37
38/* Otherwise, store it in memory if (Border != 0) or (any dimension ==
39 * 1).
40 *
41 * Otherwise, if max_level >= level >= min_level, create tree with
42 * space for textures from min_level down to max_level.
43 *
44 * Otherwise, create tree with space for textures from (level
45 * 0)..(1x1).  Consider pruning this tree at a validation if the
46 * saving is worth it.
47 */
48static struct intel_mipmap_tree *
49intel_miptree_create_for_teximage(struct intel_context *intel,
50				  struct intel_texture_object *intelObj,
51				  struct intel_texture_image *intelImage,
52				  GLboolean expect_accelerated_upload)
53{
54   GLuint firstLevel;
55   GLuint lastLevel;
56   GLuint width = intelImage->base.Base.Width;
57   GLuint height = intelImage->base.Base.Height;
58   GLuint depth = intelImage->base.Base.Depth;
59   GLuint i;
60
61   DBG("%s\n", __FUNCTION__);
62
63   if (intelImage->base.Base.Border)
64      return NULL;
65
66   if (intelImage->base.Base.Level > intelObj->base.BaseLevel &&
67       (intelImage->base.Base.Width == 1 ||
68        (intelObj->base.Target != GL_TEXTURE_1D &&
69         intelImage->base.Base.Height == 1) ||
70        (intelObj->base.Target == GL_TEXTURE_3D &&
71         intelImage->base.Base.Depth == 1))) {
72      /* For this combination, we're at some lower mipmap level and
73       * some important dimension is 1.  We can't extrapolate up to a
74       * likely base level width/height/depth for a full mipmap stack
75       * from this info, so just allocate this one level.
76       */
77      firstLevel = intelImage->base.Base.Level;
78      lastLevel = intelImage->base.Base.Level;
79   } else {
80      /* If this image disrespects BaseLevel, allocate from level zero.
81       * Usually BaseLevel == 0, so it's unlikely to happen.
82       */
83      if (intelImage->base.Base.Level < intelObj->base.BaseLevel)
84	 firstLevel = 0;
85      else
86	 firstLevel = intelObj->base.BaseLevel;
87
88      /* Figure out image dimensions at start level. */
89      for (i = intelImage->base.Base.Level; i > firstLevel; i--) {
90	 width <<= 1;
91	 if (height != 1)
92	    height <<= 1;
93	 if (depth != 1)
94	    depth <<= 1;
95      }
96
97      /* Guess a reasonable value for lastLevel.  This is probably going
98       * to be wrong fairly often and might mean that we have to look at
99       * resizable buffers, or require that buffers implement lazy
100       * pagetable arrangements.
101       */
102      if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
103	   intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
104	  intelImage->base.Base.Level == firstLevel &&
105	  (intel->gen < 4 || firstLevel == 0)) {
106	 lastLevel = firstLevel;
107      } else {
108	 lastLevel = firstLevel + _mesa_logbase2(MAX2(MAX2(width, height), depth));
109      }
110   }
111
112   return intel_miptree_create(intel,
113			       intelObj->base.Target,
114			       intelImage->base.Base.TexFormat,
115			       firstLevel,
116			       lastLevel,
117			       width,
118			       height,
119			       depth,
120			       expect_accelerated_upload);
121}
122
123/* There are actually quite a few combinations this will work for,
124 * more than what I've listed here.
125 */
126static bool
127check_pbo_format(GLenum format, GLenum type,
128                 gl_format mesa_format)
129{
130   switch (mesa_format) {
131   case MESA_FORMAT_ARGB8888:
132      return (format == GL_BGRA && (type == GL_UNSIGNED_BYTE ||
133				    type == GL_UNSIGNED_INT_8_8_8_8_REV));
134   case MESA_FORMAT_RGB565:
135      return (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5);
136   case MESA_FORMAT_L8:
137      return (format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE);
138   case MESA_FORMAT_YCBCR:
139      return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
140   default:
141      return false;
142   }
143}
144
145
146/* XXX: Do this for TexSubImage also:
147 */
148static bool
149try_pbo_upload(struct intel_context *intel,
150               struct intel_texture_image *intelImage,
151               const struct gl_pixelstore_attrib *unpack,
152	       GLenum format, GLenum type,
153               GLint width, GLint height, const void *pixels)
154{
155   struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
156   GLuint src_offset, src_stride;
157   GLuint dst_x, dst_y, dst_stride;
158   drm_intel_bo *dst_buffer, *src_buffer;
159
160   if (!_mesa_is_bufferobj(unpack->BufferObj))
161      return false;
162
163   DBG("trying pbo upload\n");
164
165   if (!intelImage->mt) {
166      DBG("%s: no miptree\n", __FUNCTION__);
167      return false;
168   }
169
170   if (intel->ctx._ImageTransferState ||
171       unpack->SkipPixels || unpack->SkipRows) {
172      DBG("%s: image transfer\n", __FUNCTION__);
173      return false;
174   }
175
176   if (!check_pbo_format(format, type, intelImage->base.Base.TexFormat)) {
177      DBG("%s: format mismatch (upload to %s with format 0x%x, type 0x%x)\n",
178	  __FUNCTION__, _mesa_get_format_name(intelImage->base.Base.TexFormat),
179	  format, type);
180      return false;
181   }
182
183   dst_buffer = intel_region_buffer(intel, intelImage->mt->region, INTEL_WRITE_FULL);
184   src_buffer = intel_bufferobj_source(intel, pbo, 64, &src_offset);
185   /* note: potential 64-bit ptr to 32-bit int cast */
186   src_offset += (GLuint) (unsigned long) pixels;
187
188   if (unpack->RowLength > 0)
189      src_stride = unpack->RowLength;
190   else
191      src_stride = width;
192
193   intel_miptree_get_image_offset(intelImage->mt, intelImage->base.Base.Level,
194				  intelImage->base.Base.Face, 0,
195				  &dst_x, &dst_y);
196
197   dst_stride = intelImage->mt->region->pitch;
198
199   if (!intelEmitCopyBlit(intel,
200			  intelImage->mt->cpp,
201			  src_stride, src_buffer,
202			  src_offset, GL_FALSE,
203			  dst_stride, dst_buffer, 0,
204			  intelImage->mt->region->tiling,
205			  0, 0, dst_x, dst_y, width, height,
206			  GL_COPY)) {
207      DBG("%s: blit failed\n", __FUNCTION__);
208      return false;
209   }
210
211   DBG("%s: success\n", __FUNCTION__);
212   return true;
213}
214
215/**
216 * \param scatter Scatter if true. Gather if false.
217 *
218 * \see intel_tex_image_x8z24_scatter
219 * \see intel_tex_image_x8z24_gather
220 */
221static void
222intel_tex_image_s8z24_scattergather(struct intel_context *intel,
223				    struct intel_texture_image *intel_image,
224				    bool scatter)
225{
226   struct gl_context *ctx = &intel->ctx;
227   struct gl_renderbuffer *depth_rb = intel_image->depth_rb;
228   struct gl_renderbuffer *stencil_rb = intel_image->stencil_rb;
229
230   int w = intel_image->base.Base.Width;
231   int h = intel_image->base.Base.Height;
232
233   uint32_t depth_row[w];
234   uint8_t stencil_row[w];
235
236   intel_renderbuffer_map(intel, depth_rb);
237   intel_renderbuffer_map(intel, stencil_rb);
238
239   if (scatter) {
240      for (int y = 0; y < h; ++y) {
241	 depth_rb->GetRow(ctx, depth_rb, w, 0, y, depth_row);
242	 for (int x = 0; x < w; ++x) {
243	    stencil_row[x] = depth_row[x] >> 24;
244	 }
245	 stencil_rb->PutRow(ctx, stencil_rb, w, 0, y, stencil_row, NULL);
246      }
247   } else { /* gather */
248      for (int y = 0; y < h; ++y) {
249	 depth_rb->GetRow(ctx, depth_rb, w, 0, y, depth_row);
250	 stencil_rb->GetRow(ctx, stencil_rb, w, 0, y, stencil_row);
251	 for (int x = 0; x < w; ++x) {
252	    uint32_t s8_x24 = stencil_row[x] << 24;
253	    uint32_t x8_z24 = depth_row[x] & 0x00ffffff;
254	    depth_row[x] = s8_x24 | x8_z24;
255	 }
256	 depth_rb->PutRow(ctx, depth_rb, w, 0, y, depth_row, NULL);
257      }
258   }
259
260   intel_renderbuffer_unmap(intel, depth_rb);
261   intel_renderbuffer_unmap(intel, stencil_rb);
262}
263
264/**
265 * Copy the x8 bits from intel_image->depth_rb to intel_image->stencil_rb.
266 */
267void
268intel_tex_image_s8z24_scatter(struct intel_context *intel,
269			      struct intel_texture_image *intel_image)
270{
271   intel_tex_image_s8z24_scattergather(intel, intel_image, true);
272}
273
274/**
275 * Copy the data in intel_image->stencil_rb to the x8 bits in
276 * intel_image->depth_rb.
277 */
278void
279intel_tex_image_s8z24_gather(struct intel_context *intel,
280			     struct intel_texture_image *intel_image)
281{
282   intel_tex_image_s8z24_scattergather(intel, intel_image, false);
283}
284
285static bool
286intel_tex_image_s8z24_create_renderbuffers(struct intel_context *intel,
287					   struct intel_texture_image *image)
288{
289   struct gl_context *ctx = &intel->ctx;
290
291   bool ok = true;
292   int width = image->base.Base.Width;
293   int height = image->base.Base.Height;
294   struct gl_renderbuffer *drb;
295   struct gl_renderbuffer *srb;
296   struct intel_renderbuffer *idrb;
297   struct intel_renderbuffer *isrb;
298
299   assert(intel->has_separate_stencil);
300   assert(image->base.Base.TexFormat == MESA_FORMAT_S8_Z24);
301   assert(image->mt != NULL);
302
303   drb = intel_create_wrapped_renderbuffer(ctx, width, height,
304					   MESA_FORMAT_X8_Z24);
305   srb = intel_create_wrapped_renderbuffer(ctx, width, height,
306					   MESA_FORMAT_S8);
307
308   if (!drb || !srb) {
309      if (drb) {
310	 drb->Delete(drb);
311      }
312      if (srb) {
313	 srb->Delete(srb);
314      }
315      return false;
316   }
317
318   idrb = intel_renderbuffer(drb);
319   isrb = intel_renderbuffer(srb);
320
321   intel_region_reference(&idrb->region, image->mt->region);
322   ok = intel_alloc_renderbuffer_storage(ctx, srb, GL_STENCIL_INDEX8,
323					 width, height);
324
325   if (!ok) {
326      drb->Delete(drb);
327      srb->Delete(srb);
328      return false;
329   }
330
331   intel_renderbuffer_set_draw_offset(idrb, image, 0);
332   intel_renderbuffer_set_draw_offset(isrb, image, 0);
333
334   _mesa_reference_renderbuffer(&image->depth_rb, drb);
335   _mesa_reference_renderbuffer(&image->stencil_rb, srb);
336
337   return true;
338}
339
340static void
341intelTexImage(struct gl_context * ctx,
342              GLint dims,
343              GLenum target, GLint level,
344              GLint internalFormat,
345              GLint width, GLint height, GLint depth,
346              GLint border,
347              GLenum format, GLenum type, const void *pixels,
348              const struct gl_pixelstore_attrib *unpack,
349              struct gl_texture_object *texObj,
350              struct gl_texture_image *texImage, GLsizei imageSize,
351              GLboolean compressed)
352{
353   struct intel_context *intel = intel_context(ctx);
354   struct intel_texture_object *intelObj = intel_texture_object(texObj);
355   struct intel_texture_image *intelImage = intel_texture_image(texImage);
356   GLint texelBytes, sizeInBytes;
357   GLuint dstRowStride = 0, srcRowStride = texImage->RowStride;
358
359   DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
360       _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
361
362   if (_mesa_is_format_compressed(texImage->TexFormat)) {
363      texelBytes = 0;
364   }
365   else {
366      texelBytes = _mesa_get_format_bytes(texImage->TexFormat);
367
368      if (!intelImage->mt) {
369	  assert(texImage->RowStride == width);
370      }
371   }
372
373   assert(!intelImage->mt);
374
375   if (intelObj->mt &&
376       intel_miptree_match_image(intelObj->mt, &intelImage->base.Base)) {
377      /* Use an existing miptree when possible */
378      intel_miptree_reference(&intelImage->mt, intelObj->mt);
379      assert(intelImage->mt);
380   } else if (intelImage->base.Base.Border == 0) {
381      /* Didn't fit in the object miptree, but it's suitable for inclusion in
382       * a miptree, so create one just for our level and store it in the image.
383       * It'll get moved into the object miptree at validate time.
384       */
385      intelImage->mt = intel_miptree_create_for_teximage(intel, intelObj,
386							 intelImage,
387							 pixels == NULL);
388
389      /* Even if the object currently has a mipmap tree associated
390       * with it, this one is a more likely candidate to represent the
391       * whole object since our level didn't fit what was there
392       * before, and any lower levels would fit into our miptree.
393       */
394      if (intelImage->mt) {
395	 intel_miptree_release(intel, &intelObj->mt);
396	 intel_miptree_reference(&intelObj->mt, intelImage->mt);
397      }
398   }
399
400   /* Attempt to use the blitter for PBO image uploads.
401    */
402   if (dims <= 2 &&
403       try_pbo_upload(intel, intelImage, unpack, format, type,
404		      width, height, pixels)) {
405      return;
406   }
407
408   /* intelCopyTexImage calls this function with pixels == NULL, with
409    * the expectation that the mipmap tree will be set up but nothing
410    * more will be done.  This is where those calls return:
411    */
412   if (compressed) {
413      pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
414						      unpack,
415						      "glCompressedTexImage");
416   } else {
417      pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
418					   format, type,
419					   pixels, unpack, "glTexImage");
420   }
421
422   if (intelImage->mt) {
423      if (pixels != NULL) {
424	 /* Flush any queued rendering with the texture before mapping. */
425	 if (drm_intel_bo_references(intel->batch.bo,
426				     intelImage->mt->region->buffer)) {
427	    intel_flush(ctx);
428	 }
429         texImage->Data = intel_miptree_image_map(intel,
430                                                  intelImage->mt,
431                                                  intelImage->base.Base.Face,
432                                                  intelImage->base.Base.Level,
433                                                  &dstRowStride,
434                                                  intelImage->base.Base.ImageOffsets);
435      }
436
437      texImage->RowStride = dstRowStride / intelImage->mt->cpp;
438   }
439   else {
440      /* Allocate regular memory and store the image there temporarily.   */
441      if (_mesa_is_format_compressed(texImage->TexFormat)) {
442         sizeInBytes = _mesa_format_image_size(texImage->TexFormat,
443                                               texImage->Width,
444                                               texImage->Height,
445                                               texImage->Depth);
446         dstRowStride =
447            _mesa_format_row_stride(texImage->TexFormat, width);
448         assert(dims != 3);
449      }
450      else {
451         dstRowStride = width * texelBytes;
452         sizeInBytes = depth * dstRowStride * height;
453      }
454
455      texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
456   }
457
458   DBG("Upload image %dx%dx%d row_len %d "
459       "pitch %d pixels %d compressed %d\n",
460       width, height, depth, width * texelBytes, dstRowStride,
461       pixels ? 1 : 0, compressed);
462
463   /* Copy data.  Would like to know when it's ok for us to eg. use
464    * the blitter to copy.  Or, use the hardware to do the format
465    * conversion and copy:
466    */
467   if (pixels) {
468       if (compressed) {
469	   if (intelImage->mt) {
470	       struct intel_region *dst = intelImage->mt->region;
471	       _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
472			       0, 0,
473			       intelImage->mt->level[level].width,
474			       (intelImage->mt->level[level].height+3)/4,
475			       pixels,
476			       srcRowStride,
477			       0, 0);
478	   }
479           else {
480	       memcpy(texImage->Data, pixels, imageSize);
481           }
482       }
483       else if (!_mesa_texstore(ctx, dims,
484                                texImage->_BaseFormat,
485                                texImage->TexFormat,
486                                texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
487                                dstRowStride,
488                                texImage->ImageOffsets,
489                                width, height, depth,
490                                format, type, pixels, unpack)) {
491          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
492       }
493   }
494
495   _mesa_unmap_teximage_pbo(ctx, unpack);
496
497   if (intel->must_use_separate_stencil
498       && texImage->TexFormat == MESA_FORMAT_S8_Z24) {
499      intel_tex_image_s8z24_create_renderbuffers(intel, intelImage);
500      intel_tex_image_s8z24_scatter(intel, intelImage);
501   }
502
503   if (intelImage->mt) {
504      if (pixels != NULL)
505         intel_miptree_image_unmap(intel, intelImage->mt);
506      texImage->Data = NULL;
507   }
508}
509
510
511static void
512intelTexImage3D(struct gl_context * ctx,
513                GLenum target, GLint level,
514                GLint internalFormat,
515                GLint width, GLint height, GLint depth,
516                GLint border,
517                GLenum format, GLenum type, const void *pixels,
518                const struct gl_pixelstore_attrib *unpack,
519                struct gl_texture_object *texObj,
520                struct gl_texture_image *texImage)
521{
522   intelTexImage(ctx, 3, target, level,
523                 internalFormat, width, height, depth, border,
524                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
525}
526
527
528static void
529intelTexImage2D(struct gl_context * ctx,
530                GLenum target, GLint level,
531                GLint internalFormat,
532                GLint width, GLint height, GLint border,
533                GLenum format, GLenum type, const void *pixels,
534                const struct gl_pixelstore_attrib *unpack,
535                struct gl_texture_object *texObj,
536                struct gl_texture_image *texImage)
537{
538   intelTexImage(ctx, 2, target, level,
539                 internalFormat, width, height, 1, border,
540                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
541}
542
543
544static void
545intelTexImage1D(struct gl_context * ctx,
546                GLenum target, GLint level,
547                GLint internalFormat,
548                GLint width, GLint border,
549                GLenum format, GLenum type, const void *pixels,
550                const struct gl_pixelstore_attrib *unpack,
551                struct gl_texture_object *texObj,
552                struct gl_texture_image *texImage)
553{
554   intelTexImage(ctx, 1, target, level,
555                 internalFormat, width, 1, 1, border,
556                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
557}
558
559
560static void
561intelCompressedTexImage2D( struct gl_context *ctx, GLenum target, GLint level,
562                           GLint internalFormat,
563                           GLint width, GLint height, GLint border,
564                           GLsizei imageSize, const GLvoid *data,
565                           struct gl_texture_object *texObj,
566                           struct gl_texture_image *texImage )
567{
568   intelTexImage(ctx, 2, target, level,
569		 internalFormat, width, height, 1, border,
570		 0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
571}
572
573
574/**
575 * Need to map texture image into memory before copying image data,
576 * then unmap it.
577 */
578static void
579intel_get_tex_image(struct gl_context * ctx, GLenum target, GLint level,
580		    GLenum format, GLenum type, GLvoid * pixels,
581		    struct gl_texture_object *texObj,
582		    struct gl_texture_image *texImage, GLboolean compressed)
583{
584   struct intel_context *intel = intel_context(ctx);
585   struct intel_texture_image *intelImage = intel_texture_image(texImage);
586
587   /* If we're reading from a texture that has been rendered to, need to
588    * make sure rendering is complete.
589    * We could probably predicate this on texObj->_RenderToTexture
590    */
591   intel_flush(ctx);
592
593   /* Map */
594   if (intelImage->mt) {
595      /* Image is stored in hardware format in a buffer managed by the
596       * kernel.  Need to explicitly map and unmap it.
597       */
598      intelImage->base.Base.Data =
599         intel_miptree_image_map(intel,
600                                 intelImage->mt,
601                                 intelImage->base.Base.Face,
602                                 intelImage->base.Base.Level,
603                                 &intelImage->base.Base.RowStride,
604                                 intelImage->base.Base.ImageOffsets);
605      intelImage->base.Base.RowStride /= intelImage->mt->cpp;
606   }
607   else {
608      /* Otherwise, the image should actually be stored in
609       * intelImage->base.Base.Data.  This is pretty confusing for
610       * everybody, I'd much prefer to separate the two functions of
611       * texImage->Data - storage for texture images in main memory
612       * and access (ie mappings) of images.  In other words, we'd
613       * create a new texImage->Map field and leave Data simply for
614       * storage.
615       */
616      assert(intelImage->base.Base.Data);
617   }
618
619   if (intelImage->stencil_rb) {
620      /*
621       * The texture has packed depth/stencil format, but uses separate
622       * stencil. The texture's embedded stencil buffer contains the real
623       * stencil data, so copy that into the miptree.
624       */
625      intel_tex_image_s8z24_gather(intel, intelImage);
626   }
627
628   if (compressed) {
629      _mesa_get_compressed_teximage(ctx, target, level, pixels,
630				    texObj, texImage);
631   }
632   else {
633      _mesa_get_teximage(ctx, target, level, format, type, pixels,
634                         texObj, texImage);
635   }
636
637
638   /* Unmap */
639   if (intelImage->mt) {
640      intel_miptree_image_unmap(intel, intelImage->mt);
641      intelImage->base.Base.Data = NULL;
642   }
643}
644
645
646static void
647intelGetTexImage(struct gl_context * ctx, GLenum target, GLint level,
648                 GLenum format, GLenum type, GLvoid * pixels,
649                 struct gl_texture_object *texObj,
650                 struct gl_texture_image *texImage)
651{
652   intel_get_tex_image(ctx, target, level, format, type, pixels,
653		       texObj, texImage, GL_FALSE);
654}
655
656
657static void
658intelGetCompressedTexImage(struct gl_context *ctx, GLenum target, GLint level,
659			   GLvoid *pixels,
660			   struct gl_texture_object *texObj,
661			   struct gl_texture_image *texImage)
662{
663   intel_get_tex_image(ctx, target, level, 0, 0, pixels,
664		       texObj, texImage, GL_TRUE);
665}
666
667void
668intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
669		   GLint texture_format,
670		   __DRIdrawable *dPriv)
671{
672   struct gl_framebuffer *fb = dPriv->driverPrivate;
673   struct intel_context *intel = pDRICtx->driverPrivate;
674   struct gl_context *ctx = &intel->ctx;
675   struct intel_texture_object *intelObj;
676   struct intel_texture_image *intelImage;
677   struct intel_mipmap_tree *mt;
678   struct intel_renderbuffer *rb;
679   struct gl_texture_object *texObj;
680   struct gl_texture_image *texImage;
681   int level = 0, internalFormat;
682   gl_format texFormat;
683
684   texObj = _mesa_get_current_tex_object(ctx, target);
685   intelObj = intel_texture_object(texObj);
686
687   if (!intelObj)
688      return;
689
690   if (dPriv->lastStamp != dPriv->dri2.stamp ||
691       !pDRICtx->driScreenPriv->dri2.useInvalidate)
692      intel_update_renderbuffers(pDRICtx, dPriv);
693
694   rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
695   /* If the region isn't set, then intel_update_renderbuffers was unable
696    * to get the buffers for the drawable.
697    */
698   if (rb->region == NULL)
699      return;
700
701   if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
702      internalFormat = GL_RGB;
703      texFormat = MESA_FORMAT_XRGB8888;
704   }
705   else {
706      internalFormat = GL_RGBA;
707      texFormat = MESA_FORMAT_ARGB8888;
708   }
709
710   mt = intel_miptree_create_for_region(intel, target, texFormat, rb->region);
711   if (mt == NULL)
712       return;
713
714   _mesa_lock_texture(&intel->ctx, texObj);
715
716   texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
717   intelImage = intel_texture_image(texImage);
718
719   if (intelImage->mt) {
720      intel_miptree_release(intel, &intelImage->mt);
721      assert(!texImage->Data);
722   }
723   if (intelObj->mt)
724      intel_miptree_release(intel, &intelObj->mt);
725
726   intelObj->mt = mt;
727
728   _mesa_init_teximage_fields(&intel->ctx, target, texImage,
729			      rb->region->width, rb->region->height, 1,
730			      0, internalFormat, texFormat);
731
732   texImage->RowStride = rb->region->pitch;
733   intel_miptree_reference(&intelImage->mt, intelObj->mt);
734
735   if (!intel_miptree_match_image(intelObj->mt, &intelImage->base.Base)) {
736	   fprintf(stderr, "miptree doesn't match image\n");
737   }
738
739   _mesa_unlock_texture(&intel->ctx, texObj);
740}
741
742void
743intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
744{
745   /* The old interface didn't have the format argument, so copy our
746    * implementation's behavior at the time.
747    */
748   intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
749}
750
751#if FEATURE_OES_EGL_image
752static void
753intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
754			      struct gl_texture_object *texObj,
755			      struct gl_texture_image *texImage,
756			      GLeglImageOES image_handle)
757{
758   struct intel_context *intel = intel_context(ctx);
759   struct intel_texture_object *intelObj = intel_texture_object(texObj);
760   struct intel_texture_image *intelImage = intel_texture_image(texImage);
761   struct intel_mipmap_tree *mt;
762   __DRIscreen *screen;
763   __DRIimage *image;
764
765   screen = intel->intelScreen->driScrnPriv;
766   image = screen->dri2.image->lookupEGLImage(screen, image_handle,
767					      screen->loaderPrivate);
768   if (image == NULL)
769      return;
770
771   mt = intel_miptree_create_for_region(intel, target, image->format,
772					image->region);
773   if (mt == NULL)
774       return;
775
776   if (intelImage->mt) {
777      intel_miptree_release(intel, &intelImage->mt);
778      assert(!texImage->Data);
779   }
780   if (intelObj->mt)
781      intel_miptree_release(intel, &intelObj->mt);
782
783   intelObj->mt = mt;
784   _mesa_init_teximage_fields(&intel->ctx, target, texImage,
785			      image->region->width, image->region->height, 1,
786			      0, image->internal_format, image->format);
787
788   texImage->RowStride = image->region->pitch;
789   intel_miptree_reference(&intelImage->mt, intelObj->mt);
790
791   if (!intel_miptree_match_image(intelObj->mt, &intelImage->base.Base))
792      fprintf(stderr, "miptree doesn't match image\n");
793}
794#endif
795
796void
797intelInitTextureImageFuncs(struct dd_function_table *functions)
798{
799   functions->TexImage1D = intelTexImage1D;
800   functions->TexImage2D = intelTexImage2D;
801   functions->TexImage3D = intelTexImage3D;
802   functions->GetTexImage = intelGetTexImage;
803
804   functions->CompressedTexImage2D = intelCompressedTexImage2D;
805   functions->GetCompressedTexImage = intelGetCompressedTexImage;
806
807#if FEATURE_OES_EGL_image
808   functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
809#endif
810}
811