intel_tex_image.c revision debf00e5fc3828f63e0f99d72c7fa6cd6ce012c5 
1
2#include "main/glheader.h"
3#include "main/macros.h"
4#include "main/mtypes.h"
5#include "main/enums.h"
6#include "main/bufferobj.h"
7#include "main/convolve.h"
8#include "main/context.h"
9#include "main/formats.h"
10#include "main/texcompress.h"
11#include "main/texstore.h"
12#include "main/texgetimage.h"
13#include "main/texobj.h"
14#include "main/texstore.h"
15#include "main/teximage.h"
16
17#include "intel_context.h"
18#include "intel_mipmap_tree.h"
19#include "intel_buffer_objects.h"
20#include "intel_batchbuffer.h"
21#include "intel_tex.h"
22#include "intel_blit.h"
23#include "intel_fbo.h"
24
25#define FILE_DEBUG_FLAG DEBUG_TEXTURE
26
27/* Functions to store texture images.  Where possible, mipmap_tree's
28 * will be created or further instantiated with image data, otherwise
29 * images will be stored in malloc'd memory.  A validation step is
30 * required to pull those images into a mipmap tree, or otherwise
31 * decide a fallback is required.
32 */
33
34
35static int
36logbase2(int n)
37{
38   GLint i = 1;
39   GLint log2 = 0;
40
41   while (n > i) {
42      i *= 2;
43      log2++;
44   }
45
46   return log2;
47}
48
49
50/* Otherwise, store it in memory if (Border != 0) or (any dimension ==
51 * 1).
52 *
53 * Otherwise, if max_level >= level >= min_level, create tree with
54 * space for textures from min_level down to max_level.
55 *
56 * Otherwise, create tree with space for textures from (level
57 * 0)..(1x1).  Consider pruning this tree at a validation if the
58 * saving is worth it.
59 */
60static void
61guess_and_alloc_mipmap_tree(struct intel_context *intel,
62                            struct intel_texture_object *intelObj,
63                            struct intel_texture_image *intelImage,
64			    GLboolean expect_accelerated_upload)
65{
66   GLuint firstLevel;
67   GLuint lastLevel;
68   GLuint width = intelImage->base.Width;
69   GLuint height = intelImage->base.Height;
70   GLuint depth = intelImage->base.Depth;
71   GLuint l2width, l2height, l2depth;
72   GLuint i, comp_byte = 0;
73   GLuint texelBytes;
74
75   DBG("%s\n", __FUNCTION__);
76
77   if (intelImage->base.Border ||
78       ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
79        ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
80         (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
81      return;
82
83   if (intelImage->level > intelObj->base.BaseLevel &&
84       (intelImage->base.Width == 1 ||
85        (intelObj->base.Target != GL_TEXTURE_1D &&
86         intelImage->base.Height == 1) ||
87        (intelObj->base.Target == GL_TEXTURE_3D &&
88         intelImage->base.Depth == 1)))
89      return;
90
91   /* If this image disrespects BaseLevel, allocate from level zero.
92    * Usually BaseLevel == 0, so it's unlikely to happen.
93    */
94   if (intelImage->level < intelObj->base.BaseLevel)
95      firstLevel = 0;
96   else
97      firstLevel = intelObj->base.BaseLevel;
98
99
100   /* Figure out image dimensions at start level.
101    */
102   for (i = intelImage->level; i > firstLevel; i--) {
103      width <<= 1;
104      if (height != 1)
105         height <<= 1;
106      if (depth != 1)
107         depth <<= 1;
108   }
109
110   /* Guess a reasonable value for lastLevel.  This is probably going
111    * to be wrong fairly often and might mean that we have to look at
112    * resizable buffers, or require that buffers implement lazy
113    * pagetable arrangements.
114    */
115   if ((intelObj->base.MinFilter == GL_NEAREST ||
116        intelObj->base.MinFilter == GL_LINEAR) &&
117       intelImage->level == firstLevel &&
118       (intel->gen < 4 || firstLevel == 0)) {
119      lastLevel = firstLevel;
120   }
121   else {
122      l2width = logbase2(width);
123      l2height = logbase2(height);
124      l2depth = logbase2(depth);
125      lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
126   }
127
128   assert(!intelObj->mt);
129   if (_mesa_is_format_compressed(intelImage->base.TexFormat))
130      comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat);
131
132   texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat);
133
134   intelObj->mt = intel_miptree_create(intel,
135                                       intelObj->base.Target,
136                                       intelImage->base._BaseFormat,
137                                       intelImage->base.InternalFormat,
138                                       firstLevel,
139                                       lastLevel,
140                                       width,
141                                       height,
142                                       depth,
143                                       texelBytes,
144                                       comp_byte,
145				       expect_accelerated_upload);
146
147   DBG("%s - success\n", __FUNCTION__);
148}
149
150
151
152
153static GLuint
154target_to_face(GLenum target)
155{
156   switch (target) {
157   case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
158   case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
159   case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
160   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
161   case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
162   case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
163      return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
164   default:
165      return 0;
166   }
167}
168
169/* There are actually quite a few combinations this will work for,
170 * more than what I've listed here.
171 */
172static GLboolean
173check_pbo_format(GLint internalFormat,
174                 GLenum format, GLenum type,
175                 gl_format mesa_format)
176{
177   switch (internalFormat) {
178   case 4:
179   case GL_RGBA:
180   case GL_RGBA8:
181      return (format == GL_BGRA &&
182              (type == GL_UNSIGNED_BYTE ||
183               type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
184              mesa_format == MESA_FORMAT_ARGB8888);
185   case 3:
186   case GL_RGB:
187      return (format == GL_RGB &&
188              type == GL_UNSIGNED_SHORT_5_6_5 &&
189              mesa_format == MESA_FORMAT_RGB565);
190   case 1:
191   case GL_LUMINANCE:
192      return (format == GL_LUMINANCE &&
193	      type == GL_UNSIGNED_BYTE &&
194	      mesa_format == MESA_FORMAT_L8);
195   case GL_YCBCR_MESA:
196      return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
197   default:
198      return GL_FALSE;
199   }
200}
201
202
203/* XXX: Do this for TexSubImage also:
204 */
205static GLboolean
206try_pbo_upload(struct intel_context *intel,
207               struct intel_texture_image *intelImage,
208               const struct gl_pixelstore_attrib *unpack,
209               GLint internalFormat,
210               GLint width, GLint height,
211               GLenum format, GLenum type, const void *pixels)
212{
213   struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
214   GLuint src_offset, src_stride;
215   GLuint dst_x, dst_y, dst_stride;
216   dri_bo *dst_buffer = intel_region_buffer(intel,
217					    intelImage->mt->region,
218					    INTEL_WRITE_FULL);
219
220   if (!_mesa_is_bufferobj(unpack->BufferObj) ||
221       intel->ctx._ImageTransferState ||
222       unpack->SkipPixels || unpack->SkipRows) {
223      DBG("%s: failure 1\n", __FUNCTION__);
224      return GL_FALSE;
225   }
226
227   /* note: potential 64-bit ptr to 32-bit int cast */
228   src_offset = (GLuint) (unsigned long) pixels;
229
230   if (unpack->RowLength > 0)
231      src_stride = unpack->RowLength;
232   else
233      src_stride = width;
234
235   intel_miptree_get_image_offset(intelImage->mt, intelImage->level,
236				  intelImage->face, 0,
237				  &dst_x, &dst_y);
238
239   dst_stride = intelImage->mt->pitch;
240
241   if (drm_intel_bo_references(intel->batch->buf, dst_buffer))
242      intelFlush(&intel->ctx);
243   {
244      dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
245
246      if (!intelEmitCopyBlit(intel,
247			     intelImage->mt->cpp,
248			     src_stride, src_buffer, src_offset, GL_FALSE,
249			     dst_stride, dst_buffer, 0,
250			     intelImage->mt->region->tiling,
251			     0, 0, dst_x, dst_y, width, height,
252			     GL_COPY)) {
253	 return GL_FALSE;
254      }
255   }
256
257   return GL_TRUE;
258}
259
260
261static GLboolean
262try_pbo_zcopy(struct intel_context *intel,
263              struct intel_texture_image *intelImage,
264              const struct gl_pixelstore_attrib *unpack,
265              GLint internalFormat,
266              GLint width, GLint height,
267              GLenum format, GLenum type, const void *pixels)
268{
269   struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
270   GLuint src_offset, src_stride;
271   GLuint dst_x, dst_y, dst_stride;
272
273   if (!_mesa_is_bufferobj(unpack->BufferObj) ||
274       intel->ctx._ImageTransferState ||
275       unpack->SkipPixels || unpack->SkipRows) {
276      DBG("%s: failure 1\n", __FUNCTION__);
277      return GL_FALSE;
278   }
279
280   /* note: potential 64-bit ptr to 32-bit int cast */
281   src_offset = (GLuint) (unsigned long) pixels;
282
283   if (unpack->RowLength > 0)
284      src_stride = unpack->RowLength;
285   else
286      src_stride = width;
287
288   intel_miptree_get_image_offset(intelImage->mt, intelImage->level,
289				  intelImage->face, 0,
290				  &dst_x, &dst_y);
291
292   dst_stride = intelImage->mt->pitch;
293
294   if (src_stride != dst_stride || dst_x != 0 || dst_y != 0 ||
295       src_offset != 0) {
296      DBG("%s: failure 2\n", __FUNCTION__);
297      return GL_FALSE;
298   }
299
300   intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
301
302   return GL_TRUE;
303}
304
305
306static void
307intelTexImage(GLcontext * ctx,
308              GLint dims,
309              GLenum target, GLint level,
310              GLint internalFormat,
311              GLint width, GLint height, GLint depth,
312              GLint border,
313              GLenum format, GLenum type, const void *pixels,
314              const struct gl_pixelstore_attrib *unpack,
315              struct gl_texture_object *texObj,
316              struct gl_texture_image *texImage, GLsizei imageSize,
317              GLboolean compressed)
318{
319   struct intel_context *intel = intel_context(ctx);
320   struct intel_texture_object *intelObj = intel_texture_object(texObj);
321   struct intel_texture_image *intelImage = intel_texture_image(texImage);
322   GLint postConvWidth = width;
323   GLint postConvHeight = height;
324   GLint texelBytes, sizeInBytes;
325   GLuint dstRowStride = 0, srcRowStride = texImage->RowStride;
326
327   DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
328       _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
329
330   intelImage->face = target_to_face(target);
331   intelImage->level = level;
332
333   if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
334      _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
335                                         &postConvHeight);
336   }
337
338   if (_mesa_is_format_compressed(texImage->TexFormat)) {
339      texelBytes = 0;
340   }
341   else {
342      texelBytes = _mesa_get_format_bytes(texImage->TexFormat);
343
344      /* Minimum pitch of 32 bytes */
345      if (postConvWidth * texelBytes < 32) {
346	 postConvWidth = 32 / texelBytes;
347	 texImage->RowStride = postConvWidth;
348      }
349
350      if (!intelImage->mt) {
351	  assert(texImage->RowStride == postConvWidth);
352      }
353   }
354
355   /* Release the reference to a potentially orphaned buffer.
356    * Release any old malloced memory.
357    */
358   if (intelImage->mt) {
359      intel_miptree_release(intel, &intelImage->mt);
360      assert(!texImage->Data);
361   }
362   else if (texImage->Data) {
363      _mesa_free_texmemory(texImage->Data);
364      texImage->Data = NULL;
365   }
366
367   /* If this is the only texture image in the tree, could call
368    * bmBufferData with NULL data to free the old block and avoid
369    * waiting on any outstanding fences.
370    */
371   if (intelObj->mt &&
372       intelObj->mt->first_level == level &&
373       intelObj->mt->last_level == level &&
374       intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
375       !intel_miptree_match_image(intelObj->mt, &intelImage->base)) {
376
377      DBG("release it\n");
378      intel_miptree_release(intel, &intelObj->mt);
379      assert(!intelObj->mt);
380   }
381
382   if (!intelObj->mt) {
383      guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
384      if (!intelObj->mt) {
385	 DBG("guess_and_alloc_mipmap_tree: failed\n");
386      }
387   }
388
389   assert(!intelImage->mt);
390
391   if (intelObj->mt &&
392       intel_miptree_match_image(intelObj->mt, &intelImage->base)) {
393
394      intel_miptree_reference(&intelImage->mt, intelObj->mt);
395      assert(intelImage->mt);
396   } else if (intelImage->base.Border == 0) {
397      int comp_byte = 0;
398      GLuint texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat);
399      GLenum baseFormat = _mesa_get_format_base_format(intelImage->base.TexFormat);
400      if (_mesa_is_format_compressed(intelImage->base.TexFormat)) {
401	 comp_byte =
402	    intel_compressed_num_bytes(intelImage->base.TexFormat);
403      }
404
405      /* Didn't fit in the object miptree, but it's suitable for inclusion in
406       * a miptree, so create one just for our level and store it in the image.
407       * It'll get moved into the object miptree at validate time.
408       */
409      intelImage->mt = intel_miptree_create(intel, target,
410					    baseFormat,
411					    internalFormat,
412					    level, level,
413					    width, height, depth,
414					    texelBytes,
415					    comp_byte, pixels == NULL);
416
417   }
418
419   /* PBO fastpaths:
420    */
421   if (dims <= 2 &&
422       intelImage->mt &&
423       _mesa_is_bufferobj(unpack->BufferObj) &&
424       check_pbo_format(internalFormat, format,
425                        type, intelImage->base.TexFormat)) {
426
427      DBG("trying pbo upload\n");
428
429      /* Attempt to texture directly from PBO data (zero copy upload).
430       *
431       * Currently disable as it can lead to worse as well as better
432       * performance (in particular when intel_region_cow() is
433       * required).
434       */
435      if (intelObj->mt == intelImage->mt &&
436          intelObj->mt->first_level == level &&
437          intelObj->mt->last_level == level) {
438
439         if (try_pbo_zcopy(intel, intelImage, unpack,
440                           internalFormat,
441                           width, height, format, type, pixels)) {
442
443            DBG("pbo zcopy upload succeeded\n");
444            return;
445         }
446      }
447
448
449      /* Otherwise, attempt to use the blitter for PBO image uploads.
450       */
451      if (try_pbo_upload(intel, intelImage, unpack,
452                         internalFormat,
453                         width, height, format, type, pixels)) {
454         DBG("pbo upload succeeded\n");
455         return;
456      }
457
458      DBG("pbo upload failed\n");
459   }
460
461   /* intelCopyTexImage calls this function with pixels == NULL, with
462    * the expectation that the mipmap tree will be set up but nothing
463    * more will be done.  This is where those calls return:
464    */
465   if (compressed) {
466      pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
467						      unpack,
468						      "glCompressedTexImage");
469   } else {
470      pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
471					   format, type,
472					   pixels, unpack, "glTexImage");
473   }
474
475   if (intelImage->mt) {
476      if (pixels != NULL) {
477	 /* Flush any queued rendering with the texture before mapping. */
478	 if (drm_intel_bo_references(intel->batch->buf,
479				     intelImage->mt->region->buffer)) {
480	    intelFlush(ctx);
481	 }
482         texImage->Data = intel_miptree_image_map(intel,
483                                                  intelImage->mt,
484                                                  intelImage->face,
485                                                  intelImage->level,
486                                                  &dstRowStride,
487                                                  intelImage->base.ImageOffsets);
488      }
489
490      texImage->RowStride = dstRowStride / intelImage->mt->cpp;
491   }
492   else {
493      /* Allocate regular memory and store the image there temporarily.   */
494      if (_mesa_is_format_compressed(texImage->TexFormat)) {
495         sizeInBytes = _mesa_format_image_size(texImage->TexFormat,
496                                               texImage->Width,
497                                               texImage->Height,
498                                               texImage->Depth);
499         dstRowStride =
500            _mesa_format_row_stride(texImage->TexFormat, width);
501         assert(dims != 3);
502      }
503      else {
504         dstRowStride = postConvWidth * texelBytes;
505         sizeInBytes = depth * dstRowStride * postConvHeight;
506      }
507
508      texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
509   }
510
511   DBG("Upload image %dx%dx%d row_len %d "
512       "pitch %d pixels %d compressed %d\n",
513       width, height, depth, width * texelBytes, dstRowStride,
514       pixels ? 1 : 0, compressed);
515
516   /* Copy data.  Would like to know when it's ok for us to eg. use
517    * the blitter to copy.  Or, use the hardware to do the format
518    * conversion and copy:
519    */
520   if (pixels) {
521       if (compressed) {
522	   if (intelImage->mt) {
523	       struct intel_region *dst = intelImage->mt->region;
524	       _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
525			       0, 0,
526			       intelImage->mt->level[level].width,
527			       (intelImage->mt->level[level].height+3)/4,
528			       pixels,
529			       srcRowStride,
530			       0, 0);
531	   }
532           else {
533	       memcpy(texImage->Data, pixels, imageSize);
534           }
535       }
536       else if (!_mesa_texstore(ctx, dims,
537                                texImage->_BaseFormat,
538                                texImage->TexFormat,
539                                texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
540                                dstRowStride,
541                                texImage->ImageOffsets,
542                                width, height, depth,
543                                format, type, pixels, unpack)) {
544          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
545       }
546   }
547
548   _mesa_unmap_teximage_pbo(ctx, unpack);
549
550   if (intelImage->mt) {
551      if (pixels != NULL)
552         intel_miptree_image_unmap(intel, intelImage->mt);
553      texImage->Data = NULL;
554   }
555}
556
557
558static void
559intelTexImage3D(GLcontext * ctx,
560                GLenum target, GLint level,
561                GLint internalFormat,
562                GLint width, GLint height, GLint depth,
563                GLint border,
564                GLenum format, GLenum type, const void *pixels,
565                const struct gl_pixelstore_attrib *unpack,
566                struct gl_texture_object *texObj,
567                struct gl_texture_image *texImage)
568{
569   intelTexImage(ctx, 3, target, level,
570                 internalFormat, width, height, depth, border,
571                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
572}
573
574
575static void
576intelTexImage2D(GLcontext * ctx,
577                GLenum target, GLint level,
578                GLint internalFormat,
579                GLint width, GLint height, GLint border,
580                GLenum format, GLenum type, const void *pixels,
581                const struct gl_pixelstore_attrib *unpack,
582                struct gl_texture_object *texObj,
583                struct gl_texture_image *texImage)
584{
585   intelTexImage(ctx, 2, target, level,
586                 internalFormat, width, height, 1, border,
587                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
588}
589
590
591static void
592intelTexImage1D(GLcontext * ctx,
593                GLenum target, GLint level,
594                GLint internalFormat,
595                GLint width, GLint border,
596                GLenum format, GLenum type, const void *pixels,
597                const struct gl_pixelstore_attrib *unpack,
598                struct gl_texture_object *texObj,
599                struct gl_texture_image *texImage)
600{
601   intelTexImage(ctx, 1, target, level,
602                 internalFormat, width, 1, 1, border,
603                 format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
604}
605
606
607static void
608intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
609                           GLint internalFormat,
610                           GLint width, GLint height, GLint border,
611                           GLsizei imageSize, const GLvoid *data,
612                           struct gl_texture_object *texObj,
613                           struct gl_texture_image *texImage )
614{
615   intelTexImage(ctx, 2, target, level,
616		 internalFormat, width, height, 1, border,
617		 0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
618}
619
620
621/**
622 * Need to map texture image into memory before copying image data,
623 * then unmap it.
624 */
625static void
626intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
627		    GLenum format, GLenum type, GLvoid * pixels,
628		    struct gl_texture_object *texObj,
629		    struct gl_texture_image *texImage, GLboolean compressed)
630{
631   struct intel_context *intel = intel_context(ctx);
632   struct intel_texture_image *intelImage = intel_texture_image(texImage);
633
634   /* If we're reading from a texture that has been rendered to, need to
635    * make sure rendering is complete.
636    * We could probably predicate this on texObj->_RenderToTexture
637    */
638   intelFlush(ctx);
639
640   /* Map */
641   if (intelImage->mt) {
642      /* Image is stored in hardware format in a buffer managed by the
643       * kernel.  Need to explicitly map and unmap it.
644       */
645      intelImage->base.Data =
646         intel_miptree_image_map(intel,
647                                 intelImage->mt,
648                                 intelImage->face,
649                                 intelImage->level,
650                                 &intelImage->base.RowStride,
651                                 intelImage->base.ImageOffsets);
652      intelImage->base.RowStride /= intelImage->mt->cpp;
653   }
654   else {
655      /* Otherwise, the image should actually be stored in
656       * intelImage->base.Data.  This is pretty confusing for
657       * everybody, I'd much prefer to separate the two functions of
658       * texImage->Data - storage for texture images in main memory
659       * and access (ie mappings) of images.  In other words, we'd
660       * create a new texImage->Map field and leave Data simply for
661       * storage.
662       */
663      assert(intelImage->base.Data);
664   }
665
666
667   if (compressed) {
668      _mesa_get_compressed_teximage(ctx, target, level, pixels,
669				    texObj, texImage);
670   }
671   else {
672      _mesa_get_teximage(ctx, target, level, format, type, pixels,
673                         texObj, texImage);
674   }
675
676
677   /* Unmap */
678   if (intelImage->mt) {
679      intel_miptree_image_unmap(intel, intelImage->mt);
680      intelImage->base.Data = NULL;
681   }
682}
683
684
685static void
686intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
687                 GLenum format, GLenum type, GLvoid * pixels,
688                 struct gl_texture_object *texObj,
689                 struct gl_texture_image *texImage)
690{
691   intel_get_tex_image(ctx, target, level, format, type, pixels,
692		       texObj, texImage, GL_FALSE);
693}
694
695
696static void
697intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
698			   GLvoid *pixels,
699			   struct gl_texture_object *texObj,
700			   struct gl_texture_image *texImage)
701{
702   intel_get_tex_image(ctx, target, level, 0, 0, pixels,
703		       texObj, texImage, GL_TRUE);
704}
705
706
707void
708intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
709		  unsigned long long offset, GLint depth, GLuint pitch)
710{
711   struct intel_context *intel = pDRICtx->driverPrivate;
712   struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
713   struct intel_texture_object *intelObj = intel_texture_object(tObj);
714
715   if (!intelObj)
716      return;
717
718   if (intelObj->mt)
719      intel_miptree_release(intel, &intelObj->mt);
720
721   intelObj->imageOverride = GL_TRUE;
722   intelObj->depthOverride = depth;
723   intelObj->pitchOverride = pitch;
724
725   if (offset)
726      intelObj->textureOffset = offset;
727}
728
729void
730intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
731		   GLint texture_format,
732		   __DRIdrawable *dPriv)
733{
734   struct gl_framebuffer *fb = dPriv->driverPrivate;
735   struct intel_context *intel = pDRICtx->driverPrivate;
736   GLcontext *ctx = &intel->ctx;
737   struct intel_texture_object *intelObj;
738   struct intel_texture_image *intelImage;
739   struct intel_mipmap_tree *mt;
740   struct intel_renderbuffer *rb;
741   struct gl_texture_object *texObj;
742   struct gl_texture_image *texImage;
743   int level = 0, internalFormat;
744
745   texObj = _mesa_get_current_tex_object(ctx, target);
746   intelObj = intel_texture_object(texObj);
747
748   if (!intelObj)
749      return;
750
751   if (!dPriv->validBuffers)
752      intel_update_renderbuffers(pDRICtx, dPriv);
753
754   rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
755   /* If the region isn't set, then intel_update_renderbuffers was unable
756    * to get the buffers for the drawable.
757    */
758   if (rb->region == NULL)
759      return;
760
761   if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
762      internalFormat = GL_RGB;
763   else
764      internalFormat = GL_RGBA;
765
766   mt = intel_miptree_create_for_region(intel, target,
767					internalFormat,
768					0, 0, rb->region, 1, 0);
769   if (mt == NULL)
770       return;
771
772   _mesa_lock_texture(&intel->ctx, texObj);
773
774   texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
775   intelImage = intel_texture_image(texImage);
776
777   if (intelImage->mt) {
778      intel_miptree_release(intel, &intelImage->mt);
779      assert(!texImage->Data);
780   }
781   if (intelObj->mt)
782      intel_miptree_release(intel, &intelObj->mt);
783
784   intelObj->mt = mt;
785   _mesa_init_teximage_fields(&intel->ctx, target, texImage,
786			      rb->region->width, rb->region->height, 1,
787			      0, internalFormat);
788
789   intelImage->face = target_to_face(target);
790   intelImage->level = level;
791   if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
792      texImage->TexFormat = MESA_FORMAT_XRGB8888;
793   else
794      texImage->TexFormat = MESA_FORMAT_ARGB8888;
795   texImage->RowStride = rb->region->pitch;
796   intel_miptree_reference(&intelImage->mt, intelObj->mt);
797
798   if (!intel_miptree_match_image(intelObj->mt, &intelImage->base)) {
799	   fprintf(stderr, "miptree doesn't match image\n");
800   }
801
802   _mesa_unlock_texture(&intel->ctx, texObj);
803}
804
805void
806intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
807{
808   /* The old interface didn't have the format argument, so copy our
809    * implementation's behavior at the time.
810    */
811   intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
812}
813
814
815void
816intelInitTextureImageFuncs(struct dd_function_table *functions)
817{
818   functions->TexImage1D = intelTexImage1D;
819   functions->TexImage2D = intelTexImage2D;
820   functions->TexImage3D = intelTexImage3D;
821   functions->GetTexImage = intelGetTexImage;
822
823   functions->CompressedTexImage2D = intelCompressedTexImage2D;
824   functions->GetCompressedTexImage = intelGetCompressedTexImage;
825}
826