1
2#include "main/macros.h"
3#include "main/mtypes.h"
4#include "main/enums.h"
5#include "main/bufferobj.h"
6#include "main/context.h"
7#include "main/formats.h"
8#include "main/glformats.h"
9#include "main/image.h"
10#include "main/pbo.h"
11#include "main/renderbuffer.h"
12#include "main/texcompress.h"
13#include "main/texgetimage.h"
14#include "main/texobj.h"
15#include "main/teximage.h"
16#include "main/texstore.h"
17
18#include "drivers/common/meta.h"
19
20#include "intel_mipmap_tree.h"
21#include "intel_buffer_objects.h"
22#include "intel_batchbuffer.h"
23#include "intel_tex.h"
24#include "intel_blit.h"
25#include "intel_fbo.h"
26#include "intel_image.h"
27#include "intel_tiled_memcpy.h"
28#include "brw_context.h"
29
30#define FILE_DEBUG_FLAG DEBUG_TEXTURE
31
32/* Make sure one doesn't end up shrinking base level zero unnecessarily.
33 * Determining the base level dimension by shifting higher level dimension
34 * ends up in off-by-one value in case base level has NPOT size (for example,
35 * 293 != 146 << 1).
36 * Choose the original base level dimension when shifted dimensions agree.
37 * Otherwise assume real resize is intended and use the new shifted value.
38 */
39static unsigned
40get_base_dim(unsigned old_base_dim, unsigned new_level_dim, unsigned level)
41{
42   const unsigned old_level_dim = old_base_dim >> level;
43   const unsigned new_base_dim = new_level_dim << level;
44
45   return old_level_dim == new_level_dim ? old_base_dim : new_base_dim;
46}
47
48/* Work back from the specified level of the image to the baselevel and create a
49 * miptree of that size.
50 */
51struct intel_mipmap_tree *
52intel_miptree_create_for_teximage(struct brw_context *brw,
53				  struct intel_texture_object *intelObj,
54				  struct intel_texture_image *intelImage,
55                                  uint32_t layout_flags)
56{
57   GLuint lastLevel;
58   int width, height, depth;
59   const struct intel_mipmap_tree *old_mt = intelObj->mt;
60   const unsigned level = intelImage->base.Base.Level;
61
62   intel_get_image_dims(&intelImage->base.Base, &width, &height, &depth);
63
64   DBG("%s\n", __func__);
65
66   /* Figure out image dimensions at start level. */
67   switch(intelObj->base.Target) {
68   case GL_TEXTURE_2D_MULTISAMPLE:
69   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
70   case GL_TEXTURE_RECTANGLE:
71   case GL_TEXTURE_EXTERNAL_OES:
72      assert(level == 0);
73      break;
74   case GL_TEXTURE_3D:
75      depth = old_mt ? get_base_dim(old_mt->logical_depth0, depth, level) :
76                       depth << level;
77      /* Fall through */
78   case GL_TEXTURE_2D:
79   case GL_TEXTURE_2D_ARRAY:
80   case GL_TEXTURE_CUBE_MAP:
81   case GL_TEXTURE_CUBE_MAP_ARRAY:
82      height = old_mt ? get_base_dim(old_mt->logical_height0, height, level) :
83                        height << level;
84      /* Fall through */
85   case GL_TEXTURE_1D:
86   case GL_TEXTURE_1D_ARRAY:
87      width = old_mt ? get_base_dim(old_mt->logical_width0, width, level) :
88                       width << level;
89      break;
90   default:
91      unreachable("Unexpected target");
92   }
93
94   /* Guess a reasonable value for lastLevel.  This is probably going
95    * to be wrong fairly often and might mean that we have to look at
96    * resizable buffers, or require that buffers implement lazy
97    * pagetable arrangements.
98    */
99   if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
100        intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
101       intelImage->base.Base.Level == 0 &&
102       !intelObj->base.GenerateMipmap) {
103      lastLevel = 0;
104   } else {
105      lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
106                                               width, height, depth) - 1;
107   }
108
109   return intel_miptree_create(brw,
110			       intelObj->base.Target,
111			       intelImage->base.Base.TexFormat,
112			       0,
113			       lastLevel,
114			       width,
115			       height,
116			       depth,
117                               intelImage->base.Base.NumSamples,
118                               layout_flags | MIPTREE_LAYOUT_TILING_ANY);
119}
120
121static void
122intelTexImage(struct gl_context * ctx,
123              GLuint dims,
124              struct gl_texture_image *texImage,
125              GLenum format, GLenum type, const void *pixels,
126              const struct gl_pixelstore_attrib *unpack)
127{
128   struct intel_texture_image *intelImage = intel_texture_image(texImage);
129   bool ok;
130
131   bool tex_busy = intelImage->mt && drm_intel_bo_busy(intelImage->mt->bo);
132
133   DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
134       __func__, _mesa_get_format_name(texImage->TexFormat),
135       _mesa_enum_to_string(texImage->TexObject->Target),
136       _mesa_enum_to_string(format), _mesa_enum_to_string(type),
137       texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
138
139   /* Allocate storage for texture data. */
140   if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
141      _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
142      return;
143   }
144
145   assert(intelImage->mt);
146
147   if (intelImage->mt->format == MESA_FORMAT_S_UINT8)
148      intelImage->mt->r8stencil_needs_update = true;
149
150   ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage, 0, 0, 0,
151                                   texImage->Width, texImage->Height,
152                                   texImage->Depth,
153                                   format, type, pixels,
154                                   tex_busy, unpack);
155   if (ok)
156      return;
157
158   ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
159                                       0, 0, 0, /*x,y,z offsets*/
160                                       texImage->Width,
161                                       texImage->Height,
162                                       texImage->Depth,
163                                       format, type, pixels, unpack,
164                                       false /*allocate_storage*/);
165   if (ok)
166      return;
167
168   DBG("%s: upload image %dx%dx%d pixels %p\n",
169       __func__, texImage->Width, texImage->Height, texImage->Depth,
170       pixels);
171
172   _mesa_store_teximage(ctx, dims, texImage,
173                        format, type, pixels, unpack);
174}
175
176
177static void
178intel_set_texture_image_mt(struct brw_context *brw,
179                           struct gl_texture_image *image,
180                           GLenum internal_format,
181                           struct intel_mipmap_tree *mt)
182
183{
184   struct gl_texture_object *texobj = image->TexObject;
185   struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
186   struct intel_texture_image *intel_image = intel_texture_image(image);
187
188   _mesa_init_teximage_fields(&brw->ctx, image,
189			      mt->logical_width0, mt->logical_height0, 1,
190			      0, internal_format, mt->format);
191
192   brw->ctx.Driver.FreeTextureImageBuffer(&brw->ctx, image);
193
194   intel_texobj->needs_validate = true;
195   intel_image->base.RowStride = mt->pitch / mt->cpp;
196   assert(mt->pitch % mt->cpp == 0);
197
198   intel_miptree_reference(&intel_image->mt, mt);
199
200   /* Immediately validate the image to the object. */
201   intel_miptree_reference(&intel_texobj->mt, mt);
202}
203
204static struct intel_mipmap_tree *
205create_mt_for_planar_dri_image(struct brw_context *brw,
206                               GLenum target, __DRIimage *image)
207{
208   struct intel_image_format *f = image->planar_format;
209   struct intel_mipmap_tree *planar_mt;
210
211   for (int i = 0; i < f->nplanes; i++) {
212      const int index = f->planes[i].buffer_index;
213      const uint32_t dri_format = f->planes[i].dri_format;
214      const mesa_format format = driImageFormatToGLFormat(dri_format);
215      const uint32_t width = image->width >> f->planes[i].width_shift;
216      const uint32_t height = image->height >> f->planes[i].height_shift;
217
218      /* Disable creation of the texture's aux buffers because the driver
219       * exposes no EGL API to manage them. That is, there is no API for
220       * resolving the aux buffer's content to the main buffer nor for
221       * invalidating the aux buffer's content.
222       */
223      struct intel_mipmap_tree *mt =
224         intel_miptree_create_for_bo(brw, image->bo, format,
225                                     image->offsets[index],
226                                     width, height, 1,
227                                     image->strides[index],
228                                     MIPTREE_LAYOUT_DISABLE_AUX);
229      if (mt == NULL)
230         return NULL;
231
232      mt->target = target;
233      mt->total_width = width;
234      mt->total_height = height;
235
236      if (i == 0)
237         planar_mt = mt;
238      else
239         planar_mt->plane[i - 1] = mt;
240   }
241
242   return planar_mt;
243}
244
245/**
246 * Binds a BO to a texture image, as if it was uploaded by glTexImage2D().
247 *
248 * Used for GLX_EXT_texture_from_pixmap and EGL image extensions,
249 */
250static struct intel_mipmap_tree *
251create_mt_for_dri_image(struct brw_context *brw,
252                        GLenum target, __DRIimage *image)
253{
254   struct intel_mipmap_tree *mt;
255   uint32_t draw_x, draw_y;
256
257   /* Disable creation of the texture's aux buffers because the driver exposes
258    * no EGL API to manage them. That is, there is no API for resolving the aux
259    * buffer's content to the main buffer nor for invalidating the aux buffer's
260    * content.
261    */
262   mt = intel_miptree_create_for_bo(brw, image->bo, image->format,
263                                    0, image->width, image->height, 1,
264                                    image->pitch,
265                                    MIPTREE_LAYOUT_DISABLE_AUX);
266   if (mt == NULL)
267      return NULL;
268
269   mt->target = target;
270   mt->total_width = image->width;
271   mt->total_height = image->height;
272   mt->level[0].slice[0].x_offset = image->tile_x;
273   mt->level[0].slice[0].y_offset = image->tile_y;
274
275   intel_miptree_get_tile_offsets(mt, 0, 0, &draw_x, &draw_y);
276
277   /* From "OES_EGL_image" error reporting. We report GL_INVALID_OPERATION
278    * for EGL images from non-tile aligned sufaces in gen4 hw and earlier which has
279    * trouble resolving back to destination image due to alignment issues.
280    */
281   if (!brw->has_surface_tile_offset &&
282       (draw_x != 0 || draw_y != 0)) {
283      _mesa_error(&brw->ctx, GL_INVALID_OPERATION, __func__);
284      intel_miptree_release(&mt);
285      return NULL;
286   }
287
288   mt->offset = image->offset;
289
290   return mt;
291}
292
293void
294intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
295		   GLint texture_format,
296		   __DRIdrawable *dPriv)
297{
298   struct gl_framebuffer *fb = dPriv->driverPrivate;
299   struct brw_context *brw = pDRICtx->driverPrivate;
300   struct gl_context *ctx = &brw->ctx;
301   struct intel_renderbuffer *rb;
302   struct gl_texture_object *texObj;
303   struct gl_texture_image *texImage;
304   mesa_format texFormat = MESA_FORMAT_NONE;
305   struct intel_mipmap_tree *mt;
306   GLenum internal_format = 0;
307
308   texObj = _mesa_get_current_tex_object(ctx, target);
309
310   if (!texObj)
311      return;
312
313   if (dPriv->lastStamp != dPriv->dri2.stamp ||
314       !pDRICtx->driScreenPriv->dri2.useInvalidate)
315      intel_update_renderbuffers(pDRICtx, dPriv);
316
317   rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
318   /* If the miptree isn't set, then intel_update_renderbuffers was unable
319    * to get the BO for the drawable from the window system.
320    */
321   if (!rb || !rb->mt)
322      return;
323
324   if (rb->mt->cpp == 4) {
325      if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
326         internal_format = GL_RGB;
327         texFormat = MESA_FORMAT_B8G8R8X8_UNORM;
328      }
329      else {
330         internal_format = GL_RGBA;
331         texFormat = MESA_FORMAT_B8G8R8A8_UNORM;
332      }
333   } else if (rb->mt->cpp == 2) {
334      internal_format = GL_RGB;
335      texFormat = MESA_FORMAT_B5G6R5_UNORM;
336   }
337
338   intel_miptree_make_shareable(brw, rb->mt);
339   mt = intel_miptree_create_for_bo(brw, rb->mt->bo, texFormat, 0,
340                                    rb->Base.Base.Width,
341                                    rb->Base.Base.Height,
342                                    1, rb->mt->pitch, 0);
343   if (mt == NULL)
344       return;
345   mt->target = target;
346   mt->total_width = rb->Base.Base.Width;
347   mt->total_height = rb->Base.Base.Height;
348
349   _mesa_lock_texture(&brw->ctx, texObj);
350   texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
351   intel_set_texture_image_mt(brw, texImage, internal_format, mt);
352   intel_miptree_release(&mt);
353   _mesa_unlock_texture(&brw->ctx, texObj);
354}
355
356static GLboolean
357intel_bind_renderbuffer_tex_image(struct gl_context *ctx,
358                                  struct gl_renderbuffer *rb,
359                                  struct gl_texture_image *image)
360{
361   struct intel_renderbuffer *irb = intel_renderbuffer(rb);
362   struct intel_texture_image *intel_image = intel_texture_image(image);
363   struct gl_texture_object *texobj = image->TexObject;
364   struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
365
366   /* We can only handle RB allocated with AllocRenderbufferStorage, or
367    * window-system renderbuffers.
368    */
369   assert(!rb->TexImage);
370
371   if (!irb->mt)
372      return false;
373
374   _mesa_lock_texture(ctx, texobj);
375   _mesa_init_teximage_fields(ctx, image,
376			      rb->Width, rb->Height, 1,
377			      0, rb->InternalFormat, rb->Format);
378   image->NumSamples = rb->NumSamples;
379
380   intel_miptree_reference(&intel_image->mt, irb->mt);
381
382   /* Immediately validate the image to the object. */
383   intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
384
385   intel_texobj->needs_validate = true;
386   _mesa_unlock_texture(ctx, texobj);
387
388   return true;
389}
390
391void
392intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
393{
394   /* The old interface didn't have the format argument, so copy our
395    * implementation's behavior at the time.
396    */
397   intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
398}
399
400static void
401intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
402			      struct gl_texture_object *texObj,
403			      struct gl_texture_image *texImage,
404			      GLeglImageOES image_handle)
405{
406   struct brw_context *brw = brw_context(ctx);
407   struct intel_mipmap_tree *mt;
408   __DRIscreen *dri_screen = brw->screen->driScrnPriv;
409   __DRIimage *image;
410
411   image = dri_screen->dri2.image->lookupEGLImage(dri_screen, image_handle,
412                                                  dri_screen->loaderPrivate);
413   if (image == NULL)
414      return;
415
416   /* We support external textures only for EGLImages created with
417    * EGL_EXT_image_dma_buf_import. We may lift that restriction in the future.
418    */
419   if (target == GL_TEXTURE_EXTERNAL_OES && !image->dma_buf_imported) {
420      _mesa_error(ctx, GL_INVALID_OPERATION,
421            "glEGLImageTargetTexture2DOES(external target is enabled only "
422               "for images created with EGL_EXT_image_dma_buf_import");
423      return;
424   }
425
426   /* Disallow depth/stencil textures: we don't have a way to pass the
427    * separate stencil miptree of a GL_DEPTH_STENCIL texture through.
428    */
429   if (image->has_depthstencil) {
430      _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
431      return;
432   }
433
434   if (image->planar_format && image->planar_format->nplanes > 0)
435      mt = create_mt_for_planar_dri_image(brw, target, image);
436   else
437      mt = create_mt_for_dri_image(brw, target, image);
438   if (mt == NULL)
439      return;
440
441   struct intel_texture_object *intel_texobj = intel_texture_object(texObj);
442   intel_texobj->planar_format = image->planar_format;
443
444   const GLenum internal_format =
445      image->internal_format != 0 ?
446      image->internal_format : _mesa_get_format_base_format(mt->format);
447   intel_set_texture_image_mt(brw, texImage, internal_format, mt);
448   intel_miptree_release(&mt);
449}
450
451/**
452 * \brief A fast path for glGetTexImage.
453 *
454 * \see intel_readpixels_tiled_memcpy()
455 */
456bool
457intel_gettexsubimage_tiled_memcpy(struct gl_context *ctx,
458                                  struct gl_texture_image *texImage,
459                                  GLint xoffset, GLint yoffset,
460                                  GLsizei width, GLsizei height,
461                                  GLenum format, GLenum type,
462                                  GLvoid *pixels,
463                                  const struct gl_pixelstore_attrib *packing)
464{
465   struct brw_context *brw = brw_context(ctx);
466   struct intel_texture_image *image = intel_texture_image(texImage);
467   int dst_pitch;
468
469   /* The miptree's buffer. */
470   drm_intel_bo *bo;
471
472   int error = 0;
473
474   uint32_t cpp;
475   mem_copy_fn mem_copy = NULL;
476
477   /* This fastpath is restricted to specific texture types:
478    * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
479    * more types.
480    *
481    * FINISHME: The restrictions below on packing alignment and packing row
482    * length are likely unneeded now because we calculate the destination stride
483    * with _mesa_image_row_stride. However, before removing the restrictions
484    * we need tests.
485    */
486   if (!brw->has_llc ||
487       !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
488       !(texImage->TexObject->Target == GL_TEXTURE_2D ||
489         texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
490       pixels == NULL ||
491       _mesa_is_bufferobj(packing->BufferObj) ||
492       packing->Alignment > 4 ||
493       packing->SkipPixels > 0 ||
494       packing->SkipRows > 0 ||
495       (packing->RowLength != 0 && packing->RowLength != width) ||
496       packing->SwapBytes ||
497       packing->LsbFirst ||
498       packing->Invert)
499      return false;
500
501   /* We can't handle copying from RGBX or BGRX because the tiled_memcpy
502    * function doesn't set the last channel to 1. Note this checks BaseFormat
503    * rather than TexFormat in case the RGBX format is being simulated with an
504    * RGBA format.
505    */
506   if (texImage->_BaseFormat == GL_RGB)
507      return false;
508
509   if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
510      return false;
511
512   /* If this is a nontrivial texture view, let another path handle it instead. */
513   if (texImage->TexObject->MinLayer)
514      return false;
515
516   if (!image->mt ||
517       (image->mt->tiling != I915_TILING_X &&
518       image->mt->tiling != I915_TILING_Y)) {
519      /* The algorithm is written only for X- or Y-tiled memory. */
520      return false;
521   }
522
523   /* Since we are going to write raw data to the miptree, we need to resolve
524    * any pending fast color clears before we start.
525    */
526   intel_miptree_all_slices_resolve_color(brw, image->mt, 0);
527
528   bo = image->mt->bo;
529
530   if (drm_intel_bo_references(brw->batch.bo, bo)) {
531      perf_debug("Flushing before mapping a referenced bo.\n");
532      intel_batchbuffer_flush(brw);
533   }
534
535   error = brw_bo_map(brw, bo, false /* write enable */, "miptree");
536   if (error) {
537      DBG("%s: failed to map bo\n", __func__);
538      return false;
539   }
540
541   dst_pitch = _mesa_image_row_stride(packing, width, format, type);
542
543   DBG("%s: level=%d x,y=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
544       "mesa_format=0x%x tiling=%d "
545       "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d)\n",
546       __func__, texImage->Level, xoffset, yoffset, width, height,
547       format, type, texImage->TexFormat, image->mt->tiling,
548       packing->Alignment, packing->RowLength, packing->SkipPixels,
549       packing->SkipRows);
550
551   int level = texImage->Level + texImage->TexObject->MinLevel;
552
553   /* Adjust x and y offset based on miplevel */
554   xoffset += image->mt->level[level].level_x;
555   yoffset += image->mt->level[level].level_y;
556
557   tiled_to_linear(
558      xoffset * cpp, (xoffset + width) * cpp,
559      yoffset, yoffset + height,
560      pixels - (ptrdiff_t) yoffset * dst_pitch - (ptrdiff_t) xoffset * cpp,
561      bo->virtual,
562      dst_pitch, image->mt->pitch,
563      brw->has_swizzling,
564      image->mt->tiling,
565      mem_copy
566   );
567
568   drm_intel_bo_unmap(bo);
569   return true;
570}
571
572static void
573intel_get_tex_sub_image(struct gl_context *ctx,
574                        GLint xoffset, GLint yoffset, GLint zoffset,
575                        GLsizei width, GLsizei height, GLint depth,
576                        GLenum format, GLenum type, GLvoid *pixels,
577                        struct gl_texture_image *texImage)
578{
579   struct brw_context *brw = brw_context(ctx);
580   bool ok;
581
582   DBG("%s\n", __func__);
583
584   if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
585      if (_mesa_meta_pbo_GetTexSubImage(ctx, 3, texImage,
586                                        xoffset, yoffset, zoffset,
587                                        width, height, depth, format, type,
588                                        pixels, &ctx->Pack)) {
589         /* Flush to guarantee coherency between the render cache and other
590          * caches the PBO could potentially be bound to after this point.
591          * See the related comment in intelReadPixels() for a more detailed
592          * explanation.
593          */
594         brw_emit_mi_flush(brw);
595         return;
596      }
597
598      perf_debug("%s: fallback to CPU mapping in PBO case\n", __func__);
599   }
600
601   ok = intel_gettexsubimage_tiled_memcpy(ctx, texImage, xoffset, yoffset,
602                                          width, height,
603                                          format, type, pixels, &ctx->Pack);
604
605   if(ok)
606      return;
607
608   _mesa_meta_GetTexSubImage(ctx, xoffset, yoffset, zoffset,
609                             width, height, depth,
610                             format, type, pixels, texImage);
611
612   DBG("%s - DONE\n", __func__);
613}
614
615static void
616flush_astc_denorms(struct gl_context *ctx, GLuint dims,
617                   struct gl_texture_image *texImage,
618                   GLint xoffset, GLint yoffset, GLint zoffset,
619                   GLsizei width, GLsizei height, GLsizei depth)
620{
621   struct compressed_pixelstore store;
622   _mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
623                                       width, height, depth,
624                                       &ctx->Unpack, &store);
625
626   for (int slice = 0; slice < store.CopySlices; slice++) {
627
628      /* Map dest texture buffer */
629      GLubyte *dstMap;
630      GLint dstRowStride;
631      ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
632                                  xoffset, yoffset, width, height,
633                                  GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
634                                  &dstMap, &dstRowStride);
635      if (!dstMap)
636         continue;
637
638      for (int i = 0; i < store.CopyRowsPerSlice; i++) {
639
640         /* An ASTC block is stored in little endian mode. The byte that
641          * contains bits 0..7 is stored at the lower address in memory.
642          */
643         struct astc_void_extent {
644            uint16_t header : 12;
645            uint16_t dontcare[3];
646            uint16_t R;
647            uint16_t G;
648            uint16_t B;
649            uint16_t A;
650         } *blocks = (struct astc_void_extent*) dstMap;
651
652         /* Iterate over every copied block in the row */
653         for (int j = 0; j < store.CopyBytesPerRow / 16; j++) {
654
655            /* Check if the header matches that of an LDR void-extent block */
656            if (blocks[j].header == 0xDFC) {
657
658               /* Flush UNORM16 values that would be denormalized */
659               if (blocks[j].A < 4) blocks[j].A = 0;
660               if (blocks[j].B < 4) blocks[j].B = 0;
661               if (blocks[j].G < 4) blocks[j].G = 0;
662               if (blocks[j].R < 4) blocks[j].R = 0;
663            }
664         }
665
666         dstMap += dstRowStride;
667      }
668
669      ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
670   }
671}
672
673
674static void
675intelCompressedTexSubImage(struct gl_context *ctx, GLuint dims,
676                        struct gl_texture_image *texImage,
677                        GLint xoffset, GLint yoffset, GLint zoffset,
678                        GLsizei width, GLsizei height, GLsizei depth,
679                        GLenum format,
680                        GLsizei imageSize, const GLvoid *data)
681{
682   /* Upload the compressed data blocks */
683   _mesa_store_compressed_texsubimage(ctx, dims, texImage,
684                                      xoffset, yoffset, zoffset,
685                                      width, height, depth,
686                                      format, imageSize, data);
687
688   /* Fix up copied ASTC blocks if necessary */
689   GLenum gl_format = _mesa_compressed_format_to_glenum(ctx,
690                                                        texImage->TexFormat);
691   bool is_linear_astc = _mesa_is_astc_format(gl_format) &&
692                        !_mesa_is_srgb_format(gl_format);
693   struct brw_context *brw = (struct brw_context*) ctx;
694   if (brw->gen == 9 && is_linear_astc)
695      flush_astc_denorms(ctx, dims, texImage,
696                         xoffset, yoffset, zoffset,
697                         width, height, depth);
698}
699
700void
701intelInitTextureImageFuncs(struct dd_function_table *functions)
702{
703   functions->TexImage = intelTexImage;
704   functions->CompressedTexSubImage = intelCompressedTexSubImage;
705   functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
706   functions->BindRenderbufferTexImage = intel_bind_renderbuffer_tex_image;
707   functions->GetTexSubImage = intel_get_tex_sub_image;
708}
709