1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 #include "main/imports.h"
30 #include "main/mfeatures.h"
31 #include "main/mtypes.h"
32 #include "main/macros.h"
33 #include "main/bufferobj.h"
35 #include "intel_blit.h"
36 #include "intel_buffer_objects.h"
37 #include "intel_batchbuffer.h"
38 #include "intel_context.h"
39 #include "intel_fbo.h"
40 #include "intel_mipmap_tree.h"
41 #include "intel_regions.h"
44 intel_bufferobj_unmap(struct gl_context * ctx,
45 GLenum target, struct gl_buffer_object *obj);
47 /** Allocates a new drm_intel_bo to store the data for the buffer object. */
49 intel_bufferobj_alloc_buffer(struct intel_context *intel,
50 struct intel_buffer_object *intel_obj)
52 intel_obj->buffer = drm_intel_bo_alloc(intel->bufmgr, "bufferobj",
53 intel_obj->Base.Size, 64);
57 release_buffer(struct intel_buffer_object *intel_obj)
59 drm_intel_bo_unreference(intel_obj->buffer);
60 intel_obj->buffer = NULL;
61 intel_obj->offset = 0;
62 intel_obj->source = 0;
66 * There is some duplication between mesa's bufferobjects and our
67 * bufmgr buffers. Both have an integer handle and a hashtable to
68 * lookup an opaque structure. It would be nice if the handles and
69 * internal structure where somehow shared.
71 static struct gl_buffer_object *
72 intel_bufferobj_alloc(struct gl_context * ctx, GLuint name, GLenum target)
74 struct intel_buffer_object *obj = CALLOC_STRUCT(intel_buffer_object);
76 _mesa_initialize_buffer_object(&obj->Base, name, target);
83 /* Break the COW tie to the region. The region gets to keep the data.
86 intel_bufferobj_release_region(struct intel_context *intel,
87 struct intel_buffer_object *intel_obj)
89 assert(intel_obj->region->buffer == intel_obj->buffer);
90 intel_obj->region->pbo = NULL;
91 intel_obj->region = NULL;
93 release_buffer(intel_obj);
96 /* Break the COW tie to the region. Both the pbo and the region end
97 * up with a copy of the data.
100 intel_bufferobj_cow(struct intel_context *intel,
101 struct intel_buffer_object *intel_obj)
103 assert(intel_obj->region);
104 intel_region_cow(intel, intel_obj->region);
109 * Deallocate/free a vertex/pixel buffer object.
110 * Called via glDeleteBuffersARB().
113 intel_bufferobj_free(struct gl_context * ctx, struct gl_buffer_object *obj)
115 struct intel_context *intel = intel_context(ctx);
116 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
120 /* Buffer objects are automatically unmapped when deleting according
121 * to the spec, but Mesa doesn't do UnmapBuffer for us at context destroy
122 * (though it does if you call glDeleteBuffers)
125 intel_bufferobj_unmap(ctx, 0, obj);
127 free(intel_obj->sys_buffer);
128 if (intel_obj->region) {
129 intel_bufferobj_release_region(intel, intel_obj);
132 drm_intel_bo_unreference(intel_obj->buffer);
139 * Allocate space for and store data in a buffer object. Any data that was
140 * previously stored in the buffer object is lost. If data is NULL,
141 * memory will be allocated, but no copy will occur.
142 * Called via ctx->Driver.BufferData().
143 * \return GL_TRUE for success, GL_FALSE if out of memory
146 intel_bufferobj_data(struct gl_context * ctx,
150 GLenum usage, struct gl_buffer_object *obj)
152 struct intel_context *intel = intel_context(ctx);
153 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
155 intel_obj->Base.Size = size;
156 intel_obj->Base.Usage = usage;
158 assert(!obj->Pointer); /* Mesa should have unmapped it */
160 if (intel_obj->region)
161 intel_bufferobj_release_region(intel, intel_obj);
163 if (intel_obj->buffer != NULL)
164 release_buffer(intel_obj);
166 free(intel_obj->sys_buffer);
167 intel_obj->sys_buffer = NULL;
170 if (usage == GL_DYNAMIC_DRAW
172 /* On pre-965, stick VBOs in system memory, as we're always doing
173 * swtnl with their contents anyway.
175 || target == GL_ARRAY_BUFFER || target == GL_ELEMENT_ARRAY_BUFFER
179 intel_obj->sys_buffer = malloc(size);
180 if (intel_obj->sys_buffer != NULL) {
182 memcpy(intel_obj->sys_buffer, data, size);
186 intel_bufferobj_alloc_buffer(intel, intel_obj);
187 if (!intel_obj->buffer)
191 drm_intel_bo_subdata(intel_obj->buffer, 0, size, data);
199 * Replace data in a subrange of buffer object. If the data range
200 * specified by size + offset extends beyond the end of the buffer or
201 * if data is NULL, no copy is performed.
202 * Called via glBufferSubDataARB().
205 intel_bufferobj_subdata(struct gl_context * ctx,
209 const GLvoid * data, struct gl_buffer_object *obj)
211 struct intel_context *intel = intel_context(ctx);
212 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
220 if (intel_obj->region)
221 intel_bufferobj_cow(intel, intel_obj);
223 /* If we have a single copy in system memory, update that */
224 if (intel_obj->sys_buffer) {
225 if (intel_obj->source)
226 release_buffer(intel_obj);
228 if (intel_obj->buffer == NULL) {
229 memcpy((char *)intel_obj->sys_buffer + offset, data, size);
233 free(intel_obj->sys_buffer);
234 intel_obj->sys_buffer = NULL;
237 /* Otherwise we need to update the copy in video memory. */
239 drm_intel_bo_busy(intel_obj->buffer) ||
240 drm_intel_bo_references(intel->batch.bo, intel_obj->buffer);
242 /* replace the current busy bo with fresh data */
243 if (busy && size == intel_obj->Base.Size) {
244 drm_intel_bo_unreference(intel_obj->buffer);
245 intel_bufferobj_alloc_buffer(intel, intel_obj);
246 drm_intel_bo_subdata(intel_obj->buffer, 0, size, data);
247 } else if (intel->gen < 6) {
249 drm_intel_bo *temp_bo;
251 temp_bo = drm_intel_bo_alloc(intel->bufmgr, "subdata temp", size, 64);
253 drm_intel_bo_subdata(temp_bo, 0, size, data);
255 intel_emit_linear_blit(intel,
256 intel_obj->buffer, offset,
260 drm_intel_bo_unreference(temp_bo);
262 drm_intel_bo_subdata(intel_obj->buffer, offset, size, data);
265 /* Can't use the blit to modify the buffer in the middle of batch. */
266 if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer)) {
267 intel_batchbuffer_flush(intel);
269 drm_intel_bo_subdata(intel_obj->buffer, offset, size, data);
275 * Called via glGetBufferSubDataARB().
278 intel_bufferobj_get_subdata(struct gl_context * ctx,
282 GLvoid * data, struct gl_buffer_object *obj)
284 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
285 struct intel_context *intel = intel_context(ctx);
288 if (intel_obj->sys_buffer)
289 memcpy(data, (char *)intel_obj->sys_buffer + offset, size);
291 if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer)) {
292 intel_batchbuffer_flush(intel);
294 drm_intel_bo_get_subdata(intel_obj->buffer, offset, size, data);
301 * Called via glMapBufferARB().
304 intel_bufferobj_map(struct gl_context * ctx,
306 GLenum access, struct gl_buffer_object *obj)
308 struct intel_context *intel = intel_context(ctx);
309 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
310 GLboolean read_only = (access == GL_READ_ONLY_ARB);
311 GLboolean write_only = (access == GL_WRITE_ONLY_ARB);
315 if (intel_obj->sys_buffer) {
316 if (!read_only && intel_obj->source) {
317 release_buffer(intel_obj);
320 if (!intel_obj->buffer || intel_obj->source) {
321 obj->Pointer = intel_obj->sys_buffer;
322 obj->Length = obj->Size;
327 free(intel_obj->sys_buffer);
328 intel_obj->sys_buffer = NULL;
331 /* Flush any existing batchbuffer that might reference this data. */
332 if (drm_intel_bo_references(intel->batch.bo, intel_obj->buffer))
335 if (intel_obj->region)
336 intel_bufferobj_cow(intel, intel_obj);
338 if (intel_obj->buffer == NULL) {
344 drm_intel_gem_bo_map_gtt(intel_obj->buffer);
345 intel_obj->mapped_gtt = GL_TRUE;
347 drm_intel_bo_map(intel_obj->buffer, !read_only);
348 intel_obj->mapped_gtt = GL_FALSE;
351 obj->Pointer = intel_obj->buffer->virtual;
352 obj->Length = obj->Size;
359 * Called via glMapBufferRange().
361 * The goal of this extension is to allow apps to accumulate their rendering
362 * at the same time as they accumulate their buffer object. Without it,
363 * you'd end up blocking on execution of rendering every time you mapped
364 * the buffer to put new data in.
366 * We support it in 3 ways: If unsynchronized, then don't bother
367 * flushing the batchbuffer before mapping the buffer, which can save blocking
368 * in many cases. If we would still block, and they allow the whole buffer
369 * to be invalidated, then just allocate a new buffer to replace the old one.
370 * If not, and we'd block, and they allow the subrange of the buffer to be
371 * invalidated, then we can make a new little BO, let them write into that,
372 * and blit it into the real BO at unmap time.
375 intel_bufferobj_map_range(struct gl_context * ctx,
376 GLenum target, GLintptr offset, GLsizeiptr length,
377 GLbitfield access, struct gl_buffer_object *obj)
379 struct intel_context *intel = intel_context(ctx);
380 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
381 GLboolean read_only = (access == GL_READ_ONLY_ARB);
385 /* _mesa_MapBufferRange (GL entrypoint) sets these, but the vbo module also
386 * internally uses our functions directly.
388 obj->Offset = offset;
389 obj->Length = length;
390 obj->AccessFlags = access;
392 if (intel_obj->sys_buffer) {
393 if (!read_only && intel_obj->source)
394 release_buffer(intel_obj);
396 if (!intel_obj->buffer || intel_obj->source) {
397 obj->Pointer = intel_obj->sys_buffer + offset;
401 free(intel_obj->sys_buffer);
402 intel_obj->sys_buffer = NULL;
405 if (intel_obj->region)
406 intel_bufferobj_cow(intel, intel_obj);
408 /* If the mapping is synchronized with other GL operations, flush
409 * the batchbuffer so that GEM knows about the buffer access for later
412 if (!(access & GL_MAP_UNSYNCHRONIZED_BIT) &&
413 drm_intel_bo_references(intel->batch.bo, intel_obj->buffer))
416 if (intel_obj->buffer == NULL) {
421 /* If the user doesn't care about existing buffer contents and mapping
422 * would cause us to block, then throw out the old buffer.
424 if (!(access & GL_MAP_UNSYNCHRONIZED_BIT) &&
425 (access & GL_MAP_INVALIDATE_BUFFER_BIT) &&
426 drm_intel_bo_busy(intel_obj->buffer)) {
427 drm_intel_bo_unreference(intel_obj->buffer);
428 intel_bufferobj_alloc_buffer(intel, intel_obj);
431 /* If the user is mapping a range of an active buffer object but
432 * doesn't require the current contents of that range, make a new
433 * BO, and we'll copy what they put in there out at unmap or
436 if ((access & GL_MAP_INVALIDATE_RANGE_BIT) &&
437 drm_intel_bo_busy(intel_obj->buffer)) {
438 if (access & GL_MAP_FLUSH_EXPLICIT_BIT) {
439 intel_obj->range_map_buffer = malloc(length);
440 obj->Pointer = intel_obj->range_map_buffer;
442 intel_obj->range_map_bo = drm_intel_bo_alloc(intel->bufmgr,
445 if (!(access & GL_MAP_READ_BIT)) {
446 drm_intel_gem_bo_map_gtt(intel_obj->range_map_bo);
447 intel_obj->mapped_gtt = GL_TRUE;
449 drm_intel_bo_map(intel_obj->range_map_bo,
450 (access & GL_MAP_WRITE_BIT) != 0);
451 intel_obj->mapped_gtt = GL_FALSE;
453 obj->Pointer = intel_obj->range_map_bo->virtual;
458 if (!(access & GL_MAP_READ_BIT)) {
459 drm_intel_gem_bo_map_gtt(intel_obj->buffer);
460 intel_obj->mapped_gtt = GL_TRUE;
462 drm_intel_bo_map(intel_obj->buffer, (access & GL_MAP_WRITE_BIT) != 0);
463 intel_obj->mapped_gtt = GL_FALSE;
466 obj->Pointer = intel_obj->buffer->virtual + offset;
470 /* Ideally we'd use a BO to avoid taking up cache space for the temporary
471 * data, but FlushMappedBufferRange may be followed by further writes to
472 * the pointer, so we would have to re-map after emitting our blit, which
473 * would defeat the point.
476 intel_bufferobj_flush_mapped_range(struct gl_context *ctx, GLenum target,
477 GLintptr offset, GLsizeiptr length,
478 struct gl_buffer_object *obj)
480 struct intel_context *intel = intel_context(ctx);
481 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
482 drm_intel_bo *temp_bo;
484 /* Unless we're in the range map using a temporary system buffer,
485 * there's no work to do.
487 if (intel_obj->range_map_buffer == NULL)
493 temp_bo = drm_intel_bo_alloc(intel->bufmgr, "range map flush", length, 64);
495 drm_intel_bo_subdata(temp_bo, 0, length, intel_obj->range_map_buffer);
497 intel_emit_linear_blit(intel,
498 intel_obj->buffer, obj->Offset + offset,
502 drm_intel_bo_unreference(temp_bo);
507 * Called via glUnmapBuffer().
510 intel_bufferobj_unmap(struct gl_context * ctx,
511 GLenum target, struct gl_buffer_object *obj)
513 struct intel_context *intel = intel_context(ctx);
514 struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
517 assert(obj->Pointer);
518 if (intel_obj->sys_buffer != NULL) {
519 /* always keep the mapping around. */
520 } else if (intel_obj->range_map_buffer != NULL) {
521 /* Since we've emitted some blits to buffers that will (likely) be used
522 * in rendering operations in other cache domains in this batch, emit a
523 * flush. Once again, we wish for a domain tracker in libdrm to cover
524 * usage inside of a batchbuffer.
526 intel_batchbuffer_emit_mi_flush(intel);
527 free(intel_obj->range_map_buffer);
528 intel_obj->range_map_buffer = NULL;
529 } else if (intel_obj->range_map_bo != NULL) {
530 if (intel_obj->mapped_gtt) {
531 drm_intel_gem_bo_unmap_gtt(intel_obj->range_map_bo);
533 drm_intel_bo_unmap(intel_obj->range_map_bo);
536 intel_emit_linear_blit(intel,
537 intel_obj->buffer, obj->Offset,
538 intel_obj->range_map_bo, 0,
541 /* Since we've emitted some blits to buffers that will (likely) be used
542 * in rendering operations in other cache domains in this batch, emit a
543 * flush. Once again, we wish for a domain tracker in libdrm to cover
544 * usage inside of a batchbuffer.
546 intel_batchbuffer_emit_mi_flush(intel);
548 drm_intel_bo_unreference(intel_obj->range_map_bo);
549 intel_obj->range_map_bo = NULL;
550 } else if (intel_obj->buffer != NULL) {
551 if (intel_obj->mapped_gtt) {
552 drm_intel_gem_bo_unmap_gtt(intel_obj->buffer);
554 drm_intel_bo_unmap(intel_obj->buffer);
565 intel_bufferobj_buffer(struct intel_context *intel,
566 struct intel_buffer_object *intel_obj,
569 if (intel_obj->region) {
570 if (flag == INTEL_WRITE_PART)
571 intel_bufferobj_cow(intel, intel_obj);
572 else if (flag == INTEL_WRITE_FULL) {
573 intel_bufferobj_release_region(intel, intel_obj);
574 intel_bufferobj_alloc_buffer(intel, intel_obj);
578 if (intel_obj->source)
579 release_buffer(intel_obj);
581 if (intel_obj->buffer == NULL) {
582 intel_bufferobj_alloc_buffer(intel, intel_obj);
583 drm_intel_bo_subdata(intel_obj->buffer,
584 0, intel_obj->Base.Size,
585 intel_obj->sys_buffer);
587 free(intel_obj->sys_buffer);
588 intel_obj->sys_buffer = NULL;
589 intel_obj->offset = 0;
592 return intel_obj->buffer;
595 #define INTEL_UPLOAD_SIZE (64*1024)
598 intel_upload_finish(struct intel_context *intel)
600 if (!intel->upload.bo)
603 if (intel->upload.buffer_len) {
604 drm_intel_bo_subdata(intel->upload.bo,
605 intel->upload.buffer_offset,
606 intel->upload.buffer_len,
607 intel->upload.buffer);
608 intel->upload.buffer_len = 0;
611 drm_intel_bo_unreference(intel->upload.bo);
612 intel->upload.bo = NULL;
615 static void wrap_buffers(struct intel_context *intel, GLuint size)
617 intel_upload_finish(intel);
619 if (size < INTEL_UPLOAD_SIZE)
620 size = INTEL_UPLOAD_SIZE;
622 intel->upload.bo = drm_intel_bo_alloc(intel->bufmgr, "upload", size, 0);
623 intel->upload.offset = 0;
626 void intel_upload_data(struct intel_context *intel,
627 const void *ptr, GLuint size, GLuint align,
628 drm_intel_bo **return_bo,
629 GLuint *return_offset)
633 base = (intel->upload.offset + align - 1) / align * align;
634 if (intel->upload.bo == NULL || base + size > intel->upload.bo->size) {
635 wrap_buffers(intel, size);
639 drm_intel_bo_reference(intel->upload.bo);
640 *return_bo = intel->upload.bo;
641 *return_offset = base;
643 delta = base - intel->upload.offset;
644 if (intel->upload.buffer_len &&
645 intel->upload.buffer_len + delta + size > sizeof(intel->upload.buffer))
647 drm_intel_bo_subdata(intel->upload.bo,
648 intel->upload.buffer_offset,
649 intel->upload.buffer_len,
650 intel->upload.buffer);
651 intel->upload.buffer_len = 0;
654 if (size < sizeof(intel->upload.buffer))
656 if (intel->upload.buffer_len == 0)
657 intel->upload.buffer_offset = base;
659 intel->upload.buffer_len += delta;
661 memcpy(intel->upload.buffer + intel->upload.buffer_len, ptr, size);
662 intel->upload.buffer_len += size;
666 drm_intel_bo_subdata(intel->upload.bo, base, size, ptr);
669 intel->upload.offset = base + size;
672 void *intel_upload_map(struct intel_context *intel, GLuint size, GLuint align)
677 base = (intel->upload.offset + align - 1) / align * align;
678 if (intel->upload.bo == NULL || base + size > intel->upload.bo->size) {
679 wrap_buffers(intel, size);
683 delta = base - intel->upload.offset;
684 if (intel->upload.buffer_len &&
685 intel->upload.buffer_len + delta + size > sizeof(intel->upload.buffer))
687 drm_intel_bo_subdata(intel->upload.bo,
688 intel->upload.buffer_offset,
689 intel->upload.buffer_len,
690 intel->upload.buffer);
691 intel->upload.buffer_len = 0;
694 if (size <= sizeof(intel->upload.buffer)) {
695 if (intel->upload.buffer_len == 0)
696 intel->upload.buffer_offset = base;
698 intel->upload.buffer_len += delta;
700 ptr = intel->upload.buffer + intel->upload.buffer_len;
701 intel->upload.buffer_len += size;
708 void intel_upload_unmap(struct intel_context *intel,
709 const void *ptr, GLuint size, GLuint align,
710 drm_intel_bo **return_bo,
711 GLuint *return_offset)
715 base = (intel->upload.offset + align - 1) / align * align;
716 if (size > sizeof(intel->upload.buffer)) {
717 drm_intel_bo_subdata(intel->upload.bo, base, size, ptr);
721 drm_intel_bo_reference(intel->upload.bo);
722 *return_bo = intel->upload.bo;
723 *return_offset = base;
725 intel->upload.offset = base + size;
729 intel_bufferobj_source(struct intel_context *intel,
730 struct intel_buffer_object *intel_obj,
731 GLuint align, GLuint *offset)
733 if (intel_obj->buffer == NULL) {
734 intel_upload_data(intel,
735 intel_obj->sys_buffer, intel_obj->Base.Size, align,
736 &intel_obj->buffer, &intel_obj->offset);
737 intel_obj->source = 1;
740 *offset = intel_obj->offset;
741 return intel_obj->buffer;
745 intel_bufferobj_copy_subdata(struct gl_context *ctx,
746 struct gl_buffer_object *src,
747 struct gl_buffer_object *dst,
748 GLintptr read_offset, GLintptr write_offset,
751 struct intel_context *intel = intel_context(ctx);
752 struct intel_buffer_object *intel_src = intel_buffer_object(src);
753 struct intel_buffer_object *intel_dst = intel_buffer_object(dst);
754 drm_intel_bo *src_bo, *dst_bo;
760 /* If we're in system memory, just map and memcpy. */
761 if (intel_src->sys_buffer || intel_dst->sys_buffer || intel->gen >= 6) {
762 /* The same buffer may be used, but note that regions copied may
766 char *ptr = intel_bufferobj_map(ctx, GL_COPY_WRITE_BUFFER,
768 memmove(ptr + write_offset, ptr + read_offset, size);
769 intel_bufferobj_unmap(ctx, GL_COPY_WRITE_BUFFER, dst);
774 src_ptr = intel_bufferobj_map(ctx, GL_COPY_READ_BUFFER,
776 dst_ptr = intel_bufferobj_map(ctx, GL_COPY_WRITE_BUFFER,
779 memcpy(dst_ptr + write_offset, src_ptr + read_offset, size);
781 intel_bufferobj_unmap(ctx, GL_COPY_READ_BUFFER, src);
782 intel_bufferobj_unmap(ctx, GL_COPY_WRITE_BUFFER, dst);
787 /* Otherwise, we have real BOs, so blit them. */
789 dst_bo = intel_bufferobj_buffer(intel, intel_dst, INTEL_WRITE_PART);
790 src_bo = intel_bufferobj_source(intel, intel_src, 64, &src_offset);
792 intel_emit_linear_blit(intel,
793 dst_bo, write_offset,
794 src_bo, read_offset + src_offset, size);
796 /* Since we've emitted some blits to buffers that will (likely) be used
797 * in rendering operations in other cache domains in this batch, emit a
798 * flush. Once again, we wish for a domain tracker in libdrm to cover
799 * usage inside of a batchbuffer.
801 intel_batchbuffer_emit_mi_flush(intel);
804 #if FEATURE_APPLE_object_purgeable
806 intel_buffer_purgeable(struct gl_context * ctx,
807 drm_intel_bo *buffer,
813 retained = drm_intel_bo_madvise (buffer, I915_MADV_DONTNEED);
815 return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE;
819 intel_buffer_object_purgeable(struct gl_context * ctx,
820 struct gl_buffer_object *obj,
823 struct intel_buffer_object *intel;
825 intel = intel_buffer_object (obj);
826 if (intel->buffer != NULL)
827 return intel_buffer_purgeable (ctx, intel->buffer, option);
829 if (option == GL_RELEASED_APPLE) {
830 if (intel->sys_buffer != NULL) {
831 free(intel->sys_buffer);
832 intel->sys_buffer = NULL;
835 return GL_RELEASED_APPLE;
837 /* XXX Create the buffer and madvise(MADV_DONTNEED)? */
838 return intel_buffer_purgeable (ctx,
839 intel_bufferobj_buffer(intel_context(ctx),
846 intel_texture_object_purgeable(struct gl_context * ctx,
847 struct gl_texture_object *obj,
850 struct intel_texture_object *intel;
852 intel = intel_texture_object(obj);
853 if (intel->mt == NULL || intel->mt->region == NULL)
854 return GL_RELEASED_APPLE;
856 return intel_buffer_purgeable (ctx, intel->mt->region->buffer, option);
860 intel_render_object_purgeable(struct gl_context * ctx,
861 struct gl_renderbuffer *obj,
864 struct intel_renderbuffer *intel;
866 intel = intel_renderbuffer(obj);
867 if (intel->region == NULL)
868 return GL_RELEASED_APPLE;
870 return intel_buffer_purgeable (ctx, intel->region->buffer, option);
874 intel_buffer_unpurgeable(struct gl_context * ctx,
875 drm_intel_bo *buffer,
882 retained = drm_intel_bo_madvise (buffer, I915_MADV_WILLNEED);
884 return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
888 intel_buffer_object_unpurgeable(struct gl_context * ctx,
889 struct gl_buffer_object *obj,
892 return intel_buffer_unpurgeable (ctx, intel_buffer_object (obj)->buffer, option);
896 intel_texture_object_unpurgeable(struct gl_context * ctx,
897 struct gl_texture_object *obj,
900 struct intel_texture_object *intel;
902 intel = intel_texture_object(obj);
903 if (intel->mt == NULL || intel->mt->region == NULL)
904 return GL_UNDEFINED_APPLE;
906 return intel_buffer_unpurgeable (ctx, intel->mt->region->buffer, option);
910 intel_render_object_unpurgeable(struct gl_context * ctx,
911 struct gl_renderbuffer *obj,
914 struct intel_renderbuffer *intel;
916 intel = intel_renderbuffer(obj);
917 if (intel->region == NULL)
918 return GL_UNDEFINED_APPLE;
920 return intel_buffer_unpurgeable (ctx, intel->region->buffer, option);
925 intelInitBufferObjectFuncs(struct dd_function_table *functions)
927 functions->NewBufferObject = intel_bufferobj_alloc;
928 functions->DeleteBuffer = intel_bufferobj_free;
929 functions->BufferData = intel_bufferobj_data;
930 functions->BufferSubData = intel_bufferobj_subdata;
931 functions->GetBufferSubData = intel_bufferobj_get_subdata;
932 functions->MapBuffer = intel_bufferobj_map;
933 functions->MapBufferRange = intel_bufferobj_map_range;
934 functions->FlushMappedBufferRange = intel_bufferobj_flush_mapped_range;
935 functions->UnmapBuffer = intel_bufferobj_unmap;
936 functions->CopyBufferSubData = intel_bufferobj_copy_subdata;
938 #if FEATURE_APPLE_object_purgeable
939 functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
940 functions->TextureObjectPurgeable = intel_texture_object_purgeable;
941 functions->RenderObjectPurgeable = intel_render_object_purgeable;
943 functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
944 functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
945 functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;