2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
40 #include "bufferobj.h"
42 #include "mfeatures.h"
49 /*#define BOUNDS_CHECK*/
52 #if FEATURE_OES_mapbuffer
53 #define DEFAULT_ACCESS GL_MAP_WRITE_BIT
55 #define DEFAULT_ACCESS (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)
60 * Used as a placeholder for buffer objects between glGenBuffers() and
61 * glBindBuffer() so that glIsBuffer() can work correctly.
63 static struct gl_buffer_object DummyBufferObject
;
67 * Return pointer to address of a buffer object target.
68 * \param ctx the GL context
69 * \param target the buffer object target to be retrieved.
70 * \return pointer to pointer to the buffer object bound to \c target in the
71 * specified context or \c NULL if \c target is invalid.
73 static INLINE
struct gl_buffer_object
**
74 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
77 case GL_ARRAY_BUFFER_ARB
:
78 return &ctx
->Array
.ArrayBufferObj
;
79 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
80 return &ctx
->Array
.ElementArrayBufferObj
;
81 case GL_PIXEL_PACK_BUFFER_EXT
:
82 return &ctx
->Pack
.BufferObj
;
83 case GL_PIXEL_UNPACK_BUFFER_EXT
:
84 return &ctx
->Unpack
.BufferObj
;
85 case GL_COPY_READ_BUFFER
:
86 return &ctx
->CopyReadBuffer
;
87 case GL_COPY_WRITE_BUFFER
:
88 return &ctx
->CopyWriteBuffer
;
89 #if FEATURE_EXT_transform_feedback
90 case GL_TRANSFORM_FEEDBACK_BUFFER
:
91 if (ctx
->Extensions
.EXT_transform_feedback
) {
92 return &ctx
->TransformFeedback
.CurrentBuffer
;
104 * Get the buffer object bound to the specified target in a GL context.
105 * \param ctx the GL context
106 * \param target the buffer object target to be retrieved.
107 * \return pointer to the buffer object bound to \c target in the
108 * specified context or \c NULL if \c target is invalid.
110 static INLINE
struct gl_buffer_object
*
111 get_buffer(struct gl_context
*ctx
, GLenum target
)
113 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
121 * Convert a GLbitfield describing the mapped buffer access flags
122 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
125 simplified_access_mode(GLbitfield access
)
127 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
128 if ((access
& rwFlags
) == rwFlags
)
129 return GL_READ_WRITE
;
130 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
132 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
133 return GL_WRITE_ONLY
;
134 return GL_READ_WRITE
; /* this should never happen, but no big deal */
139 * Tests the subdata range parameters and sets the GL error code for
140 * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
142 * \param ctx GL context.
143 * \param target Buffer object target on which to operate.
144 * \param offset Offset of the first byte of the subdata range.
145 * \param size Size, in bytes, of the subdata range.
146 * \param caller Name of calling function for recording errors.
147 * \return A pointer to the buffer object bound to \c target in the
148 * specified context or \c NULL if any of the parameter or state
149 * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
152 * \sa glBufferSubDataARB, glGetBufferSubDataARB
154 static struct gl_buffer_object
*
155 buffer_object_subdata_range_good( struct gl_context
* ctx
, GLenum target
,
156 GLintptrARB offset
, GLsizeiptrARB size
,
159 struct gl_buffer_object
*bufObj
;
162 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
167 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
171 bufObj
= get_buffer(ctx
, target
);
173 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", caller
);
176 if (!_mesa_is_bufferobj(bufObj
)) {
177 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
180 if (offset
+ size
> bufObj
->Size
) {
181 _mesa_error(ctx
, GL_INVALID_VALUE
,
182 "%s(size + offset > buffer size)", caller
);
185 if (_mesa_bufferobj_mapped(bufObj
)) {
186 /* Buffer is currently mapped */
187 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
196 * Allocate and initialize a new buffer object.
198 * Default callback for the \c dd_function_table::NewBufferObject() hook.
200 static struct gl_buffer_object
*
201 _mesa_new_buffer_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
203 struct gl_buffer_object
*obj
;
207 obj
= MALLOC_STRUCT(gl_buffer_object
);
208 _mesa_initialize_buffer_object(obj
, name
, target
);
214 * Delete a buffer object.
216 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
219 _mesa_delete_buffer_object( struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
226 /* assign strange values here to help w/ debugging */
227 bufObj
->RefCount
= -1000;
230 _glthread_DESTROY_MUTEX(bufObj
->Mutex
);
237 * Set ptr to bufObj w/ reference counting.
240 _mesa_reference_buffer_object(struct gl_context
*ctx
,
241 struct gl_buffer_object
**ptr
,
242 struct gl_buffer_object
*bufObj
)
248 /* Unreference the old buffer */
249 GLboolean deleteFlag
= GL_FALSE
;
250 struct gl_buffer_object
*oldObj
= *ptr
;
252 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
253 ASSERT(oldObj
->RefCount
> 0);
256 printf("BufferObj %p %d DECR to %d\n",
257 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
259 deleteFlag
= (oldObj
->RefCount
== 0);
260 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
264 /* some sanity checking: don't delete a buffer still in use */
266 /* unfortunately, these tests are invalid during context tear-down */
267 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
268 ASSERT(ctx
->Array
.ElementArrayBufferObj
!= bufObj
);
269 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
272 ASSERT(ctx
->Driver
.DeleteBuffer
);
273 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
281 /* reference new buffer */
282 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
283 if (bufObj
->RefCount
== 0) {
284 /* this buffer's being deleted (look just above) */
285 /* Not sure this can every really happen. Warn if it does. */
286 _mesa_problem(NULL
, "referencing deleted buffer object");
292 printf("BufferObj %p %d INCR to %d\n",
293 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
297 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
303 * Initialize a buffer object to default values.
306 _mesa_initialize_buffer_object( struct gl_buffer_object
*obj
,
307 GLuint name
, GLenum target
)
311 memset(obj
, 0, sizeof(struct gl_buffer_object
));
312 _glthread_INIT_MUTEX(obj
->Mutex
);
315 obj
->Usage
= GL_STATIC_DRAW_ARB
;
316 obj
->AccessFlags
= DEFAULT_ACCESS
;
321 * Allocate space for and store data in a buffer object. Any data that was
322 * previously stored in the buffer object is lost. If \c data is \c NULL,
323 * memory will be allocated, but no copy will occur.
325 * This is the default callback for \c dd_function_table::BufferData()
326 * Note that all GL error checking will have been done already.
328 * \param ctx GL context.
329 * \param target Buffer object target on which to operate.
330 * \param size Size, in bytes, of the new data store.
331 * \param data Pointer to the data to store in the buffer object. This
332 * pointer may be \c NULL.
333 * \param usage Hints about how the data will be used.
334 * \param bufObj Object to be used.
336 * \return GL_TRUE for success, GL_FALSE for failure
337 * \sa glBufferDataARB, dd_function_table::BufferData.
340 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
341 const GLvoid
* data
, GLenum usage
,
342 struct gl_buffer_object
* bufObj
)
346 (void) ctx
; (void) target
;
348 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
350 bufObj
->Data
= (GLubyte
*) new_data
;
352 bufObj
->Usage
= usage
;
355 memcpy( bufObj
->Data
, data
, size
);
367 * Replace data in a subrange of buffer object. If the data range
368 * specified by \c size + \c offset extends beyond the end of the buffer or
369 * if \c data is \c NULL, no copy is performed.
371 * This is the default callback for \c dd_function_table::BufferSubData()
372 * Note that all GL error checking will have been done already.
374 * \param ctx GL context.
375 * \param target Buffer object target on which to operate.
376 * \param offset Offset of the first byte to be modified.
377 * \param size Size, in bytes, of the data range.
378 * \param data Pointer to the data to store in the buffer object.
379 * \param bufObj Object to be used.
381 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
384 _mesa_buffer_subdata( struct gl_context
*ctx
, GLenum target
, GLintptrARB offset
,
385 GLsizeiptrARB size
, const GLvoid
* data
,
386 struct gl_buffer_object
* bufObj
)
388 (void) ctx
; (void) target
;
390 /* this should have been caught in _mesa_BufferSubData() */
391 ASSERT(size
+ offset
<= bufObj
->Size
);
394 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
400 * Retrieve data from a subrange of buffer object. If the data range
401 * specified by \c size + \c offset extends beyond the end of the buffer or
402 * if \c data is \c NULL, no copy is performed.
404 * This is the default callback for \c dd_function_table::GetBufferSubData()
405 * Note that all GL error checking will have been done already.
407 * \param ctx GL context.
408 * \param target Buffer object target on which to operate.
409 * \param offset Offset of the first byte to be fetched.
410 * \param size Size, in bytes, of the data range.
411 * \param data Destination for data
412 * \param bufObj Object to be used.
414 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
417 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLenum target
, GLintptrARB offset
,
418 GLsizeiptrARB size
, GLvoid
* data
,
419 struct gl_buffer_object
* bufObj
)
421 (void) ctx
; (void) target
;
423 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
424 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
430 * Default callback for \c dd_function_tabel::MapBuffer().
432 * The function parameters will have been already tested for errors.
434 * \param ctx GL context.
435 * \param target Buffer object target on which to operate.
436 * \param access Information about how the buffer will be accessed.
437 * \param bufObj Object to be mapped.
438 * \return A pointer to the object's internal data store that can be accessed
441 * \sa glMapBufferARB, dd_function_table::MapBuffer
444 _mesa_buffer_map( struct gl_context
*ctx
, GLenum target
, GLenum access
,
445 struct gl_buffer_object
*bufObj
)
450 /* Just return a direct pointer to the data */
451 if (_mesa_bufferobj_mapped(bufObj
)) {
452 /* already mapped! */
455 bufObj
->Pointer
= bufObj
->Data
;
456 bufObj
->Length
= bufObj
->Size
;
458 return bufObj
->Pointer
;
463 * Default fallback for \c dd_function_table::MapBufferRange().
464 * Called via glMapBufferRange().
467 _mesa_buffer_map_range( struct gl_context
*ctx
, GLenum target
, GLintptr offset
,
468 GLsizeiptr length
, GLbitfield access
,
469 struct gl_buffer_object
*bufObj
)
473 assert(!_mesa_bufferobj_mapped(bufObj
));
474 /* Just return a direct pointer to the data */
475 bufObj
->Pointer
= bufObj
->Data
+ offset
;
476 bufObj
->Length
= length
;
477 bufObj
->Offset
= offset
;
478 bufObj
->AccessFlags
= access
;
479 return bufObj
->Pointer
;
484 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
485 * Called via glFlushMappedBufferRange().
488 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
, GLenum target
,
489 GLintptr offset
, GLsizeiptr length
,
490 struct gl_buffer_object
*obj
)
502 * Default callback for \c dd_function_table::MapBuffer().
504 * The input parameters will have been already tested for errors.
506 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
509 _mesa_buffer_unmap( struct gl_context
*ctx
, GLenum target
,
510 struct gl_buffer_object
*bufObj
)
514 /* XXX we might assert here that bufObj->Pointer is non-null */
515 bufObj
->Pointer
= NULL
;
518 bufObj
->AccessFlags
= 0x0;
524 * Default fallback for \c dd_function_table::CopyBufferSubData().
525 * Called via glCopyBuffserSubData().
528 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
529 struct gl_buffer_object
*src
,
530 struct gl_buffer_object
*dst
,
531 GLintptr readOffset
, GLintptr writeOffset
,
534 GLubyte
*srcPtr
, *dstPtr
;
536 /* buffer should not already be mapped */
537 assert(!_mesa_bufferobj_mapped(src
));
538 assert(!_mesa_bufferobj_mapped(dst
));
540 srcPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_READ_BUFFER
,
542 dstPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_WRITE_BUFFER
,
545 if (srcPtr
&& dstPtr
)
546 memcpy(dstPtr
+ writeOffset
, srcPtr
+ readOffset
, size
);
548 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_READ_BUFFER
, src
);
549 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_WRITE_BUFFER
, dst
);
555 * Initialize the state associated with buffer objects
558 _mesa_init_buffer_objects( struct gl_context
*ctx
)
560 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
561 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
563 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
564 ctx
->Shared
->NullBufferObj
);
565 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
,
566 ctx
->Shared
->NullBufferObj
);
568 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
569 ctx
->Shared
->NullBufferObj
);
570 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
571 ctx
->Shared
->NullBufferObj
);
576 _mesa_free_buffer_objects( struct gl_context
*ctx
)
578 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
579 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
, NULL
);
581 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
582 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
587 * Bind the specified target to buffer for the specified context.
588 * Called by glBindBuffer() and other functions.
591 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
593 struct gl_buffer_object
*oldBufObj
;
594 struct gl_buffer_object
*newBufObj
= NULL
;
595 struct gl_buffer_object
**bindTarget
= NULL
;
597 bindTarget
= get_buffer_target(ctx
, target
);
599 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
603 /* Get pointer to old buffer object (to be unbound) */
604 oldBufObj
= *bindTarget
;
605 if (oldBufObj
&& oldBufObj
->Name
== buffer
)
606 return; /* rebinding the same buffer object- no change */
609 * Get pointer to new buffer object (newBufObj)
612 /* The spec says there's not a buffer object named 0, but we use
613 * one internally because it simplifies things.
615 newBufObj
= ctx
->Shared
->NullBufferObj
;
618 /* non-default buffer object */
619 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
620 if (!newBufObj
|| newBufObj
== &DummyBufferObject
) {
621 /* If this is a new buffer object id, or one which was generated but
622 * never used before, allocate a buffer object now.
624 ASSERT(ctx
->Driver
.NewBufferObject
);
625 newBufObj
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
627 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
630 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, newBufObj
);
634 /* bind new buffer */
635 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
637 /* Pass BindBuffer call to device driver */
638 if (ctx
->Driver
.BindBuffer
)
639 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
644 * Update the default buffer objects in the given context to reference those
645 * specified in the shared state and release those referencing the old
649 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
651 /* Bind the NullBufferObj to remove references to those
652 * in the shared context hash table.
654 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
655 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
656 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
657 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
662 * When we're about to read pixel data out of a PBO (via glDrawPixels,
663 * glTexImage, etc) or write data into a PBO (via glReadPixels,
664 * glGetTexImage, etc) we call this function to check that we're not
665 * going to read out of bounds.
667 * XXX This would also be a convenient time to check that the PBO isn't
668 * currently mapped. Whoever calls this function should check for that.
669 * Remember, we can't use a PBO when it's mapped!
671 * If we're not using a PBO, this is a no-op.
673 * \param width width of image to read/write
674 * \param height height of image to read/write
675 * \param depth depth of image to read/write
676 * \param format format of image to read/write
677 * \param type datatype of image to read/write
678 * \param ptr the user-provided pointer/offset
679 * \return GL_TRUE if the PBO access is OK, GL_FALSE if the access would
683 _mesa_validate_pbo_access(GLuint dimensions
,
684 const struct gl_pixelstore_attrib
*pack
,
685 GLsizei width
, GLsizei height
, GLsizei depth
,
686 GLenum format
, GLenum type
, const GLvoid
*ptr
)
689 const GLubyte
*sizeAddr
; /* buffer size, cast to a pointer */
691 if (!_mesa_is_bufferobj(pack
->BufferObj
))
692 return GL_TRUE
; /* no PBO, OK */
694 if (pack
->BufferObj
->Size
== 0)
698 /* get address of first pixel we'll read */
699 start
= _mesa_image_address(dimensions
, pack
, ptr
, width
, height
,
700 format
, type
, 0, 0, 0);
702 /* get address just past the last pixel we'll read */
703 end
= _mesa_image_address(dimensions
, pack
, ptr
, width
, height
,
704 format
, type
, depth
-1, height
-1, width
);
707 sizeAddr
= ((const GLubyte
*) 0) + pack
->BufferObj
->Size
;
709 if ((const GLubyte
*) start
> sizeAddr
) {
710 /* This will catch negative values / wrap-around */
713 if ((const GLubyte
*) end
> sizeAddr
) {
714 /* Image read goes beyond end of buffer */
724 * For commands that read from a PBO (glDrawPixels, glTexImage,
725 * glPolygonStipple, etc), if we're reading from a PBO, map it read-only
726 * and return the pointer into the PBO. If we're not reading from a
727 * PBO, return \p src as-is.
728 * If non-null return, must call _mesa_unmap_pbo_source() when done.
730 * \return NULL if error, else pointer to start of data
733 _mesa_map_pbo_source(struct gl_context
*ctx
,
734 const struct gl_pixelstore_attrib
*unpack
,
739 if (_mesa_is_bufferobj(unpack
->BufferObj
)) {
740 /* unpack from PBO */
741 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
747 buf
= ADD_POINTERS(buf
, src
);
750 /* unpack from normal memory */
759 * Combine PBO-read validation and mapping.
760 * If any GL errors are detected, they'll be recorded and NULL returned.
761 * \sa _mesa_validate_pbo_access
762 * \sa _mesa_map_pbo_source
763 * A call to this function should have a matching call to
764 * _mesa_unmap_pbo_source().
767 _mesa_map_validate_pbo_source(struct gl_context
*ctx
,
769 const struct gl_pixelstore_attrib
*unpack
,
770 GLsizei width
, GLsizei height
, GLsizei depth
,
771 GLenum format
, GLenum type
, const GLvoid
*ptr
,
774 ASSERT(dimensions
== 1 || dimensions
== 2 || dimensions
== 3);
776 if (!_mesa_is_bufferobj(unpack
->BufferObj
)) {
777 /* non-PBO access: no validation to be done */
781 if (!_mesa_validate_pbo_access(dimensions
, unpack
,
782 width
, height
, depth
, format
, type
, ptr
)) {
783 _mesa_error(ctx
, GL_INVALID_OPERATION
,
784 "%s(out of bounds PBO access)", where
);
788 if (_mesa_bufferobj_mapped(unpack
->BufferObj
)) {
789 /* buffer is already mapped - that's an error */
790 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(PBO is mapped)", where
);
794 ptr
= _mesa_map_pbo_source(ctx
, unpack
, ptr
);
800 * Counterpart to _mesa_map_pbo_source()
803 _mesa_unmap_pbo_source(struct gl_context
*ctx
,
804 const struct gl_pixelstore_attrib
*unpack
)
806 ASSERT(unpack
!= &ctx
->Pack
); /* catch pack/unpack mismatch */
807 if (_mesa_is_bufferobj(unpack
->BufferObj
)) {
808 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_UNPACK_BUFFER_EXT
,
815 * For commands that write to a PBO (glReadPixels, glGetColorTable, etc),
816 * if we're writing to a PBO, map it write-only and return the pointer
817 * into the PBO. If we're not writing to a PBO, return \p dst as-is.
818 * If non-null return, must call _mesa_unmap_pbo_dest() when done.
820 * \return NULL if error, else pointer to start of data
823 _mesa_map_pbo_dest(struct gl_context
*ctx
,
824 const struct gl_pixelstore_attrib
*pack
,
829 if (_mesa_is_bufferobj(pack
->BufferObj
)) {
831 buf
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
,
837 buf
= ADD_POINTERS(buf
, dest
);
840 /* pack to normal memory */
849 * Combine PBO-write validation and mapping.
850 * If any GL errors are detected, they'll be recorded and NULL returned.
851 * \sa _mesa_validate_pbo_access
852 * \sa _mesa_map_pbo_dest
853 * A call to this function should have a matching call to
854 * _mesa_unmap_pbo_dest().
857 _mesa_map_validate_pbo_dest(struct gl_context
*ctx
,
859 const struct gl_pixelstore_attrib
*unpack
,
860 GLsizei width
, GLsizei height
, GLsizei depth
,
861 GLenum format
, GLenum type
, GLvoid
*ptr
,
864 ASSERT(dimensions
== 1 || dimensions
== 2 || dimensions
== 3);
866 if (!_mesa_is_bufferobj(unpack
->BufferObj
)) {
867 /* non-PBO access: no validation to be done */
871 if (!_mesa_validate_pbo_access(dimensions
, unpack
,
872 width
, height
, depth
, format
, type
, ptr
)) {
873 _mesa_error(ctx
, GL_INVALID_OPERATION
,
874 "%s(out of bounds PBO access)", where
);
878 if (_mesa_bufferobj_mapped(unpack
->BufferObj
)) {
879 /* buffer is already mapped - that's an error */
880 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(PBO is mapped)", where
);
884 ptr
= _mesa_map_pbo_dest(ctx
, unpack
, ptr
);
890 * Counterpart to _mesa_map_pbo_dest()
893 _mesa_unmap_pbo_dest(struct gl_context
*ctx
,
894 const struct gl_pixelstore_attrib
*pack
)
896 ASSERT(pack
!= &ctx
->Unpack
); /* catch pack/unpack mismatch */
897 if (_mesa_is_bufferobj(pack
->BufferObj
)) {
898 ctx
->Driver
.UnmapBuffer(ctx
, GL_PIXEL_PACK_BUFFER_EXT
, pack
->BufferObj
);
905 * Return the gl_buffer_object for the given ID.
906 * Always return NULL for ID 0.
908 struct gl_buffer_object
*
909 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
914 return (struct gl_buffer_object
*)
915 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
920 * If *ptr points to obj, set ptr = the Null/default buffer object.
921 * This is a helper for buffer object deletion.
922 * The GL spec says that deleting a buffer object causes it to get
923 * unbound from all arrays in the current context.
926 unbind(struct gl_context
*ctx
,
927 struct gl_buffer_object
**ptr
,
928 struct gl_buffer_object
*obj
)
931 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
937 * Plug default/fallback buffer object functions into the device
941 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
943 /* GL_ARB_vertex/pixel_buffer_object */
944 driver
->NewBufferObject
= _mesa_new_buffer_object
;
945 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
946 driver
->BindBuffer
= NULL
;
947 driver
->BufferData
= _mesa_buffer_data
;
948 driver
->BufferSubData
= _mesa_buffer_subdata
;
949 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
950 driver
->MapBuffer
= _mesa_buffer_map
;
951 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
953 /* GL_ARB_map_buffer_range */
954 driver
->MapBufferRange
= _mesa_buffer_map_range
;
955 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
957 /* GL_ARB_copy_buffer */
958 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
963 /**********************************************************************/
965 /**********************************************************************/
968 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
970 GET_CURRENT_CONTEXT(ctx
);
971 ASSERT_OUTSIDE_BEGIN_END(ctx
);
973 bind_buffer_object(ctx
, target
, buffer
);
978 * Delete a set of buffer objects.
980 * \param n Number of buffer objects to delete.
981 * \param ids Array of \c n buffer object IDs.
984 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
986 GET_CURRENT_CONTEXT(ctx
);
988 ASSERT_OUTSIDE_BEGIN_END(ctx
);
991 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
995 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
997 for (i
= 0; i
< n
; i
++) {
998 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
1000 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
1003 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1005 if (_mesa_bufferobj_mapped(bufObj
)) {
1006 /* if mapped, unmap it now */
1007 ctx
->Driver
.UnmapBuffer(ctx
, 0, bufObj
);
1008 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1009 bufObj
->Pointer
= NULL
;
1012 /* unbind any vertex pointers bound to this buffer */
1013 unbind(ctx
, &arrayObj
->Vertex
.BufferObj
, bufObj
);
1014 unbind(ctx
, &arrayObj
->Weight
.BufferObj
, bufObj
);
1015 unbind(ctx
, &arrayObj
->Normal
.BufferObj
, bufObj
);
1016 unbind(ctx
, &arrayObj
->Color
.BufferObj
, bufObj
);
1017 unbind(ctx
, &arrayObj
->SecondaryColor
.BufferObj
, bufObj
);
1018 unbind(ctx
, &arrayObj
->FogCoord
.BufferObj
, bufObj
);
1019 unbind(ctx
, &arrayObj
->Index
.BufferObj
, bufObj
);
1020 unbind(ctx
, &arrayObj
->EdgeFlag
.BufferObj
, bufObj
);
1021 for (j
= 0; j
< Elements(arrayObj
->TexCoord
); j
++) {
1022 unbind(ctx
, &arrayObj
->TexCoord
[j
].BufferObj
, bufObj
);
1024 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
1025 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
1028 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1029 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
1031 if (ctx
->Array
.ElementArrayBufferObj
== bufObj
) {
1032 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
1035 /* unbind any pixel pack/unpack pointers bound to this buffer */
1036 if (ctx
->Pack
.BufferObj
== bufObj
) {
1037 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
1039 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1040 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
1043 /* The ID is immediately freed for re-use */
1044 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
1045 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1049 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1054 * Generate a set of unique buffer object IDs and store them in \c buffer.
1056 * \param n Number of IDs to generate.
1057 * \param buffer Array of \c n locations to store the IDs.
1060 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
1062 GET_CURRENT_CONTEXT(ctx
);
1065 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1068 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
1077 * This must be atomic (generation and allocation of buffer object IDs)
1079 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1081 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1083 /* Insert the ID and pointer to dummy buffer object into hash table */
1084 for (i
= 0; i
< n
; i
++) {
1085 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
1086 &DummyBufferObject
);
1087 buffer
[i
] = first
+ i
;
1090 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1095 * Determine if ID is the name of a buffer object.
1097 * \param id ID of the potential buffer object.
1098 * \return \c GL_TRUE if \c id is the name of a buffer object,
1099 * \c GL_FALSE otherwise.
1101 GLboolean GLAPIENTRY
1102 _mesa_IsBufferARB(GLuint id
)
1104 struct gl_buffer_object
*bufObj
;
1105 GET_CURRENT_CONTEXT(ctx
);
1106 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1108 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1109 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1110 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1112 return bufObj
&& bufObj
!= &DummyBufferObject
;
1117 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
1118 const GLvoid
* data
, GLenum usage
)
1120 GET_CURRENT_CONTEXT(ctx
);
1121 struct gl_buffer_object
*bufObj
;
1122 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1125 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
1130 case GL_STREAM_DRAW_ARB
:
1131 case GL_STREAM_READ_ARB
:
1132 case GL_STREAM_COPY_ARB
:
1133 case GL_STATIC_DRAW_ARB
:
1134 case GL_STATIC_READ_ARB
:
1135 case GL_STATIC_COPY_ARB
:
1136 case GL_DYNAMIC_DRAW_ARB
:
1137 case GL_DYNAMIC_READ_ARB
:
1138 case GL_DYNAMIC_COPY_ARB
:
1142 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(usage)");
1146 bufObj
= get_buffer(ctx
, target
);
1148 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(target)" );
1151 if (!_mesa_is_bufferobj(bufObj
)) {
1152 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBufferDataARB(buffer 0)" );
1156 if (_mesa_bufferobj_mapped(bufObj
)) {
1157 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1158 ctx
->Driver
.UnmapBuffer(ctx
, target
, bufObj
);
1159 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1160 ASSERT(bufObj
->Pointer
== NULL
);
1163 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1165 bufObj
->Written
= GL_TRUE
;
1168 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1169 bufObj
->Name
, size
, data
, usage
);
1176 ASSERT(ctx
->Driver
.BufferData
);
1177 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
1178 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
1184 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
1185 GLsizeiptrARB size
, const GLvoid
* data
)
1187 GET_CURRENT_CONTEXT(ctx
);
1188 struct gl_buffer_object
*bufObj
;
1189 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1191 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
1192 "glBufferSubDataARB" );
1194 /* error already recorded */
1201 bufObj
->Written
= GL_TRUE
;
1203 ASSERT(ctx
->Driver
.BufferSubData
);
1204 ctx
->Driver
.BufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
1209 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
1210 GLsizeiptrARB size
, void * data
)
1212 GET_CURRENT_CONTEXT(ctx
);
1213 struct gl_buffer_object
*bufObj
;
1214 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1216 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
1217 "glGetBufferSubDataARB" );
1219 /* error already recorded */
1223 ASSERT(ctx
->Driver
.GetBufferSubData
);
1224 ctx
->Driver
.GetBufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
1229 _mesa_MapBufferARB(GLenum target
, GLenum access
)
1231 GET_CURRENT_CONTEXT(ctx
);
1232 struct gl_buffer_object
* bufObj
;
1233 GLbitfield accessFlags
;
1236 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1239 case GL_READ_ONLY_ARB
:
1240 accessFlags
= GL_MAP_READ_BIT
;
1242 case GL_WRITE_ONLY_ARB
:
1243 accessFlags
= GL_MAP_WRITE_BIT
;
1245 case GL_READ_WRITE_ARB
:
1246 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1249 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1253 bufObj
= get_buffer(ctx
, target
);
1255 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(target)" );
1258 if (!_mesa_is_bufferobj(bufObj
)) {
1259 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(buffer 0)" );
1262 if (_mesa_bufferobj_mapped(bufObj
)) {
1263 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1267 ASSERT(ctx
->Driver
.MapBuffer
);
1268 map
= ctx
->Driver
.MapBuffer( ctx
, target
, access
, bufObj
);
1270 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1274 /* The driver callback should have set these fields.
1275 * This is important because other modules (like VBO) might call
1276 * the driver function directly.
1278 ASSERT(bufObj
->Pointer
== map
);
1279 ASSERT(bufObj
->Length
== bufObj
->Size
);
1280 ASSERT(bufObj
->Offset
== 0);
1281 bufObj
->AccessFlags
= accessFlags
;
1284 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1285 bufObj
->Written
= GL_TRUE
;
1288 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1289 bufObj
->Name
, bufObj
->Size
, access
);
1290 if (access
== GL_WRITE_ONLY_ARB
) {
1292 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1293 for (i
= 0; i
< bufObj
->Size
; i
++)
1300 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1302 /* buffer is 100 bytes larger than requested, fill with magic value */
1303 for (i
= 0; i
< 100; i
++) {
1304 buf
[bufObj
->Size
- i
- 1] = 123;
1309 return bufObj
->Pointer
;
1313 GLboolean GLAPIENTRY
1314 _mesa_UnmapBufferARB(GLenum target
)
1316 GET_CURRENT_CONTEXT(ctx
);
1317 struct gl_buffer_object
*bufObj
;
1318 GLboolean status
= GL_TRUE
;
1319 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1321 bufObj
= get_buffer(ctx
, target
);
1323 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1326 if (!_mesa_is_bufferobj(bufObj
)) {
1327 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1330 if (!_mesa_bufferobj_mapped(bufObj
)) {
1331 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1336 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1337 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1339 /* check that last 100 bytes are still = magic value */
1340 for (i
= 0; i
< 100; i
++) {
1341 GLuint pos
= bufObj
->Size
- i
- 1;
1342 if (buf
[pos
] != 123) {
1343 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1344 " at position %d (value = %u)\n",
1352 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1353 GLuint i
, unchanged
= 0;
1354 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1356 /* check which bytes changed */
1357 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1358 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1365 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1366 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1371 status
= ctx
->Driver
.UnmapBuffer( ctx
, target
, bufObj
);
1372 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1373 ASSERT(bufObj
->Pointer
== NULL
);
1374 ASSERT(bufObj
->Offset
== 0);
1375 ASSERT(bufObj
->Length
== 0);
1382 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1384 GET_CURRENT_CONTEXT(ctx
);
1385 struct gl_buffer_object
*bufObj
;
1386 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1388 bufObj
= get_buffer(ctx
, target
);
1390 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1393 if (!_mesa_is_bufferobj(bufObj
)) {
1394 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1399 case GL_BUFFER_SIZE_ARB
:
1400 *params
= (GLint
) bufObj
->Size
;
1402 case GL_BUFFER_USAGE_ARB
:
1403 *params
= bufObj
->Usage
;
1405 case GL_BUFFER_ACCESS_ARB
:
1406 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1408 case GL_BUFFER_MAPPED_ARB
:
1409 *params
= _mesa_bufferobj_mapped(bufObj
);
1411 case GL_BUFFER_ACCESS_FLAGS
:
1412 if (ctx
->VersionMajor
< 3)
1414 *params
= bufObj
->AccessFlags
;
1416 case GL_BUFFER_MAP_OFFSET
:
1417 if (ctx
->VersionMajor
< 3)
1419 *params
= (GLint
) bufObj
->Offset
;
1421 case GL_BUFFER_MAP_LENGTH
:
1422 if (ctx
->VersionMajor
< 3)
1424 *params
= (GLint
) bufObj
->Length
;
1427 ; /* fall-through */
1431 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1432 _mesa_lookup_enum_by_nr(pname
));
1438 * This is pretty much a duplicate of GetBufferParameteriv() but the
1439 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1442 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1444 GET_CURRENT_CONTEXT(ctx
);
1445 struct gl_buffer_object
*bufObj
;
1446 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1448 bufObj
= get_buffer(ctx
, target
);
1450 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1453 if (!_mesa_is_bufferobj(bufObj
)) {
1454 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1459 case GL_BUFFER_SIZE_ARB
:
1460 *params
= bufObj
->Size
;
1462 case GL_BUFFER_USAGE_ARB
:
1463 *params
= bufObj
->Usage
;
1465 case GL_BUFFER_ACCESS_ARB
:
1466 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1468 case GL_BUFFER_ACCESS_FLAGS
:
1469 if (ctx
->VersionMajor
< 3)
1471 *params
= bufObj
->AccessFlags
;
1473 case GL_BUFFER_MAPPED_ARB
:
1474 *params
= _mesa_bufferobj_mapped(bufObj
);
1476 case GL_BUFFER_MAP_OFFSET
:
1477 if (ctx
->VersionMajor
< 3)
1479 *params
= bufObj
->Offset
;
1481 case GL_BUFFER_MAP_LENGTH
:
1482 if (ctx
->VersionMajor
< 3)
1484 *params
= bufObj
->Length
;
1487 ; /* fall-through */
1491 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1492 _mesa_lookup_enum_by_nr(pname
));
1497 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1499 GET_CURRENT_CONTEXT(ctx
);
1500 struct gl_buffer_object
* bufObj
;
1501 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1503 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1504 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1508 bufObj
= get_buffer(ctx
, target
);
1510 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1513 if (!_mesa_is_bufferobj(bufObj
)) {
1514 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1518 *params
= bufObj
->Pointer
;
1523 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1524 GLintptr readOffset
, GLintptr writeOffset
,
1527 GET_CURRENT_CONTEXT(ctx
);
1528 struct gl_buffer_object
*src
, *dst
;
1529 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1531 src
= get_buffer(ctx
, readTarget
);
1532 if (!src
|| !_mesa_is_bufferobj(src
)) {
1533 _mesa_error(ctx
, GL_INVALID_ENUM
,
1534 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1538 dst
= get_buffer(ctx
, writeTarget
);
1539 if (!dst
|| !_mesa_is_bufferobj(dst
)) {
1540 _mesa_error(ctx
, GL_INVALID_ENUM
,
1541 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1545 if (_mesa_bufferobj_mapped(src
)) {
1546 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1547 "glCopyBuffserSubData(readBuffer is mapped)");
1551 if (_mesa_bufferobj_mapped(dst
)) {
1552 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1553 "glCopyBuffserSubData(writeBuffer is mapped)");
1557 if (readOffset
< 0) {
1558 _mesa_error(ctx
, GL_INVALID_VALUE
,
1559 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1563 if (writeOffset
< 0) {
1564 _mesa_error(ctx
, GL_INVALID_VALUE
,
1565 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1569 if (readOffset
+ size
> src
->Size
) {
1570 _mesa_error(ctx
, GL_INVALID_VALUE
,
1571 "glCopyBuffserSubData(readOffset + size = %d)",
1572 (int) (readOffset
+ size
));
1576 if (writeOffset
+ size
> dst
->Size
) {
1577 _mesa_error(ctx
, GL_INVALID_VALUE
,
1578 "glCopyBuffserSubData(writeOffset + size = %d)",
1579 (int) (writeOffset
+ size
));
1584 if (readOffset
+ size
<= writeOffset
) {
1587 else if (writeOffset
+ size
<= readOffset
) {
1591 /* overlapping src/dst is illegal */
1592 _mesa_error(ctx
, GL_INVALID_VALUE
,
1593 "glCopyBuffserSubData(overlapping src/dst)");
1598 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1603 * See GL_ARB_map_buffer_range spec
1606 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1609 GET_CURRENT_CONTEXT(ctx
);
1610 struct gl_buffer_object
*bufObj
;
1613 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1615 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1616 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1617 "glMapBufferRange(extension not supported)");
1622 _mesa_error(ctx
, GL_INVALID_VALUE
,
1623 "glMapBufferRange(offset = %ld)", (long)offset
);
1628 _mesa_error(ctx
, GL_INVALID_VALUE
,
1629 "glMapBufferRange(length = %ld)", (long)length
);
1633 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1634 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1635 "glMapBufferRange(access indicates neither read or write)");
1639 if (access
& GL_MAP_READ_BIT
) {
1640 if ((access
& GL_MAP_INVALIDATE_RANGE_BIT
) ||
1641 (access
& GL_MAP_INVALIDATE_BUFFER_BIT
) ||
1642 (access
& GL_MAP_UNSYNCHRONIZED_BIT
)) {
1643 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1644 "glMapBufferRange(invalid access flags)");
1649 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1650 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1651 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1652 "glMapBufferRange(invalid access flags)");
1656 bufObj
= get_buffer(ctx
, target
);
1657 if (!bufObj
|| !_mesa_is_bufferobj(bufObj
)) {
1658 _mesa_error(ctx
, GL_INVALID_ENUM
,
1659 "glMapBufferRange(target = 0x%x)", target
);
1663 if (offset
+ length
> bufObj
->Size
) {
1664 _mesa_error(ctx
, GL_INVALID_VALUE
,
1665 "glMapBufferRange(offset + length > size)");
1669 if (_mesa_bufferobj_mapped(bufObj
)) {
1670 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1671 "glMapBufferRange(buffer already mapped)");
1675 ASSERT(ctx
->Driver
.MapBufferRange
);
1676 map
= ctx
->Driver
.MapBufferRange(ctx
, target
, offset
, length
,
1679 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1682 /* The driver callback should have set all these fields.
1683 * This is important because other modules (like VBO) might call
1684 * the driver function directly.
1686 ASSERT(bufObj
->Pointer
== map
);
1687 ASSERT(bufObj
->Length
== length
);
1688 ASSERT(bufObj
->Offset
== offset
);
1689 ASSERT(bufObj
->AccessFlags
== access
);
1697 * See GL_ARB_map_buffer_range spec
1700 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1702 GET_CURRENT_CONTEXT(ctx
);
1703 struct gl_buffer_object
*bufObj
;
1704 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1706 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1707 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1708 "glMapBufferRange(extension not supported)");
1713 _mesa_error(ctx
, GL_INVALID_VALUE
,
1714 "glMapBufferRange(offset = %ld)", (long)offset
);
1719 _mesa_error(ctx
, GL_INVALID_VALUE
,
1720 "glMapBufferRange(length = %ld)", (long)length
);
1724 bufObj
= get_buffer(ctx
, target
);
1726 _mesa_error(ctx
, GL_INVALID_ENUM
,
1727 "glMapBufferRange(target = 0x%x)", target
);
1731 if (!_mesa_is_bufferobj(bufObj
)) {
1732 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1733 "glMapBufferRange(current buffer is 0)");
1737 if (!_mesa_bufferobj_mapped(bufObj
)) {
1738 /* buffer is not mapped */
1739 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1740 "glMapBufferRange(buffer is not mapped)");
1744 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1745 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1746 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1750 if (offset
+ length
> bufObj
->Length
) {
1751 _mesa_error(ctx
, GL_INVALID_VALUE
,
1752 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1753 (long)offset
, (long)length
, (long)bufObj
->Length
);
1757 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1759 if (ctx
->Driver
.FlushMappedBufferRange
)
1760 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
, offset
, length
, bufObj
);
1764 #if FEATURE_APPLE_object_purgeable
1766 _mesa_BufferObjectPurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1768 struct gl_buffer_object
*bufObj
;
1771 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1773 _mesa_error(ctx
, GL_INVALID_VALUE
,
1774 "glObjectPurgeable(name = 0x%x)", name
);
1777 if (!_mesa_is_bufferobj(bufObj
)) {
1778 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1782 if (bufObj
->Purgeable
) {
1783 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1784 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1785 return GL_VOLATILE_APPLE
;
1788 bufObj
->Purgeable
= GL_TRUE
;
1790 retval
= GL_VOLATILE_APPLE
;
1791 if (ctx
->Driver
.BufferObjectPurgeable
)
1792 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1799 _mesa_RenderObjectPurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1801 struct gl_renderbuffer
*bufObj
;
1804 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1806 _mesa_error(ctx
, GL_INVALID_VALUE
,
1807 "glObjectUnpurgeable(name = 0x%x)", name
);
1811 if (bufObj
->Purgeable
) {
1812 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1813 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1814 return GL_VOLATILE_APPLE
;
1817 bufObj
->Purgeable
= GL_TRUE
;
1819 retval
= GL_VOLATILE_APPLE
;
1820 if (ctx
->Driver
.RenderObjectPurgeable
)
1821 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1828 _mesa_TextureObjectPurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1830 struct gl_texture_object
*bufObj
;
1833 bufObj
= _mesa_lookup_texture(ctx
, name
);
1835 _mesa_error(ctx
, GL_INVALID_VALUE
,
1836 "glObjectPurgeable(name = 0x%x)", name
);
1840 if (bufObj
->Purgeable
) {
1841 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1842 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1843 return GL_VOLATILE_APPLE
;
1846 bufObj
->Purgeable
= GL_TRUE
;
1848 retval
= GL_VOLATILE_APPLE
;
1849 if (ctx
->Driver
.TextureObjectPurgeable
)
1850 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1857 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1861 GET_CURRENT_CONTEXT(ctx
);
1862 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1865 _mesa_error(ctx
, GL_INVALID_VALUE
,
1866 "glObjectPurgeable(name = 0x%x)", name
);
1871 case GL_VOLATILE_APPLE
:
1872 case GL_RELEASED_APPLE
:
1876 _mesa_error(ctx
, GL_INVALID_ENUM
,
1877 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1882 switch (objectType
) {
1884 retval
= _mesa_TextureObjectPurgeable (ctx
, name
, option
);
1886 case GL_RENDERBUFFER_EXT
:
1887 retval
= _mesa_RenderObjectPurgeable (ctx
, name
, option
);
1889 case GL_BUFFER_OBJECT_APPLE
:
1890 retval
= _mesa_BufferObjectPurgeable (ctx
, name
, option
);
1893 _mesa_error(ctx
, GL_INVALID_ENUM
,
1894 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1899 /* In strict conformance to the spec, we must only return VOLATILE when
1900 * when passed the VOLATILE option. Madness.
1902 * XXX First fix the spec, then fix me.
1904 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1909 _mesa_BufferObjectUnpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1911 struct gl_buffer_object
*bufObj
;
1914 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1916 _mesa_error(ctx
, GL_INVALID_VALUE
,
1917 "glObjectUnpurgeable(name = 0x%x)", name
);
1921 if (! bufObj
->Purgeable
) {
1922 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1923 "glObjectUnpurgeable(name = 0x%x) object is "
1924 " already \"unpurged\"", name
);
1928 bufObj
->Purgeable
= GL_FALSE
;
1931 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1932 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1939 _mesa_RenderObjectUnpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1941 struct gl_renderbuffer
*bufObj
;
1944 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1946 _mesa_error(ctx
, GL_INVALID_VALUE
,
1947 "glObjectUnpurgeable(name = 0x%x)", name
);
1951 if (! bufObj
->Purgeable
) {
1952 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1953 "glObjectUnpurgeable(name = 0x%x) object is "
1954 " already \"unpurged\"", name
);
1958 bufObj
->Purgeable
= GL_FALSE
;
1961 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1962 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1969 _mesa_TextureObjectUnpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1971 struct gl_texture_object
*bufObj
;
1974 bufObj
= _mesa_lookup_texture(ctx
, name
);
1976 _mesa_error(ctx
, GL_INVALID_VALUE
,
1977 "glObjectUnpurgeable(name = 0x%x)", name
);
1981 if (! bufObj
->Purgeable
) {
1982 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1983 "glObjectUnpurgeable(name = 0x%x) object is"
1984 " already \"unpurged\"", name
);
1988 bufObj
->Purgeable
= GL_FALSE
;
1991 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1992 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1999 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2001 GET_CURRENT_CONTEXT(ctx
);
2002 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2005 _mesa_error(ctx
, GL_INVALID_VALUE
,
2006 "glObjectUnpurgeable(name = 0x%x)", name
);
2011 case GL_RETAINED_APPLE
:
2012 case GL_UNDEFINED_APPLE
:
2016 _mesa_error(ctx
, GL_INVALID_ENUM
,
2017 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
2022 switch (objectType
) {
2023 case GL_BUFFER_OBJECT_APPLE
:
2024 return _mesa_BufferObjectUnpurgeable(ctx
, name
, option
);
2026 return _mesa_TextureObjectUnpurgeable(ctx
, name
, option
);
2027 case GL_RENDERBUFFER_EXT
:
2028 return _mesa_RenderObjectUnpurgeable(ctx
, name
, option
);
2030 _mesa_error(ctx
, GL_INVALID_ENUM
,
2031 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
2039 _mesa_GetBufferObjectParameterivAPPLE(struct gl_context
*ctx
, GLuint name
,
2040 GLenum pname
, GLint
* params
)
2042 struct gl_buffer_object
*bufObj
;
2044 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2046 _mesa_error(ctx
, GL_INVALID_VALUE
,
2047 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
2052 case GL_PURGEABLE_APPLE
:
2053 *params
= bufObj
->Purgeable
;
2056 _mesa_error(ctx
, GL_INVALID_ENUM
,
2057 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2065 _mesa_GetRenderObjectParameterivAPPLE(struct gl_context
*ctx
, GLuint name
,
2066 GLenum pname
, GLint
* params
)
2068 struct gl_renderbuffer
*bufObj
;
2070 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2072 _mesa_error(ctx
, GL_INVALID_VALUE
,
2073 "glObjectUnpurgeable(name = 0x%x)", name
);
2078 case GL_PURGEABLE_APPLE
:
2079 *params
= bufObj
->Purgeable
;
2082 _mesa_error(ctx
, GL_INVALID_ENUM
,
2083 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2091 _mesa_GetTextureObjectParameterivAPPLE(struct gl_context
*ctx
, GLuint name
,
2092 GLenum pname
, GLint
* params
)
2094 struct gl_texture_object
*bufObj
;
2096 bufObj
= _mesa_lookup_texture(ctx
, name
);
2098 _mesa_error(ctx
, GL_INVALID_VALUE
,
2099 "glObjectUnpurgeable(name = 0x%x)", name
);
2104 case GL_PURGEABLE_APPLE
:
2105 *params
= bufObj
->Purgeable
;
2108 _mesa_error(ctx
, GL_INVALID_ENUM
,
2109 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2117 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
2120 GET_CURRENT_CONTEXT(ctx
);
2123 _mesa_error(ctx
, GL_INVALID_VALUE
,
2124 "glGetObjectParameteriv(name = 0x%x)", name
);
2128 switch (objectType
) {
2130 _mesa_GetTextureObjectParameterivAPPLE (ctx
, name
, pname
, params
);
2132 case GL_BUFFER_OBJECT_APPLE
:
2133 _mesa_GetBufferObjectParameterivAPPLE (ctx
, name
, pname
, params
);
2135 case GL_RENDERBUFFER_EXT
:
2136 _mesa_GetRenderObjectParameterivAPPLE (ctx
, name
, pname
, params
);
2139 _mesa_error(ctx
, GL_INVALID_ENUM
,
2140 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
2145 #endif /* FEATURE_APPLE_object_purgeable */