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*/
53 * Used as a placeholder for buffer objects between glGenBuffers() and
54 * glBindBuffer() so that glIsBuffer() can work correctly.
56 static struct gl_buffer_object DummyBufferObject
;
60 * Return pointer to address of a buffer object target.
61 * \param ctx the GL context
62 * \param target the buffer object target to be retrieved.
63 * \return pointer to pointer to the buffer object bound to \c target in the
64 * specified context or \c NULL if \c target is invalid.
66 static inline struct gl_buffer_object
**
67 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
70 case GL_ARRAY_BUFFER_ARB
:
71 return &ctx
->Array
.ArrayBufferObj
;
72 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
73 return &ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
74 case GL_PIXEL_PACK_BUFFER_EXT
:
75 return &ctx
->Pack
.BufferObj
;
76 case GL_PIXEL_UNPACK_BUFFER_EXT
:
77 return &ctx
->Unpack
.BufferObj
;
78 case GL_COPY_READ_BUFFER
:
79 return &ctx
->CopyReadBuffer
;
80 case GL_COPY_WRITE_BUFFER
:
81 return &ctx
->CopyWriteBuffer
;
82 #if FEATURE_EXT_transform_feedback
83 case GL_TRANSFORM_FEEDBACK_BUFFER
:
84 if (ctx
->Extensions
.EXT_transform_feedback
) {
85 return &ctx
->TransformFeedback
.CurrentBuffer
;
89 case GL_TEXTURE_BUFFER
:
90 if (ctx
->Extensions
.ARB_texture_buffer_object
) {
91 return &ctx
->Texture
.BufferObject
;
102 * Get the buffer object bound to the specified target in a GL context.
103 * \param ctx the GL context
104 * \param target the buffer object target to be retrieved.
105 * \return pointer to the buffer object bound to \c target in the
106 * specified context or \c NULL if \c target is invalid.
108 static inline struct gl_buffer_object
*
109 get_buffer(struct gl_context
*ctx
, GLenum target
)
111 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
119 default_access_mode(const struct gl_context
*ctx
)
121 /* Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
123 * Name Type Initial Value Legal Values
125 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
128 * However, table 6.8 in the GL_OES_mapbuffer extension says:
130 * Get Value Type Get Command Value Description
131 * --------- ---- ----------- ----- -----------
132 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
134 * The difference is because GL_OES_mapbuffer only supports mapping buffers
137 return (ctx
->API
== API_OPENGLES
)
138 ? GL_MAP_WRITE_BIT
: (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
);
143 * Convert a GLbitfield describing the mapped buffer access flags
144 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
147 simplified_access_mode(GLbitfield access
)
149 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
150 if ((access
& rwFlags
) == rwFlags
)
151 return GL_READ_WRITE
;
152 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
154 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
155 return GL_WRITE_ONLY
;
156 return GL_READ_WRITE
; /* this should never happen, but no big deal */
161 * Tests the subdata range parameters and sets the GL error code for
162 * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
164 * \param ctx GL context.
165 * \param target Buffer object target on which to operate.
166 * \param offset Offset of the first byte of the subdata range.
167 * \param size Size, in bytes, of the subdata range.
168 * \param caller Name of calling function for recording errors.
169 * \return A pointer to the buffer object bound to \c target in the
170 * specified context or \c NULL if any of the parameter or state
171 * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
174 * \sa glBufferSubDataARB, glGetBufferSubDataARB
176 static struct gl_buffer_object
*
177 buffer_object_subdata_range_good( struct gl_context
* ctx
, GLenum target
,
178 GLintptrARB offset
, GLsizeiptrARB size
,
181 struct gl_buffer_object
*bufObj
;
184 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
189 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
193 bufObj
= get_buffer(ctx
, target
);
195 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", caller
);
198 if (!_mesa_is_bufferobj(bufObj
)) {
199 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
202 if (offset
+ size
> bufObj
->Size
) {
203 _mesa_error(ctx
, GL_INVALID_VALUE
,
204 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
205 (unsigned long) offset
,
206 (unsigned long) size
,
207 (unsigned long) bufObj
->Size
);
210 if (_mesa_bufferobj_mapped(bufObj
)) {
211 /* Buffer is currently mapped */
212 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
221 * Allocate and initialize a new buffer object.
223 * Default callback for the \c dd_function_table::NewBufferObject() hook.
225 static struct gl_buffer_object
*
226 _mesa_new_buffer_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
228 struct gl_buffer_object
*obj
;
232 obj
= MALLOC_STRUCT(gl_buffer_object
);
233 _mesa_initialize_buffer_object(ctx
, obj
, name
, target
);
239 * Delete a buffer object.
241 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
244 _mesa_delete_buffer_object(struct gl_context
*ctx
,
245 struct gl_buffer_object
*bufObj
)
252 /* assign strange values here to help w/ debugging */
253 bufObj
->RefCount
= -1000;
256 _glthread_DESTROY_MUTEX(bufObj
->Mutex
);
263 * Set ptr to bufObj w/ reference counting.
264 * This is normally only called from the _mesa_reference_buffer_object() macro
265 * when there's a real pointer change.
268 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
269 struct gl_buffer_object
**ptr
,
270 struct gl_buffer_object
*bufObj
)
273 /* Unreference the old buffer */
274 GLboolean deleteFlag
= GL_FALSE
;
275 struct gl_buffer_object
*oldObj
= *ptr
;
277 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
278 ASSERT(oldObj
->RefCount
> 0);
281 printf("BufferObj %p %d DECR to %d\n",
282 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
284 deleteFlag
= (oldObj
->RefCount
== 0);
285 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
289 /* some sanity checking: don't delete a buffer still in use */
291 /* unfortunately, these tests are invalid during context tear-down */
292 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
293 ASSERT(ctx
->Array
.ArrayObj
->ElementArrayBufferObj
!= bufObj
);
294 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
297 ASSERT(ctx
->Driver
.DeleteBuffer
);
298 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
306 /* reference new buffer */
307 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
308 if (bufObj
->RefCount
== 0) {
309 /* this buffer's being deleted (look just above) */
310 /* Not sure this can every really happen. Warn if it does. */
311 _mesa_problem(NULL
, "referencing deleted buffer object");
317 printf("BufferObj %p %d INCR to %d\n",
318 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
322 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
328 * Initialize a buffer object to default values.
331 _mesa_initialize_buffer_object( struct gl_context
*ctx
,
332 struct gl_buffer_object
*obj
,
333 GLuint name
, GLenum target
)
337 memset(obj
, 0, sizeof(struct gl_buffer_object
));
338 _glthread_INIT_MUTEX(obj
->Mutex
);
341 obj
->Usage
= GL_STATIC_DRAW_ARB
;
342 obj
->AccessFlags
= default_access_mode(ctx
);
347 * Allocate space for and store data in a buffer object. Any data that was
348 * previously stored in the buffer object is lost. If \c data is \c NULL,
349 * memory will be allocated, but no copy will occur.
351 * This is the default callback for \c dd_function_table::BufferData()
352 * Note that all GL error checking will have been done already.
354 * \param ctx GL context.
355 * \param target Buffer object target on which to operate.
356 * \param size Size, in bytes, of the new data store.
357 * \param data Pointer to the data to store in the buffer object. This
358 * pointer may be \c NULL.
359 * \param usage Hints about how the data will be used.
360 * \param bufObj Object to be used.
362 * \return GL_TRUE for success, GL_FALSE for failure
363 * \sa glBufferDataARB, dd_function_table::BufferData.
366 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
367 const GLvoid
* data
, GLenum usage
,
368 struct gl_buffer_object
* bufObj
)
372 (void) ctx
; (void) target
;
374 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
376 bufObj
->Data
= (GLubyte
*) new_data
;
378 bufObj
->Usage
= usage
;
381 memcpy( bufObj
->Data
, data
, size
);
393 * Replace data in a subrange of buffer object. If the data range
394 * specified by \c size + \c offset extends beyond the end of the buffer or
395 * if \c data is \c NULL, no copy is performed.
397 * This is the default callback for \c dd_function_table::BufferSubData()
398 * Note that all GL error checking will have been done already.
400 * \param ctx GL context.
401 * \param target Buffer object target on which to operate.
402 * \param offset Offset of the first byte to be modified.
403 * \param size Size, in bytes, of the data range.
404 * \param data Pointer to the data to store in the buffer object.
405 * \param bufObj Object to be used.
407 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
410 _mesa_buffer_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
411 GLsizeiptrARB size
, const GLvoid
* data
,
412 struct gl_buffer_object
* bufObj
)
416 /* this should have been caught in _mesa_BufferSubData() */
417 ASSERT(size
+ offset
<= bufObj
->Size
);
420 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
426 * Retrieve data from a subrange of buffer object. If the data range
427 * specified by \c size + \c offset extends beyond the end of the buffer or
428 * if \c data is \c NULL, no copy is performed.
430 * This is the default callback for \c dd_function_table::GetBufferSubData()
431 * Note that all GL error checking will have been done already.
433 * \param ctx GL context.
434 * \param target Buffer object target on which to operate.
435 * \param offset Offset of the first byte to be fetched.
436 * \param size Size, in bytes, of the data range.
437 * \param data Destination for data
438 * \param bufObj Object to be used.
440 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
443 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
444 GLsizeiptrARB size
, GLvoid
* data
,
445 struct gl_buffer_object
* bufObj
)
449 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
450 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
456 * Default fallback for \c dd_function_table::MapBufferRange().
457 * Called via glMapBufferRange().
460 _mesa_buffer_map_range( struct gl_context
*ctx
, GLintptr offset
,
461 GLsizeiptr length
, GLbitfield access
,
462 struct gl_buffer_object
*bufObj
)
465 assert(!_mesa_bufferobj_mapped(bufObj
));
466 /* Just return a direct pointer to the data */
467 bufObj
->Pointer
= bufObj
->Data
+ offset
;
468 bufObj
->Length
= length
;
469 bufObj
->Offset
= offset
;
470 bufObj
->AccessFlags
= access
;
471 return bufObj
->Pointer
;
476 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
477 * Called via glFlushMappedBufferRange().
480 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
,
481 GLintptr offset
, GLsizeiptr length
,
482 struct gl_buffer_object
*obj
)
493 * Default callback for \c dd_function_table::MapBuffer().
495 * The input parameters will have been already tested for errors.
497 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
500 _mesa_buffer_unmap( struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
503 /* XXX we might assert here that bufObj->Pointer is non-null */
504 bufObj
->Pointer
= NULL
;
507 bufObj
->AccessFlags
= 0x0;
513 * Default fallback for \c dd_function_table::CopyBufferSubData().
514 * Called via glCopyBuffserSubData().
517 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
518 struct gl_buffer_object
*src
,
519 struct gl_buffer_object
*dst
,
520 GLintptr readOffset
, GLintptr writeOffset
,
523 GLubyte
*srcPtr
, *dstPtr
;
525 /* the buffers should not be mapped */
526 assert(!_mesa_bufferobj_mapped(src
));
527 assert(!_mesa_bufferobj_mapped(dst
));
530 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
532 GL_MAP_WRITE_BIT
, src
);
537 srcPtr
+= readOffset
;
538 dstPtr
+= writeOffset
;
540 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
541 GL_MAP_READ_BIT
, src
);
542 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
544 GL_MAP_INVALIDATE_RANGE_BIT
), dst
);
547 /* Note: the src and dst regions will never overlap. Trying to do so
548 * would generate GL_INVALID_VALUE earlier.
550 if (srcPtr
&& dstPtr
)
551 memcpy(dstPtr
, srcPtr
, size
);
553 ctx
->Driver
.UnmapBuffer(ctx
, src
);
555 ctx
->Driver
.UnmapBuffer(ctx
, dst
);
561 * Initialize the state associated with buffer objects
564 _mesa_init_buffer_objects( struct gl_context
*ctx
)
566 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
567 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
568 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
570 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
571 ctx
->Shared
->NullBufferObj
);
573 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
574 ctx
->Shared
->NullBufferObj
);
575 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
576 ctx
->Shared
->NullBufferObj
);
581 _mesa_free_buffer_objects( struct gl_context
*ctx
)
583 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
585 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
586 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
591 * Bind the specified target to buffer for the specified context.
592 * Called by glBindBuffer() and other functions.
595 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
597 struct gl_buffer_object
*oldBufObj
;
598 struct gl_buffer_object
*newBufObj
= NULL
;
599 struct gl_buffer_object
**bindTarget
= NULL
;
601 bindTarget
= get_buffer_target(ctx
, target
);
603 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
607 /* Get pointer to old buffer object (to be unbound) */
608 oldBufObj
= *bindTarget
;
609 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
610 return; /* rebinding the same buffer object- no change */
613 * Get pointer to new buffer object (newBufObj)
616 /* The spec says there's not a buffer object named 0, but we use
617 * one internally because it simplifies things.
619 newBufObj
= ctx
->Shared
->NullBufferObj
;
622 /* non-default buffer object */
623 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
624 if (!newBufObj
|| newBufObj
== &DummyBufferObject
) {
625 /* If this is a new buffer object id, or one which was generated but
626 * never used before, allocate a buffer object now.
628 ASSERT(ctx
->Driver
.NewBufferObject
);
629 newBufObj
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
631 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
634 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, newBufObj
);
638 /* bind new buffer */
639 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
641 /* Pass BindBuffer call to device driver */
642 if (ctx
->Driver
.BindBuffer
)
643 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
648 * Update the default buffer objects in the given context to reference those
649 * specified in the shared state and release those referencing the old
653 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
655 /* Bind the NullBufferObj to remove references to those
656 * in the shared context hash table.
658 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
659 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
660 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
661 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
667 * Return the gl_buffer_object for the given ID.
668 * Always return NULL for ID 0.
670 struct gl_buffer_object
*
671 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
676 return (struct gl_buffer_object
*)
677 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
682 * If *ptr points to obj, set ptr = the Null/default buffer object.
683 * This is a helper for buffer object deletion.
684 * The GL spec says that deleting a buffer object causes it to get
685 * unbound from all arrays in the current context.
688 unbind(struct gl_context
*ctx
,
689 struct gl_buffer_object
**ptr
,
690 struct gl_buffer_object
*obj
)
693 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
699 * Plug default/fallback buffer object functions into the device
703 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
705 /* GL_ARB_vertex/pixel_buffer_object */
706 driver
->NewBufferObject
= _mesa_new_buffer_object
;
707 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
708 driver
->BindBuffer
= NULL
;
709 driver
->BufferData
= _mesa_buffer_data
;
710 driver
->BufferSubData
= _mesa_buffer_subdata
;
711 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
712 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
714 /* GL_ARB_map_buffer_range */
715 driver
->MapBufferRange
= _mesa_buffer_map_range
;
716 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
718 /* GL_ARB_copy_buffer */
719 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
724 /**********************************************************************/
726 /**********************************************************************/
729 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
731 GET_CURRENT_CONTEXT(ctx
);
732 ASSERT_OUTSIDE_BEGIN_END(ctx
);
734 if (MESA_VERBOSE
& VERBOSE_API
)
735 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
736 _mesa_lookup_enum_by_nr(target
), buffer
);
738 bind_buffer_object(ctx
, target
, buffer
);
743 * Delete a set of buffer objects.
745 * \param n Number of buffer objects to delete.
746 * \param ids Array of \c n buffer object IDs.
749 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
751 GET_CURRENT_CONTEXT(ctx
);
753 ASSERT_OUTSIDE_BEGIN_END(ctx
);
754 FLUSH_VERTICES(ctx
, 0);
757 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
761 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
763 for (i
= 0; i
< n
; i
++) {
764 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
766 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
769 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
771 if (_mesa_bufferobj_mapped(bufObj
)) {
772 /* if mapped, unmap it now */
773 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
774 bufObj
->AccessFlags
= default_access_mode(ctx
);
775 bufObj
->Pointer
= NULL
;
778 /* unbind any vertex pointers bound to this buffer */
779 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
780 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
783 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
784 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
786 if (arrayObj
->ElementArrayBufferObj
== bufObj
) {
787 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
790 /* unbind any pixel pack/unpack pointers bound to this buffer */
791 if (ctx
->Pack
.BufferObj
== bufObj
) {
792 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
794 if (ctx
->Unpack
.BufferObj
== bufObj
) {
795 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
798 /* The ID is immediately freed for re-use */
799 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
800 /* Make sure we do not run into the classic ABA problem on bind.
801 * We don't want to allow re-binding a buffer object that's been
802 * "deleted" by glDeleteBuffers().
804 * The explicit rebinding to the default object in the current context
805 * prevents the above in the current context, but another context
806 * sharing the same objects might suffer from this problem.
807 * The alternative would be to do the hash lookup in any case on bind
808 * which would introduce more runtime overhead than this.
810 bufObj
->DeletePending
= GL_TRUE
;
811 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
815 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
820 * Generate a set of unique buffer object IDs and store them in \c buffer.
822 * \param n Number of IDs to generate.
823 * \param buffer Array of \c n locations to store the IDs.
826 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
828 GET_CURRENT_CONTEXT(ctx
);
831 ASSERT_OUTSIDE_BEGIN_END(ctx
);
833 if (MESA_VERBOSE
& VERBOSE_API
)
834 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
837 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
846 * This must be atomic (generation and allocation of buffer object IDs)
848 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
850 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
852 /* Insert the ID and pointer to dummy buffer object into hash table */
853 for (i
= 0; i
< n
; i
++) {
854 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
856 buffer
[i
] = first
+ i
;
859 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
864 * Determine if ID is the name of a buffer object.
866 * \param id ID of the potential buffer object.
867 * \return \c GL_TRUE if \c id is the name of a buffer object,
868 * \c GL_FALSE otherwise.
871 _mesa_IsBufferARB(GLuint id
)
873 struct gl_buffer_object
*bufObj
;
874 GET_CURRENT_CONTEXT(ctx
);
875 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
877 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
878 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
879 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
881 return bufObj
&& bufObj
!= &DummyBufferObject
;
886 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
887 const GLvoid
* data
, GLenum usage
)
889 GET_CURRENT_CONTEXT(ctx
);
890 struct gl_buffer_object
*bufObj
;
891 ASSERT_OUTSIDE_BEGIN_END(ctx
);
893 if (MESA_VERBOSE
& VERBOSE_API
)
894 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
895 _mesa_lookup_enum_by_nr(target
),
896 (long int) size
, data
,
897 _mesa_lookup_enum_by_nr(usage
));
900 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
905 case GL_STREAM_DRAW_ARB
:
906 case GL_STREAM_READ_ARB
:
907 case GL_STREAM_COPY_ARB
:
908 case GL_STATIC_DRAW_ARB
:
909 case GL_STATIC_READ_ARB
:
910 case GL_STATIC_COPY_ARB
:
911 case GL_DYNAMIC_DRAW_ARB
:
912 case GL_DYNAMIC_READ_ARB
:
913 case GL_DYNAMIC_COPY_ARB
:
917 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(usage)");
921 bufObj
= get_buffer(ctx
, target
);
923 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(target)" );
926 if (!_mesa_is_bufferobj(bufObj
)) {
927 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBufferDataARB(buffer 0)" );
931 if (_mesa_bufferobj_mapped(bufObj
)) {
932 /* Unmap the existing buffer. We'll replace it now. Not an error. */
933 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
934 bufObj
->AccessFlags
= default_access_mode(ctx
);
935 ASSERT(bufObj
->Pointer
== NULL
);
938 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
940 bufObj
->Written
= GL_TRUE
;
943 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
944 bufObj
->Name
, size
, data
, usage
);
951 ASSERT(ctx
->Driver
.BufferData
);
952 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
953 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
959 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
960 GLsizeiptrARB size
, const GLvoid
* data
)
962 GET_CURRENT_CONTEXT(ctx
);
963 struct gl_buffer_object
*bufObj
;
964 ASSERT_OUTSIDE_BEGIN_END(ctx
);
966 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
967 "glBufferSubDataARB" );
969 /* error already recorded */
976 bufObj
->Written
= GL_TRUE
;
978 ASSERT(ctx
->Driver
.BufferSubData
);
979 ctx
->Driver
.BufferSubData( ctx
, offset
, size
, data
, bufObj
);
984 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
985 GLsizeiptrARB size
, void * data
)
987 GET_CURRENT_CONTEXT(ctx
);
988 struct gl_buffer_object
*bufObj
;
989 ASSERT_OUTSIDE_BEGIN_END(ctx
);
991 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
992 "glGetBufferSubDataARB" );
994 /* error already recorded */
998 ASSERT(ctx
->Driver
.GetBufferSubData
);
999 ctx
->Driver
.GetBufferSubData( ctx
, offset
, size
, data
, bufObj
);
1004 _mesa_MapBufferARB(GLenum target
, GLenum access
)
1006 GET_CURRENT_CONTEXT(ctx
);
1007 struct gl_buffer_object
* bufObj
;
1008 GLbitfield accessFlags
;
1011 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1014 case GL_READ_ONLY_ARB
:
1015 accessFlags
= GL_MAP_READ_BIT
;
1017 case GL_WRITE_ONLY_ARB
:
1018 accessFlags
= GL_MAP_WRITE_BIT
;
1020 case GL_READ_WRITE_ARB
:
1021 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1024 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1028 bufObj
= get_buffer(ctx
, target
);
1030 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(target)" );
1033 if (!_mesa_is_bufferobj(bufObj
)) {
1034 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(buffer 0)" );
1037 if (_mesa_bufferobj_mapped(bufObj
)) {
1038 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1042 if (!bufObj
->Size
) {
1043 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1044 "glMapBuffer(buffer size = 0)");
1048 ASSERT(ctx
->Driver
.MapBufferRange
);
1049 map
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
, accessFlags
, bufObj
);
1051 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1055 /* The driver callback should have set these fields.
1056 * This is important because other modules (like VBO) might call
1057 * the driver function directly.
1059 ASSERT(bufObj
->Pointer
== map
);
1060 ASSERT(bufObj
->Length
== bufObj
->Size
);
1061 ASSERT(bufObj
->Offset
== 0);
1062 bufObj
->AccessFlags
= accessFlags
;
1065 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1066 bufObj
->Written
= GL_TRUE
;
1069 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1070 bufObj
->Name
, bufObj
->Size
, access
);
1071 if (access
== GL_WRITE_ONLY_ARB
) {
1073 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1074 for (i
= 0; i
< bufObj
->Size
; i
++)
1081 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1083 /* buffer is 100 bytes larger than requested, fill with magic value */
1084 for (i
= 0; i
< 100; i
++) {
1085 buf
[bufObj
->Size
- i
- 1] = 123;
1090 return bufObj
->Pointer
;
1094 GLboolean GLAPIENTRY
1095 _mesa_UnmapBufferARB(GLenum target
)
1097 GET_CURRENT_CONTEXT(ctx
);
1098 struct gl_buffer_object
*bufObj
;
1099 GLboolean status
= GL_TRUE
;
1100 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1102 bufObj
= get_buffer(ctx
, target
);
1104 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1107 if (!_mesa_is_bufferobj(bufObj
)) {
1108 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1111 if (!_mesa_bufferobj_mapped(bufObj
)) {
1112 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1117 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1118 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1120 /* check that last 100 bytes are still = magic value */
1121 for (i
= 0; i
< 100; i
++) {
1122 GLuint pos
= bufObj
->Size
- i
- 1;
1123 if (buf
[pos
] != 123) {
1124 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1125 " at position %d (value = %u)\n",
1133 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1134 GLuint i
, unchanged
= 0;
1135 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1137 /* check which bytes changed */
1138 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1139 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1146 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1147 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1152 status
= ctx
->Driver
.UnmapBuffer( ctx
, bufObj
);
1153 bufObj
->AccessFlags
= default_access_mode(ctx
);
1154 ASSERT(bufObj
->Pointer
== NULL
);
1155 ASSERT(bufObj
->Offset
== 0);
1156 ASSERT(bufObj
->Length
== 0);
1163 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1165 GET_CURRENT_CONTEXT(ctx
);
1166 struct gl_buffer_object
*bufObj
;
1167 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1169 bufObj
= get_buffer(ctx
, target
);
1171 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1174 if (!_mesa_is_bufferobj(bufObj
)) {
1175 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1180 case GL_BUFFER_SIZE_ARB
:
1181 *params
= (GLint
) bufObj
->Size
;
1183 case GL_BUFFER_USAGE_ARB
:
1184 *params
= bufObj
->Usage
;
1186 case GL_BUFFER_ACCESS_ARB
:
1187 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1189 case GL_BUFFER_MAPPED_ARB
:
1190 *params
= _mesa_bufferobj_mapped(bufObj
);
1192 case GL_BUFFER_ACCESS_FLAGS
:
1193 if (ctx
->VersionMajor
< 3)
1195 *params
= bufObj
->AccessFlags
;
1197 case GL_BUFFER_MAP_OFFSET
:
1198 if (ctx
->VersionMajor
< 3)
1200 *params
= (GLint
) bufObj
->Offset
;
1202 case GL_BUFFER_MAP_LENGTH
:
1203 if (ctx
->VersionMajor
< 3)
1205 *params
= (GLint
) bufObj
->Length
;
1208 ; /* fall-through */
1212 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1213 _mesa_lookup_enum_by_nr(pname
));
1219 * This is pretty much a duplicate of GetBufferParameteriv() but the
1220 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1223 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1225 GET_CURRENT_CONTEXT(ctx
);
1226 struct gl_buffer_object
*bufObj
;
1227 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1229 bufObj
= get_buffer(ctx
, target
);
1231 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1234 if (!_mesa_is_bufferobj(bufObj
)) {
1235 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1240 case GL_BUFFER_SIZE_ARB
:
1241 *params
= bufObj
->Size
;
1243 case GL_BUFFER_USAGE_ARB
:
1244 *params
= bufObj
->Usage
;
1246 case GL_BUFFER_ACCESS_ARB
:
1247 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1249 case GL_BUFFER_ACCESS_FLAGS
:
1250 if (ctx
->VersionMajor
< 3)
1252 *params
= bufObj
->AccessFlags
;
1254 case GL_BUFFER_MAPPED_ARB
:
1255 *params
= _mesa_bufferobj_mapped(bufObj
);
1257 case GL_BUFFER_MAP_OFFSET
:
1258 if (ctx
->VersionMajor
< 3)
1260 *params
= bufObj
->Offset
;
1262 case GL_BUFFER_MAP_LENGTH
:
1263 if (ctx
->VersionMajor
< 3)
1265 *params
= bufObj
->Length
;
1268 ; /* fall-through */
1272 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1273 _mesa_lookup_enum_by_nr(pname
));
1278 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1280 GET_CURRENT_CONTEXT(ctx
);
1281 struct gl_buffer_object
* bufObj
;
1282 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1284 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1285 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1289 bufObj
= get_buffer(ctx
, target
);
1291 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1294 if (!_mesa_is_bufferobj(bufObj
)) {
1295 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1299 *params
= bufObj
->Pointer
;
1304 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1305 GLintptr readOffset
, GLintptr writeOffset
,
1308 GET_CURRENT_CONTEXT(ctx
);
1309 struct gl_buffer_object
*src
, *dst
;
1310 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1312 src
= get_buffer(ctx
, readTarget
);
1313 if (!_mesa_is_bufferobj(src
)) {
1314 _mesa_error(ctx
, GL_INVALID_ENUM
,
1315 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1319 dst
= get_buffer(ctx
, writeTarget
);
1320 if (!_mesa_is_bufferobj(dst
)) {
1321 _mesa_error(ctx
, GL_INVALID_ENUM
,
1322 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1326 if (_mesa_bufferobj_mapped(src
)) {
1327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1328 "glCopyBuffserSubData(readBuffer is mapped)");
1332 if (_mesa_bufferobj_mapped(dst
)) {
1333 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1334 "glCopyBuffserSubData(writeBuffer is mapped)");
1338 if (readOffset
< 0) {
1339 _mesa_error(ctx
, GL_INVALID_VALUE
,
1340 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1344 if (writeOffset
< 0) {
1345 _mesa_error(ctx
, GL_INVALID_VALUE
,
1346 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1350 if (readOffset
+ size
> src
->Size
) {
1351 _mesa_error(ctx
, GL_INVALID_VALUE
,
1352 "glCopyBuffserSubData(readOffset + size = %d)",
1353 (int) (readOffset
+ size
));
1357 if (writeOffset
+ size
> dst
->Size
) {
1358 _mesa_error(ctx
, GL_INVALID_VALUE
,
1359 "glCopyBuffserSubData(writeOffset + size = %d)",
1360 (int) (writeOffset
+ size
));
1365 if (readOffset
+ size
<= writeOffset
) {
1368 else if (writeOffset
+ size
<= readOffset
) {
1372 /* overlapping src/dst is illegal */
1373 _mesa_error(ctx
, GL_INVALID_VALUE
,
1374 "glCopyBuffserSubData(overlapping src/dst)");
1379 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1384 * See GL_ARB_map_buffer_range spec
1387 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1390 GET_CURRENT_CONTEXT(ctx
);
1391 struct gl_buffer_object
*bufObj
;
1394 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1396 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1397 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1398 "glMapBufferRange(extension not supported)");
1403 _mesa_error(ctx
, GL_INVALID_VALUE
,
1404 "glMapBufferRange(offset = %ld)", (long)offset
);
1409 _mesa_error(ctx
, GL_INVALID_VALUE
,
1410 "glMapBufferRange(length = %ld)", (long)length
);
1414 if (access
& ~(GL_MAP_READ_BIT
|
1416 GL_MAP_INVALIDATE_RANGE_BIT
|
1417 GL_MAP_INVALIDATE_BUFFER_BIT
|
1418 GL_MAP_FLUSH_EXPLICIT_BIT
|
1419 GL_MAP_UNSYNCHRONIZED_BIT
)) {
1420 /* generate an error if any undefind bit is set */
1421 _mesa_error(ctx
, GL_INVALID_VALUE
, "glMapBufferRange(access)");
1425 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1426 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1427 "glMapBufferRange(access indicates neither read or write)");
1431 if ((access
& GL_MAP_READ_BIT
) &&
1432 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
1433 GL_MAP_INVALIDATE_BUFFER_BIT
|
1434 GL_MAP_UNSYNCHRONIZED_BIT
))) {
1435 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1436 "glMapBufferRange(invalid access flags)");
1440 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1441 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1442 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1443 "glMapBufferRange(invalid access flags)");
1447 bufObj
= get_buffer(ctx
, target
);
1448 if (!_mesa_is_bufferobj(bufObj
)) {
1449 _mesa_error(ctx
, GL_INVALID_ENUM
,
1450 "glMapBufferRange(target = 0x%x)", target
);
1454 if (offset
+ length
> bufObj
->Size
) {
1455 _mesa_error(ctx
, GL_INVALID_VALUE
,
1456 "glMapBufferRange(offset + length > size)");
1460 if (_mesa_bufferobj_mapped(bufObj
)) {
1461 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1462 "glMapBufferRange(buffer already mapped)");
1466 if (!bufObj
->Size
) {
1467 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1468 "glMapBufferRange(buffer size = 0)");
1472 /* Mapping zero bytes should return a non-null pointer. */
1474 static long dummy
= 0;
1475 bufObj
->Pointer
= &dummy
;
1476 bufObj
->Length
= length
;
1477 bufObj
->Offset
= offset
;
1478 bufObj
->AccessFlags
= access
;
1479 return bufObj
->Pointer
;
1482 ASSERT(ctx
->Driver
.MapBufferRange
);
1483 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
);
1485 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1488 /* The driver callback should have set all these fields.
1489 * This is important because other modules (like VBO) might call
1490 * the driver function directly.
1492 ASSERT(bufObj
->Pointer
== map
);
1493 ASSERT(bufObj
->Length
== length
);
1494 ASSERT(bufObj
->Offset
== offset
);
1495 ASSERT(bufObj
->AccessFlags
== access
);
1503 * See GL_ARB_map_buffer_range spec
1506 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1508 GET_CURRENT_CONTEXT(ctx
);
1509 struct gl_buffer_object
*bufObj
;
1510 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1512 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1513 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1514 "glMapBufferRange(extension not supported)");
1519 _mesa_error(ctx
, GL_INVALID_VALUE
,
1520 "glMapBufferRange(offset = %ld)", (long)offset
);
1525 _mesa_error(ctx
, GL_INVALID_VALUE
,
1526 "glMapBufferRange(length = %ld)", (long)length
);
1530 bufObj
= get_buffer(ctx
, target
);
1532 _mesa_error(ctx
, GL_INVALID_ENUM
,
1533 "glMapBufferRange(target = 0x%x)", target
);
1537 if (!_mesa_is_bufferobj(bufObj
)) {
1538 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1539 "glMapBufferRange(current buffer is 0)");
1543 if (!_mesa_bufferobj_mapped(bufObj
)) {
1544 /* buffer is not mapped */
1545 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1546 "glMapBufferRange(buffer is not mapped)");
1550 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1551 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1552 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1556 if (offset
+ length
> bufObj
->Length
) {
1557 _mesa_error(ctx
, GL_INVALID_VALUE
,
1558 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1559 (long)offset
, (long)length
, (long)bufObj
->Length
);
1563 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1565 if (ctx
->Driver
.FlushMappedBufferRange
)
1566 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
);
1570 #if FEATURE_APPLE_object_purgeable
1572 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1574 struct gl_buffer_object
*bufObj
;
1577 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1579 _mesa_error(ctx
, GL_INVALID_VALUE
,
1580 "glObjectPurgeable(name = 0x%x)", name
);
1583 if (!_mesa_is_bufferobj(bufObj
)) {
1584 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1588 if (bufObj
->Purgeable
) {
1589 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1590 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1591 return GL_VOLATILE_APPLE
;
1594 bufObj
->Purgeable
= GL_TRUE
;
1596 retval
= GL_VOLATILE_APPLE
;
1597 if (ctx
->Driver
.BufferObjectPurgeable
)
1598 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1605 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1607 struct gl_renderbuffer
*bufObj
;
1610 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1612 _mesa_error(ctx
, GL_INVALID_VALUE
,
1613 "glObjectUnpurgeable(name = 0x%x)", name
);
1617 if (bufObj
->Purgeable
) {
1618 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1619 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1620 return GL_VOLATILE_APPLE
;
1623 bufObj
->Purgeable
= GL_TRUE
;
1625 retval
= GL_VOLATILE_APPLE
;
1626 if (ctx
->Driver
.RenderObjectPurgeable
)
1627 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1634 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1636 struct gl_texture_object
*bufObj
;
1639 bufObj
= _mesa_lookup_texture(ctx
, name
);
1641 _mesa_error(ctx
, GL_INVALID_VALUE
,
1642 "glObjectPurgeable(name = 0x%x)", name
);
1646 if (bufObj
->Purgeable
) {
1647 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1648 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1649 return GL_VOLATILE_APPLE
;
1652 bufObj
->Purgeable
= GL_TRUE
;
1654 retval
= GL_VOLATILE_APPLE
;
1655 if (ctx
->Driver
.TextureObjectPurgeable
)
1656 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1663 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1667 GET_CURRENT_CONTEXT(ctx
);
1668 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1671 _mesa_error(ctx
, GL_INVALID_VALUE
,
1672 "glObjectPurgeable(name = 0x%x)", name
);
1677 case GL_VOLATILE_APPLE
:
1678 case GL_RELEASED_APPLE
:
1682 _mesa_error(ctx
, GL_INVALID_ENUM
,
1683 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1688 switch (objectType
) {
1690 retval
= texture_object_purgeable(ctx
, name
, option
);
1692 case GL_RENDERBUFFER_EXT
:
1693 retval
= renderbuffer_purgeable(ctx
, name
, option
);
1695 case GL_BUFFER_OBJECT_APPLE
:
1696 retval
= buffer_object_purgeable(ctx
, name
, option
);
1699 _mesa_error(ctx
, GL_INVALID_ENUM
,
1700 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1705 /* In strict conformance to the spec, we must only return VOLATILE when
1706 * when passed the VOLATILE option. Madness.
1708 * XXX First fix the spec, then fix me.
1710 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1715 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1717 struct gl_buffer_object
*bufObj
;
1720 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1722 _mesa_error(ctx
, GL_INVALID_VALUE
,
1723 "glObjectUnpurgeable(name = 0x%x)", name
);
1727 if (! bufObj
->Purgeable
) {
1728 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1729 "glObjectUnpurgeable(name = 0x%x) object is "
1730 " already \"unpurged\"", name
);
1734 bufObj
->Purgeable
= GL_FALSE
;
1737 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1738 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1745 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1747 struct gl_renderbuffer
*bufObj
;
1750 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1752 _mesa_error(ctx
, GL_INVALID_VALUE
,
1753 "glObjectUnpurgeable(name = 0x%x)", name
);
1757 if (! bufObj
->Purgeable
) {
1758 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1759 "glObjectUnpurgeable(name = 0x%x) object is "
1760 " already \"unpurged\"", name
);
1764 bufObj
->Purgeable
= GL_FALSE
;
1767 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1768 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1775 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1777 struct gl_texture_object
*bufObj
;
1780 bufObj
= _mesa_lookup_texture(ctx
, name
);
1782 _mesa_error(ctx
, GL_INVALID_VALUE
,
1783 "glObjectUnpurgeable(name = 0x%x)", name
);
1787 if (! bufObj
->Purgeable
) {
1788 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1789 "glObjectUnpurgeable(name = 0x%x) object is"
1790 " already \"unpurged\"", name
);
1794 bufObj
->Purgeable
= GL_FALSE
;
1797 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1798 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1805 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1807 GET_CURRENT_CONTEXT(ctx
);
1808 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1811 _mesa_error(ctx
, GL_INVALID_VALUE
,
1812 "glObjectUnpurgeable(name = 0x%x)", name
);
1817 case GL_RETAINED_APPLE
:
1818 case GL_UNDEFINED_APPLE
:
1822 _mesa_error(ctx
, GL_INVALID_ENUM
,
1823 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1828 switch (objectType
) {
1829 case GL_BUFFER_OBJECT_APPLE
:
1830 return buffer_object_unpurgeable(ctx
, name
, option
);
1832 return texture_object_unpurgeable(ctx
, name
, option
);
1833 case GL_RENDERBUFFER_EXT
:
1834 return renderbuffer_unpurgeable(ctx
, name
, option
);
1836 _mesa_error(ctx
, GL_INVALID_ENUM
,
1837 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1845 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1846 GLenum pname
, GLint
*params
)
1848 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1850 _mesa_error(ctx
, GL_INVALID_VALUE
,
1851 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1856 case GL_PURGEABLE_APPLE
:
1857 *params
= bufObj
->Purgeable
;
1860 _mesa_error(ctx
, GL_INVALID_ENUM
,
1861 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1869 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
1870 GLenum pname
, GLint
*params
)
1872 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
1874 _mesa_error(ctx
, GL_INVALID_VALUE
,
1875 "glObjectUnpurgeable(name = 0x%x)", name
);
1880 case GL_PURGEABLE_APPLE
:
1881 *params
= rb
->Purgeable
;
1884 _mesa_error(ctx
, GL_INVALID_ENUM
,
1885 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1893 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1894 GLenum pname
, GLint
*params
)
1896 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
1898 _mesa_error(ctx
, GL_INVALID_VALUE
,
1899 "glObjectUnpurgeable(name = 0x%x)", name
);
1904 case GL_PURGEABLE_APPLE
:
1905 *params
= texObj
->Purgeable
;
1908 _mesa_error(ctx
, GL_INVALID_ENUM
,
1909 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1917 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
1920 GET_CURRENT_CONTEXT(ctx
);
1923 _mesa_error(ctx
, GL_INVALID_VALUE
,
1924 "glGetObjectParameteriv(name = 0x%x)", name
);
1928 switch (objectType
) {
1930 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
1932 case GL_BUFFER_OBJECT_APPLE
:
1933 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
1935 case GL_RENDERBUFFER_EXT
:
1936 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
1939 _mesa_error(ctx
, GL_INVALID_ENUM
,
1940 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1945 #endif /* FEATURE_APPLE_object_purgeable */