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
,
220 struct gl_buffer_object
*bufObj
)
227 /* assign strange values here to help w/ debugging */
228 bufObj
->RefCount
= -1000;
231 _glthread_DESTROY_MUTEX(bufObj
->Mutex
);
238 * Set ptr to bufObj w/ reference counting.
241 _mesa_reference_buffer_object(struct gl_context
*ctx
,
242 struct gl_buffer_object
**ptr
,
243 struct gl_buffer_object
*bufObj
)
249 /* Unreference the old buffer */
250 GLboolean deleteFlag
= GL_FALSE
;
251 struct gl_buffer_object
*oldObj
= *ptr
;
253 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
254 ASSERT(oldObj
->RefCount
> 0);
257 printf("BufferObj %p %d DECR to %d\n",
258 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
260 deleteFlag
= (oldObj
->RefCount
== 0);
261 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
265 /* some sanity checking: don't delete a buffer still in use */
267 /* unfortunately, these tests are invalid during context tear-down */
268 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
269 ASSERT(ctx
->Array
.ElementArrayBufferObj
!= bufObj
);
270 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
273 ASSERT(ctx
->Driver
.DeleteBuffer
);
274 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
282 /* reference new buffer */
283 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
284 if (bufObj
->RefCount
== 0) {
285 /* this buffer's being deleted (look just above) */
286 /* Not sure this can every really happen. Warn if it does. */
287 _mesa_problem(NULL
, "referencing deleted buffer object");
293 printf("BufferObj %p %d INCR to %d\n",
294 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
298 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
304 * Initialize a buffer object to default values.
307 _mesa_initialize_buffer_object( struct gl_buffer_object
*obj
,
308 GLuint name
, GLenum target
)
312 memset(obj
, 0, sizeof(struct gl_buffer_object
));
313 _glthread_INIT_MUTEX(obj
->Mutex
);
316 obj
->Usage
= GL_STATIC_DRAW_ARB
;
317 obj
->AccessFlags
= DEFAULT_ACCESS
;
322 * Allocate space for and store data in a buffer object. Any data that was
323 * previously stored in the buffer object is lost. If \c data is \c NULL,
324 * memory will be allocated, but no copy will occur.
326 * This is the default callback for \c dd_function_table::BufferData()
327 * Note that all GL error checking will have been done already.
329 * \param ctx GL context.
330 * \param target Buffer object target on which to operate.
331 * \param size Size, in bytes, of the new data store.
332 * \param data Pointer to the data to store in the buffer object. This
333 * pointer may be \c NULL.
334 * \param usage Hints about how the data will be used.
335 * \param bufObj Object to be used.
337 * \return GL_TRUE for success, GL_FALSE for failure
338 * \sa glBufferDataARB, dd_function_table::BufferData.
341 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
342 const GLvoid
* data
, GLenum usage
,
343 struct gl_buffer_object
* bufObj
)
347 (void) ctx
; (void) target
;
349 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
351 bufObj
->Data
= (GLubyte
*) new_data
;
353 bufObj
->Usage
= usage
;
356 memcpy( bufObj
->Data
, data
, size
);
368 * Replace data in a subrange of buffer object. If the data range
369 * specified by \c size + \c offset extends beyond the end of the buffer or
370 * if \c data is \c NULL, no copy is performed.
372 * This is the default callback for \c dd_function_table::BufferSubData()
373 * Note that all GL error checking will have been done already.
375 * \param ctx GL context.
376 * \param target Buffer object target on which to operate.
377 * \param offset Offset of the first byte to be modified.
378 * \param size Size, in bytes, of the data range.
379 * \param data Pointer to the data to store in the buffer object.
380 * \param bufObj Object to be used.
382 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
385 _mesa_buffer_subdata( struct gl_context
*ctx
, GLenum target
, GLintptrARB offset
,
386 GLsizeiptrARB size
, const GLvoid
* data
,
387 struct gl_buffer_object
* bufObj
)
389 (void) ctx
; (void) target
;
391 /* this should have been caught in _mesa_BufferSubData() */
392 ASSERT(size
+ offset
<= bufObj
->Size
);
395 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
401 * Retrieve data from a subrange of buffer object. If the data range
402 * specified by \c size + \c offset extends beyond the end of the buffer or
403 * if \c data is \c NULL, no copy is performed.
405 * This is the default callback for \c dd_function_table::GetBufferSubData()
406 * Note that all GL error checking will have been done already.
408 * \param ctx GL context.
409 * \param target Buffer object target on which to operate.
410 * \param offset Offset of the first byte to be fetched.
411 * \param size Size, in bytes, of the data range.
412 * \param data Destination for data
413 * \param bufObj Object to be used.
415 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
418 _mesa_buffer_get_subdata( struct gl_context
*ctx
,
419 GLenum target
, GLintptrARB offset
,
420 GLsizeiptrARB size
, GLvoid
* data
,
421 struct gl_buffer_object
* bufObj
)
423 (void) ctx
; (void) target
;
425 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
426 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
432 * Default callback for \c dd_function_tabel::MapBuffer().
434 * The function parameters will have been already tested for errors.
436 * \param ctx GL context.
437 * \param target Buffer object target on which to operate.
438 * \param access Information about how the buffer will be accessed.
439 * \param bufObj Object to be mapped.
440 * \return A pointer to the object's internal data store that can be accessed
443 * \sa glMapBufferARB, dd_function_table::MapBuffer
446 _mesa_buffer_map( struct gl_context
*ctx
, GLenum target
, GLenum access
,
447 struct gl_buffer_object
*bufObj
)
452 /* Just return a direct pointer to the data */
453 if (_mesa_bufferobj_mapped(bufObj
)) {
454 /* already mapped! */
457 bufObj
->Pointer
= bufObj
->Data
;
458 bufObj
->Length
= bufObj
->Size
;
460 return bufObj
->Pointer
;
465 * Default fallback for \c dd_function_table::MapBufferRange().
466 * Called via glMapBufferRange().
469 _mesa_buffer_map_range( struct gl_context
*ctx
, GLenum target
, GLintptr offset
,
470 GLsizeiptr length
, GLbitfield access
,
471 struct gl_buffer_object
*bufObj
)
475 assert(!_mesa_bufferobj_mapped(bufObj
));
476 /* Just return a direct pointer to the data */
477 bufObj
->Pointer
= bufObj
->Data
+ offset
;
478 bufObj
->Length
= length
;
479 bufObj
->Offset
= offset
;
480 bufObj
->AccessFlags
= access
;
481 return bufObj
->Pointer
;
486 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
487 * Called via glFlushMappedBufferRange().
490 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
, GLenum target
,
491 GLintptr offset
, GLsizeiptr length
,
492 struct gl_buffer_object
*obj
)
504 * Default callback for \c dd_function_table::MapBuffer().
506 * The input parameters will have been already tested for errors.
508 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
511 _mesa_buffer_unmap( struct gl_context
*ctx
, GLenum target
,
512 struct gl_buffer_object
*bufObj
)
516 /* XXX we might assert here that bufObj->Pointer is non-null */
517 bufObj
->Pointer
= NULL
;
520 bufObj
->AccessFlags
= 0x0;
526 * Default fallback for \c dd_function_table::CopyBufferSubData().
527 * Called via glCopyBuffserSubData().
530 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
531 struct gl_buffer_object
*src
,
532 struct gl_buffer_object
*dst
,
533 GLintptr readOffset
, GLintptr writeOffset
,
536 GLubyte
*srcPtr
, *dstPtr
;
538 /* buffer should not already be mapped */
539 assert(!_mesa_bufferobj_mapped(src
));
540 assert(!_mesa_bufferobj_mapped(dst
));
542 srcPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_READ_BUFFER
,
544 dstPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_WRITE_BUFFER
,
547 if (srcPtr
&& dstPtr
)
548 memcpy(dstPtr
+ writeOffset
, srcPtr
+ readOffset
, size
);
550 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_READ_BUFFER
, src
);
551 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_WRITE_BUFFER
, dst
);
557 * Initialize the state associated with buffer objects
560 _mesa_init_buffer_objects( struct gl_context
*ctx
)
562 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
563 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
564 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
566 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
567 ctx
->Shared
->NullBufferObj
);
568 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
,
569 ctx
->Shared
->NullBufferObj
);
571 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
572 ctx
->Shared
->NullBufferObj
);
573 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
574 ctx
->Shared
->NullBufferObj
);
579 _mesa_free_buffer_objects( struct gl_context
*ctx
)
581 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
582 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
, NULL
);
584 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
585 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
590 * Bind the specified target to buffer for the specified context.
591 * Called by glBindBuffer() and other functions.
594 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
596 struct gl_buffer_object
*oldBufObj
;
597 struct gl_buffer_object
*newBufObj
= NULL
;
598 struct gl_buffer_object
**bindTarget
= NULL
;
600 bindTarget
= get_buffer_target(ctx
, target
);
602 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
606 /* Get pointer to old buffer object (to be unbound) */
607 oldBufObj
= *bindTarget
;
608 if (oldBufObj
&& oldBufObj
->Name
== buffer
)
609 return; /* rebinding the same buffer object- no change */
612 * Get pointer to new buffer object (newBufObj)
615 /* The spec says there's not a buffer object named 0, but we use
616 * one internally because it simplifies things.
618 newBufObj
= ctx
->Shared
->NullBufferObj
;
621 /* non-default buffer object */
622 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
623 if (!newBufObj
|| newBufObj
== &DummyBufferObject
) {
624 /* If this is a new buffer object id, or one which was generated but
625 * never used before, allocate a buffer object now.
627 ASSERT(ctx
->Driver
.NewBufferObject
);
628 newBufObj
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
630 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
633 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, newBufObj
);
637 /* bind new buffer */
638 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
640 /* Pass BindBuffer call to device driver */
641 if (ctx
->Driver
.BindBuffer
)
642 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
647 * Update the default buffer objects in the given context to reference those
648 * specified in the shared state and release those referencing the old
652 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
654 /* Bind the NullBufferObj to remove references to those
655 * in the shared context hash table.
657 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
658 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
659 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
660 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
666 * Return the gl_buffer_object for the given ID.
667 * Always return NULL for ID 0.
669 struct gl_buffer_object
*
670 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
675 return (struct gl_buffer_object
*)
676 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
681 * If *ptr points to obj, set ptr = the Null/default buffer object.
682 * This is a helper for buffer object deletion.
683 * The GL spec says that deleting a buffer object causes it to get
684 * unbound from all arrays in the current context.
687 unbind(struct gl_context
*ctx
,
688 struct gl_buffer_object
**ptr
,
689 struct gl_buffer_object
*obj
)
692 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
698 * Plug default/fallback buffer object functions into the device
702 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
704 /* GL_ARB_vertex/pixel_buffer_object */
705 driver
->NewBufferObject
= _mesa_new_buffer_object
;
706 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
707 driver
->BindBuffer
= NULL
;
708 driver
->BufferData
= _mesa_buffer_data
;
709 driver
->BufferSubData
= _mesa_buffer_subdata
;
710 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
711 driver
->MapBuffer
= _mesa_buffer_map
;
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
, 0, bufObj
);
774 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
775 bufObj
->Pointer
= NULL
;
778 /* unbind any vertex pointers bound to this buffer */
779 unbind(ctx
, &arrayObj
->Vertex
.BufferObj
, bufObj
);
780 unbind(ctx
, &arrayObj
->Weight
.BufferObj
, bufObj
);
781 unbind(ctx
, &arrayObj
->Normal
.BufferObj
, bufObj
);
782 unbind(ctx
, &arrayObj
->Color
.BufferObj
, bufObj
);
783 unbind(ctx
, &arrayObj
->SecondaryColor
.BufferObj
, bufObj
);
784 unbind(ctx
, &arrayObj
->FogCoord
.BufferObj
, bufObj
);
785 unbind(ctx
, &arrayObj
->Index
.BufferObj
, bufObj
);
786 unbind(ctx
, &arrayObj
->EdgeFlag
.BufferObj
, bufObj
);
787 for (j
= 0; j
< Elements(arrayObj
->TexCoord
); j
++) {
788 unbind(ctx
, &arrayObj
->TexCoord
[j
].BufferObj
, bufObj
);
790 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
791 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
794 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
795 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
797 if (ctx
->Array
.ElementArrayBufferObj
== bufObj
) {
798 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
801 /* unbind any pixel pack/unpack pointers bound to this buffer */
802 if (ctx
->Pack
.BufferObj
== bufObj
) {
803 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
805 if (ctx
->Unpack
.BufferObj
== bufObj
) {
806 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
809 /* The ID is immediately freed for re-use */
810 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
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
, target
, bufObj
);
934 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
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
, target
, 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
, target
, 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 ASSERT(ctx
->Driver
.MapBuffer
);
1043 map
= ctx
->Driver
.MapBuffer( ctx
, target
, access
, bufObj
);
1045 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1049 /* The driver callback should have set these fields.
1050 * This is important because other modules (like VBO) might call
1051 * the driver function directly.
1053 ASSERT(bufObj
->Pointer
== map
);
1054 ASSERT(bufObj
->Length
== bufObj
->Size
);
1055 ASSERT(bufObj
->Offset
== 0);
1056 bufObj
->AccessFlags
= accessFlags
;
1059 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1060 bufObj
->Written
= GL_TRUE
;
1063 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1064 bufObj
->Name
, bufObj
->Size
, access
);
1065 if (access
== GL_WRITE_ONLY_ARB
) {
1067 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1068 for (i
= 0; i
< bufObj
->Size
; i
++)
1075 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1077 /* buffer is 100 bytes larger than requested, fill with magic value */
1078 for (i
= 0; i
< 100; i
++) {
1079 buf
[bufObj
->Size
- i
- 1] = 123;
1084 return bufObj
->Pointer
;
1088 GLboolean GLAPIENTRY
1089 _mesa_UnmapBufferARB(GLenum target
)
1091 GET_CURRENT_CONTEXT(ctx
);
1092 struct gl_buffer_object
*bufObj
;
1093 GLboolean status
= GL_TRUE
;
1094 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1096 bufObj
= get_buffer(ctx
, target
);
1098 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1101 if (!_mesa_is_bufferobj(bufObj
)) {
1102 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1105 if (!_mesa_bufferobj_mapped(bufObj
)) {
1106 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1111 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1112 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1114 /* check that last 100 bytes are still = magic value */
1115 for (i
= 0; i
< 100; i
++) {
1116 GLuint pos
= bufObj
->Size
- i
- 1;
1117 if (buf
[pos
] != 123) {
1118 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1119 " at position %d (value = %u)\n",
1127 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1128 GLuint i
, unchanged
= 0;
1129 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1131 /* check which bytes changed */
1132 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1133 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1140 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1141 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1146 status
= ctx
->Driver
.UnmapBuffer( ctx
, target
, bufObj
);
1147 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1148 ASSERT(bufObj
->Pointer
== NULL
);
1149 ASSERT(bufObj
->Offset
== 0);
1150 ASSERT(bufObj
->Length
== 0);
1157 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1159 GET_CURRENT_CONTEXT(ctx
);
1160 struct gl_buffer_object
*bufObj
;
1161 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1163 bufObj
= get_buffer(ctx
, target
);
1165 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1168 if (!_mesa_is_bufferobj(bufObj
)) {
1169 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1174 case GL_BUFFER_SIZE_ARB
:
1175 *params
= (GLint
) bufObj
->Size
;
1177 case GL_BUFFER_USAGE_ARB
:
1178 *params
= bufObj
->Usage
;
1180 case GL_BUFFER_ACCESS_ARB
:
1181 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1183 case GL_BUFFER_MAPPED_ARB
:
1184 *params
= _mesa_bufferobj_mapped(bufObj
);
1186 case GL_BUFFER_ACCESS_FLAGS
:
1187 if (ctx
->VersionMajor
< 3)
1189 *params
= bufObj
->AccessFlags
;
1191 case GL_BUFFER_MAP_OFFSET
:
1192 if (ctx
->VersionMajor
< 3)
1194 *params
= (GLint
) bufObj
->Offset
;
1196 case GL_BUFFER_MAP_LENGTH
:
1197 if (ctx
->VersionMajor
< 3)
1199 *params
= (GLint
) bufObj
->Length
;
1202 ; /* fall-through */
1206 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1207 _mesa_lookup_enum_by_nr(pname
));
1213 * This is pretty much a duplicate of GetBufferParameteriv() but the
1214 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1217 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1219 GET_CURRENT_CONTEXT(ctx
);
1220 struct gl_buffer_object
*bufObj
;
1221 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1223 bufObj
= get_buffer(ctx
, target
);
1225 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1228 if (!_mesa_is_bufferobj(bufObj
)) {
1229 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1234 case GL_BUFFER_SIZE_ARB
:
1235 *params
= bufObj
->Size
;
1237 case GL_BUFFER_USAGE_ARB
:
1238 *params
= bufObj
->Usage
;
1240 case GL_BUFFER_ACCESS_ARB
:
1241 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1243 case GL_BUFFER_ACCESS_FLAGS
:
1244 if (ctx
->VersionMajor
< 3)
1246 *params
= bufObj
->AccessFlags
;
1248 case GL_BUFFER_MAPPED_ARB
:
1249 *params
= _mesa_bufferobj_mapped(bufObj
);
1251 case GL_BUFFER_MAP_OFFSET
:
1252 if (ctx
->VersionMajor
< 3)
1254 *params
= bufObj
->Offset
;
1256 case GL_BUFFER_MAP_LENGTH
:
1257 if (ctx
->VersionMajor
< 3)
1259 *params
= bufObj
->Length
;
1262 ; /* fall-through */
1266 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1267 _mesa_lookup_enum_by_nr(pname
));
1272 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1274 GET_CURRENT_CONTEXT(ctx
);
1275 struct gl_buffer_object
* bufObj
;
1276 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1278 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1279 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1283 bufObj
= get_buffer(ctx
, target
);
1285 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1288 if (!_mesa_is_bufferobj(bufObj
)) {
1289 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1293 *params
= bufObj
->Pointer
;
1298 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1299 GLintptr readOffset
, GLintptr writeOffset
,
1302 GET_CURRENT_CONTEXT(ctx
);
1303 struct gl_buffer_object
*src
, *dst
;
1304 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1306 src
= get_buffer(ctx
, readTarget
);
1307 if (!src
|| !_mesa_is_bufferobj(src
)) {
1308 _mesa_error(ctx
, GL_INVALID_ENUM
,
1309 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1313 dst
= get_buffer(ctx
, writeTarget
);
1314 if (!dst
|| !_mesa_is_bufferobj(dst
)) {
1315 _mesa_error(ctx
, GL_INVALID_ENUM
,
1316 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1320 if (_mesa_bufferobj_mapped(src
)) {
1321 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1322 "glCopyBuffserSubData(readBuffer is mapped)");
1326 if (_mesa_bufferobj_mapped(dst
)) {
1327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1328 "glCopyBuffserSubData(writeBuffer is mapped)");
1332 if (readOffset
< 0) {
1333 _mesa_error(ctx
, GL_INVALID_VALUE
,
1334 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1338 if (writeOffset
< 0) {
1339 _mesa_error(ctx
, GL_INVALID_VALUE
,
1340 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1344 if (readOffset
+ size
> src
->Size
) {
1345 _mesa_error(ctx
, GL_INVALID_VALUE
,
1346 "glCopyBuffserSubData(readOffset + size = %d)",
1347 (int) (readOffset
+ size
));
1351 if (writeOffset
+ size
> dst
->Size
) {
1352 _mesa_error(ctx
, GL_INVALID_VALUE
,
1353 "glCopyBuffserSubData(writeOffset + size = %d)",
1354 (int) (writeOffset
+ size
));
1359 if (readOffset
+ size
<= writeOffset
) {
1362 else if (writeOffset
+ size
<= readOffset
) {
1366 /* overlapping src/dst is illegal */
1367 _mesa_error(ctx
, GL_INVALID_VALUE
,
1368 "glCopyBuffserSubData(overlapping src/dst)");
1373 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1378 * See GL_ARB_map_buffer_range spec
1381 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1384 GET_CURRENT_CONTEXT(ctx
);
1385 struct gl_buffer_object
*bufObj
;
1388 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1390 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1391 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1392 "glMapBufferRange(extension not supported)");
1397 _mesa_error(ctx
, GL_INVALID_VALUE
,
1398 "glMapBufferRange(offset = %ld)", (long)offset
);
1403 _mesa_error(ctx
, GL_INVALID_VALUE
,
1404 "glMapBufferRange(length = %ld)", (long)length
);
1408 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1409 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1410 "glMapBufferRange(access indicates neither read or write)");
1414 if (access
& GL_MAP_READ_BIT
) {
1415 if ((access
& GL_MAP_INVALIDATE_RANGE_BIT
) ||
1416 (access
& GL_MAP_INVALIDATE_BUFFER_BIT
) ||
1417 (access
& GL_MAP_UNSYNCHRONIZED_BIT
)) {
1418 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1419 "glMapBufferRange(invalid access flags)");
1424 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1425 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1426 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1427 "glMapBufferRange(invalid access flags)");
1431 bufObj
= get_buffer(ctx
, target
);
1432 if (!bufObj
|| !_mesa_is_bufferobj(bufObj
)) {
1433 _mesa_error(ctx
, GL_INVALID_ENUM
,
1434 "glMapBufferRange(target = 0x%x)", target
);
1438 if (offset
+ length
> bufObj
->Size
) {
1439 _mesa_error(ctx
, GL_INVALID_VALUE
,
1440 "glMapBufferRange(offset + length > size)");
1444 if (_mesa_bufferobj_mapped(bufObj
)) {
1445 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1446 "glMapBufferRange(buffer already mapped)");
1450 ASSERT(ctx
->Driver
.MapBufferRange
);
1451 map
= ctx
->Driver
.MapBufferRange(ctx
, target
, offset
, length
,
1454 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1457 /* The driver callback should have set all these fields.
1458 * This is important because other modules (like VBO) might call
1459 * the driver function directly.
1461 ASSERT(bufObj
->Pointer
== map
);
1462 ASSERT(bufObj
->Length
== length
);
1463 ASSERT(bufObj
->Offset
== offset
);
1464 ASSERT(bufObj
->AccessFlags
== access
);
1472 * See GL_ARB_map_buffer_range spec
1475 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1477 GET_CURRENT_CONTEXT(ctx
);
1478 struct gl_buffer_object
*bufObj
;
1479 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1481 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1482 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1483 "glMapBufferRange(extension not supported)");
1488 _mesa_error(ctx
, GL_INVALID_VALUE
,
1489 "glMapBufferRange(offset = %ld)", (long)offset
);
1494 _mesa_error(ctx
, GL_INVALID_VALUE
,
1495 "glMapBufferRange(length = %ld)", (long)length
);
1499 bufObj
= get_buffer(ctx
, target
);
1501 _mesa_error(ctx
, GL_INVALID_ENUM
,
1502 "glMapBufferRange(target = 0x%x)", target
);
1506 if (!_mesa_is_bufferobj(bufObj
)) {
1507 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1508 "glMapBufferRange(current buffer is 0)");
1512 if (!_mesa_bufferobj_mapped(bufObj
)) {
1513 /* buffer is not mapped */
1514 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1515 "glMapBufferRange(buffer is not mapped)");
1519 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1520 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1521 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1525 if (offset
+ length
> bufObj
->Length
) {
1526 _mesa_error(ctx
, GL_INVALID_VALUE
,
1527 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1528 (long)offset
, (long)length
, (long)bufObj
->Length
);
1532 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1534 if (ctx
->Driver
.FlushMappedBufferRange
)
1535 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
, offset
, length
, bufObj
);
1539 #if FEATURE_APPLE_object_purgeable
1541 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1543 struct gl_buffer_object
*bufObj
;
1546 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1548 _mesa_error(ctx
, GL_INVALID_VALUE
,
1549 "glObjectPurgeable(name = 0x%x)", name
);
1552 if (!_mesa_is_bufferobj(bufObj
)) {
1553 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1557 if (bufObj
->Purgeable
) {
1558 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1559 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1560 return GL_VOLATILE_APPLE
;
1563 bufObj
->Purgeable
= GL_TRUE
;
1565 retval
= GL_VOLATILE_APPLE
;
1566 if (ctx
->Driver
.BufferObjectPurgeable
)
1567 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1574 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1576 struct gl_renderbuffer
*bufObj
;
1579 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1581 _mesa_error(ctx
, GL_INVALID_VALUE
,
1582 "glObjectUnpurgeable(name = 0x%x)", name
);
1586 if (bufObj
->Purgeable
) {
1587 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1588 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1589 return GL_VOLATILE_APPLE
;
1592 bufObj
->Purgeable
= GL_TRUE
;
1594 retval
= GL_VOLATILE_APPLE
;
1595 if (ctx
->Driver
.RenderObjectPurgeable
)
1596 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1603 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1605 struct gl_texture_object
*bufObj
;
1608 bufObj
= _mesa_lookup_texture(ctx
, name
);
1610 _mesa_error(ctx
, GL_INVALID_VALUE
,
1611 "glObjectPurgeable(name = 0x%x)", name
);
1615 if (bufObj
->Purgeable
) {
1616 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1617 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1618 return GL_VOLATILE_APPLE
;
1621 bufObj
->Purgeable
= GL_TRUE
;
1623 retval
= GL_VOLATILE_APPLE
;
1624 if (ctx
->Driver
.TextureObjectPurgeable
)
1625 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1632 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1636 GET_CURRENT_CONTEXT(ctx
);
1637 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1640 _mesa_error(ctx
, GL_INVALID_VALUE
,
1641 "glObjectPurgeable(name = 0x%x)", name
);
1646 case GL_VOLATILE_APPLE
:
1647 case GL_RELEASED_APPLE
:
1651 _mesa_error(ctx
, GL_INVALID_ENUM
,
1652 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1657 switch (objectType
) {
1659 retval
= texture_object_purgeable(ctx
, name
, option
);
1661 case GL_RENDERBUFFER_EXT
:
1662 retval
= renderbuffer_purgeable(ctx
, name
, option
);
1664 case GL_BUFFER_OBJECT_APPLE
:
1665 retval
= buffer_object_purgeable(ctx
, name
, option
);
1668 _mesa_error(ctx
, GL_INVALID_ENUM
,
1669 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1674 /* In strict conformance to the spec, we must only return VOLATILE when
1675 * when passed the VOLATILE option. Madness.
1677 * XXX First fix the spec, then fix me.
1679 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1684 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1686 struct gl_buffer_object
*bufObj
;
1689 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1691 _mesa_error(ctx
, GL_INVALID_VALUE
,
1692 "glObjectUnpurgeable(name = 0x%x)", name
);
1696 if (! bufObj
->Purgeable
) {
1697 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1698 "glObjectUnpurgeable(name = 0x%x) object is "
1699 " already \"unpurged\"", name
);
1703 bufObj
->Purgeable
= GL_FALSE
;
1706 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1707 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1714 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1716 struct gl_renderbuffer
*bufObj
;
1719 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1721 _mesa_error(ctx
, GL_INVALID_VALUE
,
1722 "glObjectUnpurgeable(name = 0x%x)", name
);
1726 if (! bufObj
->Purgeable
) {
1727 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1728 "glObjectUnpurgeable(name = 0x%x) object is "
1729 " already \"unpurged\"", name
);
1733 bufObj
->Purgeable
= GL_FALSE
;
1736 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1737 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1744 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1746 struct gl_texture_object
*bufObj
;
1749 bufObj
= _mesa_lookup_texture(ctx
, name
);
1751 _mesa_error(ctx
, GL_INVALID_VALUE
,
1752 "glObjectUnpurgeable(name = 0x%x)", name
);
1756 if (! bufObj
->Purgeable
) {
1757 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1758 "glObjectUnpurgeable(name = 0x%x) object is"
1759 " already \"unpurged\"", name
);
1763 bufObj
->Purgeable
= GL_FALSE
;
1766 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1767 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1774 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1776 GET_CURRENT_CONTEXT(ctx
);
1777 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1780 _mesa_error(ctx
, GL_INVALID_VALUE
,
1781 "glObjectUnpurgeable(name = 0x%x)", name
);
1786 case GL_RETAINED_APPLE
:
1787 case GL_UNDEFINED_APPLE
:
1791 _mesa_error(ctx
, GL_INVALID_ENUM
,
1792 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1797 switch (objectType
) {
1798 case GL_BUFFER_OBJECT_APPLE
:
1799 return buffer_object_unpurgeable(ctx
, name
, option
);
1801 return texture_object_unpurgeable(ctx
, name
, option
);
1802 case GL_RENDERBUFFER_EXT
:
1803 return renderbuffer_unpurgeable(ctx
, name
, option
);
1805 _mesa_error(ctx
, GL_INVALID_ENUM
,
1806 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1814 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1815 GLenum pname
, GLint
*params
)
1817 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1819 _mesa_error(ctx
, GL_INVALID_VALUE
,
1820 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1825 case GL_PURGEABLE_APPLE
:
1826 *params
= bufObj
->Purgeable
;
1829 _mesa_error(ctx
, GL_INVALID_ENUM
,
1830 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1838 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
1839 GLenum pname
, GLint
*params
)
1841 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
1843 _mesa_error(ctx
, GL_INVALID_VALUE
,
1844 "glObjectUnpurgeable(name = 0x%x)", name
);
1849 case GL_PURGEABLE_APPLE
:
1850 *params
= rb
->Purgeable
;
1853 _mesa_error(ctx
, GL_INVALID_ENUM
,
1854 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1862 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1863 GLenum pname
, GLint
*params
)
1865 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
1867 _mesa_error(ctx
, GL_INVALID_VALUE
,
1868 "glObjectUnpurgeable(name = 0x%x)", name
);
1873 case GL_PURGEABLE_APPLE
:
1874 *params
= texObj
->Purgeable
;
1877 _mesa_error(ctx
, GL_INVALID_ENUM
,
1878 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1886 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
1889 GET_CURRENT_CONTEXT(ctx
);
1892 _mesa_error(ctx
, GL_INVALID_VALUE
,
1893 "glGetObjectParameteriv(name = 0x%x)", name
);
1897 switch (objectType
) {
1899 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
1901 case GL_BUFFER_OBJECT_APPLE
:
1902 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
1904 case GL_RENDERBUFFER_EXT
:
1905 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
1908 _mesa_error(ctx
, GL_INVALID_ENUM
,
1909 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1914 #endif /* FEATURE_APPLE_object_purgeable */