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);
663 * Return the gl_buffer_object for the given ID.
664 * Always return NULL for ID 0.
666 struct gl_buffer_object
*
667 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
672 return (struct gl_buffer_object
*)
673 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
678 * If *ptr points to obj, set ptr = the Null/default buffer object.
679 * This is a helper for buffer object deletion.
680 * The GL spec says that deleting a buffer object causes it to get
681 * unbound from all arrays in the current context.
684 unbind(struct gl_context
*ctx
,
685 struct gl_buffer_object
**ptr
,
686 struct gl_buffer_object
*obj
)
689 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
695 * Plug default/fallback buffer object functions into the device
699 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
701 /* GL_ARB_vertex/pixel_buffer_object */
702 driver
->NewBufferObject
= _mesa_new_buffer_object
;
703 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
704 driver
->BindBuffer
= NULL
;
705 driver
->BufferData
= _mesa_buffer_data
;
706 driver
->BufferSubData
= _mesa_buffer_subdata
;
707 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
708 driver
->MapBuffer
= _mesa_buffer_map
;
709 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
711 /* GL_ARB_map_buffer_range */
712 driver
->MapBufferRange
= _mesa_buffer_map_range
;
713 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
715 /* GL_ARB_copy_buffer */
716 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
721 /**********************************************************************/
723 /**********************************************************************/
726 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
728 GET_CURRENT_CONTEXT(ctx
);
729 ASSERT_OUTSIDE_BEGIN_END(ctx
);
731 if (MESA_VERBOSE
& VERBOSE_API
)
732 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
733 _mesa_lookup_enum_by_nr(target
), buffer
);
735 bind_buffer_object(ctx
, target
, buffer
);
740 * Delete a set of buffer objects.
742 * \param n Number of buffer objects to delete.
743 * \param ids Array of \c n buffer object IDs.
746 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
748 GET_CURRENT_CONTEXT(ctx
);
750 ASSERT_OUTSIDE_BEGIN_END(ctx
);
753 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
757 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
759 for (i
= 0; i
< n
; i
++) {
760 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
762 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
765 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
767 if (_mesa_bufferobj_mapped(bufObj
)) {
768 /* if mapped, unmap it now */
769 ctx
->Driver
.UnmapBuffer(ctx
, 0, bufObj
);
770 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
771 bufObj
->Pointer
= NULL
;
774 /* unbind any vertex pointers bound to this buffer */
775 unbind(ctx
, &arrayObj
->Vertex
.BufferObj
, bufObj
);
776 unbind(ctx
, &arrayObj
->Weight
.BufferObj
, bufObj
);
777 unbind(ctx
, &arrayObj
->Normal
.BufferObj
, bufObj
);
778 unbind(ctx
, &arrayObj
->Color
.BufferObj
, bufObj
);
779 unbind(ctx
, &arrayObj
->SecondaryColor
.BufferObj
, bufObj
);
780 unbind(ctx
, &arrayObj
->FogCoord
.BufferObj
, bufObj
);
781 unbind(ctx
, &arrayObj
->Index
.BufferObj
, bufObj
);
782 unbind(ctx
, &arrayObj
->EdgeFlag
.BufferObj
, bufObj
);
783 for (j
= 0; j
< Elements(arrayObj
->TexCoord
); j
++) {
784 unbind(ctx
, &arrayObj
->TexCoord
[j
].BufferObj
, bufObj
);
786 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
787 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
790 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
791 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
793 if (ctx
->Array
.ElementArrayBufferObj
== bufObj
) {
794 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
797 /* unbind any pixel pack/unpack pointers bound to this buffer */
798 if (ctx
->Pack
.BufferObj
== bufObj
) {
799 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
801 if (ctx
->Unpack
.BufferObj
== bufObj
) {
802 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
805 /* The ID is immediately freed for re-use */
806 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
807 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
811 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
816 * Generate a set of unique buffer object IDs and store them in \c buffer.
818 * \param n Number of IDs to generate.
819 * \param buffer Array of \c n locations to store the IDs.
822 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
824 GET_CURRENT_CONTEXT(ctx
);
827 ASSERT_OUTSIDE_BEGIN_END(ctx
);
829 if (MESA_VERBOSE
& VERBOSE_API
)
830 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
833 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
842 * This must be atomic (generation and allocation of buffer object IDs)
844 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
846 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
848 /* Insert the ID and pointer to dummy buffer object into hash table */
849 for (i
= 0; i
< n
; i
++) {
850 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
852 buffer
[i
] = first
+ i
;
855 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
860 * Determine if ID is the name of a buffer object.
862 * \param id ID of the potential buffer object.
863 * \return \c GL_TRUE if \c id is the name of a buffer object,
864 * \c GL_FALSE otherwise.
867 _mesa_IsBufferARB(GLuint id
)
869 struct gl_buffer_object
*bufObj
;
870 GET_CURRENT_CONTEXT(ctx
);
871 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
873 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
874 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
875 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
877 return bufObj
&& bufObj
!= &DummyBufferObject
;
882 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
883 const GLvoid
* data
, GLenum usage
)
885 GET_CURRENT_CONTEXT(ctx
);
886 struct gl_buffer_object
*bufObj
;
887 ASSERT_OUTSIDE_BEGIN_END(ctx
);
889 if (MESA_VERBOSE
& VERBOSE_API
)
890 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
891 _mesa_lookup_enum_by_nr(target
),
892 (long int) size
, data
,
893 _mesa_lookup_enum_by_nr(usage
));
896 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
901 case GL_STREAM_DRAW_ARB
:
902 case GL_STREAM_READ_ARB
:
903 case GL_STREAM_COPY_ARB
:
904 case GL_STATIC_DRAW_ARB
:
905 case GL_STATIC_READ_ARB
:
906 case GL_STATIC_COPY_ARB
:
907 case GL_DYNAMIC_DRAW_ARB
:
908 case GL_DYNAMIC_READ_ARB
:
909 case GL_DYNAMIC_COPY_ARB
:
913 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(usage)");
917 bufObj
= get_buffer(ctx
, target
);
919 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(target)" );
922 if (!_mesa_is_bufferobj(bufObj
)) {
923 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBufferDataARB(buffer 0)" );
927 if (_mesa_bufferobj_mapped(bufObj
)) {
928 /* Unmap the existing buffer. We'll replace it now. Not an error. */
929 ctx
->Driver
.UnmapBuffer(ctx
, target
, bufObj
);
930 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
931 ASSERT(bufObj
->Pointer
== NULL
);
934 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
936 bufObj
->Written
= GL_TRUE
;
939 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
940 bufObj
->Name
, size
, data
, usage
);
947 ASSERT(ctx
->Driver
.BufferData
);
948 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
949 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
955 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
956 GLsizeiptrARB size
, const GLvoid
* data
)
958 GET_CURRENT_CONTEXT(ctx
);
959 struct gl_buffer_object
*bufObj
;
960 ASSERT_OUTSIDE_BEGIN_END(ctx
);
962 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
963 "glBufferSubDataARB" );
965 /* error already recorded */
972 bufObj
->Written
= GL_TRUE
;
974 ASSERT(ctx
->Driver
.BufferSubData
);
975 ctx
->Driver
.BufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
980 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
981 GLsizeiptrARB size
, void * data
)
983 GET_CURRENT_CONTEXT(ctx
);
984 struct gl_buffer_object
*bufObj
;
985 ASSERT_OUTSIDE_BEGIN_END(ctx
);
987 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
988 "glGetBufferSubDataARB" );
990 /* error already recorded */
994 ASSERT(ctx
->Driver
.GetBufferSubData
);
995 ctx
->Driver
.GetBufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
1000 _mesa_MapBufferARB(GLenum target
, GLenum access
)
1002 GET_CURRENT_CONTEXT(ctx
);
1003 struct gl_buffer_object
* bufObj
;
1004 GLbitfield accessFlags
;
1007 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1010 case GL_READ_ONLY_ARB
:
1011 accessFlags
= GL_MAP_READ_BIT
;
1013 case GL_WRITE_ONLY_ARB
:
1014 accessFlags
= GL_MAP_WRITE_BIT
;
1016 case GL_READ_WRITE_ARB
:
1017 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1020 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1024 bufObj
= get_buffer(ctx
, target
);
1026 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(target)" );
1029 if (!_mesa_is_bufferobj(bufObj
)) {
1030 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(buffer 0)" );
1033 if (_mesa_bufferobj_mapped(bufObj
)) {
1034 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1038 ASSERT(ctx
->Driver
.MapBuffer
);
1039 map
= ctx
->Driver
.MapBuffer( ctx
, target
, access
, bufObj
);
1041 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1045 /* The driver callback should have set these fields.
1046 * This is important because other modules (like VBO) might call
1047 * the driver function directly.
1049 ASSERT(bufObj
->Pointer
== map
);
1050 ASSERT(bufObj
->Length
== bufObj
->Size
);
1051 ASSERT(bufObj
->Offset
== 0);
1052 bufObj
->AccessFlags
= accessFlags
;
1055 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1056 bufObj
->Written
= GL_TRUE
;
1059 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1060 bufObj
->Name
, bufObj
->Size
, access
);
1061 if (access
== GL_WRITE_ONLY_ARB
) {
1063 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1064 for (i
= 0; i
< bufObj
->Size
; i
++)
1071 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1073 /* buffer is 100 bytes larger than requested, fill with magic value */
1074 for (i
= 0; i
< 100; i
++) {
1075 buf
[bufObj
->Size
- i
- 1] = 123;
1080 return bufObj
->Pointer
;
1084 GLboolean GLAPIENTRY
1085 _mesa_UnmapBufferARB(GLenum target
)
1087 GET_CURRENT_CONTEXT(ctx
);
1088 struct gl_buffer_object
*bufObj
;
1089 GLboolean status
= GL_TRUE
;
1090 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1092 bufObj
= get_buffer(ctx
, target
);
1094 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1097 if (!_mesa_is_bufferobj(bufObj
)) {
1098 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1101 if (!_mesa_bufferobj_mapped(bufObj
)) {
1102 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1107 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1108 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1110 /* check that last 100 bytes are still = magic value */
1111 for (i
= 0; i
< 100; i
++) {
1112 GLuint pos
= bufObj
->Size
- i
- 1;
1113 if (buf
[pos
] != 123) {
1114 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1115 " at position %d (value = %u)\n",
1123 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1124 GLuint i
, unchanged
= 0;
1125 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1127 /* check which bytes changed */
1128 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1129 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1136 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1137 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1142 status
= ctx
->Driver
.UnmapBuffer( ctx
, target
, bufObj
);
1143 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1144 ASSERT(bufObj
->Pointer
== NULL
);
1145 ASSERT(bufObj
->Offset
== 0);
1146 ASSERT(bufObj
->Length
== 0);
1153 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1155 GET_CURRENT_CONTEXT(ctx
);
1156 struct gl_buffer_object
*bufObj
;
1157 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1159 bufObj
= get_buffer(ctx
, target
);
1161 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1164 if (!_mesa_is_bufferobj(bufObj
)) {
1165 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1170 case GL_BUFFER_SIZE_ARB
:
1171 *params
= (GLint
) bufObj
->Size
;
1173 case GL_BUFFER_USAGE_ARB
:
1174 *params
= bufObj
->Usage
;
1176 case GL_BUFFER_ACCESS_ARB
:
1177 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1179 case GL_BUFFER_MAPPED_ARB
:
1180 *params
= _mesa_bufferobj_mapped(bufObj
);
1182 case GL_BUFFER_ACCESS_FLAGS
:
1183 if (ctx
->VersionMajor
< 3)
1185 *params
= bufObj
->AccessFlags
;
1187 case GL_BUFFER_MAP_OFFSET
:
1188 if (ctx
->VersionMajor
< 3)
1190 *params
= (GLint
) bufObj
->Offset
;
1192 case GL_BUFFER_MAP_LENGTH
:
1193 if (ctx
->VersionMajor
< 3)
1195 *params
= (GLint
) bufObj
->Length
;
1198 ; /* fall-through */
1202 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1203 _mesa_lookup_enum_by_nr(pname
));
1209 * This is pretty much a duplicate of GetBufferParameteriv() but the
1210 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1213 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1215 GET_CURRENT_CONTEXT(ctx
);
1216 struct gl_buffer_object
*bufObj
;
1217 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1219 bufObj
= get_buffer(ctx
, target
);
1221 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1224 if (!_mesa_is_bufferobj(bufObj
)) {
1225 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1230 case GL_BUFFER_SIZE_ARB
:
1231 *params
= bufObj
->Size
;
1233 case GL_BUFFER_USAGE_ARB
:
1234 *params
= bufObj
->Usage
;
1236 case GL_BUFFER_ACCESS_ARB
:
1237 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1239 case GL_BUFFER_ACCESS_FLAGS
:
1240 if (ctx
->VersionMajor
< 3)
1242 *params
= bufObj
->AccessFlags
;
1244 case GL_BUFFER_MAPPED_ARB
:
1245 *params
= _mesa_bufferobj_mapped(bufObj
);
1247 case GL_BUFFER_MAP_OFFSET
:
1248 if (ctx
->VersionMajor
< 3)
1250 *params
= bufObj
->Offset
;
1252 case GL_BUFFER_MAP_LENGTH
:
1253 if (ctx
->VersionMajor
< 3)
1255 *params
= bufObj
->Length
;
1258 ; /* fall-through */
1262 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1263 _mesa_lookup_enum_by_nr(pname
));
1268 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1270 GET_CURRENT_CONTEXT(ctx
);
1271 struct gl_buffer_object
* bufObj
;
1272 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1274 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1275 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1279 bufObj
= get_buffer(ctx
, target
);
1281 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1284 if (!_mesa_is_bufferobj(bufObj
)) {
1285 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1289 *params
= bufObj
->Pointer
;
1294 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1295 GLintptr readOffset
, GLintptr writeOffset
,
1298 GET_CURRENT_CONTEXT(ctx
);
1299 struct gl_buffer_object
*src
, *dst
;
1300 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1302 src
= get_buffer(ctx
, readTarget
);
1303 if (!src
|| !_mesa_is_bufferobj(src
)) {
1304 _mesa_error(ctx
, GL_INVALID_ENUM
,
1305 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1309 dst
= get_buffer(ctx
, writeTarget
);
1310 if (!dst
|| !_mesa_is_bufferobj(dst
)) {
1311 _mesa_error(ctx
, GL_INVALID_ENUM
,
1312 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1316 if (_mesa_bufferobj_mapped(src
)) {
1317 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1318 "glCopyBuffserSubData(readBuffer is mapped)");
1322 if (_mesa_bufferobj_mapped(dst
)) {
1323 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1324 "glCopyBuffserSubData(writeBuffer is mapped)");
1328 if (readOffset
< 0) {
1329 _mesa_error(ctx
, GL_INVALID_VALUE
,
1330 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1334 if (writeOffset
< 0) {
1335 _mesa_error(ctx
, GL_INVALID_VALUE
,
1336 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1340 if (readOffset
+ size
> src
->Size
) {
1341 _mesa_error(ctx
, GL_INVALID_VALUE
,
1342 "glCopyBuffserSubData(readOffset + size = %d)",
1343 (int) (readOffset
+ size
));
1347 if (writeOffset
+ size
> dst
->Size
) {
1348 _mesa_error(ctx
, GL_INVALID_VALUE
,
1349 "glCopyBuffserSubData(writeOffset + size = %d)",
1350 (int) (writeOffset
+ size
));
1355 if (readOffset
+ size
<= writeOffset
) {
1358 else if (writeOffset
+ size
<= readOffset
) {
1362 /* overlapping src/dst is illegal */
1363 _mesa_error(ctx
, GL_INVALID_VALUE
,
1364 "glCopyBuffserSubData(overlapping src/dst)");
1369 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1374 * See GL_ARB_map_buffer_range spec
1377 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1380 GET_CURRENT_CONTEXT(ctx
);
1381 struct gl_buffer_object
*bufObj
;
1384 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1386 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1387 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1388 "glMapBufferRange(extension not supported)");
1393 _mesa_error(ctx
, GL_INVALID_VALUE
,
1394 "glMapBufferRange(offset = %ld)", (long)offset
);
1399 _mesa_error(ctx
, GL_INVALID_VALUE
,
1400 "glMapBufferRange(length = %ld)", (long)length
);
1404 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1405 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1406 "glMapBufferRange(access indicates neither read or write)");
1410 if (access
& GL_MAP_READ_BIT
) {
1411 if ((access
& GL_MAP_INVALIDATE_RANGE_BIT
) ||
1412 (access
& GL_MAP_INVALIDATE_BUFFER_BIT
) ||
1413 (access
& GL_MAP_UNSYNCHRONIZED_BIT
)) {
1414 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1415 "glMapBufferRange(invalid access flags)");
1420 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1421 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1422 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1423 "glMapBufferRange(invalid access flags)");
1427 bufObj
= get_buffer(ctx
, target
);
1428 if (!bufObj
|| !_mesa_is_bufferobj(bufObj
)) {
1429 _mesa_error(ctx
, GL_INVALID_ENUM
,
1430 "glMapBufferRange(target = 0x%x)", target
);
1434 if (offset
+ length
> bufObj
->Size
) {
1435 _mesa_error(ctx
, GL_INVALID_VALUE
,
1436 "glMapBufferRange(offset + length > size)");
1440 if (_mesa_bufferobj_mapped(bufObj
)) {
1441 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1442 "glMapBufferRange(buffer already mapped)");
1446 ASSERT(ctx
->Driver
.MapBufferRange
);
1447 map
= ctx
->Driver
.MapBufferRange(ctx
, target
, offset
, length
,
1450 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1453 /* The driver callback should have set all these fields.
1454 * This is important because other modules (like VBO) might call
1455 * the driver function directly.
1457 ASSERT(bufObj
->Pointer
== map
);
1458 ASSERT(bufObj
->Length
== length
);
1459 ASSERT(bufObj
->Offset
== offset
);
1460 ASSERT(bufObj
->AccessFlags
== access
);
1468 * See GL_ARB_map_buffer_range spec
1471 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1473 GET_CURRENT_CONTEXT(ctx
);
1474 struct gl_buffer_object
*bufObj
;
1475 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1477 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1478 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1479 "glMapBufferRange(extension not supported)");
1484 _mesa_error(ctx
, GL_INVALID_VALUE
,
1485 "glMapBufferRange(offset = %ld)", (long)offset
);
1490 _mesa_error(ctx
, GL_INVALID_VALUE
,
1491 "glMapBufferRange(length = %ld)", (long)length
);
1495 bufObj
= get_buffer(ctx
, target
);
1497 _mesa_error(ctx
, GL_INVALID_ENUM
,
1498 "glMapBufferRange(target = 0x%x)", target
);
1502 if (!_mesa_is_bufferobj(bufObj
)) {
1503 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1504 "glMapBufferRange(current buffer is 0)");
1508 if (!_mesa_bufferobj_mapped(bufObj
)) {
1509 /* buffer is not mapped */
1510 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1511 "glMapBufferRange(buffer is not mapped)");
1515 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1516 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1517 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1521 if (offset
+ length
> bufObj
->Length
) {
1522 _mesa_error(ctx
, GL_INVALID_VALUE
,
1523 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1524 (long)offset
, (long)length
, (long)bufObj
->Length
);
1528 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1530 if (ctx
->Driver
.FlushMappedBufferRange
)
1531 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
, offset
, length
, bufObj
);
1535 #if FEATURE_APPLE_object_purgeable
1537 _mesa_BufferObjectPurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1539 struct gl_buffer_object
*bufObj
;
1542 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1544 _mesa_error(ctx
, GL_INVALID_VALUE
,
1545 "glObjectPurgeable(name = 0x%x)", name
);
1548 if (!_mesa_is_bufferobj(bufObj
)) {
1549 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1553 if (bufObj
->Purgeable
) {
1554 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1555 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1556 return GL_VOLATILE_APPLE
;
1559 bufObj
->Purgeable
= GL_TRUE
;
1561 retval
= GL_VOLATILE_APPLE
;
1562 if (ctx
->Driver
.BufferObjectPurgeable
)
1563 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1570 _mesa_RenderObjectPurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1572 struct gl_renderbuffer
*bufObj
;
1575 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1577 _mesa_error(ctx
, GL_INVALID_VALUE
,
1578 "glObjectUnpurgeable(name = 0x%x)", name
);
1582 if (bufObj
->Purgeable
) {
1583 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1584 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1585 return GL_VOLATILE_APPLE
;
1588 bufObj
->Purgeable
= GL_TRUE
;
1590 retval
= GL_VOLATILE_APPLE
;
1591 if (ctx
->Driver
.RenderObjectPurgeable
)
1592 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1599 _mesa_TextureObjectPurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1601 struct gl_texture_object
*bufObj
;
1604 bufObj
= _mesa_lookup_texture(ctx
, name
);
1606 _mesa_error(ctx
, GL_INVALID_VALUE
,
1607 "glObjectPurgeable(name = 0x%x)", name
);
1611 if (bufObj
->Purgeable
) {
1612 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1613 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1614 return GL_VOLATILE_APPLE
;
1617 bufObj
->Purgeable
= GL_TRUE
;
1619 retval
= GL_VOLATILE_APPLE
;
1620 if (ctx
->Driver
.TextureObjectPurgeable
)
1621 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1628 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1632 GET_CURRENT_CONTEXT(ctx
);
1633 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1636 _mesa_error(ctx
, GL_INVALID_VALUE
,
1637 "glObjectPurgeable(name = 0x%x)", name
);
1642 case GL_VOLATILE_APPLE
:
1643 case GL_RELEASED_APPLE
:
1647 _mesa_error(ctx
, GL_INVALID_ENUM
,
1648 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1653 switch (objectType
) {
1655 retval
= _mesa_TextureObjectPurgeable (ctx
, name
, option
);
1657 case GL_RENDERBUFFER_EXT
:
1658 retval
= _mesa_RenderObjectPurgeable (ctx
, name
, option
);
1660 case GL_BUFFER_OBJECT_APPLE
:
1661 retval
= _mesa_BufferObjectPurgeable (ctx
, name
, option
);
1664 _mesa_error(ctx
, GL_INVALID_ENUM
,
1665 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1670 /* In strict conformance to the spec, we must only return VOLATILE when
1671 * when passed the VOLATILE option. Madness.
1673 * XXX First fix the spec, then fix me.
1675 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1680 _mesa_BufferObjectUnpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1682 struct gl_buffer_object
*bufObj
;
1685 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1687 _mesa_error(ctx
, GL_INVALID_VALUE
,
1688 "glObjectUnpurgeable(name = 0x%x)", name
);
1692 if (! bufObj
->Purgeable
) {
1693 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1694 "glObjectUnpurgeable(name = 0x%x) object is "
1695 " already \"unpurged\"", name
);
1699 bufObj
->Purgeable
= GL_FALSE
;
1702 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1703 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1710 _mesa_RenderObjectUnpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1712 struct gl_renderbuffer
*bufObj
;
1715 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1717 _mesa_error(ctx
, GL_INVALID_VALUE
,
1718 "glObjectUnpurgeable(name = 0x%x)", name
);
1722 if (! bufObj
->Purgeable
) {
1723 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1724 "glObjectUnpurgeable(name = 0x%x) object is "
1725 " already \"unpurged\"", name
);
1729 bufObj
->Purgeable
= GL_FALSE
;
1732 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1733 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1740 _mesa_TextureObjectUnpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1742 struct gl_texture_object
*bufObj
;
1745 bufObj
= _mesa_lookup_texture(ctx
, name
);
1747 _mesa_error(ctx
, GL_INVALID_VALUE
,
1748 "glObjectUnpurgeable(name = 0x%x)", name
);
1752 if (! bufObj
->Purgeable
) {
1753 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1754 "glObjectUnpurgeable(name = 0x%x) object is"
1755 " already \"unpurged\"", name
);
1759 bufObj
->Purgeable
= GL_FALSE
;
1762 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1763 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1770 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1772 GET_CURRENT_CONTEXT(ctx
);
1773 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1776 _mesa_error(ctx
, GL_INVALID_VALUE
,
1777 "glObjectUnpurgeable(name = 0x%x)", name
);
1782 case GL_RETAINED_APPLE
:
1783 case GL_UNDEFINED_APPLE
:
1787 _mesa_error(ctx
, GL_INVALID_ENUM
,
1788 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1793 switch (objectType
) {
1794 case GL_BUFFER_OBJECT_APPLE
:
1795 return _mesa_BufferObjectUnpurgeable(ctx
, name
, option
);
1797 return _mesa_TextureObjectUnpurgeable(ctx
, name
, option
);
1798 case GL_RENDERBUFFER_EXT
:
1799 return _mesa_RenderObjectUnpurgeable(ctx
, name
, option
);
1801 _mesa_error(ctx
, GL_INVALID_ENUM
,
1802 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1810 _mesa_GetBufferObjectParameterivAPPLE(struct gl_context
*ctx
, GLuint name
,
1811 GLenum pname
, GLint
* params
)
1813 struct gl_buffer_object
*bufObj
;
1815 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1817 _mesa_error(ctx
, GL_INVALID_VALUE
,
1818 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1823 case GL_PURGEABLE_APPLE
:
1824 *params
= bufObj
->Purgeable
;
1827 _mesa_error(ctx
, GL_INVALID_ENUM
,
1828 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1836 _mesa_GetRenderObjectParameterivAPPLE(struct gl_context
*ctx
, GLuint name
,
1837 GLenum pname
, GLint
* params
)
1839 struct gl_renderbuffer
*bufObj
;
1841 bufObj
= _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
= bufObj
->Purgeable
;
1853 _mesa_error(ctx
, GL_INVALID_ENUM
,
1854 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1862 _mesa_GetTextureObjectParameterivAPPLE(struct gl_context
*ctx
, GLuint name
,
1863 GLenum pname
, GLint
* params
)
1865 struct gl_texture_object
*bufObj
;
1867 bufObj
= _mesa_lookup_texture(ctx
, name
);
1869 _mesa_error(ctx
, GL_INVALID_VALUE
,
1870 "glObjectUnpurgeable(name = 0x%x)", name
);
1875 case GL_PURGEABLE_APPLE
:
1876 *params
= bufObj
->Purgeable
;
1879 _mesa_error(ctx
, GL_INVALID_ENUM
,
1880 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1888 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
1891 GET_CURRENT_CONTEXT(ctx
);
1894 _mesa_error(ctx
, GL_INVALID_VALUE
,
1895 "glGetObjectParameteriv(name = 0x%x)", name
);
1899 switch (objectType
) {
1901 _mesa_GetTextureObjectParameterivAPPLE (ctx
, name
, pname
, params
);
1903 case GL_BUFFER_OBJECT_APPLE
:
1904 _mesa_GetBufferObjectParameterivAPPLE (ctx
, name
, pname
, params
);
1906 case GL_RENDERBUFFER_EXT
:
1907 _mesa_GetRenderObjectParameterivAPPLE (ctx
, name
, pname
, params
);
1910 _mesa_error(ctx
, GL_INVALID_ENUM
,
1911 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1916 #endif /* FEATURE_APPLE_object_purgeable */