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
.ArrayObj
->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
;
96 case GL_TEXTURE_BUFFER
:
97 if (ctx
->Extensions
.ARB_texture_buffer_object
) {
98 return &ctx
->Texture
.BufferObject
;
109 * Get the buffer object bound to the specified target in a GL context.
110 * \param ctx the GL context
111 * \param target the buffer object target to be retrieved.
112 * \return pointer to the buffer object bound to \c target in the
113 * specified context or \c NULL if \c target is invalid.
115 static inline struct gl_buffer_object
*
116 get_buffer(struct gl_context
*ctx
, GLenum target
)
118 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
126 * Convert a GLbitfield describing the mapped buffer access flags
127 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
130 simplified_access_mode(GLbitfield access
)
132 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
133 if ((access
& rwFlags
) == rwFlags
)
134 return GL_READ_WRITE
;
135 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
137 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
138 return GL_WRITE_ONLY
;
139 return GL_READ_WRITE
; /* this should never happen, but no big deal */
144 * Tests the subdata range parameters and sets the GL error code for
145 * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
147 * \param ctx GL context.
148 * \param target Buffer object target on which to operate.
149 * \param offset Offset of the first byte of the subdata range.
150 * \param size Size, in bytes, of the subdata range.
151 * \param caller Name of calling function for recording errors.
152 * \return A pointer to the buffer object bound to \c target in the
153 * specified context or \c NULL if any of the parameter or state
154 * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
157 * \sa glBufferSubDataARB, glGetBufferSubDataARB
159 static struct gl_buffer_object
*
160 buffer_object_subdata_range_good( struct gl_context
* ctx
, GLenum target
,
161 GLintptrARB offset
, GLsizeiptrARB size
,
164 struct gl_buffer_object
*bufObj
;
167 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
172 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
176 bufObj
= get_buffer(ctx
, target
);
178 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", caller
);
181 if (!_mesa_is_bufferobj(bufObj
)) {
182 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
185 if (offset
+ size
> bufObj
->Size
) {
186 _mesa_error(ctx
, GL_INVALID_VALUE
,
187 "%s(size + offset > buffer size)", caller
);
190 if (_mesa_bufferobj_mapped(bufObj
)) {
191 /* Buffer is currently mapped */
192 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
201 * Allocate and initialize a new buffer object.
203 * Default callback for the \c dd_function_table::NewBufferObject() hook.
205 static struct gl_buffer_object
*
206 _mesa_new_buffer_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
208 struct gl_buffer_object
*obj
;
212 obj
= MALLOC_STRUCT(gl_buffer_object
);
213 _mesa_initialize_buffer_object(obj
, name
, target
);
219 * Delete a buffer object.
221 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
224 _mesa_delete_buffer_object(struct gl_context
*ctx
,
225 struct gl_buffer_object
*bufObj
)
232 /* assign strange values here to help w/ debugging */
233 bufObj
->RefCount
= -1000;
236 _glthread_DESTROY_MUTEX(bufObj
->Mutex
);
243 * Set ptr to bufObj w/ reference counting.
244 * This is normally only called from the _mesa_reference_buffer_object() macro
245 * when there's a real pointer change.
248 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
249 struct gl_buffer_object
**ptr
,
250 struct gl_buffer_object
*bufObj
)
253 /* Unreference the old buffer */
254 GLboolean deleteFlag
= GL_FALSE
;
255 struct gl_buffer_object
*oldObj
= *ptr
;
257 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
258 ASSERT(oldObj
->RefCount
> 0);
261 printf("BufferObj %p %d DECR to %d\n",
262 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
264 deleteFlag
= (oldObj
->RefCount
== 0);
265 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
269 /* some sanity checking: don't delete a buffer still in use */
271 /* unfortunately, these tests are invalid during context tear-down */
272 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
273 ASSERT(ctx
->Array
.ArrayObj
->ElementArrayBufferObj
!= bufObj
);
274 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
277 ASSERT(ctx
->Driver
.DeleteBuffer
);
278 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
286 /* reference new buffer */
287 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
288 if (bufObj
->RefCount
== 0) {
289 /* this buffer's being deleted (look just above) */
290 /* Not sure this can every really happen. Warn if it does. */
291 _mesa_problem(NULL
, "referencing deleted buffer object");
297 printf("BufferObj %p %d INCR to %d\n",
298 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
302 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
308 * Initialize a buffer object to default values.
311 _mesa_initialize_buffer_object( struct gl_buffer_object
*obj
,
312 GLuint name
, GLenum target
)
316 memset(obj
, 0, sizeof(struct gl_buffer_object
));
317 _glthread_INIT_MUTEX(obj
->Mutex
);
320 obj
->Usage
= GL_STATIC_DRAW_ARB
;
321 obj
->AccessFlags
= DEFAULT_ACCESS
;
326 * Allocate space for and store data in a buffer object. Any data that was
327 * previously stored in the buffer object is lost. If \c data is \c NULL,
328 * memory will be allocated, but no copy will occur.
330 * This is the default callback for \c dd_function_table::BufferData()
331 * Note that all GL error checking will have been done already.
333 * \param ctx GL context.
334 * \param target Buffer object target on which to operate.
335 * \param size Size, in bytes, of the new data store.
336 * \param data Pointer to the data to store in the buffer object. This
337 * pointer may be \c NULL.
338 * \param usage Hints about how the data will be used.
339 * \param bufObj Object to be used.
341 * \return GL_TRUE for success, GL_FALSE for failure
342 * \sa glBufferDataARB, dd_function_table::BufferData.
345 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
346 const GLvoid
* data
, GLenum usage
,
347 struct gl_buffer_object
* bufObj
)
351 (void) ctx
; (void) target
;
353 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
355 bufObj
->Data
= (GLubyte
*) new_data
;
357 bufObj
->Usage
= usage
;
360 memcpy( bufObj
->Data
, data
, size
);
372 * Replace data in a subrange of buffer object. If the data range
373 * specified by \c size + \c offset extends beyond the end of the buffer or
374 * if \c data is \c NULL, no copy is performed.
376 * This is the default callback for \c dd_function_table::BufferSubData()
377 * Note that all GL error checking will have been done already.
379 * \param ctx GL context.
380 * \param target Buffer object target on which to operate.
381 * \param offset Offset of the first byte to be modified.
382 * \param size Size, in bytes, of the data range.
383 * \param data Pointer to the data to store in the buffer object.
384 * \param bufObj Object to be used.
386 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
389 _mesa_buffer_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
390 GLsizeiptrARB size
, const GLvoid
* data
,
391 struct gl_buffer_object
* bufObj
)
395 /* this should have been caught in _mesa_BufferSubData() */
396 ASSERT(size
+ offset
<= bufObj
->Size
);
399 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
405 * Retrieve data from a subrange of buffer object. If the data range
406 * specified by \c size + \c offset extends beyond the end of the buffer or
407 * if \c data is \c NULL, no copy is performed.
409 * This is the default callback for \c dd_function_table::GetBufferSubData()
410 * Note that all GL error checking will have been done already.
412 * \param ctx GL context.
413 * \param target Buffer object target on which to operate.
414 * \param offset Offset of the first byte to be fetched.
415 * \param size Size, in bytes, of the data range.
416 * \param data Destination for data
417 * \param bufObj Object to be used.
419 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
422 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
423 GLsizeiptrARB size
, GLvoid
* data
,
424 struct gl_buffer_object
* bufObj
)
428 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
429 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
435 * Default fallback for \c dd_function_table::MapBufferRange().
436 * Called via glMapBufferRange().
439 _mesa_buffer_map_range( struct gl_context
*ctx
, GLintptr offset
,
440 GLsizeiptr length
, GLbitfield access
,
441 struct gl_buffer_object
*bufObj
)
444 assert(!_mesa_bufferobj_mapped(bufObj
));
445 /* Just return a direct pointer to the data */
446 bufObj
->Pointer
= bufObj
->Data
+ offset
;
447 bufObj
->Length
= length
;
448 bufObj
->Offset
= offset
;
449 bufObj
->AccessFlags
= access
;
450 return bufObj
->Pointer
;
455 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
456 * Called via glFlushMappedBufferRange().
459 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
,
460 GLintptr offset
, GLsizeiptr length
,
461 struct gl_buffer_object
*obj
)
472 * Default callback for \c dd_function_table::MapBuffer().
474 * The input parameters will have been already tested for errors.
476 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
479 _mesa_buffer_unmap( struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
482 /* XXX we might assert here that bufObj->Pointer is non-null */
483 bufObj
->Pointer
= NULL
;
486 bufObj
->AccessFlags
= 0x0;
492 * Default fallback for \c dd_function_table::CopyBufferSubData().
493 * Called via glCopyBuffserSubData().
496 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
497 struct gl_buffer_object
*src
,
498 struct gl_buffer_object
*dst
,
499 GLintptr readOffset
, GLintptr writeOffset
,
502 GLubyte
*srcPtr
, *dstPtr
;
504 /* buffer should not already be mapped */
505 assert(!_mesa_bufferobj_mapped(src
));
506 assert(!_mesa_bufferobj_mapped(dst
));
508 srcPtr
= (GLubyte
*) ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
509 GL_MAP_READ_BIT
, src
);
510 dstPtr
= (GLubyte
*) ctx
->Driver
.MapBufferRange(ctx
, 0, dst
->Size
,
511 GL_MAP_WRITE_BIT
, dst
);
513 if (srcPtr
&& dstPtr
)
514 memcpy(dstPtr
+ writeOffset
, srcPtr
+ readOffset
, size
);
516 ctx
->Driver
.UnmapBuffer(ctx
, src
);
517 ctx
->Driver
.UnmapBuffer(ctx
, dst
);
523 * Initialize the state associated with buffer objects
526 _mesa_init_buffer_objects( struct gl_context
*ctx
)
528 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
529 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
530 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
532 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
533 ctx
->Shared
->NullBufferObj
);
535 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
536 ctx
->Shared
->NullBufferObj
);
537 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
538 ctx
->Shared
->NullBufferObj
);
543 _mesa_free_buffer_objects( struct gl_context
*ctx
)
545 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
547 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
548 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
553 * Bind the specified target to buffer for the specified context.
554 * Called by glBindBuffer() and other functions.
557 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
559 struct gl_buffer_object
*oldBufObj
;
560 struct gl_buffer_object
*newBufObj
= NULL
;
561 struct gl_buffer_object
**bindTarget
= NULL
;
563 bindTarget
= get_buffer_target(ctx
, target
);
565 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
569 /* Get pointer to old buffer object (to be unbound) */
570 oldBufObj
= *bindTarget
;
571 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
572 return; /* rebinding the same buffer object- no change */
575 * Get pointer to new buffer object (newBufObj)
578 /* The spec says there's not a buffer object named 0, but we use
579 * one internally because it simplifies things.
581 newBufObj
= ctx
->Shared
->NullBufferObj
;
584 /* non-default buffer object */
585 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
586 if (!newBufObj
|| newBufObj
== &DummyBufferObject
) {
587 /* If this is a new buffer object id, or one which was generated but
588 * never used before, allocate a buffer object now.
590 ASSERT(ctx
->Driver
.NewBufferObject
);
591 newBufObj
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
593 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
596 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, newBufObj
);
600 /* bind new buffer */
601 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
603 /* Pass BindBuffer call to device driver */
604 if (ctx
->Driver
.BindBuffer
)
605 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
610 * Update the default buffer objects in the given context to reference those
611 * specified in the shared state and release those referencing the old
615 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
617 /* Bind the NullBufferObj to remove references to those
618 * in the shared context hash table.
620 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
621 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
622 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
623 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
629 * Return the gl_buffer_object for the given ID.
630 * Always return NULL for ID 0.
632 struct gl_buffer_object
*
633 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
638 return (struct gl_buffer_object
*)
639 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
644 * If *ptr points to obj, set ptr = the Null/default buffer object.
645 * This is a helper for buffer object deletion.
646 * The GL spec says that deleting a buffer object causes it to get
647 * unbound from all arrays in the current context.
650 unbind(struct gl_context
*ctx
,
651 struct gl_buffer_object
**ptr
,
652 struct gl_buffer_object
*obj
)
655 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
661 * Plug default/fallback buffer object functions into the device
665 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
667 /* GL_ARB_vertex/pixel_buffer_object */
668 driver
->NewBufferObject
= _mesa_new_buffer_object
;
669 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
670 driver
->BindBuffer
= NULL
;
671 driver
->BufferData
= _mesa_buffer_data
;
672 driver
->BufferSubData
= _mesa_buffer_subdata
;
673 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
674 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
676 /* GL_ARB_map_buffer_range */
677 driver
->MapBufferRange
= _mesa_buffer_map_range
;
678 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
680 /* GL_ARB_copy_buffer */
681 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
686 /**********************************************************************/
688 /**********************************************************************/
691 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
693 GET_CURRENT_CONTEXT(ctx
);
694 ASSERT_OUTSIDE_BEGIN_END(ctx
);
696 if (MESA_VERBOSE
& VERBOSE_API
)
697 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
698 _mesa_lookup_enum_by_nr(target
), buffer
);
700 bind_buffer_object(ctx
, target
, buffer
);
705 * Delete a set of buffer objects.
707 * \param n Number of buffer objects to delete.
708 * \param ids Array of \c n buffer object IDs.
711 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
713 GET_CURRENT_CONTEXT(ctx
);
715 ASSERT_OUTSIDE_BEGIN_END(ctx
);
716 FLUSH_VERTICES(ctx
, 0);
719 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
723 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
725 for (i
= 0; i
< n
; i
++) {
726 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
728 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
731 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
733 if (_mesa_bufferobj_mapped(bufObj
)) {
734 /* if mapped, unmap it now */
735 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
736 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
737 bufObj
->Pointer
= NULL
;
740 /* unbind any vertex pointers bound to this buffer */
741 unbind(ctx
, &arrayObj
->Vertex
.BufferObj
, bufObj
);
742 unbind(ctx
, &arrayObj
->Weight
.BufferObj
, bufObj
);
743 unbind(ctx
, &arrayObj
->Normal
.BufferObj
, bufObj
);
744 unbind(ctx
, &arrayObj
->Color
.BufferObj
, bufObj
);
745 unbind(ctx
, &arrayObj
->SecondaryColor
.BufferObj
, bufObj
);
746 unbind(ctx
, &arrayObj
->FogCoord
.BufferObj
, bufObj
);
747 unbind(ctx
, &arrayObj
->Index
.BufferObj
, bufObj
);
748 unbind(ctx
, &arrayObj
->EdgeFlag
.BufferObj
, bufObj
);
749 for (j
= 0; j
< Elements(arrayObj
->TexCoord
); j
++) {
750 unbind(ctx
, &arrayObj
->TexCoord
[j
].BufferObj
, bufObj
);
752 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
753 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
756 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
757 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
759 if (arrayObj
->ElementArrayBufferObj
== bufObj
) {
760 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
763 /* unbind any pixel pack/unpack pointers bound to this buffer */
764 if (ctx
->Pack
.BufferObj
== bufObj
) {
765 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
767 if (ctx
->Unpack
.BufferObj
== bufObj
) {
768 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
771 /* The ID is immediately freed for re-use */
772 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
773 /* Make sure we do not run into the classic ABA problem on bind.
774 * We don't want to allow re-binding a buffer object that's been
775 * "deleted" by glDeleteBuffers().
777 * The explicit rebinding to the default object in the current context
778 * prevents the above in the current context, but another context
779 * sharing the same objects might suffer from this problem.
780 * The alternative would be to do the hash lookup in any case on bind
781 * which would introduce more runtime overhead than this.
783 bufObj
->DeletePending
= GL_TRUE
;
784 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
788 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
793 * Generate a set of unique buffer object IDs and store them in \c buffer.
795 * \param n Number of IDs to generate.
796 * \param buffer Array of \c n locations to store the IDs.
799 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
801 GET_CURRENT_CONTEXT(ctx
);
804 ASSERT_OUTSIDE_BEGIN_END(ctx
);
806 if (MESA_VERBOSE
& VERBOSE_API
)
807 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
810 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
819 * This must be atomic (generation and allocation of buffer object IDs)
821 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
823 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
825 /* Insert the ID and pointer to dummy buffer object into hash table */
826 for (i
= 0; i
< n
; i
++) {
827 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
829 buffer
[i
] = first
+ i
;
832 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
837 * Determine if ID is the name of a buffer object.
839 * \param id ID of the potential buffer object.
840 * \return \c GL_TRUE if \c id is the name of a buffer object,
841 * \c GL_FALSE otherwise.
844 _mesa_IsBufferARB(GLuint id
)
846 struct gl_buffer_object
*bufObj
;
847 GET_CURRENT_CONTEXT(ctx
);
848 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
850 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
851 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
852 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
854 return bufObj
&& bufObj
!= &DummyBufferObject
;
859 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
860 const GLvoid
* data
, GLenum usage
)
862 GET_CURRENT_CONTEXT(ctx
);
863 struct gl_buffer_object
*bufObj
;
864 ASSERT_OUTSIDE_BEGIN_END(ctx
);
866 if (MESA_VERBOSE
& VERBOSE_API
)
867 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
868 _mesa_lookup_enum_by_nr(target
),
869 (long int) size
, data
,
870 _mesa_lookup_enum_by_nr(usage
));
873 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
878 case GL_STREAM_DRAW_ARB
:
879 case GL_STREAM_READ_ARB
:
880 case GL_STREAM_COPY_ARB
:
881 case GL_STATIC_DRAW_ARB
:
882 case GL_STATIC_READ_ARB
:
883 case GL_STATIC_COPY_ARB
:
884 case GL_DYNAMIC_DRAW_ARB
:
885 case GL_DYNAMIC_READ_ARB
:
886 case GL_DYNAMIC_COPY_ARB
:
890 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(usage)");
894 bufObj
= get_buffer(ctx
, target
);
896 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(target)" );
899 if (!_mesa_is_bufferobj(bufObj
)) {
900 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBufferDataARB(buffer 0)" );
904 if (_mesa_bufferobj_mapped(bufObj
)) {
905 /* Unmap the existing buffer. We'll replace it now. Not an error. */
906 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
907 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
908 ASSERT(bufObj
->Pointer
== NULL
);
911 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
913 bufObj
->Written
= GL_TRUE
;
916 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
917 bufObj
->Name
, size
, data
, usage
);
924 ASSERT(ctx
->Driver
.BufferData
);
925 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
926 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
932 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
933 GLsizeiptrARB size
, const GLvoid
* data
)
935 GET_CURRENT_CONTEXT(ctx
);
936 struct gl_buffer_object
*bufObj
;
937 ASSERT_OUTSIDE_BEGIN_END(ctx
);
939 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
940 "glBufferSubDataARB" );
942 /* error already recorded */
949 bufObj
->Written
= GL_TRUE
;
951 ASSERT(ctx
->Driver
.BufferSubData
);
952 ctx
->Driver
.BufferSubData( ctx
, offset
, size
, data
, bufObj
);
957 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
958 GLsizeiptrARB size
, void * data
)
960 GET_CURRENT_CONTEXT(ctx
);
961 struct gl_buffer_object
*bufObj
;
962 ASSERT_OUTSIDE_BEGIN_END(ctx
);
964 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
965 "glGetBufferSubDataARB" );
967 /* error already recorded */
971 ASSERT(ctx
->Driver
.GetBufferSubData
);
972 ctx
->Driver
.GetBufferSubData( ctx
, offset
, size
, data
, bufObj
);
977 _mesa_MapBufferARB(GLenum target
, GLenum access
)
979 GET_CURRENT_CONTEXT(ctx
);
980 struct gl_buffer_object
* bufObj
;
981 GLbitfield accessFlags
;
984 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
987 case GL_READ_ONLY_ARB
:
988 accessFlags
= GL_MAP_READ_BIT
;
990 case GL_WRITE_ONLY_ARB
:
991 accessFlags
= GL_MAP_WRITE_BIT
;
993 case GL_READ_WRITE_ARB
:
994 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
997 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1001 bufObj
= get_buffer(ctx
, target
);
1003 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(target)" );
1006 if (!_mesa_is_bufferobj(bufObj
)) {
1007 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(buffer 0)" );
1010 if (_mesa_bufferobj_mapped(bufObj
)) {
1011 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1015 if (!bufObj
->Size
) {
1016 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1017 "glMapBuffer(buffer size = 0)");
1021 ASSERT(ctx
->Driver
.MapBufferRange
);
1022 map
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
, accessFlags
, bufObj
);
1024 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1028 /* The driver callback should have set these fields.
1029 * This is important because other modules (like VBO) might call
1030 * the driver function directly.
1032 ASSERT(bufObj
->Pointer
== map
);
1033 ASSERT(bufObj
->Length
== bufObj
->Size
);
1034 ASSERT(bufObj
->Offset
== 0);
1035 bufObj
->AccessFlags
= accessFlags
;
1038 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1039 bufObj
->Written
= GL_TRUE
;
1042 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1043 bufObj
->Name
, bufObj
->Size
, access
);
1044 if (access
== GL_WRITE_ONLY_ARB
) {
1046 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1047 for (i
= 0; i
< bufObj
->Size
; i
++)
1054 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1056 /* buffer is 100 bytes larger than requested, fill with magic value */
1057 for (i
= 0; i
< 100; i
++) {
1058 buf
[bufObj
->Size
- i
- 1] = 123;
1063 return bufObj
->Pointer
;
1067 GLboolean GLAPIENTRY
1068 _mesa_UnmapBufferARB(GLenum target
)
1070 GET_CURRENT_CONTEXT(ctx
);
1071 struct gl_buffer_object
*bufObj
;
1072 GLboolean status
= GL_TRUE
;
1073 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1075 bufObj
= get_buffer(ctx
, target
);
1077 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1080 if (!_mesa_is_bufferobj(bufObj
)) {
1081 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1084 if (!_mesa_bufferobj_mapped(bufObj
)) {
1085 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1090 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1091 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1093 /* check that last 100 bytes are still = magic value */
1094 for (i
= 0; i
< 100; i
++) {
1095 GLuint pos
= bufObj
->Size
- i
- 1;
1096 if (buf
[pos
] != 123) {
1097 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1098 " at position %d (value = %u)\n",
1106 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1107 GLuint i
, unchanged
= 0;
1108 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1110 /* check which bytes changed */
1111 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1112 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1119 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1120 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1125 status
= ctx
->Driver
.UnmapBuffer( ctx
, bufObj
);
1126 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1127 ASSERT(bufObj
->Pointer
== NULL
);
1128 ASSERT(bufObj
->Offset
== 0);
1129 ASSERT(bufObj
->Length
== 0);
1136 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1138 GET_CURRENT_CONTEXT(ctx
);
1139 struct gl_buffer_object
*bufObj
;
1140 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1142 bufObj
= get_buffer(ctx
, target
);
1144 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1147 if (!_mesa_is_bufferobj(bufObj
)) {
1148 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1153 case GL_BUFFER_SIZE_ARB
:
1154 *params
= (GLint
) bufObj
->Size
;
1156 case GL_BUFFER_USAGE_ARB
:
1157 *params
= bufObj
->Usage
;
1159 case GL_BUFFER_ACCESS_ARB
:
1160 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1162 case GL_BUFFER_MAPPED_ARB
:
1163 *params
= _mesa_bufferobj_mapped(bufObj
);
1165 case GL_BUFFER_ACCESS_FLAGS
:
1166 if (ctx
->VersionMajor
< 3)
1168 *params
= bufObj
->AccessFlags
;
1170 case GL_BUFFER_MAP_OFFSET
:
1171 if (ctx
->VersionMajor
< 3)
1173 *params
= (GLint
) bufObj
->Offset
;
1175 case GL_BUFFER_MAP_LENGTH
:
1176 if (ctx
->VersionMajor
< 3)
1178 *params
= (GLint
) bufObj
->Length
;
1181 ; /* fall-through */
1185 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1186 _mesa_lookup_enum_by_nr(pname
));
1192 * This is pretty much a duplicate of GetBufferParameteriv() but the
1193 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1196 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1198 GET_CURRENT_CONTEXT(ctx
);
1199 struct gl_buffer_object
*bufObj
;
1200 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1202 bufObj
= get_buffer(ctx
, target
);
1204 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1207 if (!_mesa_is_bufferobj(bufObj
)) {
1208 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1213 case GL_BUFFER_SIZE_ARB
:
1214 *params
= bufObj
->Size
;
1216 case GL_BUFFER_USAGE_ARB
:
1217 *params
= bufObj
->Usage
;
1219 case GL_BUFFER_ACCESS_ARB
:
1220 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1222 case GL_BUFFER_ACCESS_FLAGS
:
1223 if (ctx
->VersionMajor
< 3)
1225 *params
= bufObj
->AccessFlags
;
1227 case GL_BUFFER_MAPPED_ARB
:
1228 *params
= _mesa_bufferobj_mapped(bufObj
);
1230 case GL_BUFFER_MAP_OFFSET
:
1231 if (ctx
->VersionMajor
< 3)
1233 *params
= bufObj
->Offset
;
1235 case GL_BUFFER_MAP_LENGTH
:
1236 if (ctx
->VersionMajor
< 3)
1238 *params
= bufObj
->Length
;
1241 ; /* fall-through */
1245 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1246 _mesa_lookup_enum_by_nr(pname
));
1251 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1253 GET_CURRENT_CONTEXT(ctx
);
1254 struct gl_buffer_object
* bufObj
;
1255 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1257 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1258 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1262 bufObj
= get_buffer(ctx
, target
);
1264 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1267 if (!_mesa_is_bufferobj(bufObj
)) {
1268 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1272 *params
= bufObj
->Pointer
;
1277 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1278 GLintptr readOffset
, GLintptr writeOffset
,
1281 GET_CURRENT_CONTEXT(ctx
);
1282 struct gl_buffer_object
*src
, *dst
;
1283 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1285 src
= get_buffer(ctx
, readTarget
);
1286 if (!_mesa_is_bufferobj(src
)) {
1287 _mesa_error(ctx
, GL_INVALID_ENUM
,
1288 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1292 dst
= get_buffer(ctx
, writeTarget
);
1293 if (!_mesa_is_bufferobj(dst
)) {
1294 _mesa_error(ctx
, GL_INVALID_ENUM
,
1295 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1299 if (_mesa_bufferobj_mapped(src
)) {
1300 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1301 "glCopyBuffserSubData(readBuffer is mapped)");
1305 if (_mesa_bufferobj_mapped(dst
)) {
1306 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1307 "glCopyBuffserSubData(writeBuffer is mapped)");
1311 if (readOffset
< 0) {
1312 _mesa_error(ctx
, GL_INVALID_VALUE
,
1313 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1317 if (writeOffset
< 0) {
1318 _mesa_error(ctx
, GL_INVALID_VALUE
,
1319 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1323 if (readOffset
+ size
> src
->Size
) {
1324 _mesa_error(ctx
, GL_INVALID_VALUE
,
1325 "glCopyBuffserSubData(readOffset + size = %d)",
1326 (int) (readOffset
+ size
));
1330 if (writeOffset
+ size
> dst
->Size
) {
1331 _mesa_error(ctx
, GL_INVALID_VALUE
,
1332 "glCopyBuffserSubData(writeOffset + size = %d)",
1333 (int) (writeOffset
+ size
));
1338 if (readOffset
+ size
<= writeOffset
) {
1341 else if (writeOffset
+ size
<= readOffset
) {
1345 /* overlapping src/dst is illegal */
1346 _mesa_error(ctx
, GL_INVALID_VALUE
,
1347 "glCopyBuffserSubData(overlapping src/dst)");
1352 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1357 * See GL_ARB_map_buffer_range spec
1360 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1363 GET_CURRENT_CONTEXT(ctx
);
1364 struct gl_buffer_object
*bufObj
;
1367 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1369 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1370 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1371 "glMapBufferRange(extension not supported)");
1376 _mesa_error(ctx
, GL_INVALID_VALUE
,
1377 "glMapBufferRange(offset = %ld)", (long)offset
);
1382 _mesa_error(ctx
, GL_INVALID_VALUE
,
1383 "glMapBufferRange(length = %ld)", (long)length
);
1387 if (access
& ~(GL_MAP_READ_BIT
|
1389 GL_MAP_INVALIDATE_RANGE_BIT
|
1390 GL_MAP_INVALIDATE_BUFFER_BIT
|
1391 GL_MAP_FLUSH_EXPLICIT_BIT
|
1392 GL_MAP_UNSYNCHRONIZED_BIT
)) {
1393 /* generate an error if any undefind bit is set */
1394 _mesa_error(ctx
, GL_INVALID_VALUE
, "glMapBufferRange(access)");
1398 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1399 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1400 "glMapBufferRange(access indicates neither read or write)");
1404 if ((access
& GL_MAP_READ_BIT
) &&
1405 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
1406 GL_MAP_INVALIDATE_BUFFER_BIT
|
1407 GL_MAP_UNSYNCHRONIZED_BIT
))) {
1408 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1409 "glMapBufferRange(invalid access flags)");
1413 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1414 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1415 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1416 "glMapBufferRange(invalid access flags)");
1420 bufObj
= get_buffer(ctx
, target
);
1421 if (!_mesa_is_bufferobj(bufObj
)) {
1422 _mesa_error(ctx
, GL_INVALID_ENUM
,
1423 "glMapBufferRange(target = 0x%x)", target
);
1427 if (offset
+ length
> bufObj
->Size
) {
1428 _mesa_error(ctx
, GL_INVALID_VALUE
,
1429 "glMapBufferRange(offset + length > size)");
1433 if (_mesa_bufferobj_mapped(bufObj
)) {
1434 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1435 "glMapBufferRange(buffer already mapped)");
1439 if (!bufObj
->Size
) {
1440 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1441 "glMapBufferRange(buffer size = 0)");
1445 /* Mapping zero bytes should return a non-null pointer. */
1447 static long dummy
= 0;
1448 bufObj
->Pointer
= &dummy
;
1449 bufObj
->Length
= length
;
1450 bufObj
->Offset
= offset
;
1451 bufObj
->AccessFlags
= access
;
1452 return bufObj
->Pointer
;
1455 ASSERT(ctx
->Driver
.MapBufferRange
);
1456 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
);
1458 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1461 /* The driver callback should have set all these fields.
1462 * This is important because other modules (like VBO) might call
1463 * the driver function directly.
1465 ASSERT(bufObj
->Pointer
== map
);
1466 ASSERT(bufObj
->Length
== length
);
1467 ASSERT(bufObj
->Offset
== offset
);
1468 ASSERT(bufObj
->AccessFlags
== access
);
1476 * See GL_ARB_map_buffer_range spec
1479 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1481 GET_CURRENT_CONTEXT(ctx
);
1482 struct gl_buffer_object
*bufObj
;
1483 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1485 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1486 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1487 "glMapBufferRange(extension not supported)");
1492 _mesa_error(ctx
, GL_INVALID_VALUE
,
1493 "glMapBufferRange(offset = %ld)", (long)offset
);
1498 _mesa_error(ctx
, GL_INVALID_VALUE
,
1499 "glMapBufferRange(length = %ld)", (long)length
);
1503 bufObj
= get_buffer(ctx
, target
);
1505 _mesa_error(ctx
, GL_INVALID_ENUM
,
1506 "glMapBufferRange(target = 0x%x)", target
);
1510 if (!_mesa_is_bufferobj(bufObj
)) {
1511 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1512 "glMapBufferRange(current buffer is 0)");
1516 if (!_mesa_bufferobj_mapped(bufObj
)) {
1517 /* buffer is not mapped */
1518 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1519 "glMapBufferRange(buffer is not mapped)");
1523 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1524 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1525 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1529 if (offset
+ length
> bufObj
->Length
) {
1530 _mesa_error(ctx
, GL_INVALID_VALUE
,
1531 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1532 (long)offset
, (long)length
, (long)bufObj
->Length
);
1536 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1538 if (ctx
->Driver
.FlushMappedBufferRange
)
1539 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
);
1543 #if FEATURE_APPLE_object_purgeable
1545 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1547 struct gl_buffer_object
*bufObj
;
1550 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1552 _mesa_error(ctx
, GL_INVALID_VALUE
,
1553 "glObjectPurgeable(name = 0x%x)", name
);
1556 if (!_mesa_is_bufferobj(bufObj
)) {
1557 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1561 if (bufObj
->Purgeable
) {
1562 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1563 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1564 return GL_VOLATILE_APPLE
;
1567 bufObj
->Purgeable
= GL_TRUE
;
1569 retval
= GL_VOLATILE_APPLE
;
1570 if (ctx
->Driver
.BufferObjectPurgeable
)
1571 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1578 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1580 struct gl_renderbuffer
*bufObj
;
1583 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1585 _mesa_error(ctx
, GL_INVALID_VALUE
,
1586 "glObjectUnpurgeable(name = 0x%x)", name
);
1590 if (bufObj
->Purgeable
) {
1591 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1592 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1593 return GL_VOLATILE_APPLE
;
1596 bufObj
->Purgeable
= GL_TRUE
;
1598 retval
= GL_VOLATILE_APPLE
;
1599 if (ctx
->Driver
.RenderObjectPurgeable
)
1600 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1607 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1609 struct gl_texture_object
*bufObj
;
1612 bufObj
= _mesa_lookup_texture(ctx
, name
);
1614 _mesa_error(ctx
, GL_INVALID_VALUE
,
1615 "glObjectPurgeable(name = 0x%x)", name
);
1619 if (bufObj
->Purgeable
) {
1620 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1621 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1622 return GL_VOLATILE_APPLE
;
1625 bufObj
->Purgeable
= GL_TRUE
;
1627 retval
= GL_VOLATILE_APPLE
;
1628 if (ctx
->Driver
.TextureObjectPurgeable
)
1629 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1636 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1640 GET_CURRENT_CONTEXT(ctx
);
1641 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1644 _mesa_error(ctx
, GL_INVALID_VALUE
,
1645 "glObjectPurgeable(name = 0x%x)", name
);
1650 case GL_VOLATILE_APPLE
:
1651 case GL_RELEASED_APPLE
:
1655 _mesa_error(ctx
, GL_INVALID_ENUM
,
1656 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1661 switch (objectType
) {
1663 retval
= texture_object_purgeable(ctx
, name
, option
);
1665 case GL_RENDERBUFFER_EXT
:
1666 retval
= renderbuffer_purgeable(ctx
, name
, option
);
1668 case GL_BUFFER_OBJECT_APPLE
:
1669 retval
= buffer_object_purgeable(ctx
, name
, option
);
1672 _mesa_error(ctx
, GL_INVALID_ENUM
,
1673 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1678 /* In strict conformance to the spec, we must only return VOLATILE when
1679 * when passed the VOLATILE option. Madness.
1681 * XXX First fix the spec, then fix me.
1683 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1688 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1690 struct gl_buffer_object
*bufObj
;
1693 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1695 _mesa_error(ctx
, GL_INVALID_VALUE
,
1696 "glObjectUnpurgeable(name = 0x%x)", name
);
1700 if (! bufObj
->Purgeable
) {
1701 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1702 "glObjectUnpurgeable(name = 0x%x) object is "
1703 " already \"unpurged\"", name
);
1707 bufObj
->Purgeable
= GL_FALSE
;
1710 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1711 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1718 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1720 struct gl_renderbuffer
*bufObj
;
1723 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1725 _mesa_error(ctx
, GL_INVALID_VALUE
,
1726 "glObjectUnpurgeable(name = 0x%x)", name
);
1730 if (! bufObj
->Purgeable
) {
1731 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1732 "glObjectUnpurgeable(name = 0x%x) object is "
1733 " already \"unpurged\"", name
);
1737 bufObj
->Purgeable
= GL_FALSE
;
1740 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1741 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1748 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1750 struct gl_texture_object
*bufObj
;
1753 bufObj
= _mesa_lookup_texture(ctx
, name
);
1755 _mesa_error(ctx
, GL_INVALID_VALUE
,
1756 "glObjectUnpurgeable(name = 0x%x)", name
);
1760 if (! bufObj
->Purgeable
) {
1761 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1762 "glObjectUnpurgeable(name = 0x%x) object is"
1763 " already \"unpurged\"", name
);
1767 bufObj
->Purgeable
= GL_FALSE
;
1770 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1771 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1778 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1780 GET_CURRENT_CONTEXT(ctx
);
1781 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1784 _mesa_error(ctx
, GL_INVALID_VALUE
,
1785 "glObjectUnpurgeable(name = 0x%x)", name
);
1790 case GL_RETAINED_APPLE
:
1791 case GL_UNDEFINED_APPLE
:
1795 _mesa_error(ctx
, GL_INVALID_ENUM
,
1796 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1801 switch (objectType
) {
1802 case GL_BUFFER_OBJECT_APPLE
:
1803 return buffer_object_unpurgeable(ctx
, name
, option
);
1805 return texture_object_unpurgeable(ctx
, name
, option
);
1806 case GL_RENDERBUFFER_EXT
:
1807 return renderbuffer_unpurgeable(ctx
, name
, option
);
1809 _mesa_error(ctx
, GL_INVALID_ENUM
,
1810 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1818 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1819 GLenum pname
, GLint
*params
)
1821 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1823 _mesa_error(ctx
, GL_INVALID_VALUE
,
1824 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1829 case GL_PURGEABLE_APPLE
:
1830 *params
= bufObj
->Purgeable
;
1833 _mesa_error(ctx
, GL_INVALID_ENUM
,
1834 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1842 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
1843 GLenum pname
, GLint
*params
)
1845 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
1847 _mesa_error(ctx
, GL_INVALID_VALUE
,
1848 "glObjectUnpurgeable(name = 0x%x)", name
);
1853 case GL_PURGEABLE_APPLE
:
1854 *params
= rb
->Purgeable
;
1857 _mesa_error(ctx
, GL_INVALID_ENUM
,
1858 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1866 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1867 GLenum pname
, GLint
*params
)
1869 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
1871 _mesa_error(ctx
, GL_INVALID_VALUE
,
1872 "glObjectUnpurgeable(name = 0x%x)", name
);
1877 case GL_PURGEABLE_APPLE
:
1878 *params
= texObj
->Purgeable
;
1881 _mesa_error(ctx
, GL_INVALID_ENUM
,
1882 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1890 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
1893 GET_CURRENT_CONTEXT(ctx
);
1896 _mesa_error(ctx
, GL_INVALID_VALUE
,
1897 "glGetObjectParameteriv(name = 0x%x)", name
);
1901 switch (objectType
) {
1903 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
1905 case GL_BUFFER_OBJECT_APPLE
:
1906 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
1908 case GL_RENDERBUFFER_EXT
:
1909 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
1912 _mesa_error(ctx
, GL_INVALID_ENUM
,
1913 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1918 #endif /* FEATURE_APPLE_object_purgeable */