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
;
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.
246 _mesa_reference_buffer_object(struct gl_context
*ctx
,
247 struct gl_buffer_object
**ptr
,
248 struct gl_buffer_object
*bufObj
)
254 /* Unreference the old buffer */
255 GLboolean deleteFlag
= GL_FALSE
;
256 struct gl_buffer_object
*oldObj
= *ptr
;
258 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
259 ASSERT(oldObj
->RefCount
> 0);
262 printf("BufferObj %p %d DECR to %d\n",
263 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
265 deleteFlag
= (oldObj
->RefCount
== 0);
266 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
270 /* some sanity checking: don't delete a buffer still in use */
272 /* unfortunately, these tests are invalid during context tear-down */
273 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
274 ASSERT(ctx
->Array
.ElementArrayBufferObj
!= bufObj
);
275 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
278 ASSERT(ctx
->Driver
.DeleteBuffer
);
279 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
287 /* reference new buffer */
288 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
289 if (bufObj
->RefCount
== 0) {
290 /* this buffer's being deleted (look just above) */
291 /* Not sure this can every really happen. Warn if it does. */
292 _mesa_problem(NULL
, "referencing deleted buffer object");
298 printf("BufferObj %p %d INCR to %d\n",
299 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
303 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
309 * Initialize a buffer object to default values.
312 _mesa_initialize_buffer_object( struct gl_buffer_object
*obj
,
313 GLuint name
, GLenum target
)
317 memset(obj
, 0, sizeof(struct gl_buffer_object
));
318 _glthread_INIT_MUTEX(obj
->Mutex
);
321 obj
->Usage
= GL_STATIC_DRAW_ARB
;
322 obj
->AccessFlags
= DEFAULT_ACCESS
;
327 * Allocate space for and store data in a buffer object. Any data that was
328 * previously stored in the buffer object is lost. If \c data is \c NULL,
329 * memory will be allocated, but no copy will occur.
331 * This is the default callback for \c dd_function_table::BufferData()
332 * Note that all GL error checking will have been done already.
334 * \param ctx GL context.
335 * \param target Buffer object target on which to operate.
336 * \param size Size, in bytes, of the new data store.
337 * \param data Pointer to the data to store in the buffer object. This
338 * pointer may be \c NULL.
339 * \param usage Hints about how the data will be used.
340 * \param bufObj Object to be used.
342 * \return GL_TRUE for success, GL_FALSE for failure
343 * \sa glBufferDataARB, dd_function_table::BufferData.
346 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
347 const GLvoid
* data
, GLenum usage
,
348 struct gl_buffer_object
* bufObj
)
352 (void) ctx
; (void) target
;
354 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
356 bufObj
->Data
= (GLubyte
*) new_data
;
358 bufObj
->Usage
= usage
;
361 memcpy( bufObj
->Data
, data
, size
);
373 * Replace data in a subrange of buffer object. If the data range
374 * specified by \c size + \c offset extends beyond the end of the buffer or
375 * if \c data is \c NULL, no copy is performed.
377 * This is the default callback for \c dd_function_table::BufferSubData()
378 * Note that all GL error checking will have been done already.
380 * \param ctx GL context.
381 * \param target Buffer object target on which to operate.
382 * \param offset Offset of the first byte to be modified.
383 * \param size Size, in bytes, of the data range.
384 * \param data Pointer to the data to store in the buffer object.
385 * \param bufObj Object to be used.
387 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
390 _mesa_buffer_subdata( struct gl_context
*ctx
, GLenum target
, GLintptrARB offset
,
391 GLsizeiptrARB size
, const GLvoid
* data
,
392 struct gl_buffer_object
* bufObj
)
394 (void) ctx
; (void) target
;
396 /* this should have been caught in _mesa_BufferSubData() */
397 ASSERT(size
+ offset
<= bufObj
->Size
);
400 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
406 * Retrieve data from a subrange of buffer object. If the data range
407 * specified by \c size + \c offset extends beyond the end of the buffer or
408 * if \c data is \c NULL, no copy is performed.
410 * This is the default callback for \c dd_function_table::GetBufferSubData()
411 * Note that all GL error checking will have been done already.
413 * \param ctx GL context.
414 * \param target Buffer object target on which to operate.
415 * \param offset Offset of the first byte to be fetched.
416 * \param size Size, in bytes, of the data range.
417 * \param data Destination for data
418 * \param bufObj Object to be used.
420 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
423 _mesa_buffer_get_subdata( struct gl_context
*ctx
,
424 GLenum target
, GLintptrARB offset
,
425 GLsizeiptrARB size
, GLvoid
* data
,
426 struct gl_buffer_object
* bufObj
)
428 (void) ctx
; (void) target
;
430 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
431 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
437 * Default callback for \c dd_function_tabel::MapBuffer().
439 * The function parameters will have been already tested for errors.
441 * \param ctx GL context.
442 * \param target Buffer object target on which to operate.
443 * \param access Information about how the buffer will be accessed.
444 * \param bufObj Object to be mapped.
445 * \return A pointer to the object's internal data store that can be accessed
448 * \sa glMapBufferARB, dd_function_table::MapBuffer
451 _mesa_buffer_map( struct gl_context
*ctx
, GLenum target
, GLenum access
,
452 struct gl_buffer_object
*bufObj
)
457 /* Just return a direct pointer to the data */
458 if (_mesa_bufferobj_mapped(bufObj
)) {
459 /* already mapped! */
462 bufObj
->Pointer
= bufObj
->Data
;
463 bufObj
->Length
= bufObj
->Size
;
465 return bufObj
->Pointer
;
470 * Default fallback for \c dd_function_table::MapBufferRange().
471 * Called via glMapBufferRange().
474 _mesa_buffer_map_range( struct gl_context
*ctx
, GLenum target
, GLintptr offset
,
475 GLsizeiptr length
, GLbitfield access
,
476 struct gl_buffer_object
*bufObj
)
480 assert(!_mesa_bufferobj_mapped(bufObj
));
481 /* Just return a direct pointer to the data */
482 bufObj
->Pointer
= bufObj
->Data
+ offset
;
483 bufObj
->Length
= length
;
484 bufObj
->Offset
= offset
;
485 bufObj
->AccessFlags
= access
;
486 return bufObj
->Pointer
;
491 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
492 * Called via glFlushMappedBufferRange().
495 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
, GLenum target
,
496 GLintptr offset
, GLsizeiptr length
,
497 struct gl_buffer_object
*obj
)
509 * Default callback for \c dd_function_table::MapBuffer().
511 * The input parameters will have been already tested for errors.
513 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
516 _mesa_buffer_unmap( struct gl_context
*ctx
, GLenum target
,
517 struct gl_buffer_object
*bufObj
)
521 /* XXX we might assert here that bufObj->Pointer is non-null */
522 bufObj
->Pointer
= NULL
;
525 bufObj
->AccessFlags
= 0x0;
531 * Default fallback for \c dd_function_table::CopyBufferSubData().
532 * Called via glCopyBuffserSubData().
535 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
536 struct gl_buffer_object
*src
,
537 struct gl_buffer_object
*dst
,
538 GLintptr readOffset
, GLintptr writeOffset
,
541 GLubyte
*srcPtr
, *dstPtr
;
543 /* buffer should not already be mapped */
544 assert(!_mesa_bufferobj_mapped(src
));
545 assert(!_mesa_bufferobj_mapped(dst
));
547 srcPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_READ_BUFFER
,
549 dstPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_WRITE_BUFFER
,
552 if (srcPtr
&& dstPtr
)
553 memcpy(dstPtr
+ writeOffset
, srcPtr
+ readOffset
, size
);
555 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_READ_BUFFER
, src
);
556 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_WRITE_BUFFER
, dst
);
562 * Initialize the state associated with buffer objects
565 _mesa_init_buffer_objects( struct gl_context
*ctx
)
567 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
568 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
569 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
571 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
572 ctx
->Shared
->NullBufferObj
);
573 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
,
574 ctx
->Shared
->NullBufferObj
);
576 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
577 ctx
->Shared
->NullBufferObj
);
578 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
579 ctx
->Shared
->NullBufferObj
);
584 _mesa_free_buffer_objects( struct gl_context
*ctx
)
586 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
587 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
, NULL
);
589 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
590 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
595 * Bind the specified target to buffer for the specified context.
596 * Called by glBindBuffer() and other functions.
599 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
601 struct gl_buffer_object
*oldBufObj
;
602 struct gl_buffer_object
*newBufObj
= NULL
;
603 struct gl_buffer_object
**bindTarget
= NULL
;
605 bindTarget
= get_buffer_target(ctx
, target
);
607 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
611 /* Get pointer to old buffer object (to be unbound) */
612 oldBufObj
= *bindTarget
;
613 if (oldBufObj
&& oldBufObj
->Name
== buffer
)
614 return; /* rebinding the same buffer object- no change */
617 * Get pointer to new buffer object (newBufObj)
620 /* The spec says there's not a buffer object named 0, but we use
621 * one internally because it simplifies things.
623 newBufObj
= ctx
->Shared
->NullBufferObj
;
626 /* non-default buffer object */
627 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
628 if (!newBufObj
|| newBufObj
== &DummyBufferObject
) {
629 /* If this is a new buffer object id, or one which was generated but
630 * never used before, allocate a buffer object now.
632 ASSERT(ctx
->Driver
.NewBufferObject
);
633 newBufObj
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
635 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
638 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, newBufObj
);
642 /* bind new buffer */
643 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
645 /* Pass BindBuffer call to device driver */
646 if (ctx
->Driver
.BindBuffer
)
647 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
652 * Update the default buffer objects in the given context to reference those
653 * specified in the shared state and release those referencing the old
657 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
659 /* Bind the NullBufferObj to remove references to those
660 * in the shared context hash table.
662 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
663 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
664 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
665 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
671 * Return the gl_buffer_object for the given ID.
672 * Always return NULL for ID 0.
674 struct gl_buffer_object
*
675 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
680 return (struct gl_buffer_object
*)
681 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
686 * If *ptr points to obj, set ptr = the Null/default buffer object.
687 * This is a helper for buffer object deletion.
688 * The GL spec says that deleting a buffer object causes it to get
689 * unbound from all arrays in the current context.
692 unbind(struct gl_context
*ctx
,
693 struct gl_buffer_object
**ptr
,
694 struct gl_buffer_object
*obj
)
697 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
703 * Plug default/fallback buffer object functions into the device
707 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
709 /* GL_ARB_vertex/pixel_buffer_object */
710 driver
->NewBufferObject
= _mesa_new_buffer_object
;
711 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
712 driver
->BindBuffer
= NULL
;
713 driver
->BufferData
= _mesa_buffer_data
;
714 driver
->BufferSubData
= _mesa_buffer_subdata
;
715 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
716 driver
->MapBuffer
= _mesa_buffer_map
;
717 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
719 /* GL_ARB_map_buffer_range */
720 driver
->MapBufferRange
= _mesa_buffer_map_range
;
721 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
723 /* GL_ARB_copy_buffer */
724 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
729 /**********************************************************************/
731 /**********************************************************************/
734 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
736 GET_CURRENT_CONTEXT(ctx
);
737 ASSERT_OUTSIDE_BEGIN_END(ctx
);
739 if (MESA_VERBOSE
& VERBOSE_API
)
740 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
741 _mesa_lookup_enum_by_nr(target
), buffer
);
743 bind_buffer_object(ctx
, target
, buffer
);
748 * Delete a set of buffer objects.
750 * \param n Number of buffer objects to delete.
751 * \param ids Array of \c n buffer object IDs.
754 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
756 GET_CURRENT_CONTEXT(ctx
);
758 ASSERT_OUTSIDE_BEGIN_END(ctx
);
759 FLUSH_VERTICES(ctx
, 0);
762 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
766 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
768 for (i
= 0; i
< n
; i
++) {
769 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
771 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
774 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
776 if (_mesa_bufferobj_mapped(bufObj
)) {
777 /* if mapped, unmap it now */
778 ctx
->Driver
.UnmapBuffer(ctx
, 0, bufObj
);
779 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
780 bufObj
->Pointer
= NULL
;
783 /* unbind any vertex pointers bound to this buffer */
784 unbind(ctx
, &arrayObj
->Vertex
.BufferObj
, bufObj
);
785 unbind(ctx
, &arrayObj
->Weight
.BufferObj
, bufObj
);
786 unbind(ctx
, &arrayObj
->Normal
.BufferObj
, bufObj
);
787 unbind(ctx
, &arrayObj
->Color
.BufferObj
, bufObj
);
788 unbind(ctx
, &arrayObj
->SecondaryColor
.BufferObj
, bufObj
);
789 unbind(ctx
, &arrayObj
->FogCoord
.BufferObj
, bufObj
);
790 unbind(ctx
, &arrayObj
->Index
.BufferObj
, bufObj
);
791 unbind(ctx
, &arrayObj
->EdgeFlag
.BufferObj
, bufObj
);
792 for (j
= 0; j
< Elements(arrayObj
->TexCoord
); j
++) {
793 unbind(ctx
, &arrayObj
->TexCoord
[j
].BufferObj
, bufObj
);
795 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
796 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
799 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
800 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
802 if (ctx
->Array
.ElementArrayBufferObj
== bufObj
) {
803 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
806 /* unbind any pixel pack/unpack pointers bound to this buffer */
807 if (ctx
->Pack
.BufferObj
== bufObj
) {
808 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
810 if (ctx
->Unpack
.BufferObj
== bufObj
) {
811 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
814 /* The ID is immediately freed for re-use */
815 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
816 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
820 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
825 * Generate a set of unique buffer object IDs and store them in \c buffer.
827 * \param n Number of IDs to generate.
828 * \param buffer Array of \c n locations to store the IDs.
831 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
833 GET_CURRENT_CONTEXT(ctx
);
836 ASSERT_OUTSIDE_BEGIN_END(ctx
);
838 if (MESA_VERBOSE
& VERBOSE_API
)
839 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
842 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
851 * This must be atomic (generation and allocation of buffer object IDs)
853 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
855 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
857 /* Insert the ID and pointer to dummy buffer object into hash table */
858 for (i
= 0; i
< n
; i
++) {
859 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
861 buffer
[i
] = first
+ i
;
864 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
869 * Determine if ID is the name of a buffer object.
871 * \param id ID of the potential buffer object.
872 * \return \c GL_TRUE if \c id is the name of a buffer object,
873 * \c GL_FALSE otherwise.
876 _mesa_IsBufferARB(GLuint id
)
878 struct gl_buffer_object
*bufObj
;
879 GET_CURRENT_CONTEXT(ctx
);
880 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
882 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
883 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
884 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
886 return bufObj
&& bufObj
!= &DummyBufferObject
;
891 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
892 const GLvoid
* data
, GLenum usage
)
894 GET_CURRENT_CONTEXT(ctx
);
895 struct gl_buffer_object
*bufObj
;
896 ASSERT_OUTSIDE_BEGIN_END(ctx
);
898 if (MESA_VERBOSE
& VERBOSE_API
)
899 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
900 _mesa_lookup_enum_by_nr(target
),
901 (long int) size
, data
,
902 _mesa_lookup_enum_by_nr(usage
));
905 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
910 case GL_STREAM_DRAW_ARB
:
911 case GL_STREAM_READ_ARB
:
912 case GL_STREAM_COPY_ARB
:
913 case GL_STATIC_DRAW_ARB
:
914 case GL_STATIC_READ_ARB
:
915 case GL_STATIC_COPY_ARB
:
916 case GL_DYNAMIC_DRAW_ARB
:
917 case GL_DYNAMIC_READ_ARB
:
918 case GL_DYNAMIC_COPY_ARB
:
922 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(usage)");
926 bufObj
= get_buffer(ctx
, target
);
928 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(target)" );
931 if (!_mesa_is_bufferobj(bufObj
)) {
932 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBufferDataARB(buffer 0)" );
936 if (_mesa_bufferobj_mapped(bufObj
)) {
937 /* Unmap the existing buffer. We'll replace it now. Not an error. */
938 ctx
->Driver
.UnmapBuffer(ctx
, target
, bufObj
);
939 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
940 ASSERT(bufObj
->Pointer
== NULL
);
943 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
945 bufObj
->Written
= GL_TRUE
;
948 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
949 bufObj
->Name
, size
, data
, usage
);
956 ASSERT(ctx
->Driver
.BufferData
);
957 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
958 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
964 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
965 GLsizeiptrARB size
, const GLvoid
* data
)
967 GET_CURRENT_CONTEXT(ctx
);
968 struct gl_buffer_object
*bufObj
;
969 ASSERT_OUTSIDE_BEGIN_END(ctx
);
971 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
972 "glBufferSubDataARB" );
974 /* error already recorded */
981 bufObj
->Written
= GL_TRUE
;
983 ASSERT(ctx
->Driver
.BufferSubData
);
984 ctx
->Driver
.BufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
989 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
990 GLsizeiptrARB size
, void * data
)
992 GET_CURRENT_CONTEXT(ctx
);
993 struct gl_buffer_object
*bufObj
;
994 ASSERT_OUTSIDE_BEGIN_END(ctx
);
996 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
997 "glGetBufferSubDataARB" );
999 /* error already recorded */
1003 ASSERT(ctx
->Driver
.GetBufferSubData
);
1004 ctx
->Driver
.GetBufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
1009 _mesa_MapBufferARB(GLenum target
, GLenum access
)
1011 GET_CURRENT_CONTEXT(ctx
);
1012 struct gl_buffer_object
* bufObj
;
1013 GLbitfield accessFlags
;
1016 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1019 case GL_READ_ONLY_ARB
:
1020 accessFlags
= GL_MAP_READ_BIT
;
1022 case GL_WRITE_ONLY_ARB
:
1023 accessFlags
= GL_MAP_WRITE_BIT
;
1025 case GL_READ_WRITE_ARB
:
1026 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1029 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1033 bufObj
= get_buffer(ctx
, target
);
1035 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(target)" );
1038 if (!_mesa_is_bufferobj(bufObj
)) {
1039 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(buffer 0)" );
1042 if (_mesa_bufferobj_mapped(bufObj
)) {
1043 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1047 ASSERT(ctx
->Driver
.MapBuffer
);
1048 map
= ctx
->Driver
.MapBuffer( ctx
, target
, access
, bufObj
);
1050 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1054 /* The driver callback should have set these fields.
1055 * This is important because other modules (like VBO) might call
1056 * the driver function directly.
1058 ASSERT(bufObj
->Pointer
== map
);
1059 ASSERT(bufObj
->Length
== bufObj
->Size
);
1060 ASSERT(bufObj
->Offset
== 0);
1061 bufObj
->AccessFlags
= accessFlags
;
1064 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1065 bufObj
->Written
= GL_TRUE
;
1068 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1069 bufObj
->Name
, bufObj
->Size
, access
);
1070 if (access
== GL_WRITE_ONLY_ARB
) {
1072 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1073 for (i
= 0; i
< bufObj
->Size
; i
++)
1080 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1082 /* buffer is 100 bytes larger than requested, fill with magic value */
1083 for (i
= 0; i
< 100; i
++) {
1084 buf
[bufObj
->Size
- i
- 1] = 123;
1089 return bufObj
->Pointer
;
1093 GLboolean GLAPIENTRY
1094 _mesa_UnmapBufferARB(GLenum target
)
1096 GET_CURRENT_CONTEXT(ctx
);
1097 struct gl_buffer_object
*bufObj
;
1098 GLboolean status
= GL_TRUE
;
1099 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1101 bufObj
= get_buffer(ctx
, target
);
1103 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1106 if (!_mesa_is_bufferobj(bufObj
)) {
1107 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1110 if (!_mesa_bufferobj_mapped(bufObj
)) {
1111 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1116 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1117 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1119 /* check that last 100 bytes are still = magic value */
1120 for (i
= 0; i
< 100; i
++) {
1121 GLuint pos
= bufObj
->Size
- i
- 1;
1122 if (buf
[pos
] != 123) {
1123 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1124 " at position %d (value = %u)\n",
1132 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1133 GLuint i
, unchanged
= 0;
1134 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1136 /* check which bytes changed */
1137 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1138 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1145 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1146 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1151 status
= ctx
->Driver
.UnmapBuffer( ctx
, target
, bufObj
);
1152 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1153 ASSERT(bufObj
->Pointer
== NULL
);
1154 ASSERT(bufObj
->Offset
== 0);
1155 ASSERT(bufObj
->Length
== 0);
1162 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1164 GET_CURRENT_CONTEXT(ctx
);
1165 struct gl_buffer_object
*bufObj
;
1166 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1168 bufObj
= get_buffer(ctx
, target
);
1170 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1173 if (!_mesa_is_bufferobj(bufObj
)) {
1174 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1179 case GL_BUFFER_SIZE_ARB
:
1180 *params
= (GLint
) bufObj
->Size
;
1182 case GL_BUFFER_USAGE_ARB
:
1183 *params
= bufObj
->Usage
;
1185 case GL_BUFFER_ACCESS_ARB
:
1186 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1188 case GL_BUFFER_MAPPED_ARB
:
1189 *params
= _mesa_bufferobj_mapped(bufObj
);
1191 case GL_BUFFER_ACCESS_FLAGS
:
1192 if (ctx
->VersionMajor
< 3)
1194 *params
= bufObj
->AccessFlags
;
1196 case GL_BUFFER_MAP_OFFSET
:
1197 if (ctx
->VersionMajor
< 3)
1199 *params
= (GLint
) bufObj
->Offset
;
1201 case GL_BUFFER_MAP_LENGTH
:
1202 if (ctx
->VersionMajor
< 3)
1204 *params
= (GLint
) bufObj
->Length
;
1207 ; /* fall-through */
1211 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1212 _mesa_lookup_enum_by_nr(pname
));
1218 * This is pretty much a duplicate of GetBufferParameteriv() but the
1219 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1222 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1224 GET_CURRENT_CONTEXT(ctx
);
1225 struct gl_buffer_object
*bufObj
;
1226 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1228 bufObj
= get_buffer(ctx
, target
);
1230 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1233 if (!_mesa_is_bufferobj(bufObj
)) {
1234 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1239 case GL_BUFFER_SIZE_ARB
:
1240 *params
= bufObj
->Size
;
1242 case GL_BUFFER_USAGE_ARB
:
1243 *params
= bufObj
->Usage
;
1245 case GL_BUFFER_ACCESS_ARB
:
1246 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1248 case GL_BUFFER_ACCESS_FLAGS
:
1249 if (ctx
->VersionMajor
< 3)
1251 *params
= bufObj
->AccessFlags
;
1253 case GL_BUFFER_MAPPED_ARB
:
1254 *params
= _mesa_bufferobj_mapped(bufObj
);
1256 case GL_BUFFER_MAP_OFFSET
:
1257 if (ctx
->VersionMajor
< 3)
1259 *params
= bufObj
->Offset
;
1261 case GL_BUFFER_MAP_LENGTH
:
1262 if (ctx
->VersionMajor
< 3)
1264 *params
= bufObj
->Length
;
1267 ; /* fall-through */
1271 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1272 _mesa_lookup_enum_by_nr(pname
));
1277 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1279 GET_CURRENT_CONTEXT(ctx
);
1280 struct gl_buffer_object
* bufObj
;
1281 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1283 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1284 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1288 bufObj
= get_buffer(ctx
, target
);
1290 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1293 if (!_mesa_is_bufferobj(bufObj
)) {
1294 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1298 *params
= bufObj
->Pointer
;
1303 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1304 GLintptr readOffset
, GLintptr writeOffset
,
1307 GET_CURRENT_CONTEXT(ctx
);
1308 struct gl_buffer_object
*src
, *dst
;
1309 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1311 src
= get_buffer(ctx
, readTarget
);
1312 if (!src
|| !_mesa_is_bufferobj(src
)) {
1313 _mesa_error(ctx
, GL_INVALID_ENUM
,
1314 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1318 dst
= get_buffer(ctx
, writeTarget
);
1319 if (!dst
|| !_mesa_is_bufferobj(dst
)) {
1320 _mesa_error(ctx
, GL_INVALID_ENUM
,
1321 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1325 if (_mesa_bufferobj_mapped(src
)) {
1326 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1327 "glCopyBuffserSubData(readBuffer is mapped)");
1331 if (_mesa_bufferobj_mapped(dst
)) {
1332 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1333 "glCopyBuffserSubData(writeBuffer is mapped)");
1337 if (readOffset
< 0) {
1338 _mesa_error(ctx
, GL_INVALID_VALUE
,
1339 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1343 if (writeOffset
< 0) {
1344 _mesa_error(ctx
, GL_INVALID_VALUE
,
1345 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1349 if (readOffset
+ size
> src
->Size
) {
1350 _mesa_error(ctx
, GL_INVALID_VALUE
,
1351 "glCopyBuffserSubData(readOffset + size = %d)",
1352 (int) (readOffset
+ size
));
1356 if (writeOffset
+ size
> dst
->Size
) {
1357 _mesa_error(ctx
, GL_INVALID_VALUE
,
1358 "glCopyBuffserSubData(writeOffset + size = %d)",
1359 (int) (writeOffset
+ size
));
1364 if (readOffset
+ size
<= writeOffset
) {
1367 else if (writeOffset
+ size
<= readOffset
) {
1371 /* overlapping src/dst is illegal */
1372 _mesa_error(ctx
, GL_INVALID_VALUE
,
1373 "glCopyBuffserSubData(overlapping src/dst)");
1378 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1383 * See GL_ARB_map_buffer_range spec
1386 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1389 GET_CURRENT_CONTEXT(ctx
);
1390 struct gl_buffer_object
*bufObj
;
1393 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1395 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1396 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1397 "glMapBufferRange(extension not supported)");
1402 _mesa_error(ctx
, GL_INVALID_VALUE
,
1403 "glMapBufferRange(offset = %ld)", (long)offset
);
1408 _mesa_error(ctx
, GL_INVALID_VALUE
,
1409 "glMapBufferRange(length = %ld)", (long)length
);
1413 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1414 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1415 "glMapBufferRange(access indicates neither read or write)");
1419 if (access
& GL_MAP_READ_BIT
) {
1420 if ((access
& GL_MAP_INVALIDATE_RANGE_BIT
) ||
1421 (access
& GL_MAP_INVALIDATE_BUFFER_BIT
) ||
1422 (access
& GL_MAP_UNSYNCHRONIZED_BIT
)) {
1423 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1424 "glMapBufferRange(invalid access flags)");
1429 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1430 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1431 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1432 "glMapBufferRange(invalid access flags)");
1436 bufObj
= get_buffer(ctx
, target
);
1437 if (!bufObj
|| !_mesa_is_bufferobj(bufObj
)) {
1438 _mesa_error(ctx
, GL_INVALID_ENUM
,
1439 "glMapBufferRange(target = 0x%x)", target
);
1443 if (offset
+ length
> bufObj
->Size
) {
1444 _mesa_error(ctx
, GL_INVALID_VALUE
,
1445 "glMapBufferRange(offset + length > size)");
1449 if (_mesa_bufferobj_mapped(bufObj
)) {
1450 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1451 "glMapBufferRange(buffer already mapped)");
1455 ASSERT(ctx
->Driver
.MapBufferRange
);
1456 map
= ctx
->Driver
.MapBufferRange(ctx
, target
, offset
, length
,
1459 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1462 /* The driver callback should have set all these fields.
1463 * This is important because other modules (like VBO) might call
1464 * the driver function directly.
1466 ASSERT(bufObj
->Pointer
== map
);
1467 ASSERT(bufObj
->Length
== length
);
1468 ASSERT(bufObj
->Offset
== offset
);
1469 ASSERT(bufObj
->AccessFlags
== access
);
1477 * See GL_ARB_map_buffer_range spec
1480 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1482 GET_CURRENT_CONTEXT(ctx
);
1483 struct gl_buffer_object
*bufObj
;
1484 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1486 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1487 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1488 "glMapBufferRange(extension not supported)");
1493 _mesa_error(ctx
, GL_INVALID_VALUE
,
1494 "glMapBufferRange(offset = %ld)", (long)offset
);
1499 _mesa_error(ctx
, GL_INVALID_VALUE
,
1500 "glMapBufferRange(length = %ld)", (long)length
);
1504 bufObj
= get_buffer(ctx
, target
);
1506 _mesa_error(ctx
, GL_INVALID_ENUM
,
1507 "glMapBufferRange(target = 0x%x)", target
);
1511 if (!_mesa_is_bufferobj(bufObj
)) {
1512 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1513 "glMapBufferRange(current buffer is 0)");
1517 if (!_mesa_bufferobj_mapped(bufObj
)) {
1518 /* buffer is not mapped */
1519 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1520 "glMapBufferRange(buffer is not mapped)");
1524 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1525 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1526 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1530 if (offset
+ length
> bufObj
->Length
) {
1531 _mesa_error(ctx
, GL_INVALID_VALUE
,
1532 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1533 (long)offset
, (long)length
, (long)bufObj
->Length
);
1537 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1539 if (ctx
->Driver
.FlushMappedBufferRange
)
1540 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
, offset
, length
, bufObj
);
1544 #if FEATURE_APPLE_object_purgeable
1546 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1548 struct gl_buffer_object
*bufObj
;
1551 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1553 _mesa_error(ctx
, GL_INVALID_VALUE
,
1554 "glObjectPurgeable(name = 0x%x)", name
);
1557 if (!_mesa_is_bufferobj(bufObj
)) {
1558 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1562 if (bufObj
->Purgeable
) {
1563 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1564 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1565 return GL_VOLATILE_APPLE
;
1568 bufObj
->Purgeable
= GL_TRUE
;
1570 retval
= GL_VOLATILE_APPLE
;
1571 if (ctx
->Driver
.BufferObjectPurgeable
)
1572 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1579 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1581 struct gl_renderbuffer
*bufObj
;
1584 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1586 _mesa_error(ctx
, GL_INVALID_VALUE
,
1587 "glObjectUnpurgeable(name = 0x%x)", name
);
1591 if (bufObj
->Purgeable
) {
1592 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1593 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1594 return GL_VOLATILE_APPLE
;
1597 bufObj
->Purgeable
= GL_TRUE
;
1599 retval
= GL_VOLATILE_APPLE
;
1600 if (ctx
->Driver
.RenderObjectPurgeable
)
1601 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1608 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1610 struct gl_texture_object
*bufObj
;
1613 bufObj
= _mesa_lookup_texture(ctx
, name
);
1615 _mesa_error(ctx
, GL_INVALID_VALUE
,
1616 "glObjectPurgeable(name = 0x%x)", name
);
1620 if (bufObj
->Purgeable
) {
1621 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1622 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1623 return GL_VOLATILE_APPLE
;
1626 bufObj
->Purgeable
= GL_TRUE
;
1628 retval
= GL_VOLATILE_APPLE
;
1629 if (ctx
->Driver
.TextureObjectPurgeable
)
1630 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1637 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1641 GET_CURRENT_CONTEXT(ctx
);
1642 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1645 _mesa_error(ctx
, GL_INVALID_VALUE
,
1646 "glObjectPurgeable(name = 0x%x)", name
);
1651 case GL_VOLATILE_APPLE
:
1652 case GL_RELEASED_APPLE
:
1656 _mesa_error(ctx
, GL_INVALID_ENUM
,
1657 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1662 switch (objectType
) {
1664 retval
= texture_object_purgeable(ctx
, name
, option
);
1666 case GL_RENDERBUFFER_EXT
:
1667 retval
= renderbuffer_purgeable(ctx
, name
, option
);
1669 case GL_BUFFER_OBJECT_APPLE
:
1670 retval
= buffer_object_purgeable(ctx
, name
, option
);
1673 _mesa_error(ctx
, GL_INVALID_ENUM
,
1674 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1679 /* In strict conformance to the spec, we must only return VOLATILE when
1680 * when passed the VOLATILE option. Madness.
1682 * XXX First fix the spec, then fix me.
1684 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1689 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1691 struct gl_buffer_object
*bufObj
;
1694 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1696 _mesa_error(ctx
, GL_INVALID_VALUE
,
1697 "glObjectUnpurgeable(name = 0x%x)", name
);
1701 if (! bufObj
->Purgeable
) {
1702 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1703 "glObjectUnpurgeable(name = 0x%x) object is "
1704 " already \"unpurged\"", name
);
1708 bufObj
->Purgeable
= GL_FALSE
;
1711 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1712 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1719 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1721 struct gl_renderbuffer
*bufObj
;
1724 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1726 _mesa_error(ctx
, GL_INVALID_VALUE
,
1727 "glObjectUnpurgeable(name = 0x%x)", name
);
1731 if (! bufObj
->Purgeable
) {
1732 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1733 "glObjectUnpurgeable(name = 0x%x) object is "
1734 " already \"unpurged\"", name
);
1738 bufObj
->Purgeable
= GL_FALSE
;
1741 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1742 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1749 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1751 struct gl_texture_object
*bufObj
;
1754 bufObj
= _mesa_lookup_texture(ctx
, name
);
1756 _mesa_error(ctx
, GL_INVALID_VALUE
,
1757 "glObjectUnpurgeable(name = 0x%x)", name
);
1761 if (! bufObj
->Purgeable
) {
1762 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1763 "glObjectUnpurgeable(name = 0x%x) object is"
1764 " already \"unpurged\"", name
);
1768 bufObj
->Purgeable
= GL_FALSE
;
1771 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1772 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1779 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1781 GET_CURRENT_CONTEXT(ctx
);
1782 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1785 _mesa_error(ctx
, GL_INVALID_VALUE
,
1786 "glObjectUnpurgeable(name = 0x%x)", name
);
1791 case GL_RETAINED_APPLE
:
1792 case GL_UNDEFINED_APPLE
:
1796 _mesa_error(ctx
, GL_INVALID_ENUM
,
1797 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1802 switch (objectType
) {
1803 case GL_BUFFER_OBJECT_APPLE
:
1804 return buffer_object_unpurgeable(ctx
, name
, option
);
1806 return texture_object_unpurgeable(ctx
, name
, option
);
1807 case GL_RENDERBUFFER_EXT
:
1808 return renderbuffer_unpurgeable(ctx
, name
, option
);
1810 _mesa_error(ctx
, GL_INVALID_ENUM
,
1811 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1819 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1820 GLenum pname
, GLint
*params
)
1822 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1824 _mesa_error(ctx
, GL_INVALID_VALUE
,
1825 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1830 case GL_PURGEABLE_APPLE
:
1831 *params
= bufObj
->Purgeable
;
1834 _mesa_error(ctx
, GL_INVALID_ENUM
,
1835 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1843 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
1844 GLenum pname
, GLint
*params
)
1846 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
1848 _mesa_error(ctx
, GL_INVALID_VALUE
,
1849 "glObjectUnpurgeable(name = 0x%x)", name
);
1854 case GL_PURGEABLE_APPLE
:
1855 *params
= rb
->Purgeable
;
1858 _mesa_error(ctx
, GL_INVALID_ENUM
,
1859 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1867 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1868 GLenum pname
, GLint
*params
)
1870 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
1872 _mesa_error(ctx
, GL_INVALID_VALUE
,
1873 "glObjectUnpurgeable(name = 0x%x)", name
);
1878 case GL_PURGEABLE_APPLE
:
1879 *params
= texObj
->Purgeable
;
1882 _mesa_error(ctx
, GL_INVALID_ENUM
,
1883 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1891 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
1894 GET_CURRENT_CONTEXT(ctx
);
1897 _mesa_error(ctx
, GL_INVALID_VALUE
,
1898 "glGetObjectParameteriv(name = 0x%x)", name
);
1902 switch (objectType
) {
1904 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
1906 case GL_BUFFER_OBJECT_APPLE
:
1907 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
1909 case GL_RENDERBUFFER_EXT
:
1910 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
1913 _mesa_error(ctx
, GL_INVALID_ENUM
,
1914 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1919 #endif /* FEATURE_APPLE_object_purgeable */