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.
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
.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
, GLenum target
, GLintptrARB offset
,
390 GLsizeiptrARB size
, const GLvoid
* data
,
391 struct gl_buffer_object
* bufObj
)
393 (void) ctx
; (void) target
;
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
,
423 GLenum target
, GLintptrARB offset
,
424 GLsizeiptrARB size
, GLvoid
* data
,
425 struct gl_buffer_object
* bufObj
)
427 (void) ctx
; (void) target
;
429 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
430 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
436 * Default callback for \c dd_function_tabel::MapBuffer().
438 * The function parameters will have been already tested for errors.
440 * \param ctx GL context.
441 * \param target Buffer object target on which to operate.
442 * \param access Information about how the buffer will be accessed.
443 * \param bufObj Object to be mapped.
444 * \return A pointer to the object's internal data store that can be accessed
447 * \sa glMapBufferARB, dd_function_table::MapBuffer
450 _mesa_buffer_map( struct gl_context
*ctx
, GLenum target
, GLenum access
,
451 struct gl_buffer_object
*bufObj
)
456 /* Just return a direct pointer to the data */
457 if (_mesa_bufferobj_mapped(bufObj
)) {
458 /* already mapped! */
461 bufObj
->Pointer
= bufObj
->Data
;
462 bufObj
->Length
= bufObj
->Size
;
464 return bufObj
->Pointer
;
469 * Default fallback for \c dd_function_table::MapBufferRange().
470 * Called via glMapBufferRange().
473 _mesa_buffer_map_range( struct gl_context
*ctx
, GLenum target
, GLintptr offset
,
474 GLsizeiptr length
, GLbitfield access
,
475 struct gl_buffer_object
*bufObj
)
479 assert(!_mesa_bufferobj_mapped(bufObj
));
480 /* Just return a direct pointer to the data */
481 bufObj
->Pointer
= bufObj
->Data
+ offset
;
482 bufObj
->Length
= length
;
483 bufObj
->Offset
= offset
;
484 bufObj
->AccessFlags
= access
;
485 return bufObj
->Pointer
;
490 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
491 * Called via glFlushMappedBufferRange().
494 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
, GLenum target
,
495 GLintptr offset
, GLsizeiptr length
,
496 struct gl_buffer_object
*obj
)
508 * Default callback for \c dd_function_table::MapBuffer().
510 * The input parameters will have been already tested for errors.
512 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
515 _mesa_buffer_unmap( struct gl_context
*ctx
, GLenum target
,
516 struct gl_buffer_object
*bufObj
)
520 /* XXX we might assert here that bufObj->Pointer is non-null */
521 bufObj
->Pointer
= NULL
;
524 bufObj
->AccessFlags
= 0x0;
530 * Default fallback for \c dd_function_table::CopyBufferSubData().
531 * Called via glCopyBuffserSubData().
534 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
535 struct gl_buffer_object
*src
,
536 struct gl_buffer_object
*dst
,
537 GLintptr readOffset
, GLintptr writeOffset
,
540 GLubyte
*srcPtr
, *dstPtr
;
542 /* buffer should not already be mapped */
543 assert(!_mesa_bufferobj_mapped(src
));
544 assert(!_mesa_bufferobj_mapped(dst
));
546 srcPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_READ_BUFFER
,
548 dstPtr
= (GLubyte
*) ctx
->Driver
.MapBuffer(ctx
, GL_COPY_WRITE_BUFFER
,
551 if (srcPtr
&& dstPtr
)
552 memcpy(dstPtr
+ writeOffset
, srcPtr
+ readOffset
, size
);
554 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_READ_BUFFER
, src
);
555 ctx
->Driver
.UnmapBuffer(ctx
, GL_COPY_WRITE_BUFFER
, dst
);
561 * Initialize the state associated with buffer objects
564 _mesa_init_buffer_objects( struct gl_context
*ctx
)
566 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
567 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
568 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
570 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
571 ctx
->Shared
->NullBufferObj
);
572 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
,
573 ctx
->Shared
->NullBufferObj
);
575 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
576 ctx
->Shared
->NullBufferObj
);
577 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
578 ctx
->Shared
->NullBufferObj
);
583 _mesa_free_buffer_objects( struct gl_context
*ctx
)
585 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
586 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ElementArrayBufferObj
, NULL
);
588 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
589 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
594 * Bind the specified target to buffer for the specified context.
595 * Called by glBindBuffer() and other functions.
598 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
600 struct gl_buffer_object
*oldBufObj
;
601 struct gl_buffer_object
*newBufObj
= NULL
;
602 struct gl_buffer_object
**bindTarget
= NULL
;
604 bindTarget
= get_buffer_target(ctx
, target
);
606 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
610 /* Get pointer to old buffer object (to be unbound) */
611 oldBufObj
= *bindTarget
;
612 if (oldBufObj
&& oldBufObj
->Name
== buffer
)
613 return; /* rebinding the same buffer object- no change */
616 * Get pointer to new buffer object (newBufObj)
619 /* The spec says there's not a buffer object named 0, but we use
620 * one internally because it simplifies things.
622 newBufObj
= ctx
->Shared
->NullBufferObj
;
625 /* non-default buffer object */
626 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
627 if (!newBufObj
|| newBufObj
== &DummyBufferObject
) {
628 /* If this is a new buffer object id, or one which was generated but
629 * never used before, allocate a buffer object now.
631 ASSERT(ctx
->Driver
.NewBufferObject
);
632 newBufObj
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
634 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
637 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, newBufObj
);
641 /* bind new buffer */
642 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
644 /* Pass BindBuffer call to device driver */
645 if (ctx
->Driver
.BindBuffer
)
646 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
651 * Update the default buffer objects in the given context to reference those
652 * specified in the shared state and release those referencing the old
656 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
658 /* Bind the NullBufferObj to remove references to those
659 * in the shared context hash table.
661 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
662 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
663 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
664 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
670 * Return the gl_buffer_object for the given ID.
671 * Always return NULL for ID 0.
673 struct gl_buffer_object
*
674 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
679 return (struct gl_buffer_object
*)
680 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
685 * If *ptr points to obj, set ptr = the Null/default buffer object.
686 * This is a helper for buffer object deletion.
687 * The GL spec says that deleting a buffer object causes it to get
688 * unbound from all arrays in the current context.
691 unbind(struct gl_context
*ctx
,
692 struct gl_buffer_object
**ptr
,
693 struct gl_buffer_object
*obj
)
696 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
702 * Plug default/fallback buffer object functions into the device
706 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
708 /* GL_ARB_vertex/pixel_buffer_object */
709 driver
->NewBufferObject
= _mesa_new_buffer_object
;
710 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
711 driver
->BindBuffer
= NULL
;
712 driver
->BufferData
= _mesa_buffer_data
;
713 driver
->BufferSubData
= _mesa_buffer_subdata
;
714 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
715 driver
->MapBuffer
= _mesa_buffer_map
;
716 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
718 /* GL_ARB_map_buffer_range */
719 driver
->MapBufferRange
= _mesa_buffer_map_range
;
720 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
722 /* GL_ARB_copy_buffer */
723 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
728 /**********************************************************************/
730 /**********************************************************************/
733 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
735 GET_CURRENT_CONTEXT(ctx
);
736 ASSERT_OUTSIDE_BEGIN_END(ctx
);
738 if (MESA_VERBOSE
& VERBOSE_API
)
739 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
740 _mesa_lookup_enum_by_nr(target
), buffer
);
742 bind_buffer_object(ctx
, target
, buffer
);
747 * Delete a set of buffer objects.
749 * \param n Number of buffer objects to delete.
750 * \param ids Array of \c n buffer object IDs.
753 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
755 GET_CURRENT_CONTEXT(ctx
);
757 ASSERT_OUTSIDE_BEGIN_END(ctx
);
758 FLUSH_VERTICES(ctx
, 0);
761 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
765 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
767 for (i
= 0; i
< n
; i
++) {
768 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
770 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
773 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
775 if (_mesa_bufferobj_mapped(bufObj
)) {
776 /* if mapped, unmap it now */
777 ctx
->Driver
.UnmapBuffer(ctx
, 0, bufObj
);
778 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
779 bufObj
->Pointer
= NULL
;
782 /* unbind any vertex pointers bound to this buffer */
783 unbind(ctx
, &arrayObj
->Vertex
.BufferObj
, bufObj
);
784 unbind(ctx
, &arrayObj
->Weight
.BufferObj
, bufObj
);
785 unbind(ctx
, &arrayObj
->Normal
.BufferObj
, bufObj
);
786 unbind(ctx
, &arrayObj
->Color
.BufferObj
, bufObj
);
787 unbind(ctx
, &arrayObj
->SecondaryColor
.BufferObj
, bufObj
);
788 unbind(ctx
, &arrayObj
->FogCoord
.BufferObj
, bufObj
);
789 unbind(ctx
, &arrayObj
->Index
.BufferObj
, bufObj
);
790 unbind(ctx
, &arrayObj
->EdgeFlag
.BufferObj
, bufObj
);
791 for (j
= 0; j
< Elements(arrayObj
->TexCoord
); j
++) {
792 unbind(ctx
, &arrayObj
->TexCoord
[j
].BufferObj
, bufObj
);
794 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
795 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
798 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
799 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
801 if (ctx
->Array
.ElementArrayBufferObj
== bufObj
) {
802 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
805 /* unbind any pixel pack/unpack pointers bound to this buffer */
806 if (ctx
->Pack
.BufferObj
== bufObj
) {
807 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
809 if (ctx
->Unpack
.BufferObj
== bufObj
) {
810 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
813 /* The ID is immediately freed for re-use */
814 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
815 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
819 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
824 * Generate a set of unique buffer object IDs and store them in \c buffer.
826 * \param n Number of IDs to generate.
827 * \param buffer Array of \c n locations to store the IDs.
830 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
832 GET_CURRENT_CONTEXT(ctx
);
835 ASSERT_OUTSIDE_BEGIN_END(ctx
);
837 if (MESA_VERBOSE
& VERBOSE_API
)
838 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
841 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
850 * This must be atomic (generation and allocation of buffer object IDs)
852 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
854 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
856 /* Insert the ID and pointer to dummy buffer object into hash table */
857 for (i
= 0; i
< n
; i
++) {
858 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
860 buffer
[i
] = first
+ i
;
863 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
868 * Determine if ID is the name of a buffer object.
870 * \param id ID of the potential buffer object.
871 * \return \c GL_TRUE if \c id is the name of a buffer object,
872 * \c GL_FALSE otherwise.
875 _mesa_IsBufferARB(GLuint id
)
877 struct gl_buffer_object
*bufObj
;
878 GET_CURRENT_CONTEXT(ctx
);
879 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
881 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
882 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
883 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
885 return bufObj
&& bufObj
!= &DummyBufferObject
;
890 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
891 const GLvoid
* data
, GLenum usage
)
893 GET_CURRENT_CONTEXT(ctx
);
894 struct gl_buffer_object
*bufObj
;
895 ASSERT_OUTSIDE_BEGIN_END(ctx
);
897 if (MESA_VERBOSE
& VERBOSE_API
)
898 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
899 _mesa_lookup_enum_by_nr(target
),
900 (long int) size
, data
,
901 _mesa_lookup_enum_by_nr(usage
));
904 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
909 case GL_STREAM_DRAW_ARB
:
910 case GL_STREAM_READ_ARB
:
911 case GL_STREAM_COPY_ARB
:
912 case GL_STATIC_DRAW_ARB
:
913 case GL_STATIC_READ_ARB
:
914 case GL_STATIC_COPY_ARB
:
915 case GL_DYNAMIC_DRAW_ARB
:
916 case GL_DYNAMIC_READ_ARB
:
917 case GL_DYNAMIC_COPY_ARB
:
921 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(usage)");
925 bufObj
= get_buffer(ctx
, target
);
927 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferDataARB(target)" );
930 if (!_mesa_is_bufferobj(bufObj
)) {
931 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBufferDataARB(buffer 0)" );
935 if (_mesa_bufferobj_mapped(bufObj
)) {
936 /* Unmap the existing buffer. We'll replace it now. Not an error. */
937 ctx
->Driver
.UnmapBuffer(ctx
, target
, bufObj
);
938 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
939 ASSERT(bufObj
->Pointer
== NULL
);
942 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
944 bufObj
->Written
= GL_TRUE
;
947 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
948 bufObj
->Name
, size
, data
, usage
);
955 ASSERT(ctx
->Driver
.BufferData
);
956 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
957 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
963 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
964 GLsizeiptrARB size
, const GLvoid
* data
)
966 GET_CURRENT_CONTEXT(ctx
);
967 struct gl_buffer_object
*bufObj
;
968 ASSERT_OUTSIDE_BEGIN_END(ctx
);
970 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
971 "glBufferSubDataARB" );
973 /* error already recorded */
980 bufObj
->Written
= GL_TRUE
;
982 ASSERT(ctx
->Driver
.BufferSubData
);
983 ctx
->Driver
.BufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
988 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
989 GLsizeiptrARB size
, void * data
)
991 GET_CURRENT_CONTEXT(ctx
);
992 struct gl_buffer_object
*bufObj
;
993 ASSERT_OUTSIDE_BEGIN_END(ctx
);
995 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
996 "glGetBufferSubDataARB" );
998 /* error already recorded */
1002 ASSERT(ctx
->Driver
.GetBufferSubData
);
1003 ctx
->Driver
.GetBufferSubData( ctx
, target
, offset
, size
, data
, bufObj
);
1008 _mesa_MapBufferARB(GLenum target
, GLenum access
)
1010 GET_CURRENT_CONTEXT(ctx
);
1011 struct gl_buffer_object
* bufObj
;
1012 GLbitfield accessFlags
;
1015 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1018 case GL_READ_ONLY_ARB
:
1019 accessFlags
= GL_MAP_READ_BIT
;
1021 case GL_WRITE_ONLY_ARB
:
1022 accessFlags
= GL_MAP_WRITE_BIT
;
1024 case GL_READ_WRITE_ARB
:
1025 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1028 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1032 bufObj
= get_buffer(ctx
, target
);
1034 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(target)" );
1037 if (!_mesa_is_bufferobj(bufObj
)) {
1038 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(buffer 0)" );
1041 if (_mesa_bufferobj_mapped(bufObj
)) {
1042 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1046 ASSERT(ctx
->Driver
.MapBuffer
);
1047 map
= ctx
->Driver
.MapBuffer( ctx
, target
, access
, bufObj
);
1049 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1053 /* The driver callback should have set these fields.
1054 * This is important because other modules (like VBO) might call
1055 * the driver function directly.
1057 ASSERT(bufObj
->Pointer
== map
);
1058 ASSERT(bufObj
->Length
== bufObj
->Size
);
1059 ASSERT(bufObj
->Offset
== 0);
1060 bufObj
->AccessFlags
= accessFlags
;
1063 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1064 bufObj
->Written
= GL_TRUE
;
1067 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1068 bufObj
->Name
, bufObj
->Size
, access
);
1069 if (access
== GL_WRITE_ONLY_ARB
) {
1071 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1072 for (i
= 0; i
< bufObj
->Size
; i
++)
1079 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1081 /* buffer is 100 bytes larger than requested, fill with magic value */
1082 for (i
= 0; i
< 100; i
++) {
1083 buf
[bufObj
->Size
- i
- 1] = 123;
1088 return bufObj
->Pointer
;
1092 GLboolean GLAPIENTRY
1093 _mesa_UnmapBufferARB(GLenum target
)
1095 GET_CURRENT_CONTEXT(ctx
);
1096 struct gl_buffer_object
*bufObj
;
1097 GLboolean status
= GL_TRUE
;
1098 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1100 bufObj
= get_buffer(ctx
, target
);
1102 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUnmapBufferARB(target)" );
1105 if (!_mesa_is_bufferobj(bufObj
)) {
1106 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB" );
1109 if (!_mesa_bufferobj_mapped(bufObj
)) {
1110 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1115 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1116 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1118 /* check that last 100 bytes are still = magic value */
1119 for (i
= 0; i
< 100; i
++) {
1120 GLuint pos
= bufObj
->Size
- i
- 1;
1121 if (buf
[pos
] != 123) {
1122 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1123 " at position %d (value = %u)\n",
1131 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1132 GLuint i
, unchanged
= 0;
1133 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1135 /* check which bytes changed */
1136 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1137 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1144 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1145 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1150 status
= ctx
->Driver
.UnmapBuffer( ctx
, target
, bufObj
);
1151 bufObj
->AccessFlags
= DEFAULT_ACCESS
;
1152 ASSERT(bufObj
->Pointer
== NULL
);
1153 ASSERT(bufObj
->Offset
== 0);
1154 ASSERT(bufObj
->Length
== 0);
1161 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1163 GET_CURRENT_CONTEXT(ctx
);
1164 struct gl_buffer_object
*bufObj
;
1165 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1167 bufObj
= get_buffer(ctx
, target
);
1169 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(target)" );
1172 if (!_mesa_is_bufferobj(bufObj
)) {
1173 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameterivARB" );
1178 case GL_BUFFER_SIZE_ARB
:
1179 *params
= (GLint
) bufObj
->Size
;
1181 case GL_BUFFER_USAGE_ARB
:
1182 *params
= bufObj
->Usage
;
1184 case GL_BUFFER_ACCESS_ARB
:
1185 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1187 case GL_BUFFER_MAPPED_ARB
:
1188 *params
= _mesa_bufferobj_mapped(bufObj
);
1190 case GL_BUFFER_ACCESS_FLAGS
:
1191 if (ctx
->VersionMajor
< 3)
1193 *params
= bufObj
->AccessFlags
;
1195 case GL_BUFFER_MAP_OFFSET
:
1196 if (ctx
->VersionMajor
< 3)
1198 *params
= (GLint
) bufObj
->Offset
;
1200 case GL_BUFFER_MAP_LENGTH
:
1201 if (ctx
->VersionMajor
< 3)
1203 *params
= (GLint
) bufObj
->Length
;
1206 ; /* fall-through */
1210 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1211 _mesa_lookup_enum_by_nr(pname
));
1217 * This is pretty much a duplicate of GetBufferParameteriv() but the
1218 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1221 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1223 GET_CURRENT_CONTEXT(ctx
);
1224 struct gl_buffer_object
*bufObj
;
1225 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1227 bufObj
= get_buffer(ctx
, target
);
1229 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(target)" );
1232 if (!_mesa_is_bufferobj(bufObj
)) {
1233 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferParameteri64v" );
1238 case GL_BUFFER_SIZE_ARB
:
1239 *params
= bufObj
->Size
;
1241 case GL_BUFFER_USAGE_ARB
:
1242 *params
= bufObj
->Usage
;
1244 case GL_BUFFER_ACCESS_ARB
:
1245 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1247 case GL_BUFFER_ACCESS_FLAGS
:
1248 if (ctx
->VersionMajor
< 3)
1250 *params
= bufObj
->AccessFlags
;
1252 case GL_BUFFER_MAPPED_ARB
:
1253 *params
= _mesa_bufferobj_mapped(bufObj
);
1255 case GL_BUFFER_MAP_OFFSET
:
1256 if (ctx
->VersionMajor
< 3)
1258 *params
= bufObj
->Offset
;
1260 case GL_BUFFER_MAP_LENGTH
:
1261 if (ctx
->VersionMajor
< 3)
1263 *params
= bufObj
->Length
;
1266 ; /* fall-through */
1270 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1271 _mesa_lookup_enum_by_nr(pname
));
1276 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1278 GET_CURRENT_CONTEXT(ctx
);
1279 struct gl_buffer_object
* bufObj
;
1280 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1282 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1283 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1287 bufObj
= get_buffer(ctx
, target
);
1289 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(target)" );
1292 if (!_mesa_is_bufferobj(bufObj
)) {
1293 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetBufferPointervARB" );
1297 *params
= bufObj
->Pointer
;
1302 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1303 GLintptr readOffset
, GLintptr writeOffset
,
1306 GET_CURRENT_CONTEXT(ctx
);
1307 struct gl_buffer_object
*src
, *dst
;
1308 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1310 src
= get_buffer(ctx
, readTarget
);
1311 if (!src
|| !_mesa_is_bufferobj(src
)) {
1312 _mesa_error(ctx
, GL_INVALID_ENUM
,
1313 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget
);
1317 dst
= get_buffer(ctx
, writeTarget
);
1318 if (!dst
|| !_mesa_is_bufferobj(dst
)) {
1319 _mesa_error(ctx
, GL_INVALID_ENUM
,
1320 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget
);
1324 if (_mesa_bufferobj_mapped(src
)) {
1325 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1326 "glCopyBuffserSubData(readBuffer is mapped)");
1330 if (_mesa_bufferobj_mapped(dst
)) {
1331 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1332 "glCopyBuffserSubData(writeBuffer is mapped)");
1336 if (readOffset
< 0) {
1337 _mesa_error(ctx
, GL_INVALID_VALUE
,
1338 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset
);
1342 if (writeOffset
< 0) {
1343 _mesa_error(ctx
, GL_INVALID_VALUE
,
1344 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset
);
1348 if (readOffset
+ size
> src
->Size
) {
1349 _mesa_error(ctx
, GL_INVALID_VALUE
,
1350 "glCopyBuffserSubData(readOffset + size = %d)",
1351 (int) (readOffset
+ size
));
1355 if (writeOffset
+ size
> dst
->Size
) {
1356 _mesa_error(ctx
, GL_INVALID_VALUE
,
1357 "glCopyBuffserSubData(writeOffset + size = %d)",
1358 (int) (writeOffset
+ size
));
1363 if (readOffset
+ size
<= writeOffset
) {
1366 else if (writeOffset
+ size
<= readOffset
) {
1370 /* overlapping src/dst is illegal */
1371 _mesa_error(ctx
, GL_INVALID_VALUE
,
1372 "glCopyBuffserSubData(overlapping src/dst)");
1377 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1382 * See GL_ARB_map_buffer_range spec
1385 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1388 GET_CURRENT_CONTEXT(ctx
);
1389 struct gl_buffer_object
*bufObj
;
1392 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1394 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1395 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1396 "glMapBufferRange(extension not supported)");
1401 _mesa_error(ctx
, GL_INVALID_VALUE
,
1402 "glMapBufferRange(offset = %ld)", (long)offset
);
1407 _mesa_error(ctx
, GL_INVALID_VALUE
,
1408 "glMapBufferRange(length = %ld)", (long)length
);
1412 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1413 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1414 "glMapBufferRange(access indicates neither read or write)");
1418 if ((access
& GL_MAP_READ_BIT
) &&
1419 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
1420 GL_MAP_INVALIDATE_BUFFER_BIT
|
1421 GL_MAP_UNSYNCHRONIZED_BIT
))) {
1422 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1423 "glMapBufferRange(invalid access flags)");
1427 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1428 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1429 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1430 "glMapBufferRange(invalid access flags)");
1434 bufObj
= get_buffer(ctx
, target
);
1435 if (!bufObj
|| !_mesa_is_bufferobj(bufObj
)) {
1436 _mesa_error(ctx
, GL_INVALID_ENUM
,
1437 "glMapBufferRange(target = 0x%x)", target
);
1441 if (offset
+ length
> bufObj
->Size
) {
1442 _mesa_error(ctx
, GL_INVALID_VALUE
,
1443 "glMapBufferRange(offset + length > size)");
1447 if (_mesa_bufferobj_mapped(bufObj
)) {
1448 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1449 "glMapBufferRange(buffer already mapped)");
1453 ASSERT(ctx
->Driver
.MapBufferRange
);
1454 map
= ctx
->Driver
.MapBufferRange(ctx
, target
, offset
, length
,
1457 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1460 /* The driver callback should have set all these fields.
1461 * This is important because other modules (like VBO) might call
1462 * the driver function directly.
1464 ASSERT(bufObj
->Pointer
== map
);
1465 ASSERT(bufObj
->Length
== length
);
1466 ASSERT(bufObj
->Offset
== offset
);
1467 ASSERT(bufObj
->AccessFlags
== access
);
1475 * See GL_ARB_map_buffer_range spec
1478 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1480 GET_CURRENT_CONTEXT(ctx
);
1481 struct gl_buffer_object
*bufObj
;
1482 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1484 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1485 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1486 "glMapBufferRange(extension not supported)");
1491 _mesa_error(ctx
, GL_INVALID_VALUE
,
1492 "glMapBufferRange(offset = %ld)", (long)offset
);
1497 _mesa_error(ctx
, GL_INVALID_VALUE
,
1498 "glMapBufferRange(length = %ld)", (long)length
);
1502 bufObj
= get_buffer(ctx
, target
);
1504 _mesa_error(ctx
, GL_INVALID_ENUM
,
1505 "glMapBufferRange(target = 0x%x)", target
);
1509 if (!_mesa_is_bufferobj(bufObj
)) {
1510 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1511 "glMapBufferRange(current buffer is 0)");
1515 if (!_mesa_bufferobj_mapped(bufObj
)) {
1516 /* buffer is not mapped */
1517 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1518 "glMapBufferRange(buffer is not mapped)");
1522 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1523 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1524 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1528 if (offset
+ length
> bufObj
->Length
) {
1529 _mesa_error(ctx
, GL_INVALID_VALUE
,
1530 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1531 (long)offset
, (long)length
, (long)bufObj
->Length
);
1535 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1537 if (ctx
->Driver
.FlushMappedBufferRange
)
1538 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
, offset
, length
, bufObj
);
1542 #if FEATURE_APPLE_object_purgeable
1544 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1546 struct gl_buffer_object
*bufObj
;
1549 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1551 _mesa_error(ctx
, GL_INVALID_VALUE
,
1552 "glObjectPurgeable(name = 0x%x)", name
);
1555 if (!_mesa_is_bufferobj(bufObj
)) {
1556 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1560 if (bufObj
->Purgeable
) {
1561 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1562 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1563 return GL_VOLATILE_APPLE
;
1566 bufObj
->Purgeable
= GL_TRUE
;
1568 retval
= GL_VOLATILE_APPLE
;
1569 if (ctx
->Driver
.BufferObjectPurgeable
)
1570 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1577 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1579 struct gl_renderbuffer
*bufObj
;
1582 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1584 _mesa_error(ctx
, GL_INVALID_VALUE
,
1585 "glObjectUnpurgeable(name = 0x%x)", name
);
1589 if (bufObj
->Purgeable
) {
1590 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1591 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1592 return GL_VOLATILE_APPLE
;
1595 bufObj
->Purgeable
= GL_TRUE
;
1597 retval
= GL_VOLATILE_APPLE
;
1598 if (ctx
->Driver
.RenderObjectPurgeable
)
1599 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1606 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1608 struct gl_texture_object
*bufObj
;
1611 bufObj
= _mesa_lookup_texture(ctx
, name
);
1613 _mesa_error(ctx
, GL_INVALID_VALUE
,
1614 "glObjectPurgeable(name = 0x%x)", name
);
1618 if (bufObj
->Purgeable
) {
1619 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1620 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1621 return GL_VOLATILE_APPLE
;
1624 bufObj
->Purgeable
= GL_TRUE
;
1626 retval
= GL_VOLATILE_APPLE
;
1627 if (ctx
->Driver
.TextureObjectPurgeable
)
1628 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1635 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1639 GET_CURRENT_CONTEXT(ctx
);
1640 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1643 _mesa_error(ctx
, GL_INVALID_VALUE
,
1644 "glObjectPurgeable(name = 0x%x)", name
);
1649 case GL_VOLATILE_APPLE
:
1650 case GL_RELEASED_APPLE
:
1654 _mesa_error(ctx
, GL_INVALID_ENUM
,
1655 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1660 switch (objectType
) {
1662 retval
= texture_object_purgeable(ctx
, name
, option
);
1664 case GL_RENDERBUFFER_EXT
:
1665 retval
= renderbuffer_purgeable(ctx
, name
, option
);
1667 case GL_BUFFER_OBJECT_APPLE
:
1668 retval
= buffer_object_purgeable(ctx
, name
, option
);
1671 _mesa_error(ctx
, GL_INVALID_ENUM
,
1672 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1677 /* In strict conformance to the spec, we must only return VOLATILE when
1678 * when passed the VOLATILE option. Madness.
1680 * XXX First fix the spec, then fix me.
1682 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1687 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1689 struct gl_buffer_object
*bufObj
;
1692 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1694 _mesa_error(ctx
, GL_INVALID_VALUE
,
1695 "glObjectUnpurgeable(name = 0x%x)", name
);
1699 if (! bufObj
->Purgeable
) {
1700 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1701 "glObjectUnpurgeable(name = 0x%x) object is "
1702 " already \"unpurged\"", name
);
1706 bufObj
->Purgeable
= GL_FALSE
;
1709 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1710 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1717 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1719 struct gl_renderbuffer
*bufObj
;
1722 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1724 _mesa_error(ctx
, GL_INVALID_VALUE
,
1725 "glObjectUnpurgeable(name = 0x%x)", name
);
1729 if (! bufObj
->Purgeable
) {
1730 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1731 "glObjectUnpurgeable(name = 0x%x) object is "
1732 " already \"unpurged\"", name
);
1736 bufObj
->Purgeable
= GL_FALSE
;
1739 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1740 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1747 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1749 struct gl_texture_object
*bufObj
;
1752 bufObj
= _mesa_lookup_texture(ctx
, name
);
1754 _mesa_error(ctx
, GL_INVALID_VALUE
,
1755 "glObjectUnpurgeable(name = 0x%x)", name
);
1759 if (! bufObj
->Purgeable
) {
1760 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1761 "glObjectUnpurgeable(name = 0x%x) object is"
1762 " already \"unpurged\"", name
);
1766 bufObj
->Purgeable
= GL_FALSE
;
1769 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1770 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1777 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1779 GET_CURRENT_CONTEXT(ctx
);
1780 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1783 _mesa_error(ctx
, GL_INVALID_VALUE
,
1784 "glObjectUnpurgeable(name = 0x%x)", name
);
1789 case GL_RETAINED_APPLE
:
1790 case GL_UNDEFINED_APPLE
:
1794 _mesa_error(ctx
, GL_INVALID_ENUM
,
1795 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1800 switch (objectType
) {
1801 case GL_BUFFER_OBJECT_APPLE
:
1802 return buffer_object_unpurgeable(ctx
, name
, option
);
1804 return texture_object_unpurgeable(ctx
, name
, option
);
1805 case GL_RENDERBUFFER_EXT
:
1806 return renderbuffer_unpurgeable(ctx
, name
, option
);
1808 _mesa_error(ctx
, GL_INVALID_ENUM
,
1809 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1817 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1818 GLenum pname
, GLint
*params
)
1820 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1822 _mesa_error(ctx
, GL_INVALID_VALUE
,
1823 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1828 case GL_PURGEABLE_APPLE
:
1829 *params
= bufObj
->Purgeable
;
1832 _mesa_error(ctx
, GL_INVALID_ENUM
,
1833 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1841 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
1842 GLenum pname
, GLint
*params
)
1844 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
1846 _mesa_error(ctx
, GL_INVALID_VALUE
,
1847 "glObjectUnpurgeable(name = 0x%x)", name
);
1852 case GL_PURGEABLE_APPLE
:
1853 *params
= rb
->Purgeable
;
1856 _mesa_error(ctx
, GL_INVALID_ENUM
,
1857 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1865 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1866 GLenum pname
, GLint
*params
)
1868 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
1870 _mesa_error(ctx
, GL_INVALID_VALUE
,
1871 "glObjectUnpurgeable(name = 0x%x)", name
);
1876 case GL_PURGEABLE_APPLE
:
1877 *params
= texObj
->Purgeable
;
1880 _mesa_error(ctx
, GL_INVALID_ENUM
,
1881 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1889 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
1892 GET_CURRENT_CONTEXT(ctx
);
1895 _mesa_error(ctx
, GL_INVALID_VALUE
,
1896 "glGetObjectParameteriv(name = 0x%x)", name
);
1900 switch (objectType
) {
1902 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
1904 case GL_BUFFER_OBJECT_APPLE
:
1905 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
1907 case GL_RENDERBUFFER_EXT
:
1908 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
1911 _mesa_error(ctx
, GL_INVALID_ENUM
,
1912 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1917 #endif /* FEATURE_APPLE_object_purgeable */