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"
45 #include "transformfeedback.h"
51 /*#define BOUNDS_CHECK*/
55 * Used as a placeholder for buffer objects between glGenBuffers() and
56 * glBindBuffer() so that glIsBuffer() can work correctly.
58 static struct gl_buffer_object DummyBufferObject
;
62 * Return pointer to address of a buffer object target.
63 * \param ctx the GL context
64 * \param target the buffer object target to be retrieved.
65 * \return pointer to pointer to the buffer object bound to \c target in the
66 * specified context or \c NULL if \c target is invalid.
68 static inline struct gl_buffer_object
**
69 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
71 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
73 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
74 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
78 case GL_ARRAY_BUFFER_ARB
:
79 return &ctx
->Array
.ArrayBufferObj
;
80 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
81 return &ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
82 case GL_PIXEL_PACK_BUFFER_EXT
:
83 return &ctx
->Pack
.BufferObj
;
84 case GL_PIXEL_UNPACK_BUFFER_EXT
:
85 return &ctx
->Unpack
.BufferObj
;
86 case GL_COPY_READ_BUFFER
:
87 return &ctx
->CopyReadBuffer
;
88 case GL_COPY_WRITE_BUFFER
:
89 return &ctx
->CopyWriteBuffer
;
90 #if FEATURE_EXT_transform_feedback
91 case GL_TRANSFORM_FEEDBACK_BUFFER
:
92 if (ctx
->Extensions
.EXT_transform_feedback
) {
93 return &ctx
->TransformFeedback
.CurrentBuffer
;
97 case GL_TEXTURE_BUFFER
:
98 if (_mesa_is_desktop_gl(ctx
)
99 && ctx
->Extensions
.ARB_texture_buffer_object
) {
100 return &ctx
->Texture
.BufferObject
;
103 case GL_UNIFORM_BUFFER
:
104 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
105 return &ctx
->UniformBuffer
;
116 * Get the buffer object bound to the specified target in a GL context.
117 * \param ctx the GL context
118 * \param target the buffer object target to be retrieved.
119 * \return pointer to the buffer object bound to \c target in the
120 * specified context or \c NULL if \c target is invalid.
122 static inline struct gl_buffer_object
*
123 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
)
125 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
128 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
132 if (!_mesa_is_bufferobj(*bufObj
)) {
133 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(buffer 0)", func
);
141 static inline GLbitfield
142 default_access_mode(const struct gl_context
*ctx
)
144 /* Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
146 * Name Type Initial Value Legal Values
148 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
151 * However, table 6.8 in the GL_OES_mapbuffer extension says:
153 * Get Value Type Get Command Value Description
154 * --------- ---- ----------- ----- -----------
155 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
157 * The difference is because GL_OES_mapbuffer only supports mapping buffers
160 return _mesa_is_gles(ctx
)
161 ? GL_MAP_WRITE_BIT
: (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
);
166 * Convert a GLbitfield describing the mapped buffer access flags
167 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
170 simplified_access_mode(GLbitfield access
)
172 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
173 if ((access
& rwFlags
) == rwFlags
)
174 return GL_READ_WRITE
;
175 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
177 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
178 return GL_WRITE_ONLY
;
179 return GL_READ_WRITE
; /* this should never happen, but no big deal */
184 * Tests the subdata range parameters and sets the GL error code for
185 * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
187 * \param ctx GL context.
188 * \param target Buffer object target on which to operate.
189 * \param offset Offset of the first byte of the subdata range.
190 * \param size Size, in bytes, of the subdata range.
191 * \param caller Name of calling function for recording errors.
192 * \return A pointer to the buffer object bound to \c target in the
193 * specified context or \c NULL if any of the parameter or state
194 * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
197 * \sa glBufferSubDataARB, glGetBufferSubDataARB
199 static struct gl_buffer_object
*
200 buffer_object_subdata_range_good( struct gl_context
* ctx
, GLenum target
,
201 GLintptrARB offset
, GLsizeiptrARB size
,
204 struct gl_buffer_object
*bufObj
;
207 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
212 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
216 bufObj
= get_buffer(ctx
, caller
, target
);
220 if (offset
+ size
> bufObj
->Size
) {
221 _mesa_error(ctx
, GL_INVALID_VALUE
,
222 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
223 (unsigned long) offset
,
224 (unsigned long) size
,
225 (unsigned long) bufObj
->Size
);
228 if (_mesa_bufferobj_mapped(bufObj
)) {
229 /* Buffer is currently mapped */
230 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
239 * Allocate and initialize a new buffer object.
241 * Default callback for the \c dd_function_table::NewBufferObject() hook.
243 static struct gl_buffer_object
*
244 _mesa_new_buffer_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
246 struct gl_buffer_object
*obj
;
250 obj
= MALLOC_STRUCT(gl_buffer_object
);
251 _mesa_initialize_buffer_object(ctx
, obj
, name
, target
);
257 * Delete a buffer object.
259 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
262 _mesa_delete_buffer_object(struct gl_context
*ctx
,
263 struct gl_buffer_object
*bufObj
)
270 /* assign strange values here to help w/ debugging */
271 bufObj
->RefCount
= -1000;
274 _glthread_DESTROY_MUTEX(bufObj
->Mutex
);
281 * Set ptr to bufObj w/ reference counting.
282 * This is normally only called from the _mesa_reference_buffer_object() macro
283 * when there's a real pointer change.
286 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
287 struct gl_buffer_object
**ptr
,
288 struct gl_buffer_object
*bufObj
)
291 /* Unreference the old buffer */
292 GLboolean deleteFlag
= GL_FALSE
;
293 struct gl_buffer_object
*oldObj
= *ptr
;
295 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
296 ASSERT(oldObj
->RefCount
> 0);
299 printf("BufferObj %p %d DECR to %d\n",
300 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
302 deleteFlag
= (oldObj
->RefCount
== 0);
303 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
307 /* some sanity checking: don't delete a buffer still in use */
309 /* unfortunately, these tests are invalid during context tear-down */
310 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
311 ASSERT(ctx
->Array
.ArrayObj
->ElementArrayBufferObj
!= bufObj
);
312 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
315 ASSERT(ctx
->Driver
.DeleteBuffer
);
316 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
324 /* reference new buffer */
325 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
326 if (bufObj
->RefCount
== 0) {
327 /* this buffer's being deleted (look just above) */
328 /* Not sure this can every really happen. Warn if it does. */
329 _mesa_problem(NULL
, "referencing deleted buffer object");
335 printf("BufferObj %p %d INCR to %d\n",
336 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
340 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
346 * Initialize a buffer object to default values.
349 _mesa_initialize_buffer_object( struct gl_context
*ctx
,
350 struct gl_buffer_object
*obj
,
351 GLuint name
, GLenum target
)
355 memset(obj
, 0, sizeof(struct gl_buffer_object
));
356 _glthread_INIT_MUTEX(obj
->Mutex
);
359 obj
->Usage
= GL_STATIC_DRAW_ARB
;
360 obj
->AccessFlags
= default_access_mode(ctx
);
366 * Callback called from _mesa_HashWalk()
369 count_buffer_size(GLuint key
, void *data
, void *userData
)
371 const struct gl_buffer_object
*bufObj
=
372 (const struct gl_buffer_object
*) data
;
373 GLuint
*total
= (GLuint
*) userData
;
375 *total
= *total
+ bufObj
->Size
;
380 * Compute total size (in bytes) of all buffer objects for the given context.
381 * For debugging purposes.
384 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
388 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
395 * Allocate space for and store data in a buffer object. Any data that was
396 * previously stored in the buffer object is lost. If \c data is \c NULL,
397 * memory will be allocated, but no copy will occur.
399 * This is the default callback for \c dd_function_table::BufferData()
400 * Note that all GL error checking will have been done already.
402 * \param ctx GL context.
403 * \param target Buffer object target on which to operate.
404 * \param size Size, in bytes, of the new data store.
405 * \param data Pointer to the data to store in the buffer object. This
406 * pointer may be \c NULL.
407 * \param usage Hints about how the data will be used.
408 * \param bufObj Object to be used.
410 * \return GL_TRUE for success, GL_FALSE for failure
411 * \sa glBufferDataARB, dd_function_table::BufferData.
414 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
415 const GLvoid
* data
, GLenum usage
,
416 struct gl_buffer_object
* bufObj
)
420 (void) ctx
; (void) target
;
422 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
424 bufObj
->Data
= (GLubyte
*) new_data
;
426 bufObj
->Usage
= usage
;
429 memcpy( bufObj
->Data
, data
, size
);
441 * Replace data in a subrange of buffer object. If the data range
442 * specified by \c size + \c offset extends beyond the end of the buffer or
443 * if \c data is \c NULL, no copy is performed.
445 * This is the default callback for \c dd_function_table::BufferSubData()
446 * Note that all GL error checking will have been done already.
448 * \param ctx GL context.
449 * \param target Buffer object target on which to operate.
450 * \param offset Offset of the first byte to be modified.
451 * \param size Size, in bytes, of the data range.
452 * \param data Pointer to the data to store in the buffer object.
453 * \param bufObj Object to be used.
455 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
458 _mesa_buffer_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
459 GLsizeiptrARB size
, const GLvoid
* data
,
460 struct gl_buffer_object
* bufObj
)
464 /* this should have been caught in _mesa_BufferSubData() */
465 ASSERT(size
+ offset
<= bufObj
->Size
);
468 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
474 * Retrieve data from a subrange of buffer object. If the data range
475 * specified by \c size + \c offset extends beyond the end of the buffer or
476 * if \c data is \c NULL, no copy is performed.
478 * This is the default callback for \c dd_function_table::GetBufferSubData()
479 * Note that all GL error checking will have been done already.
481 * \param ctx GL context.
482 * \param target Buffer object target on which to operate.
483 * \param offset Offset of the first byte to be fetched.
484 * \param size Size, in bytes, of the data range.
485 * \param data Destination for data
486 * \param bufObj Object to be used.
488 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
491 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
492 GLsizeiptrARB size
, GLvoid
* data
,
493 struct gl_buffer_object
* bufObj
)
497 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
498 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
504 * Default fallback for \c dd_function_table::MapBufferRange().
505 * Called via glMapBufferRange().
508 _mesa_buffer_map_range( struct gl_context
*ctx
, GLintptr offset
,
509 GLsizeiptr length
, GLbitfield access
,
510 struct gl_buffer_object
*bufObj
)
513 assert(!_mesa_bufferobj_mapped(bufObj
));
514 /* Just return a direct pointer to the data */
515 bufObj
->Pointer
= bufObj
->Data
+ offset
;
516 bufObj
->Length
= length
;
517 bufObj
->Offset
= offset
;
518 bufObj
->AccessFlags
= access
;
519 return bufObj
->Pointer
;
524 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
525 * Called via glFlushMappedBufferRange().
528 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
,
529 GLintptr offset
, GLsizeiptr length
,
530 struct gl_buffer_object
*obj
)
541 * Default callback for \c dd_function_table::MapBuffer().
543 * The input parameters will have been already tested for errors.
545 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
548 _mesa_buffer_unmap( struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
551 /* XXX we might assert here that bufObj->Pointer is non-null */
552 bufObj
->Pointer
= NULL
;
555 bufObj
->AccessFlags
= 0x0;
561 * Default fallback for \c dd_function_table::CopyBufferSubData().
562 * Called via glCopyBufferSubData().
565 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
566 struct gl_buffer_object
*src
,
567 struct gl_buffer_object
*dst
,
568 GLintptr readOffset
, GLintptr writeOffset
,
571 GLubyte
*srcPtr
, *dstPtr
;
573 /* the buffers should not be mapped */
574 assert(!_mesa_bufferobj_mapped(src
));
575 assert(!_mesa_bufferobj_mapped(dst
));
578 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
580 GL_MAP_WRITE_BIT
, src
);
585 srcPtr
+= readOffset
;
586 dstPtr
+= writeOffset
;
588 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
589 GL_MAP_READ_BIT
, src
);
590 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
592 GL_MAP_INVALIDATE_RANGE_BIT
), dst
);
595 /* Note: the src and dst regions will never overlap. Trying to do so
596 * would generate GL_INVALID_VALUE earlier.
598 if (srcPtr
&& dstPtr
)
599 memcpy(dstPtr
, srcPtr
, size
);
601 ctx
->Driver
.UnmapBuffer(ctx
, src
);
603 ctx
->Driver
.UnmapBuffer(ctx
, dst
);
609 * Initialize the state associated with buffer objects
612 _mesa_init_buffer_objects( struct gl_context
*ctx
)
616 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
617 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
618 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
620 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
621 ctx
->Shared
->NullBufferObj
);
623 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
624 ctx
->Shared
->NullBufferObj
);
625 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
626 ctx
->Shared
->NullBufferObj
);
628 ctx
->UniformBufferBindings
= calloc(ctx
->Const
.MaxUniformBufferBindings
,
629 sizeof(*ctx
->UniformBufferBindings
));
631 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
632 ctx
->Shared
->NullBufferObj
);
634 for (i
= 0; i
< ctx
->Const
.MaxUniformBufferBindings
; i
++) {
635 _mesa_reference_buffer_object(ctx
,
636 &ctx
->UniformBufferBindings
[i
].BufferObject
,
637 ctx
->Shared
->NullBufferObj
);
638 ctx
->UniformBufferBindings
[i
].Offset
= -1;
639 ctx
->UniformBufferBindings
[i
].Size
= -1;
645 _mesa_free_buffer_objects( struct gl_context
*ctx
)
649 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
651 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
652 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
654 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
656 for (i
= 0; i
< ctx
->Const
.MaxUniformBufferBindings
; i
++) {
657 _mesa_reference_buffer_object(ctx
,
658 &ctx
->UniformBufferBindings
[i
].BufferObject
,
662 free(ctx
->UniformBufferBindings
);
663 ctx
->UniformBufferBindings
= NULL
;
667 handle_bind_buffer_gen(struct gl_context
*ctx
,
670 struct gl_buffer_object
**buf_handle
)
672 struct gl_buffer_object
*buf
= *buf_handle
;
674 if (!buf
|| buf
== &DummyBufferObject
) {
675 /* If this is a new buffer object id, or one which was generated but
676 * never used before, allocate a buffer object now.
678 ASSERT(ctx
->Driver
.NewBufferObject
);
679 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
681 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindBufferARB");
684 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
690 * Bind the specified target to buffer for the specified context.
691 * Called by glBindBuffer() and other functions.
694 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
696 struct gl_buffer_object
*oldBufObj
;
697 struct gl_buffer_object
*newBufObj
= NULL
;
698 struct gl_buffer_object
**bindTarget
= NULL
;
700 bindTarget
= get_buffer_target(ctx
, target
);
702 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
706 /* Get pointer to old buffer object (to be unbound) */
707 oldBufObj
= *bindTarget
;
708 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
709 return; /* rebinding the same buffer object- no change */
712 * Get pointer to new buffer object (newBufObj)
715 /* The spec says there's not a buffer object named 0, but we use
716 * one internally because it simplifies things.
718 newBufObj
= ctx
->Shared
->NullBufferObj
;
721 /* non-default buffer object */
722 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
723 handle_bind_buffer_gen(ctx
, target
, buffer
, &newBufObj
);
726 /* bind new buffer */
727 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
729 /* Pass BindBuffer call to device driver */
730 if (ctx
->Driver
.BindBuffer
)
731 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
736 * Update the default buffer objects in the given context to reference those
737 * specified in the shared state and release those referencing the old
741 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
743 /* Bind the NullBufferObj to remove references to those
744 * in the shared context hash table.
746 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
747 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
748 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
749 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
755 * Return the gl_buffer_object for the given ID.
756 * Always return NULL for ID 0.
758 struct gl_buffer_object
*
759 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
764 return (struct gl_buffer_object
*)
765 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
770 * If *ptr points to obj, set ptr = the Null/default buffer object.
771 * This is a helper for buffer object deletion.
772 * The GL spec says that deleting a buffer object causes it to get
773 * unbound from all arrays in the current context.
776 unbind(struct gl_context
*ctx
,
777 struct gl_buffer_object
**ptr
,
778 struct gl_buffer_object
*obj
)
781 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
787 * Plug default/fallback buffer object functions into the device
791 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
793 /* GL_ARB_vertex/pixel_buffer_object */
794 driver
->NewBufferObject
= _mesa_new_buffer_object
;
795 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
796 driver
->BindBuffer
= NULL
;
797 driver
->BufferData
= _mesa_buffer_data
;
798 driver
->BufferSubData
= _mesa_buffer_subdata
;
799 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
800 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
802 /* GL_ARB_map_buffer_range */
803 driver
->MapBufferRange
= _mesa_buffer_map_range
;
804 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
806 /* GL_ARB_copy_buffer */
807 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
812 /**********************************************************************/
814 /**********************************************************************/
817 _mesa_BindBufferARB(GLenum target
, GLuint buffer
)
819 GET_CURRENT_CONTEXT(ctx
);
820 ASSERT_OUTSIDE_BEGIN_END(ctx
);
822 if (MESA_VERBOSE
& VERBOSE_API
)
823 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
824 _mesa_lookup_enum_by_nr(target
), buffer
);
826 bind_buffer_object(ctx
, target
, buffer
);
831 * Delete a set of buffer objects.
833 * \param n Number of buffer objects to delete.
834 * \param ids Array of \c n buffer object IDs.
837 _mesa_DeleteBuffersARB(GLsizei n
, const GLuint
*ids
)
839 GET_CURRENT_CONTEXT(ctx
);
841 ASSERT_OUTSIDE_BEGIN_END(ctx
);
842 FLUSH_VERTICES(ctx
, 0);
845 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
849 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
851 for (i
= 0; i
< n
; i
++) {
852 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
854 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
857 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
859 if (_mesa_bufferobj_mapped(bufObj
)) {
860 /* if mapped, unmap it now */
861 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
862 bufObj
->AccessFlags
= default_access_mode(ctx
);
863 bufObj
->Pointer
= NULL
;
866 /* unbind any vertex pointers bound to this buffer */
867 for (j
= 0; j
< Elements(arrayObj
->VertexAttrib
); j
++) {
868 unbind(ctx
, &arrayObj
->VertexAttrib
[j
].BufferObj
, bufObj
);
871 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
872 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB
, 0 );
874 if (arrayObj
->ElementArrayBufferObj
== bufObj
) {
875 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
878 /* unbind ARB_copy_buffer binding points */
879 if (ctx
->CopyReadBuffer
== bufObj
) {
880 _mesa_BindBufferARB( GL_COPY_READ_BUFFER
, 0 );
882 if (ctx
->CopyWriteBuffer
== bufObj
) {
883 _mesa_BindBufferARB( GL_COPY_WRITE_BUFFER
, 0 );
886 /* unbind transform feedback binding points */
887 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
888 _mesa_BindBufferARB( GL_TRANSFORM_FEEDBACK_BUFFER
, 0 );
890 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
891 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
892 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
896 /* unbind UBO binding points */
897 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
898 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
899 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
903 if (ctx
->UniformBuffer
== bufObj
) {
904 _mesa_BindBufferARB( GL_UNIFORM_BUFFER
, 0 );
907 /* unbind any pixel pack/unpack pointers bound to this buffer */
908 if (ctx
->Pack
.BufferObj
== bufObj
) {
909 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
911 if (ctx
->Unpack
.BufferObj
== bufObj
) {
912 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
915 if (ctx
->Texture
.BufferObject
== bufObj
) {
916 _mesa_BindBufferARB( GL_TEXTURE_BUFFER
, 0 );
919 /* The ID is immediately freed for re-use */
920 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
921 /* Make sure we do not run into the classic ABA problem on bind.
922 * We don't want to allow re-binding a buffer object that's been
923 * "deleted" by glDeleteBuffers().
925 * The explicit rebinding to the default object in the current context
926 * prevents the above in the current context, but another context
927 * sharing the same objects might suffer from this problem.
928 * The alternative would be to do the hash lookup in any case on bind
929 * which would introduce more runtime overhead than this.
931 bufObj
->DeletePending
= GL_TRUE
;
932 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
936 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
941 * Generate a set of unique buffer object IDs and store them in \c buffer.
943 * \param n Number of IDs to generate.
944 * \param buffer Array of \c n locations to store the IDs.
947 _mesa_GenBuffersARB(GLsizei n
, GLuint
*buffer
)
949 GET_CURRENT_CONTEXT(ctx
);
952 ASSERT_OUTSIDE_BEGIN_END(ctx
);
954 if (MESA_VERBOSE
& VERBOSE_API
)
955 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
958 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
967 * This must be atomic (generation and allocation of buffer object IDs)
969 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
971 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
973 /* Insert the ID and pointer to dummy buffer object into hash table */
974 for (i
= 0; i
< n
; i
++) {
975 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
977 buffer
[i
] = first
+ i
;
980 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
985 * Determine if ID is the name of a buffer object.
987 * \param id ID of the potential buffer object.
988 * \return \c GL_TRUE if \c id is the name of a buffer object,
989 * \c GL_FALSE otherwise.
992 _mesa_IsBufferARB(GLuint id
)
994 struct gl_buffer_object
*bufObj
;
995 GET_CURRENT_CONTEXT(ctx
);
996 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
998 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
999 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1000 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1002 return bufObj
&& bufObj
!= &DummyBufferObject
;
1007 _mesa_BufferDataARB(GLenum target
, GLsizeiptrARB size
,
1008 const GLvoid
* data
, GLenum usage
)
1010 GET_CURRENT_CONTEXT(ctx
);
1011 struct gl_buffer_object
*bufObj
;
1013 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1015 if (MESA_VERBOSE
& VERBOSE_API
)
1016 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
1017 _mesa_lookup_enum_by_nr(target
),
1018 (long int) size
, data
,
1019 _mesa_lookup_enum_by_nr(usage
));
1022 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
1027 case GL_STREAM_DRAW_ARB
:
1028 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1031 case GL_STATIC_DRAW_ARB
:
1032 case GL_DYNAMIC_DRAW_ARB
:
1036 case GL_STREAM_READ_ARB
:
1037 case GL_STREAM_COPY_ARB
:
1038 case GL_STATIC_READ_ARB
:
1039 case GL_STATIC_COPY_ARB
:
1040 case GL_DYNAMIC_READ_ARB
:
1041 case GL_DYNAMIC_COPY_ARB
:
1042 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1046 valid_usage
= false;
1051 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferData(usage)");
1055 bufObj
= get_buffer(ctx
, "glBufferDataARB", target
);
1059 if (_mesa_bufferobj_mapped(bufObj
)) {
1060 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1061 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
1062 bufObj
->AccessFlags
= default_access_mode(ctx
);
1063 ASSERT(bufObj
->Pointer
== NULL
);
1066 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1068 bufObj
->Written
= GL_TRUE
;
1071 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1072 bufObj
->Name
, size
, data
, usage
);
1079 ASSERT(ctx
->Driver
.BufferData
);
1080 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
1081 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
1087 _mesa_BufferSubDataARB(GLenum target
, GLintptrARB offset
,
1088 GLsizeiptrARB size
, const GLvoid
* data
)
1090 GET_CURRENT_CONTEXT(ctx
);
1091 struct gl_buffer_object
*bufObj
;
1092 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1094 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
1095 "glBufferSubDataARB" );
1097 /* error already recorded */
1104 bufObj
->Written
= GL_TRUE
;
1106 ASSERT(ctx
->Driver
.BufferSubData
);
1107 ctx
->Driver
.BufferSubData( ctx
, offset
, size
, data
, bufObj
);
1112 _mesa_GetBufferSubDataARB(GLenum target
, GLintptrARB offset
,
1113 GLsizeiptrARB size
, void * data
)
1115 GET_CURRENT_CONTEXT(ctx
);
1116 struct gl_buffer_object
*bufObj
;
1117 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1119 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
1120 "glGetBufferSubDataARB" );
1122 /* error already recorded */
1126 ASSERT(ctx
->Driver
.GetBufferSubData
);
1127 ctx
->Driver
.GetBufferSubData( ctx
, offset
, size
, data
, bufObj
);
1132 _mesa_MapBufferARB(GLenum target
, GLenum access
)
1134 GET_CURRENT_CONTEXT(ctx
);
1135 struct gl_buffer_object
* bufObj
;
1136 GLbitfield accessFlags
;
1140 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1143 case GL_READ_ONLY_ARB
:
1144 accessFlags
= GL_MAP_READ_BIT
;
1145 valid_access
= _mesa_is_desktop_gl(ctx
);
1147 case GL_WRITE_ONLY_ARB
:
1148 accessFlags
= GL_MAP_WRITE_BIT
;
1149 valid_access
= true;
1151 case GL_READ_WRITE_ARB
:
1152 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1153 valid_access
= _mesa_is_desktop_gl(ctx
);
1156 valid_access
= false;
1160 if (!valid_access
) {
1161 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1165 bufObj
= get_buffer(ctx
, "glMapBufferARB", target
);
1169 if (_mesa_bufferobj_mapped(bufObj
)) {
1170 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1174 if (!bufObj
->Size
) {
1175 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1176 "glMapBuffer(buffer size = 0)");
1180 ASSERT(ctx
->Driver
.MapBufferRange
);
1181 map
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
, accessFlags
, bufObj
);
1183 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1187 /* The driver callback should have set these fields.
1188 * This is important because other modules (like VBO) might call
1189 * the driver function directly.
1191 ASSERT(bufObj
->Pointer
== map
);
1192 ASSERT(bufObj
->Length
== bufObj
->Size
);
1193 ASSERT(bufObj
->Offset
== 0);
1194 bufObj
->AccessFlags
= accessFlags
;
1197 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1198 bufObj
->Written
= GL_TRUE
;
1201 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1202 bufObj
->Name
, bufObj
->Size
, access
);
1203 if (access
== GL_WRITE_ONLY_ARB
) {
1205 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1206 for (i
= 0; i
< bufObj
->Size
; i
++)
1213 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1215 /* buffer is 100 bytes larger than requested, fill with magic value */
1216 for (i
= 0; i
< 100; i
++) {
1217 buf
[bufObj
->Size
- i
- 1] = 123;
1222 return bufObj
->Pointer
;
1226 GLboolean GLAPIENTRY
1227 _mesa_UnmapBufferARB(GLenum target
)
1229 GET_CURRENT_CONTEXT(ctx
);
1230 struct gl_buffer_object
*bufObj
;
1231 GLboolean status
= GL_TRUE
;
1232 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1234 bufObj
= get_buffer(ctx
, "glUnmapBufferARB", target
);
1238 if (!_mesa_bufferobj_mapped(bufObj
)) {
1239 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1244 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1245 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1247 /* check that last 100 bytes are still = magic value */
1248 for (i
= 0; i
< 100; i
++) {
1249 GLuint pos
= bufObj
->Size
- i
- 1;
1250 if (buf
[pos
] != 123) {
1251 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1252 " at position %d (value = %u)\n",
1260 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1261 GLuint i
, unchanged
= 0;
1262 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1264 /* check which bytes changed */
1265 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1266 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1273 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1274 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1279 status
= ctx
->Driver
.UnmapBuffer( ctx
, bufObj
);
1280 bufObj
->AccessFlags
= default_access_mode(ctx
);
1281 ASSERT(bufObj
->Pointer
== NULL
);
1282 ASSERT(bufObj
->Offset
== 0);
1283 ASSERT(bufObj
->Length
== 0);
1290 _mesa_GetBufferParameterivARB(GLenum target
, GLenum pname
, GLint
*params
)
1292 GET_CURRENT_CONTEXT(ctx
);
1293 struct gl_buffer_object
*bufObj
;
1294 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1296 bufObj
= get_buffer(ctx
, "glGetBufferParameterivARB", target
);
1301 case GL_BUFFER_SIZE_ARB
:
1302 *params
= (GLint
) bufObj
->Size
;
1304 case GL_BUFFER_USAGE_ARB
:
1305 *params
= bufObj
->Usage
;
1307 case GL_BUFFER_ACCESS_ARB
:
1308 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1310 case GL_BUFFER_MAPPED_ARB
:
1311 *params
= _mesa_bufferobj_mapped(bufObj
);
1313 case GL_BUFFER_ACCESS_FLAGS
:
1314 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_map_buffer_range
)
1315 && !_mesa_is_gles3(ctx
))
1317 *params
= bufObj
->AccessFlags
;
1319 case GL_BUFFER_MAP_OFFSET
:
1320 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_map_buffer_range
)
1321 && !_mesa_is_gles3(ctx
))
1323 *params
= (GLint
) bufObj
->Offset
;
1325 case GL_BUFFER_MAP_LENGTH
:
1326 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_map_buffer_range
)
1327 && !_mesa_is_gles3(ctx
))
1329 *params
= (GLint
) bufObj
->Length
;
1332 ; /* fall-through */
1336 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1337 _mesa_lookup_enum_by_nr(pname
));
1343 * This is pretty much a duplicate of GetBufferParameteriv() but the
1344 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1347 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1349 GET_CURRENT_CONTEXT(ctx
);
1350 struct gl_buffer_object
*bufObj
;
1351 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1353 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
);
1358 case GL_BUFFER_SIZE_ARB
:
1359 *params
= bufObj
->Size
;
1361 case GL_BUFFER_USAGE_ARB
:
1362 *params
= bufObj
->Usage
;
1364 case GL_BUFFER_ACCESS_ARB
:
1365 *params
= simplified_access_mode(bufObj
->AccessFlags
);
1367 case GL_BUFFER_ACCESS_FLAGS
:
1368 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1370 *params
= bufObj
->AccessFlags
;
1372 case GL_BUFFER_MAPPED_ARB
:
1373 *params
= _mesa_bufferobj_mapped(bufObj
);
1375 case GL_BUFFER_MAP_OFFSET
:
1376 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1378 *params
= bufObj
->Offset
;
1380 case GL_BUFFER_MAP_LENGTH
:
1381 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1383 *params
= bufObj
->Length
;
1386 ; /* fall-through */
1390 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1391 _mesa_lookup_enum_by_nr(pname
));
1396 _mesa_GetBufferPointervARB(GLenum target
, GLenum pname
, GLvoid
**params
)
1398 GET_CURRENT_CONTEXT(ctx
);
1399 struct gl_buffer_object
* bufObj
;
1400 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1402 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1403 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1407 bufObj
= get_buffer(ctx
, "glGetBufferPointervARB", target
);
1411 *params
= bufObj
->Pointer
;
1416 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1417 GLintptr readOffset
, GLintptr writeOffset
,
1420 GET_CURRENT_CONTEXT(ctx
);
1421 struct gl_buffer_object
*src
, *dst
;
1422 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1424 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
);
1428 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
);
1432 if (_mesa_bufferobj_mapped(src
)) {
1433 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1434 "glCopyBufferSubData(readBuffer is mapped)");
1438 if (_mesa_bufferobj_mapped(dst
)) {
1439 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1440 "glCopyBufferSubData(writeBuffer is mapped)");
1444 if (readOffset
< 0) {
1445 _mesa_error(ctx
, GL_INVALID_VALUE
,
1446 "glCopyBufferSubData(readOffset = %d)", (int) readOffset
);
1450 if (writeOffset
< 0) {
1451 _mesa_error(ctx
, GL_INVALID_VALUE
,
1452 "glCopyBufferSubData(writeOffset = %d)", (int) writeOffset
);
1457 _mesa_error(ctx
, GL_INVALID_VALUE
,
1458 "glCopyBufferSubData(writeOffset = %d)", (int) size
);
1462 if (readOffset
+ size
> src
->Size
) {
1463 _mesa_error(ctx
, GL_INVALID_VALUE
,
1464 "glCopyBufferSubData(readOffset + size = %d)",
1465 (int) (readOffset
+ size
));
1469 if (writeOffset
+ size
> dst
->Size
) {
1470 _mesa_error(ctx
, GL_INVALID_VALUE
,
1471 "glCopyBufferSubData(writeOffset + size = %d)",
1472 (int) (writeOffset
+ size
));
1477 if (readOffset
+ size
<= writeOffset
) {
1480 else if (writeOffset
+ size
<= readOffset
) {
1484 /* overlapping src/dst is illegal */
1485 _mesa_error(ctx
, GL_INVALID_VALUE
,
1486 "glCopyBufferSubData(overlapping src/dst)");
1491 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1496 * See GL_ARB_map_buffer_range spec
1499 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1502 GET_CURRENT_CONTEXT(ctx
);
1503 struct gl_buffer_object
*bufObj
;
1506 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1508 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1509 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1510 "glMapBufferRange(extension not supported)");
1515 _mesa_error(ctx
, GL_INVALID_VALUE
,
1516 "glMapBufferRange(offset = %ld)", (long)offset
);
1521 _mesa_error(ctx
, GL_INVALID_VALUE
,
1522 "glMapBufferRange(length = %ld)", (long)length
);
1526 if (access
& ~(GL_MAP_READ_BIT
|
1528 GL_MAP_INVALIDATE_RANGE_BIT
|
1529 GL_MAP_INVALIDATE_BUFFER_BIT
|
1530 GL_MAP_FLUSH_EXPLICIT_BIT
|
1531 GL_MAP_UNSYNCHRONIZED_BIT
)) {
1532 /* generate an error if any undefind bit is set */
1533 _mesa_error(ctx
, GL_INVALID_VALUE
, "glMapBufferRange(access)");
1537 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1538 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1539 "glMapBufferRange(access indicates neither read or write)");
1543 if ((access
& GL_MAP_READ_BIT
) &&
1544 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
1545 GL_MAP_INVALIDATE_BUFFER_BIT
|
1546 GL_MAP_UNSYNCHRONIZED_BIT
))) {
1547 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1548 "glMapBufferRange(invalid access flags)");
1552 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1553 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1554 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1555 "glMapBufferRange(invalid access flags)");
1559 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
);
1563 if (offset
+ length
> bufObj
->Size
) {
1564 _mesa_error(ctx
, GL_INVALID_VALUE
,
1565 "glMapBufferRange(offset + length > size)");
1569 if (_mesa_bufferobj_mapped(bufObj
)) {
1570 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1571 "glMapBufferRange(buffer already mapped)");
1575 if (!bufObj
->Size
) {
1576 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1577 "glMapBufferRange(buffer size = 0)");
1581 /* Mapping zero bytes should return a non-null pointer. */
1583 static long dummy
= 0;
1584 bufObj
->Pointer
= &dummy
;
1585 bufObj
->Length
= length
;
1586 bufObj
->Offset
= offset
;
1587 bufObj
->AccessFlags
= access
;
1588 return bufObj
->Pointer
;
1591 ASSERT(ctx
->Driver
.MapBufferRange
);
1592 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
);
1594 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1597 /* The driver callback should have set all these fields.
1598 * This is important because other modules (like VBO) might call
1599 * the driver function directly.
1601 ASSERT(bufObj
->Pointer
== map
);
1602 ASSERT(bufObj
->Length
== length
);
1603 ASSERT(bufObj
->Offset
== offset
);
1604 ASSERT(bufObj
->AccessFlags
== access
);
1612 * See GL_ARB_map_buffer_range spec
1615 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1617 GET_CURRENT_CONTEXT(ctx
);
1618 struct gl_buffer_object
*bufObj
;
1619 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1621 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1622 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1623 "glFlushMappedBufferRange(extension not supported)");
1628 _mesa_error(ctx
, GL_INVALID_VALUE
,
1629 "glFlushMappedBufferRange(offset = %ld)", (long)offset
);
1634 _mesa_error(ctx
, GL_INVALID_VALUE
,
1635 "glFlushMappedBufferRange(length = %ld)", (long)length
);
1639 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
);
1643 if (!_mesa_bufferobj_mapped(bufObj
)) {
1644 /* buffer is not mapped */
1645 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1646 "glFlushMappedBufferRange(buffer is not mapped)");
1650 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1651 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1652 "glFlushMappedBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1656 if (offset
+ length
> bufObj
->Length
) {
1657 _mesa_error(ctx
, GL_INVALID_VALUE
,
1658 "glFlushMappedBufferRange(offset %ld + length %ld > mapped length %ld)",
1659 (long)offset
, (long)length
, (long)bufObj
->Length
);
1663 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
1665 if (ctx
->Driver
.FlushMappedBufferRange
)
1666 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
);
1670 #if FEATURE_APPLE_object_purgeable
1672 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1674 struct gl_buffer_object
*bufObj
;
1677 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1679 _mesa_error(ctx
, GL_INVALID_VALUE
,
1680 "glObjectPurgeable(name = 0x%x)", name
);
1683 if (!_mesa_is_bufferobj(bufObj
)) {
1684 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
1688 if (bufObj
->Purgeable
) {
1689 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1690 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1691 return GL_VOLATILE_APPLE
;
1694 bufObj
->Purgeable
= GL_TRUE
;
1696 retval
= GL_VOLATILE_APPLE
;
1697 if (ctx
->Driver
.BufferObjectPurgeable
)
1698 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
1705 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1707 struct gl_renderbuffer
*bufObj
;
1710 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1712 _mesa_error(ctx
, GL_INVALID_VALUE
,
1713 "glObjectUnpurgeable(name = 0x%x)", name
);
1717 if (bufObj
->Purgeable
) {
1718 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1719 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1720 return GL_VOLATILE_APPLE
;
1723 bufObj
->Purgeable
= GL_TRUE
;
1725 retval
= GL_VOLATILE_APPLE
;
1726 if (ctx
->Driver
.RenderObjectPurgeable
)
1727 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
1734 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1736 struct gl_texture_object
*bufObj
;
1739 bufObj
= _mesa_lookup_texture(ctx
, name
);
1741 _mesa_error(ctx
, GL_INVALID_VALUE
,
1742 "glObjectPurgeable(name = 0x%x)", name
);
1746 if (bufObj
->Purgeable
) {
1747 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1748 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
1749 return GL_VOLATILE_APPLE
;
1752 bufObj
->Purgeable
= GL_TRUE
;
1754 retval
= GL_VOLATILE_APPLE
;
1755 if (ctx
->Driver
.TextureObjectPurgeable
)
1756 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
1763 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1767 GET_CURRENT_CONTEXT(ctx
);
1768 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1771 _mesa_error(ctx
, GL_INVALID_VALUE
,
1772 "glObjectPurgeable(name = 0x%x)", name
);
1777 case GL_VOLATILE_APPLE
:
1778 case GL_RELEASED_APPLE
:
1782 _mesa_error(ctx
, GL_INVALID_ENUM
,
1783 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1788 switch (objectType
) {
1790 retval
= texture_object_purgeable(ctx
, name
, option
);
1792 case GL_RENDERBUFFER_EXT
:
1793 retval
= renderbuffer_purgeable(ctx
, name
, option
);
1795 case GL_BUFFER_OBJECT_APPLE
:
1796 retval
= buffer_object_purgeable(ctx
, name
, option
);
1799 _mesa_error(ctx
, GL_INVALID_ENUM
,
1800 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1805 /* In strict conformance to the spec, we must only return VOLATILE when
1806 * when passed the VOLATILE option. Madness.
1808 * XXX First fix the spec, then fix me.
1810 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
1815 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1817 struct gl_buffer_object
*bufObj
;
1820 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1822 _mesa_error(ctx
, GL_INVALID_VALUE
,
1823 "glObjectUnpurgeable(name = 0x%x)", name
);
1827 if (! bufObj
->Purgeable
) {
1828 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1829 "glObjectUnpurgeable(name = 0x%x) object is "
1830 " already \"unpurged\"", name
);
1834 bufObj
->Purgeable
= GL_FALSE
;
1837 if (ctx
->Driver
.BufferObjectUnpurgeable
)
1838 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
1845 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1847 struct gl_renderbuffer
*bufObj
;
1850 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
1852 _mesa_error(ctx
, GL_INVALID_VALUE
,
1853 "glObjectUnpurgeable(name = 0x%x)", name
);
1857 if (! bufObj
->Purgeable
) {
1858 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1859 "glObjectUnpurgeable(name = 0x%x) object is "
1860 " already \"unpurged\"", name
);
1864 bufObj
->Purgeable
= GL_FALSE
;
1867 if (ctx
->Driver
.RenderObjectUnpurgeable
)
1868 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
1875 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
1877 struct gl_texture_object
*bufObj
;
1880 bufObj
= _mesa_lookup_texture(ctx
, name
);
1882 _mesa_error(ctx
, GL_INVALID_VALUE
,
1883 "glObjectUnpurgeable(name = 0x%x)", name
);
1887 if (! bufObj
->Purgeable
) {
1888 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1889 "glObjectUnpurgeable(name = 0x%x) object is"
1890 " already \"unpurged\"", name
);
1894 bufObj
->Purgeable
= GL_FALSE
;
1897 if (ctx
->Driver
.TextureObjectUnpurgeable
)
1898 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
1905 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
1907 GET_CURRENT_CONTEXT(ctx
);
1908 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1911 _mesa_error(ctx
, GL_INVALID_VALUE
,
1912 "glObjectUnpurgeable(name = 0x%x)", name
);
1917 case GL_RETAINED_APPLE
:
1918 case GL_UNDEFINED_APPLE
:
1922 _mesa_error(ctx
, GL_INVALID_ENUM
,
1923 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1928 switch (objectType
) {
1929 case GL_BUFFER_OBJECT_APPLE
:
1930 return buffer_object_unpurgeable(ctx
, name
, option
);
1932 return texture_object_unpurgeable(ctx
, name
, option
);
1933 case GL_RENDERBUFFER_EXT
:
1934 return renderbuffer_unpurgeable(ctx
, name
, option
);
1936 _mesa_error(ctx
, GL_INVALID_ENUM
,
1937 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1945 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1946 GLenum pname
, GLint
*params
)
1948 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
1950 _mesa_error(ctx
, GL_INVALID_VALUE
,
1951 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
1956 case GL_PURGEABLE_APPLE
:
1957 *params
= bufObj
->Purgeable
;
1960 _mesa_error(ctx
, GL_INVALID_ENUM
,
1961 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1969 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
1970 GLenum pname
, GLint
*params
)
1972 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
1974 _mesa_error(ctx
, GL_INVALID_VALUE
,
1975 "glObjectUnpurgeable(name = 0x%x)", name
);
1980 case GL_PURGEABLE_APPLE
:
1981 *params
= rb
->Purgeable
;
1984 _mesa_error(ctx
, GL_INVALID_ENUM
,
1985 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1993 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
1994 GLenum pname
, GLint
*params
)
1996 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
1998 _mesa_error(ctx
, GL_INVALID_VALUE
,
1999 "glObjectUnpurgeable(name = 0x%x)", name
);
2004 case GL_PURGEABLE_APPLE
:
2005 *params
= texObj
->Purgeable
;
2008 _mesa_error(ctx
, GL_INVALID_ENUM
,
2009 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2017 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
2020 GET_CURRENT_CONTEXT(ctx
);
2023 _mesa_error(ctx
, GL_INVALID_VALUE
,
2024 "glGetObjectParameteriv(name = 0x%x)", name
);
2028 switch (objectType
) {
2030 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
2032 case GL_BUFFER_OBJECT_APPLE
:
2033 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
2035 case GL_RENDERBUFFER_EXT
:
2036 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
2039 _mesa_error(ctx
, GL_INVALID_ENUM
,
2040 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
2045 #endif /* FEATURE_APPLE_object_purgeable */
2048 set_ubo_binding(struct gl_context
*ctx
,
2050 struct gl_buffer_object
*bufObj
,
2055 struct gl_uniform_buffer_binding
*binding
;
2057 binding
= &ctx
->UniformBufferBindings
[index
];
2058 if (binding
->BufferObject
== bufObj
&&
2059 binding
->Offset
== offset
&&
2060 binding
->Size
== size
&&
2061 binding
->AutomaticSize
== autoSize
) {
2065 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
2067 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2068 binding
->Offset
= offset
;
2069 binding
->Size
= size
;
2070 binding
->AutomaticSize
= autoSize
;
2074 * Bind a region of a buffer object to a uniform block binding point.
2075 * \param index the uniform buffer binding point index
2076 * \param bufObj the buffer object
2077 * \param offset offset to the start of buffer object region
2078 * \param size size of the buffer object region
2081 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
2083 struct gl_buffer_object
*bufObj
,
2087 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2088 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2092 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
2093 _mesa_error(ctx
, GL_INVALID_VALUE
,
2094 "glBindBufferRange(offset misalgned %d/%d)", (int) offset
,
2095 ctx
->Const
.UniformBufferOffsetAlignment
);
2099 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2104 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2105 set_ubo_binding(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2110 * Bind a buffer object to a uniform block binding point.
2111 * As above, but offset = 0.
2114 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
2116 struct gl_buffer_object
*bufObj
)
2118 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2119 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2123 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2124 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2125 set_ubo_binding(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2127 set_ubo_binding(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2131 _mesa_BindBufferRange(GLenum target
, GLuint index
,
2132 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
2134 GET_CURRENT_CONTEXT(ctx
);
2135 struct gl_buffer_object
*bufObj
;
2138 bufObj
= ctx
->Shared
->NullBufferObj
;
2140 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2142 handle_bind_buffer_gen(ctx
, target
, buffer
, &bufObj
);
2145 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2146 "glBindBufferRange(invalid buffer=%u)", buffer
);
2151 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
2156 if (offset
+ size
> bufObj
->Size
) {
2157 _mesa_error(ctx
, GL_INVALID_VALUE
,
2158 "glBindBufferRange(offset + size %d > buffer size %d)",
2159 (int) (offset
+ size
), (int) (bufObj
->Size
));
2164 case GL_TRANSFORM_FEEDBACK_BUFFER
:
2165 _mesa_bind_buffer_range_transform_feedback(ctx
, index
, bufObj
,
2168 case GL_UNIFORM_BUFFER
:
2169 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
2172 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
2178 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
2180 GET_CURRENT_CONTEXT(ctx
);
2181 struct gl_buffer_object
*bufObj
;
2184 bufObj
= ctx
->Shared
->NullBufferObj
;
2186 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2188 handle_bind_buffer_gen(ctx
, target
, buffer
, &bufObj
);
2191 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2192 "glBindBufferBase(invalid buffer=%u)", buffer
);
2196 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
2197 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
2199 * "BindBufferBase is equivalent to calling BindBufferRange with offset
2200 * zero and size equal to the size of buffer."
2202 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
2204 * "If the parameter (starting offset or size) was not specified when the
2205 * buffer object was bound, zero is returned."
2207 * What happens if the size of the buffer changes? Does the size of the
2208 * buffer at the moment glBindBufferBase was called still play a role, like
2209 * the first quote would imply, or is the size meaningless in the
2210 * glBindBufferBase case like the second quote would suggest? The GL 4.1
2211 * core spec page 45 says:
2213 * "It is equivalent to calling BindBufferRange with offset zero, while
2214 * size is determined by the size of the bound buffer at the time the
2217 * My interpretation is that the GL 4.1 spec was a clarification of the
2218 * behavior, not a change. In particular, this choice will only make
2219 * rendering work in cases where it would have had undefined results.
2223 case GL_TRANSFORM_FEEDBACK_BUFFER
:
2224 _mesa_bind_buffer_base_transform_feedback(ctx
, index
, bufObj
);
2226 case GL_UNIFORM_BUFFER
:
2227 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
2230 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
2235 static void GLAPIENTRY
2236 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
2239 GET_CURRENT_CONTEXT(ctx
);
2240 struct gl_buffer_object
*bufObj
;
2241 const GLintptr end
= offset
+ length
;
2243 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2245 _mesa_error(ctx
, GL_INVALID_VALUE
,
2246 "glInvalidateBufferSubData(name = 0x%x) invalid object",
2251 /* The GL_ARB_invalidate_subdata spec says:
2253 * "An INVALID_VALUE error is generated if <offset> or <length> is
2254 * negative, or if <offset> + <length> is greater than the value of
2257 if (end
< 0 || end
> bufObj
->Size
) {
2258 _mesa_error(ctx
, GL_INVALID_VALUE
,
2259 "glInvalidateBufferSubData(invalid offset or length)");
2263 /* The GL_ARB_invalidate_subdata spec says:
2265 * "An INVALID_OPERATION error is generated if the buffer is currently
2266 * mapped by MapBuffer, or if the invalidate range intersects the range
2267 * currently mapped by MapBufferRange."
2269 if (_mesa_bufferobj_mapped(bufObj
)) {
2270 const GLintptr mapEnd
= bufObj
->Offset
+ bufObj
->Length
;
2272 /* The regions do not overlap if and only if the end of the discard
2273 * region is before the mapped region or the start of the discard region
2274 * is after the mapped region.
2276 * Note that 'end' and 'mapEnd' are the first byte *after* the discard
2277 * region and the mapped region, repsectively. It is okay for that byte
2278 * to be mapped (for 'end') or discarded (for 'mapEnd').
2280 if (!(end
<= bufObj
->Offset
|| offset
>= mapEnd
)) {
2281 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2282 "glInvalidateBufferSubData(intersection with mapped "
2288 /* We don't actually do anything for this yet. Just return after
2289 * validating the parameters and generating the required errors.
2294 static void GLAPIENTRY
2295 _mesa_InvalidateBufferData(GLuint buffer
)
2297 GET_CURRENT_CONTEXT(ctx
);
2298 struct gl_buffer_object
*bufObj
;
2300 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2302 _mesa_error(ctx
, GL_INVALID_VALUE
,
2303 "glInvalidateBufferData(name = 0x%x) invalid object",
2308 /* The GL_ARB_invalidate_subdata spec says:
2310 * "An INVALID_OPERATION error is generated if the buffer is currently
2311 * mapped by MapBuffer, or if the invalidate range intersects the range
2312 * currently mapped by MapBufferRange."
2314 if (_mesa_bufferobj_mapped(bufObj
)) {
2315 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2316 "glInvalidateBufferData(intersection with mapped "
2321 /* We don't actually do anything for this yet. Just return after
2322 * validating the parameters and generating the required errors.
2328 _mesa_init_bufferobj_dispatch(struct gl_context
*ctx
, struct _glapi_table
*disp
)
2330 SET_BindBufferARB(disp
, _mesa_BindBufferARB
);
2331 SET_BufferDataARB(disp
, _mesa_BufferDataARB
);
2332 SET_BufferSubDataARB(disp
, _mesa_BufferSubDataARB
);
2333 SET_DeleteBuffersARB(disp
, _mesa_DeleteBuffersARB
);
2334 SET_GenBuffersARB(disp
, _mesa_GenBuffersARB
);
2335 SET_GetBufferParameterivARB(disp
, _mesa_GetBufferParameterivARB
);
2336 SET_GetBufferPointervARB(disp
, _mesa_GetBufferPointervARB
);
2337 SET_GetBufferSubDataARB(disp
, _mesa_GetBufferSubDataARB
);
2338 SET_IsBufferARB(disp
, _mesa_IsBufferARB
);
2339 SET_MapBufferARB(disp
, _mesa_MapBufferARB
);
2340 SET_UnmapBufferARB(disp
, _mesa_UnmapBufferARB
);
2342 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2343 SET_BindBufferRangeEXT(disp
, _mesa_BindBufferRange
);
2344 SET_BindBufferBaseEXT(disp
, _mesa_BindBufferBase
);
2347 if (_mesa_is_desktop_gl(ctx
)) {
2348 SET_InvalidateBufferData(disp
, _mesa_InvalidateBufferData
);
2349 SET_InvalidateBufferSubData(disp
, _mesa_InvalidateBufferSubData
);