2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
40 #include "bufferobj.h"
42 #include "mfeatures.h"
49 /*#define BOUNDS_CHECK*/
52 #if FEATURE_OES_mapbuffer
53 #define DEFAULT_ACCESS GL_MAP_WRITE_BIT
55 #define DEFAULT_ACCESS (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)
60 * Used as a placeholder for buffer objects between glGenBuffers() and
61 * glBindBuffer() so that glIsBuffer() can work correctly.
63 static struct gl_buffer_object DummyBufferObject;
67 * Return pointer to address of a buffer object target.
68 * \param ctx the GL context
69 * \param target the buffer object target to be retrieved.
70 * \return pointer to pointer to the buffer object bound to \c target in the
71 * specified context or \c NULL if \c target is invalid.
73 static INLINE struct gl_buffer_object **
74 get_buffer_target(struct gl_context *ctx, GLenum target)
77 case GL_ARRAY_BUFFER_ARB:
78 return &ctx->Array.ArrayBufferObj;
79 case GL_ELEMENT_ARRAY_BUFFER_ARB:
80 return &ctx->Array.ElementArrayBufferObj;
81 case GL_PIXEL_PACK_BUFFER_EXT:
82 return &ctx->Pack.BufferObj;
83 case GL_PIXEL_UNPACK_BUFFER_EXT:
84 return &ctx->Unpack.BufferObj;
85 case GL_COPY_READ_BUFFER:
86 return &ctx->CopyReadBuffer;
87 case GL_COPY_WRITE_BUFFER:
88 return &ctx->CopyWriteBuffer;
89 #if FEATURE_EXT_transform_feedback
90 case GL_TRANSFORM_FEEDBACK_BUFFER:
91 if (ctx->Extensions.EXT_transform_feedback) {
92 return &ctx->TransformFeedback.CurrentBuffer;
96 case GL_TEXTURE_BUFFER:
97 if (ctx->Extensions.ARB_texture_buffer_object) {
98 return &ctx->Texture.BufferObject;
109 * Get the buffer object bound to the specified target in a GL context.
110 * \param ctx the GL context
111 * \param target the buffer object target to be retrieved.
112 * \return pointer to the buffer object bound to \c target in the
113 * specified context or \c NULL if \c target is invalid.
115 static INLINE struct gl_buffer_object *
116 get_buffer(struct gl_context *ctx, GLenum target)
118 struct gl_buffer_object **bufObj = get_buffer_target(ctx, target);
126 * Convert a GLbitfield describing the mapped buffer access flags
127 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
130 simplified_access_mode(GLbitfield access)
132 const GLbitfield rwFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
133 if ((access & rwFlags) == rwFlags)
134 return GL_READ_WRITE;
135 if ((access & GL_MAP_READ_BIT) == GL_MAP_READ_BIT)
137 if ((access & GL_MAP_WRITE_BIT) == GL_MAP_WRITE_BIT)
138 return GL_WRITE_ONLY;
139 return GL_READ_WRITE; /* this should never happen, but no big deal */
144 * Tests the subdata range parameters and sets the GL error code for
145 * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
147 * \param ctx GL context.
148 * \param target Buffer object target on which to operate.
149 * \param offset Offset of the first byte of the subdata range.
150 * \param size Size, in bytes, of the subdata range.
151 * \param caller Name of calling function for recording errors.
152 * \return A pointer to the buffer object bound to \c target in the
153 * specified context or \c NULL if any of the parameter or state
154 * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
157 * \sa glBufferSubDataARB, glGetBufferSubDataARB
159 static struct gl_buffer_object *
160 buffer_object_subdata_range_good( struct gl_context * ctx, GLenum target,
161 GLintptrARB offset, GLsizeiptrARB size,
164 struct gl_buffer_object *bufObj;
167 _mesa_error(ctx, GL_INVALID_VALUE, "%s(size < 0)", caller);
172 _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset < 0)", caller);
176 bufObj = get_buffer(ctx, target);
178 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", caller);
181 if (!_mesa_is_bufferobj(bufObj)) {
182 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
185 if (offset + size > bufObj->Size) {
186 _mesa_error(ctx, GL_INVALID_VALUE,
187 "%s(size + offset > buffer size)", caller);
190 if (_mesa_bufferobj_mapped(bufObj)) {
191 /* Buffer is currently mapped */
192 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
201 * Allocate and initialize a new buffer object.
203 * Default callback for the \c dd_function_table::NewBufferObject() hook.
205 static struct gl_buffer_object *
206 _mesa_new_buffer_object( struct gl_context *ctx, GLuint name, GLenum target )
208 struct gl_buffer_object *obj;
212 obj = MALLOC_STRUCT(gl_buffer_object);
213 _mesa_initialize_buffer_object(obj, name, target);
219 * Delete a buffer object.
221 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
224 _mesa_delete_buffer_object(struct gl_context *ctx,
225 struct gl_buffer_object *bufObj)
232 /* assign strange values here to help w/ debugging */
233 bufObj->RefCount = -1000;
236 _glthread_DESTROY_MUTEX(bufObj->Mutex);
243 * Set ptr to bufObj w/ reference counting.
246 _mesa_reference_buffer_object(struct gl_context *ctx,
247 struct gl_buffer_object **ptr,
248 struct gl_buffer_object *bufObj)
254 /* Unreference the old buffer */
255 GLboolean deleteFlag = GL_FALSE;
256 struct gl_buffer_object *oldObj = *ptr;
258 _glthread_LOCK_MUTEX(oldObj->Mutex);
259 ASSERT(oldObj->RefCount > 0);
262 printf("BufferObj %p %d DECR to %d\n",
263 (void *) oldObj, oldObj->Name, oldObj->RefCount);
265 deleteFlag = (oldObj->RefCount == 0);
266 _glthread_UNLOCK_MUTEX(oldObj->Mutex);
270 /* some sanity checking: don't delete a buffer still in use */
272 /* unfortunately, these tests are invalid during context tear-down */
273 ASSERT(ctx->Array.ArrayBufferObj != bufObj);
274 ASSERT(ctx->Array.ElementArrayBufferObj != bufObj);
275 ASSERT(ctx->Array.ArrayObj->Vertex.BufferObj != bufObj);
278 ASSERT(ctx->Driver.DeleteBuffer);
279 ctx->Driver.DeleteBuffer(ctx, oldObj);
287 /* reference new buffer */
288 _glthread_LOCK_MUTEX(bufObj->Mutex);
289 if (bufObj->RefCount == 0) {
290 /* this buffer's being deleted (look just above) */
291 /* Not sure this can every really happen. Warn if it does. */
292 _mesa_problem(NULL, "referencing deleted buffer object");
298 printf("BufferObj %p %d INCR to %d\n",
299 (void *) bufObj, bufObj->Name, bufObj->RefCount);
303 _glthread_UNLOCK_MUTEX(bufObj->Mutex);
309 * Initialize a buffer object to default values.
312 _mesa_initialize_buffer_object( struct gl_buffer_object *obj,
313 GLuint name, GLenum target )
317 memset(obj, 0, sizeof(struct gl_buffer_object));
318 _glthread_INIT_MUTEX(obj->Mutex);
321 obj->Usage = GL_STATIC_DRAW_ARB;
322 obj->AccessFlags = DEFAULT_ACCESS;
327 * Allocate space for and store data in a buffer object. Any data that was
328 * previously stored in the buffer object is lost. If \c data is \c NULL,
329 * memory will be allocated, but no copy will occur.
331 * This is the default callback for \c dd_function_table::BufferData()
332 * Note that all GL error checking will have been done already.
334 * \param ctx GL context.
335 * \param target Buffer object target on which to operate.
336 * \param size Size, in bytes, of the new data store.
337 * \param data Pointer to the data to store in the buffer object. This
338 * pointer may be \c NULL.
339 * \param usage Hints about how the data will be used.
340 * \param bufObj Object to be used.
342 * \return GL_TRUE for success, GL_FALSE for failure
343 * \sa glBufferDataARB, dd_function_table::BufferData.
346 _mesa_buffer_data( struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
347 const GLvoid * data, GLenum usage,
348 struct gl_buffer_object * bufObj )
352 (void) ctx; (void) target;
354 new_data = _mesa_realloc( bufObj->Data, bufObj->Size, size );
356 bufObj->Data = (GLubyte *) new_data;
358 bufObj->Usage = usage;
361 memcpy( bufObj->Data, data, size );
373 * Replace data in a subrange of buffer object. If the data range
374 * specified by \c size + \c offset extends beyond the end of the buffer or
375 * if \c data is \c NULL, no copy is performed.
377 * This is the default callback for \c dd_function_table::BufferSubData()
378 * Note that all GL error checking will have been done already.
380 * \param ctx GL context.
381 * \param target Buffer object target on which to operate.
382 * \param offset Offset of the first byte to be modified.
383 * \param size Size, in bytes, of the data range.
384 * \param data Pointer to the data to store in the buffer object.
385 * \param bufObj Object to be used.
387 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
390 _mesa_buffer_subdata( struct gl_context *ctx, GLenum target, GLintptrARB offset,
391 GLsizeiptrARB size, const GLvoid * data,
392 struct gl_buffer_object * bufObj )
394 (void) ctx; (void) target;
396 /* this should have been caught in _mesa_BufferSubData() */
397 ASSERT(size + offset <= bufObj->Size);
400 memcpy( (GLubyte *) bufObj->Data + offset, data, size );
406 * Retrieve data from a subrange of buffer object. If the data range
407 * specified by \c size + \c offset extends beyond the end of the buffer or
408 * if \c data is \c NULL, no copy is performed.
410 * This is the default callback for \c dd_function_table::GetBufferSubData()
411 * Note that all GL error checking will have been done already.
413 * \param ctx GL context.
414 * \param target Buffer object target on which to operate.
415 * \param offset Offset of the first byte to be fetched.
416 * \param size Size, in bytes, of the data range.
417 * \param data Destination for data
418 * \param bufObj Object to be used.
420 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
423 _mesa_buffer_get_subdata( struct gl_context *ctx,
424 GLenum target, GLintptrARB offset,
425 GLsizeiptrARB size, GLvoid * data,
426 struct gl_buffer_object * bufObj )
428 (void) ctx; (void) target;
430 if (bufObj->Data && ((GLsizeiptrARB) (size + offset) <= bufObj->Size)) {
431 memcpy( data, (GLubyte *) bufObj->Data + offset, size );
437 * Default callback for \c dd_function_tabel::MapBuffer().
439 * The function parameters will have been already tested for errors.
441 * \param ctx GL context.
442 * \param target Buffer object target on which to operate.
443 * \param access Information about how the buffer will be accessed.
444 * \param bufObj Object to be mapped.
445 * \return A pointer to the object's internal data store that can be accessed
448 * \sa glMapBufferARB, dd_function_table::MapBuffer
451 _mesa_buffer_map( struct gl_context *ctx, GLenum target, GLenum access,
452 struct gl_buffer_object *bufObj )
457 /* Just return a direct pointer to the data */
458 if (_mesa_bufferobj_mapped(bufObj)) {
459 /* already mapped! */
462 bufObj->Pointer = bufObj->Data;
463 bufObj->Length = bufObj->Size;
465 return bufObj->Pointer;
470 * Default fallback for \c dd_function_table::MapBufferRange().
471 * Called via glMapBufferRange().
474 _mesa_buffer_map_range( struct gl_context *ctx, GLenum target, GLintptr offset,
475 GLsizeiptr length, GLbitfield access,
476 struct gl_buffer_object *bufObj )
480 assert(!_mesa_bufferobj_mapped(bufObj));
481 /* Just return a direct pointer to the data */
482 bufObj->Pointer = bufObj->Data + offset;
483 bufObj->Length = length;
484 bufObj->Offset = offset;
485 bufObj->AccessFlags = access;
486 return bufObj->Pointer;
491 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
492 * Called via glFlushMappedBufferRange().
495 _mesa_buffer_flush_mapped_range( struct gl_context *ctx, GLenum target,
496 GLintptr offset, GLsizeiptr length,
497 struct gl_buffer_object *obj )
509 * Default callback for \c dd_function_table::MapBuffer().
511 * The input parameters will have been already tested for errors.
513 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
516 _mesa_buffer_unmap( struct gl_context *ctx, GLenum target,
517 struct gl_buffer_object *bufObj )
521 /* XXX we might assert here that bufObj->Pointer is non-null */
522 bufObj->Pointer = NULL;
525 bufObj->AccessFlags = 0x0;
531 * Default fallback for \c dd_function_table::CopyBufferSubData().
532 * Called via glCopyBuffserSubData().
535 _mesa_copy_buffer_subdata(struct gl_context *ctx,
536 struct gl_buffer_object *src,
537 struct gl_buffer_object *dst,
538 GLintptr readOffset, GLintptr writeOffset,
541 GLubyte *srcPtr, *dstPtr;
543 /* buffer should not already be mapped */
544 assert(!_mesa_bufferobj_mapped(src));
545 assert(!_mesa_bufferobj_mapped(dst));
547 srcPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_READ_BUFFER,
549 dstPtr = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_COPY_WRITE_BUFFER,
552 if (srcPtr && dstPtr)
553 memcpy(dstPtr + writeOffset, srcPtr + readOffset, size);
555 ctx->Driver.UnmapBuffer(ctx, GL_COPY_READ_BUFFER, src);
556 ctx->Driver.UnmapBuffer(ctx, GL_COPY_WRITE_BUFFER, dst);
562 * Initialize the state associated with buffer objects
565 _mesa_init_buffer_objects( struct gl_context *ctx )
567 memset(&DummyBufferObject, 0, sizeof(DummyBufferObject));
568 _glthread_INIT_MUTEX(DummyBufferObject.Mutex);
569 DummyBufferObject.RefCount = 1000*1000*1000; /* never delete */
571 _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
572 ctx->Shared->NullBufferObj);
573 _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj,
574 ctx->Shared->NullBufferObj);
576 _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer,
577 ctx->Shared->NullBufferObj);
578 _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer,
579 ctx->Shared->NullBufferObj);
584 _mesa_free_buffer_objects( struct gl_context *ctx )
586 _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj, NULL);
587 _mesa_reference_buffer_object(ctx, &ctx->Array.ElementArrayBufferObj, NULL);
589 _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer, NULL);
590 _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer, NULL);
595 * Bind the specified target to buffer for the specified context.
596 * Called by glBindBuffer() and other functions.
599 bind_buffer_object(struct gl_context *ctx, GLenum target, GLuint buffer)
601 struct gl_buffer_object *oldBufObj;
602 struct gl_buffer_object *newBufObj = NULL;
603 struct gl_buffer_object **bindTarget = NULL;
605 bindTarget = get_buffer_target(ctx, target);
607 _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferARB(target 0x%x)", target);
611 /* Get pointer to old buffer object (to be unbound) */
612 oldBufObj = *bindTarget;
613 if (oldBufObj && oldBufObj->Name == buffer)
614 return; /* rebinding the same buffer object- no change */
617 * Get pointer to new buffer object (newBufObj)
620 /* The spec says there's not a buffer object named 0, but we use
621 * one internally because it simplifies things.
623 newBufObj = ctx->Shared->NullBufferObj;
626 /* non-default buffer object */
627 newBufObj = _mesa_lookup_bufferobj(ctx, buffer);
628 if (!newBufObj || newBufObj == &DummyBufferObject) {
629 /* If this is a new buffer object id, or one which was generated but
630 * never used before, allocate a buffer object now.
632 ASSERT(ctx->Driver.NewBufferObject);
633 newBufObj = ctx->Driver.NewBufferObject(ctx, buffer, target);
635 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindBufferARB");
638 _mesa_HashInsert(ctx->Shared->BufferObjects, buffer, newBufObj);
642 /* bind new buffer */
643 _mesa_reference_buffer_object(ctx, bindTarget, newBufObj);
645 /* Pass BindBuffer call to device driver */
646 if (ctx->Driver.BindBuffer)
647 ctx->Driver.BindBuffer( ctx, target, newBufObj );
652 * Update the default buffer objects in the given context to reference those
653 * specified in the shared state and release those referencing the old
657 _mesa_update_default_objects_buffer_objects(struct gl_context *ctx)
659 /* Bind the NullBufferObj to remove references to those
660 * in the shared context hash table.
662 bind_buffer_object( ctx, GL_ARRAY_BUFFER_ARB, 0);
663 bind_buffer_object( ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
664 bind_buffer_object( ctx, GL_PIXEL_PACK_BUFFER_ARB, 0);
665 bind_buffer_object( ctx, GL_PIXEL_UNPACK_BUFFER_ARB, 0);
671 * Return the gl_buffer_object for the given ID.
672 * Always return NULL for ID 0.
674 struct gl_buffer_object *
675 _mesa_lookup_bufferobj(struct gl_context *ctx, GLuint buffer)
680 return (struct gl_buffer_object *)
681 _mesa_HashLookup(ctx->Shared->BufferObjects, buffer);
686 * If *ptr points to obj, set ptr = the Null/default buffer object.
687 * This is a helper for buffer object deletion.
688 * The GL spec says that deleting a buffer object causes it to get
689 * unbound from all arrays in the current context.
692 unbind(struct gl_context *ctx,
693 struct gl_buffer_object **ptr,
694 struct gl_buffer_object *obj)
697 _mesa_reference_buffer_object(ctx, ptr, ctx->Shared->NullBufferObj);
703 * Plug default/fallback buffer object functions into the device
707 _mesa_init_buffer_object_functions(struct dd_function_table *driver)
709 /* GL_ARB_vertex/pixel_buffer_object */
710 driver->NewBufferObject = _mesa_new_buffer_object;
711 driver->DeleteBuffer = _mesa_delete_buffer_object;
712 driver->BindBuffer = NULL;
713 driver->BufferData = _mesa_buffer_data;
714 driver->BufferSubData = _mesa_buffer_subdata;
715 driver->GetBufferSubData = _mesa_buffer_get_subdata;
716 driver->MapBuffer = _mesa_buffer_map;
717 driver->UnmapBuffer = _mesa_buffer_unmap;
719 /* GL_ARB_map_buffer_range */
720 driver->MapBufferRange = _mesa_buffer_map_range;
721 driver->FlushMappedBufferRange = _mesa_buffer_flush_mapped_range;
723 /* GL_ARB_copy_buffer */
724 driver->CopyBufferSubData = _mesa_copy_buffer_subdata;
729 /**********************************************************************/
731 /**********************************************************************/
734 _mesa_BindBufferARB(GLenum target, GLuint buffer)
736 GET_CURRENT_CONTEXT(ctx);
737 ASSERT_OUTSIDE_BEGIN_END(ctx);
739 if (MESA_VERBOSE & VERBOSE_API)
740 _mesa_debug(ctx, "glBindBuffer(%s, %u)\n",
741 _mesa_lookup_enum_by_nr(target), buffer);
743 bind_buffer_object(ctx, target, buffer);
748 * Delete a set of buffer objects.
750 * \param n Number of buffer objects to delete.
751 * \param ids Array of \c n buffer object IDs.
754 _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
756 GET_CURRENT_CONTEXT(ctx);
758 ASSERT_OUTSIDE_BEGIN_END(ctx);
759 FLUSH_VERTICES(ctx, 0);
762 _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteBuffersARB(n)");
766 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
768 for (i = 0; i < n; i++) {
769 struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]);
771 struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
774 ASSERT(bufObj->Name == ids[i] || bufObj == &DummyBufferObject);
776 if (_mesa_bufferobj_mapped(bufObj)) {
777 /* if mapped, unmap it now */
778 ctx->Driver.UnmapBuffer(ctx, 0, bufObj);
779 bufObj->AccessFlags = DEFAULT_ACCESS;
780 bufObj->Pointer = NULL;
783 /* unbind any vertex pointers bound to this buffer */
784 unbind(ctx, &arrayObj->Vertex.BufferObj, bufObj);
785 unbind(ctx, &arrayObj->Weight.BufferObj, bufObj);
786 unbind(ctx, &arrayObj->Normal.BufferObj, bufObj);
787 unbind(ctx, &arrayObj->Color.BufferObj, bufObj);
788 unbind(ctx, &arrayObj->SecondaryColor.BufferObj, bufObj);
789 unbind(ctx, &arrayObj->FogCoord.BufferObj, bufObj);
790 unbind(ctx, &arrayObj->Index.BufferObj, bufObj);
791 unbind(ctx, &arrayObj->EdgeFlag.BufferObj, bufObj);
792 for (j = 0; j < Elements(arrayObj->TexCoord); j++) {
793 unbind(ctx, &arrayObj->TexCoord[j].BufferObj, bufObj);
795 for (j = 0; j < Elements(arrayObj->VertexAttrib); j++) {
796 unbind(ctx, &arrayObj->VertexAttrib[j].BufferObj, bufObj);
799 if (ctx->Array.ArrayBufferObj == bufObj) {
800 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
802 if (ctx->Array.ElementArrayBufferObj == bufObj) {
803 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
806 /* unbind any pixel pack/unpack pointers bound to this buffer */
807 if (ctx->Pack.BufferObj == bufObj) {
808 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 );
810 if (ctx->Unpack.BufferObj == bufObj) {
811 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 );
814 /* The ID is immediately freed for re-use */
815 _mesa_HashRemove(ctx->Shared->BufferObjects, ids[i]);
816 _mesa_reference_buffer_object(ctx, &bufObj, NULL);
820 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
825 * Generate a set of unique buffer object IDs and store them in \c buffer.
827 * \param n Number of IDs to generate.
828 * \param buffer Array of \c n locations to store the IDs.
831 _mesa_GenBuffersARB(GLsizei n, GLuint *buffer)
833 GET_CURRENT_CONTEXT(ctx);
836 ASSERT_OUTSIDE_BEGIN_END(ctx);
838 if (MESA_VERBOSE & VERBOSE_API)
839 _mesa_debug(ctx, "glGenBuffers(%d)\n", n);
842 _mesa_error(ctx, GL_INVALID_VALUE, "glGenBuffersARB");
851 * This must be atomic (generation and allocation of buffer object IDs)
853 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
855 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->BufferObjects, n);
857 /* Insert the ID and pointer to dummy buffer object into hash table */
858 for (i = 0; i < n; i++) {
859 _mesa_HashInsert(ctx->Shared->BufferObjects, first + i,
861 buffer[i] = first + i;
864 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
869 * Determine if ID is the name of a buffer object.
871 * \param id ID of the potential buffer object.
872 * \return \c GL_TRUE if \c id is the name of a buffer object,
873 * \c GL_FALSE otherwise.
876 _mesa_IsBufferARB(GLuint id)
878 struct gl_buffer_object *bufObj;
879 GET_CURRENT_CONTEXT(ctx);
880 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
882 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
883 bufObj = _mesa_lookup_bufferobj(ctx, id);
884 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
886 return bufObj && bufObj != &DummyBufferObject;
891 _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
892 const GLvoid * data, GLenum usage)
894 GET_CURRENT_CONTEXT(ctx);
895 struct gl_buffer_object *bufObj;
896 ASSERT_OUTSIDE_BEGIN_END(ctx);
898 if (MESA_VERBOSE & VERBOSE_API)
899 _mesa_debug(ctx, "glBufferData(%s, %ld, %p, %s)\n",
900 _mesa_lookup_enum_by_nr(target),
901 (long int) size, data,
902 _mesa_lookup_enum_by_nr(usage));
905 _mesa_error(ctx, GL_INVALID_VALUE, "glBufferDataARB(size < 0)");
910 case GL_STREAM_DRAW_ARB:
911 case GL_STREAM_READ_ARB:
912 case GL_STREAM_COPY_ARB:
913 case GL_STATIC_DRAW_ARB:
914 case GL_STATIC_READ_ARB:
915 case GL_STATIC_COPY_ARB:
916 case GL_DYNAMIC_DRAW_ARB:
917 case GL_DYNAMIC_READ_ARB:
918 case GL_DYNAMIC_COPY_ARB:
922 _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)");
926 bufObj = get_buffer(ctx, target);
928 _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(target)" );
931 if (!_mesa_is_bufferobj(bufObj)) {
932 _mesa_error(ctx, GL_INVALID_OPERATION, "glBufferDataARB(buffer 0)" );
936 if (_mesa_bufferobj_mapped(bufObj)) {
937 /* Unmap the existing buffer. We'll replace it now. Not an error. */
938 ctx->Driver.UnmapBuffer(ctx, target, bufObj);
939 bufObj->AccessFlags = DEFAULT_ACCESS;
940 ASSERT(bufObj->Pointer == NULL);
943 FLUSH_VERTICES(ctx, _NEW_BUFFER_OBJECT);
945 bufObj->Written = GL_TRUE;
948 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
949 bufObj->Name, size, data, usage);
956 ASSERT(ctx->Driver.BufferData);
957 if (!ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj )) {
958 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB()");
964 _mesa_BufferSubDataARB(GLenum target, GLintptrARB offset,
965 GLsizeiptrARB size, const GLvoid * data)
967 GET_CURRENT_CONTEXT(ctx);
968 struct gl_buffer_object *bufObj;
969 ASSERT_OUTSIDE_BEGIN_END(ctx);
971 bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
972 "glBufferSubDataARB" );
974 /* error already recorded */
981 bufObj->Written = GL_TRUE;
983 ASSERT(ctx->Driver.BufferSubData);
984 ctx->Driver.BufferSubData( ctx, target, offset, size, data, bufObj );
989 _mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset,
990 GLsizeiptrARB size, void * data)
992 GET_CURRENT_CONTEXT(ctx);
993 struct gl_buffer_object *bufObj;
994 ASSERT_OUTSIDE_BEGIN_END(ctx);
996 bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
997 "glGetBufferSubDataARB" );
999 /* error already recorded */
1003 ASSERT(ctx->Driver.GetBufferSubData);
1004 ctx->Driver.GetBufferSubData( ctx, target, offset, size, data, bufObj );
1009 _mesa_MapBufferARB(GLenum target, GLenum access)
1011 GET_CURRENT_CONTEXT(ctx);
1012 struct gl_buffer_object * bufObj;
1013 GLbitfield accessFlags;
1016 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
1019 case GL_READ_ONLY_ARB:
1020 accessFlags = GL_MAP_READ_BIT;
1022 case GL_WRITE_ONLY_ARB:
1023 accessFlags = GL_MAP_WRITE_BIT;
1025 case GL_READ_WRITE_ARB:
1026 accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
1029 _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)");
1033 bufObj = get_buffer(ctx, target);
1035 _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(target)" );
1038 if (!_mesa_is_bufferobj(bufObj)) {
1039 _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(buffer 0)" );
1042 if (_mesa_bufferobj_mapped(bufObj)) {
1043 _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(already mapped)");
1047 ASSERT(ctx->Driver.MapBuffer);
1048 map = ctx->Driver.MapBuffer( ctx, target, access, bufObj );
1050 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
1054 /* The driver callback should have set these fields.
1055 * This is important because other modules (like VBO) might call
1056 * the driver function directly.
1058 ASSERT(bufObj->Pointer == map);
1059 ASSERT(bufObj->Length == bufObj->Size);
1060 ASSERT(bufObj->Offset == 0);
1061 bufObj->AccessFlags = accessFlags;
1064 if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB)
1065 bufObj->Written = GL_TRUE;
1068 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1069 bufObj->Name, bufObj->Size, access);
1070 if (access == GL_WRITE_ONLY_ARB) {
1072 GLubyte *b = (GLubyte *) bufObj->Pointer;
1073 for (i = 0; i < bufObj->Size; i++)
1080 GLubyte *buf = (GLubyte *) bufObj->Pointer;
1082 /* buffer is 100 bytes larger than requested, fill with magic value */
1083 for (i = 0; i < 100; i++) {
1084 buf[bufObj->Size - i - 1] = 123;
1089 return bufObj->Pointer;
1093 GLboolean GLAPIENTRY
1094 _mesa_UnmapBufferARB(GLenum target)
1096 GET_CURRENT_CONTEXT(ctx);
1097 struct gl_buffer_object *bufObj;
1098 GLboolean status = GL_TRUE;
1099 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1101 bufObj = get_buffer(ctx, target);
1103 _mesa_error(ctx, GL_INVALID_ENUM, "glUnmapBufferARB(target)" );
1106 if (!_mesa_is_bufferobj(bufObj)) {
1107 _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB" );
1110 if (!_mesa_bufferobj_mapped(bufObj)) {
1111 _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB");
1116 if (bufObj->Access != GL_READ_ONLY_ARB) {
1117 GLubyte *buf = (GLubyte *) bufObj->Pointer;
1119 /* check that last 100 bytes are still = magic value */
1120 for (i = 0; i < 100; i++) {
1121 GLuint pos = bufObj->Size - i - 1;
1122 if (buf[pos] != 123) {
1123 _mesa_warning(ctx, "Out of bounds buffer object write detected"
1124 " at position %d (value = %u)\n",
1132 if (bufObj->AccessFlags & GL_MAP_WRITE_BIT) {
1133 GLuint i, unchanged = 0;
1134 GLubyte *b = (GLubyte *) bufObj->Pointer;
1136 /* check which bytes changed */
1137 for (i = 0; i < bufObj->Size - 1; i++) {
1138 if (b[i] == (i & 0xff) && b[i+1] == ((i+1) & 0xff)) {
1145 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1146 bufObj->Name, unchanged, bufObj->Size, pos);
1151 status = ctx->Driver.UnmapBuffer( ctx, target, bufObj );
1152 bufObj->AccessFlags = DEFAULT_ACCESS;
1153 ASSERT(bufObj->Pointer == NULL);
1154 ASSERT(bufObj->Offset == 0);
1155 ASSERT(bufObj->Length == 0);
1162 _mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params)
1164 GET_CURRENT_CONTEXT(ctx);
1165 struct gl_buffer_object *bufObj;
1166 ASSERT_OUTSIDE_BEGIN_END(ctx);
1168 bufObj = get_buffer(ctx, target);
1170 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(target)" );
1173 if (!_mesa_is_bufferobj(bufObj)) {
1174 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameterivARB" );
1179 case GL_BUFFER_SIZE_ARB:
1180 *params = (GLint) bufObj->Size;
1182 case GL_BUFFER_USAGE_ARB:
1183 *params = bufObj->Usage;
1185 case GL_BUFFER_ACCESS_ARB:
1186 *params = simplified_access_mode(bufObj->AccessFlags);
1188 case GL_BUFFER_MAPPED_ARB:
1189 *params = _mesa_bufferobj_mapped(bufObj);
1191 case GL_BUFFER_ACCESS_FLAGS:
1192 if (ctx->VersionMajor < 3)
1194 *params = bufObj->AccessFlags;
1196 case GL_BUFFER_MAP_OFFSET:
1197 if (ctx->VersionMajor < 3)
1199 *params = (GLint) bufObj->Offset;
1201 case GL_BUFFER_MAP_LENGTH:
1202 if (ctx->VersionMajor < 3)
1204 *params = (GLint) bufObj->Length;
1207 ; /* fall-through */
1211 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname=%s)",
1212 _mesa_lookup_enum_by_nr(pname));
1218 * This is pretty much a duplicate of GetBufferParameteriv() but the
1219 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1222 _mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params)
1224 GET_CURRENT_CONTEXT(ctx);
1225 struct gl_buffer_object *bufObj;
1226 ASSERT_OUTSIDE_BEGIN_END(ctx);
1228 bufObj = get_buffer(ctx, target);
1230 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(target)" );
1233 if (!_mesa_is_bufferobj(bufObj)) {
1234 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferParameteri64v" );
1239 case GL_BUFFER_SIZE_ARB:
1240 *params = bufObj->Size;
1242 case GL_BUFFER_USAGE_ARB:
1243 *params = bufObj->Usage;
1245 case GL_BUFFER_ACCESS_ARB:
1246 *params = simplified_access_mode(bufObj->AccessFlags);
1248 case GL_BUFFER_ACCESS_FLAGS:
1249 if (ctx->VersionMajor < 3)
1251 *params = bufObj->AccessFlags;
1253 case GL_BUFFER_MAPPED_ARB:
1254 *params = _mesa_bufferobj_mapped(bufObj);
1256 case GL_BUFFER_MAP_OFFSET:
1257 if (ctx->VersionMajor < 3)
1259 *params = bufObj->Offset;
1261 case GL_BUFFER_MAP_LENGTH:
1262 if (ctx->VersionMajor < 3)
1264 *params = bufObj->Length;
1267 ; /* fall-through */
1271 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname=%s)",
1272 _mesa_lookup_enum_by_nr(pname));
1277 _mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params)
1279 GET_CURRENT_CONTEXT(ctx);
1280 struct gl_buffer_object * bufObj;
1281 ASSERT_OUTSIDE_BEGIN_END(ctx);
1283 if (pname != GL_BUFFER_MAP_POINTER_ARB) {
1284 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(pname)");
1288 bufObj = get_buffer(ctx, target);
1290 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(target)" );
1293 if (!_mesa_is_bufferobj(bufObj)) {
1294 _mesa_error(ctx, GL_INVALID_OPERATION, "glGetBufferPointervARB" );
1298 *params = bufObj->Pointer;
1303 _mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget,
1304 GLintptr readOffset, GLintptr writeOffset,
1307 GET_CURRENT_CONTEXT(ctx);
1308 struct gl_buffer_object *src, *dst;
1309 ASSERT_OUTSIDE_BEGIN_END(ctx);
1311 src = get_buffer(ctx, readTarget);
1312 if (!src || !_mesa_is_bufferobj(src)) {
1313 _mesa_error(ctx, GL_INVALID_ENUM,
1314 "glCopyBuffserSubData(readTarget = 0x%x)", readTarget);
1318 dst = get_buffer(ctx, writeTarget);
1319 if (!dst || !_mesa_is_bufferobj(dst)) {
1320 _mesa_error(ctx, GL_INVALID_ENUM,
1321 "glCopyBuffserSubData(writeTarget = 0x%x)", writeTarget);
1325 if (_mesa_bufferobj_mapped(src)) {
1326 _mesa_error(ctx, GL_INVALID_OPERATION,
1327 "glCopyBuffserSubData(readBuffer is mapped)");
1331 if (_mesa_bufferobj_mapped(dst)) {
1332 _mesa_error(ctx, GL_INVALID_OPERATION,
1333 "glCopyBuffserSubData(writeBuffer is mapped)");
1337 if (readOffset < 0) {
1338 _mesa_error(ctx, GL_INVALID_VALUE,
1339 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset);
1343 if (writeOffset < 0) {
1344 _mesa_error(ctx, GL_INVALID_VALUE,
1345 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset);
1349 if (readOffset + size > src->Size) {
1350 _mesa_error(ctx, GL_INVALID_VALUE,
1351 "glCopyBuffserSubData(readOffset + size = %d)",
1352 (int) (readOffset + size));
1356 if (writeOffset + size > dst->Size) {
1357 _mesa_error(ctx, GL_INVALID_VALUE,
1358 "glCopyBuffserSubData(writeOffset + size = %d)",
1359 (int) (writeOffset + size));
1364 if (readOffset + size <= writeOffset) {
1367 else if (writeOffset + size <= readOffset) {
1371 /* overlapping src/dst is illegal */
1372 _mesa_error(ctx, GL_INVALID_VALUE,
1373 "glCopyBuffserSubData(overlapping src/dst)");
1378 ctx->Driver.CopyBufferSubData(ctx, src, dst, readOffset, writeOffset, size);
1383 * See GL_ARB_map_buffer_range spec
1386 _mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,
1389 GET_CURRENT_CONTEXT(ctx);
1390 struct gl_buffer_object *bufObj;
1393 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
1395 if (!ctx->Extensions.ARB_map_buffer_range) {
1396 _mesa_error(ctx, GL_INVALID_OPERATION,
1397 "glMapBufferRange(extension not supported)");
1402 _mesa_error(ctx, GL_INVALID_VALUE,
1403 "glMapBufferRange(offset = %ld)", (long)offset);
1408 _mesa_error(ctx, GL_INVALID_VALUE,
1409 "glMapBufferRange(length = %ld)", (long)length);
1413 if (access & ~(GL_MAP_READ_BIT |
1415 GL_MAP_INVALIDATE_RANGE_BIT |
1416 GL_MAP_INVALIDATE_BUFFER_BIT |
1417 GL_MAP_FLUSH_EXPLICIT_BIT |
1418 GL_MAP_UNSYNCHRONIZED_BIT)) {
1419 /* generate an error if any undefind bit is set */
1420 _mesa_error(ctx, GL_INVALID_VALUE, "glMapBufferRange(access)");
1424 if ((access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == 0) {
1425 _mesa_error(ctx, GL_INVALID_OPERATION,
1426 "glMapBufferRange(access indicates neither read or write)");
1430 if ((access & GL_MAP_READ_BIT) &&
1431 (access & (GL_MAP_INVALIDATE_RANGE_BIT |
1432 GL_MAP_INVALIDATE_BUFFER_BIT |
1433 GL_MAP_UNSYNCHRONIZED_BIT))) {
1434 _mesa_error(ctx, GL_INVALID_OPERATION,
1435 "glMapBufferRange(invalid access flags)");
1439 if ((access & GL_MAP_FLUSH_EXPLICIT_BIT) &&
1440 ((access & GL_MAP_WRITE_BIT) == 0)) {
1441 _mesa_error(ctx, GL_INVALID_OPERATION,
1442 "glMapBufferRange(invalid access flags)");
1446 bufObj = get_buffer(ctx, target);
1447 if (!bufObj || !_mesa_is_bufferobj(bufObj)) {
1448 _mesa_error(ctx, GL_INVALID_ENUM,
1449 "glMapBufferRange(target = 0x%x)", target);
1453 if (offset + length > bufObj->Size) {
1454 _mesa_error(ctx, GL_INVALID_VALUE,
1455 "glMapBufferRange(offset + length > size)");
1459 if (_mesa_bufferobj_mapped(bufObj)) {
1460 _mesa_error(ctx, GL_INVALID_OPERATION,
1461 "glMapBufferRange(buffer already mapped)");
1465 ASSERT(ctx->Driver.MapBufferRange);
1466 map = ctx->Driver.MapBufferRange(ctx, target, offset, length,
1469 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
1472 /* The driver callback should have set all these fields.
1473 * This is important because other modules (like VBO) might call
1474 * the driver function directly.
1476 ASSERT(bufObj->Pointer == map);
1477 ASSERT(bufObj->Length == length);
1478 ASSERT(bufObj->Offset == offset);
1479 ASSERT(bufObj->AccessFlags == access);
1487 * See GL_ARB_map_buffer_range spec
1490 _mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length)
1492 GET_CURRENT_CONTEXT(ctx);
1493 struct gl_buffer_object *bufObj;
1494 ASSERT_OUTSIDE_BEGIN_END(ctx);
1496 if (!ctx->Extensions.ARB_map_buffer_range) {
1497 _mesa_error(ctx, GL_INVALID_OPERATION,
1498 "glMapBufferRange(extension not supported)");
1503 _mesa_error(ctx, GL_INVALID_VALUE,
1504 "glMapBufferRange(offset = %ld)", (long)offset);
1509 _mesa_error(ctx, GL_INVALID_VALUE,
1510 "glMapBufferRange(length = %ld)", (long)length);
1514 bufObj = get_buffer(ctx, target);
1516 _mesa_error(ctx, GL_INVALID_ENUM,
1517 "glMapBufferRange(target = 0x%x)", target);
1521 if (!_mesa_is_bufferobj(bufObj)) {
1522 _mesa_error(ctx, GL_INVALID_OPERATION,
1523 "glMapBufferRange(current buffer is 0)");
1527 if (!_mesa_bufferobj_mapped(bufObj)) {
1528 /* buffer is not mapped */
1529 _mesa_error(ctx, GL_INVALID_OPERATION,
1530 "glMapBufferRange(buffer is not mapped)");
1534 if ((bufObj->AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT) == 0) {
1535 _mesa_error(ctx, GL_INVALID_OPERATION,
1536 "glMapBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1540 if (offset + length > bufObj->Length) {
1541 _mesa_error(ctx, GL_INVALID_VALUE,
1542 "glMapBufferRange(offset %ld + length %ld > mapped length %ld)",
1543 (long)offset, (long)length, (long)bufObj->Length);
1547 ASSERT(bufObj->AccessFlags & GL_MAP_WRITE_BIT);
1549 if (ctx->Driver.FlushMappedBufferRange)
1550 ctx->Driver.FlushMappedBufferRange(ctx, target, offset, length, bufObj);
1554 #if FEATURE_APPLE_object_purgeable
1556 buffer_object_purgeable(struct gl_context *ctx, GLuint name, GLenum option)
1558 struct gl_buffer_object *bufObj;
1561 bufObj = _mesa_lookup_bufferobj(ctx, name);
1563 _mesa_error(ctx, GL_INVALID_VALUE,
1564 "glObjectPurgeable(name = 0x%x)", name);
1567 if (!_mesa_is_bufferobj(bufObj)) {
1568 _mesa_error(ctx, GL_INVALID_OPERATION, "glObjectPurgeable(buffer 0)" );
1572 if (bufObj->Purgeable) {
1573 _mesa_error(ctx, GL_INVALID_OPERATION,
1574 "glObjectPurgeable(name = 0x%x) is already purgeable", name);
1575 return GL_VOLATILE_APPLE;
1578 bufObj->Purgeable = GL_TRUE;
1580 retval = GL_VOLATILE_APPLE;
1581 if (ctx->Driver.BufferObjectPurgeable)
1582 retval = ctx->Driver.BufferObjectPurgeable(ctx, bufObj, option);
1589 renderbuffer_purgeable(struct gl_context *ctx, GLuint name, GLenum option)
1591 struct gl_renderbuffer *bufObj;
1594 bufObj = _mesa_lookup_renderbuffer(ctx, name);
1596 _mesa_error(ctx, GL_INVALID_VALUE,
1597 "glObjectUnpurgeable(name = 0x%x)", name);
1601 if (bufObj->Purgeable) {
1602 _mesa_error(ctx, GL_INVALID_OPERATION,
1603 "glObjectPurgeable(name = 0x%x) is already purgeable", name);
1604 return GL_VOLATILE_APPLE;
1607 bufObj->Purgeable = GL_TRUE;
1609 retval = GL_VOLATILE_APPLE;
1610 if (ctx->Driver.RenderObjectPurgeable)
1611 retval = ctx->Driver.RenderObjectPurgeable(ctx, bufObj, option);
1618 texture_object_purgeable(struct gl_context *ctx, GLuint name, GLenum option)
1620 struct gl_texture_object *bufObj;
1623 bufObj = _mesa_lookup_texture(ctx, name);
1625 _mesa_error(ctx, GL_INVALID_VALUE,
1626 "glObjectPurgeable(name = 0x%x)", name);
1630 if (bufObj->Purgeable) {
1631 _mesa_error(ctx, GL_INVALID_OPERATION,
1632 "glObjectPurgeable(name = 0x%x) is already purgeable", name);
1633 return GL_VOLATILE_APPLE;
1636 bufObj->Purgeable = GL_TRUE;
1638 retval = GL_VOLATILE_APPLE;
1639 if (ctx->Driver.TextureObjectPurgeable)
1640 retval = ctx->Driver.TextureObjectPurgeable(ctx, bufObj, option);
1647 _mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
1651 GET_CURRENT_CONTEXT(ctx);
1652 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1655 _mesa_error(ctx, GL_INVALID_VALUE,
1656 "glObjectPurgeable(name = 0x%x)", name);
1661 case GL_VOLATILE_APPLE:
1662 case GL_RELEASED_APPLE:
1666 _mesa_error(ctx, GL_INVALID_ENUM,
1667 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1672 switch (objectType) {
1674 retval = texture_object_purgeable(ctx, name, option);
1676 case GL_RENDERBUFFER_EXT:
1677 retval = renderbuffer_purgeable(ctx, name, option);
1679 case GL_BUFFER_OBJECT_APPLE:
1680 retval = buffer_object_purgeable(ctx, name, option);
1683 _mesa_error(ctx, GL_INVALID_ENUM,
1684 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1689 /* In strict conformance to the spec, we must only return VOLATILE when
1690 * when passed the VOLATILE option. Madness.
1692 * XXX First fix the spec, then fix me.
1694 return option == GL_VOLATILE_APPLE ? GL_VOLATILE_APPLE : retval;
1699 buffer_object_unpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
1701 struct gl_buffer_object *bufObj;
1704 bufObj = _mesa_lookup_bufferobj(ctx, name);
1706 _mesa_error(ctx, GL_INVALID_VALUE,
1707 "glObjectUnpurgeable(name = 0x%x)", name);
1711 if (! bufObj->Purgeable) {
1712 _mesa_error(ctx, GL_INVALID_OPERATION,
1713 "glObjectUnpurgeable(name = 0x%x) object is "
1714 " already \"unpurged\"", name);
1718 bufObj->Purgeable = GL_FALSE;
1721 if (ctx->Driver.BufferObjectUnpurgeable)
1722 retval = ctx->Driver.BufferObjectUnpurgeable(ctx, bufObj, option);
1729 renderbuffer_unpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
1731 struct gl_renderbuffer *bufObj;
1734 bufObj = _mesa_lookup_renderbuffer(ctx, name);
1736 _mesa_error(ctx, GL_INVALID_VALUE,
1737 "glObjectUnpurgeable(name = 0x%x)", name);
1741 if (! bufObj->Purgeable) {
1742 _mesa_error(ctx, GL_INVALID_OPERATION,
1743 "glObjectUnpurgeable(name = 0x%x) object is "
1744 " already \"unpurged\"", name);
1748 bufObj->Purgeable = GL_FALSE;
1751 if (ctx->Driver.RenderObjectUnpurgeable)
1752 retval = ctx->Driver.RenderObjectUnpurgeable(ctx, bufObj, option);
1759 texture_object_unpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
1761 struct gl_texture_object *bufObj;
1764 bufObj = _mesa_lookup_texture(ctx, name);
1766 _mesa_error(ctx, GL_INVALID_VALUE,
1767 "glObjectUnpurgeable(name = 0x%x)", name);
1771 if (! bufObj->Purgeable) {
1772 _mesa_error(ctx, GL_INVALID_OPERATION,
1773 "glObjectUnpurgeable(name = 0x%x) object is"
1774 " already \"unpurged\"", name);
1778 bufObj->Purgeable = GL_FALSE;
1781 if (ctx->Driver.TextureObjectUnpurgeable)
1782 retval = ctx->Driver.TextureObjectUnpurgeable(ctx, bufObj, option);
1789 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
1791 GET_CURRENT_CONTEXT(ctx);
1792 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1795 _mesa_error(ctx, GL_INVALID_VALUE,
1796 "glObjectUnpurgeable(name = 0x%x)", name);
1801 case GL_RETAINED_APPLE:
1802 case GL_UNDEFINED_APPLE:
1806 _mesa_error(ctx, GL_INVALID_ENUM,
1807 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1812 switch (objectType) {
1813 case GL_BUFFER_OBJECT_APPLE:
1814 return buffer_object_unpurgeable(ctx, name, option);
1816 return texture_object_unpurgeable(ctx, name, option);
1817 case GL_RENDERBUFFER_EXT:
1818 return renderbuffer_unpurgeable(ctx, name, option);
1820 _mesa_error(ctx, GL_INVALID_ENUM,
1821 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1829 get_buffer_object_parameteriv(struct gl_context *ctx, GLuint name,
1830 GLenum pname, GLint *params)
1832 struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, name);
1834 _mesa_error(ctx, GL_INVALID_VALUE,
1835 "glGetObjectParameteriv(name = 0x%x) invalid object", name);
1840 case GL_PURGEABLE_APPLE:
1841 *params = bufObj->Purgeable;
1844 _mesa_error(ctx, GL_INVALID_ENUM,
1845 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1853 get_renderbuffer_parameteriv(struct gl_context *ctx, GLuint name,
1854 GLenum pname, GLint *params)
1856 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
1858 _mesa_error(ctx, GL_INVALID_VALUE,
1859 "glObjectUnpurgeable(name = 0x%x)", name);
1864 case GL_PURGEABLE_APPLE:
1865 *params = rb->Purgeable;
1868 _mesa_error(ctx, GL_INVALID_ENUM,
1869 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1877 get_texture_object_parameteriv(struct gl_context *ctx, GLuint name,
1878 GLenum pname, GLint *params)
1880 struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
1882 _mesa_error(ctx, GL_INVALID_VALUE,
1883 "glObjectUnpurgeable(name = 0x%x)", name);
1888 case GL_PURGEABLE_APPLE:
1889 *params = texObj->Purgeable;
1892 _mesa_error(ctx, GL_INVALID_ENUM,
1893 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1901 _mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname,
1904 GET_CURRENT_CONTEXT(ctx);
1907 _mesa_error(ctx, GL_INVALID_VALUE,
1908 "glGetObjectParameteriv(name = 0x%x)", name);
1912 switch (objectType) {
1914 get_texture_object_parameteriv(ctx, name, pname, params);
1916 case GL_BUFFER_OBJECT_APPLE:
1917 get_buffer_object_parameteriv(ctx, name, pname, params);
1919 case GL_RENDERBUFFER_EXT:
1920 get_renderbuffer_parameteriv(ctx, name, pname, params);
1923 _mesa_error(ctx, GL_INVALID_ENUM,
1924 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1929 #endif /* FEATURE_APPLE_object_purgeable */