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*/
53 * Used as a placeholder for buffer objects between glGenBuffers() and
54 * glBindBuffer() so that glIsBuffer() can work correctly.
56 static struct gl_buffer_object DummyBufferObject;
60 * Return pointer to address of a buffer object target.
61 * \param ctx the GL context
62 * \param target the buffer object target to be retrieved.
63 * \return pointer to pointer to the buffer object bound to \c target in the
64 * specified context or \c NULL if \c target is invalid.
66 static inline struct gl_buffer_object **
67 get_buffer_target(struct gl_context *ctx, GLenum target)
70 case GL_ARRAY_BUFFER_ARB:
71 return &ctx->Array.ArrayBufferObj;
72 case GL_ELEMENT_ARRAY_BUFFER_ARB:
73 return &ctx->Array.ArrayObj->ElementArrayBufferObj;
74 case GL_PIXEL_PACK_BUFFER_EXT:
75 return &ctx->Pack.BufferObj;
76 case GL_PIXEL_UNPACK_BUFFER_EXT:
77 return &ctx->Unpack.BufferObj;
78 case GL_COPY_READ_BUFFER:
79 return &ctx->CopyReadBuffer;
80 case GL_COPY_WRITE_BUFFER:
81 return &ctx->CopyWriteBuffer;
82 #if FEATURE_EXT_transform_feedback
83 case GL_TRANSFORM_FEEDBACK_BUFFER:
84 if (ctx->Extensions.EXT_transform_feedback) {
85 return &ctx->TransformFeedback.CurrentBuffer;
89 case GL_TEXTURE_BUFFER:
90 if (ctx->Extensions.ARB_texture_buffer_object) {
91 return &ctx->Texture.BufferObject;
102 * Get the buffer object bound to the specified target in a GL context.
103 * \param ctx the GL context
104 * \param target the buffer object target to be retrieved.
105 * \return pointer to the buffer object bound to \c target in the
106 * specified context or \c NULL if \c target is invalid.
108 static inline struct gl_buffer_object *
109 get_buffer(struct gl_context *ctx, const char *func, GLenum target)
111 struct gl_buffer_object **bufObj = get_buffer_target(ctx, target);
114 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
118 if (!_mesa_is_bufferobj(*bufObj)) {
119 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(buffer 0)", func);
128 default_access_mode(const struct gl_context *ctx)
130 /* Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
132 * Name Type Initial Value Legal Values
134 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
137 * However, table 6.8 in the GL_OES_mapbuffer extension says:
139 * Get Value Type Get Command Value Description
140 * --------- ---- ----------- ----- -----------
141 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
143 * The difference is because GL_OES_mapbuffer only supports mapping buffers
146 return (ctx->API == API_OPENGLES)
147 ? GL_MAP_WRITE_BIT : (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT);
152 * Convert a GLbitfield describing the mapped buffer access flags
153 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
156 simplified_access_mode(GLbitfield access)
158 const GLbitfield rwFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
159 if ((access & rwFlags) == rwFlags)
160 return GL_READ_WRITE;
161 if ((access & GL_MAP_READ_BIT) == GL_MAP_READ_BIT)
163 if ((access & GL_MAP_WRITE_BIT) == GL_MAP_WRITE_BIT)
164 return GL_WRITE_ONLY;
165 return GL_READ_WRITE; /* this should never happen, but no big deal */
170 * Tests the subdata range parameters and sets the GL error code for
171 * \c glBufferSubDataARB and \c glGetBufferSubDataARB.
173 * \param ctx GL context.
174 * \param target Buffer object target on which to operate.
175 * \param offset Offset of the first byte of the subdata range.
176 * \param size Size, in bytes, of the subdata range.
177 * \param caller Name of calling function for recording errors.
178 * \return A pointer to the buffer object bound to \c target in the
179 * specified context or \c NULL if any of the parameter or state
180 * conditions for \c glBufferSubDataARB or \c glGetBufferSubDataARB
183 * \sa glBufferSubDataARB, glGetBufferSubDataARB
185 static struct gl_buffer_object *
186 buffer_object_subdata_range_good( struct gl_context * ctx, GLenum target,
187 GLintptrARB offset, GLsizeiptrARB size,
190 struct gl_buffer_object *bufObj;
193 _mesa_error(ctx, GL_INVALID_VALUE, "%s(size < 0)", caller);
198 _mesa_error(ctx, GL_INVALID_VALUE, "%s(offset < 0)", caller);
202 bufObj = get_buffer(ctx, caller, target);
206 if (offset + size > bufObj->Size) {
207 _mesa_error(ctx, GL_INVALID_VALUE,
208 "%s(offset %lu + size %lu > buffer size %lu)", caller,
209 (unsigned long) offset,
210 (unsigned long) size,
211 (unsigned long) bufObj->Size);
214 if (_mesa_bufferobj_mapped(bufObj)) {
215 /* Buffer is currently mapped */
216 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", caller);
225 * Allocate and initialize a new buffer object.
227 * Default callback for the \c dd_function_table::NewBufferObject() hook.
229 static struct gl_buffer_object *
230 _mesa_new_buffer_object( struct gl_context *ctx, GLuint name, GLenum target )
232 struct gl_buffer_object *obj;
236 obj = MALLOC_STRUCT(gl_buffer_object);
237 _mesa_initialize_buffer_object(ctx, obj, name, target);
243 * Delete a buffer object.
245 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
248 _mesa_delete_buffer_object(struct gl_context *ctx,
249 struct gl_buffer_object *bufObj)
256 /* assign strange values here to help w/ debugging */
257 bufObj->RefCount = -1000;
260 _glthread_DESTROY_MUTEX(bufObj->Mutex);
267 * Set ptr to bufObj w/ reference counting.
268 * This is normally only called from the _mesa_reference_buffer_object() macro
269 * when there's a real pointer change.
272 _mesa_reference_buffer_object_(struct gl_context *ctx,
273 struct gl_buffer_object **ptr,
274 struct gl_buffer_object *bufObj)
277 /* Unreference the old buffer */
278 GLboolean deleteFlag = GL_FALSE;
279 struct gl_buffer_object *oldObj = *ptr;
281 _glthread_LOCK_MUTEX(oldObj->Mutex);
282 ASSERT(oldObj->RefCount > 0);
285 printf("BufferObj %p %d DECR to %d\n",
286 (void *) oldObj, oldObj->Name, oldObj->RefCount);
288 deleteFlag = (oldObj->RefCount == 0);
289 _glthread_UNLOCK_MUTEX(oldObj->Mutex);
293 /* some sanity checking: don't delete a buffer still in use */
295 /* unfortunately, these tests are invalid during context tear-down */
296 ASSERT(ctx->Array.ArrayBufferObj != bufObj);
297 ASSERT(ctx->Array.ArrayObj->ElementArrayBufferObj != bufObj);
298 ASSERT(ctx->Array.ArrayObj->Vertex.BufferObj != bufObj);
301 ASSERT(ctx->Driver.DeleteBuffer);
302 ctx->Driver.DeleteBuffer(ctx, oldObj);
310 /* reference new buffer */
311 _glthread_LOCK_MUTEX(bufObj->Mutex);
312 if (bufObj->RefCount == 0) {
313 /* this buffer's being deleted (look just above) */
314 /* Not sure this can every really happen. Warn if it does. */
315 _mesa_problem(NULL, "referencing deleted buffer object");
321 printf("BufferObj %p %d INCR to %d\n",
322 (void *) bufObj, bufObj->Name, bufObj->RefCount);
326 _glthread_UNLOCK_MUTEX(bufObj->Mutex);
332 * Initialize a buffer object to default values.
335 _mesa_initialize_buffer_object( struct gl_context *ctx,
336 struct gl_buffer_object *obj,
337 GLuint name, GLenum target )
341 memset(obj, 0, sizeof(struct gl_buffer_object));
342 _glthread_INIT_MUTEX(obj->Mutex);
345 obj->Usage = GL_STATIC_DRAW_ARB;
346 obj->AccessFlags = default_access_mode(ctx);
351 * Allocate space for and store data in a buffer object. Any data that was
352 * previously stored in the buffer object is lost. If \c data is \c NULL,
353 * memory will be allocated, but no copy will occur.
355 * This is the default callback for \c dd_function_table::BufferData()
356 * Note that all GL error checking will have been done already.
358 * \param ctx GL context.
359 * \param target Buffer object target on which to operate.
360 * \param size Size, in bytes, of the new data store.
361 * \param data Pointer to the data to store in the buffer object. This
362 * pointer may be \c NULL.
363 * \param usage Hints about how the data will be used.
364 * \param bufObj Object to be used.
366 * \return GL_TRUE for success, GL_FALSE for failure
367 * \sa glBufferDataARB, dd_function_table::BufferData.
370 _mesa_buffer_data( struct gl_context *ctx, GLenum target, GLsizeiptrARB size,
371 const GLvoid * data, GLenum usage,
372 struct gl_buffer_object * bufObj )
376 (void) ctx; (void) target;
378 new_data = _mesa_realloc( bufObj->Data, bufObj->Size, size );
380 bufObj->Data = (GLubyte *) new_data;
382 bufObj->Usage = usage;
385 memcpy( bufObj->Data, data, size );
397 * Replace data in a subrange of buffer object. If the data range
398 * specified by \c size + \c offset extends beyond the end of the buffer or
399 * if \c data is \c NULL, no copy is performed.
401 * This is the default callback for \c dd_function_table::BufferSubData()
402 * Note that all GL error checking will have been done already.
404 * \param ctx GL context.
405 * \param target Buffer object target on which to operate.
406 * \param offset Offset of the first byte to be modified.
407 * \param size Size, in bytes, of the data range.
408 * \param data Pointer to the data to store in the buffer object.
409 * \param bufObj Object to be used.
411 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
414 _mesa_buffer_subdata( struct gl_context *ctx, GLintptrARB offset,
415 GLsizeiptrARB size, const GLvoid * data,
416 struct gl_buffer_object * bufObj )
420 /* this should have been caught in _mesa_BufferSubData() */
421 ASSERT(size + offset <= bufObj->Size);
424 memcpy( (GLubyte *) bufObj->Data + offset, data, size );
430 * Retrieve data from a subrange of buffer object. If the data range
431 * specified by \c size + \c offset extends beyond the end of the buffer or
432 * if \c data is \c NULL, no copy is performed.
434 * This is the default callback for \c dd_function_table::GetBufferSubData()
435 * Note that all GL error checking will have been done already.
437 * \param ctx GL context.
438 * \param target Buffer object target on which to operate.
439 * \param offset Offset of the first byte to be fetched.
440 * \param size Size, in bytes, of the data range.
441 * \param data Destination for data
442 * \param bufObj Object to be used.
444 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
447 _mesa_buffer_get_subdata( struct gl_context *ctx, GLintptrARB offset,
448 GLsizeiptrARB size, GLvoid * data,
449 struct gl_buffer_object * bufObj )
453 if (bufObj->Data && ((GLsizeiptrARB) (size + offset) <= bufObj->Size)) {
454 memcpy( data, (GLubyte *) bufObj->Data + offset, size );
460 * Default fallback for \c dd_function_table::MapBufferRange().
461 * Called via glMapBufferRange().
464 _mesa_buffer_map_range( struct gl_context *ctx, GLintptr offset,
465 GLsizeiptr length, GLbitfield access,
466 struct gl_buffer_object *bufObj )
469 assert(!_mesa_bufferobj_mapped(bufObj));
470 /* Just return a direct pointer to the data */
471 bufObj->Pointer = bufObj->Data + offset;
472 bufObj->Length = length;
473 bufObj->Offset = offset;
474 bufObj->AccessFlags = access;
475 return bufObj->Pointer;
480 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
481 * Called via glFlushMappedBufferRange().
484 _mesa_buffer_flush_mapped_range( struct gl_context *ctx,
485 GLintptr offset, GLsizeiptr length,
486 struct gl_buffer_object *obj )
497 * Default callback for \c dd_function_table::MapBuffer().
499 * The input parameters will have been already tested for errors.
501 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
504 _mesa_buffer_unmap( struct gl_context *ctx, struct gl_buffer_object *bufObj )
507 /* XXX we might assert here that bufObj->Pointer is non-null */
508 bufObj->Pointer = NULL;
511 bufObj->AccessFlags = 0x0;
517 * Default fallback for \c dd_function_table::CopyBufferSubData().
518 * Called via glCopyBuffserSubData().
521 _mesa_copy_buffer_subdata(struct gl_context *ctx,
522 struct gl_buffer_object *src,
523 struct gl_buffer_object *dst,
524 GLintptr readOffset, GLintptr writeOffset,
527 void *srcPtr, *dstPtr;
529 /* the buffers should not be mapped */
530 assert(!_mesa_bufferobj_mapped(src));
531 assert(!_mesa_bufferobj_mapped(dst));
534 srcPtr = dstPtr = ctx->Driver.MapBufferRange(ctx, 0, src->Size,
536 GL_MAP_WRITE_BIT, src);
541 srcPtr += readOffset;
542 dstPtr += writeOffset;
544 srcPtr = ctx->Driver.MapBufferRange(ctx, readOffset, size,
545 GL_MAP_READ_BIT, src);
546 dstPtr = ctx->Driver.MapBufferRange(ctx, writeOffset, size,
548 GL_MAP_INVALIDATE_RANGE_BIT), dst);
551 /* Note: the src and dst regions will never overlap. Trying to do so
552 * would generate GL_INVALID_VALUE earlier.
554 if (srcPtr && dstPtr)
555 memcpy(dstPtr, srcPtr, size);
557 ctx->Driver.UnmapBuffer(ctx, src);
559 ctx->Driver.UnmapBuffer(ctx, dst);
565 * Initialize the state associated with buffer objects
568 _mesa_init_buffer_objects( struct gl_context *ctx )
570 memset(&DummyBufferObject, 0, sizeof(DummyBufferObject));
571 _glthread_INIT_MUTEX(DummyBufferObject.Mutex);
572 DummyBufferObject.RefCount = 1000*1000*1000; /* never delete */
574 _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj,
575 ctx->Shared->NullBufferObj);
577 _mesa_reference_buffer_object(ctx, &ctx->CopyReadBuffer,
578 ctx->Shared->NullBufferObj);
579 _mesa_reference_buffer_object(ctx, &ctx->CopyWriteBuffer,
580 ctx->Shared->NullBufferObj);
585 _mesa_free_buffer_objects( struct gl_context *ctx )
587 _mesa_reference_buffer_object(ctx, &ctx->Array.ArrayBufferObj, 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 && !oldBufObj->DeletePending)
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->UnmapBuffer = _mesa_buffer_unmap;
718 /* GL_ARB_map_buffer_range */
719 driver->MapBufferRange = _mesa_buffer_map_range;
720 driver->FlushMappedBufferRange = _mesa_buffer_flush_mapped_range;
722 /* GL_ARB_copy_buffer */
723 driver->CopyBufferSubData = _mesa_copy_buffer_subdata;
728 /**********************************************************************/
730 /**********************************************************************/
733 _mesa_BindBufferARB(GLenum target, GLuint buffer)
735 GET_CURRENT_CONTEXT(ctx);
736 ASSERT_OUTSIDE_BEGIN_END(ctx);
738 if (MESA_VERBOSE & VERBOSE_API)
739 _mesa_debug(ctx, "glBindBuffer(%s, %u)\n",
740 _mesa_lookup_enum_by_nr(target), buffer);
742 bind_buffer_object(ctx, target, buffer);
747 * Delete a set of buffer objects.
749 * \param n Number of buffer objects to delete.
750 * \param ids Array of \c n buffer object IDs.
753 _mesa_DeleteBuffersARB(GLsizei n, const GLuint *ids)
755 GET_CURRENT_CONTEXT(ctx);
757 ASSERT_OUTSIDE_BEGIN_END(ctx);
758 FLUSH_VERTICES(ctx, 0);
761 _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteBuffersARB(n)");
765 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
767 for (i = 0; i < n; i++) {
768 struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, ids[i]);
770 struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
773 ASSERT(bufObj->Name == ids[i] || bufObj == &DummyBufferObject);
775 if (_mesa_bufferobj_mapped(bufObj)) {
776 /* if mapped, unmap it now */
777 ctx->Driver.UnmapBuffer(ctx, bufObj);
778 bufObj->AccessFlags = default_access_mode(ctx);
779 bufObj->Pointer = NULL;
782 /* unbind any vertex pointers bound to this buffer */
783 for (j = 0; j < Elements(arrayObj->VertexAttrib); j++) {
784 unbind(ctx, &arrayObj->VertexAttrib[j].BufferObj, bufObj);
787 if (ctx->Array.ArrayBufferObj == bufObj) {
788 _mesa_BindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
790 if (arrayObj->ElementArrayBufferObj == bufObj) {
791 _mesa_BindBufferARB( GL_ELEMENT_ARRAY_BUFFER_ARB, 0 );
794 /* unbind any pixel pack/unpack pointers bound to this buffer */
795 if (ctx->Pack.BufferObj == bufObj) {
796 _mesa_BindBufferARB( GL_PIXEL_PACK_BUFFER_EXT, 0 );
798 if (ctx->Unpack.BufferObj == bufObj) {
799 _mesa_BindBufferARB( GL_PIXEL_UNPACK_BUFFER_EXT, 0 );
802 /* The ID is immediately freed for re-use */
803 _mesa_HashRemove(ctx->Shared->BufferObjects, ids[i]);
804 /* Make sure we do not run into the classic ABA problem on bind.
805 * We don't want to allow re-binding a buffer object that's been
806 * "deleted" by glDeleteBuffers().
808 * The explicit rebinding to the default object in the current context
809 * prevents the above in the current context, but another context
810 * sharing the same objects might suffer from this problem.
811 * The alternative would be to do the hash lookup in any case on bind
812 * which would introduce more runtime overhead than this.
814 bufObj->DeletePending = GL_TRUE;
815 _mesa_reference_buffer_object(ctx, &bufObj, NULL);
819 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
824 * Generate a set of unique buffer object IDs and store them in \c buffer.
826 * \param n Number of IDs to generate.
827 * \param buffer Array of \c n locations to store the IDs.
830 _mesa_GenBuffersARB(GLsizei n, GLuint *buffer)
832 GET_CURRENT_CONTEXT(ctx);
835 ASSERT_OUTSIDE_BEGIN_END(ctx);
837 if (MESA_VERBOSE & VERBOSE_API)
838 _mesa_debug(ctx, "glGenBuffers(%d)\n", n);
841 _mesa_error(ctx, GL_INVALID_VALUE, "glGenBuffersARB");
850 * This must be atomic (generation and allocation of buffer object IDs)
852 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
854 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->BufferObjects, n);
856 /* Insert the ID and pointer to dummy buffer object into hash table */
857 for (i = 0; i < n; i++) {
858 _mesa_HashInsert(ctx->Shared->BufferObjects, first + i,
860 buffer[i] = first + i;
863 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
868 * Determine if ID is the name of a buffer object.
870 * \param id ID of the potential buffer object.
871 * \return \c GL_TRUE if \c id is the name of a buffer object,
872 * \c GL_FALSE otherwise.
875 _mesa_IsBufferARB(GLuint id)
877 struct gl_buffer_object *bufObj;
878 GET_CURRENT_CONTEXT(ctx);
879 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
881 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
882 bufObj = _mesa_lookup_bufferobj(ctx, id);
883 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
885 return bufObj && bufObj != &DummyBufferObject;
890 _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
891 const GLvoid * data, GLenum usage)
893 GET_CURRENT_CONTEXT(ctx);
894 struct gl_buffer_object *bufObj;
895 ASSERT_OUTSIDE_BEGIN_END(ctx);
897 if (MESA_VERBOSE & VERBOSE_API)
898 _mesa_debug(ctx, "glBufferData(%s, %ld, %p, %s)\n",
899 _mesa_lookup_enum_by_nr(target),
900 (long int) size, data,
901 _mesa_lookup_enum_by_nr(usage));
904 _mesa_error(ctx, GL_INVALID_VALUE, "glBufferDataARB(size < 0)");
909 case GL_STREAM_DRAW_ARB:
910 case GL_STREAM_READ_ARB:
911 case GL_STREAM_COPY_ARB:
912 case GL_STATIC_DRAW_ARB:
913 case GL_STATIC_READ_ARB:
914 case GL_STATIC_COPY_ARB:
915 case GL_DYNAMIC_DRAW_ARB:
916 case GL_DYNAMIC_READ_ARB:
917 case GL_DYNAMIC_COPY_ARB:
921 _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)");
925 bufObj = get_buffer(ctx, "glBufferDataARB", target);
929 if (_mesa_bufferobj_mapped(bufObj)) {
930 /* Unmap the existing buffer. We'll replace it now. Not an error. */
931 ctx->Driver.UnmapBuffer(ctx, bufObj);
932 bufObj->AccessFlags = default_access_mode(ctx);
933 ASSERT(bufObj->Pointer == NULL);
936 FLUSH_VERTICES(ctx, _NEW_BUFFER_OBJECT);
938 bufObj->Written = GL_TRUE;
941 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
942 bufObj->Name, size, data, usage);
949 ASSERT(ctx->Driver.BufferData);
950 if (!ctx->Driver.BufferData( ctx, target, size, data, usage, bufObj )) {
951 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBufferDataARB()");
957 _mesa_BufferSubDataARB(GLenum target, GLintptrARB offset,
958 GLsizeiptrARB size, const GLvoid * data)
960 GET_CURRENT_CONTEXT(ctx);
961 struct gl_buffer_object *bufObj;
962 ASSERT_OUTSIDE_BEGIN_END(ctx);
964 bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
965 "glBufferSubDataARB" );
967 /* error already recorded */
974 bufObj->Written = GL_TRUE;
976 ASSERT(ctx->Driver.BufferSubData);
977 ctx->Driver.BufferSubData( ctx, offset, size, data, bufObj );
982 _mesa_GetBufferSubDataARB(GLenum target, GLintptrARB offset,
983 GLsizeiptrARB size, void * data)
985 GET_CURRENT_CONTEXT(ctx);
986 struct gl_buffer_object *bufObj;
987 ASSERT_OUTSIDE_BEGIN_END(ctx);
989 bufObj = buffer_object_subdata_range_good( ctx, target, offset, size,
990 "glGetBufferSubDataARB" );
992 /* error already recorded */
996 ASSERT(ctx->Driver.GetBufferSubData);
997 ctx->Driver.GetBufferSubData( ctx, offset, size, data, bufObj );
1002 _mesa_MapBufferARB(GLenum target, GLenum access)
1004 GET_CURRENT_CONTEXT(ctx);
1005 struct gl_buffer_object * bufObj;
1006 GLbitfield accessFlags;
1009 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
1012 case GL_READ_ONLY_ARB:
1013 accessFlags = GL_MAP_READ_BIT;
1015 case GL_WRITE_ONLY_ARB:
1016 accessFlags = GL_MAP_WRITE_BIT;
1018 case GL_READ_WRITE_ARB:
1019 accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
1022 _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)");
1026 bufObj = get_buffer(ctx, "glMapBufferARB", target);
1030 if (_mesa_bufferobj_mapped(bufObj)) {
1031 _mesa_error(ctx, GL_INVALID_OPERATION, "glMapBufferARB(already mapped)");
1035 if (!bufObj->Size) {
1036 _mesa_error(ctx, GL_OUT_OF_MEMORY,
1037 "glMapBuffer(buffer size = 0)");
1041 ASSERT(ctx->Driver.MapBufferRange);
1042 map = ctx->Driver.MapBufferRange(ctx, 0, bufObj->Size, accessFlags, bufObj);
1044 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
1048 /* The driver callback should have set these fields.
1049 * This is important because other modules (like VBO) might call
1050 * the driver function directly.
1052 ASSERT(bufObj->Pointer == map);
1053 ASSERT(bufObj->Length == bufObj->Size);
1054 ASSERT(bufObj->Offset == 0);
1055 bufObj->AccessFlags = accessFlags;
1058 if (access == GL_WRITE_ONLY_ARB || access == GL_READ_WRITE_ARB)
1059 bufObj->Written = GL_TRUE;
1062 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1063 bufObj->Name, bufObj->Size, access);
1064 if (access == GL_WRITE_ONLY_ARB) {
1066 GLubyte *b = (GLubyte *) bufObj->Pointer;
1067 for (i = 0; i < bufObj->Size; i++)
1074 GLubyte *buf = (GLubyte *) bufObj->Pointer;
1076 /* buffer is 100 bytes larger than requested, fill with magic value */
1077 for (i = 0; i < 100; i++) {
1078 buf[bufObj->Size - i - 1] = 123;
1083 return bufObj->Pointer;
1087 GLboolean GLAPIENTRY
1088 _mesa_UnmapBufferARB(GLenum target)
1090 GET_CURRENT_CONTEXT(ctx);
1091 struct gl_buffer_object *bufObj;
1092 GLboolean status = GL_TRUE;
1093 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1095 bufObj = get_buffer(ctx, "glUnmapBufferARB", target);
1099 if (!_mesa_bufferobj_mapped(bufObj)) {
1100 _mesa_error(ctx, GL_INVALID_OPERATION, "glUnmapBufferARB");
1105 if (bufObj->Access != GL_READ_ONLY_ARB) {
1106 GLubyte *buf = (GLubyte *) bufObj->Pointer;
1108 /* check that last 100 bytes are still = magic value */
1109 for (i = 0; i < 100; i++) {
1110 GLuint pos = bufObj->Size - i - 1;
1111 if (buf[pos] != 123) {
1112 _mesa_warning(ctx, "Out of bounds buffer object write detected"
1113 " at position %d (value = %u)\n",
1121 if (bufObj->AccessFlags & GL_MAP_WRITE_BIT) {
1122 GLuint i, unchanged = 0;
1123 GLubyte *b = (GLubyte *) bufObj->Pointer;
1125 /* check which bytes changed */
1126 for (i = 0; i < bufObj->Size - 1; i++) {
1127 if (b[i] == (i & 0xff) && b[i+1] == ((i+1) & 0xff)) {
1134 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1135 bufObj->Name, unchanged, bufObj->Size, pos);
1140 status = ctx->Driver.UnmapBuffer( ctx, bufObj );
1141 bufObj->AccessFlags = default_access_mode(ctx);
1142 ASSERT(bufObj->Pointer == NULL);
1143 ASSERT(bufObj->Offset == 0);
1144 ASSERT(bufObj->Length == 0);
1151 _mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params)
1153 GET_CURRENT_CONTEXT(ctx);
1154 struct gl_buffer_object *bufObj;
1155 ASSERT_OUTSIDE_BEGIN_END(ctx);
1157 bufObj = get_buffer(ctx, "glGetBufferParameterivARB", target);
1162 case GL_BUFFER_SIZE_ARB:
1163 *params = (GLint) bufObj->Size;
1165 case GL_BUFFER_USAGE_ARB:
1166 *params = bufObj->Usage;
1168 case GL_BUFFER_ACCESS_ARB:
1169 *params = simplified_access_mode(bufObj->AccessFlags);
1171 case GL_BUFFER_MAPPED_ARB:
1172 *params = _mesa_bufferobj_mapped(bufObj);
1174 case GL_BUFFER_ACCESS_FLAGS:
1175 if (!ctx->Extensions.ARB_map_buffer_range)
1177 *params = bufObj->AccessFlags;
1179 case GL_BUFFER_MAP_OFFSET:
1180 if (!ctx->Extensions.ARB_map_buffer_range)
1182 *params = (GLint) bufObj->Offset;
1184 case GL_BUFFER_MAP_LENGTH:
1185 if (!ctx->Extensions.ARB_map_buffer_range)
1187 *params = (GLint) bufObj->Length;
1190 ; /* fall-through */
1194 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname=%s)",
1195 _mesa_lookup_enum_by_nr(pname));
1201 * This is pretty much a duplicate of GetBufferParameteriv() but the
1202 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1205 _mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params)
1207 GET_CURRENT_CONTEXT(ctx);
1208 struct gl_buffer_object *bufObj;
1209 ASSERT_OUTSIDE_BEGIN_END(ctx);
1211 bufObj = get_buffer(ctx, "glGetBufferParameteri64v", target);
1216 case GL_BUFFER_SIZE_ARB:
1217 *params = bufObj->Size;
1219 case GL_BUFFER_USAGE_ARB:
1220 *params = bufObj->Usage;
1222 case GL_BUFFER_ACCESS_ARB:
1223 *params = simplified_access_mode(bufObj->AccessFlags);
1225 case GL_BUFFER_ACCESS_FLAGS:
1226 if (!ctx->Extensions.ARB_map_buffer_range)
1228 *params = bufObj->AccessFlags;
1230 case GL_BUFFER_MAPPED_ARB:
1231 *params = _mesa_bufferobj_mapped(bufObj);
1233 case GL_BUFFER_MAP_OFFSET:
1234 if (!ctx->Extensions.ARB_map_buffer_range)
1236 *params = bufObj->Offset;
1238 case GL_BUFFER_MAP_LENGTH:
1239 if (!ctx->Extensions.ARB_map_buffer_range)
1241 *params = bufObj->Length;
1244 ; /* fall-through */
1248 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname=%s)",
1249 _mesa_lookup_enum_by_nr(pname));
1254 _mesa_GetBufferPointervARB(GLenum target, GLenum pname, GLvoid **params)
1256 GET_CURRENT_CONTEXT(ctx);
1257 struct gl_buffer_object * bufObj;
1258 ASSERT_OUTSIDE_BEGIN_END(ctx);
1260 if (pname != GL_BUFFER_MAP_POINTER_ARB) {
1261 _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferPointervARB(pname)");
1265 bufObj = get_buffer(ctx, "glGetBufferPointervARB", target);
1269 *params = bufObj->Pointer;
1274 _mesa_CopyBufferSubData(GLenum readTarget, GLenum writeTarget,
1275 GLintptr readOffset, GLintptr writeOffset,
1278 GET_CURRENT_CONTEXT(ctx);
1279 struct gl_buffer_object *src, *dst;
1280 ASSERT_OUTSIDE_BEGIN_END(ctx);
1282 src = get_buffer(ctx, "glCopyBuffserSubData", readTarget);
1286 dst = get_buffer(ctx, "glCopyBuffserSubData", writeTarget);
1290 if (_mesa_bufferobj_mapped(src)) {
1291 _mesa_error(ctx, GL_INVALID_OPERATION,
1292 "glCopyBuffserSubData(readBuffer is mapped)");
1296 if (_mesa_bufferobj_mapped(dst)) {
1297 _mesa_error(ctx, GL_INVALID_OPERATION,
1298 "glCopyBuffserSubData(writeBuffer is mapped)");
1302 if (readOffset < 0) {
1303 _mesa_error(ctx, GL_INVALID_VALUE,
1304 "glCopyBuffserSubData(readOffset = %d)", (int) readOffset);
1308 if (writeOffset < 0) {
1309 _mesa_error(ctx, GL_INVALID_VALUE,
1310 "glCopyBuffserSubData(writeOffset = %d)", (int) writeOffset);
1314 if (readOffset + size > src->Size) {
1315 _mesa_error(ctx, GL_INVALID_VALUE,
1316 "glCopyBuffserSubData(readOffset + size = %d)",
1317 (int) (readOffset + size));
1321 if (writeOffset + size > dst->Size) {
1322 _mesa_error(ctx, GL_INVALID_VALUE,
1323 "glCopyBuffserSubData(writeOffset + size = %d)",
1324 (int) (writeOffset + size));
1329 if (readOffset + size <= writeOffset) {
1332 else if (writeOffset + size <= readOffset) {
1336 /* overlapping src/dst is illegal */
1337 _mesa_error(ctx, GL_INVALID_VALUE,
1338 "glCopyBuffserSubData(overlapping src/dst)");
1343 ctx->Driver.CopyBufferSubData(ctx, src, dst, readOffset, writeOffset, size);
1348 * See GL_ARB_map_buffer_range spec
1351 _mesa_MapBufferRange(GLenum target, GLintptr offset, GLsizeiptr length,
1354 GET_CURRENT_CONTEXT(ctx);
1355 struct gl_buffer_object *bufObj;
1358 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
1360 if (!ctx->Extensions.ARB_map_buffer_range) {
1361 _mesa_error(ctx, GL_INVALID_OPERATION,
1362 "glMapBufferRange(extension not supported)");
1367 _mesa_error(ctx, GL_INVALID_VALUE,
1368 "glMapBufferRange(offset = %ld)", (long)offset);
1373 _mesa_error(ctx, GL_INVALID_VALUE,
1374 "glMapBufferRange(length = %ld)", (long)length);
1378 if (access & ~(GL_MAP_READ_BIT |
1380 GL_MAP_INVALIDATE_RANGE_BIT |
1381 GL_MAP_INVALIDATE_BUFFER_BIT |
1382 GL_MAP_FLUSH_EXPLICIT_BIT |
1383 GL_MAP_UNSYNCHRONIZED_BIT)) {
1384 /* generate an error if any undefind bit is set */
1385 _mesa_error(ctx, GL_INVALID_VALUE, "glMapBufferRange(access)");
1389 if ((access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == 0) {
1390 _mesa_error(ctx, GL_INVALID_OPERATION,
1391 "glMapBufferRange(access indicates neither read or write)");
1395 if ((access & GL_MAP_READ_BIT) &&
1396 (access & (GL_MAP_INVALIDATE_RANGE_BIT |
1397 GL_MAP_INVALIDATE_BUFFER_BIT |
1398 GL_MAP_UNSYNCHRONIZED_BIT))) {
1399 _mesa_error(ctx, GL_INVALID_OPERATION,
1400 "glMapBufferRange(invalid access flags)");
1404 if ((access & GL_MAP_FLUSH_EXPLICIT_BIT) &&
1405 ((access & GL_MAP_WRITE_BIT) == 0)) {
1406 _mesa_error(ctx, GL_INVALID_OPERATION,
1407 "glMapBufferRange(invalid access flags)");
1411 bufObj = get_buffer(ctx, "glMapBufferRange", target);
1415 if (offset + length > bufObj->Size) {
1416 _mesa_error(ctx, GL_INVALID_VALUE,
1417 "glMapBufferRange(offset + length > size)");
1421 if (_mesa_bufferobj_mapped(bufObj)) {
1422 _mesa_error(ctx, GL_INVALID_OPERATION,
1423 "glMapBufferRange(buffer already mapped)");
1427 if (!bufObj->Size) {
1428 _mesa_error(ctx, GL_OUT_OF_MEMORY,
1429 "glMapBufferRange(buffer size = 0)");
1433 /* Mapping zero bytes should return a non-null pointer. */
1435 static long dummy = 0;
1436 bufObj->Pointer = &dummy;
1437 bufObj->Length = length;
1438 bufObj->Offset = offset;
1439 bufObj->AccessFlags = access;
1440 return bufObj->Pointer;
1443 ASSERT(ctx->Driver.MapBufferRange);
1444 map = ctx->Driver.MapBufferRange(ctx, offset, length, access, bufObj);
1446 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMapBufferARB(map failed)");
1449 /* The driver callback should have set all these fields.
1450 * This is important because other modules (like VBO) might call
1451 * the driver function directly.
1453 ASSERT(bufObj->Pointer == map);
1454 ASSERT(bufObj->Length == length);
1455 ASSERT(bufObj->Offset == offset);
1456 ASSERT(bufObj->AccessFlags == access);
1464 * See GL_ARB_map_buffer_range spec
1467 _mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length)
1469 GET_CURRENT_CONTEXT(ctx);
1470 struct gl_buffer_object *bufObj;
1471 ASSERT_OUTSIDE_BEGIN_END(ctx);
1473 if (!ctx->Extensions.ARB_map_buffer_range) {
1474 _mesa_error(ctx, GL_INVALID_OPERATION,
1475 "glFlushMappedBufferRange(extension not supported)");
1480 _mesa_error(ctx, GL_INVALID_VALUE,
1481 "glFlushMappedBufferRange(offset = %ld)", (long)offset);
1486 _mesa_error(ctx, GL_INVALID_VALUE,
1487 "glFlushMappedBufferRange(length = %ld)", (long)length);
1491 bufObj = get_buffer(ctx, "glFlushMappedBufferRange", target);
1495 if (!_mesa_bufferobj_mapped(bufObj)) {
1496 /* buffer is not mapped */
1497 _mesa_error(ctx, GL_INVALID_OPERATION,
1498 "glFlushMappedBufferRange(buffer is not mapped)");
1502 if ((bufObj->AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT) == 0) {
1503 _mesa_error(ctx, GL_INVALID_OPERATION,
1504 "glFlushMappedBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
1508 if (offset + length > bufObj->Length) {
1509 _mesa_error(ctx, GL_INVALID_VALUE,
1510 "glFlushMappedBufferRange(offset %ld + length %ld > mapped length %ld)",
1511 (long)offset, (long)length, (long)bufObj->Length);
1515 ASSERT(bufObj->AccessFlags & GL_MAP_WRITE_BIT);
1517 if (ctx->Driver.FlushMappedBufferRange)
1518 ctx->Driver.FlushMappedBufferRange(ctx, offset, length, bufObj);
1522 #if FEATURE_APPLE_object_purgeable
1524 buffer_object_purgeable(struct gl_context *ctx, GLuint name, GLenum option)
1526 struct gl_buffer_object *bufObj;
1529 bufObj = _mesa_lookup_bufferobj(ctx, name);
1531 _mesa_error(ctx, GL_INVALID_VALUE,
1532 "glObjectPurgeable(name = 0x%x)", name);
1535 if (!_mesa_is_bufferobj(bufObj)) {
1536 _mesa_error(ctx, GL_INVALID_OPERATION, "glObjectPurgeable(buffer 0)" );
1540 if (bufObj->Purgeable) {
1541 _mesa_error(ctx, GL_INVALID_OPERATION,
1542 "glObjectPurgeable(name = 0x%x) is already purgeable", name);
1543 return GL_VOLATILE_APPLE;
1546 bufObj->Purgeable = GL_TRUE;
1548 retval = GL_VOLATILE_APPLE;
1549 if (ctx->Driver.BufferObjectPurgeable)
1550 retval = ctx->Driver.BufferObjectPurgeable(ctx, bufObj, option);
1557 renderbuffer_purgeable(struct gl_context *ctx, GLuint name, GLenum option)
1559 struct gl_renderbuffer *bufObj;
1562 bufObj = _mesa_lookup_renderbuffer(ctx, name);
1564 _mesa_error(ctx, GL_INVALID_VALUE,
1565 "glObjectUnpurgeable(name = 0x%x)", name);
1569 if (bufObj->Purgeable) {
1570 _mesa_error(ctx, GL_INVALID_OPERATION,
1571 "glObjectPurgeable(name = 0x%x) is already purgeable", name);
1572 return GL_VOLATILE_APPLE;
1575 bufObj->Purgeable = GL_TRUE;
1577 retval = GL_VOLATILE_APPLE;
1578 if (ctx->Driver.RenderObjectPurgeable)
1579 retval = ctx->Driver.RenderObjectPurgeable(ctx, bufObj, option);
1586 texture_object_purgeable(struct gl_context *ctx, GLuint name, GLenum option)
1588 struct gl_texture_object *bufObj;
1591 bufObj = _mesa_lookup_texture(ctx, name);
1593 _mesa_error(ctx, GL_INVALID_VALUE,
1594 "glObjectPurgeable(name = 0x%x)", name);
1598 if (bufObj->Purgeable) {
1599 _mesa_error(ctx, GL_INVALID_OPERATION,
1600 "glObjectPurgeable(name = 0x%x) is already purgeable", name);
1601 return GL_VOLATILE_APPLE;
1604 bufObj->Purgeable = GL_TRUE;
1606 retval = GL_VOLATILE_APPLE;
1607 if (ctx->Driver.TextureObjectPurgeable)
1608 retval = ctx->Driver.TextureObjectPurgeable(ctx, bufObj, option);
1615 _mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
1619 GET_CURRENT_CONTEXT(ctx);
1620 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1623 _mesa_error(ctx, GL_INVALID_VALUE,
1624 "glObjectPurgeable(name = 0x%x)", name);
1629 case GL_VOLATILE_APPLE:
1630 case GL_RELEASED_APPLE:
1634 _mesa_error(ctx, GL_INVALID_ENUM,
1635 "glObjectPurgeable(name = 0x%x) invalid option: %d",
1640 switch (objectType) {
1642 retval = texture_object_purgeable(ctx, name, option);
1644 case GL_RENDERBUFFER_EXT:
1645 retval = renderbuffer_purgeable(ctx, name, option);
1647 case GL_BUFFER_OBJECT_APPLE:
1648 retval = buffer_object_purgeable(ctx, name, option);
1651 _mesa_error(ctx, GL_INVALID_ENUM,
1652 "glObjectPurgeable(name = 0x%x) invalid type: %d",
1657 /* In strict conformance to the spec, we must only return VOLATILE when
1658 * when passed the VOLATILE option. Madness.
1660 * XXX First fix the spec, then fix me.
1662 return option == GL_VOLATILE_APPLE ? GL_VOLATILE_APPLE : retval;
1667 buffer_object_unpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
1669 struct gl_buffer_object *bufObj;
1672 bufObj = _mesa_lookup_bufferobj(ctx, name);
1674 _mesa_error(ctx, GL_INVALID_VALUE,
1675 "glObjectUnpurgeable(name = 0x%x)", name);
1679 if (! bufObj->Purgeable) {
1680 _mesa_error(ctx, GL_INVALID_OPERATION,
1681 "glObjectUnpurgeable(name = 0x%x) object is "
1682 " already \"unpurged\"", name);
1686 bufObj->Purgeable = GL_FALSE;
1689 if (ctx->Driver.BufferObjectUnpurgeable)
1690 retval = ctx->Driver.BufferObjectUnpurgeable(ctx, bufObj, option);
1697 renderbuffer_unpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
1699 struct gl_renderbuffer *bufObj;
1702 bufObj = _mesa_lookup_renderbuffer(ctx, name);
1704 _mesa_error(ctx, GL_INVALID_VALUE,
1705 "glObjectUnpurgeable(name = 0x%x)", name);
1709 if (! bufObj->Purgeable) {
1710 _mesa_error(ctx, GL_INVALID_OPERATION,
1711 "glObjectUnpurgeable(name = 0x%x) object is "
1712 " already \"unpurged\"", name);
1716 bufObj->Purgeable = GL_FALSE;
1719 if (ctx->Driver.RenderObjectUnpurgeable)
1720 retval = ctx->Driver.RenderObjectUnpurgeable(ctx, bufObj, option);
1727 texture_object_unpurgeable(struct gl_context *ctx, GLuint name, GLenum option)
1729 struct gl_texture_object *bufObj;
1732 bufObj = _mesa_lookup_texture(ctx, name);
1734 _mesa_error(ctx, GL_INVALID_VALUE,
1735 "glObjectUnpurgeable(name = 0x%x)", name);
1739 if (! bufObj->Purgeable) {
1740 _mesa_error(ctx, GL_INVALID_OPERATION,
1741 "glObjectUnpurgeable(name = 0x%x) object is"
1742 " already \"unpurged\"", name);
1746 bufObj->Purgeable = GL_FALSE;
1749 if (ctx->Driver.TextureObjectUnpurgeable)
1750 retval = ctx->Driver.TextureObjectUnpurgeable(ctx, bufObj, option);
1757 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
1759 GET_CURRENT_CONTEXT(ctx);
1760 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1763 _mesa_error(ctx, GL_INVALID_VALUE,
1764 "glObjectUnpurgeable(name = 0x%x)", name);
1769 case GL_RETAINED_APPLE:
1770 case GL_UNDEFINED_APPLE:
1774 _mesa_error(ctx, GL_INVALID_ENUM,
1775 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
1780 switch (objectType) {
1781 case GL_BUFFER_OBJECT_APPLE:
1782 return buffer_object_unpurgeable(ctx, name, option);
1784 return texture_object_unpurgeable(ctx, name, option);
1785 case GL_RENDERBUFFER_EXT:
1786 return renderbuffer_unpurgeable(ctx, name, option);
1788 _mesa_error(ctx, GL_INVALID_ENUM,
1789 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
1797 get_buffer_object_parameteriv(struct gl_context *ctx, GLuint name,
1798 GLenum pname, GLint *params)
1800 struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, name);
1802 _mesa_error(ctx, GL_INVALID_VALUE,
1803 "glGetObjectParameteriv(name = 0x%x) invalid object", name);
1808 case GL_PURGEABLE_APPLE:
1809 *params = bufObj->Purgeable;
1812 _mesa_error(ctx, GL_INVALID_ENUM,
1813 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1821 get_renderbuffer_parameteriv(struct gl_context *ctx, GLuint name,
1822 GLenum pname, GLint *params)
1824 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
1826 _mesa_error(ctx, GL_INVALID_VALUE,
1827 "glObjectUnpurgeable(name = 0x%x)", name);
1832 case GL_PURGEABLE_APPLE:
1833 *params = rb->Purgeable;
1836 _mesa_error(ctx, GL_INVALID_ENUM,
1837 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1845 get_texture_object_parameteriv(struct gl_context *ctx, GLuint name,
1846 GLenum pname, GLint *params)
1848 struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
1850 _mesa_error(ctx, GL_INVALID_VALUE,
1851 "glObjectUnpurgeable(name = 0x%x)", name);
1856 case GL_PURGEABLE_APPLE:
1857 *params = texObj->Purgeable;
1860 _mesa_error(ctx, GL_INVALID_ENUM,
1861 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
1869 _mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname,
1872 GET_CURRENT_CONTEXT(ctx);
1875 _mesa_error(ctx, GL_INVALID_VALUE,
1876 "glGetObjectParameteriv(name = 0x%x)", name);
1880 switch (objectType) {
1882 get_texture_object_parameteriv(ctx, name, pname, params);
1884 case GL_BUFFER_OBJECT_APPLE:
1885 get_buffer_object_parameteriv(ctx, name, pname, params);
1887 case GL_RENDERBUFFER_EXT:
1888 get_renderbuffer_parameteriv(ctx, name, pname, params);
1891 _mesa_error(ctx, GL_INVALID_ENUM,
1892 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
1897 #endif /* FEATURE_APPLE_object_purgeable */