2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * 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"
45 #include "glformats.h"
47 #include "transformfeedback.h"
53 /*#define BOUNDS_CHECK*/
57 * Used as a placeholder for buffer objects between glGenBuffers() and
58 * glBindBuffer() so that glIsBuffer() can work correctly.
60 static struct gl_buffer_object DummyBufferObject
;
64 * Return pointer to address of a buffer object target.
65 * \param ctx the GL context
66 * \param target the buffer object target to be retrieved.
67 * \return pointer to pointer to the buffer object bound to \c target in the
68 * specified context or \c NULL if \c target is invalid.
70 static inline struct gl_buffer_object
**
71 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
73 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
75 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
76 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
80 case GL_ARRAY_BUFFER_ARB
:
81 return &ctx
->Array
.ArrayBufferObj
;
82 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
83 return &ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
84 case GL_PIXEL_PACK_BUFFER_EXT
:
85 return &ctx
->Pack
.BufferObj
;
86 case GL_PIXEL_UNPACK_BUFFER_EXT
:
87 return &ctx
->Unpack
.BufferObj
;
88 case GL_COPY_READ_BUFFER
:
89 return &ctx
->CopyReadBuffer
;
90 case GL_COPY_WRITE_BUFFER
:
91 return &ctx
->CopyWriteBuffer
;
92 case GL_DRAW_INDIRECT_BUFFER
:
93 if (ctx
->API
== API_OPENGL_CORE
&&
94 ctx
->Extensions
.ARB_draw_indirect
) {
95 return &ctx
->DrawIndirectBuffer
;
98 case GL_TRANSFORM_FEEDBACK_BUFFER
:
99 if (ctx
->Extensions
.EXT_transform_feedback
) {
100 return &ctx
->TransformFeedback
.CurrentBuffer
;
103 case GL_TEXTURE_BUFFER
:
104 if (ctx
->API
== API_OPENGL_CORE
&&
105 ctx
->Extensions
.ARB_texture_buffer_object
) {
106 return &ctx
->Texture
.BufferObject
;
109 case GL_UNIFORM_BUFFER
:
110 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
111 return &ctx
->UniformBuffer
;
114 case GL_ATOMIC_COUNTER_BUFFER
:
115 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
116 return &ctx
->AtomicBuffer
;
127 * Get the buffer object bound to the specified target in a GL context.
128 * \param ctx the GL context
129 * \param target the buffer object target to be retrieved.
130 * \param error the GL error to record if target is illegal.
131 * \return pointer to the buffer object bound to \c target in the
132 * specified context or \c NULL if \c target is invalid.
134 static inline struct gl_buffer_object
*
135 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
138 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
141 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
145 if (!_mesa_is_bufferobj(*bufObj
)) {
146 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
155 * Convert a GLbitfield describing the mapped buffer access flags
156 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
159 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
161 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
162 if ((access
& rwFlags
) == rwFlags
)
163 return GL_READ_WRITE
;
164 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
166 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
167 return GL_WRITE_ONLY
;
169 /* Otherwise, AccessFlags is zero (the default state).
171 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
173 * Name Type Initial Value Legal Values
175 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
178 * However, table 6.8 in the GL_OES_mapbuffer extension says:
180 * Get Value Type Get Command Value Description
181 * --------- ---- ----------- ----- -----------
182 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
184 * The difference is because GL_OES_mapbuffer only supports mapping buffers
189 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
194 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
196 * The regions do not overlap if and only if the end of the given
197 * region is before the mapped region or the start of the given region
198 * is after the mapped region.
200 * \param obj Buffer object target on which to operate.
201 * \param offset Offset of the first byte of the subdata range.
202 * \param size Size, in bytes, of the subdata range.
203 * \return true if ranges overlap, false otherwise
207 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
208 GLintptr offset
, GLsizeiptr size
)
210 if (_mesa_bufferobj_mapped(obj
)) {
211 const GLintptr end
= offset
+ size
;
212 const GLintptr mapEnd
= obj
->Offset
+ obj
->Length
;
214 if (!(end
<= obj
->Offset
|| offset
>= mapEnd
)) {
223 * Tests the subdata range parameters and sets the GL error code for
224 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
225 * \c glClearBufferSubData.
227 * \param ctx GL context.
228 * \param target Buffer object target on which to operate.
229 * \param offset Offset of the first byte of the subdata range.
230 * \param size Size, in bytes, of the subdata range.
231 * \param mappedRange If true, checks if an overlapping range is mapped.
232 * If false, checks if buffer is mapped.
233 * \param errorNoBuffer Error code if no buffer is bound to target.
234 * \param caller Name of calling function for recording errors.
235 * \return A pointer to the buffer object bound to \c target in the
236 * specified context or \c NULL if any of the parameter or state
237 * conditions are invalid.
239 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
241 static struct gl_buffer_object
*
242 buffer_object_subdata_range_good(struct gl_context
* ctx
, GLenum target
,
243 GLintptrARB offset
, GLsizeiptrARB size
,
244 bool mappedRange
, GLenum errorNoBuffer
,
247 struct gl_buffer_object
*bufObj
;
250 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
255 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
259 bufObj
= get_buffer(ctx
, caller
, target
, errorNoBuffer
);
263 if (offset
+ size
> bufObj
->Size
) {
264 _mesa_error(ctx
, GL_INVALID_VALUE
,
265 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
266 (unsigned long) offset
,
267 (unsigned long) size
,
268 (unsigned long) bufObj
->Size
);
273 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
274 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
279 if (_mesa_bufferobj_mapped(bufObj
)) {
280 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", caller
);
290 * Test the format and type parameters and set the GL error code for
291 * \c glClearBufferData and \c glClearBufferSubData.
293 * \param ctx GL context.
294 * \param internalformat Format to which the data is to be converted.
295 * \param format Format of the supplied data.
296 * \param type Type of the supplied data.
297 * \param caller Name of calling function for recording errors.
298 * \return If internalformat, format and type are legal the gl_format
299 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
301 * \sa glClearBufferData and glClearBufferSubData
304 validate_clear_buffer_format(struct gl_context
*ctx
,
305 GLenum internalformat
,
306 GLenum format
, GLenum type
,
309 gl_format mesaFormat
;
310 GLenum errorFormatType
;
312 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
313 if (mesaFormat
== MESA_FORMAT_NONE
) {
314 _mesa_error(ctx
, GL_INVALID_ENUM
,
315 "%s(invalid internalformat)", caller
);
316 return MESA_FORMAT_NONE
;
319 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
320 * EXT_texture_integer there is no conversion between integer and
321 * non-integer formats
323 if (_mesa_is_enum_format_signed_int(format
) !=
324 _mesa_is_format_integer_color(mesaFormat
)) {
325 _mesa_error(ctx
, GL_INVALID_OPERATION
,
326 "%s(integer vs non-integer)", caller
);
327 return MESA_FORMAT_NONE
;
330 if (!_mesa_is_color_format(format
)) {
331 _mesa_error(ctx
, GL_INVALID_ENUM
,
332 "%s(format is not a color format)", caller
);
333 return MESA_FORMAT_NONE
;
336 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
337 if (errorFormatType
!= GL_NO_ERROR
) {
338 _mesa_error(ctx
, GL_INVALID_ENUM
,
339 "%s(invalid format or type)", caller
);
340 return MESA_FORMAT_NONE
;
348 * Convert user-specified clear value to the specified internal format.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is converted.
352 * \param clearValue Points to the converted clear value.
353 * \param format Format of the supplied data.
354 * \param type Type of the supplied data.
355 * \param data Data which is to be converted to internalformat.
356 * \param caller Name of calling function for recording errors.
357 * \return true if data could be converted, false otherwise.
359 * \sa glClearBufferData, glClearBufferSubData
362 convert_clear_buffer_data(struct gl_context
*ctx
,
363 gl_format internalformat
,
364 GLubyte
*clearValue
, GLenum format
, GLenum type
,
365 const GLvoid
*data
, const char *caller
)
367 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
369 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
370 0, &clearValue
, 1, 1, 1,
371 format
, type
, data
, &ctx
->Unpack
)) {
375 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
382 * Allocate and initialize a new buffer object.
384 * Default callback for the \c dd_function_table::NewBufferObject() hook.
386 static struct gl_buffer_object
*
387 _mesa_new_buffer_object( struct gl_context
*ctx
, GLuint name
, GLenum target
)
389 struct gl_buffer_object
*obj
;
393 obj
= MALLOC_STRUCT(gl_buffer_object
);
394 _mesa_initialize_buffer_object(ctx
, obj
, name
, target
);
400 * Delete a buffer object.
402 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
405 _mesa_delete_buffer_object(struct gl_context
*ctx
,
406 struct gl_buffer_object
*bufObj
)
412 /* assign strange values here to help w/ debugging */
413 bufObj
->RefCount
= -1000;
416 _glthread_DESTROY_MUTEX(bufObj
->Mutex
);
424 * Set ptr to bufObj w/ reference counting.
425 * This is normally only called from the _mesa_reference_buffer_object() macro
426 * when there's a real pointer change.
429 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
430 struct gl_buffer_object
**ptr
,
431 struct gl_buffer_object
*bufObj
)
434 /* Unreference the old buffer */
435 GLboolean deleteFlag
= GL_FALSE
;
436 struct gl_buffer_object
*oldObj
= *ptr
;
438 _glthread_LOCK_MUTEX(oldObj
->Mutex
);
439 ASSERT(oldObj
->RefCount
> 0);
442 printf("BufferObj %p %d DECR to %d\n",
443 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
445 deleteFlag
= (oldObj
->RefCount
== 0);
446 _glthread_UNLOCK_MUTEX(oldObj
->Mutex
);
450 /* some sanity checking: don't delete a buffer still in use */
452 /* unfortunately, these tests are invalid during context tear-down */
453 ASSERT(ctx
->Array
.ArrayBufferObj
!= bufObj
);
454 ASSERT(ctx
->Array
.ArrayObj
->ElementArrayBufferObj
!= bufObj
);
455 ASSERT(ctx
->Array
.ArrayObj
->Vertex
.BufferObj
!= bufObj
);
458 ASSERT(ctx
->Driver
.DeleteBuffer
);
459 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
467 /* reference new buffer */
468 _glthread_LOCK_MUTEX(bufObj
->Mutex
);
469 if (bufObj
->RefCount
== 0) {
470 /* this buffer's being deleted (look just above) */
471 /* Not sure this can every really happen. Warn if it does. */
472 _mesa_problem(NULL
, "referencing deleted buffer object");
478 printf("BufferObj %p %d INCR to %d\n",
479 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
483 _glthread_UNLOCK_MUTEX(bufObj
->Mutex
);
489 * Initialize a buffer object to default values.
492 _mesa_initialize_buffer_object( struct gl_context
*ctx
,
493 struct gl_buffer_object
*obj
,
494 GLuint name
, GLenum target
)
498 memset(obj
, 0, sizeof(struct gl_buffer_object
));
499 _glthread_INIT_MUTEX(obj
->Mutex
);
502 obj
->Usage
= GL_STATIC_DRAW_ARB
;
503 obj
->AccessFlags
= 0;
509 * Callback called from _mesa_HashWalk()
512 count_buffer_size(GLuint key
, void *data
, void *userData
)
514 const struct gl_buffer_object
*bufObj
=
515 (const struct gl_buffer_object
*) data
;
516 GLuint
*total
= (GLuint
*) userData
;
518 *total
= *total
+ bufObj
->Size
;
523 * Compute total size (in bytes) of all buffer objects for the given context.
524 * For debugging purposes.
527 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
531 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
538 * Allocate space for and store data in a buffer object. Any data that was
539 * previously stored in the buffer object is lost. If \c data is \c NULL,
540 * memory will be allocated, but no copy will occur.
542 * This is the default callback for \c dd_function_table::BufferData()
543 * Note that all GL error checking will have been done already.
545 * \param ctx GL context.
546 * \param target Buffer object target on which to operate.
547 * \param size Size, in bytes, of the new data store.
548 * \param data Pointer to the data to store in the buffer object. This
549 * pointer may be \c NULL.
550 * \param usage Hints about how the data will be used.
551 * \param bufObj Object to be used.
553 * \return GL_TRUE for success, GL_FALSE for failure
554 * \sa glBufferDataARB, dd_function_table::BufferData.
557 _mesa_buffer_data( struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
558 const GLvoid
* data
, GLenum usage
,
559 struct gl_buffer_object
* bufObj
)
563 (void) ctx
; (void) target
;
565 new_data
= _mesa_realloc( bufObj
->Data
, bufObj
->Size
, size
);
567 bufObj
->Data
= (GLubyte
*) new_data
;
569 bufObj
->Usage
= usage
;
572 memcpy( bufObj
->Data
, data
, size
);
584 * Replace data in a subrange of buffer object. If the data range
585 * specified by \c size + \c offset extends beyond the end of the buffer or
586 * if \c data is \c NULL, no copy is performed.
588 * This is the default callback for \c dd_function_table::BufferSubData()
589 * Note that all GL error checking will have been done already.
591 * \param ctx GL context.
592 * \param offset Offset of the first byte to be modified.
593 * \param size Size, in bytes, of the data range.
594 * \param data Pointer to the data to store in the buffer object.
595 * \param bufObj Object to be used.
597 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
600 _mesa_buffer_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
601 GLsizeiptrARB size
, const GLvoid
* data
,
602 struct gl_buffer_object
* bufObj
)
606 /* this should have been caught in _mesa_BufferSubData() */
607 ASSERT(size
+ offset
<= bufObj
->Size
);
610 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
616 * Retrieve data from a subrange of buffer object. If the data range
617 * specified by \c size + \c offset extends beyond the end of the buffer or
618 * if \c data is \c NULL, no copy is performed.
620 * This is the default callback for \c dd_function_table::GetBufferSubData()
621 * Note that all GL error checking will have been done already.
623 * \param ctx GL context.
624 * \param target Buffer object target on which to operate.
625 * \param offset Offset of the first byte to be fetched.
626 * \param size Size, in bytes, of the data range.
627 * \param data Destination for data
628 * \param bufObj Object to be used.
630 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
633 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
634 GLsizeiptrARB size
, GLvoid
* data
,
635 struct gl_buffer_object
* bufObj
)
639 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
640 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
646 * Clear a subrange of the buffer object with copies of the supplied data.
647 * If data is NULL the buffer is filled with zeros.
649 * This is the default callback for \c dd_function_table::ClearBufferSubData()
650 * Note that all GL error checking will have been done already.
652 * \param ctx GL context.
653 * \param offset Offset of the first byte to be cleared.
654 * \param size Size, in bytes, of the to be cleared range.
655 * \param clearValue Source of the data.
656 * \param clearValueSize Size, in bytes, of the supplied data.
657 * \param bufObj Object to be cleared.
659 * \sa glClearBufferSubData, glClearBufferData and
660 * dd_function_table::ClearBufferSubData.
663 _mesa_buffer_clear_subdata(struct gl_context
*ctx
,
664 GLintptr offset
, GLsizeiptr size
,
665 const GLvoid
*clearValue
,
666 GLsizeiptr clearValueSize
,
667 struct gl_buffer_object
*bufObj
)
672 if (_mesa_bufferobj_mapped(bufObj
)) {
673 GLubyte
*data
= malloc(size
);
674 GLubyte
*dataStart
= data
;
676 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
680 if (clearValue
== NULL
) {
681 /* Clear with zeros, per the spec */
682 memset(data
, 0, size
);
685 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
686 memcpy(data
, clearValue
, clearValueSize
);
687 data
+= clearValueSize
;
690 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, dataStart
, bufObj
);
694 ASSERT(ctx
->Driver
.MapBufferRange
);
695 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
697 GL_MAP_INVALIDATE_RANGE_BIT
,
701 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
705 if (clearValue
== NULL
) {
706 /* Clear with zeros, per the spec */
707 memset(dest
, 0, size
);
708 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
712 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
713 memcpy(dest
, clearValue
, clearValueSize
);
714 dest
+= clearValueSize
;
717 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
722 * Default fallback for \c dd_function_table::MapBufferRange().
723 * Called via glMapBufferRange().
726 _mesa_buffer_map_range( struct gl_context
*ctx
, GLintptr offset
,
727 GLsizeiptr length
, GLbitfield access
,
728 struct gl_buffer_object
*bufObj
)
731 assert(!_mesa_bufferobj_mapped(bufObj
));
732 /* Just return a direct pointer to the data */
733 bufObj
->Pointer
= bufObj
->Data
+ offset
;
734 bufObj
->Length
= length
;
735 bufObj
->Offset
= offset
;
736 bufObj
->AccessFlags
= access
;
737 return bufObj
->Pointer
;
742 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
743 * Called via glFlushMappedBufferRange().
746 _mesa_buffer_flush_mapped_range( struct gl_context
*ctx
,
747 GLintptr offset
, GLsizeiptr length
,
748 struct gl_buffer_object
*obj
)
759 * Default callback for \c dd_function_table::MapBuffer().
761 * The input parameters will have been already tested for errors.
763 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
766 _mesa_buffer_unmap( struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
769 /* XXX we might assert here that bufObj->Pointer is non-null */
770 bufObj
->Pointer
= NULL
;
773 bufObj
->AccessFlags
= 0x0;
779 * Default fallback for \c dd_function_table::CopyBufferSubData().
780 * Called via glCopyBufferSubData().
783 _mesa_copy_buffer_subdata(struct gl_context
*ctx
,
784 struct gl_buffer_object
*src
,
785 struct gl_buffer_object
*dst
,
786 GLintptr readOffset
, GLintptr writeOffset
,
789 GLubyte
*srcPtr
, *dstPtr
;
791 /* the buffers should not be mapped */
792 assert(!_mesa_bufferobj_mapped(src
));
793 assert(!_mesa_bufferobj_mapped(dst
));
796 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
798 GL_MAP_WRITE_BIT
, src
);
803 srcPtr
+= readOffset
;
804 dstPtr
+= writeOffset
;
806 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
807 GL_MAP_READ_BIT
, src
);
808 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
810 GL_MAP_INVALIDATE_RANGE_BIT
), dst
);
813 /* Note: the src and dst regions will never overlap. Trying to do so
814 * would generate GL_INVALID_VALUE earlier.
816 if (srcPtr
&& dstPtr
)
817 memcpy(dstPtr
, srcPtr
, size
);
819 ctx
->Driver
.UnmapBuffer(ctx
, src
);
821 ctx
->Driver
.UnmapBuffer(ctx
, dst
);
827 * Initialize the state associated with buffer objects
830 _mesa_init_buffer_objects( struct gl_context
*ctx
)
834 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
835 _glthread_INIT_MUTEX(DummyBufferObject
.Mutex
);
836 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
838 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
839 ctx
->Shared
->NullBufferObj
);
841 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
842 ctx
->Shared
->NullBufferObj
);
843 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
844 ctx
->Shared
->NullBufferObj
);
846 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
847 ctx
->Shared
->NullBufferObj
);
849 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
850 ctx
->Shared
->NullBufferObj
);
852 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
853 _mesa_reference_buffer_object(ctx
,
854 &ctx
->UniformBufferBindings
[i
].BufferObject
,
855 ctx
->Shared
->NullBufferObj
);
856 ctx
->UniformBufferBindings
[i
].Offset
= -1;
857 ctx
->UniformBufferBindings
[i
].Size
= -1;
863 _mesa_free_buffer_objects( struct gl_context
*ctx
)
867 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
869 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
870 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
872 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
874 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
875 _mesa_reference_buffer_object(ctx
,
876 &ctx
->UniformBufferBindings
[i
].BufferObject
,
882 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
885 struct gl_buffer_object
**buf_handle
,
888 struct gl_buffer_object
*buf
= *buf_handle
;
890 if (!buf
&& ctx
->API
== API_OPENGL_CORE
) {
891 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
895 if (!buf
|| buf
== &DummyBufferObject
) {
896 /* If this is a new buffer object id, or one which was generated but
897 * never used before, allocate a buffer object now.
899 ASSERT(ctx
->Driver
.NewBufferObject
);
900 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
, target
);
902 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
905 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
913 * Bind the specified target to buffer for the specified context.
914 * Called by glBindBuffer() and other functions.
917 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
919 struct gl_buffer_object
*oldBufObj
;
920 struct gl_buffer_object
*newBufObj
= NULL
;
921 struct gl_buffer_object
**bindTarget
= NULL
;
923 bindTarget
= get_buffer_target(ctx
, target
);
925 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
929 /* Get pointer to old buffer object (to be unbound) */
930 oldBufObj
= *bindTarget
;
931 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
932 return; /* rebinding the same buffer object- no change */
935 * Get pointer to new buffer object (newBufObj)
938 /* The spec says there's not a buffer object named 0, but we use
939 * one internally because it simplifies things.
941 newBufObj
= ctx
->Shared
->NullBufferObj
;
944 /* non-default buffer object */
945 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
946 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
947 &newBufObj
, "glBindBuffer"))
951 /* bind new buffer */
952 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
954 /* Pass BindBuffer call to device driver */
955 if (ctx
->Driver
.BindBuffer
)
956 ctx
->Driver
.BindBuffer( ctx
, target
, newBufObj
);
961 * Update the default buffer objects in the given context to reference those
962 * specified in the shared state and release those referencing the old
966 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
968 /* Bind the NullBufferObj to remove references to those
969 * in the shared context hash table.
971 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
972 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
973 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
974 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
980 * Return the gl_buffer_object for the given ID.
981 * Always return NULL for ID 0.
983 struct gl_buffer_object
*
984 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
989 return (struct gl_buffer_object
*)
990 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
995 * If *ptr points to obj, set ptr = the Null/default buffer object.
996 * This is a helper for buffer object deletion.
997 * The GL spec says that deleting a buffer object causes it to get
998 * unbound from all arrays in the current context.
1001 unbind(struct gl_context
*ctx
,
1002 struct gl_buffer_object
**ptr
,
1003 struct gl_buffer_object
*obj
)
1006 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
1012 * Plug default/fallback buffer object functions into the device
1016 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1018 /* GL_ARB_vertex/pixel_buffer_object */
1019 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1020 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1021 driver
->BindBuffer
= NULL
;
1022 driver
->BufferData
= _mesa_buffer_data
;
1023 driver
->BufferSubData
= _mesa_buffer_subdata
;
1024 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
1025 driver
->UnmapBuffer
= _mesa_buffer_unmap
;
1027 /* GL_ARB_clear_buffer_object */
1028 driver
->ClearBufferSubData
= _mesa_buffer_clear_subdata
;
1030 /* GL_ARB_map_buffer_range */
1031 driver
->MapBufferRange
= _mesa_buffer_map_range
;
1032 driver
->FlushMappedBufferRange
= _mesa_buffer_flush_mapped_range
;
1034 /* GL_ARB_copy_buffer */
1035 driver
->CopyBufferSubData
= _mesa_copy_buffer_subdata
;
1040 /**********************************************************************/
1042 /**********************************************************************/
1045 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1047 GET_CURRENT_CONTEXT(ctx
);
1049 if (MESA_VERBOSE
& VERBOSE_API
)
1050 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1051 _mesa_lookup_enum_by_nr(target
), buffer
);
1053 bind_buffer_object(ctx
, target
, buffer
);
1058 * Delete a set of buffer objects.
1060 * \param n Number of buffer objects to delete.
1061 * \param ids Array of \c n buffer object IDs.
1064 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1066 GET_CURRENT_CONTEXT(ctx
);
1068 FLUSH_VERTICES(ctx
, 0);
1071 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1075 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1077 for (i
= 0; i
< n
; i
++) {
1078 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
1080 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
1083 ASSERT(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1085 if (_mesa_bufferobj_mapped(bufObj
)) {
1086 /* if mapped, unmap it now */
1087 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
1088 bufObj
->AccessFlags
= 0;
1089 bufObj
->Pointer
= NULL
;
1092 /* unbind any vertex pointers bound to this buffer */
1093 for (j
= 0; j
< Elements(arrayObj
->VertexBinding
); j
++) {
1094 unbind(ctx
, &arrayObj
->VertexBinding
[j
].BufferObj
, bufObj
);
1097 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1098 _mesa_BindBuffer( GL_ARRAY_BUFFER_ARB
, 0 );
1100 if (arrayObj
->ElementArrayBufferObj
== bufObj
) {
1101 _mesa_BindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
1104 /* unbind ARB_draw_indirect binding point */
1105 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1106 _mesa_BindBuffer( GL_DRAW_INDIRECT_BUFFER
, 0 );
1109 /* unbind ARB_copy_buffer binding points */
1110 if (ctx
->CopyReadBuffer
== bufObj
) {
1111 _mesa_BindBuffer( GL_COPY_READ_BUFFER
, 0 );
1113 if (ctx
->CopyWriteBuffer
== bufObj
) {
1114 _mesa_BindBuffer( GL_COPY_WRITE_BUFFER
, 0 );
1117 /* unbind transform feedback binding points */
1118 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1119 _mesa_BindBuffer( GL_TRANSFORM_FEEDBACK_BUFFER
, 0 );
1121 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1122 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1123 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1127 /* unbind UBO binding points */
1128 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1129 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1130 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1134 if (ctx
->UniformBuffer
== bufObj
) {
1135 _mesa_BindBuffer( GL_UNIFORM_BUFFER
, 0 );
1138 /* unbind any pixel pack/unpack pointers bound to this buffer */
1139 if (ctx
->Pack
.BufferObj
== bufObj
) {
1140 _mesa_BindBuffer( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
1142 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1143 _mesa_BindBuffer( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
1146 if (ctx
->Texture
.BufferObject
== bufObj
) {
1147 _mesa_BindBuffer( GL_TEXTURE_BUFFER
, 0 );
1150 /* The ID is immediately freed for re-use */
1151 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
1152 /* Make sure we do not run into the classic ABA problem on bind.
1153 * We don't want to allow re-binding a buffer object that's been
1154 * "deleted" by glDeleteBuffers().
1156 * The explicit rebinding to the default object in the current context
1157 * prevents the above in the current context, but another context
1158 * sharing the same objects might suffer from this problem.
1159 * The alternative would be to do the hash lookup in any case on bind
1160 * which would introduce more runtime overhead than this.
1162 bufObj
->DeletePending
= GL_TRUE
;
1163 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1167 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1172 * Generate a set of unique buffer object IDs and store them in \c buffer.
1174 * \param n Number of IDs to generate.
1175 * \param buffer Array of \c n locations to store the IDs.
1178 _mesa_GenBuffers(GLsizei n
, GLuint
*buffer
)
1180 GET_CURRENT_CONTEXT(ctx
);
1184 if (MESA_VERBOSE
& VERBOSE_API
)
1185 _mesa_debug(ctx
, "glGenBuffers(%d)\n", n
);
1188 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenBuffersARB");
1197 * This must be atomic (generation and allocation of buffer object IDs)
1199 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1201 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1203 /* Insert the ID and pointer to dummy buffer object into hash table */
1204 for (i
= 0; i
< n
; i
++) {
1205 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, first
+ i
,
1206 &DummyBufferObject
);
1207 buffer
[i
] = first
+ i
;
1210 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1215 * Determine if ID is the name of a buffer object.
1217 * \param id ID of the potential buffer object.
1218 * \return \c GL_TRUE if \c id is the name of a buffer object,
1219 * \c GL_FALSE otherwise.
1221 GLboolean GLAPIENTRY
1222 _mesa_IsBuffer(GLuint id
)
1224 struct gl_buffer_object
*bufObj
;
1225 GET_CURRENT_CONTEXT(ctx
);
1226 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1228 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1229 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1230 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1232 return bufObj
&& bufObj
!= &DummyBufferObject
;
1237 _mesa_BufferData(GLenum target
, GLsizeiptrARB size
,
1238 const GLvoid
* data
, GLenum usage
)
1240 GET_CURRENT_CONTEXT(ctx
);
1241 struct gl_buffer_object
*bufObj
;
1244 if (MESA_VERBOSE
& VERBOSE_API
)
1245 _mesa_debug(ctx
, "glBufferData(%s, %ld, %p, %s)\n",
1246 _mesa_lookup_enum_by_nr(target
),
1247 (long int) size
, data
,
1248 _mesa_lookup_enum_by_nr(usage
));
1251 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBufferDataARB(size < 0)");
1256 case GL_STREAM_DRAW_ARB
:
1257 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1260 case GL_STATIC_DRAW_ARB
:
1261 case GL_DYNAMIC_DRAW_ARB
:
1265 case GL_STREAM_READ_ARB
:
1266 case GL_STREAM_COPY_ARB
:
1267 case GL_STATIC_READ_ARB
:
1268 case GL_STATIC_COPY_ARB
:
1269 case GL_DYNAMIC_READ_ARB
:
1270 case GL_DYNAMIC_COPY_ARB
:
1271 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1275 valid_usage
= false;
1280 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBufferData(usage)");
1284 bufObj
= get_buffer(ctx
, "glBufferDataARB", target
, GL_INVALID_OPERATION
);
1288 if (_mesa_bufferobj_mapped(bufObj
)) {
1289 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1290 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
1291 bufObj
->AccessFlags
= 0;
1292 ASSERT(bufObj
->Pointer
== NULL
);
1295 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1297 bufObj
->Written
= GL_TRUE
;
1300 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1301 bufObj
->Name
, size
, data
, usage
);
1308 ASSERT(ctx
->Driver
.BufferData
);
1309 if (!ctx
->Driver
.BufferData( ctx
, target
, size
, data
, usage
, bufObj
)) {
1310 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBufferDataARB()");
1316 _mesa_BufferSubData(GLenum target
, GLintptrARB offset
,
1317 GLsizeiptrARB size
, const GLvoid
* data
)
1319 GET_CURRENT_CONTEXT(ctx
);
1320 struct gl_buffer_object
*bufObj
;
1322 bufObj
= buffer_object_subdata_range_good( ctx
, target
, offset
, size
,
1323 false, GL_INVALID_OPERATION
,
1324 "glBufferSubDataARB" );
1326 /* error already recorded */
1333 bufObj
->Written
= GL_TRUE
;
1335 ASSERT(ctx
->Driver
.BufferSubData
);
1336 ctx
->Driver
.BufferSubData( ctx
, offset
, size
, data
, bufObj
);
1341 _mesa_GetBufferSubData(GLenum target
, GLintptrARB offset
,
1342 GLsizeiptrARB size
, void * data
)
1344 GET_CURRENT_CONTEXT(ctx
);
1345 struct gl_buffer_object
*bufObj
;
1347 bufObj
= buffer_object_subdata_range_good(ctx
, target
, offset
, size
,
1348 false, GL_INVALID_OPERATION
,
1349 "glGetBufferSubDataARB");
1351 /* error already recorded */
1355 ASSERT(ctx
->Driver
.GetBufferSubData
);
1356 ctx
->Driver
.GetBufferSubData( ctx
, offset
, size
, data
, bufObj
);
1361 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1362 GLenum type
, const GLvoid
* data
)
1364 GET_CURRENT_CONTEXT(ctx
);
1365 struct gl_buffer_object
* bufObj
;
1366 gl_format mesaFormat
;
1367 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1368 GLsizeiptr clearValueSize
;
1370 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1375 if (_mesa_bufferobj_mapped(bufObj
)) {
1376 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1377 "glClearBufferData(buffer currently mapped)");
1381 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1383 "glClearBufferData");
1384 if (mesaFormat
== MESA_FORMAT_NONE
) {
1388 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1389 if (bufObj
->Size
% clearValueSize
!= 0) {
1390 _mesa_error(ctx
, GL_INVALID_VALUE
,
1391 "glClearBufferData(size is not a multiple of "
1392 "internalformat size)");
1397 /* clear to zeros, per the spec */
1398 ctx
->Driver
.ClearBufferSubData(ctx
, 0, bufObj
->Size
,
1403 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1404 format
, type
, data
, "glClearBufferData")) {
1408 ctx
->Driver
.ClearBufferSubData(ctx
, 0, bufObj
->Size
,
1409 clearValue
, clearValueSize
, bufObj
);
1414 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1415 GLintptr offset
, GLsizeiptr size
,
1416 GLenum format
, GLenum type
,
1419 GET_CURRENT_CONTEXT(ctx
);
1420 struct gl_buffer_object
* bufObj
;
1421 gl_format mesaFormat
;
1422 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1423 GLsizeiptr clearValueSize
;
1425 bufObj
= buffer_object_subdata_range_good(ctx
, target
, offset
, size
,
1426 true, GL_INVALID_VALUE
,
1427 "glClearBufferSubData");
1432 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1434 "glClearBufferSubData");
1435 if (mesaFormat
== MESA_FORMAT_NONE
) {
1439 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1440 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1441 _mesa_error(ctx
, GL_INVALID_VALUE
,
1442 "glClearBufferSubData(offset or size is not a multiple of "
1443 "internalformat size)");
1448 /* clear to zeros, per the spec */
1449 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1454 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1456 "glClearBufferSubData")) {
1460 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1461 clearValue
, clearValueSize
, bufObj
);
1466 _mesa_MapBuffer(GLenum target
, GLenum access
)
1468 GET_CURRENT_CONTEXT(ctx
);
1469 struct gl_buffer_object
* bufObj
;
1470 GLbitfield accessFlags
;
1474 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1477 case GL_READ_ONLY_ARB
:
1478 accessFlags
= GL_MAP_READ_BIT
;
1479 valid_access
= _mesa_is_desktop_gl(ctx
);
1481 case GL_WRITE_ONLY_ARB
:
1482 accessFlags
= GL_MAP_WRITE_BIT
;
1483 valid_access
= true;
1485 case GL_READ_WRITE_ARB
:
1486 accessFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
1487 valid_access
= _mesa_is_desktop_gl(ctx
);
1490 valid_access
= false;
1494 if (!valid_access
) {
1495 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBufferARB(access)");
1499 bufObj
= get_buffer(ctx
, "glMapBufferARB", target
, GL_INVALID_OPERATION
);
1503 if (_mesa_bufferobj_mapped(bufObj
)) {
1504 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glMapBufferARB(already mapped)");
1508 if (!bufObj
->Size
) {
1509 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1510 "glMapBuffer(buffer size = 0)");
1514 ASSERT(ctx
->Driver
.MapBufferRange
);
1515 map
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
, accessFlags
, bufObj
);
1517 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1521 /* The driver callback should have set these fields.
1522 * This is important because other modules (like VBO) might call
1523 * the driver function directly.
1525 ASSERT(bufObj
->Pointer
== map
);
1526 ASSERT(bufObj
->Length
== bufObj
->Size
);
1527 ASSERT(bufObj
->Offset
== 0);
1528 bufObj
->AccessFlags
= accessFlags
;
1531 if (access
== GL_WRITE_ONLY_ARB
|| access
== GL_READ_WRITE_ARB
)
1532 bufObj
->Written
= GL_TRUE
;
1535 printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
1536 bufObj
->Name
, bufObj
->Size
, access
);
1537 if (access
== GL_WRITE_ONLY_ARB
) {
1539 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1540 for (i
= 0; i
< bufObj
->Size
; i
++)
1547 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1549 /* buffer is 100 bytes larger than requested, fill with magic value */
1550 for (i
= 0; i
< 100; i
++) {
1551 buf
[bufObj
->Size
- i
- 1] = 123;
1556 return bufObj
->Pointer
;
1560 GLboolean GLAPIENTRY
1561 _mesa_UnmapBuffer(GLenum target
)
1563 GET_CURRENT_CONTEXT(ctx
);
1564 struct gl_buffer_object
*bufObj
;
1565 GLboolean status
= GL_TRUE
;
1566 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1568 bufObj
= get_buffer(ctx
, "glUnmapBufferARB", target
, GL_INVALID_OPERATION
);
1572 if (!_mesa_bufferobj_mapped(bufObj
)) {
1573 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUnmapBufferARB");
1578 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1579 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1581 /* check that last 100 bytes are still = magic value */
1582 for (i
= 0; i
< 100; i
++) {
1583 GLuint pos
= bufObj
->Size
- i
- 1;
1584 if (buf
[pos
] != 123) {
1585 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1586 " at position %d (value = %u)\n",
1594 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1595 GLuint i
, unchanged
= 0;
1596 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1598 /* check which bytes changed */
1599 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1600 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1607 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1608 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1613 status
= ctx
->Driver
.UnmapBuffer( ctx
, bufObj
);
1614 bufObj
->AccessFlags
= 0;
1615 ASSERT(bufObj
->Pointer
== NULL
);
1616 ASSERT(bufObj
->Offset
== 0);
1617 ASSERT(bufObj
->Length
== 0);
1624 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1626 GET_CURRENT_CONTEXT(ctx
);
1627 struct gl_buffer_object
*bufObj
;
1629 bufObj
= get_buffer(ctx
, "glGetBufferParameterivARB", target
,
1630 GL_INVALID_OPERATION
);
1635 case GL_BUFFER_SIZE_ARB
:
1636 *params
= (GLint
) bufObj
->Size
;
1638 case GL_BUFFER_USAGE_ARB
:
1639 *params
= bufObj
->Usage
;
1641 case GL_BUFFER_ACCESS_ARB
:
1642 *params
= simplified_access_mode(ctx
, bufObj
->AccessFlags
);
1644 case GL_BUFFER_MAPPED_ARB
:
1645 *params
= _mesa_bufferobj_mapped(bufObj
);
1647 case GL_BUFFER_ACCESS_FLAGS
:
1648 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1650 *params
= bufObj
->AccessFlags
;
1652 case GL_BUFFER_MAP_OFFSET
:
1653 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1655 *params
= (GLint
) bufObj
->Offset
;
1657 case GL_BUFFER_MAP_LENGTH
:
1658 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1660 *params
= (GLint
) bufObj
->Length
;
1663 ; /* fall-through */
1667 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameterivARB(pname=%s)",
1668 _mesa_lookup_enum_by_nr(pname
));
1674 * This is pretty much a duplicate of GetBufferParameteriv() but the
1675 * GL_BUFFER_SIZE_ARB attribute will be 64-bits on a 64-bit system.
1678 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
1680 GET_CURRENT_CONTEXT(ctx
);
1681 struct gl_buffer_object
*bufObj
;
1683 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
1684 GL_INVALID_OPERATION
);
1689 case GL_BUFFER_SIZE_ARB
:
1690 *params
= bufObj
->Size
;
1692 case GL_BUFFER_USAGE_ARB
:
1693 *params
= bufObj
->Usage
;
1695 case GL_BUFFER_ACCESS_ARB
:
1696 *params
= simplified_access_mode(ctx
, bufObj
->AccessFlags
);
1698 case GL_BUFFER_ACCESS_FLAGS
:
1699 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1701 *params
= bufObj
->AccessFlags
;
1703 case GL_BUFFER_MAPPED_ARB
:
1704 *params
= _mesa_bufferobj_mapped(bufObj
);
1706 case GL_BUFFER_MAP_OFFSET
:
1707 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1709 *params
= bufObj
->Offset
;
1711 case GL_BUFFER_MAP_LENGTH
:
1712 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1714 *params
= bufObj
->Length
;
1717 ; /* fall-through */
1721 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferParameteri64v(pname=%s)",
1722 _mesa_lookup_enum_by_nr(pname
));
1727 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
1729 GET_CURRENT_CONTEXT(ctx
);
1730 struct gl_buffer_object
* bufObj
;
1732 if (pname
!= GL_BUFFER_MAP_POINTER_ARB
) {
1733 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointervARB(pname)");
1737 bufObj
= get_buffer(ctx
, "glGetBufferPointervARB", target
,
1738 GL_INVALID_OPERATION
);
1742 *params
= bufObj
->Pointer
;
1747 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
1748 GLintptr readOffset
, GLintptr writeOffset
,
1751 GET_CURRENT_CONTEXT(ctx
);
1752 struct gl_buffer_object
*src
, *dst
;
1754 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
1755 GL_INVALID_OPERATION
);
1759 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
1760 GL_INVALID_OPERATION
);
1764 if (_mesa_bufferobj_mapped(src
)) {
1765 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1766 "glCopyBufferSubData(readBuffer is mapped)");
1770 if (_mesa_bufferobj_mapped(dst
)) {
1771 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1772 "glCopyBufferSubData(writeBuffer is mapped)");
1776 if (readOffset
< 0) {
1777 _mesa_error(ctx
, GL_INVALID_VALUE
,
1778 "glCopyBufferSubData(readOffset = %d)", (int) readOffset
);
1782 if (writeOffset
< 0) {
1783 _mesa_error(ctx
, GL_INVALID_VALUE
,
1784 "glCopyBufferSubData(writeOffset = %d)", (int) writeOffset
);
1789 _mesa_error(ctx
, GL_INVALID_VALUE
,
1790 "glCopyBufferSubData(writeOffset = %d)", (int) size
);
1794 if (readOffset
+ size
> src
->Size
) {
1795 _mesa_error(ctx
, GL_INVALID_VALUE
,
1796 "glCopyBufferSubData(readOffset + size = %d)",
1797 (int) (readOffset
+ size
));
1801 if (writeOffset
+ size
> dst
->Size
) {
1802 _mesa_error(ctx
, GL_INVALID_VALUE
,
1803 "glCopyBufferSubData(writeOffset + size = %d)",
1804 (int) (writeOffset
+ size
));
1809 if (readOffset
+ size
<= writeOffset
) {
1812 else if (writeOffset
+ size
<= readOffset
) {
1816 /* overlapping src/dst is illegal */
1817 _mesa_error(ctx
, GL_INVALID_VALUE
,
1818 "glCopyBufferSubData(overlapping src/dst)");
1823 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
1828 * See GL_ARB_map_buffer_range spec
1831 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
1834 GET_CURRENT_CONTEXT(ctx
);
1835 struct gl_buffer_object
*bufObj
;
1838 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
1840 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1841 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1842 "glMapBufferRange(extension not supported)");
1847 _mesa_error(ctx
, GL_INVALID_VALUE
,
1848 "glMapBufferRange(offset = %ld)", (long)offset
);
1853 _mesa_error(ctx
, GL_INVALID_VALUE
,
1854 "glMapBufferRange(length = %ld)", (long)length
);
1858 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
1860 * "An INVALID_OPERATION error is generated for any of the following
1863 * * <length> is zero."
1865 if (_mesa_is_gles(ctx
) && length
== 0) {
1866 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1867 "glMapBufferRange(length = 0)");
1871 if (access
& ~(GL_MAP_READ_BIT
|
1873 GL_MAP_INVALIDATE_RANGE_BIT
|
1874 GL_MAP_INVALIDATE_BUFFER_BIT
|
1875 GL_MAP_FLUSH_EXPLICIT_BIT
|
1876 GL_MAP_UNSYNCHRONIZED_BIT
)) {
1877 /* generate an error if any undefind bit is set */
1878 _mesa_error(ctx
, GL_INVALID_VALUE
, "glMapBufferRange(access)");
1882 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
1883 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1884 "glMapBufferRange(access indicates neither read or write)");
1888 if ((access
& GL_MAP_READ_BIT
) &&
1889 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
1890 GL_MAP_INVALIDATE_BUFFER_BIT
|
1891 GL_MAP_UNSYNCHRONIZED_BIT
))) {
1892 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1893 "glMapBufferRange(invalid access flags)");
1897 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
1898 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
1899 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1900 "glMapBufferRange(invalid access flags)");
1904 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
1908 if (offset
+ length
> bufObj
->Size
) {
1909 _mesa_error(ctx
, GL_INVALID_VALUE
,
1910 "glMapBufferRange(offset + length > size)");
1914 if (_mesa_bufferobj_mapped(bufObj
)) {
1915 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1916 "glMapBufferRange(buffer already mapped)");
1920 if (!bufObj
->Size
) {
1921 _mesa_error(ctx
, GL_OUT_OF_MEMORY
,
1922 "glMapBufferRange(buffer size = 0)");
1926 /* Mapping zero bytes should return a non-null pointer. */
1928 static long dummy
= 0;
1929 bufObj
->Pointer
= &dummy
;
1930 bufObj
->Length
= length
;
1931 bufObj
->Offset
= offset
;
1932 bufObj
->AccessFlags
= access
;
1933 return bufObj
->Pointer
;
1936 ASSERT(ctx
->Driver
.MapBufferRange
);
1937 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
);
1939 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMapBufferARB(map failed)");
1942 /* The driver callback should have set all these fields.
1943 * This is important because other modules (like VBO) might call
1944 * the driver function directly.
1946 ASSERT(bufObj
->Pointer
== map
);
1947 ASSERT(bufObj
->Length
== length
);
1948 ASSERT(bufObj
->Offset
== offset
);
1949 ASSERT(bufObj
->AccessFlags
== access
);
1957 * See GL_ARB_map_buffer_range spec
1960 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
)
1962 GET_CURRENT_CONTEXT(ctx
);
1963 struct gl_buffer_object
*bufObj
;
1965 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
1966 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1967 "glFlushMappedBufferRange(extension not supported)");
1972 _mesa_error(ctx
, GL_INVALID_VALUE
,
1973 "glFlushMappedBufferRange(offset = %ld)", (long)offset
);
1978 _mesa_error(ctx
, GL_INVALID_VALUE
,
1979 "glFlushMappedBufferRange(length = %ld)", (long)length
);
1983 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
1984 GL_INVALID_OPERATION
);
1988 if (!_mesa_bufferobj_mapped(bufObj
)) {
1989 /* buffer is not mapped */
1990 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1991 "glFlushMappedBufferRange(buffer is not mapped)");
1995 if ((bufObj
->AccessFlags
& GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
1996 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1997 "glFlushMappedBufferRange(GL_MAP_FLUSH_EXPLICIT_BIT not set)");
2001 if (offset
+ length
> bufObj
->Length
) {
2002 _mesa_error(ctx
, GL_INVALID_VALUE
,
2003 "glFlushMappedBufferRange(offset %ld + length %ld > mapped length %ld)",
2004 (long)offset
, (long)length
, (long)bufObj
->Length
);
2008 ASSERT(bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
);
2010 if (ctx
->Driver
.FlushMappedBufferRange
)
2011 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
);
2016 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2018 struct gl_buffer_object
*bufObj
;
2021 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2023 _mesa_error(ctx
, GL_INVALID_VALUE
,
2024 "glObjectPurgeable(name = 0x%x)", name
);
2027 if (!_mesa_is_bufferobj(bufObj
)) {
2028 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
2032 if (bufObj
->Purgeable
) {
2033 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2034 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2035 return GL_VOLATILE_APPLE
;
2038 bufObj
->Purgeable
= GL_TRUE
;
2040 retval
= GL_VOLATILE_APPLE
;
2041 if (ctx
->Driver
.BufferObjectPurgeable
)
2042 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
2049 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2051 struct gl_renderbuffer
*bufObj
;
2054 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2056 _mesa_error(ctx
, GL_INVALID_VALUE
,
2057 "glObjectUnpurgeable(name = 0x%x)", name
);
2061 if (bufObj
->Purgeable
) {
2062 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2063 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2064 return GL_VOLATILE_APPLE
;
2067 bufObj
->Purgeable
= GL_TRUE
;
2069 retval
= GL_VOLATILE_APPLE
;
2070 if (ctx
->Driver
.RenderObjectPurgeable
)
2071 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
2078 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2080 struct gl_texture_object
*bufObj
;
2083 bufObj
= _mesa_lookup_texture(ctx
, name
);
2085 _mesa_error(ctx
, GL_INVALID_VALUE
,
2086 "glObjectPurgeable(name = 0x%x)", name
);
2090 if (bufObj
->Purgeable
) {
2091 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2092 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2093 return GL_VOLATILE_APPLE
;
2096 bufObj
->Purgeable
= GL_TRUE
;
2098 retval
= GL_VOLATILE_APPLE
;
2099 if (ctx
->Driver
.TextureObjectPurgeable
)
2100 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
2107 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2111 GET_CURRENT_CONTEXT(ctx
);
2112 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2115 _mesa_error(ctx
, GL_INVALID_VALUE
,
2116 "glObjectPurgeable(name = 0x%x)", name
);
2121 case GL_VOLATILE_APPLE
:
2122 case GL_RELEASED_APPLE
:
2126 _mesa_error(ctx
, GL_INVALID_ENUM
,
2127 "glObjectPurgeable(name = 0x%x) invalid option: %d",
2132 switch (objectType
) {
2134 retval
= texture_object_purgeable(ctx
, name
, option
);
2136 case GL_RENDERBUFFER_EXT
:
2137 retval
= renderbuffer_purgeable(ctx
, name
, option
);
2139 case GL_BUFFER_OBJECT_APPLE
:
2140 retval
= buffer_object_purgeable(ctx
, name
, option
);
2143 _mesa_error(ctx
, GL_INVALID_ENUM
,
2144 "glObjectPurgeable(name = 0x%x) invalid type: %d",
2149 /* In strict conformance to the spec, we must only return VOLATILE when
2150 * when passed the VOLATILE option. Madness.
2152 * XXX First fix the spec, then fix me.
2154 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
2159 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2161 struct gl_buffer_object
*bufObj
;
2164 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2166 _mesa_error(ctx
, GL_INVALID_VALUE
,
2167 "glObjectUnpurgeable(name = 0x%x)", name
);
2171 if (! bufObj
->Purgeable
) {
2172 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2173 "glObjectUnpurgeable(name = 0x%x) object is "
2174 " already \"unpurged\"", name
);
2178 bufObj
->Purgeable
= GL_FALSE
;
2181 if (ctx
->Driver
.BufferObjectUnpurgeable
)
2182 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
2189 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2191 struct gl_renderbuffer
*bufObj
;
2194 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2196 _mesa_error(ctx
, GL_INVALID_VALUE
,
2197 "glObjectUnpurgeable(name = 0x%x)", name
);
2201 if (! bufObj
->Purgeable
) {
2202 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2203 "glObjectUnpurgeable(name = 0x%x) object is "
2204 " already \"unpurged\"", name
);
2208 bufObj
->Purgeable
= GL_FALSE
;
2211 if (ctx
->Driver
.RenderObjectUnpurgeable
)
2212 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
2219 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2221 struct gl_texture_object
*bufObj
;
2224 bufObj
= _mesa_lookup_texture(ctx
, name
);
2226 _mesa_error(ctx
, GL_INVALID_VALUE
,
2227 "glObjectUnpurgeable(name = 0x%x)", name
);
2231 if (! bufObj
->Purgeable
) {
2232 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2233 "glObjectUnpurgeable(name = 0x%x) object is"
2234 " already \"unpurged\"", name
);
2238 bufObj
->Purgeable
= GL_FALSE
;
2241 if (ctx
->Driver
.TextureObjectUnpurgeable
)
2242 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
2249 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2251 GET_CURRENT_CONTEXT(ctx
);
2252 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2255 _mesa_error(ctx
, GL_INVALID_VALUE
,
2256 "glObjectUnpurgeable(name = 0x%x)", name
);
2261 case GL_RETAINED_APPLE
:
2262 case GL_UNDEFINED_APPLE
:
2266 _mesa_error(ctx
, GL_INVALID_ENUM
,
2267 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
2272 switch (objectType
) {
2273 case GL_BUFFER_OBJECT_APPLE
:
2274 return buffer_object_unpurgeable(ctx
, name
, option
);
2276 return texture_object_unpurgeable(ctx
, name
, option
);
2277 case GL_RENDERBUFFER_EXT
:
2278 return renderbuffer_unpurgeable(ctx
, name
, option
);
2280 _mesa_error(ctx
, GL_INVALID_ENUM
,
2281 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
2289 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
2290 GLenum pname
, GLint
*params
)
2292 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2294 _mesa_error(ctx
, GL_INVALID_VALUE
,
2295 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
2300 case GL_PURGEABLE_APPLE
:
2301 *params
= bufObj
->Purgeable
;
2304 _mesa_error(ctx
, GL_INVALID_ENUM
,
2305 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2313 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
2314 GLenum pname
, GLint
*params
)
2316 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
2318 _mesa_error(ctx
, GL_INVALID_VALUE
,
2319 "glObjectUnpurgeable(name = 0x%x)", name
);
2324 case GL_PURGEABLE_APPLE
:
2325 *params
= rb
->Purgeable
;
2328 _mesa_error(ctx
, GL_INVALID_ENUM
,
2329 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2337 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
2338 GLenum pname
, GLint
*params
)
2340 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
2342 _mesa_error(ctx
, GL_INVALID_VALUE
,
2343 "glObjectUnpurgeable(name = 0x%x)", name
);
2348 case GL_PURGEABLE_APPLE
:
2349 *params
= texObj
->Purgeable
;
2352 _mesa_error(ctx
, GL_INVALID_ENUM
,
2353 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2361 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
2364 GET_CURRENT_CONTEXT(ctx
);
2367 _mesa_error(ctx
, GL_INVALID_VALUE
,
2368 "glGetObjectParameteriv(name = 0x%x)", name
);
2372 switch (objectType
) {
2374 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
2376 case GL_BUFFER_OBJECT_APPLE
:
2377 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
2379 case GL_RENDERBUFFER_EXT
:
2380 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
2383 _mesa_error(ctx
, GL_INVALID_ENUM
,
2384 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
2390 set_ubo_binding(struct gl_context
*ctx
,
2392 struct gl_buffer_object
*bufObj
,
2397 struct gl_uniform_buffer_binding
*binding
;
2399 binding
= &ctx
->UniformBufferBindings
[index
];
2400 if (binding
->BufferObject
== bufObj
&&
2401 binding
->Offset
== offset
&&
2402 binding
->Size
== size
&&
2403 binding
->AutomaticSize
== autoSize
) {
2407 FLUSH_VERTICES(ctx
, 0);
2408 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
2410 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2411 binding
->Offset
= offset
;
2412 binding
->Size
= size
;
2413 binding
->AutomaticSize
= autoSize
;
2417 * Bind a region of a buffer object to a uniform block binding point.
2418 * \param index the uniform buffer binding point index
2419 * \param bufObj the buffer object
2420 * \param offset offset to the start of buffer object region
2421 * \param size size of the buffer object region
2424 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
2426 struct gl_buffer_object
*bufObj
,
2430 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2431 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2435 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
2436 _mesa_error(ctx
, GL_INVALID_VALUE
,
2437 "glBindBufferRange(offset misalgned %d/%d)", (int) offset
,
2438 ctx
->Const
.UniformBufferOffsetAlignment
);
2442 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2447 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2448 set_ubo_binding(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2453 * Bind a buffer object to a uniform block binding point.
2454 * As above, but offset = 0.
2457 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
2459 struct gl_buffer_object
*bufObj
)
2461 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2462 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2466 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2467 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2468 set_ubo_binding(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2470 set_ubo_binding(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2474 set_atomic_buffer_binding(struct gl_context
*ctx
,
2476 struct gl_buffer_object
*bufObj
,
2481 struct gl_atomic_buffer_binding
*binding
;
2483 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
2484 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
2488 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
2489 _mesa_error(ctx
, GL_INVALID_VALUE
,
2490 "%s(offset misalgned %d/%d)", name
, (int) offset
,
2491 ATOMIC_COUNTER_SIZE
);
2495 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
2497 binding
= &ctx
->AtomicBufferBindings
[index
];
2498 if (binding
->BufferObject
== bufObj
&&
2499 binding
->Offset
== offset
&&
2500 binding
->Size
== size
) {
2504 FLUSH_VERTICES(ctx
, 0);
2505 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
2507 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2509 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2510 binding
->Offset
= -1;
2513 binding
->Offset
= offset
;
2514 binding
->Size
= size
;
2519 _mesa_BindBufferRange(GLenum target
, GLuint index
,
2520 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
2522 GET_CURRENT_CONTEXT(ctx
);
2523 struct gl_buffer_object
*bufObj
;
2526 bufObj
= ctx
->Shared
->NullBufferObj
;
2528 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2530 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
2531 &bufObj
, "glBindBufferRange"))
2535 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2536 "glBindBufferRange(invalid buffer=%u)", buffer
);
2542 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
2549 case GL_TRANSFORM_FEEDBACK_BUFFER
:
2550 _mesa_bind_buffer_range_transform_feedback(ctx
, index
, bufObj
,
2553 case GL_UNIFORM_BUFFER
:
2554 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
2556 case GL_ATOMIC_COUNTER_BUFFER
:
2557 set_atomic_buffer_binding(ctx
, index
, bufObj
, offset
, size
,
2558 "glBindBufferRange");
2561 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
2567 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
2569 GET_CURRENT_CONTEXT(ctx
);
2570 struct gl_buffer_object
*bufObj
;
2573 bufObj
= ctx
->Shared
->NullBufferObj
;
2575 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2577 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
2578 &bufObj
, "glBindBufferBase"))
2582 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2583 "glBindBufferBase(invalid buffer=%u)", buffer
);
2587 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
2588 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
2590 * "BindBufferBase is equivalent to calling BindBufferRange with offset
2591 * zero and size equal to the size of buffer."
2593 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
2595 * "If the parameter (starting offset or size) was not specified when the
2596 * buffer object was bound, zero is returned."
2598 * What happens if the size of the buffer changes? Does the size of the
2599 * buffer at the moment glBindBufferBase was called still play a role, like
2600 * the first quote would imply, or is the size meaningless in the
2601 * glBindBufferBase case like the second quote would suggest? The GL 4.1
2602 * core spec page 45 says:
2604 * "It is equivalent to calling BindBufferRange with offset zero, while
2605 * size is determined by the size of the bound buffer at the time the
2608 * My interpretation is that the GL 4.1 spec was a clarification of the
2609 * behavior, not a change. In particular, this choice will only make
2610 * rendering work in cases where it would have had undefined results.
2614 case GL_TRANSFORM_FEEDBACK_BUFFER
:
2615 _mesa_bind_buffer_base_transform_feedback(ctx
, index
, bufObj
);
2617 case GL_UNIFORM_BUFFER
:
2618 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
2620 case GL_ATOMIC_COUNTER_BUFFER
:
2621 set_atomic_buffer_binding(ctx
, index
, bufObj
, 0, 0,
2622 "glBindBufferBase");
2625 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
2631 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
2634 GET_CURRENT_CONTEXT(ctx
);
2635 struct gl_buffer_object
*bufObj
;
2636 const GLintptr end
= offset
+ length
;
2638 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2640 _mesa_error(ctx
, GL_INVALID_VALUE
,
2641 "glInvalidateBufferSubData(name = 0x%x) invalid object",
2646 /* The GL_ARB_invalidate_subdata spec says:
2648 * "An INVALID_VALUE error is generated if <offset> or <length> is
2649 * negative, or if <offset> + <length> is greater than the value of
2652 if (end
< 0 || end
> bufObj
->Size
) {
2653 _mesa_error(ctx
, GL_INVALID_VALUE
,
2654 "glInvalidateBufferSubData(invalid offset or length)");
2658 /* The GL_ARB_invalidate_subdata spec says:
2660 * "An INVALID_OPERATION error is generated if the buffer is currently
2661 * mapped by MapBuffer, or if the invalidate range intersects the range
2662 * currently mapped by MapBufferRange."
2664 if (bufferobj_range_mapped(bufObj
, offset
, length
)) {
2665 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2666 "glInvalidateBufferSubData(intersection with mapped "
2671 /* We don't actually do anything for this yet. Just return after
2672 * validating the parameters and generating the required errors.
2678 _mesa_InvalidateBufferData(GLuint buffer
)
2680 GET_CURRENT_CONTEXT(ctx
);
2681 struct gl_buffer_object
*bufObj
;
2683 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2685 _mesa_error(ctx
, GL_INVALID_VALUE
,
2686 "glInvalidateBufferData(name = 0x%x) invalid object",
2691 /* The GL_ARB_invalidate_subdata spec says:
2693 * "An INVALID_OPERATION error is generated if the buffer is currently
2694 * mapped by MapBuffer, or if the invalidate range intersects the range
2695 * currently mapped by MapBufferRange."
2697 if (_mesa_bufferobj_mapped(bufObj
)) {
2698 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2699 "glInvalidateBufferData(intersection with mapped "
2704 /* We don't actually do anything for this yet. Just return after
2705 * validating the parameters and generating the required errors.