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
34 #include <inttypes.h> /* for PRId64 macro */
35 #include "util/debug.h"
41 #include "bufferobj.h"
44 #include "glformats.h"
46 #include "transformfeedback.h"
52 /*#define BOUNDS_CHECK*/
56 * We count the number of buffer modification calls to check for
57 * inefficient buffer use. This is the number of such calls before we
60 #define BUFFER_WARNING_CALL_COUNT 4
64 * Helper to warn of possible performance issues, such as frequently
65 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
69 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
74 _mesa_gl_vdebug(ctx
, id
,
75 MESA_DEBUG_SOURCE_API
,
76 MESA_DEBUG_TYPE_PERFORMANCE
,
77 MESA_DEBUG_SEVERITY_MEDIUM
,
82 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
84 static GLuint id = 0; \
85 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
90 * Used as a placeholder for buffer objects between glGenBuffers() and
91 * glBindBuffer() so that glIsBuffer() can work correctly.
93 static struct gl_buffer_object DummyBufferObject
;
97 * Return pointer to address of a buffer object target.
98 * \param ctx the GL context
99 * \param target the buffer object target to be retrieved.
100 * \return pointer to pointer to the buffer object bound to \c target in the
101 * specified context or \c NULL if \c target is invalid.
103 static inline struct gl_buffer_object
**
104 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
106 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
108 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
109 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
113 case GL_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.ArrayBufferObj
;
115 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
116 return &ctx
->Array
.VAO
->IndexBufferObj
;
117 case GL_PIXEL_PACK_BUFFER_EXT
:
118 return &ctx
->Pack
.BufferObj
;
119 case GL_PIXEL_UNPACK_BUFFER_EXT
:
120 return &ctx
->Unpack
.BufferObj
;
121 case GL_COPY_READ_BUFFER
:
122 return &ctx
->CopyReadBuffer
;
123 case GL_COPY_WRITE_BUFFER
:
124 return &ctx
->CopyWriteBuffer
;
125 case GL_QUERY_BUFFER
:
126 if (_mesa_has_ARB_query_buffer_object(ctx
))
127 return &ctx
->QueryBuffer
;
129 case GL_DRAW_INDIRECT_BUFFER
:
130 if ((ctx
->API
== API_OPENGL_CORE
&&
131 ctx
->Extensions
.ARB_draw_indirect
) ||
132 _mesa_is_gles31(ctx
)) {
133 return &ctx
->DrawIndirectBuffer
;
136 case GL_PARAMETER_BUFFER_ARB
:
137 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
138 return &ctx
->ParameterBuffer
;
141 case GL_DISPATCH_INDIRECT_BUFFER
:
142 if (_mesa_has_compute_shaders(ctx
)) {
143 return &ctx
->DispatchIndirectBuffer
;
146 case GL_TRANSFORM_FEEDBACK_BUFFER
:
147 if (ctx
->Extensions
.EXT_transform_feedback
) {
148 return &ctx
->TransformFeedback
.CurrentBuffer
;
151 case GL_TEXTURE_BUFFER
:
152 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
153 _mesa_has_OES_texture_buffer(ctx
)) {
154 return &ctx
->Texture
.BufferObject
;
157 case GL_UNIFORM_BUFFER
:
158 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
159 return &ctx
->UniformBuffer
;
162 case GL_SHADER_STORAGE_BUFFER
:
163 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
164 return &ctx
->ShaderStorageBuffer
;
167 case GL_ATOMIC_COUNTER_BUFFER
:
168 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
169 return &ctx
->AtomicBuffer
;
172 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
173 if (ctx
->Extensions
.AMD_pinned_memory
) {
174 return &ctx
->ExternalVirtualMemoryBuffer
;
185 * Get the buffer object bound to the specified target in a GL context.
186 * \param ctx the GL context
187 * \param target the buffer object target to be retrieved.
188 * \param error the GL error to record if target is illegal.
189 * \return pointer to the buffer object bound to \c target in the
190 * specified context or \c NULL if \c target is invalid.
192 static inline struct gl_buffer_object
*
193 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
196 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
199 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
203 if (!_mesa_is_bufferobj(*bufObj
)) {
204 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
213 * Convert a GLbitfield describing the mapped buffer access flags
214 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
217 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
219 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
220 if ((access
& rwFlags
) == rwFlags
)
221 return GL_READ_WRITE
;
222 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
224 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
225 return GL_WRITE_ONLY
;
227 /* Otherwise, AccessFlags is zero (the default state).
229 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
231 * Name Type Initial Value Legal Values
233 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
236 * However, table 6.8 in the GL_OES_mapbuffer extension says:
238 * Get Value Type Get Command Value Description
239 * --------- ---- ----------- ----- -----------
240 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
242 * The difference is because GL_OES_mapbuffer only supports mapping buffers
247 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
252 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
254 * The regions do not overlap if and only if the end of the given
255 * region is before the mapped region or the start of the given region
256 * is after the mapped region.
258 * \param obj Buffer object target on which to operate.
259 * \param offset Offset of the first byte of the subdata range.
260 * \param size Size, in bytes, of the subdata range.
261 * \return true if ranges overlap, false otherwise
265 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
266 GLintptr offset
, GLsizeiptr size
)
268 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
269 const GLintptr end
= offset
+ size
;
270 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
271 obj
->Mappings
[MAP_USER
].Length
;
273 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
282 * Tests the subdata range parameters and sets the GL error code for
283 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
284 * \c glClearBufferSubData.
286 * \param ctx GL context.
287 * \param bufObj The buffer object.
288 * \param offset Offset of the first byte of the subdata range.
289 * \param size Size, in bytes, of the subdata range.
290 * \param mappedRange If true, checks if an overlapping range is mapped.
291 * If false, checks if buffer is mapped.
292 * \param caller Name of calling function for recording errors.
293 * \return false if error, true otherwise
295 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
298 buffer_object_subdata_range_good(struct gl_context
*ctx
,
299 const struct gl_buffer_object
*bufObj
,
300 GLintptr offset
, GLsizeiptr size
,
301 bool mappedRange
, const char *caller
)
304 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
309 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
313 if (offset
+ size
> bufObj
->Size
) {
314 _mesa_error(ctx
, GL_INVALID_VALUE
,
315 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
316 (unsigned long) offset
,
317 (unsigned long) size
,
318 (unsigned long) bufObj
->Size
);
322 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
326 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
328 "%s(range is mapped without persistent bit)",
334 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(buffer is mapped without persistent bit)",
347 * Test the format and type parameters and set the GL error code for
348 * \c glClearBufferData and \c glClearBufferSubData.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is to be converted.
352 * \param format Format of the supplied data.
353 * \param type Type of the supplied data.
354 * \param caller Name of calling function for recording errors.
355 * \return If internalformat, format and type are legal the mesa_format
356 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
358 * \sa glClearBufferData and glClearBufferSubData
361 validate_clear_buffer_format(struct gl_context
*ctx
,
362 GLenum internalformat
,
363 GLenum format
, GLenum type
,
366 mesa_format mesaFormat
;
367 GLenum errorFormatType
;
369 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
370 if (mesaFormat
== MESA_FORMAT_NONE
) {
371 _mesa_error(ctx
, GL_INVALID_ENUM
,
372 "%s(invalid internalformat)", caller
);
373 return MESA_FORMAT_NONE
;
376 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
377 * EXT_texture_integer there is no conversion between integer and
378 * non-integer formats
380 if (_mesa_is_enum_format_signed_int(format
) !=
381 _mesa_is_format_integer_color(mesaFormat
)) {
382 _mesa_error(ctx
, GL_INVALID_OPERATION
,
383 "%s(integer vs non-integer)", caller
);
384 return MESA_FORMAT_NONE
;
387 if (!_mesa_is_color_format(format
)) {
388 _mesa_error(ctx
, GL_INVALID_ENUM
,
389 "%s(format is not a color format)", caller
);
390 return MESA_FORMAT_NONE
;
393 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
394 if (errorFormatType
!= GL_NO_ERROR
) {
395 _mesa_error(ctx
, GL_INVALID_ENUM
,
396 "%s(invalid format or type)", caller
);
397 return MESA_FORMAT_NONE
;
405 * Convert user-specified clear value to the specified internal format.
407 * \param ctx GL context.
408 * \param internalformat Format to which the data is converted.
409 * \param clearValue Points to the converted clear value.
410 * \param format Format of the supplied data.
411 * \param type Type of the supplied data.
412 * \param data Data which is to be converted to internalformat.
413 * \param caller Name of calling function for recording errors.
414 * \return true if data could be converted, false otherwise.
416 * \sa glClearBufferData, glClearBufferSubData
419 convert_clear_buffer_data(struct gl_context
*ctx
,
420 mesa_format internalformat
,
421 GLubyte
*clearValue
, GLenum format
, GLenum type
,
422 const GLvoid
*data
, const char *caller
)
424 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
426 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
427 0, &clearValue
, 1, 1, 1,
428 format
, type
, data
, &ctx
->Unpack
)) {
432 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
439 * Allocate and initialize a new buffer object.
441 * Default callback for the \c dd_function_table::NewBufferObject() hook.
443 static struct gl_buffer_object
*
444 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
446 struct gl_buffer_object
*obj
;
450 obj
= MALLOC_STRUCT(gl_buffer_object
);
451 _mesa_initialize_buffer_object(ctx
, obj
, name
);
457 * Delete a buffer object.
459 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
462 _mesa_delete_buffer_object(struct gl_context
*ctx
,
463 struct gl_buffer_object
*bufObj
)
467 vbo_delete_minmax_cache(bufObj
);
468 _mesa_align_free(bufObj
->Data
);
470 /* assign strange values here to help w/ debugging */
471 bufObj
->RefCount
= -1000;
474 mtx_destroy(&bufObj
->Mutex
);
482 * Set ptr to bufObj w/ reference counting.
483 * This is normally only called from the _mesa_reference_buffer_object() macro
484 * when there's a real pointer change.
487 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
488 struct gl_buffer_object
**ptr
,
489 struct gl_buffer_object
*bufObj
)
492 /* Unreference the old buffer */
493 GLboolean deleteFlag
= GL_FALSE
;
494 struct gl_buffer_object
*oldObj
= *ptr
;
496 mtx_lock(&oldObj
->Mutex
);
497 assert(oldObj
->RefCount
> 0);
499 deleteFlag
= (oldObj
->RefCount
== 0);
500 mtx_unlock(&oldObj
->Mutex
);
503 assert(ctx
->Driver
.DeleteBuffer
);
504 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
512 /* reference new buffer */
513 mtx_lock(&bufObj
->Mutex
);
514 assert(bufObj
->RefCount
> 0);
518 mtx_unlock(&bufObj
->Mutex
);
524 * Get the value of MESA_NO_MINMAX_CACHE.
527 get_no_minmax_cache()
529 static bool read
= false;
530 static bool disable
= false;
533 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
542 * Initialize a buffer object to default values.
545 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
546 struct gl_buffer_object
*obj
,
549 memset(obj
, 0, sizeof(struct gl_buffer_object
));
550 mtx_init(&obj
->Mutex
, mtx_plain
);
553 obj
->Usage
= GL_STATIC_DRAW_ARB
;
555 if (get_no_minmax_cache())
556 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
562 * Callback called from _mesa_HashWalk()
565 count_buffer_size(GLuint key
, void *data
, void *userData
)
567 const struct gl_buffer_object
*bufObj
=
568 (const struct gl_buffer_object
*) data
;
569 GLuint
*total
= (GLuint
*) userData
;
572 *total
= *total
+ bufObj
->Size
;
577 * Compute total size (in bytes) of all buffer objects for the given context.
578 * For debugging purposes.
581 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
585 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
592 * Allocate space for and store data in a buffer object. Any data that was
593 * previously stored in the buffer object is lost. If \c data is \c NULL,
594 * memory will be allocated, but no copy will occur.
596 * This is the default callback for \c dd_function_table::BufferData()
597 * Note that all GL error checking will have been done already.
599 * \param ctx GL context.
600 * \param target Buffer object target on which to operate.
601 * \param size Size, in bytes, of the new data store.
602 * \param data Pointer to the data to store in the buffer object. This
603 * pointer may be \c NULL.
604 * \param usage Hints about how the data will be used.
605 * \param bufObj Object to be used.
607 * \return GL_TRUE for success, GL_FALSE for failure
608 * \sa glBufferDataARB, dd_function_table::BufferData.
611 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
612 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
613 struct gl_buffer_object
*bufObj
)
619 _mesa_align_free( bufObj
->Data
);
621 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
623 bufObj
->Data
= (GLubyte
*) new_data
;
625 bufObj
->Usage
= usage
;
626 bufObj
->StorageFlags
= storageFlags
;
629 memcpy( bufObj
->Data
, data
, size
);
641 * Replace data in a subrange of buffer object. If the data range
642 * specified by \c size + \c offset extends beyond the end of the buffer or
643 * if \c data is \c NULL, no copy is performed.
645 * This is the default callback for \c dd_function_table::BufferSubData()
646 * Note that all GL error checking will have been done already.
648 * \param ctx GL context.
649 * \param offset Offset of the first byte to be modified.
650 * \param size Size, in bytes, of the data range.
651 * \param data Pointer to the data to store in the buffer object.
652 * \param bufObj Object to be used.
654 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
657 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
658 GLsizeiptr size
, const GLvoid
*data
,
659 struct gl_buffer_object
*bufObj
)
663 /* this should have been caught in _mesa_BufferSubData() */
664 assert(size
+ offset
<= bufObj
->Size
);
667 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
673 * Retrieve data from a subrange of buffer object. If the data range
674 * specified by \c size + \c offset extends beyond the end of the buffer or
675 * if \c data is \c NULL, no copy is performed.
677 * This is the default callback for \c dd_function_table::GetBufferSubData()
678 * Note that all GL error checking will have been done already.
680 * \param ctx GL context.
681 * \param target Buffer object target on which to operate.
682 * \param offset Offset of the first byte to be fetched.
683 * \param size Size, in bytes, of the data range.
684 * \param data Destination for data
685 * \param bufObj Object to be used.
687 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
690 buffer_get_subdata(struct gl_context
*ctx
, GLintptrARB offset
,
691 GLsizeiptrARB size
, GLvoid
*data
,
692 struct gl_buffer_object
*bufObj
)
696 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
697 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
703 * Clear a subrange of the buffer object with copies of the supplied data.
704 * If data is NULL the buffer is filled with zeros.
706 * This is the default callback for \c dd_function_table::ClearBufferSubData()
707 * Note that all GL error checking will have been done already.
709 * \param ctx GL context.
710 * \param offset Offset of the first byte to be cleared.
711 * \param size Size, in bytes, of the to be cleared range.
712 * \param clearValue Source of the data.
713 * \param clearValueSize Size, in bytes, of the supplied data.
714 * \param bufObj Object to be cleared.
716 * \sa glClearBufferSubData, glClearBufferData and
717 * dd_function_table::ClearBufferSubData.
720 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
721 GLintptr offset
, GLsizeiptr size
,
722 const GLvoid
*clearValue
,
723 GLsizeiptr clearValueSize
,
724 struct gl_buffer_object
*bufObj
)
729 assert(ctx
->Driver
.MapBufferRange
);
730 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
732 GL_MAP_INVALIDATE_RANGE_BIT
,
733 bufObj
, MAP_INTERNAL
);
736 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
740 if (clearValue
== NULL
) {
741 /* Clear with zeros, per the spec */
742 memset(dest
, 0, size
);
743 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
747 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
748 memcpy(dest
, clearValue
, clearValueSize
);
749 dest
+= clearValueSize
;
752 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
757 * Default fallback for \c dd_function_table::MapBufferRange().
758 * Called via glMapBufferRange().
761 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
762 GLsizeiptr length
, GLbitfield access
,
763 struct gl_buffer_object
*bufObj
,
764 gl_map_buffer_index index
)
767 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
768 /* Just return a direct pointer to the data */
769 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
770 bufObj
->Mappings
[index
].Length
= length
;
771 bufObj
->Mappings
[index
].Offset
= offset
;
772 bufObj
->Mappings
[index
].AccessFlags
= access
;
773 return bufObj
->Mappings
[index
].Pointer
;
778 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
779 * Called via glFlushMappedBufferRange().
782 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
783 GLintptr offset
, GLsizeiptr length
,
784 struct gl_buffer_object
*obj
,
785 gl_map_buffer_index index
)
797 * Default callback for \c dd_function_table::UnmapBuffer().
799 * The input parameters will have been already tested for errors.
801 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
804 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
805 gl_map_buffer_index index
)
808 /* XXX we might assert here that bufObj->Pointer is non-null */
809 bufObj
->Mappings
[index
].Pointer
= NULL
;
810 bufObj
->Mappings
[index
].Length
= 0;
811 bufObj
->Mappings
[index
].Offset
= 0;
812 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
818 * Default fallback for \c dd_function_table::CopyBufferSubData().
819 * Called via glCopyBufferSubData().
822 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
823 struct gl_buffer_object
*src
,
824 struct gl_buffer_object
*dst
,
825 GLintptr readOffset
, GLintptr writeOffset
,
828 GLubyte
*srcPtr
, *dstPtr
;
831 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
833 GL_MAP_WRITE_BIT
, src
,
839 srcPtr
+= readOffset
;
840 dstPtr
+= writeOffset
;
842 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
843 GL_MAP_READ_BIT
, src
,
845 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
847 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
851 /* Note: the src and dst regions will never overlap. Trying to do so
852 * would generate GL_INVALID_VALUE earlier.
854 if (srcPtr
&& dstPtr
)
855 memcpy(dstPtr
, srcPtr
, size
);
857 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
859 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
865 * Initialize the state associated with buffer objects
868 _mesa_init_buffer_objects( struct gl_context
*ctx
)
872 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
873 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
874 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
876 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
877 ctx
->Shared
->NullBufferObj
);
879 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
880 ctx
->Shared
->NullBufferObj
);
881 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
882 ctx
->Shared
->NullBufferObj
);
884 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
885 ctx
->Shared
->NullBufferObj
);
887 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
888 ctx
->Shared
->NullBufferObj
);
890 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
891 ctx
->Shared
->NullBufferObj
);
893 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
894 ctx
->Shared
->NullBufferObj
);
896 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
897 ctx
->Shared
->NullBufferObj
);
899 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
900 ctx
->Shared
->NullBufferObj
);
902 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
903 ctx
->Shared
->NullBufferObj
);
905 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
906 _mesa_reference_buffer_object(ctx
,
907 &ctx
->UniformBufferBindings
[i
].BufferObject
,
908 ctx
->Shared
->NullBufferObj
);
909 ctx
->UniformBufferBindings
[i
].Offset
= -1;
910 ctx
->UniformBufferBindings
[i
].Size
= -1;
913 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
914 _mesa_reference_buffer_object(ctx
,
915 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
916 ctx
->Shared
->NullBufferObj
);
917 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
918 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
921 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
922 _mesa_reference_buffer_object(ctx
,
923 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
924 ctx
->Shared
->NullBufferObj
);
925 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
926 ctx
->AtomicBufferBindings
[i
].Size
= 0;
932 _mesa_free_buffer_objects( struct gl_context
*ctx
)
936 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
938 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
939 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
941 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
943 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
945 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
947 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
949 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
951 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
953 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
955 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
956 _mesa_reference_buffer_object(ctx
,
957 &ctx
->UniformBufferBindings
[i
].BufferObject
,
961 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
962 _mesa_reference_buffer_object(ctx
,
963 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
967 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
968 _mesa_reference_buffer_object(ctx
,
969 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
976 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
978 struct gl_buffer_object
**buf_handle
,
981 struct gl_buffer_object
*buf
= *buf_handle
;
983 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
984 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
988 if (!buf
|| buf
== &DummyBufferObject
) {
989 /* If this is a new buffer object id, or one which was generated but
990 * never used before, allocate a buffer object now.
992 assert(ctx
->Driver
.NewBufferObject
);
993 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
995 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
998 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1006 * Bind the specified target to buffer for the specified context.
1007 * Called by glBindBuffer() and other functions.
1010 bind_buffer_object(struct gl_context
*ctx
,
1011 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1013 struct gl_buffer_object
*oldBufObj
;
1014 struct gl_buffer_object
*newBufObj
= NULL
;
1018 /* Get pointer to old buffer object (to be unbound) */
1019 oldBufObj
= *bindTarget
;
1020 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1021 return; /* rebinding the same buffer object- no change */
1024 * Get pointer to new buffer object (newBufObj)
1027 /* The spec says there's not a buffer object named 0, but we use
1028 * one internally because it simplifies things.
1030 newBufObj
= ctx
->Shared
->NullBufferObj
;
1033 /* non-default buffer object */
1034 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1035 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1036 &newBufObj
, "glBindBuffer"))
1040 /* record usage history */
1041 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1042 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1045 /* bind new buffer */
1046 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1051 * Update the default buffer objects in the given context to reference those
1052 * specified in the shared state and release those referencing the old
1056 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1058 /* Bind the NullBufferObj to remove references to those
1059 * in the shared context hash table.
1061 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1062 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1063 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1064 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1070 * Return the gl_buffer_object for the given ID.
1071 * Always return NULL for ID 0.
1073 struct gl_buffer_object
*
1074 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1079 return (struct gl_buffer_object
*)
1080 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1084 struct gl_buffer_object
*
1085 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1090 return (struct gl_buffer_object
*)
1091 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1095 * A convenience function for direct state access functions that throws
1096 * GL_INVALID_OPERATION if buffer is not the name of an existing
1099 struct gl_buffer_object
*
1100 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1103 struct gl_buffer_object
*bufObj
;
1105 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1106 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1107 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1108 "%s(non-existent buffer object %u)", caller
, buffer
);
1117 * Look up a buffer object for a multi-bind function.
1119 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1120 * of generating an error if the buffer ID is not zero or the name
1121 * of an existing buffer object.
1123 * If the buffer ID refers to an existing buffer object, a pointer
1124 * to the buffer object is returned. If the ID is zero, a pointer
1125 * to the shared NullBufferObj is returned. If the ID is not zero
1126 * and does not refer to a valid buffer object, this function
1129 * This function assumes that the caller has already locked the
1130 * hash table mutex by calling
1131 * _mesa_HashLockMutex(ctx->Shared->BufferObjects).
1133 struct gl_buffer_object
*
1134 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1135 const GLuint
*buffers
,
1136 GLuint index
, const char *caller
)
1138 struct gl_buffer_object
*bufObj
;
1140 if (buffers
[index
] != 0) {
1141 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1143 /* The multi-bind functions don't create the buffer objects
1144 when they don't exist. */
1145 if (bufObj
== &DummyBufferObject
)
1148 bufObj
= ctx
->Shared
->NullBufferObj
;
1151 /* The ARB_multi_bind spec says:
1153 * "An INVALID_OPERATION error is generated if any value
1154 * in <buffers> is not zero or the name of an existing
1155 * buffer object (per binding)."
1157 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1158 "%s(buffers[%u]=%u is not zero or the name "
1159 "of an existing buffer object)",
1160 caller
, index
, buffers
[index
]);
1168 * If *ptr points to obj, set ptr = the Null/default buffer object.
1169 * This is a helper for buffer object deletion.
1170 * The GL spec says that deleting a buffer object causes it to get
1171 * unbound from all arrays in the current context.
1174 unbind(struct gl_context
*ctx
,
1175 struct gl_vertex_array_object
*vao
, unsigned index
,
1176 struct gl_buffer_object
*obj
)
1178 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1179 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1180 vao
->BufferBinding
[index
].Offset
,
1181 vao
->BufferBinding
[index
].Stride
);
1187 * Plug default/fallback buffer object functions into the device
1191 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1193 /* GL_ARB_vertex/pixel_buffer_object */
1194 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1195 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1196 driver
->BufferData
= buffer_data_fallback
;
1197 driver
->BufferSubData
= buffer_sub_data_fallback
;
1198 driver
->GetBufferSubData
= buffer_get_subdata
;
1199 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1201 /* GL_ARB_clear_buffer_object */
1202 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1204 /* GL_ARB_map_buffer_range */
1205 driver
->MapBufferRange
= map_buffer_range_fallback
;
1206 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1208 /* GL_ARB_copy_buffer */
1209 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1214 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1215 struct gl_buffer_object
*bufObj
)
1217 for (int i
= 0; i
< MAP_COUNT
; i
++) {
1218 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1219 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1220 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1221 bufObj
->Mappings
[i
].AccessFlags
= 0;
1227 /**********************************************************************/
1229 /**********************************************************************/
1232 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1234 GET_CURRENT_CONTEXT(ctx
);
1236 if (MESA_VERBOSE
& VERBOSE_API
) {
1237 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1238 _mesa_enum_to_string(target
), buffer
);
1241 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1243 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1244 _mesa_enum_to_string(target
));
1248 bind_buffer_object(ctx
, bindTarget
, buffer
);
1253 * Delete a set of buffer objects.
1255 * \param n Number of buffer objects to delete.
1256 * \param ids Array of \c n buffer object IDs.
1259 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1261 GET_CURRENT_CONTEXT(ctx
);
1263 FLUSH_VERTICES(ctx
, 0);
1266 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1270 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1272 for (i
= 0; i
< n
; i
++) {
1273 struct gl_buffer_object
*bufObj
=
1274 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1276 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1279 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1281 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1283 /* unbind any vertex pointers bound to this buffer */
1284 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1285 unbind(ctx
, vao
, j
, bufObj
);
1288 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1289 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1291 if (vao
->IndexBufferObj
== bufObj
) {
1292 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1295 /* unbind ARB_draw_indirect binding point */
1296 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1297 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1300 /* unbind ARB_indirect_parameters binding point */
1301 if (ctx
->ParameterBuffer
== bufObj
) {
1302 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1305 /* unbind ARB_compute_shader binding point */
1306 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1307 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1310 /* unbind ARB_copy_buffer binding points */
1311 if (ctx
->CopyReadBuffer
== bufObj
) {
1312 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1314 if (ctx
->CopyWriteBuffer
== bufObj
) {
1315 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1318 /* unbind transform feedback binding points */
1319 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1320 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1322 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1323 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1324 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1328 /* unbind UBO binding points */
1329 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1330 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1331 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1335 if (ctx
->UniformBuffer
== bufObj
) {
1336 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1339 /* unbind SSBO binding points */
1340 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1341 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1342 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1346 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1347 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1350 /* unbind Atomci Buffer binding points */
1351 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1352 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1353 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1357 if (ctx
->AtomicBuffer
== bufObj
) {
1358 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1361 /* unbind any pixel pack/unpack pointers bound to this buffer */
1362 if (ctx
->Pack
.BufferObj
== bufObj
) {
1363 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1365 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1366 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1369 if (ctx
->Texture
.BufferObject
== bufObj
) {
1370 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1373 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1374 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1377 /* unbind query buffer binding point */
1378 if (ctx
->QueryBuffer
== bufObj
) {
1379 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1382 /* The ID is immediately freed for re-use */
1383 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1384 /* Make sure we do not run into the classic ABA problem on bind.
1385 * We don't want to allow re-binding a buffer object that's been
1386 * "deleted" by glDeleteBuffers().
1388 * The explicit rebinding to the default object in the current context
1389 * prevents the above in the current context, but another context
1390 * sharing the same objects might suffer from this problem.
1391 * The alternative would be to do the hash lookup in any case on bind
1392 * which would introduce more runtime overhead than this.
1394 bufObj
->DeletePending
= GL_TRUE
;
1395 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1399 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1404 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1405 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1409 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1411 GET_CURRENT_CONTEXT(ctx
);
1413 struct gl_buffer_object
*buf
;
1415 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1417 if (MESA_VERBOSE
& VERBOSE_API
)
1418 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1421 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1430 * This must be atomic (generation and allocation of buffer object IDs)
1432 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1434 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1436 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1437 * DummyBufferObject. Otherwise, create a new buffer object and insert
1440 for (int i
= 0; i
< n
; i
++) {
1441 buffers
[i
] = first
+ i
;
1443 assert(ctx
->Driver
.NewBufferObject
);
1444 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1446 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1447 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1452 buf
= &DummyBufferObject
;
1454 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1457 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1461 * Generate a set of unique buffer object IDs and store them in \c buffers.
1463 * \param n Number of IDs to generate.
1464 * \param buffers Array of \c n locations to store the IDs.
1467 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1469 create_buffers(n
, buffers
, false);
1473 * Create a set of buffer objects and store their unique IDs in \c buffers.
1475 * \param n Number of IDs to generate.
1476 * \param buffers Array of \c n locations to store the IDs.
1479 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1481 create_buffers(n
, buffers
, true);
1486 * Determine if ID is the name of a buffer object.
1488 * \param id ID of the potential buffer object.
1489 * \return \c GL_TRUE if \c id is the name of a buffer object,
1490 * \c GL_FALSE otherwise.
1492 GLboolean GLAPIENTRY
1493 _mesa_IsBuffer(GLuint id
)
1495 struct gl_buffer_object
*bufObj
;
1496 GET_CURRENT_CONTEXT(ctx
);
1497 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1499 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1501 return bufObj
&& bufObj
!= &DummyBufferObject
;
1506 validate_buffer_storage(struct gl_context
*ctx
,
1507 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1508 GLbitfield flags
, const char *func
)
1511 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1515 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1517 GL_MAP_PERSISTENT_BIT
|
1518 GL_MAP_COHERENT_BIT
|
1519 GL_DYNAMIC_STORAGE_BIT
|
1520 GL_CLIENT_STORAGE_BIT
;
1522 if (ctx
->Extensions
.ARB_sparse_buffer
)
1523 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1525 if (flags
& ~valid_flags
) {
1526 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1530 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1532 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1533 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1534 * MAP_READ_BIT or MAP_WRITE_BIT."
1536 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1537 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1538 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1542 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1543 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1544 _mesa_error(ctx
, GL_INVALID_VALUE
,
1545 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1549 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1550 _mesa_error(ctx
, GL_INVALID_VALUE
,
1551 "%s(COHERENT and flags!=PERSISTENT)", func
);
1555 if (bufObj
->Immutable
) {
1556 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1565 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1566 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1567 GLbitfield flags
, const char *func
)
1569 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1570 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1572 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1574 bufObj
->Written
= GL_TRUE
;
1575 bufObj
->Immutable
= GL_TRUE
;
1576 bufObj
->MinMaxCacheDirty
= true;
1578 assert(ctx
->Driver
.BufferData
);
1579 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1581 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1582 /* Even though the interaction between AMD_pinned_memory and
1583 * glBufferStorage is not described in the spec, Graham Sellers
1584 * said that it should behave the same as glBufferData.
1586 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1589 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1595 static ALWAYS_INLINE
void
1596 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1597 const GLvoid
*data
, GLbitfield flags
, bool dsa
,
1598 bool no_error
, const char *func
)
1600 GET_CURRENT_CONTEXT(ctx
);
1601 struct gl_buffer_object
*bufObj
;
1605 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1607 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1613 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1614 bufObj
= *bufObjPtr
;
1616 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1622 if (no_error
|| validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1623 buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
, func
);
1628 _mesa_BufferStorage_no_error(GLenum target
, GLsizeiptr size
,
1629 const GLvoid
*data
, GLbitfield flags
)
1631 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, true,
1637 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1640 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, false,
1646 _mesa_NamedBufferStorage_no_error(GLuint buffer
, GLsizeiptr size
,
1647 const GLvoid
*data
, GLbitfield flags
)
1649 /* In direct state access, buffer objects have an unspecified target
1650 * since they are not required to be bound.
1652 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, true,
1653 "glNamedBufferStorage");
1658 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1661 /* In direct state access, buffer objects have an unspecified target
1662 * since they are not required to be bound.
1664 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, false,
1665 "glNamedBufferStorage");
1670 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1671 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1672 GLenum usage
, const char *func
)
1676 if (MESA_VERBOSE
& VERBOSE_API
) {
1677 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1679 _mesa_enum_to_string(target
),
1680 (long int) size
, data
,
1681 _mesa_enum_to_string(usage
));
1685 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1690 case GL_STREAM_DRAW_ARB
:
1691 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1694 case GL_STATIC_DRAW_ARB
:
1695 case GL_DYNAMIC_DRAW_ARB
:
1699 case GL_STREAM_READ_ARB
:
1700 case GL_STREAM_COPY_ARB
:
1701 case GL_STATIC_READ_ARB
:
1702 case GL_STATIC_COPY_ARB
:
1703 case GL_DYNAMIC_READ_ARB
:
1704 case GL_DYNAMIC_COPY_ARB
:
1705 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1709 valid_usage
= false;
1714 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1715 _mesa_enum_to_string(usage
));
1719 if (bufObj
->Immutable
) {
1720 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1724 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1725 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1727 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1729 bufObj
->Written
= GL_TRUE
;
1730 bufObj
->MinMaxCacheDirty
= true;
1733 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1734 bufObj
->Name
, size
, data
, usage
);
1741 assert(ctx
->Driver
.BufferData
);
1742 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1745 GL_DYNAMIC_STORAGE_BIT
,
1747 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1748 /* From GL_AMD_pinned_memory:
1750 * INVALID_OPERATION is generated by BufferData if <target> is
1751 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1752 * mapped to the GPU address space.
1754 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1757 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1763 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1764 const GLvoid
*data
, GLenum usage
)
1766 GET_CURRENT_CONTEXT(ctx
);
1767 struct gl_buffer_object
*bufObj
;
1769 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1773 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1778 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1781 GET_CURRENT_CONTEXT(ctx
);
1782 struct gl_buffer_object
*bufObj
;
1784 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1788 /* In direct state access, buffer objects have an unspecified target since
1789 * they are not required to be bound.
1791 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1792 "glNamedBufferData");
1797 validate_buffer_sub_data(struct gl_context
*ctx
,
1798 struct gl_buffer_object
*bufObj
,
1799 GLintptr offset
, GLsizeiptr size
,
1802 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1804 /* error already recorded */
1808 if (bufObj
->Immutable
&&
1809 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1810 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1814 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1815 bufObj
->Usage
== GL_STATIC_COPY
) &&
1816 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
- 1) {
1817 /* If the application declared the buffer as static draw/copy or stream
1818 * draw, it should not be frequently modified with glBufferSubData.
1820 BUFFER_USAGE_WARNING(ctx
,
1821 "using %s(buffer %u, offset %u, size %u) to "
1822 "update a %s buffer",
1823 func
, bufObj
->Name
, offset
, size
,
1824 _mesa_enum_to_string(bufObj
->Usage
));
1832 * Implementation for glBufferSubData and glNamedBufferSubData.
1834 * \param ctx GL context.
1835 * \param bufObj The buffer object.
1836 * \param offset Offset of the first byte of the subdata range.
1837 * \param size Size, in bytes, of the subdata range.
1838 * \param data The data store.
1839 * \param func Name of calling function for recording errors.
1843 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1844 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
)
1849 bufObj
->NumSubDataCalls
++;
1850 bufObj
->Written
= GL_TRUE
;
1851 bufObj
->MinMaxCacheDirty
= true;
1853 assert(ctx
->Driver
.BufferSubData
);
1854 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1858 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1859 GLsizeiptr size
, const GLvoid
*data
)
1861 GET_CURRENT_CONTEXT(ctx
);
1862 struct gl_buffer_object
*bufObj
;
1863 const char *func
= "glBufferSubData";
1865 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1869 if (validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
1870 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
1874 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1875 GLsizeiptr size
, const GLvoid
*data
)
1877 GET_CURRENT_CONTEXT(ctx
);
1878 struct gl_buffer_object
*bufObj
;
1879 const char *func
= "glNamedBufferSubData";
1881 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1885 if (validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
1886 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
1891 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1892 GLsizeiptr size
, GLvoid
*data
)
1894 GET_CURRENT_CONTEXT(ctx
);
1895 struct gl_buffer_object
*bufObj
;
1897 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1898 GL_INVALID_OPERATION
);
1902 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1903 "glGetBufferSubData")) {
1907 assert(ctx
->Driver
.GetBufferSubData
);
1908 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1912 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1913 GLsizeiptr size
, GLvoid
*data
)
1915 GET_CURRENT_CONTEXT(ctx
);
1916 struct gl_buffer_object
*bufObj
;
1918 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1919 "glGetNamedBufferSubData");
1923 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1924 "glGetNamedBufferSubData")) {
1928 assert(ctx
->Driver
.GetBufferSubData
);
1929 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1934 * \param subdata true if caller is *SubData, false if *Data
1937 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1938 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
1939 GLenum format
, GLenum type
, const GLvoid
*data
,
1940 const char *func
, bool subdata
)
1942 mesa_format mesaFormat
;
1943 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1944 GLsizeiptr clearValueSize
;
1946 /* This checks for disallowed mappings. */
1947 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1952 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1953 format
, type
, func
);
1955 if (mesaFormat
== MESA_FORMAT_NONE
) {
1959 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1960 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1961 _mesa_error(ctx
, GL_INVALID_VALUE
,
1962 "%s(offset or size is not a multiple of "
1963 "internalformat size)", func
);
1967 /* Bail early. Negative size has already been checked. */
1971 bufObj
->MinMaxCacheDirty
= true;
1974 /* clear to zeros, per the spec */
1975 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1976 NULL
, clearValueSize
, bufObj
);
1980 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1981 format
, type
, data
, func
)) {
1985 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1986 clearValue
, clearValueSize
, bufObj
);
1990 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1991 GLenum type
, const GLvoid
*data
)
1993 GET_CURRENT_CONTEXT(ctx
);
1994 struct gl_buffer_object
*bufObj
;
1996 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2000 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2001 format
, type
, data
, "glClearBufferData", false);
2005 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2006 GLenum format
, GLenum type
, const GLvoid
*data
)
2008 GET_CURRENT_CONTEXT(ctx
);
2009 struct gl_buffer_object
*bufObj
;
2011 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2015 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2016 format
, type
, data
, "glClearNamedBufferData", false);
2021 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2022 GLintptr offset
, GLsizeiptr size
,
2023 GLenum format
, GLenum type
,
2026 GET_CURRENT_CONTEXT(ctx
);
2027 struct gl_buffer_object
*bufObj
;
2029 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2033 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2034 format
, type
, data
, "glClearBufferSubData", true);
2038 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2039 GLintptr offset
, GLsizeiptr size
,
2040 GLenum format
, GLenum type
,
2043 GET_CURRENT_CONTEXT(ctx
);
2044 struct gl_buffer_object
*bufObj
;
2046 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2047 "glClearNamedBufferSubData");
2051 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2052 type
, data
, "glClearNamedBufferSubData", true);
2056 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2058 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2059 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2060 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2061 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2062 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2068 validate_and_unmap_buffer(struct gl_context
*ctx
,
2069 struct gl_buffer_object
*bufObj
,
2072 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2074 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2075 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2076 "%s(buffer is not mapped)", func
);
2081 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2082 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2084 /* check that last 100 bytes are still = magic value */
2085 for (i
= 0; i
< 100; i
++) {
2086 GLuint pos
= bufObj
->Size
- i
- 1;
2087 if (buf
[pos
] != 123) {
2088 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2089 " at position %d (value = %u)\n",
2097 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2098 GLuint i
, unchanged
= 0;
2099 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2101 /* check which bytes changed */
2102 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2103 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2110 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2111 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2116 return unmap_buffer(ctx
, bufObj
);
2119 GLboolean GLAPIENTRY
2120 _mesa_UnmapBuffer_no_error(GLenum target
)
2122 GET_CURRENT_CONTEXT(ctx
);
2123 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2124 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2126 return unmap_buffer(ctx
, bufObj
);
2129 GLboolean GLAPIENTRY
2130 _mesa_UnmapBuffer(GLenum target
)
2132 GET_CURRENT_CONTEXT(ctx
);
2133 struct gl_buffer_object
*bufObj
;
2135 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2139 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2142 GLboolean GLAPIENTRY
2143 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2145 GET_CURRENT_CONTEXT(ctx
);
2146 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2148 return unmap_buffer(ctx
, bufObj
);
2151 GLboolean GLAPIENTRY
2152 _mesa_UnmapNamedBuffer(GLuint buffer
)
2154 GET_CURRENT_CONTEXT(ctx
);
2155 struct gl_buffer_object
*bufObj
;
2157 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2161 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2166 get_buffer_parameter(struct gl_context
*ctx
,
2167 struct gl_buffer_object
*bufObj
, GLenum pname
,
2168 GLint64
*params
, const char *func
)
2171 case GL_BUFFER_SIZE_ARB
:
2172 *params
= bufObj
->Size
;
2174 case GL_BUFFER_USAGE_ARB
:
2175 *params
= bufObj
->Usage
;
2177 case GL_BUFFER_ACCESS_ARB
:
2178 *params
= simplified_access_mode(ctx
,
2179 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2181 case GL_BUFFER_MAPPED_ARB
:
2182 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2184 case GL_BUFFER_ACCESS_FLAGS
:
2185 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2187 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2189 case GL_BUFFER_MAP_OFFSET
:
2190 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2192 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2194 case GL_BUFFER_MAP_LENGTH
:
2195 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2197 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2199 case GL_BUFFER_IMMUTABLE_STORAGE
:
2200 if (!ctx
->Extensions
.ARB_buffer_storage
)
2202 *params
= bufObj
->Immutable
;
2204 case GL_BUFFER_STORAGE_FLAGS
:
2205 if (!ctx
->Extensions
.ARB_buffer_storage
)
2207 *params
= bufObj
->StorageFlags
;
2216 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2217 _mesa_enum_to_string(pname
));
2222 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2224 GET_CURRENT_CONTEXT(ctx
);
2225 struct gl_buffer_object
*bufObj
;
2228 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2229 GL_INVALID_OPERATION
);
2233 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2234 "glGetBufferParameteriv"))
2235 return; /* Error already recorded. */
2237 *params
= (GLint
) parameter
;
2241 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2243 GET_CURRENT_CONTEXT(ctx
);
2244 struct gl_buffer_object
*bufObj
;
2247 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2248 GL_INVALID_OPERATION
);
2252 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2253 "glGetBufferParameteri64v"))
2254 return; /* Error already recorded. */
2256 *params
= parameter
;
2260 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2262 GET_CURRENT_CONTEXT(ctx
);
2263 struct gl_buffer_object
*bufObj
;
2266 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2267 "glGetNamedBufferParameteriv");
2271 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2272 "glGetNamedBufferParameteriv"))
2273 return; /* Error already recorded. */
2275 *params
= (GLint
) parameter
;
2279 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2282 GET_CURRENT_CONTEXT(ctx
);
2283 struct gl_buffer_object
*bufObj
;
2286 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2287 "glGetNamedBufferParameteri64v");
2291 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2292 "glGetNamedBufferParameteri64v"))
2293 return; /* Error already recorded. */
2295 *params
= parameter
;
2300 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2302 GET_CURRENT_CONTEXT(ctx
);
2303 struct gl_buffer_object
*bufObj
;
2305 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2306 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2307 "GL_BUFFER_MAP_POINTER)");
2311 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2312 GL_INVALID_OPERATION
);
2316 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2320 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2322 GET_CURRENT_CONTEXT(ctx
);
2323 struct gl_buffer_object
*bufObj
;
2325 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2326 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2327 "GL_BUFFER_MAP_POINTER)");
2331 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2332 "glGetNamedBufferPointerv");
2336 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2341 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2342 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2343 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2345 if (_mesa_check_disallowed_mapping(src
)) {
2346 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2347 "%s(readBuffer is mapped)", func
);
2351 if (_mesa_check_disallowed_mapping(dst
)) {
2352 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2353 "%s(writeBuffer is mapped)", func
);
2357 if (readOffset
< 0) {
2358 _mesa_error(ctx
, GL_INVALID_VALUE
,
2359 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2363 if (writeOffset
< 0) {
2364 _mesa_error(ctx
, GL_INVALID_VALUE
,
2365 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2370 _mesa_error(ctx
, GL_INVALID_VALUE
,
2371 "%s(size %d < 0)", func
, (int) size
);
2375 if (readOffset
+ size
> src
->Size
) {
2376 _mesa_error(ctx
, GL_INVALID_VALUE
,
2377 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2378 (int) readOffset
, (int) size
, (int) src
->Size
);
2382 if (writeOffset
+ size
> dst
->Size
) {
2383 _mesa_error(ctx
, GL_INVALID_VALUE
,
2384 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2385 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2390 if (readOffset
+ size
<= writeOffset
) {
2393 else if (writeOffset
+ size
<= readOffset
) {
2397 /* overlapping src/dst is illegal */
2398 _mesa_error(ctx
, GL_INVALID_VALUE
,
2399 "%s(overlapping src/dst)", func
);
2404 dst
->MinMaxCacheDirty
= true;
2406 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2410 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2411 GLintptr readOffset
, GLintptr writeOffset
,
2414 GET_CURRENT_CONTEXT(ctx
);
2416 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2417 struct gl_buffer_object
*src
= *src_ptr
;
2419 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2420 struct gl_buffer_object
*dst
= *dst_ptr
;
2422 dst
->MinMaxCacheDirty
= true;
2423 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2428 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2429 GLintptr readOffset
, GLintptr writeOffset
,
2432 GET_CURRENT_CONTEXT(ctx
);
2433 struct gl_buffer_object
*src
, *dst
;
2435 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2436 GL_INVALID_OPERATION
);
2440 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2441 GL_INVALID_OPERATION
);
2445 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2446 "glCopyBufferSubData");
2450 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2451 GLintptr readOffset
,
2452 GLintptr writeOffset
, GLsizeiptr size
)
2454 GET_CURRENT_CONTEXT(ctx
);
2456 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2457 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2459 dst
->MinMaxCacheDirty
= true;
2460 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2465 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2466 GLintptr readOffset
, GLintptr writeOffset
,
2469 GET_CURRENT_CONTEXT(ctx
);
2470 struct gl_buffer_object
*src
, *dst
;
2472 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2473 "glCopyNamedBufferSubData");
2477 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2478 "glCopyNamedBufferSubData");
2482 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2483 "glCopyNamedBufferSubData");
2487 validate_map_buffer_range(struct gl_context
*ctx
,
2488 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2489 GLsizeiptr length
, GLbitfield access
,
2492 GLbitfield allowed_access
;
2494 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2497 _mesa_error(ctx
, GL_INVALID_VALUE
,
2498 "%s(offset %ld < 0)", func
, (long) offset
);
2503 _mesa_error(ctx
, GL_INVALID_VALUE
,
2504 "%s(length %ld < 0)", func
, (long) length
);
2508 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2510 * "An INVALID_OPERATION error is generated for any of the following
2513 * * <length> is zero."
2515 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2516 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2520 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2524 allowed_access
= GL_MAP_READ_BIT
|
2526 GL_MAP_INVALIDATE_RANGE_BIT
|
2527 GL_MAP_INVALIDATE_BUFFER_BIT
|
2528 GL_MAP_FLUSH_EXPLICIT_BIT
|
2529 GL_MAP_UNSYNCHRONIZED_BIT
;
2531 if (ctx
->Extensions
.ARB_buffer_storage
) {
2532 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2533 GL_MAP_COHERENT_BIT
;
2536 if (access
& ~allowed_access
) {
2537 /* generate an error if any bits other than those allowed are set */
2538 _mesa_error(ctx
, GL_INVALID_VALUE
,
2539 "%s(access has undefined bits set)", func
);
2543 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2544 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2545 "%s(access indicates neither read or write)", func
);
2549 if ((access
& GL_MAP_READ_BIT
) &&
2550 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2551 GL_MAP_INVALIDATE_BUFFER_BIT
|
2552 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2553 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2554 "%s(read access with disallowed bits)", func
);
2558 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2559 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2560 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2561 "%s(access has flush explicit without write)", func
);
2565 if (access
& GL_MAP_READ_BIT
&&
2566 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2567 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2568 "%s(buffer does not allow read access)", func
);
2572 if (access
& GL_MAP_WRITE_BIT
&&
2573 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2574 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2575 "%s(buffer does not allow write access)", func
);
2579 if (access
& GL_MAP_COHERENT_BIT
&&
2580 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2581 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2582 "%s(buffer does not allow coherent access)", func
);
2586 if (access
& GL_MAP_PERSISTENT_BIT
&&
2587 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2588 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2589 "%s(buffer does not allow persistent access)", func
);
2593 if (offset
+ length
> bufObj
->Size
) {
2594 _mesa_error(ctx
, GL_INVALID_VALUE
,
2595 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2596 (unsigned long) offset
, (unsigned long) length
,
2597 (unsigned long) bufObj
->Size
);
2601 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2602 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2603 "%s(buffer already mapped)", func
);
2607 if (access
& GL_MAP_WRITE_BIT
) {
2608 bufObj
->NumMapBufferWriteCalls
++;
2609 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2610 bufObj
->Usage
== GL_STATIC_COPY
) &&
2611 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2612 BUFFER_USAGE_WARNING(ctx
,
2613 "using %s(buffer %u, offset %u, length %u) to "
2614 "update a %s buffer",
2615 func
, bufObj
->Name
, offset
, length
,
2616 _mesa_enum_to_string(bufObj
->Usage
));
2624 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2625 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2628 if (!bufObj
->Size
) {
2629 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2633 assert(ctx
->Driver
.MapBufferRange
);
2634 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2637 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2640 /* The driver callback should have set all these fields.
2641 * This is important because other modules (like VBO) might call
2642 * the driver function directly.
2644 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2645 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2646 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2647 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2650 if (access
& GL_MAP_WRITE_BIT
) {
2651 bufObj
->Written
= GL_TRUE
;
2652 bufObj
->MinMaxCacheDirty
= true;
2656 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2657 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2658 bufObj
->Name
, bufObj
->Size
, access
);
2659 /* Access must be write only */
2660 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2662 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2663 for (i
= 0; i
< bufObj
->Size
; i
++)
2670 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2671 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2673 /* buffer is 100 bytes larger than requested, fill with magic value */
2674 for (i
= 0; i
< 100; i
++) {
2675 buf
[bufObj
->Size
- i
- 1] = 123;
2684 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
2685 GLsizeiptr length
, GLbitfield access
)
2687 GET_CURRENT_CONTEXT(ctx
);
2689 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2690 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2692 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2693 "glMapBufferRange");
2697 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2700 GET_CURRENT_CONTEXT(ctx
);
2701 struct gl_buffer_object
*bufObj
;
2703 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2704 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2705 "glMapBufferRange(ARB_map_buffer_range not supported)");
2709 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2713 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2714 "glMapBufferRange"))
2717 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2718 "glMapBufferRange");
2722 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2723 GLsizeiptr length
, GLbitfield access
)
2725 GET_CURRENT_CONTEXT(ctx
);
2726 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2728 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2729 "glMapNamedBufferRange");
2733 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2736 GET_CURRENT_CONTEXT(ctx
);
2737 struct gl_buffer_object
*bufObj
;
2739 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2740 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2741 "glMapNamedBufferRange("
2742 "ARB_map_buffer_range not supported)");
2746 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2750 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2751 "glMapNamedBufferRange"))
2754 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2755 "glMapNamedBufferRange");
2759 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2760 * flags for input to map_buffer_range.
2762 * \return true if the type of requested access is permissible.
2765 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2769 case GL_READ_ONLY_ARB
:
2770 *flags
= GL_MAP_READ_BIT
;
2771 return _mesa_is_desktop_gl(ctx
);
2772 case GL_WRITE_ONLY_ARB
:
2773 *flags
= GL_MAP_WRITE_BIT
;
2775 case GL_READ_WRITE_ARB
:
2776 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2777 return _mesa_is_desktop_gl(ctx
);
2784 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
2786 GET_CURRENT_CONTEXT(ctx
);
2788 GLbitfield accessFlags
;
2789 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2791 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2792 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2794 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2799 _mesa_MapBuffer(GLenum target
, GLenum access
)
2801 GET_CURRENT_CONTEXT(ctx
);
2802 struct gl_buffer_object
*bufObj
;
2803 GLbitfield accessFlags
;
2805 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2806 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2810 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2814 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2818 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2823 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
2825 GET_CURRENT_CONTEXT(ctx
);
2827 GLbitfield accessFlags
;
2828 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2830 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2832 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2833 "glMapNamedBuffer");
2837 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2839 GET_CURRENT_CONTEXT(ctx
);
2840 struct gl_buffer_object
*bufObj
;
2841 GLbitfield accessFlags
;
2843 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2844 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2848 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2852 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2853 "glMapNamedBuffer"))
2856 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2857 "glMapNamedBuffer");
2862 flush_mapped_buffer_range(struct gl_context
*ctx
,
2863 struct gl_buffer_object
*bufObj
,
2864 GLintptr offset
, GLsizeiptr length
,
2867 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2868 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2869 "%s(ARB_map_buffer_range not supported)", func
);
2874 _mesa_error(ctx
, GL_INVALID_VALUE
,
2875 "%s(offset %ld < 0)", func
, (long) offset
);
2880 _mesa_error(ctx
, GL_INVALID_VALUE
,
2881 "%s(length %ld < 0)", func
, (long) length
);
2885 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2886 /* buffer is not mapped */
2887 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2888 "%s(buffer is not mapped)", func
);
2892 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2893 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2894 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2895 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2899 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2900 _mesa_error(ctx
, GL_INVALID_VALUE
,
2901 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2902 (long) offset
, (long) length
,
2903 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2907 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2909 if (ctx
->Driver
.FlushMappedBufferRange
)
2910 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2915 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
2918 GET_CURRENT_CONTEXT(ctx
);
2919 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2920 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2922 if (ctx
->Driver
.FlushMappedBufferRange
)
2923 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2928 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2931 GET_CURRENT_CONTEXT(ctx
);
2932 struct gl_buffer_object
*bufObj
;
2934 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2935 GL_INVALID_OPERATION
);
2939 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2940 "glFlushMappedBufferRange");
2944 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2947 GET_CURRENT_CONTEXT(ctx
);
2948 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2950 if (ctx
->Driver
.FlushMappedBufferRange
)
2951 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2956 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2959 GET_CURRENT_CONTEXT(ctx
);
2960 struct gl_buffer_object
*bufObj
;
2962 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2963 "glFlushMappedNamedBufferRange");
2967 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2968 "glFlushMappedNamedBufferRange");
2973 * Binds a buffer object to a uniform buffer binding point.
2975 * The caller is responsible for flushing vertices and updating
2979 set_ubo_binding(struct gl_context
*ctx
,
2980 struct gl_uniform_buffer_binding
*binding
,
2981 struct gl_buffer_object
*bufObj
,
2986 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2988 binding
->Offset
= offset
;
2989 binding
->Size
= size
;
2990 binding
->AutomaticSize
= autoSize
;
2992 /* If this is a real buffer object, mark it has having been used
2993 * at some point as a UBO.
2996 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
3000 * Binds a buffer object to a shader storage buffer binding point.
3002 * The caller is responsible for flushing vertices and updating
3006 set_ssbo_binding(struct gl_context
*ctx
,
3007 struct gl_shader_storage_buffer_binding
*binding
,
3008 struct gl_buffer_object
*bufObj
,
3013 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3015 binding
->Offset
= offset
;
3016 binding
->Size
= size
;
3017 binding
->AutomaticSize
= autoSize
;
3019 /* If this is a real buffer object, mark it has having been used
3020 * at some point as a SSBO.
3023 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
3027 * Binds a buffer object to a uniform buffer binding point.
3029 * Unlike set_ubo_binding(), this function also flushes vertices
3030 * and updates NewDriverState. It also checks if the binding
3031 * has actually changed before updating it.
3034 bind_uniform_buffer(struct gl_context
*ctx
,
3036 struct gl_buffer_object
*bufObj
,
3041 struct gl_uniform_buffer_binding
*binding
=
3042 &ctx
->UniformBufferBindings
[index
];
3044 if (binding
->BufferObject
== bufObj
&&
3045 binding
->Offset
== offset
&&
3046 binding
->Size
== size
&&
3047 binding
->AutomaticSize
== autoSize
) {
3051 FLUSH_VERTICES(ctx
, 0);
3052 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3054 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3058 * Binds a buffer object to a shader storage buffer binding point.
3060 * Unlike set_ssbo_binding(), this function also flushes vertices
3061 * and updates NewDriverState. It also checks if the binding
3062 * has actually changed before updating it.
3065 bind_shader_storage_buffer(struct gl_context
*ctx
,
3067 struct gl_buffer_object
*bufObj
,
3072 struct gl_shader_storage_buffer_binding
*binding
=
3073 &ctx
->ShaderStorageBufferBindings
[index
];
3075 if (binding
->BufferObject
== bufObj
&&
3076 binding
->Offset
== offset
&&
3077 binding
->Size
== size
&&
3078 binding
->AutomaticSize
== autoSize
) {
3082 FLUSH_VERTICES(ctx
, 0);
3083 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3085 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3089 * Bind a region of a buffer object to a uniform block binding point.
3090 * \param index the uniform buffer binding point index
3091 * \param bufObj the buffer object
3092 * \param offset offset to the start of buffer object region
3093 * \param size size of the buffer object region
3096 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
3098 struct gl_buffer_object
*bufObj
,
3102 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3103 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3107 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3108 _mesa_error(ctx
, GL_INVALID_VALUE
,
3109 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3110 ctx
->Const
.UniformBufferOffsetAlignment
);
3114 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3119 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3120 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3124 * Bind a region of a buffer object to a shader storage block binding point.
3125 * \param index the shader storage buffer binding point index
3126 * \param bufObj the buffer object
3127 * \param offset offset to the start of buffer object region
3128 * \param size size of the buffer object region
3131 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3133 struct gl_buffer_object
*bufObj
,
3137 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3138 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3142 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3143 _mesa_error(ctx
, GL_INVALID_VALUE
,
3144 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3145 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3149 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3154 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3155 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3159 * Bind a buffer object to a uniform block binding point.
3160 * As above, but offset = 0.
3163 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
3165 struct gl_buffer_object
*bufObj
)
3167 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3168 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3172 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3174 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3175 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3177 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3181 * Bind a buffer object to a shader storage block binding point.
3182 * As above, but offset = 0.
3185 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
3187 struct gl_buffer_object
*bufObj
)
3189 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3190 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3194 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3196 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3197 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3199 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3203 * Binds a buffer object to an atomic buffer binding point.
3205 * The caller is responsible for validating the offset,
3206 * flushing the vertices and updating NewDriverState.
3209 set_atomic_buffer_binding(struct gl_context
*ctx
,
3210 struct gl_atomic_buffer_binding
*binding
,
3211 struct gl_buffer_object
*bufObj
,
3215 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3217 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3218 binding
->Offset
= 0;
3221 binding
->Offset
= offset
;
3222 binding
->Size
= size
;
3223 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3228 * Binds a buffer object to an atomic buffer binding point.
3230 * Unlike set_atomic_buffer_binding(), this function also validates the
3231 * index and offset, flushes vertices, and updates NewDriverState.
3232 * It also checks if the binding has actually changing before
3236 bind_atomic_buffer(struct gl_context
*ctx
,
3238 struct gl_buffer_object
*bufObj
,
3243 struct gl_atomic_buffer_binding
*binding
;
3245 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3246 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3250 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3251 _mesa_error(ctx
, GL_INVALID_VALUE
,
3252 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3253 ATOMIC_COUNTER_SIZE
);
3257 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3259 binding
= &ctx
->AtomicBufferBindings
[index
];
3260 if (binding
->BufferObject
== bufObj
&&
3261 binding
->Offset
== offset
&&
3262 binding
->Size
== size
) {
3266 FLUSH_VERTICES(ctx
, 0);
3267 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3269 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3273 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3275 const GLintptr
*offsets
,
3276 const GLsizeiptr
*sizes
)
3278 if (offsets
[index
] < 0) {
3279 /* The ARB_multi_bind spec says:
3281 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3282 * value in <offsets> is less than zero (per binding)."
3284 _mesa_error(ctx
, GL_INVALID_VALUE
,
3285 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3286 index
, (int64_t) offsets
[index
]);
3290 if (sizes
[index
] <= 0) {
3291 /* The ARB_multi_bind spec says:
3293 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3294 * value in <sizes> is less than or equal to zero (per binding)."
3296 _mesa_error(ctx
, GL_INVALID_VALUE
,
3297 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3298 index
, (int64_t) sizes
[index
]);
3306 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3307 GLuint first
, GLsizei count
,
3310 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3311 _mesa_error(ctx
, GL_INVALID_ENUM
,
3312 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3316 /* The ARB_multi_bind_spec says:
3318 * "An INVALID_OPERATION error is generated if <first> + <count> is
3319 * greater than the number of target-specific indexed binding points,
3320 * as described in section 6.7.1."
3322 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3323 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3324 "%s(first=%u + count=%d > the value of "
3325 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3326 caller
, first
, count
,
3327 ctx
->Const
.MaxUniformBufferBindings
);
3335 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3336 GLuint first
, GLsizei count
,
3339 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3340 _mesa_error(ctx
, GL_INVALID_ENUM
,
3341 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3345 /* The ARB_multi_bind_spec says:
3347 * "An INVALID_OPERATION error is generated if <first> + <count> is
3348 * greater than the number of target-specific indexed binding points,
3349 * as described in section 6.7.1."
3351 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3352 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3353 "%s(first=%u + count=%d > the value of "
3354 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3355 caller
, first
, count
,
3356 ctx
->Const
.MaxShaderStorageBufferBindings
);
3364 * Unbind all uniform buffers in the range
3365 * <first> through <first>+<count>-1
3368 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3370 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3372 for (int i
= 0; i
< count
; i
++)
3373 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3374 bufObj
, -1, -1, GL_TRUE
);
3378 * Unbind all shader storage buffers in the range
3379 * <first> through <first>+<count>-1
3382 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3385 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3387 for (int i
= 0; i
< count
; i
++)
3388 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3389 bufObj
, -1, -1, GL_TRUE
);
3393 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3394 const GLuint
*buffers
,
3396 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3399 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3402 /* Assume that at least one binding will be changed */
3403 FLUSH_VERTICES(ctx
, 0);
3404 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3407 /* The ARB_multi_bind spec says:
3409 * "If <buffers> is NULL, all bindings from <first> through
3410 * <first>+<count>-1 are reset to their unbound (zero) state.
3411 * In this case, the offsets and sizes associated with the
3412 * binding points are set to default values, ignoring
3413 * <offsets> and <sizes>."
3415 unbind_uniform_buffers(ctx
, first
, count
);
3419 /* Note that the error semantics for multi-bind commands differ from
3420 * those of other GL commands.
3422 * The Issues section in the ARB_multi_bind spec says:
3424 * "(11) Typically, OpenGL specifies that if an error is generated by a
3425 * command, that command has no effect. This is somewhat
3426 * unfortunate for multi-bind commands, because it would require a
3427 * first pass to scan the entire list of bound objects for errors
3428 * and then a second pass to actually perform the bindings.
3429 * Should we have different error semantics?
3431 * RESOLVED: Yes. In this specification, when the parameters for
3432 * one of the <count> binding points are invalid, that binding point
3433 * is not updated and an error will be generated. However, other
3434 * binding points in the same command will be updated if their
3435 * parameters are valid and no other error occurs."
3438 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3440 for (int i
= 0; i
< count
; i
++) {
3441 struct gl_uniform_buffer_binding
*binding
=
3442 &ctx
->UniformBufferBindings
[first
+ i
];
3443 struct gl_buffer_object
*bufObj
;
3444 GLintptr offset
= 0;
3445 GLsizeiptr size
= 0;
3448 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3451 /* The ARB_multi_bind spec says:
3453 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3454 * pair of values in <offsets> and <sizes> does not respectively
3455 * satisfy the constraints described for those parameters for the
3456 * specified target, as described in section 6.7.1 (per binding)."
3458 * Section 6.7.1 refers to table 6.5, which says:
3460 * "┌───────────────────────────────────────────────────────────────┐
3461 * │ Uniform buffer array bindings (see sec. 7.6) │
3462 * ├─────────────────────┬─────────────────────────────────────────┤
3464 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3465 * │ │ OFFSET_ALIGNMENT │
3467 * │ size restriction │ none │
3468 * └─────────────────────┴─────────────────────────────────────────┘"
3470 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3471 _mesa_error(ctx
, GL_INVALID_VALUE
,
3472 "glBindBuffersRange(offsets[%u]=%" PRId64
3473 " is misaligned; it must be a multiple of the value of "
3474 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3475 "target=GL_UNIFORM_BUFFER)",
3476 i
, (int64_t) offsets
[i
],
3477 ctx
->Const
.UniformBufferOffsetAlignment
);
3481 offset
= offsets
[i
];
3485 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3486 bufObj
= binding
->BufferObject
;
3488 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3491 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3492 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3494 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3498 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3502 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3503 GLsizei count
, const GLuint
*buffers
,
3505 const GLintptr
*offsets
,
3506 const GLsizeiptr
*sizes
,
3509 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3512 /* Assume that at least one binding will be changed */
3513 FLUSH_VERTICES(ctx
, 0);
3514 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3517 /* The ARB_multi_bind spec says:
3519 * "If <buffers> is NULL, all bindings from <first> through
3520 * <first>+<count>-1 are reset to their unbound (zero) state.
3521 * In this case, the offsets and sizes associated with the
3522 * binding points are set to default values, ignoring
3523 * <offsets> and <sizes>."
3525 unbind_shader_storage_buffers(ctx
, first
, count
);
3529 /* Note that the error semantics for multi-bind commands differ from
3530 * those of other GL commands.
3532 * The Issues section in the ARB_multi_bind spec says:
3534 * "(11) Typically, OpenGL specifies that if an error is generated by a
3535 * command, that command has no effect. This is somewhat
3536 * unfortunate for multi-bind commands, because it would require a
3537 * first pass to scan the entire list of bound objects for errors
3538 * and then a second pass to actually perform the bindings.
3539 * Should we have different error semantics?
3541 * RESOLVED: Yes. In this specification, when the parameters for
3542 * one of the <count> binding points are invalid, that binding point
3543 * is not updated and an error will be generated. However, other
3544 * binding points in the same command will be updated if their
3545 * parameters are valid and no other error occurs."
3548 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3550 for (int i
= 0; i
< count
; i
++) {
3551 struct gl_shader_storage_buffer_binding
*binding
=
3552 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3553 struct gl_buffer_object
*bufObj
;
3554 GLintptr offset
= 0;
3555 GLsizeiptr size
= 0;
3558 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3561 /* The ARB_multi_bind spec says:
3563 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3564 * pair of values in <offsets> and <sizes> does not respectively
3565 * satisfy the constraints described for those parameters for the
3566 * specified target, as described in section 6.7.1 (per binding)."
3568 * Section 6.7.1 refers to table 6.5, which says:
3570 * "┌───────────────────────────────────────────────────────────────┐
3571 * │ Shader storage buffer array bindings (see sec. 7.8) │
3572 * ├─────────────────────┬─────────────────────────────────────────┤
3574 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3575 * │ │ BUFFER_OFFSET_ALIGNMENT │
3577 * │ size restriction │ none │
3578 * └─────────────────────┴─────────────────────────────────────────┘"
3580 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3581 _mesa_error(ctx
, GL_INVALID_VALUE
,
3582 "glBindBuffersRange(offsets[%u]=%" PRId64
3583 " is misaligned; it must be a multiple of the value of "
3584 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3585 "target=GL_SHADER_STORAGE_BUFFER)",
3586 i
, (int64_t) offsets
[i
],
3587 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3591 offset
= offsets
[i
];
3595 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3596 bufObj
= binding
->BufferObject
;
3598 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3601 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3602 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3604 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3608 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3612 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3613 struct gl_transform_feedback_object
*tfObj
,
3614 GLuint first
, GLsizei count
, const char *caller
)
3616 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3617 _mesa_error(ctx
, GL_INVALID_ENUM
,
3618 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3622 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3624 * "An INVALID_OPERATION error is generated :
3627 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3628 * FEEDBACK_BUFFER and transform feedback is currently active."
3630 * We assume that this is also meant to apply to BindBuffersRange
3631 * and BindBuffersBase.
3633 if (tfObj
->Active
) {
3634 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3635 "%s(Changing transform feedback buffers while "
3636 "transform feedback is active)", caller
);
3640 /* The ARB_multi_bind_spec says:
3642 * "An INVALID_OPERATION error is generated if <first> + <count> is
3643 * greater than the number of target-specific indexed binding points,
3644 * as described in section 6.7.1."
3646 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3647 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3648 "%s(first=%u + count=%d > the value of "
3649 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3650 caller
, first
, count
,
3651 ctx
->Const
.MaxTransformFeedbackBuffers
);
3659 * Unbind all transform feedback buffers in the range
3660 * <first> through <first>+<count>-1
3663 unbind_xfb_buffers(struct gl_context
*ctx
,
3664 struct gl_transform_feedback_object
*tfObj
,
3665 GLuint first
, GLsizei count
)
3667 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3669 for (int i
= 0; i
< count
; i
++)
3670 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3675 bind_xfb_buffers(struct gl_context
*ctx
,
3676 GLuint first
, GLsizei count
,
3677 const GLuint
*buffers
,
3679 const GLintptr
*offsets
,
3680 const GLsizeiptr
*sizes
,
3683 struct gl_transform_feedback_object
*tfObj
=
3684 ctx
->TransformFeedback
.CurrentObject
;
3686 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3689 /* Assume that at least one binding will be changed */
3690 FLUSH_VERTICES(ctx
, 0);
3691 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3694 /* The ARB_multi_bind spec says:
3696 * "If <buffers> is NULL, all bindings from <first> through
3697 * <first>+<count>-1 are reset to their unbound (zero) state.
3698 * In this case, the offsets and sizes associated with the
3699 * binding points are set to default values, ignoring
3700 * <offsets> and <sizes>."
3702 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3706 /* Note that the error semantics for multi-bind commands differ from
3707 * those of other GL commands.
3709 * The Issues section in the ARB_multi_bind spec says:
3711 * "(11) Typically, OpenGL specifies that if an error is generated by a
3712 * command, that command has no effect. This is somewhat
3713 * unfortunate for multi-bind commands, because it would require a
3714 * first pass to scan the entire list of bound objects for errors
3715 * and then a second pass to actually perform the bindings.
3716 * Should we have different error semantics?
3718 * RESOLVED: Yes. In this specification, when the parameters for
3719 * one of the <count> binding points are invalid, that binding point
3720 * is not updated and an error will be generated. However, other
3721 * binding points in the same command will be updated if their
3722 * parameters are valid and no other error occurs."
3725 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3727 for (int i
= 0; i
< count
; i
++) {
3728 const GLuint index
= first
+ i
;
3729 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3730 struct gl_buffer_object
*bufObj
;
3731 GLintptr offset
= 0;
3732 GLsizeiptr size
= 0;
3735 offset
= offsets
[i
];
3738 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3741 /* The ARB_multi_bind spec says:
3743 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3744 * pair of values in <offsets> and <sizes> does not respectively
3745 * satisfy the constraints described for those parameters for the
3746 * specified target, as described in section 6.7.1 (per binding)."
3748 * Section 6.7.1 refers to table 6.5, which says:
3750 * "┌───────────────────────────────────────────────────────────────┐
3751 * │ Transform feedback array bindings (see sec. 13.2.2) │
3752 * ├───────────────────────┬───────────────────────────────────────┤
3754 * │ offset restriction │ multiple of 4 │
3756 * │ size restriction │ multiple of 4 │
3757 * └───────────────────────┴───────────────────────────────────────┘"
3759 if (offsets
[i
] & 0x3) {
3760 _mesa_error(ctx
, GL_INVALID_VALUE
,
3761 "glBindBuffersRange(offsets[%u]=%" PRId64
3762 " is misaligned; it must be a multiple of 4 when "
3763 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3764 i
, (int64_t) offsets
[i
]);
3768 if (sizes
[i
] & 0x3) {
3769 _mesa_error(ctx
, GL_INVALID_VALUE
,
3770 "glBindBuffersRange(sizes[%u]=%" PRId64
3771 " is misaligned; it must be a multiple of 4 when "
3772 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3773 i
, (int64_t) sizes
[i
]);
3777 offset
= offsets
[i
];
3781 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3782 bufObj
= boundBufObj
;
3784 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3787 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3791 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3795 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3796 GLuint first
, GLsizei count
,
3799 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3800 _mesa_error(ctx
, GL_INVALID_ENUM
,
3801 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3805 /* The ARB_multi_bind_spec says:
3807 * "An INVALID_OPERATION error is generated if <first> + <count> is
3808 * greater than the number of target-specific indexed binding points,
3809 * as described in section 6.7.1."
3811 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3812 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3813 "%s(first=%u + count=%d > the value of "
3814 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3815 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3823 * Unbind all atomic counter buffers in the range
3824 * <first> through <first>+<count>-1
3827 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3829 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3831 for (int i
= 0; i
< count
; i
++)
3832 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3837 bind_atomic_buffers(struct gl_context
*ctx
,
3840 const GLuint
*buffers
,
3842 const GLintptr
*offsets
,
3843 const GLsizeiptr
*sizes
,
3846 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3849 /* Assume that at least one binding will be changed */
3850 FLUSH_VERTICES(ctx
, 0);
3851 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3854 /* The ARB_multi_bind spec says:
3856 * "If <buffers> is NULL, all bindings from <first> through
3857 * <first>+<count>-1 are reset to their unbound (zero) state.
3858 * In this case, the offsets and sizes associated with the
3859 * binding points are set to default values, ignoring
3860 * <offsets> and <sizes>."
3862 unbind_atomic_buffers(ctx
, first
, count
);
3866 /* Note that the error semantics for multi-bind commands differ from
3867 * those of other GL commands.
3869 * The Issues section in the ARB_multi_bind spec says:
3871 * "(11) Typically, OpenGL specifies that if an error is generated by a
3872 * command, that command has no effect. This is somewhat
3873 * unfortunate for multi-bind commands, because it would require a
3874 * first pass to scan the entire list of bound objects for errors
3875 * and then a second pass to actually perform the bindings.
3876 * Should we have different error semantics?
3878 * RESOLVED: Yes. In this specification, when the parameters for
3879 * one of the <count> binding points are invalid, that binding point
3880 * is not updated and an error will be generated. However, other
3881 * binding points in the same command will be updated if their
3882 * parameters are valid and no other error occurs."
3885 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3887 for (int i
= 0; i
< count
; i
++) {
3888 struct gl_atomic_buffer_binding
*binding
=
3889 &ctx
->AtomicBufferBindings
[first
+ i
];
3890 struct gl_buffer_object
*bufObj
;
3891 GLintptr offset
= 0;
3892 GLsizeiptr size
= 0;
3895 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3898 /* The ARB_multi_bind spec says:
3900 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3901 * pair of values in <offsets> and <sizes> does not respectively
3902 * satisfy the constraints described for those parameters for the
3903 * specified target, as described in section 6.7.1 (per binding)."
3905 * Section 6.7.1 refers to table 6.5, which says:
3907 * "┌───────────────────────────────────────────────────────────────┐
3908 * │ Atomic counter array bindings (see sec. 7.7.2) │
3909 * ├───────────────────────┬───────────────────────────────────────┤
3911 * │ offset restriction │ multiple of 4 │
3913 * │ size restriction │ none │
3914 * └───────────────────────┴───────────────────────────────────────┘"
3916 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3917 _mesa_error(ctx
, GL_INVALID_VALUE
,
3918 "glBindBuffersRange(offsets[%u]=%" PRId64
3919 " is misaligned; it must be a multiple of %d when "
3920 "target=GL_ATOMIC_COUNTER_BUFFER)",
3921 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3925 offset
= offsets
[i
];
3929 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3930 bufObj
= binding
->BufferObject
;
3932 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3935 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3938 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3942 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3943 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3945 GET_CURRENT_CONTEXT(ctx
);
3946 struct gl_buffer_object
*bufObj
;
3948 if (MESA_VERBOSE
& VERBOSE_API
) {
3949 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
3950 _mesa_enum_to_string(target
), index
, buffer
,
3951 (unsigned long) offset
, (unsigned long) size
);
3955 bufObj
= ctx
->Shared
->NullBufferObj
;
3957 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3959 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3960 &bufObj
, "glBindBufferRange"))
3964 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3965 "glBindBufferRange(invalid buffer=%u)", buffer
);
3971 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3978 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3979 _mesa_bind_buffer_range_transform_feedback(ctx
,
3980 ctx
->TransformFeedback
.CurrentObject
,
3981 index
, bufObj
, offset
, size
,
3984 case GL_UNIFORM_BUFFER
:
3985 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3987 case GL_SHADER_STORAGE_BUFFER
:
3988 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3990 case GL_ATOMIC_COUNTER_BUFFER
:
3991 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3992 "glBindBufferRange");
3995 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4001 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4003 GET_CURRENT_CONTEXT(ctx
);
4004 struct gl_buffer_object
*bufObj
;
4006 if (MESA_VERBOSE
& VERBOSE_API
) {
4007 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4008 _mesa_enum_to_string(target
), index
, buffer
);
4012 bufObj
= ctx
->Shared
->NullBufferObj
;
4014 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4016 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4017 &bufObj
, "glBindBufferBase"))
4021 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4022 "glBindBufferBase(invalid buffer=%u)", buffer
);
4026 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4027 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4029 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4030 * zero and size equal to the size of buffer."
4032 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4034 * "If the parameter (starting offset or size) was not specified when the
4035 * buffer object was bound, zero is returned."
4037 * What happens if the size of the buffer changes? Does the size of the
4038 * buffer at the moment glBindBufferBase was called still play a role, like
4039 * the first quote would imply, or is the size meaningless in the
4040 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4041 * core spec page 45 says:
4043 * "It is equivalent to calling BindBufferRange with offset zero, while
4044 * size is determined by the size of the bound buffer at the time the
4047 * My interpretation is that the GL 4.1 spec was a clarification of the
4048 * behavior, not a change. In particular, this choice will only make
4049 * rendering work in cases where it would have had undefined results.
4053 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4054 _mesa_bind_buffer_base_transform_feedback(ctx
,
4055 ctx
->TransformFeedback
.CurrentObject
,
4056 index
, bufObj
, false);
4058 case GL_UNIFORM_BUFFER
:
4059 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4061 case GL_SHADER_STORAGE_BUFFER
:
4062 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4064 case GL_ATOMIC_COUNTER_BUFFER
:
4065 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
4066 "glBindBufferBase");
4069 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4075 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4076 const GLuint
*buffers
,
4077 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4079 GET_CURRENT_CONTEXT(ctx
);
4081 if (MESA_VERBOSE
& VERBOSE_API
) {
4082 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4083 _mesa_enum_to_string(target
), first
, count
,
4084 buffers
, offsets
, sizes
);
4088 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4089 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4090 "glBindBuffersRange");
4092 case GL_UNIFORM_BUFFER
:
4093 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4094 "glBindBuffersRange");
4096 case GL_SHADER_STORAGE_BUFFER
:
4097 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4098 "glBindBuffersRange");
4100 case GL_ATOMIC_COUNTER_BUFFER
:
4101 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4102 "glBindBuffersRange");
4105 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4106 _mesa_enum_to_string(target
));
4112 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4113 const GLuint
*buffers
)
4115 GET_CURRENT_CONTEXT(ctx
);
4117 if (MESA_VERBOSE
& VERBOSE_API
) {
4118 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4119 _mesa_enum_to_string(target
), first
, count
, buffers
);
4123 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4124 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4125 "glBindBuffersBase");
4127 case GL_UNIFORM_BUFFER
:
4128 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4129 "glBindBuffersBase");
4131 case GL_SHADER_STORAGE_BUFFER
:
4132 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4133 "glBindBuffersBase");
4135 case GL_ATOMIC_COUNTER_BUFFER
:
4136 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4137 "glBindBuffersBase");
4140 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4141 _mesa_enum_to_string(target
));
4147 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4150 GET_CURRENT_CONTEXT(ctx
);
4151 struct gl_buffer_object
*bufObj
;
4152 const GLintptr end
= offset
+ length
;
4154 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4155 * Profile) spec says:
4157 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4158 * name of an existing buffer object."
4160 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4161 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4162 _mesa_error(ctx
, GL_INVALID_VALUE
,
4163 "glInvalidateBufferSubData(name = %u) invalid object",
4168 /* The GL_ARB_invalidate_subdata spec says:
4170 * "An INVALID_VALUE error is generated if <offset> or <length> is
4171 * negative, or if <offset> + <length> is greater than the value of
4174 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4175 _mesa_error(ctx
, GL_INVALID_VALUE
,
4176 "glInvalidateBufferSubData(invalid offset or length)");
4180 /* The OpenGL 4.4 (Core Profile) spec says:
4182 * "An INVALID_OPERATION error is generated if buffer is currently
4183 * mapped by MapBuffer or if the invalidate range intersects the range
4184 * currently mapped by MapBufferRange, unless it was mapped
4185 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4187 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4188 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4189 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4190 "glInvalidateBufferSubData(intersection with mapped "
4195 if (ctx
->Driver
.InvalidateBufferSubData
)
4196 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4200 _mesa_InvalidateBufferData(GLuint buffer
)
4202 GET_CURRENT_CONTEXT(ctx
);
4203 struct gl_buffer_object
*bufObj
;
4205 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4206 * Profile) spec says:
4208 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4209 * name of an existing buffer object."
4211 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4212 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4213 _mesa_error(ctx
, GL_INVALID_VALUE
,
4214 "glInvalidateBufferData(name = %u) invalid object",
4219 /* The OpenGL 4.4 (Core Profile) spec says:
4221 * "An INVALID_OPERATION error is generated if buffer is currently
4222 * mapped by MapBuffer or if the invalidate range intersects the range
4223 * currently mapped by MapBufferRange, unless it was mapped
4224 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4226 if (_mesa_check_disallowed_mapping(bufObj
)) {
4227 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4228 "glInvalidateBufferData(intersection with mapped "
4233 if (ctx
->Driver
.InvalidateBufferSubData
)
4234 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, 0, bufObj
->Size
);
4238 buffer_page_commitment(struct gl_context
*ctx
,
4239 struct gl_buffer_object
*bufferObj
,
4240 GLintptr offset
, GLsizeiptr size
,
4241 GLboolean commit
, const char *func
)
4243 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4244 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4249 if (size
< 0 || size
> bufferObj
->Size
||
4250 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4251 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4256 /* The GL_ARB_sparse_buffer extension specification says:
4258 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4259 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4260 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4261 * not extend to the end of the buffer's data store."
4263 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4264 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4269 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4270 offset
+ size
!= bufferObj
->Size
) {
4271 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4276 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4280 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4283 GET_CURRENT_CONTEXT(ctx
);
4284 struct gl_buffer_object
*bufferObj
;
4286 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4291 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4292 "glBufferPageCommitmentARB");
4296 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4297 GLsizeiptr size
, GLboolean commit
)
4299 GET_CURRENT_CONTEXT(ctx
);
4300 struct gl_buffer_object
*bufferObj
;
4302 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4303 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4304 /* Note: the extension spec is not clear about the excpected error value. */
4305 _mesa_error(ctx
, GL_INVALID_VALUE
,
4306 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4311 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4312 "glNamedBufferPageCommitmentARB");