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 static ALWAYS_INLINE
void
1859 buffer_sub_data(GLenum target
, GLuint buffer
, GLintptr offset
,
1860 GLsizeiptr size
, const GLvoid
*data
,
1861 bool dsa
, const char *func
)
1863 GET_CURRENT_CONTEXT(ctx
);
1864 struct gl_buffer_object
*bufObj
;
1867 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1871 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1876 if (validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
1877 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
1882 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1883 GLsizeiptr size
, const GLvoid
*data
)
1885 buffer_sub_data(target
, 0, offset
, size
, data
, false, "glBufferSubData");
1889 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1890 GLsizeiptr size
, const GLvoid
*data
)
1892 buffer_sub_data(0, buffer
, offset
, size
, data
, true,
1893 "glNamedBufferSubData");
1898 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1899 GLsizeiptr size
, GLvoid
*data
)
1901 GET_CURRENT_CONTEXT(ctx
);
1902 struct gl_buffer_object
*bufObj
;
1904 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1905 GL_INVALID_OPERATION
);
1909 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1910 "glGetBufferSubData")) {
1914 assert(ctx
->Driver
.GetBufferSubData
);
1915 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1919 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1920 GLsizeiptr size
, GLvoid
*data
)
1922 GET_CURRENT_CONTEXT(ctx
);
1923 struct gl_buffer_object
*bufObj
;
1925 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1926 "glGetNamedBufferSubData");
1930 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1931 "glGetNamedBufferSubData")) {
1935 assert(ctx
->Driver
.GetBufferSubData
);
1936 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1941 * \param subdata true if caller is *SubData, false if *Data
1944 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1945 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
1946 GLenum format
, GLenum type
, const GLvoid
*data
,
1947 const char *func
, bool subdata
)
1949 mesa_format mesaFormat
;
1950 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1951 GLsizeiptr clearValueSize
;
1953 /* This checks for disallowed mappings. */
1954 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1959 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1960 format
, type
, func
);
1962 if (mesaFormat
== MESA_FORMAT_NONE
) {
1966 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1967 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1968 _mesa_error(ctx
, GL_INVALID_VALUE
,
1969 "%s(offset or size is not a multiple of "
1970 "internalformat size)", func
);
1974 /* Bail early. Negative size has already been checked. */
1978 bufObj
->MinMaxCacheDirty
= true;
1981 /* clear to zeros, per the spec */
1982 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1983 NULL
, clearValueSize
, bufObj
);
1987 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1988 format
, type
, data
, func
)) {
1992 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1993 clearValue
, clearValueSize
, bufObj
);
1997 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1998 GLenum type
, const GLvoid
*data
)
2000 GET_CURRENT_CONTEXT(ctx
);
2001 struct gl_buffer_object
*bufObj
;
2003 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2007 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2008 format
, type
, data
, "glClearBufferData", false);
2012 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2013 GLenum format
, GLenum type
, const GLvoid
*data
)
2015 GET_CURRENT_CONTEXT(ctx
);
2016 struct gl_buffer_object
*bufObj
;
2018 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2022 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2023 format
, type
, data
, "glClearNamedBufferData", false);
2028 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2029 GLintptr offset
, GLsizeiptr size
,
2030 GLenum format
, GLenum type
,
2033 GET_CURRENT_CONTEXT(ctx
);
2034 struct gl_buffer_object
*bufObj
;
2036 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2040 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2041 format
, type
, data
, "glClearBufferSubData", true);
2045 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2046 GLintptr offset
, GLsizeiptr size
,
2047 GLenum format
, GLenum type
,
2050 GET_CURRENT_CONTEXT(ctx
);
2051 struct gl_buffer_object
*bufObj
;
2053 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2054 "glClearNamedBufferSubData");
2058 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2059 type
, data
, "glClearNamedBufferSubData", true);
2063 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2065 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2066 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2067 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2068 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2069 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2075 validate_and_unmap_buffer(struct gl_context
*ctx
,
2076 struct gl_buffer_object
*bufObj
,
2079 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2081 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2082 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2083 "%s(buffer is not mapped)", func
);
2088 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2089 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2091 /* check that last 100 bytes are still = magic value */
2092 for (i
= 0; i
< 100; i
++) {
2093 GLuint pos
= bufObj
->Size
- i
- 1;
2094 if (buf
[pos
] != 123) {
2095 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2096 " at position %d (value = %u)\n",
2104 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2105 GLuint i
, unchanged
= 0;
2106 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2108 /* check which bytes changed */
2109 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2110 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2117 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2118 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2123 return unmap_buffer(ctx
, bufObj
);
2126 GLboolean GLAPIENTRY
2127 _mesa_UnmapBuffer_no_error(GLenum target
)
2129 GET_CURRENT_CONTEXT(ctx
);
2130 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2131 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2133 return unmap_buffer(ctx
, bufObj
);
2136 GLboolean GLAPIENTRY
2137 _mesa_UnmapBuffer(GLenum target
)
2139 GET_CURRENT_CONTEXT(ctx
);
2140 struct gl_buffer_object
*bufObj
;
2142 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2146 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2149 GLboolean GLAPIENTRY
2150 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2152 GET_CURRENT_CONTEXT(ctx
);
2153 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2155 return unmap_buffer(ctx
, bufObj
);
2158 GLboolean GLAPIENTRY
2159 _mesa_UnmapNamedBuffer(GLuint buffer
)
2161 GET_CURRENT_CONTEXT(ctx
);
2162 struct gl_buffer_object
*bufObj
;
2164 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2168 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2173 get_buffer_parameter(struct gl_context
*ctx
,
2174 struct gl_buffer_object
*bufObj
, GLenum pname
,
2175 GLint64
*params
, const char *func
)
2178 case GL_BUFFER_SIZE_ARB
:
2179 *params
= bufObj
->Size
;
2181 case GL_BUFFER_USAGE_ARB
:
2182 *params
= bufObj
->Usage
;
2184 case GL_BUFFER_ACCESS_ARB
:
2185 *params
= simplified_access_mode(ctx
,
2186 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2188 case GL_BUFFER_MAPPED_ARB
:
2189 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2191 case GL_BUFFER_ACCESS_FLAGS
:
2192 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2194 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2196 case GL_BUFFER_MAP_OFFSET
:
2197 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2199 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2201 case GL_BUFFER_MAP_LENGTH
:
2202 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2204 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2206 case GL_BUFFER_IMMUTABLE_STORAGE
:
2207 if (!ctx
->Extensions
.ARB_buffer_storage
)
2209 *params
= bufObj
->Immutable
;
2211 case GL_BUFFER_STORAGE_FLAGS
:
2212 if (!ctx
->Extensions
.ARB_buffer_storage
)
2214 *params
= bufObj
->StorageFlags
;
2223 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2224 _mesa_enum_to_string(pname
));
2229 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2231 GET_CURRENT_CONTEXT(ctx
);
2232 struct gl_buffer_object
*bufObj
;
2235 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2236 GL_INVALID_OPERATION
);
2240 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2241 "glGetBufferParameteriv"))
2242 return; /* Error already recorded. */
2244 *params
= (GLint
) parameter
;
2248 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2250 GET_CURRENT_CONTEXT(ctx
);
2251 struct gl_buffer_object
*bufObj
;
2254 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2255 GL_INVALID_OPERATION
);
2259 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2260 "glGetBufferParameteri64v"))
2261 return; /* Error already recorded. */
2263 *params
= parameter
;
2267 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2269 GET_CURRENT_CONTEXT(ctx
);
2270 struct gl_buffer_object
*bufObj
;
2273 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2274 "glGetNamedBufferParameteriv");
2278 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2279 "glGetNamedBufferParameteriv"))
2280 return; /* Error already recorded. */
2282 *params
= (GLint
) parameter
;
2286 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2289 GET_CURRENT_CONTEXT(ctx
);
2290 struct gl_buffer_object
*bufObj
;
2293 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2294 "glGetNamedBufferParameteri64v");
2298 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2299 "glGetNamedBufferParameteri64v"))
2300 return; /* Error already recorded. */
2302 *params
= parameter
;
2307 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2309 GET_CURRENT_CONTEXT(ctx
);
2310 struct gl_buffer_object
*bufObj
;
2312 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2313 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2314 "GL_BUFFER_MAP_POINTER)");
2318 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2319 GL_INVALID_OPERATION
);
2323 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2327 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2329 GET_CURRENT_CONTEXT(ctx
);
2330 struct gl_buffer_object
*bufObj
;
2332 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2333 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2334 "GL_BUFFER_MAP_POINTER)");
2338 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2339 "glGetNamedBufferPointerv");
2343 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2348 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2349 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2350 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2352 if (_mesa_check_disallowed_mapping(src
)) {
2353 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2354 "%s(readBuffer is mapped)", func
);
2358 if (_mesa_check_disallowed_mapping(dst
)) {
2359 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2360 "%s(writeBuffer is mapped)", func
);
2364 if (readOffset
< 0) {
2365 _mesa_error(ctx
, GL_INVALID_VALUE
,
2366 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2370 if (writeOffset
< 0) {
2371 _mesa_error(ctx
, GL_INVALID_VALUE
,
2372 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2377 _mesa_error(ctx
, GL_INVALID_VALUE
,
2378 "%s(size %d < 0)", func
, (int) size
);
2382 if (readOffset
+ size
> src
->Size
) {
2383 _mesa_error(ctx
, GL_INVALID_VALUE
,
2384 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2385 (int) readOffset
, (int) size
, (int) src
->Size
);
2389 if (writeOffset
+ size
> dst
->Size
) {
2390 _mesa_error(ctx
, GL_INVALID_VALUE
,
2391 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2392 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2397 if (readOffset
+ size
<= writeOffset
) {
2400 else if (writeOffset
+ size
<= readOffset
) {
2404 /* overlapping src/dst is illegal */
2405 _mesa_error(ctx
, GL_INVALID_VALUE
,
2406 "%s(overlapping src/dst)", func
);
2411 dst
->MinMaxCacheDirty
= true;
2413 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2417 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2418 GLintptr readOffset
, GLintptr writeOffset
,
2421 GET_CURRENT_CONTEXT(ctx
);
2423 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2424 struct gl_buffer_object
*src
= *src_ptr
;
2426 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2427 struct gl_buffer_object
*dst
= *dst_ptr
;
2429 dst
->MinMaxCacheDirty
= true;
2430 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2435 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2436 GLintptr readOffset
, GLintptr writeOffset
,
2439 GET_CURRENT_CONTEXT(ctx
);
2440 struct gl_buffer_object
*src
, *dst
;
2442 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2443 GL_INVALID_OPERATION
);
2447 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2448 GL_INVALID_OPERATION
);
2452 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2453 "glCopyBufferSubData");
2457 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2458 GLintptr readOffset
,
2459 GLintptr writeOffset
, GLsizeiptr size
)
2461 GET_CURRENT_CONTEXT(ctx
);
2463 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2464 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2466 dst
->MinMaxCacheDirty
= true;
2467 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2472 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2473 GLintptr readOffset
, GLintptr writeOffset
,
2476 GET_CURRENT_CONTEXT(ctx
);
2477 struct gl_buffer_object
*src
, *dst
;
2479 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2480 "glCopyNamedBufferSubData");
2484 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2485 "glCopyNamedBufferSubData");
2489 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2490 "glCopyNamedBufferSubData");
2494 validate_map_buffer_range(struct gl_context
*ctx
,
2495 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2496 GLsizeiptr length
, GLbitfield access
,
2499 GLbitfield allowed_access
;
2501 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2504 _mesa_error(ctx
, GL_INVALID_VALUE
,
2505 "%s(offset %ld < 0)", func
, (long) offset
);
2510 _mesa_error(ctx
, GL_INVALID_VALUE
,
2511 "%s(length %ld < 0)", func
, (long) length
);
2515 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2517 * "An INVALID_OPERATION error is generated for any of the following
2520 * * <length> is zero."
2522 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2523 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2527 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2531 allowed_access
= GL_MAP_READ_BIT
|
2533 GL_MAP_INVALIDATE_RANGE_BIT
|
2534 GL_MAP_INVALIDATE_BUFFER_BIT
|
2535 GL_MAP_FLUSH_EXPLICIT_BIT
|
2536 GL_MAP_UNSYNCHRONIZED_BIT
;
2538 if (ctx
->Extensions
.ARB_buffer_storage
) {
2539 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2540 GL_MAP_COHERENT_BIT
;
2543 if (access
& ~allowed_access
) {
2544 /* generate an error if any bits other than those allowed are set */
2545 _mesa_error(ctx
, GL_INVALID_VALUE
,
2546 "%s(access has undefined bits set)", func
);
2550 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2551 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2552 "%s(access indicates neither read or write)", func
);
2556 if ((access
& GL_MAP_READ_BIT
) &&
2557 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2558 GL_MAP_INVALIDATE_BUFFER_BIT
|
2559 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2560 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2561 "%s(read access with disallowed bits)", func
);
2565 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2566 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2567 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2568 "%s(access has flush explicit without write)", func
);
2572 if (access
& GL_MAP_READ_BIT
&&
2573 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2574 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2575 "%s(buffer does not allow read access)", func
);
2579 if (access
& GL_MAP_WRITE_BIT
&&
2580 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2581 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2582 "%s(buffer does not allow write access)", func
);
2586 if (access
& GL_MAP_COHERENT_BIT
&&
2587 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2588 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2589 "%s(buffer does not allow coherent access)", func
);
2593 if (access
& GL_MAP_PERSISTENT_BIT
&&
2594 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2595 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2596 "%s(buffer does not allow persistent access)", func
);
2600 if (offset
+ length
> bufObj
->Size
) {
2601 _mesa_error(ctx
, GL_INVALID_VALUE
,
2602 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2603 (unsigned long) offset
, (unsigned long) length
,
2604 (unsigned long) bufObj
->Size
);
2608 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2609 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2610 "%s(buffer already mapped)", func
);
2614 if (access
& GL_MAP_WRITE_BIT
) {
2615 bufObj
->NumMapBufferWriteCalls
++;
2616 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2617 bufObj
->Usage
== GL_STATIC_COPY
) &&
2618 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2619 BUFFER_USAGE_WARNING(ctx
,
2620 "using %s(buffer %u, offset %u, length %u) to "
2621 "update a %s buffer",
2622 func
, bufObj
->Name
, offset
, length
,
2623 _mesa_enum_to_string(bufObj
->Usage
));
2631 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2632 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2635 if (!bufObj
->Size
) {
2636 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2640 assert(ctx
->Driver
.MapBufferRange
);
2641 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2644 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2647 /* The driver callback should have set all these fields.
2648 * This is important because other modules (like VBO) might call
2649 * the driver function directly.
2651 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2652 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2653 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2654 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2657 if (access
& GL_MAP_WRITE_BIT
) {
2658 bufObj
->Written
= GL_TRUE
;
2659 bufObj
->MinMaxCacheDirty
= true;
2663 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2664 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2665 bufObj
->Name
, bufObj
->Size
, access
);
2666 /* Access must be write only */
2667 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2669 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2670 for (i
= 0; i
< bufObj
->Size
; i
++)
2677 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2678 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2680 /* buffer is 100 bytes larger than requested, fill with magic value */
2681 for (i
= 0; i
< 100; i
++) {
2682 buf
[bufObj
->Size
- i
- 1] = 123;
2691 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
2692 GLsizeiptr length
, GLbitfield access
)
2694 GET_CURRENT_CONTEXT(ctx
);
2696 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2697 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2699 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2700 "glMapBufferRange");
2704 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2707 GET_CURRENT_CONTEXT(ctx
);
2708 struct gl_buffer_object
*bufObj
;
2710 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2711 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2712 "glMapBufferRange(ARB_map_buffer_range not supported)");
2716 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2720 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2721 "glMapBufferRange"))
2724 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2725 "glMapBufferRange");
2729 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2730 GLsizeiptr length
, GLbitfield access
)
2732 GET_CURRENT_CONTEXT(ctx
);
2733 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2735 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2736 "glMapNamedBufferRange");
2740 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2743 GET_CURRENT_CONTEXT(ctx
);
2744 struct gl_buffer_object
*bufObj
;
2746 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2747 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2748 "glMapNamedBufferRange("
2749 "ARB_map_buffer_range not supported)");
2753 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2757 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2758 "glMapNamedBufferRange"))
2761 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2762 "glMapNamedBufferRange");
2766 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2767 * flags for input to map_buffer_range.
2769 * \return true if the type of requested access is permissible.
2772 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2776 case GL_READ_ONLY_ARB
:
2777 *flags
= GL_MAP_READ_BIT
;
2778 return _mesa_is_desktop_gl(ctx
);
2779 case GL_WRITE_ONLY_ARB
:
2780 *flags
= GL_MAP_WRITE_BIT
;
2782 case GL_READ_WRITE_ARB
:
2783 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2784 return _mesa_is_desktop_gl(ctx
);
2791 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
2793 GET_CURRENT_CONTEXT(ctx
);
2795 GLbitfield accessFlags
;
2796 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2798 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2799 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2801 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2806 _mesa_MapBuffer(GLenum target
, GLenum access
)
2808 GET_CURRENT_CONTEXT(ctx
);
2809 struct gl_buffer_object
*bufObj
;
2810 GLbitfield accessFlags
;
2812 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2813 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2817 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2821 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2825 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2830 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
2832 GET_CURRENT_CONTEXT(ctx
);
2834 GLbitfield accessFlags
;
2835 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2837 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2839 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2840 "glMapNamedBuffer");
2844 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2846 GET_CURRENT_CONTEXT(ctx
);
2847 struct gl_buffer_object
*bufObj
;
2848 GLbitfield accessFlags
;
2850 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2851 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2855 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2859 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2860 "glMapNamedBuffer"))
2863 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2864 "glMapNamedBuffer");
2869 flush_mapped_buffer_range(struct gl_context
*ctx
,
2870 struct gl_buffer_object
*bufObj
,
2871 GLintptr offset
, GLsizeiptr length
,
2874 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2875 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2876 "%s(ARB_map_buffer_range not supported)", func
);
2881 _mesa_error(ctx
, GL_INVALID_VALUE
,
2882 "%s(offset %ld < 0)", func
, (long) offset
);
2887 _mesa_error(ctx
, GL_INVALID_VALUE
,
2888 "%s(length %ld < 0)", func
, (long) length
);
2892 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2893 /* buffer is not mapped */
2894 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2895 "%s(buffer is not mapped)", func
);
2899 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2900 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2901 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2902 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2906 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2907 _mesa_error(ctx
, GL_INVALID_VALUE
,
2908 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2909 (long) offset
, (long) length
,
2910 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2914 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2916 if (ctx
->Driver
.FlushMappedBufferRange
)
2917 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2922 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
2925 GET_CURRENT_CONTEXT(ctx
);
2926 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2927 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2929 if (ctx
->Driver
.FlushMappedBufferRange
)
2930 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2935 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2938 GET_CURRENT_CONTEXT(ctx
);
2939 struct gl_buffer_object
*bufObj
;
2941 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2942 GL_INVALID_OPERATION
);
2946 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2947 "glFlushMappedBufferRange");
2951 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2954 GET_CURRENT_CONTEXT(ctx
);
2955 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2957 if (ctx
->Driver
.FlushMappedBufferRange
)
2958 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2963 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2966 GET_CURRENT_CONTEXT(ctx
);
2967 struct gl_buffer_object
*bufObj
;
2969 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2970 "glFlushMappedNamedBufferRange");
2974 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2975 "glFlushMappedNamedBufferRange");
2980 * Binds a buffer object to a uniform buffer binding point.
2982 * The caller is responsible for flushing vertices and updating
2986 set_ubo_binding(struct gl_context
*ctx
,
2987 struct gl_uniform_buffer_binding
*binding
,
2988 struct gl_buffer_object
*bufObj
,
2993 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2995 binding
->Offset
= offset
;
2996 binding
->Size
= size
;
2997 binding
->AutomaticSize
= autoSize
;
2999 /* If this is a real buffer object, mark it has having been used
3000 * at some point as a UBO.
3003 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
3007 * Binds a buffer object to a shader storage buffer binding point.
3009 * The caller is responsible for flushing vertices and updating
3013 set_ssbo_binding(struct gl_context
*ctx
,
3014 struct gl_shader_storage_buffer_binding
*binding
,
3015 struct gl_buffer_object
*bufObj
,
3020 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3022 binding
->Offset
= offset
;
3023 binding
->Size
= size
;
3024 binding
->AutomaticSize
= autoSize
;
3026 /* If this is a real buffer object, mark it has having been used
3027 * at some point as a SSBO.
3030 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
3034 * Binds a buffer object to a uniform buffer binding point.
3036 * Unlike set_ubo_binding(), this function also flushes vertices
3037 * and updates NewDriverState. It also checks if the binding
3038 * has actually changed before updating it.
3041 bind_uniform_buffer(struct gl_context
*ctx
,
3043 struct gl_buffer_object
*bufObj
,
3048 struct gl_uniform_buffer_binding
*binding
=
3049 &ctx
->UniformBufferBindings
[index
];
3051 if (binding
->BufferObject
== bufObj
&&
3052 binding
->Offset
== offset
&&
3053 binding
->Size
== size
&&
3054 binding
->AutomaticSize
== autoSize
) {
3058 FLUSH_VERTICES(ctx
, 0);
3059 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3061 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3065 * Binds a buffer object to a shader storage buffer binding point.
3067 * Unlike set_ssbo_binding(), this function also flushes vertices
3068 * and updates NewDriverState. It also checks if the binding
3069 * has actually changed before updating it.
3072 bind_shader_storage_buffer(struct gl_context
*ctx
,
3074 struct gl_buffer_object
*bufObj
,
3079 struct gl_shader_storage_buffer_binding
*binding
=
3080 &ctx
->ShaderStorageBufferBindings
[index
];
3082 if (binding
->BufferObject
== bufObj
&&
3083 binding
->Offset
== offset
&&
3084 binding
->Size
== size
&&
3085 binding
->AutomaticSize
== autoSize
) {
3089 FLUSH_VERTICES(ctx
, 0);
3090 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3092 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3096 * Bind a region of a buffer object to a uniform block binding point.
3097 * \param index the uniform buffer binding point index
3098 * \param bufObj the buffer object
3099 * \param offset offset to the start of buffer object region
3100 * \param size size of the buffer object region
3103 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
3105 struct gl_buffer_object
*bufObj
,
3109 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3110 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3114 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3115 _mesa_error(ctx
, GL_INVALID_VALUE
,
3116 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3117 ctx
->Const
.UniformBufferOffsetAlignment
);
3121 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3126 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3127 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3131 * Bind a region of a buffer object to a shader storage block binding point.
3132 * \param index the shader storage buffer binding point index
3133 * \param bufObj the buffer object
3134 * \param offset offset to the start of buffer object region
3135 * \param size size of the buffer object region
3138 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3140 struct gl_buffer_object
*bufObj
,
3144 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3145 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3149 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3150 _mesa_error(ctx
, GL_INVALID_VALUE
,
3151 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3152 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3156 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3161 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3162 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3166 * Bind a buffer object to a uniform block binding point.
3167 * As above, but offset = 0.
3170 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
3172 struct gl_buffer_object
*bufObj
)
3174 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3175 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3179 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3181 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3182 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3184 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3188 * Bind a buffer object to a shader storage block binding point.
3189 * As above, but offset = 0.
3192 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
3194 struct gl_buffer_object
*bufObj
)
3196 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3197 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3201 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3203 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3204 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3206 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3210 * Binds a buffer object to an atomic buffer binding point.
3212 * The caller is responsible for validating the offset,
3213 * flushing the vertices and updating NewDriverState.
3216 set_atomic_buffer_binding(struct gl_context
*ctx
,
3217 struct gl_atomic_buffer_binding
*binding
,
3218 struct gl_buffer_object
*bufObj
,
3222 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3224 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3225 binding
->Offset
= 0;
3228 binding
->Offset
= offset
;
3229 binding
->Size
= size
;
3230 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3235 * Binds a buffer object to an atomic buffer binding point.
3237 * Unlike set_atomic_buffer_binding(), this function also validates the
3238 * index and offset, flushes vertices, and updates NewDriverState.
3239 * It also checks if the binding has actually changing before
3243 bind_atomic_buffer(struct gl_context
*ctx
,
3245 struct gl_buffer_object
*bufObj
,
3250 struct gl_atomic_buffer_binding
*binding
;
3252 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3253 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3257 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3258 _mesa_error(ctx
, GL_INVALID_VALUE
,
3259 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3260 ATOMIC_COUNTER_SIZE
);
3264 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3266 binding
= &ctx
->AtomicBufferBindings
[index
];
3267 if (binding
->BufferObject
== bufObj
&&
3268 binding
->Offset
== offset
&&
3269 binding
->Size
== size
) {
3273 FLUSH_VERTICES(ctx
, 0);
3274 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3276 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3280 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3282 const GLintptr
*offsets
,
3283 const GLsizeiptr
*sizes
)
3285 if (offsets
[index
] < 0) {
3286 /* The ARB_multi_bind spec says:
3288 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3289 * value in <offsets> is less than zero (per binding)."
3291 _mesa_error(ctx
, GL_INVALID_VALUE
,
3292 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3293 index
, (int64_t) offsets
[index
]);
3297 if (sizes
[index
] <= 0) {
3298 /* The ARB_multi_bind spec says:
3300 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3301 * value in <sizes> is less than or equal to zero (per binding)."
3303 _mesa_error(ctx
, GL_INVALID_VALUE
,
3304 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3305 index
, (int64_t) sizes
[index
]);
3313 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3314 GLuint first
, GLsizei count
,
3317 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3318 _mesa_error(ctx
, GL_INVALID_ENUM
,
3319 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3323 /* The ARB_multi_bind_spec says:
3325 * "An INVALID_OPERATION error is generated if <first> + <count> is
3326 * greater than the number of target-specific indexed binding points,
3327 * as described in section 6.7.1."
3329 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3330 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3331 "%s(first=%u + count=%d > the value of "
3332 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3333 caller
, first
, count
,
3334 ctx
->Const
.MaxUniformBufferBindings
);
3342 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3343 GLuint first
, GLsizei count
,
3346 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3347 _mesa_error(ctx
, GL_INVALID_ENUM
,
3348 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3352 /* The ARB_multi_bind_spec says:
3354 * "An INVALID_OPERATION error is generated if <first> + <count> is
3355 * greater than the number of target-specific indexed binding points,
3356 * as described in section 6.7.1."
3358 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3359 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3360 "%s(first=%u + count=%d > the value of "
3361 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3362 caller
, first
, count
,
3363 ctx
->Const
.MaxShaderStorageBufferBindings
);
3371 * Unbind all uniform buffers in the range
3372 * <first> through <first>+<count>-1
3375 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3377 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3379 for (int i
= 0; i
< count
; i
++)
3380 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3381 bufObj
, -1, -1, GL_TRUE
);
3385 * Unbind all shader storage buffers in the range
3386 * <first> through <first>+<count>-1
3389 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3392 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3394 for (int i
= 0; i
< count
; i
++)
3395 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3396 bufObj
, -1, -1, GL_TRUE
);
3400 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3401 const GLuint
*buffers
,
3403 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3406 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3409 /* Assume that at least one binding will be changed */
3410 FLUSH_VERTICES(ctx
, 0);
3411 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3414 /* The ARB_multi_bind spec says:
3416 * "If <buffers> is NULL, all bindings from <first> through
3417 * <first>+<count>-1 are reset to their unbound (zero) state.
3418 * In this case, the offsets and sizes associated with the
3419 * binding points are set to default values, ignoring
3420 * <offsets> and <sizes>."
3422 unbind_uniform_buffers(ctx
, first
, count
);
3426 /* Note that the error semantics for multi-bind commands differ from
3427 * those of other GL commands.
3429 * The Issues section in the ARB_multi_bind spec says:
3431 * "(11) Typically, OpenGL specifies that if an error is generated by a
3432 * command, that command has no effect. This is somewhat
3433 * unfortunate for multi-bind commands, because it would require a
3434 * first pass to scan the entire list of bound objects for errors
3435 * and then a second pass to actually perform the bindings.
3436 * Should we have different error semantics?
3438 * RESOLVED: Yes. In this specification, when the parameters for
3439 * one of the <count> binding points are invalid, that binding point
3440 * is not updated and an error will be generated. However, other
3441 * binding points in the same command will be updated if their
3442 * parameters are valid and no other error occurs."
3445 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3447 for (int i
= 0; i
< count
; i
++) {
3448 struct gl_uniform_buffer_binding
*binding
=
3449 &ctx
->UniformBufferBindings
[first
+ i
];
3450 struct gl_buffer_object
*bufObj
;
3451 GLintptr offset
= 0;
3452 GLsizeiptr size
= 0;
3455 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3458 /* The ARB_multi_bind spec says:
3460 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3461 * pair of values in <offsets> and <sizes> does not respectively
3462 * satisfy the constraints described for those parameters for the
3463 * specified target, as described in section 6.7.1 (per binding)."
3465 * Section 6.7.1 refers to table 6.5, which says:
3467 * "┌───────────────────────────────────────────────────────────────┐
3468 * │ Uniform buffer array bindings (see sec. 7.6) │
3469 * ├─────────────────────┬─────────────────────────────────────────┤
3471 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3472 * │ │ OFFSET_ALIGNMENT │
3474 * │ size restriction │ none │
3475 * └─────────────────────┴─────────────────────────────────────────┘"
3477 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3478 _mesa_error(ctx
, GL_INVALID_VALUE
,
3479 "glBindBuffersRange(offsets[%u]=%" PRId64
3480 " is misaligned; it must be a multiple of the value of "
3481 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3482 "target=GL_UNIFORM_BUFFER)",
3483 i
, (int64_t) offsets
[i
],
3484 ctx
->Const
.UniformBufferOffsetAlignment
);
3488 offset
= offsets
[i
];
3492 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3493 bufObj
= binding
->BufferObject
;
3495 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3498 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3499 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3501 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3505 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3509 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3510 GLsizei count
, const GLuint
*buffers
,
3512 const GLintptr
*offsets
,
3513 const GLsizeiptr
*sizes
,
3516 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3519 /* Assume that at least one binding will be changed */
3520 FLUSH_VERTICES(ctx
, 0);
3521 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3524 /* The ARB_multi_bind spec says:
3526 * "If <buffers> is NULL, all bindings from <first> through
3527 * <first>+<count>-1 are reset to their unbound (zero) state.
3528 * In this case, the offsets and sizes associated with the
3529 * binding points are set to default values, ignoring
3530 * <offsets> and <sizes>."
3532 unbind_shader_storage_buffers(ctx
, first
, count
);
3536 /* Note that the error semantics for multi-bind commands differ from
3537 * those of other GL commands.
3539 * The Issues section in the ARB_multi_bind spec says:
3541 * "(11) Typically, OpenGL specifies that if an error is generated by a
3542 * command, that command has no effect. This is somewhat
3543 * unfortunate for multi-bind commands, because it would require a
3544 * first pass to scan the entire list of bound objects for errors
3545 * and then a second pass to actually perform the bindings.
3546 * Should we have different error semantics?
3548 * RESOLVED: Yes. In this specification, when the parameters for
3549 * one of the <count> binding points are invalid, that binding point
3550 * is not updated and an error will be generated. However, other
3551 * binding points in the same command will be updated if their
3552 * parameters are valid and no other error occurs."
3555 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3557 for (int i
= 0; i
< count
; i
++) {
3558 struct gl_shader_storage_buffer_binding
*binding
=
3559 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3560 struct gl_buffer_object
*bufObj
;
3561 GLintptr offset
= 0;
3562 GLsizeiptr size
= 0;
3565 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3568 /* The ARB_multi_bind spec says:
3570 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3571 * pair of values in <offsets> and <sizes> does not respectively
3572 * satisfy the constraints described for those parameters for the
3573 * specified target, as described in section 6.7.1 (per binding)."
3575 * Section 6.7.1 refers to table 6.5, which says:
3577 * "┌───────────────────────────────────────────────────────────────┐
3578 * │ Shader storage buffer array bindings (see sec. 7.8) │
3579 * ├─────────────────────┬─────────────────────────────────────────┤
3581 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3582 * │ │ BUFFER_OFFSET_ALIGNMENT │
3584 * │ size restriction │ none │
3585 * └─────────────────────┴─────────────────────────────────────────┘"
3587 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3588 _mesa_error(ctx
, GL_INVALID_VALUE
,
3589 "glBindBuffersRange(offsets[%u]=%" PRId64
3590 " is misaligned; it must be a multiple of the value of "
3591 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3592 "target=GL_SHADER_STORAGE_BUFFER)",
3593 i
, (int64_t) offsets
[i
],
3594 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3598 offset
= offsets
[i
];
3602 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3603 bufObj
= binding
->BufferObject
;
3605 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3608 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3609 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3611 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3615 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3619 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3620 struct gl_transform_feedback_object
*tfObj
,
3621 GLuint first
, GLsizei count
, const char *caller
)
3623 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3624 _mesa_error(ctx
, GL_INVALID_ENUM
,
3625 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3629 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3631 * "An INVALID_OPERATION error is generated :
3634 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3635 * FEEDBACK_BUFFER and transform feedback is currently active."
3637 * We assume that this is also meant to apply to BindBuffersRange
3638 * and BindBuffersBase.
3640 if (tfObj
->Active
) {
3641 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3642 "%s(Changing transform feedback buffers while "
3643 "transform feedback is active)", caller
);
3647 /* The ARB_multi_bind_spec says:
3649 * "An INVALID_OPERATION error is generated if <first> + <count> is
3650 * greater than the number of target-specific indexed binding points,
3651 * as described in section 6.7.1."
3653 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3654 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3655 "%s(first=%u + count=%d > the value of "
3656 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3657 caller
, first
, count
,
3658 ctx
->Const
.MaxTransformFeedbackBuffers
);
3666 * Unbind all transform feedback buffers in the range
3667 * <first> through <first>+<count>-1
3670 unbind_xfb_buffers(struct gl_context
*ctx
,
3671 struct gl_transform_feedback_object
*tfObj
,
3672 GLuint first
, GLsizei count
)
3674 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3676 for (int i
= 0; i
< count
; i
++)
3677 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3682 bind_xfb_buffers(struct gl_context
*ctx
,
3683 GLuint first
, GLsizei count
,
3684 const GLuint
*buffers
,
3686 const GLintptr
*offsets
,
3687 const GLsizeiptr
*sizes
,
3690 struct gl_transform_feedback_object
*tfObj
=
3691 ctx
->TransformFeedback
.CurrentObject
;
3693 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3696 /* Assume that at least one binding will be changed */
3697 FLUSH_VERTICES(ctx
, 0);
3698 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3701 /* The ARB_multi_bind spec says:
3703 * "If <buffers> is NULL, all bindings from <first> through
3704 * <first>+<count>-1 are reset to their unbound (zero) state.
3705 * In this case, the offsets and sizes associated with the
3706 * binding points are set to default values, ignoring
3707 * <offsets> and <sizes>."
3709 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3713 /* Note that the error semantics for multi-bind commands differ from
3714 * those of other GL commands.
3716 * The Issues section in the ARB_multi_bind spec says:
3718 * "(11) Typically, OpenGL specifies that if an error is generated by a
3719 * command, that command has no effect. This is somewhat
3720 * unfortunate for multi-bind commands, because it would require a
3721 * first pass to scan the entire list of bound objects for errors
3722 * and then a second pass to actually perform the bindings.
3723 * Should we have different error semantics?
3725 * RESOLVED: Yes. In this specification, when the parameters for
3726 * one of the <count> binding points are invalid, that binding point
3727 * is not updated and an error will be generated. However, other
3728 * binding points in the same command will be updated if their
3729 * parameters are valid and no other error occurs."
3732 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3734 for (int i
= 0; i
< count
; i
++) {
3735 const GLuint index
= first
+ i
;
3736 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3737 struct gl_buffer_object
*bufObj
;
3738 GLintptr offset
= 0;
3739 GLsizeiptr size
= 0;
3742 offset
= offsets
[i
];
3745 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3748 /* The ARB_multi_bind spec says:
3750 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3751 * pair of values in <offsets> and <sizes> does not respectively
3752 * satisfy the constraints described for those parameters for the
3753 * specified target, as described in section 6.7.1 (per binding)."
3755 * Section 6.7.1 refers to table 6.5, which says:
3757 * "┌───────────────────────────────────────────────────────────────┐
3758 * │ Transform feedback array bindings (see sec. 13.2.2) │
3759 * ├───────────────────────┬───────────────────────────────────────┤
3761 * │ offset restriction │ multiple of 4 │
3763 * │ size restriction │ multiple of 4 │
3764 * └───────────────────────┴───────────────────────────────────────┘"
3766 if (offsets
[i
] & 0x3) {
3767 _mesa_error(ctx
, GL_INVALID_VALUE
,
3768 "glBindBuffersRange(offsets[%u]=%" PRId64
3769 " is misaligned; it must be a multiple of 4 when "
3770 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3771 i
, (int64_t) offsets
[i
]);
3775 if (sizes
[i
] & 0x3) {
3776 _mesa_error(ctx
, GL_INVALID_VALUE
,
3777 "glBindBuffersRange(sizes[%u]=%" PRId64
3778 " is misaligned; it must be a multiple of 4 when "
3779 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3780 i
, (int64_t) sizes
[i
]);
3784 offset
= offsets
[i
];
3788 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3789 bufObj
= boundBufObj
;
3791 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3794 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3798 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3802 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3803 GLuint first
, GLsizei count
,
3806 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3807 _mesa_error(ctx
, GL_INVALID_ENUM
,
3808 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3812 /* The ARB_multi_bind_spec says:
3814 * "An INVALID_OPERATION error is generated if <first> + <count> is
3815 * greater than the number of target-specific indexed binding points,
3816 * as described in section 6.7.1."
3818 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3819 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3820 "%s(first=%u + count=%d > the value of "
3821 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3822 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3830 * Unbind all atomic counter buffers in the range
3831 * <first> through <first>+<count>-1
3834 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3836 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3838 for (int i
= 0; i
< count
; i
++)
3839 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3844 bind_atomic_buffers(struct gl_context
*ctx
,
3847 const GLuint
*buffers
,
3849 const GLintptr
*offsets
,
3850 const GLsizeiptr
*sizes
,
3853 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3856 /* Assume that at least one binding will be changed */
3857 FLUSH_VERTICES(ctx
, 0);
3858 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3861 /* The ARB_multi_bind spec says:
3863 * "If <buffers> is NULL, all bindings from <first> through
3864 * <first>+<count>-1 are reset to their unbound (zero) state.
3865 * In this case, the offsets and sizes associated with the
3866 * binding points are set to default values, ignoring
3867 * <offsets> and <sizes>."
3869 unbind_atomic_buffers(ctx
, first
, count
);
3873 /* Note that the error semantics for multi-bind commands differ from
3874 * those of other GL commands.
3876 * The Issues section in the ARB_multi_bind spec says:
3878 * "(11) Typically, OpenGL specifies that if an error is generated by a
3879 * command, that command has no effect. This is somewhat
3880 * unfortunate for multi-bind commands, because it would require a
3881 * first pass to scan the entire list of bound objects for errors
3882 * and then a second pass to actually perform the bindings.
3883 * Should we have different error semantics?
3885 * RESOLVED: Yes. In this specification, when the parameters for
3886 * one of the <count> binding points are invalid, that binding point
3887 * is not updated and an error will be generated. However, other
3888 * binding points in the same command will be updated if their
3889 * parameters are valid and no other error occurs."
3892 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3894 for (int i
= 0; i
< count
; i
++) {
3895 struct gl_atomic_buffer_binding
*binding
=
3896 &ctx
->AtomicBufferBindings
[first
+ i
];
3897 struct gl_buffer_object
*bufObj
;
3898 GLintptr offset
= 0;
3899 GLsizeiptr size
= 0;
3902 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3905 /* The ARB_multi_bind spec says:
3907 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3908 * pair of values in <offsets> and <sizes> does not respectively
3909 * satisfy the constraints described for those parameters for the
3910 * specified target, as described in section 6.7.1 (per binding)."
3912 * Section 6.7.1 refers to table 6.5, which says:
3914 * "┌───────────────────────────────────────────────────────────────┐
3915 * │ Atomic counter array bindings (see sec. 7.7.2) │
3916 * ├───────────────────────┬───────────────────────────────────────┤
3918 * │ offset restriction │ multiple of 4 │
3920 * │ size restriction │ none │
3921 * └───────────────────────┴───────────────────────────────────────┘"
3923 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3924 _mesa_error(ctx
, GL_INVALID_VALUE
,
3925 "glBindBuffersRange(offsets[%u]=%" PRId64
3926 " is misaligned; it must be a multiple of %d when "
3927 "target=GL_ATOMIC_COUNTER_BUFFER)",
3928 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3932 offset
= offsets
[i
];
3936 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3937 bufObj
= binding
->BufferObject
;
3939 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3942 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3945 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3949 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3950 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3952 GET_CURRENT_CONTEXT(ctx
);
3953 struct gl_buffer_object
*bufObj
;
3955 if (MESA_VERBOSE
& VERBOSE_API
) {
3956 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
3957 _mesa_enum_to_string(target
), index
, buffer
,
3958 (unsigned long) offset
, (unsigned long) size
);
3962 bufObj
= ctx
->Shared
->NullBufferObj
;
3964 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3966 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3967 &bufObj
, "glBindBufferRange"))
3971 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3972 "glBindBufferRange(invalid buffer=%u)", buffer
);
3978 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3985 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3986 _mesa_bind_buffer_range_transform_feedback(ctx
,
3987 ctx
->TransformFeedback
.CurrentObject
,
3988 index
, bufObj
, offset
, size
,
3991 case GL_UNIFORM_BUFFER
:
3992 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3994 case GL_SHADER_STORAGE_BUFFER
:
3995 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3997 case GL_ATOMIC_COUNTER_BUFFER
:
3998 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3999 "glBindBufferRange");
4002 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4008 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4010 GET_CURRENT_CONTEXT(ctx
);
4011 struct gl_buffer_object
*bufObj
;
4013 if (MESA_VERBOSE
& VERBOSE_API
) {
4014 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4015 _mesa_enum_to_string(target
), index
, buffer
);
4019 bufObj
= ctx
->Shared
->NullBufferObj
;
4021 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4023 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4024 &bufObj
, "glBindBufferBase"))
4028 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4029 "glBindBufferBase(invalid buffer=%u)", buffer
);
4033 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4034 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4036 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4037 * zero and size equal to the size of buffer."
4039 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4041 * "If the parameter (starting offset or size) was not specified when the
4042 * buffer object was bound, zero is returned."
4044 * What happens if the size of the buffer changes? Does the size of the
4045 * buffer at the moment glBindBufferBase was called still play a role, like
4046 * the first quote would imply, or is the size meaningless in the
4047 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4048 * core spec page 45 says:
4050 * "It is equivalent to calling BindBufferRange with offset zero, while
4051 * size is determined by the size of the bound buffer at the time the
4054 * My interpretation is that the GL 4.1 spec was a clarification of the
4055 * behavior, not a change. In particular, this choice will only make
4056 * rendering work in cases where it would have had undefined results.
4060 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4061 _mesa_bind_buffer_base_transform_feedback(ctx
,
4062 ctx
->TransformFeedback
.CurrentObject
,
4063 index
, bufObj
, false);
4065 case GL_UNIFORM_BUFFER
:
4066 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4068 case GL_SHADER_STORAGE_BUFFER
:
4069 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4071 case GL_ATOMIC_COUNTER_BUFFER
:
4072 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
4073 "glBindBufferBase");
4076 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4082 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4083 const GLuint
*buffers
,
4084 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4086 GET_CURRENT_CONTEXT(ctx
);
4088 if (MESA_VERBOSE
& VERBOSE_API
) {
4089 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4090 _mesa_enum_to_string(target
), first
, count
,
4091 buffers
, offsets
, sizes
);
4095 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4096 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4097 "glBindBuffersRange");
4099 case GL_UNIFORM_BUFFER
:
4100 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4101 "glBindBuffersRange");
4103 case GL_SHADER_STORAGE_BUFFER
:
4104 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4105 "glBindBuffersRange");
4107 case GL_ATOMIC_COUNTER_BUFFER
:
4108 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4109 "glBindBuffersRange");
4112 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4113 _mesa_enum_to_string(target
));
4119 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4120 const GLuint
*buffers
)
4122 GET_CURRENT_CONTEXT(ctx
);
4124 if (MESA_VERBOSE
& VERBOSE_API
) {
4125 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4126 _mesa_enum_to_string(target
), first
, count
, buffers
);
4130 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4131 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4132 "glBindBuffersBase");
4134 case GL_UNIFORM_BUFFER
:
4135 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4136 "glBindBuffersBase");
4138 case GL_SHADER_STORAGE_BUFFER
:
4139 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4140 "glBindBuffersBase");
4142 case GL_ATOMIC_COUNTER_BUFFER
:
4143 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4144 "glBindBuffersBase");
4147 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4148 _mesa_enum_to_string(target
));
4154 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4157 GET_CURRENT_CONTEXT(ctx
);
4158 struct gl_buffer_object
*bufObj
;
4159 const GLintptr end
= offset
+ length
;
4161 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4162 * Profile) spec says:
4164 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4165 * name of an existing buffer object."
4167 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4168 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4169 _mesa_error(ctx
, GL_INVALID_VALUE
,
4170 "glInvalidateBufferSubData(name = %u) invalid object",
4175 /* The GL_ARB_invalidate_subdata spec says:
4177 * "An INVALID_VALUE error is generated if <offset> or <length> is
4178 * negative, or if <offset> + <length> is greater than the value of
4181 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4182 _mesa_error(ctx
, GL_INVALID_VALUE
,
4183 "glInvalidateBufferSubData(invalid offset or length)");
4187 /* The OpenGL 4.4 (Core Profile) spec says:
4189 * "An INVALID_OPERATION error is generated if buffer is currently
4190 * mapped by MapBuffer or if the invalidate range intersects the range
4191 * currently mapped by MapBufferRange, unless it was mapped
4192 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4194 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4195 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4196 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4197 "glInvalidateBufferSubData(intersection with mapped "
4202 if (ctx
->Driver
.InvalidateBufferSubData
)
4203 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4207 _mesa_InvalidateBufferData(GLuint buffer
)
4209 GET_CURRENT_CONTEXT(ctx
);
4210 struct gl_buffer_object
*bufObj
;
4212 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4213 * Profile) spec says:
4215 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4216 * name of an existing buffer object."
4218 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4219 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4220 _mesa_error(ctx
, GL_INVALID_VALUE
,
4221 "glInvalidateBufferData(name = %u) invalid object",
4226 /* The OpenGL 4.4 (Core Profile) spec says:
4228 * "An INVALID_OPERATION error is generated if buffer is currently
4229 * mapped by MapBuffer or if the invalidate range intersects the range
4230 * currently mapped by MapBufferRange, unless it was mapped
4231 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4233 if (_mesa_check_disallowed_mapping(bufObj
)) {
4234 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4235 "glInvalidateBufferData(intersection with mapped "
4240 if (ctx
->Driver
.InvalidateBufferSubData
)
4241 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, 0, bufObj
->Size
);
4245 buffer_page_commitment(struct gl_context
*ctx
,
4246 struct gl_buffer_object
*bufferObj
,
4247 GLintptr offset
, GLsizeiptr size
,
4248 GLboolean commit
, const char *func
)
4250 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4251 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4256 if (size
< 0 || size
> bufferObj
->Size
||
4257 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4258 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4263 /* The GL_ARB_sparse_buffer extension specification says:
4265 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4266 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4267 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4268 * not extend to the end of the buffer's data store."
4270 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4271 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4276 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4277 offset
+ size
!= bufferObj
->Size
) {
4278 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4283 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4287 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4290 GET_CURRENT_CONTEXT(ctx
);
4291 struct gl_buffer_object
*bufferObj
;
4293 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4298 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4299 "glBufferPageCommitmentARB");
4303 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4304 GLsizeiptr size
, GLboolean commit
)
4306 GET_CURRENT_CONTEXT(ctx
);
4307 struct gl_buffer_object
*bufferObj
;
4309 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4310 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4311 /* Note: the extension spec is not clear about the excpected error value. */
4312 _mesa_error(ctx
, GL_INVALID_VALUE
,
4313 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4318 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4319 "glNamedBufferPageCommitmentARB");