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_no_error(GLenum target
, GLuint buffer
)
1234 GET_CURRENT_CONTEXT(ctx
);
1236 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1237 bind_buffer_object(ctx
, bindTarget
, buffer
);
1242 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1244 GET_CURRENT_CONTEXT(ctx
);
1246 if (MESA_VERBOSE
& VERBOSE_API
) {
1247 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1248 _mesa_enum_to_string(target
), buffer
);
1251 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1253 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1254 _mesa_enum_to_string(target
));
1258 bind_buffer_object(ctx
, bindTarget
, buffer
);
1263 * Delete a set of buffer objects.
1265 * \param n Number of buffer objects to delete.
1266 * \param ids Array of \c n buffer object IDs.
1269 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1271 GET_CURRENT_CONTEXT(ctx
);
1273 FLUSH_VERTICES(ctx
, 0);
1276 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1280 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1282 for (i
= 0; i
< n
; i
++) {
1283 struct gl_buffer_object
*bufObj
=
1284 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1286 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1289 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1291 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1293 /* unbind any vertex pointers bound to this buffer */
1294 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1295 unbind(ctx
, vao
, j
, bufObj
);
1298 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1299 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1301 if (vao
->IndexBufferObj
== bufObj
) {
1302 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1305 /* unbind ARB_draw_indirect binding point */
1306 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1307 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1310 /* unbind ARB_indirect_parameters binding point */
1311 if (ctx
->ParameterBuffer
== bufObj
) {
1312 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1315 /* unbind ARB_compute_shader binding point */
1316 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1317 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1320 /* unbind ARB_copy_buffer binding points */
1321 if (ctx
->CopyReadBuffer
== bufObj
) {
1322 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1324 if (ctx
->CopyWriteBuffer
== bufObj
) {
1325 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1328 /* unbind transform feedback binding points */
1329 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1330 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1332 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1333 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1334 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1338 /* unbind UBO binding points */
1339 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1340 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1341 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1345 if (ctx
->UniformBuffer
== bufObj
) {
1346 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1349 /* unbind SSBO binding points */
1350 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1351 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1352 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1356 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1357 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1360 /* unbind Atomci Buffer binding points */
1361 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1362 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1363 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1367 if (ctx
->AtomicBuffer
== bufObj
) {
1368 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1371 /* unbind any pixel pack/unpack pointers bound to this buffer */
1372 if (ctx
->Pack
.BufferObj
== bufObj
) {
1373 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1375 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1376 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1379 if (ctx
->Texture
.BufferObject
== bufObj
) {
1380 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1383 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1384 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1387 /* unbind query buffer binding point */
1388 if (ctx
->QueryBuffer
== bufObj
) {
1389 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1392 /* The ID is immediately freed for re-use */
1393 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1394 /* Make sure we do not run into the classic ABA problem on bind.
1395 * We don't want to allow re-binding a buffer object that's been
1396 * "deleted" by glDeleteBuffers().
1398 * The explicit rebinding to the default object in the current context
1399 * prevents the above in the current context, but another context
1400 * sharing the same objects might suffer from this problem.
1401 * The alternative would be to do the hash lookup in any case on bind
1402 * which would introduce more runtime overhead than this.
1404 bufObj
->DeletePending
= GL_TRUE
;
1405 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1409 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1414 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1415 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1419 create_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1422 struct gl_buffer_object
*buf
;
1428 * This must be atomic (generation and allocation of buffer object IDs)
1430 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1432 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1434 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1435 * DummyBufferObject. Otherwise, create a new buffer object and insert
1438 for (int i
= 0; i
< n
; i
++) {
1439 buffers
[i
] = first
+ i
;
1441 assert(ctx
->Driver
.NewBufferObject
);
1442 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1444 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCreateBuffers");
1445 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1450 buf
= &DummyBufferObject
;
1452 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1455 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1460 create_buffers_err(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1462 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1464 if (MESA_VERBOSE
& VERBOSE_API
)
1465 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1468 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1472 create_buffers(ctx
, n
, buffers
, dsa
);
1476 * Generate a set of unique buffer object IDs and store them in \c buffers.
1478 * \param n Number of IDs to generate.
1479 * \param buffers Array of \c n locations to store the IDs.
1482 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1484 GET_CURRENT_CONTEXT(ctx
);
1485 create_buffers_err(ctx
, n
, buffers
, false);
1489 * Create a set of buffer objects and store their unique IDs in \c buffers.
1491 * \param n Number of IDs to generate.
1492 * \param buffers Array of \c n locations to store the IDs.
1495 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1497 GET_CURRENT_CONTEXT(ctx
);
1498 create_buffers_err(ctx
, n
, buffers
, true);
1503 * Determine if ID is the name of a buffer object.
1505 * \param id ID of the potential buffer object.
1506 * \return \c GL_TRUE if \c id is the name of a buffer object,
1507 * \c GL_FALSE otherwise.
1509 GLboolean GLAPIENTRY
1510 _mesa_IsBuffer(GLuint id
)
1512 struct gl_buffer_object
*bufObj
;
1513 GET_CURRENT_CONTEXT(ctx
);
1514 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1516 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1518 return bufObj
&& bufObj
!= &DummyBufferObject
;
1523 validate_buffer_storage(struct gl_context
*ctx
,
1524 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1525 GLbitfield flags
, const char *func
)
1528 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1532 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1534 GL_MAP_PERSISTENT_BIT
|
1535 GL_MAP_COHERENT_BIT
|
1536 GL_DYNAMIC_STORAGE_BIT
|
1537 GL_CLIENT_STORAGE_BIT
;
1539 if (ctx
->Extensions
.ARB_sparse_buffer
)
1540 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1542 if (flags
& ~valid_flags
) {
1543 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1547 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1549 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1550 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1551 * MAP_READ_BIT or MAP_WRITE_BIT."
1553 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1554 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1555 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1559 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1560 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1561 _mesa_error(ctx
, GL_INVALID_VALUE
,
1562 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1566 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1567 _mesa_error(ctx
, GL_INVALID_VALUE
,
1568 "%s(COHERENT and flags!=PERSISTENT)", func
);
1572 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1573 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1582 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1583 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1584 GLbitfield flags
, const char *func
)
1586 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1587 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1589 FLUSH_VERTICES(ctx
, 0);
1591 bufObj
->Written
= GL_TRUE
;
1592 bufObj
->Immutable
= GL_TRUE
;
1593 bufObj
->MinMaxCacheDirty
= true;
1595 assert(ctx
->Driver
.BufferData
);
1596 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1598 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1599 /* Even though the interaction between AMD_pinned_memory and
1600 * glBufferStorage is not described in the spec, Graham Sellers
1601 * said that it should behave the same as glBufferData.
1603 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1606 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1612 static ALWAYS_INLINE
void
1613 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1614 const GLvoid
*data
, GLbitfield flags
, bool dsa
,
1615 bool no_error
, const char *func
)
1617 GET_CURRENT_CONTEXT(ctx
);
1618 struct gl_buffer_object
*bufObj
;
1622 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1624 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1630 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1631 bufObj
= *bufObjPtr
;
1633 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1639 if (no_error
|| validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1640 buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
, func
);
1645 _mesa_BufferStorage_no_error(GLenum target
, GLsizeiptr size
,
1646 const GLvoid
*data
, GLbitfield flags
)
1648 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, true,
1654 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1657 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, false,
1663 _mesa_NamedBufferStorage_no_error(GLuint buffer
, GLsizeiptr size
,
1664 const GLvoid
*data
, GLbitfield flags
)
1666 /* In direct state access, buffer objects have an unspecified target
1667 * since they are not required to be bound.
1669 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, true,
1670 "glNamedBufferStorage");
1675 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1678 /* In direct state access, buffer objects have an unspecified target
1679 * since they are not required to be bound.
1681 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, false,
1682 "glNamedBufferStorage");
1687 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1688 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1689 GLenum usage
, const char *func
)
1693 if (MESA_VERBOSE
& VERBOSE_API
) {
1694 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1696 _mesa_enum_to_string(target
),
1697 (long int) size
, data
,
1698 _mesa_enum_to_string(usage
));
1702 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1707 case GL_STREAM_DRAW_ARB
:
1708 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1711 case GL_STATIC_DRAW_ARB
:
1712 case GL_DYNAMIC_DRAW_ARB
:
1716 case GL_STREAM_READ_ARB
:
1717 case GL_STREAM_COPY_ARB
:
1718 case GL_STATIC_READ_ARB
:
1719 case GL_STATIC_COPY_ARB
:
1720 case GL_DYNAMIC_READ_ARB
:
1721 case GL_DYNAMIC_COPY_ARB
:
1722 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1726 valid_usage
= false;
1731 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1732 _mesa_enum_to_string(usage
));
1736 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1737 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1741 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1742 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1744 FLUSH_VERTICES(ctx
, 0);
1746 bufObj
->Written
= GL_TRUE
;
1747 bufObj
->MinMaxCacheDirty
= true;
1750 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1751 bufObj
->Name
, size
, data
, usage
);
1758 assert(ctx
->Driver
.BufferData
);
1759 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1762 GL_DYNAMIC_STORAGE_BIT
,
1764 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1765 /* From GL_AMD_pinned_memory:
1767 * INVALID_OPERATION is generated by BufferData if <target> is
1768 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1769 * mapped to the GPU address space.
1771 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1774 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1780 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1781 const GLvoid
*data
, GLenum usage
)
1783 GET_CURRENT_CONTEXT(ctx
);
1784 struct gl_buffer_object
*bufObj
;
1786 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1790 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1795 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1798 GET_CURRENT_CONTEXT(ctx
);
1799 struct gl_buffer_object
*bufObj
;
1801 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1805 /* In direct state access, buffer objects have an unspecified target since
1806 * they are not required to be bound.
1808 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1809 "glNamedBufferData");
1814 validate_buffer_sub_data(struct gl_context
*ctx
,
1815 struct gl_buffer_object
*bufObj
,
1816 GLintptr offset
, GLsizeiptr size
,
1819 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1821 /* error already recorded */
1825 if (bufObj
->Immutable
&&
1826 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1827 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1831 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1832 bufObj
->Usage
== GL_STATIC_COPY
) &&
1833 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
- 1) {
1834 /* If the application declared the buffer as static draw/copy or stream
1835 * draw, it should not be frequently modified with glBufferSubData.
1837 BUFFER_USAGE_WARNING(ctx
,
1838 "using %s(buffer %u, offset %u, size %u) to "
1839 "update a %s buffer",
1840 func
, bufObj
->Name
, offset
, size
,
1841 _mesa_enum_to_string(bufObj
->Usage
));
1849 * Implementation for glBufferSubData and glNamedBufferSubData.
1851 * \param ctx GL context.
1852 * \param bufObj The buffer object.
1853 * \param offset Offset of the first byte of the subdata range.
1854 * \param size Size, in bytes, of the subdata range.
1855 * \param data The data store.
1856 * \param func Name of calling function for recording errors.
1860 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1861 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
)
1866 bufObj
->NumSubDataCalls
++;
1867 bufObj
->Written
= GL_TRUE
;
1868 bufObj
->MinMaxCacheDirty
= true;
1870 assert(ctx
->Driver
.BufferSubData
);
1871 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1875 static ALWAYS_INLINE
void
1876 buffer_sub_data(GLenum target
, GLuint buffer
, GLintptr offset
,
1877 GLsizeiptr size
, const GLvoid
*data
,
1878 bool dsa
, bool no_error
, const char *func
)
1880 GET_CURRENT_CONTEXT(ctx
);
1881 struct gl_buffer_object
*bufObj
;
1885 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1887 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1893 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1894 bufObj
= *bufObjPtr
;
1896 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1902 if (no_error
|| validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
1903 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
1908 _mesa_BufferSubData_no_error(GLenum target
, GLintptr offset
,
1909 GLsizeiptr size
, const GLvoid
*data
)
1911 buffer_sub_data(target
, 0, offset
, size
, data
, false, true,
1917 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1918 GLsizeiptr size
, const GLvoid
*data
)
1920 buffer_sub_data(target
, 0, offset
, size
, data
, false, false,
1925 _mesa_NamedBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
1926 GLsizeiptr size
, const GLvoid
*data
)
1928 buffer_sub_data(0, buffer
, offset
, size
, data
, true, true,
1929 "glNamedBufferSubData");
1933 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1934 GLsizeiptr size
, const GLvoid
*data
)
1936 buffer_sub_data(0, buffer
, offset
, size
, data
, true, false,
1937 "glNamedBufferSubData");
1942 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1943 GLsizeiptr size
, GLvoid
*data
)
1945 GET_CURRENT_CONTEXT(ctx
);
1946 struct gl_buffer_object
*bufObj
;
1948 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1949 GL_INVALID_OPERATION
);
1953 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1954 "glGetBufferSubData")) {
1958 assert(ctx
->Driver
.GetBufferSubData
);
1959 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1963 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1964 GLsizeiptr size
, GLvoid
*data
)
1966 GET_CURRENT_CONTEXT(ctx
);
1967 struct gl_buffer_object
*bufObj
;
1969 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1970 "glGetNamedBufferSubData");
1974 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1975 "glGetNamedBufferSubData")) {
1979 assert(ctx
->Driver
.GetBufferSubData
);
1980 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1985 * \param subdata true if caller is *SubData, false if *Data
1988 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1989 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
1990 GLenum format
, GLenum type
, const GLvoid
*data
,
1991 const char *func
, bool subdata
)
1993 mesa_format mesaFormat
;
1994 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1995 GLsizeiptr clearValueSize
;
1997 /* This checks for disallowed mappings. */
1998 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2003 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
2004 format
, type
, func
);
2006 if (mesaFormat
== MESA_FORMAT_NONE
) {
2010 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
2011 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
2012 _mesa_error(ctx
, GL_INVALID_VALUE
,
2013 "%s(offset or size is not a multiple of "
2014 "internalformat size)", func
);
2018 /* Bail early. Negative size has already been checked. */
2022 bufObj
->MinMaxCacheDirty
= true;
2025 /* clear to zeros, per the spec */
2026 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2027 NULL
, clearValueSize
, bufObj
);
2031 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
2032 format
, type
, data
, func
)) {
2036 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2037 clearValue
, clearValueSize
, bufObj
);
2041 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
2042 GLenum type
, const GLvoid
*data
)
2044 GET_CURRENT_CONTEXT(ctx
);
2045 struct gl_buffer_object
*bufObj
;
2047 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2051 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2052 format
, type
, data
, "glClearBufferData", false);
2056 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2057 GLenum format
, GLenum type
, const GLvoid
*data
)
2059 GET_CURRENT_CONTEXT(ctx
);
2060 struct gl_buffer_object
*bufObj
;
2062 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2066 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2067 format
, type
, data
, "glClearNamedBufferData", false);
2072 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2073 GLintptr offset
, GLsizeiptr size
,
2074 GLenum format
, GLenum type
,
2077 GET_CURRENT_CONTEXT(ctx
);
2078 struct gl_buffer_object
*bufObj
;
2080 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2084 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2085 format
, type
, data
, "glClearBufferSubData", true);
2089 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2090 GLintptr offset
, GLsizeiptr size
,
2091 GLenum format
, GLenum type
,
2094 GET_CURRENT_CONTEXT(ctx
);
2095 struct gl_buffer_object
*bufObj
;
2097 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2098 "glClearNamedBufferSubData");
2102 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2103 type
, data
, "glClearNamedBufferSubData", true);
2107 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2109 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2110 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2111 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2112 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2113 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2119 validate_and_unmap_buffer(struct gl_context
*ctx
,
2120 struct gl_buffer_object
*bufObj
,
2123 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2125 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2126 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2127 "%s(buffer is not mapped)", func
);
2132 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2133 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2135 /* check that last 100 bytes are still = magic value */
2136 for (i
= 0; i
< 100; i
++) {
2137 GLuint pos
= bufObj
->Size
- i
- 1;
2138 if (buf
[pos
] != 123) {
2139 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2140 " at position %d (value = %u)\n",
2148 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2149 GLuint i
, unchanged
= 0;
2150 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2152 /* check which bytes changed */
2153 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2154 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2161 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2162 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2167 return unmap_buffer(ctx
, bufObj
);
2170 GLboolean GLAPIENTRY
2171 _mesa_UnmapBuffer_no_error(GLenum target
)
2173 GET_CURRENT_CONTEXT(ctx
);
2174 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2175 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2177 return unmap_buffer(ctx
, bufObj
);
2180 GLboolean GLAPIENTRY
2181 _mesa_UnmapBuffer(GLenum target
)
2183 GET_CURRENT_CONTEXT(ctx
);
2184 struct gl_buffer_object
*bufObj
;
2186 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2190 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2193 GLboolean GLAPIENTRY
2194 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2196 GET_CURRENT_CONTEXT(ctx
);
2197 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2199 return unmap_buffer(ctx
, bufObj
);
2202 GLboolean GLAPIENTRY
2203 _mesa_UnmapNamedBuffer(GLuint buffer
)
2205 GET_CURRENT_CONTEXT(ctx
);
2206 struct gl_buffer_object
*bufObj
;
2208 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2212 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2217 get_buffer_parameter(struct gl_context
*ctx
,
2218 struct gl_buffer_object
*bufObj
, GLenum pname
,
2219 GLint64
*params
, const char *func
)
2222 case GL_BUFFER_SIZE_ARB
:
2223 *params
= bufObj
->Size
;
2225 case GL_BUFFER_USAGE_ARB
:
2226 *params
= bufObj
->Usage
;
2228 case GL_BUFFER_ACCESS_ARB
:
2229 *params
= simplified_access_mode(ctx
,
2230 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2232 case GL_BUFFER_MAPPED_ARB
:
2233 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2235 case GL_BUFFER_ACCESS_FLAGS
:
2236 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2238 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2240 case GL_BUFFER_MAP_OFFSET
:
2241 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2243 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2245 case GL_BUFFER_MAP_LENGTH
:
2246 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2248 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2250 case GL_BUFFER_IMMUTABLE_STORAGE
:
2251 if (!ctx
->Extensions
.ARB_buffer_storage
)
2253 *params
= bufObj
->Immutable
;
2255 case GL_BUFFER_STORAGE_FLAGS
:
2256 if (!ctx
->Extensions
.ARB_buffer_storage
)
2258 *params
= bufObj
->StorageFlags
;
2267 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2268 _mesa_enum_to_string(pname
));
2273 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2275 GET_CURRENT_CONTEXT(ctx
);
2276 struct gl_buffer_object
*bufObj
;
2279 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2280 GL_INVALID_OPERATION
);
2284 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2285 "glGetBufferParameteriv"))
2286 return; /* Error already recorded. */
2288 *params
= (GLint
) parameter
;
2292 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2294 GET_CURRENT_CONTEXT(ctx
);
2295 struct gl_buffer_object
*bufObj
;
2298 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2299 GL_INVALID_OPERATION
);
2303 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2304 "glGetBufferParameteri64v"))
2305 return; /* Error already recorded. */
2307 *params
= parameter
;
2311 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2313 GET_CURRENT_CONTEXT(ctx
);
2314 struct gl_buffer_object
*bufObj
;
2317 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2318 "glGetNamedBufferParameteriv");
2322 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2323 "glGetNamedBufferParameteriv"))
2324 return; /* Error already recorded. */
2326 *params
= (GLint
) parameter
;
2330 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2333 GET_CURRENT_CONTEXT(ctx
);
2334 struct gl_buffer_object
*bufObj
;
2337 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2338 "glGetNamedBufferParameteri64v");
2342 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2343 "glGetNamedBufferParameteri64v"))
2344 return; /* Error already recorded. */
2346 *params
= parameter
;
2351 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2353 GET_CURRENT_CONTEXT(ctx
);
2354 struct gl_buffer_object
*bufObj
;
2356 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2357 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2358 "GL_BUFFER_MAP_POINTER)");
2362 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2363 GL_INVALID_OPERATION
);
2367 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2371 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2373 GET_CURRENT_CONTEXT(ctx
);
2374 struct gl_buffer_object
*bufObj
;
2376 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2377 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2378 "GL_BUFFER_MAP_POINTER)");
2382 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2383 "glGetNamedBufferPointerv");
2387 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2392 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2393 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2394 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2396 if (_mesa_check_disallowed_mapping(src
)) {
2397 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2398 "%s(readBuffer is mapped)", func
);
2402 if (_mesa_check_disallowed_mapping(dst
)) {
2403 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2404 "%s(writeBuffer is mapped)", func
);
2408 if (readOffset
< 0) {
2409 _mesa_error(ctx
, GL_INVALID_VALUE
,
2410 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2414 if (writeOffset
< 0) {
2415 _mesa_error(ctx
, GL_INVALID_VALUE
,
2416 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2421 _mesa_error(ctx
, GL_INVALID_VALUE
,
2422 "%s(size %d < 0)", func
, (int) size
);
2426 if (readOffset
+ size
> src
->Size
) {
2427 _mesa_error(ctx
, GL_INVALID_VALUE
,
2428 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2429 (int) readOffset
, (int) size
, (int) src
->Size
);
2433 if (writeOffset
+ size
> dst
->Size
) {
2434 _mesa_error(ctx
, GL_INVALID_VALUE
,
2435 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2436 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2441 if (readOffset
+ size
<= writeOffset
) {
2444 else if (writeOffset
+ size
<= readOffset
) {
2448 /* overlapping src/dst is illegal */
2449 _mesa_error(ctx
, GL_INVALID_VALUE
,
2450 "%s(overlapping src/dst)", func
);
2455 dst
->MinMaxCacheDirty
= true;
2457 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2461 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2462 GLintptr readOffset
, GLintptr writeOffset
,
2465 GET_CURRENT_CONTEXT(ctx
);
2467 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2468 struct gl_buffer_object
*src
= *src_ptr
;
2470 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2471 struct gl_buffer_object
*dst
= *dst_ptr
;
2473 dst
->MinMaxCacheDirty
= true;
2474 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2479 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2480 GLintptr readOffset
, GLintptr writeOffset
,
2483 GET_CURRENT_CONTEXT(ctx
);
2484 struct gl_buffer_object
*src
, *dst
;
2486 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2487 GL_INVALID_OPERATION
);
2491 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2492 GL_INVALID_OPERATION
);
2496 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2497 "glCopyBufferSubData");
2501 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2502 GLintptr readOffset
,
2503 GLintptr writeOffset
, GLsizeiptr size
)
2505 GET_CURRENT_CONTEXT(ctx
);
2507 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2508 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2510 dst
->MinMaxCacheDirty
= true;
2511 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2516 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2517 GLintptr readOffset
, GLintptr writeOffset
,
2520 GET_CURRENT_CONTEXT(ctx
);
2521 struct gl_buffer_object
*src
, *dst
;
2523 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2524 "glCopyNamedBufferSubData");
2528 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2529 "glCopyNamedBufferSubData");
2533 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2534 "glCopyNamedBufferSubData");
2538 validate_map_buffer_range(struct gl_context
*ctx
,
2539 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2540 GLsizeiptr length
, GLbitfield access
,
2543 GLbitfield allowed_access
;
2545 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2548 _mesa_error(ctx
, GL_INVALID_VALUE
,
2549 "%s(offset %ld < 0)", func
, (long) offset
);
2554 _mesa_error(ctx
, GL_INVALID_VALUE
,
2555 "%s(length %ld < 0)", func
, (long) length
);
2559 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2561 * "An INVALID_OPERATION error is generated for any of the following
2564 * * <length> is zero."
2566 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2567 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2571 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2575 allowed_access
= GL_MAP_READ_BIT
|
2577 GL_MAP_INVALIDATE_RANGE_BIT
|
2578 GL_MAP_INVALIDATE_BUFFER_BIT
|
2579 GL_MAP_FLUSH_EXPLICIT_BIT
|
2580 GL_MAP_UNSYNCHRONIZED_BIT
;
2582 if (ctx
->Extensions
.ARB_buffer_storage
) {
2583 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2584 GL_MAP_COHERENT_BIT
;
2587 if (access
& ~allowed_access
) {
2588 /* generate an error if any bits other than those allowed are set */
2589 _mesa_error(ctx
, GL_INVALID_VALUE
,
2590 "%s(access has undefined bits set)", func
);
2594 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2595 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2596 "%s(access indicates neither read or write)", func
);
2600 if ((access
& GL_MAP_READ_BIT
) &&
2601 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2602 GL_MAP_INVALIDATE_BUFFER_BIT
|
2603 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2604 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2605 "%s(read access with disallowed bits)", func
);
2609 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2610 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2611 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2612 "%s(access has flush explicit without write)", func
);
2616 if (access
& GL_MAP_READ_BIT
&&
2617 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2618 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2619 "%s(buffer does not allow read access)", func
);
2623 if (access
& GL_MAP_WRITE_BIT
&&
2624 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2625 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2626 "%s(buffer does not allow write access)", func
);
2630 if (access
& GL_MAP_COHERENT_BIT
&&
2631 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2632 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2633 "%s(buffer does not allow coherent access)", func
);
2637 if (access
& GL_MAP_PERSISTENT_BIT
&&
2638 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2639 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2640 "%s(buffer does not allow persistent access)", func
);
2644 if (offset
+ length
> bufObj
->Size
) {
2645 _mesa_error(ctx
, GL_INVALID_VALUE
,
2646 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2647 (unsigned long) offset
, (unsigned long) length
,
2648 (unsigned long) bufObj
->Size
);
2652 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2653 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2654 "%s(buffer already mapped)", func
);
2658 if (access
& GL_MAP_WRITE_BIT
) {
2659 bufObj
->NumMapBufferWriteCalls
++;
2660 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2661 bufObj
->Usage
== GL_STATIC_COPY
) &&
2662 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2663 BUFFER_USAGE_WARNING(ctx
,
2664 "using %s(buffer %u, offset %u, length %u) to "
2665 "update a %s buffer",
2666 func
, bufObj
->Name
, offset
, length
,
2667 _mesa_enum_to_string(bufObj
->Usage
));
2675 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2676 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2679 if (!bufObj
->Size
) {
2680 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2684 assert(ctx
->Driver
.MapBufferRange
);
2685 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2688 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2691 /* The driver callback should have set all these fields.
2692 * This is important because other modules (like VBO) might call
2693 * the driver function directly.
2695 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2696 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2697 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2698 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2701 if (access
& GL_MAP_WRITE_BIT
) {
2702 bufObj
->Written
= GL_TRUE
;
2703 bufObj
->MinMaxCacheDirty
= true;
2707 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2708 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2709 bufObj
->Name
, bufObj
->Size
, access
);
2710 /* Access must be write only */
2711 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2713 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2714 for (i
= 0; i
< bufObj
->Size
; i
++)
2721 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2722 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2724 /* buffer is 100 bytes larger than requested, fill with magic value */
2725 for (i
= 0; i
< 100; i
++) {
2726 buf
[bufObj
->Size
- i
- 1] = 123;
2735 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
2736 GLsizeiptr length
, GLbitfield access
)
2738 GET_CURRENT_CONTEXT(ctx
);
2740 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2741 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2743 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2744 "glMapBufferRange");
2748 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2751 GET_CURRENT_CONTEXT(ctx
);
2752 struct gl_buffer_object
*bufObj
;
2754 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2755 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2756 "glMapBufferRange(ARB_map_buffer_range not supported)");
2760 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2764 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2765 "glMapBufferRange"))
2768 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2769 "glMapBufferRange");
2773 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2774 GLsizeiptr length
, GLbitfield access
)
2776 GET_CURRENT_CONTEXT(ctx
);
2777 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2779 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2780 "glMapNamedBufferRange");
2784 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2787 GET_CURRENT_CONTEXT(ctx
);
2788 struct gl_buffer_object
*bufObj
;
2790 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2791 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2792 "glMapNamedBufferRange("
2793 "ARB_map_buffer_range not supported)");
2797 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2801 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2802 "glMapNamedBufferRange"))
2805 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2806 "glMapNamedBufferRange");
2810 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2811 * flags for input to map_buffer_range.
2813 * \return true if the type of requested access is permissible.
2816 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2820 case GL_READ_ONLY_ARB
:
2821 *flags
= GL_MAP_READ_BIT
;
2822 return _mesa_is_desktop_gl(ctx
);
2823 case GL_WRITE_ONLY_ARB
:
2824 *flags
= GL_MAP_WRITE_BIT
;
2826 case GL_READ_WRITE_ARB
:
2827 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2828 return _mesa_is_desktop_gl(ctx
);
2835 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
2837 GET_CURRENT_CONTEXT(ctx
);
2839 GLbitfield accessFlags
;
2840 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2842 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2843 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2845 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2850 _mesa_MapBuffer(GLenum target
, GLenum access
)
2852 GET_CURRENT_CONTEXT(ctx
);
2853 struct gl_buffer_object
*bufObj
;
2854 GLbitfield accessFlags
;
2856 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2857 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2861 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2865 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2869 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2874 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
2876 GET_CURRENT_CONTEXT(ctx
);
2878 GLbitfield accessFlags
;
2879 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2881 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2883 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2884 "glMapNamedBuffer");
2888 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2890 GET_CURRENT_CONTEXT(ctx
);
2891 struct gl_buffer_object
*bufObj
;
2892 GLbitfield accessFlags
;
2894 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2895 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2899 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2903 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2904 "glMapNamedBuffer"))
2907 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2908 "glMapNamedBuffer");
2913 flush_mapped_buffer_range(struct gl_context
*ctx
,
2914 struct gl_buffer_object
*bufObj
,
2915 GLintptr offset
, GLsizeiptr length
,
2918 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2919 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2920 "%s(ARB_map_buffer_range not supported)", func
);
2925 _mesa_error(ctx
, GL_INVALID_VALUE
,
2926 "%s(offset %ld < 0)", func
, (long) offset
);
2931 _mesa_error(ctx
, GL_INVALID_VALUE
,
2932 "%s(length %ld < 0)", func
, (long) length
);
2936 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2937 /* buffer is not mapped */
2938 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2939 "%s(buffer is not mapped)", func
);
2943 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2944 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2945 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2946 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2950 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2951 _mesa_error(ctx
, GL_INVALID_VALUE
,
2952 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2953 (long) offset
, (long) length
,
2954 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2958 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2960 if (ctx
->Driver
.FlushMappedBufferRange
)
2961 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2966 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
2969 GET_CURRENT_CONTEXT(ctx
);
2970 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2971 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2973 if (ctx
->Driver
.FlushMappedBufferRange
)
2974 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2979 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2982 GET_CURRENT_CONTEXT(ctx
);
2983 struct gl_buffer_object
*bufObj
;
2985 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2986 GL_INVALID_OPERATION
);
2990 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2991 "glFlushMappedBufferRange");
2995 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2998 GET_CURRENT_CONTEXT(ctx
);
2999 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3001 if (ctx
->Driver
.FlushMappedBufferRange
)
3002 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3007 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
3010 GET_CURRENT_CONTEXT(ctx
);
3011 struct gl_buffer_object
*bufObj
;
3013 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
3014 "glFlushMappedNamedBufferRange");
3018 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3019 "glFlushMappedNamedBufferRange");
3024 * Binds a buffer object to a uniform buffer binding point.
3026 * The caller is responsible for flushing vertices and updating
3030 set_ubo_binding(struct gl_context
*ctx
,
3031 struct gl_uniform_buffer_binding
*binding
,
3032 struct gl_buffer_object
*bufObj
,
3037 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3039 binding
->Offset
= offset
;
3040 binding
->Size
= size
;
3041 binding
->AutomaticSize
= autoSize
;
3043 /* If this is a real buffer object, mark it has having been used
3044 * at some point as a UBO.
3047 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
3051 * Binds a buffer object to a shader storage buffer binding point.
3053 * The caller is responsible for flushing vertices and updating
3057 set_ssbo_binding(struct gl_context
*ctx
,
3058 struct gl_shader_storage_buffer_binding
*binding
,
3059 struct gl_buffer_object
*bufObj
,
3064 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3066 binding
->Offset
= offset
;
3067 binding
->Size
= size
;
3068 binding
->AutomaticSize
= autoSize
;
3070 /* If this is a real buffer object, mark it has having been used
3071 * at some point as a SSBO.
3074 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
3078 * Binds a buffer object to a uniform buffer binding point.
3080 * Unlike set_ubo_binding(), this function also flushes vertices
3081 * and updates NewDriverState. It also checks if the binding
3082 * has actually changed before updating it.
3085 bind_uniform_buffer(struct gl_context
*ctx
,
3087 struct gl_buffer_object
*bufObj
,
3092 struct gl_uniform_buffer_binding
*binding
=
3093 &ctx
->UniformBufferBindings
[index
];
3095 if (binding
->BufferObject
== bufObj
&&
3096 binding
->Offset
== offset
&&
3097 binding
->Size
== size
&&
3098 binding
->AutomaticSize
== autoSize
) {
3102 FLUSH_VERTICES(ctx
, 0);
3103 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3105 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3109 * Binds a buffer object to a shader storage buffer binding point.
3111 * Unlike set_ssbo_binding(), this function also flushes vertices
3112 * and updates NewDriverState. It also checks if the binding
3113 * has actually changed before updating it.
3116 bind_shader_storage_buffer(struct gl_context
*ctx
,
3118 struct gl_buffer_object
*bufObj
,
3123 struct gl_shader_storage_buffer_binding
*binding
=
3124 &ctx
->ShaderStorageBufferBindings
[index
];
3126 if (binding
->BufferObject
== bufObj
&&
3127 binding
->Offset
== offset
&&
3128 binding
->Size
== size
&&
3129 binding
->AutomaticSize
== autoSize
) {
3133 FLUSH_VERTICES(ctx
, 0);
3134 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3136 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3140 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
, GLuint index
,
3141 struct gl_buffer_object
*bufObj
,
3142 GLintptr offset
, GLsizeiptr size
)
3144 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3149 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3150 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3154 * Bind a region of a buffer object to a uniform block binding point.
3155 * \param index the uniform buffer binding point index
3156 * \param bufObj the buffer object
3157 * \param offset offset to the start of buffer object region
3158 * \param size size of the buffer object region
3161 bind_buffer_range_uniform_buffer_err(struct gl_context
*ctx
, GLuint index
,
3162 struct gl_buffer_object
*bufObj
,
3163 GLintptr offset
, GLsizeiptr size
)
3165 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3166 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3170 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3171 _mesa_error(ctx
, GL_INVALID_VALUE
,
3172 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3173 ctx
->Const
.UniformBufferOffsetAlignment
);
3177 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3181 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3183 struct gl_buffer_object
*bufObj
,
3187 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3192 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3193 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3197 * Bind a region of a buffer object to a shader storage block binding point.
3198 * \param index the shader storage buffer binding point index
3199 * \param bufObj the buffer object
3200 * \param offset offset to the start of buffer object region
3201 * \param size size of the buffer object region
3204 bind_buffer_range_shader_storage_buffer_err(struct gl_context
*ctx
,
3206 struct gl_buffer_object
*bufObj
,
3207 GLintptr offset
, GLsizeiptr size
)
3209 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3210 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3214 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3215 _mesa_error(ctx
, GL_INVALID_VALUE
,
3216 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3217 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3221 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3225 * Bind a buffer object to a uniform block binding point.
3226 * As above, but offset = 0.
3229 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
3231 struct gl_buffer_object
*bufObj
)
3233 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3234 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3238 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3240 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3241 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3243 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3247 * Bind a buffer object to a shader storage block binding point.
3248 * As above, but offset = 0.
3251 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
3253 struct gl_buffer_object
*bufObj
)
3255 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3256 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3260 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3262 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3263 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3265 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3269 * Binds a buffer object to an atomic buffer binding point.
3271 * The caller is responsible for validating the offset,
3272 * flushing the vertices and updating NewDriverState.
3275 set_atomic_buffer_binding(struct gl_context
*ctx
,
3276 struct gl_atomic_buffer_binding
*binding
,
3277 struct gl_buffer_object
*bufObj
,
3281 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3283 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3284 binding
->Offset
= 0;
3287 binding
->Offset
= offset
;
3288 binding
->Size
= size
;
3289 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3294 bind_atomic_buffer(struct gl_context
*ctx
, unsigned index
,
3295 struct gl_buffer_object
*bufObj
, GLintptr offset
,
3298 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3300 struct gl_atomic_buffer_binding
*binding
=
3301 &ctx
->AtomicBufferBindings
[index
];
3302 if (binding
->BufferObject
== bufObj
&&
3303 binding
->Offset
== offset
&&
3304 binding
->Size
== size
) {
3308 FLUSH_VERTICES(ctx
, 0);
3309 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3311 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3315 * Binds a buffer object to an atomic buffer binding point.
3317 * Unlike set_atomic_buffer_binding(), this function also validates the
3318 * index and offset, flushes vertices, and updates NewDriverState.
3319 * It also checks if the binding has actually changing before
3323 bind_atomic_buffer_err(struct gl_context
*ctx
, unsigned index
,
3324 struct gl_buffer_object
*bufObj
, GLintptr offset
,
3325 GLsizeiptr size
, const char *name
)
3327 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3328 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3332 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3333 _mesa_error(ctx
, GL_INVALID_VALUE
,
3334 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3335 ATOMIC_COUNTER_SIZE
);
3339 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
3343 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3345 const GLintptr
*offsets
,
3346 const GLsizeiptr
*sizes
)
3348 if (offsets
[index
] < 0) {
3349 /* The ARB_multi_bind spec says:
3351 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3352 * value in <offsets> is less than zero (per binding)."
3354 _mesa_error(ctx
, GL_INVALID_VALUE
,
3355 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3356 index
, (int64_t) offsets
[index
]);
3360 if (sizes
[index
] <= 0) {
3361 /* The ARB_multi_bind spec says:
3363 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3364 * value in <sizes> is less than or equal to zero (per binding)."
3366 _mesa_error(ctx
, GL_INVALID_VALUE
,
3367 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3368 index
, (int64_t) sizes
[index
]);
3376 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3377 GLuint first
, GLsizei count
,
3380 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3381 _mesa_error(ctx
, GL_INVALID_ENUM
,
3382 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3386 /* The ARB_multi_bind_spec says:
3388 * "An INVALID_OPERATION error is generated if <first> + <count> is
3389 * greater than the number of target-specific indexed binding points,
3390 * as described in section 6.7.1."
3392 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3393 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3394 "%s(first=%u + count=%d > the value of "
3395 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3396 caller
, first
, count
,
3397 ctx
->Const
.MaxUniformBufferBindings
);
3405 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3406 GLuint first
, GLsizei count
,
3409 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3410 _mesa_error(ctx
, GL_INVALID_ENUM
,
3411 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3415 /* The ARB_multi_bind_spec says:
3417 * "An INVALID_OPERATION error is generated if <first> + <count> is
3418 * greater than the number of target-specific indexed binding points,
3419 * as described in section 6.7.1."
3421 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3422 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3423 "%s(first=%u + count=%d > the value of "
3424 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3425 caller
, first
, count
,
3426 ctx
->Const
.MaxShaderStorageBufferBindings
);
3434 * Unbind all uniform buffers in the range
3435 * <first> through <first>+<count>-1
3438 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3440 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3442 for (int i
= 0; i
< count
; i
++)
3443 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3444 bufObj
, -1, -1, GL_TRUE
);
3448 * Unbind all shader storage buffers in the range
3449 * <first> through <first>+<count>-1
3452 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3455 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3457 for (int i
= 0; i
< count
; i
++)
3458 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3459 bufObj
, -1, -1, GL_TRUE
);
3463 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3464 const GLuint
*buffers
,
3466 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3469 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3472 /* Assume that at least one binding will be changed */
3473 FLUSH_VERTICES(ctx
, 0);
3474 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3477 /* The ARB_multi_bind spec says:
3479 * "If <buffers> is NULL, all bindings from <first> through
3480 * <first>+<count>-1 are reset to their unbound (zero) state.
3481 * In this case, the offsets and sizes associated with the
3482 * binding points are set to default values, ignoring
3483 * <offsets> and <sizes>."
3485 unbind_uniform_buffers(ctx
, first
, count
);
3489 /* Note that the error semantics for multi-bind commands differ from
3490 * those of other GL commands.
3492 * The Issues section in the ARB_multi_bind spec says:
3494 * "(11) Typically, OpenGL specifies that if an error is generated by a
3495 * command, that command has no effect. This is somewhat
3496 * unfortunate for multi-bind commands, because it would require a
3497 * first pass to scan the entire list of bound objects for errors
3498 * and then a second pass to actually perform the bindings.
3499 * Should we have different error semantics?
3501 * RESOLVED: Yes. In this specification, when the parameters for
3502 * one of the <count> binding points are invalid, that binding point
3503 * is not updated and an error will be generated. However, other
3504 * binding points in the same command will be updated if their
3505 * parameters are valid and no other error occurs."
3508 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3510 for (int i
= 0; i
< count
; i
++) {
3511 struct gl_uniform_buffer_binding
*binding
=
3512 &ctx
->UniformBufferBindings
[first
+ i
];
3513 struct gl_buffer_object
*bufObj
;
3514 GLintptr offset
= 0;
3515 GLsizeiptr size
= 0;
3518 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3521 /* The ARB_multi_bind spec says:
3523 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3524 * pair of values in <offsets> and <sizes> does not respectively
3525 * satisfy the constraints described for those parameters for the
3526 * specified target, as described in section 6.7.1 (per binding)."
3528 * Section 6.7.1 refers to table 6.5, which says:
3530 * "┌───────────────────────────────────────────────────────────────┐
3531 * │ Uniform buffer array bindings (see sec. 7.6) │
3532 * ├─────────────────────┬─────────────────────────────────────────┤
3534 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3535 * │ │ OFFSET_ALIGNMENT │
3537 * │ size restriction │ none │
3538 * └─────────────────────┴─────────────────────────────────────────┘"
3540 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3541 _mesa_error(ctx
, GL_INVALID_VALUE
,
3542 "glBindBuffersRange(offsets[%u]=%" PRId64
3543 " is misaligned; it must be a multiple of the value of "
3544 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3545 "target=GL_UNIFORM_BUFFER)",
3546 i
, (int64_t) offsets
[i
],
3547 ctx
->Const
.UniformBufferOffsetAlignment
);
3551 offset
= offsets
[i
];
3555 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3556 bufObj
= binding
->BufferObject
;
3558 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3561 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3562 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3564 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3568 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3572 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3573 GLsizei count
, const GLuint
*buffers
,
3575 const GLintptr
*offsets
,
3576 const GLsizeiptr
*sizes
,
3579 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3582 /* Assume that at least one binding will be changed */
3583 FLUSH_VERTICES(ctx
, 0);
3584 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3587 /* The ARB_multi_bind spec says:
3589 * "If <buffers> is NULL, all bindings from <first> through
3590 * <first>+<count>-1 are reset to their unbound (zero) state.
3591 * In this case, the offsets and sizes associated with the
3592 * binding points are set to default values, ignoring
3593 * <offsets> and <sizes>."
3595 unbind_shader_storage_buffers(ctx
, first
, count
);
3599 /* Note that the error semantics for multi-bind commands differ from
3600 * those of other GL commands.
3602 * The Issues section in the ARB_multi_bind spec says:
3604 * "(11) Typically, OpenGL specifies that if an error is generated by a
3605 * command, that command has no effect. This is somewhat
3606 * unfortunate for multi-bind commands, because it would require a
3607 * first pass to scan the entire list of bound objects for errors
3608 * and then a second pass to actually perform the bindings.
3609 * Should we have different error semantics?
3611 * RESOLVED: Yes. In this specification, when the parameters for
3612 * one of the <count> binding points are invalid, that binding point
3613 * is not updated and an error will be generated. However, other
3614 * binding points in the same command will be updated if their
3615 * parameters are valid and no other error occurs."
3618 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3620 for (int i
= 0; i
< count
; i
++) {
3621 struct gl_shader_storage_buffer_binding
*binding
=
3622 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3623 struct gl_buffer_object
*bufObj
;
3624 GLintptr offset
= 0;
3625 GLsizeiptr size
= 0;
3628 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3631 /* The ARB_multi_bind spec says:
3633 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3634 * pair of values in <offsets> and <sizes> does not respectively
3635 * satisfy the constraints described for those parameters for the
3636 * specified target, as described in section 6.7.1 (per binding)."
3638 * Section 6.7.1 refers to table 6.5, which says:
3640 * "┌───────────────────────────────────────────────────────────────┐
3641 * │ Shader storage buffer array bindings (see sec. 7.8) │
3642 * ├─────────────────────┬─────────────────────────────────────────┤
3644 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3645 * │ │ BUFFER_OFFSET_ALIGNMENT │
3647 * │ size restriction │ none │
3648 * └─────────────────────┴─────────────────────────────────────────┘"
3650 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3651 _mesa_error(ctx
, GL_INVALID_VALUE
,
3652 "glBindBuffersRange(offsets[%u]=%" PRId64
3653 " is misaligned; it must be a multiple of the value of "
3654 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3655 "target=GL_SHADER_STORAGE_BUFFER)",
3656 i
, (int64_t) offsets
[i
],
3657 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3661 offset
= offsets
[i
];
3665 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3666 bufObj
= binding
->BufferObject
;
3668 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3671 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3672 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3674 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3678 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3682 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3683 struct gl_transform_feedback_object
*tfObj
,
3684 GLuint first
, GLsizei count
, const char *caller
)
3686 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3687 _mesa_error(ctx
, GL_INVALID_ENUM
,
3688 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3692 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3694 * "An INVALID_OPERATION error is generated :
3697 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3698 * FEEDBACK_BUFFER and transform feedback is currently active."
3700 * We assume that this is also meant to apply to BindBuffersRange
3701 * and BindBuffersBase.
3703 if (tfObj
->Active
) {
3704 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3705 "%s(Changing transform feedback buffers while "
3706 "transform feedback is active)", caller
);
3710 /* The ARB_multi_bind_spec says:
3712 * "An INVALID_OPERATION error is generated if <first> + <count> is
3713 * greater than the number of target-specific indexed binding points,
3714 * as described in section 6.7.1."
3716 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3717 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3718 "%s(first=%u + count=%d > the value of "
3719 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3720 caller
, first
, count
,
3721 ctx
->Const
.MaxTransformFeedbackBuffers
);
3729 * Unbind all transform feedback buffers in the range
3730 * <first> through <first>+<count>-1
3733 unbind_xfb_buffers(struct gl_context
*ctx
,
3734 struct gl_transform_feedback_object
*tfObj
,
3735 GLuint first
, GLsizei count
)
3737 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3739 for (int i
= 0; i
< count
; i
++)
3740 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3745 bind_xfb_buffers(struct gl_context
*ctx
,
3746 GLuint first
, GLsizei count
,
3747 const GLuint
*buffers
,
3749 const GLintptr
*offsets
,
3750 const GLsizeiptr
*sizes
,
3753 struct gl_transform_feedback_object
*tfObj
=
3754 ctx
->TransformFeedback
.CurrentObject
;
3756 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3759 /* Assume that at least one binding will be changed */
3760 FLUSH_VERTICES(ctx
, 0);
3761 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3764 /* The ARB_multi_bind spec says:
3766 * "If <buffers> is NULL, all bindings from <first> through
3767 * <first>+<count>-1 are reset to their unbound (zero) state.
3768 * In this case, the offsets and sizes associated with the
3769 * binding points are set to default values, ignoring
3770 * <offsets> and <sizes>."
3772 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3776 /* Note that the error semantics for multi-bind commands differ from
3777 * those of other GL commands.
3779 * The Issues section in the ARB_multi_bind spec says:
3781 * "(11) Typically, OpenGL specifies that if an error is generated by a
3782 * command, that command has no effect. This is somewhat
3783 * unfortunate for multi-bind commands, because it would require a
3784 * first pass to scan the entire list of bound objects for errors
3785 * and then a second pass to actually perform the bindings.
3786 * Should we have different error semantics?
3788 * RESOLVED: Yes. In this specification, when the parameters for
3789 * one of the <count> binding points are invalid, that binding point
3790 * is not updated and an error will be generated. However, other
3791 * binding points in the same command will be updated if their
3792 * parameters are valid and no other error occurs."
3795 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3797 for (int i
= 0; i
< count
; i
++) {
3798 const GLuint index
= first
+ i
;
3799 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3800 struct gl_buffer_object
*bufObj
;
3801 GLintptr offset
= 0;
3802 GLsizeiptr size
= 0;
3805 offset
= offsets
[i
];
3808 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3811 /* The ARB_multi_bind spec says:
3813 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3814 * pair of values in <offsets> and <sizes> does not respectively
3815 * satisfy the constraints described for those parameters for the
3816 * specified target, as described in section 6.7.1 (per binding)."
3818 * Section 6.7.1 refers to table 6.5, which says:
3820 * "┌───────────────────────────────────────────────────────────────┐
3821 * │ Transform feedback array bindings (see sec. 13.2.2) │
3822 * ├───────────────────────┬───────────────────────────────────────┤
3824 * │ offset restriction │ multiple of 4 │
3826 * │ size restriction │ multiple of 4 │
3827 * └───────────────────────┴───────────────────────────────────────┘"
3829 if (offsets
[i
] & 0x3) {
3830 _mesa_error(ctx
, GL_INVALID_VALUE
,
3831 "glBindBuffersRange(offsets[%u]=%" PRId64
3832 " is misaligned; it must be a multiple of 4 when "
3833 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3834 i
, (int64_t) offsets
[i
]);
3838 if (sizes
[i
] & 0x3) {
3839 _mesa_error(ctx
, GL_INVALID_VALUE
,
3840 "glBindBuffersRange(sizes[%u]=%" PRId64
3841 " is misaligned; it must be a multiple of 4 when "
3842 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3843 i
, (int64_t) sizes
[i
]);
3847 offset
= offsets
[i
];
3851 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3852 bufObj
= boundBufObj
;
3854 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3857 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3861 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3865 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3866 GLuint first
, GLsizei count
,
3869 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3870 _mesa_error(ctx
, GL_INVALID_ENUM
,
3871 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3875 /* The ARB_multi_bind_spec says:
3877 * "An INVALID_OPERATION error is generated if <first> + <count> is
3878 * greater than the number of target-specific indexed binding points,
3879 * as described in section 6.7.1."
3881 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3882 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3883 "%s(first=%u + count=%d > the value of "
3884 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3885 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3893 * Unbind all atomic counter buffers in the range
3894 * <first> through <first>+<count>-1
3897 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3899 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3901 for (int i
= 0; i
< count
; i
++)
3902 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3907 bind_atomic_buffers(struct gl_context
*ctx
,
3910 const GLuint
*buffers
,
3912 const GLintptr
*offsets
,
3913 const GLsizeiptr
*sizes
,
3916 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3919 /* Assume that at least one binding will be changed */
3920 FLUSH_VERTICES(ctx
, 0);
3921 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3924 /* The ARB_multi_bind spec says:
3926 * "If <buffers> is NULL, all bindings from <first> through
3927 * <first>+<count>-1 are reset to their unbound (zero) state.
3928 * In this case, the offsets and sizes associated with the
3929 * binding points are set to default values, ignoring
3930 * <offsets> and <sizes>."
3932 unbind_atomic_buffers(ctx
, first
, count
);
3936 /* Note that the error semantics for multi-bind commands differ from
3937 * those of other GL commands.
3939 * The Issues section in the ARB_multi_bind spec says:
3941 * "(11) Typically, OpenGL specifies that if an error is generated by a
3942 * command, that command has no effect. This is somewhat
3943 * unfortunate for multi-bind commands, because it would require a
3944 * first pass to scan the entire list of bound objects for errors
3945 * and then a second pass to actually perform the bindings.
3946 * Should we have different error semantics?
3948 * RESOLVED: Yes. In this specification, when the parameters for
3949 * one of the <count> binding points are invalid, that binding point
3950 * is not updated and an error will be generated. However, other
3951 * binding points in the same command will be updated if their
3952 * parameters are valid and no other error occurs."
3955 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3957 for (int i
= 0; i
< count
; i
++) {
3958 struct gl_atomic_buffer_binding
*binding
=
3959 &ctx
->AtomicBufferBindings
[first
+ i
];
3960 struct gl_buffer_object
*bufObj
;
3961 GLintptr offset
= 0;
3962 GLsizeiptr size
= 0;
3965 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3968 /* The ARB_multi_bind spec says:
3970 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3971 * pair of values in <offsets> and <sizes> does not respectively
3972 * satisfy the constraints described for those parameters for the
3973 * specified target, as described in section 6.7.1 (per binding)."
3975 * Section 6.7.1 refers to table 6.5, which says:
3977 * "┌───────────────────────────────────────────────────────────────┐
3978 * │ Atomic counter array bindings (see sec. 7.7.2) │
3979 * ├───────────────────────┬───────────────────────────────────────┤
3981 * │ offset restriction │ multiple of 4 │
3983 * │ size restriction │ none │
3984 * └───────────────────────┴───────────────────────────────────────┘"
3986 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3987 _mesa_error(ctx
, GL_INVALID_VALUE
,
3988 "glBindBuffersRange(offsets[%u]=%" PRId64
3989 " is misaligned; it must be a multiple of %d when "
3990 "target=GL_ATOMIC_COUNTER_BUFFER)",
3991 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3995 offset
= offsets
[i
];
3999 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
4000 bufObj
= binding
->BufferObject
;
4002 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
4005 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
4008 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4011 static ALWAYS_INLINE
void
4012 bind_buffer_range(GLenum target
, GLuint index
, GLuint buffer
, GLintptr offset
,
4013 GLsizeiptr size
, bool no_error
)
4015 GET_CURRENT_CONTEXT(ctx
);
4016 struct gl_buffer_object
*bufObj
;
4018 if (MESA_VERBOSE
& VERBOSE_API
) {
4019 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
4020 _mesa_enum_to_string(target
), index
, buffer
,
4021 (unsigned long) offset
, (unsigned long) size
);
4025 bufObj
= ctx
->Shared
->NullBufferObj
;
4027 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4029 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4030 &bufObj
, "glBindBufferRange"))
4035 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4036 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4037 index
, bufObj
, offset
, size
);
4039 case GL_UNIFORM_BUFFER
:
4040 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
4042 case GL_SHADER_STORAGE_BUFFER
:
4043 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
,
4046 case GL_ATOMIC_COUNTER_BUFFER
:
4047 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
4050 unreachable("invalid BindBufferRange target with KHR_no_error");
4054 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4055 "glBindBufferRange(invalid buffer=%u)", buffer
);
4061 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
4068 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4069 if (!_mesa_validate_buffer_range_xfb(ctx
,
4070 ctx
->TransformFeedback
.CurrentObject
,
4071 index
, bufObj
, offset
, size
,
4075 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4076 index
, bufObj
, offset
, size
);
4078 case GL_UNIFORM_BUFFER
:
4079 bind_buffer_range_uniform_buffer_err(ctx
, index
, bufObj
, offset
,
4082 case GL_SHADER_STORAGE_BUFFER
:
4083 bind_buffer_range_shader_storage_buffer_err(ctx
, index
, bufObj
,
4086 case GL_ATOMIC_COUNTER_BUFFER
:
4087 bind_atomic_buffer_err(ctx
, index
, bufObj
, offset
, size
,
4088 "glBindBufferRange");
4091 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4098 _mesa_BindBufferRange_no_error(GLenum target
, GLuint index
, GLuint buffer
,
4099 GLintptr offset
, GLsizeiptr size
)
4101 bind_buffer_range(target
, index
, buffer
, offset
, size
, true);
4105 _mesa_BindBufferRange(GLenum target
, GLuint index
,
4106 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
4108 bind_buffer_range(target
, index
, buffer
, offset
, size
, false);
4112 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4114 GET_CURRENT_CONTEXT(ctx
);
4115 struct gl_buffer_object
*bufObj
;
4117 if (MESA_VERBOSE
& VERBOSE_API
) {
4118 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4119 _mesa_enum_to_string(target
), index
, buffer
);
4123 bufObj
= ctx
->Shared
->NullBufferObj
;
4125 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4127 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4128 &bufObj
, "glBindBufferBase"))
4132 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4133 "glBindBufferBase(invalid buffer=%u)", buffer
);
4137 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4138 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4140 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4141 * zero and size equal to the size of buffer."
4143 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4145 * "If the parameter (starting offset or size) was not specified when the
4146 * buffer object was bound, zero is returned."
4148 * What happens if the size of the buffer changes? Does the size of the
4149 * buffer at the moment glBindBufferBase was called still play a role, like
4150 * the first quote would imply, or is the size meaningless in the
4151 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4152 * core spec page 45 says:
4154 * "It is equivalent to calling BindBufferRange with offset zero, while
4155 * size is determined by the size of the bound buffer at the time the
4158 * My interpretation is that the GL 4.1 spec was a clarification of the
4159 * behavior, not a change. In particular, this choice will only make
4160 * rendering work in cases where it would have had undefined results.
4164 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4165 _mesa_bind_buffer_base_transform_feedback(ctx
,
4166 ctx
->TransformFeedback
.CurrentObject
,
4167 index
, bufObj
, false);
4169 case GL_UNIFORM_BUFFER
:
4170 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4172 case GL_SHADER_STORAGE_BUFFER
:
4173 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4175 case GL_ATOMIC_COUNTER_BUFFER
:
4176 bind_atomic_buffer_err(ctx
, index
, bufObj
, 0, 0,
4177 "glBindBufferBase");
4180 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4186 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4187 const GLuint
*buffers
,
4188 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4190 GET_CURRENT_CONTEXT(ctx
);
4192 if (MESA_VERBOSE
& VERBOSE_API
) {
4193 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4194 _mesa_enum_to_string(target
), first
, count
,
4195 buffers
, offsets
, sizes
);
4199 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4200 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4201 "glBindBuffersRange");
4203 case GL_UNIFORM_BUFFER
:
4204 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4205 "glBindBuffersRange");
4207 case GL_SHADER_STORAGE_BUFFER
:
4208 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4209 "glBindBuffersRange");
4211 case GL_ATOMIC_COUNTER_BUFFER
:
4212 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4213 "glBindBuffersRange");
4216 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4217 _mesa_enum_to_string(target
));
4223 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4224 const GLuint
*buffers
)
4226 GET_CURRENT_CONTEXT(ctx
);
4228 if (MESA_VERBOSE
& VERBOSE_API
) {
4229 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4230 _mesa_enum_to_string(target
), first
, count
, buffers
);
4234 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4235 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4236 "glBindBuffersBase");
4238 case GL_UNIFORM_BUFFER
:
4239 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4240 "glBindBuffersBase");
4242 case GL_SHADER_STORAGE_BUFFER
:
4243 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4244 "glBindBuffersBase");
4246 case GL_ATOMIC_COUNTER_BUFFER
:
4247 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4248 "glBindBuffersBase");
4251 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4252 _mesa_enum_to_string(target
));
4257 static ALWAYS_INLINE
void
4258 invalidate_buffer_subdata(struct gl_context
*ctx
,
4259 struct gl_buffer_object
*bufObj
, GLintptr offset
,
4262 if (ctx
->Driver
.InvalidateBufferSubData
)
4263 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4267 _mesa_InvalidateBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
4270 GET_CURRENT_CONTEXT(ctx
);
4272 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4273 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4277 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4280 GET_CURRENT_CONTEXT(ctx
);
4281 struct gl_buffer_object
*bufObj
;
4282 const GLintptr end
= offset
+ length
;
4284 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4285 * Profile) spec says:
4287 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4288 * name of an existing buffer object."
4290 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4291 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4292 _mesa_error(ctx
, GL_INVALID_VALUE
,
4293 "glInvalidateBufferSubData(name = %u) invalid object",
4298 /* The GL_ARB_invalidate_subdata spec says:
4300 * "An INVALID_VALUE error is generated if <offset> or <length> is
4301 * negative, or if <offset> + <length> is greater than the value of
4304 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4305 _mesa_error(ctx
, GL_INVALID_VALUE
,
4306 "glInvalidateBufferSubData(invalid offset or length)");
4310 /* The OpenGL 4.4 (Core Profile) spec says:
4312 * "An INVALID_OPERATION error is generated if buffer is currently
4313 * mapped by MapBuffer or if the invalidate range intersects the range
4314 * currently mapped by MapBufferRange, unless it was mapped
4315 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4317 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4318 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4319 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4320 "glInvalidateBufferSubData(intersection with mapped "
4325 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4329 _mesa_InvalidateBufferData_no_error(GLuint buffer
)
4331 GET_CURRENT_CONTEXT(ctx
);
4333 struct gl_buffer_object
*bufObj
=_mesa_lookup_bufferobj(ctx
, buffer
);
4334 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4338 _mesa_InvalidateBufferData(GLuint buffer
)
4340 GET_CURRENT_CONTEXT(ctx
);
4341 struct gl_buffer_object
*bufObj
;
4343 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4344 * Profile) spec says:
4346 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4347 * name of an existing buffer object."
4349 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4350 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4351 _mesa_error(ctx
, GL_INVALID_VALUE
,
4352 "glInvalidateBufferData(name = %u) invalid object",
4357 /* The OpenGL 4.4 (Core Profile) spec says:
4359 * "An INVALID_OPERATION error is generated if buffer is currently
4360 * mapped by MapBuffer or if the invalidate range intersects the range
4361 * currently mapped by MapBufferRange, unless it was mapped
4362 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4364 if (_mesa_check_disallowed_mapping(bufObj
)) {
4365 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4366 "glInvalidateBufferData(intersection with mapped "
4371 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4375 buffer_page_commitment(struct gl_context
*ctx
,
4376 struct gl_buffer_object
*bufferObj
,
4377 GLintptr offset
, GLsizeiptr size
,
4378 GLboolean commit
, const char *func
)
4380 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4381 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4386 if (size
< 0 || size
> bufferObj
->Size
||
4387 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4388 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4393 /* The GL_ARB_sparse_buffer extension specification says:
4395 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4396 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4397 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4398 * not extend to the end of the buffer's data store."
4400 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4401 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4406 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4407 offset
+ size
!= bufferObj
->Size
) {
4408 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4413 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4417 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4420 GET_CURRENT_CONTEXT(ctx
);
4421 struct gl_buffer_object
*bufferObj
;
4423 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4428 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4429 "glBufferPageCommitmentARB");
4433 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4434 GLsizeiptr size
, GLboolean commit
)
4436 GET_CURRENT_CONTEXT(ctx
);
4437 struct gl_buffer_object
*bufferObj
;
4439 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4440 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4441 /* Note: the extension spec is not clear about the excpected error value. */
4442 _mesa_error(ctx
, GL_INVALID_VALUE
,
4443 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4448 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4449 "glNamedBufferPageCommitmentARB");