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"
42 #include "externalobjects.h"
45 #include "glformats.h"
47 #include "transformfeedback.h"
49 #include "util/u_atomic.h"
54 /*#define BOUNDS_CHECK*/
58 * We count the number of buffer modification calls to check for
59 * inefficient buffer use. This is the number of such calls before we
62 #define BUFFER_WARNING_CALL_COUNT 4
66 * Helper to warn of possible performance issues, such as frequently
67 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
71 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
76 _mesa_gl_vdebugf(ctx
, id
,
77 MESA_DEBUG_SOURCE_API
,
78 MESA_DEBUG_TYPE_PERFORMANCE
,
79 MESA_DEBUG_SEVERITY_MEDIUM
,
84 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
86 static GLuint id = 0; \
87 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
92 * Used as a placeholder for buffer objects between glGenBuffers() and
93 * glBindBuffer() so that glIsBuffer() can work correctly.
95 static struct gl_buffer_object DummyBufferObject
;
99 * Return pointer to address of a buffer object target.
100 * \param ctx the GL context
101 * \param target the buffer object target to be retrieved.
102 * \return pointer to pointer to the buffer object bound to \c target in the
103 * specified context or \c NULL if \c target is invalid.
105 static inline struct gl_buffer_object
**
106 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
108 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
110 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
111 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
115 case GL_ARRAY_BUFFER_ARB
:
116 if (ctx
->Array
.ArrayBufferObj
)
117 ctx
->Array
.ArrayBufferObj
->UsageHistory
|= USAGE_ARRAY_BUFFER
;
118 return &ctx
->Array
.ArrayBufferObj
;
119 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
120 if (ctx
->Array
.VAO
->IndexBufferObj
)
121 ctx
->Array
.VAO
->IndexBufferObj
->UsageHistory
122 |= USAGE_ELEMENT_ARRAY_BUFFER
;
123 return &ctx
->Array
.VAO
->IndexBufferObj
;
124 case GL_PIXEL_PACK_BUFFER_EXT
:
125 return &ctx
->Pack
.BufferObj
;
126 case GL_PIXEL_UNPACK_BUFFER_EXT
:
127 return &ctx
->Unpack
.BufferObj
;
128 case GL_COPY_READ_BUFFER
:
129 return &ctx
->CopyReadBuffer
;
130 case GL_COPY_WRITE_BUFFER
:
131 return &ctx
->CopyWriteBuffer
;
132 case GL_QUERY_BUFFER
:
133 if (_mesa_has_ARB_query_buffer_object(ctx
))
134 return &ctx
->QueryBuffer
;
136 case GL_DRAW_INDIRECT_BUFFER
:
137 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_draw_indirect
) ||
138 _mesa_is_gles31(ctx
)) {
139 return &ctx
->DrawIndirectBuffer
;
142 case GL_PARAMETER_BUFFER_ARB
:
143 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
144 return &ctx
->ParameterBuffer
;
147 case GL_DISPATCH_INDIRECT_BUFFER
:
148 if (_mesa_has_compute_shaders(ctx
)) {
149 return &ctx
->DispatchIndirectBuffer
;
152 case GL_TRANSFORM_FEEDBACK_BUFFER
:
153 if (ctx
->Extensions
.EXT_transform_feedback
) {
154 return &ctx
->TransformFeedback
.CurrentBuffer
;
157 case GL_TEXTURE_BUFFER
:
158 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
159 _mesa_has_OES_texture_buffer(ctx
)) {
160 return &ctx
->Texture
.BufferObject
;
163 case GL_UNIFORM_BUFFER
:
164 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
165 return &ctx
->UniformBuffer
;
168 case GL_SHADER_STORAGE_BUFFER
:
169 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
170 return &ctx
->ShaderStorageBuffer
;
173 case GL_ATOMIC_COUNTER_BUFFER
:
174 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
175 return &ctx
->AtomicBuffer
;
178 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
179 if (ctx
->Extensions
.AMD_pinned_memory
) {
180 return &ctx
->ExternalVirtualMemoryBuffer
;
191 * Get the buffer object bound to the specified target in a GL context.
192 * \param ctx the GL context
193 * \param target the buffer object target to be retrieved.
194 * \param error the GL error to record if target is illegal.
195 * \return pointer to the buffer object bound to \c target in the
196 * specified context or \c NULL if \c target is invalid.
198 static inline struct gl_buffer_object
*
199 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
202 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
205 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
209 if (!_mesa_is_bufferobj(*bufObj
)) {
210 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
219 * Convert a GLbitfield describing the mapped buffer access flags
220 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
223 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
225 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
226 if ((access
& rwFlags
) == rwFlags
)
227 return GL_READ_WRITE
;
228 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
230 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
231 return GL_WRITE_ONLY
;
233 /* Otherwise, AccessFlags is zero (the default state).
235 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
237 * Name Type Initial Value Legal Values
239 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
242 * However, table 6.8 in the GL_OES_mapbuffer extension says:
244 * Get Value Type Get Command Value Description
245 * --------- ---- ----------- ----- -----------
246 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
248 * The difference is because GL_OES_mapbuffer only supports mapping buffers
253 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
258 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
260 * The regions do not overlap if and only if the end of the given
261 * region is before the mapped region or the start of the given region
262 * is after the mapped region.
264 * \param obj Buffer object target on which to operate.
265 * \param offset Offset of the first byte of the subdata range.
266 * \param size Size, in bytes, of the subdata range.
267 * \return true if ranges overlap, false otherwise
271 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
272 GLintptr offset
, GLsizeiptr size
)
274 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
275 const GLintptr end
= offset
+ size
;
276 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
277 obj
->Mappings
[MAP_USER
].Length
;
279 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
288 * Tests the subdata range parameters and sets the GL error code for
289 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
290 * \c glClearBufferSubData.
292 * \param ctx GL context.
293 * \param bufObj The buffer object.
294 * \param offset Offset of the first byte of the subdata range.
295 * \param size Size, in bytes, of the subdata range.
296 * \param mappedRange If true, checks if an overlapping range is mapped.
297 * If false, checks if buffer is mapped.
298 * \param caller Name of calling function for recording errors.
299 * \return false if error, true otherwise
301 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
304 buffer_object_subdata_range_good(struct gl_context
*ctx
,
305 const struct gl_buffer_object
*bufObj
,
306 GLintptr offset
, GLsizeiptr size
,
307 bool mappedRange
, const char *caller
)
310 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
315 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
319 if (offset
+ size
> bufObj
->Size
) {
320 _mesa_error(ctx
, GL_INVALID_VALUE
,
321 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
322 (unsigned long) offset
,
323 (unsigned long) size
,
324 (unsigned long) bufObj
->Size
);
328 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
332 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
333 _mesa_error(ctx
, GL_INVALID_OPERATION
,
334 "%s(range is mapped without persistent bit)",
340 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
341 _mesa_error(ctx
, GL_INVALID_OPERATION
,
342 "%s(buffer is mapped without persistent bit)",
353 * Test the format and type parameters and set the GL error code for
354 * \c glClearBufferData, \c glClearNamedBufferData, \c glClearBufferSubData
355 * and \c glClearNamedBufferSubData.
357 * \param ctx GL context.
358 * \param internalformat Format to which the data is to be converted.
359 * \param format Format of the supplied data.
360 * \param type Type of the supplied data.
361 * \param caller Name of calling function for recording errors.
362 * \return If internalformat, format and type are legal the mesa_format
363 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
365 * \sa glClearBufferData, glClearNamedBufferData, glClearBufferSubData and
366 * glClearNamedBufferSubData.
369 validate_clear_buffer_format(struct gl_context
*ctx
,
370 GLenum internalformat
,
371 GLenum format
, GLenum type
,
374 mesa_format mesaFormat
;
375 GLenum errorFormatType
;
377 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
378 if (mesaFormat
== MESA_FORMAT_NONE
) {
379 _mesa_error(ctx
, GL_INVALID_ENUM
,
380 "%s(invalid internalformat)", caller
);
381 return MESA_FORMAT_NONE
;
384 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
385 * EXT_texture_integer there is no conversion between integer and
386 * non-integer formats
388 if (_mesa_is_enum_format_signed_int(format
) !=
389 _mesa_is_format_integer_color(mesaFormat
)) {
390 _mesa_error(ctx
, GL_INVALID_OPERATION
,
391 "%s(integer vs non-integer)", caller
);
392 return MESA_FORMAT_NONE
;
395 if (!_mesa_is_color_format(format
)) {
396 _mesa_error(ctx
, GL_INVALID_VALUE
,
397 "%s(format is not a color format)", caller
);
398 return MESA_FORMAT_NONE
;
401 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
402 if (errorFormatType
!= GL_NO_ERROR
) {
403 _mesa_error(ctx
, GL_INVALID_VALUE
,
404 "%s(invalid format or type)", caller
);
405 return MESA_FORMAT_NONE
;
413 * Convert user-specified clear value to the specified internal format.
415 * \param ctx GL context.
416 * \param internalformat Format to which the data is converted.
417 * \param clearValue Points to the converted clear value.
418 * \param format Format of the supplied data.
419 * \param type Type of the supplied data.
420 * \param data Data which is to be converted to internalformat.
421 * \param caller Name of calling function for recording errors.
422 * \return true if data could be converted, false otherwise.
424 * \sa glClearBufferData, glClearBufferSubData
427 convert_clear_buffer_data(struct gl_context
*ctx
,
428 mesa_format internalformat
,
429 GLubyte
*clearValue
, GLenum format
, GLenum type
,
430 const GLvoid
*data
, const char *caller
)
432 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
434 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
435 0, &clearValue
, 1, 1, 1,
436 format
, type
, data
, &ctx
->Unpack
)) {
440 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
447 * Allocate and initialize a new buffer object.
449 * Default callback for the \c dd_function_table::NewBufferObject() hook.
451 static struct gl_buffer_object
*
452 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
454 struct gl_buffer_object
*obj
= MALLOC_STRUCT(gl_buffer_object
);
458 _mesa_initialize_buffer_object(ctx
, obj
, name
);
464 * Delete a buffer object.
466 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
469 _mesa_delete_buffer_object(struct gl_context
*ctx
,
470 struct gl_buffer_object
*bufObj
)
474 vbo_delete_minmax_cache(bufObj
);
475 _mesa_align_free(bufObj
->Data
);
477 /* assign strange values here to help w/ debugging */
478 bufObj
->RefCount
= -1000;
481 simple_mtx_destroy(&bufObj
->MinMaxCacheMutex
);
489 * Set ptr to bufObj w/ reference counting.
490 * This is normally only called from the _mesa_reference_buffer_object() macro
491 * when there's a real pointer change.
494 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
495 struct gl_buffer_object
**ptr
,
496 struct gl_buffer_object
*bufObj
)
499 /* Unreference the old buffer */
500 struct gl_buffer_object
*oldObj
= *ptr
;
502 if (p_atomic_dec_zero(&oldObj
->RefCount
)) {
503 assert(ctx
->Driver
.DeleteBuffer
);
504 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
512 /* reference new buffer */
513 p_atomic_inc(&bufObj
->RefCount
);
520 * Get the value of MESA_NO_MINMAX_CACHE.
523 get_no_minmax_cache()
525 static bool read
= false;
526 static bool disable
= false;
529 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
538 * Initialize a buffer object to default values.
541 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
542 struct gl_buffer_object
*obj
,
545 memset(obj
, 0, sizeof(struct gl_buffer_object
));
548 obj
->Usage
= GL_STATIC_DRAW_ARB
;
550 simple_mtx_init(&obj
->MinMaxCacheMutex
, mtx_plain
);
551 if (get_no_minmax_cache())
552 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
558 * Callback called from _mesa_HashWalk()
561 count_buffer_size(GLuint key
, void *data
, void *userData
)
563 const struct gl_buffer_object
*bufObj
=
564 (const struct gl_buffer_object
*) data
;
565 GLuint
*total
= (GLuint
*) userData
;
568 *total
= *total
+ bufObj
->Size
;
573 * Compute total size (in bytes) of all buffer objects for the given context.
574 * For debugging purposes.
577 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
581 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
588 * Allocate space for and store data in a buffer object. Any data that was
589 * previously stored in the buffer object is lost. If \c data is \c NULL,
590 * memory will be allocated, but no copy will occur.
592 * This is the default callback for \c dd_function_table::BufferData()
593 * Note that all GL error checking will have been done already.
595 * \param ctx GL context.
596 * \param target Buffer object target on which to operate.
597 * \param size Size, in bytes, of the new data store.
598 * \param data Pointer to the data to store in the buffer object. This
599 * pointer may be \c NULL.
600 * \param usage Hints about how the data will be used.
601 * \param bufObj Object to be used.
603 * \return GL_TRUE for success, GL_FALSE for failure
604 * \sa glBufferDataARB, dd_function_table::BufferData.
607 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptrARB size
,
608 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
609 struct gl_buffer_object
*bufObj
)
615 _mesa_align_free( bufObj
->Data
);
617 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
619 bufObj
->Data
= (GLubyte
*) new_data
;
621 bufObj
->Usage
= usage
;
622 bufObj
->StorageFlags
= storageFlags
;
625 memcpy( bufObj
->Data
, data
, size
);
637 * Replace data in a subrange of buffer object. If the data range
638 * specified by \c size + \c offset extends beyond the end of the buffer or
639 * if \c data is \c NULL, no copy is performed.
641 * This is the default callback for \c dd_function_table::BufferSubData()
642 * Note that all GL error checking will have been done already.
644 * \param ctx GL context.
645 * \param offset Offset of the first byte to be modified.
646 * \param size Size, in bytes, of the data range.
647 * \param data Pointer to the data to store in the buffer object.
648 * \param bufObj Object to be used.
650 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
653 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptrARB offset
,
654 GLsizeiptrARB size
, const GLvoid
*data
,
655 struct gl_buffer_object
*bufObj
)
659 /* this should have been caught in _mesa_BufferSubData() */
660 assert(size
+ offset
<= bufObj
->Size
);
663 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
669 * Retrieve data from a subrange of buffer object. If the data range
670 * specified by \c size + \c offset extends beyond the end of the buffer or
671 * if \c data is \c NULL, no copy is performed.
673 * This is the default callback for \c dd_function_table::GetBufferSubData()
674 * Note that all GL error checking will have been done already.
676 * \param ctx GL context.
677 * \param target Buffer object target on which to operate.
678 * \param offset Offset of the first byte to be fetched.
679 * \param size Size, in bytes, of the data range.
680 * \param data Destination for data
681 * \param bufObj Object to be used.
683 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
686 buffer_get_subdata(struct gl_context
*ctx
, GLintptrARB offset
,
687 GLsizeiptrARB size
, GLvoid
*data
,
688 struct gl_buffer_object
*bufObj
)
692 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
693 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
699 * Clear a subrange of the buffer object with copies of the supplied data.
700 * If data is NULL the buffer is filled with zeros.
702 * This is the default callback for \c dd_function_table::ClearBufferSubData()
703 * Note that all GL error checking will have been done already.
705 * \param ctx GL context.
706 * \param offset Offset of the first byte to be cleared.
707 * \param size Size, in bytes, of the to be cleared range.
708 * \param clearValue Source of the data.
709 * \param clearValueSize Size, in bytes, of the supplied data.
710 * \param bufObj Object to be cleared.
712 * \sa glClearBufferSubData, glClearBufferData and
713 * dd_function_table::ClearBufferSubData.
716 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
717 GLintptr offset
, GLsizeiptr size
,
718 const GLvoid
*clearValue
,
719 GLsizeiptr clearValueSize
,
720 struct gl_buffer_object
*bufObj
)
725 assert(ctx
->Driver
.MapBufferRange
);
726 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
728 GL_MAP_INVALIDATE_RANGE_BIT
,
729 bufObj
, MAP_INTERNAL
);
732 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
736 if (clearValue
== NULL
) {
737 /* Clear with zeros, per the spec */
738 memset(dest
, 0, size
);
739 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
743 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
744 memcpy(dest
, clearValue
, clearValueSize
);
745 dest
+= clearValueSize
;
748 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
753 * Default fallback for \c dd_function_table::MapBufferRange().
754 * Called via glMapBufferRange().
757 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
758 GLsizeiptr length
, GLbitfield access
,
759 struct gl_buffer_object
*bufObj
,
760 gl_map_buffer_index index
)
763 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
764 /* Just return a direct pointer to the data */
765 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
766 bufObj
->Mappings
[index
].Length
= length
;
767 bufObj
->Mappings
[index
].Offset
= offset
;
768 bufObj
->Mappings
[index
].AccessFlags
= access
;
769 return bufObj
->Mappings
[index
].Pointer
;
774 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
775 * Called via glFlushMappedBufferRange().
778 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
779 GLintptr offset
, GLsizeiptr length
,
780 struct gl_buffer_object
*obj
,
781 gl_map_buffer_index index
)
793 * Default callback for \c dd_function_table::UnmapBuffer().
795 * The input parameters will have been already tested for errors.
797 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
800 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
801 gl_map_buffer_index index
)
804 /* XXX we might assert here that bufObj->Pointer is non-null */
805 bufObj
->Mappings
[index
].Pointer
= NULL
;
806 bufObj
->Mappings
[index
].Length
= 0;
807 bufObj
->Mappings
[index
].Offset
= 0;
808 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
814 * Default fallback for \c dd_function_table::CopyBufferSubData().
815 * Called via glCopyBufferSubData().
818 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
819 struct gl_buffer_object
*src
,
820 struct gl_buffer_object
*dst
,
821 GLintptr readOffset
, GLintptr writeOffset
,
824 GLubyte
*srcPtr
, *dstPtr
;
827 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
829 GL_MAP_WRITE_BIT
, src
,
835 srcPtr
+= readOffset
;
836 dstPtr
+= writeOffset
;
838 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
839 GL_MAP_READ_BIT
, src
,
841 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
843 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
847 /* Note: the src and dst regions will never overlap. Trying to do so
848 * would generate GL_INVALID_VALUE earlier.
850 if (srcPtr
&& dstPtr
)
851 memcpy(dstPtr
, srcPtr
, size
);
853 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
855 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
861 * Initialize the state associated with buffer objects
864 _mesa_init_buffer_objects( struct gl_context
*ctx
)
868 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
869 simple_mtx_init(&DummyBufferObject
.MinMaxCacheMutex
, mtx_plain
);
870 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
872 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
873 ctx
->Shared
->NullBufferObj
);
875 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
876 ctx
->Shared
->NullBufferObj
);
877 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
878 ctx
->Shared
->NullBufferObj
);
880 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
881 ctx
->Shared
->NullBufferObj
);
883 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
884 ctx
->Shared
->NullBufferObj
);
886 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
887 ctx
->Shared
->NullBufferObj
);
889 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
890 ctx
->Shared
->NullBufferObj
);
892 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
893 ctx
->Shared
->NullBufferObj
);
895 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
896 ctx
->Shared
->NullBufferObj
);
898 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
899 ctx
->Shared
->NullBufferObj
);
901 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
902 _mesa_reference_buffer_object(ctx
,
903 &ctx
->UniformBufferBindings
[i
].BufferObject
,
904 ctx
->Shared
->NullBufferObj
);
905 ctx
->UniformBufferBindings
[i
].Offset
= -1;
906 ctx
->UniformBufferBindings
[i
].Size
= -1;
909 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
910 _mesa_reference_buffer_object(ctx
,
911 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
912 ctx
->Shared
->NullBufferObj
);
913 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
914 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
917 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
918 _mesa_reference_buffer_object(ctx
,
919 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
920 ctx
->Shared
->NullBufferObj
);
921 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
922 ctx
->AtomicBufferBindings
[i
].Size
= 0;
928 _mesa_free_buffer_objects( struct gl_context
*ctx
)
932 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
934 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
935 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
937 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
939 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
941 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
943 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
945 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
947 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
949 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
951 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
952 _mesa_reference_buffer_object(ctx
,
953 &ctx
->UniformBufferBindings
[i
].BufferObject
,
957 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
958 _mesa_reference_buffer_object(ctx
,
959 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
963 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
964 _mesa_reference_buffer_object(ctx
,
965 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
972 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
974 struct gl_buffer_object
**buf_handle
,
977 struct gl_buffer_object
*buf
= *buf_handle
;
979 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
980 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
984 if (!buf
|| buf
== &DummyBufferObject
) {
985 /* If this is a new buffer object id, or one which was generated but
986 * never used before, allocate a buffer object now.
988 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
990 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
993 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1001 * Bind the specified target to buffer for the specified context.
1002 * Called by glBindBuffer() and other functions.
1005 bind_buffer_object(struct gl_context
*ctx
,
1006 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1008 struct gl_buffer_object
*oldBufObj
;
1009 struct gl_buffer_object
*newBufObj
= NULL
;
1013 /* Get pointer to old buffer object (to be unbound) */
1014 oldBufObj
= *bindTarget
;
1015 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1016 return; /* rebinding the same buffer object- no change */
1019 * Get pointer to new buffer object (newBufObj)
1022 /* The spec says there's not a buffer object named 0, but we use
1023 * one internally because it simplifies things.
1025 newBufObj
= ctx
->Shared
->NullBufferObj
;
1028 /* non-default buffer object */
1029 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1030 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1031 &newBufObj
, "glBindBuffer"))
1035 /* record usage history */
1036 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1037 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1040 /* bind new buffer */
1041 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1046 * Update the default buffer objects in the given context to reference those
1047 * specified in the shared state and release those referencing the old
1051 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1053 /* Bind the NullBufferObj to remove references to those
1054 * in the shared context hash table.
1056 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1057 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1058 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1059 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1065 * Return the gl_buffer_object for the given ID.
1066 * Always return NULL for ID 0.
1068 struct gl_buffer_object
*
1069 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1074 return (struct gl_buffer_object
*)
1075 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1079 struct gl_buffer_object
*
1080 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1085 return (struct gl_buffer_object
*)
1086 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1090 * A convenience function for direct state access functions that throws
1091 * GL_INVALID_OPERATION if buffer is not the name of an existing
1094 struct gl_buffer_object
*
1095 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1098 struct gl_buffer_object
*bufObj
;
1100 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1101 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1102 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1103 "%s(non-existent buffer object %u)", caller
, buffer
);
1112 * Look up a buffer object for a multi-bind function.
1114 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1115 * of generating an error if the buffer ID is not zero or the name
1116 * of an existing buffer object.
1118 * If the buffer ID refers to an existing buffer object, a pointer
1119 * to the buffer object is returned. If the ID is zero, a pointer
1120 * to the shared NullBufferObj is returned. If the ID is not zero
1121 * and does not refer to a valid buffer object, this function
1124 * This function assumes that the caller has already locked the
1125 * hash table mutex by calling
1126 * _mesa_HashLockMutex(ctx->Shared->BufferObjects).
1128 struct gl_buffer_object
*
1129 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1130 const GLuint
*buffers
,
1131 GLuint index
, const char *caller
)
1133 struct gl_buffer_object
*bufObj
;
1135 if (buffers
[index
] != 0) {
1136 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1138 /* The multi-bind functions don't create the buffer objects
1139 when they don't exist. */
1140 if (bufObj
== &DummyBufferObject
)
1143 bufObj
= ctx
->Shared
->NullBufferObj
;
1146 /* The ARB_multi_bind spec says:
1148 * "An INVALID_OPERATION error is generated if any value
1149 * in <buffers> is not zero or the name of an existing
1150 * buffer object (per binding)."
1152 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1153 "%s(buffers[%u]=%u is not zero or the name "
1154 "of an existing buffer object)",
1155 caller
, index
, buffers
[index
]);
1163 * If *ptr points to obj, set ptr = the Null/default buffer object.
1164 * This is a helper for buffer object deletion.
1165 * The GL spec says that deleting a buffer object causes it to get
1166 * unbound from all arrays in the current context.
1169 unbind(struct gl_context
*ctx
,
1170 struct gl_vertex_array_object
*vao
, unsigned index
,
1171 struct gl_buffer_object
*obj
)
1173 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1174 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1175 vao
->BufferBinding
[index
].Offset
,
1176 vao
->BufferBinding
[index
].Stride
);
1182 * Plug default/fallback buffer object functions into the device
1186 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1188 /* GL_ARB_vertex/pixel_buffer_object */
1189 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1190 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1191 driver
->BufferData
= buffer_data_fallback
;
1192 driver
->BufferSubData
= buffer_sub_data_fallback
;
1193 driver
->GetBufferSubData
= buffer_get_subdata
;
1194 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1196 /* GL_ARB_clear_buffer_object */
1197 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1199 /* GL_ARB_map_buffer_range */
1200 driver
->MapBufferRange
= map_buffer_range_fallback
;
1201 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1203 /* GL_ARB_copy_buffer */
1204 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1209 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1210 struct gl_buffer_object
*bufObj
)
1212 for (int i
= 0; i
< MAP_COUNT
; i
++) {
1213 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1214 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1215 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1216 bufObj
->Mappings
[i
].AccessFlags
= 0;
1222 /**********************************************************************/
1224 /**********************************************************************/
1227 _mesa_BindBuffer_no_error(GLenum target
, GLuint buffer
)
1229 GET_CURRENT_CONTEXT(ctx
);
1231 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1232 bind_buffer_object(ctx
, bindTarget
, buffer
);
1237 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1239 GET_CURRENT_CONTEXT(ctx
);
1241 if (MESA_VERBOSE
& VERBOSE_API
) {
1242 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1243 _mesa_enum_to_string(target
), buffer
);
1246 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1248 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1249 _mesa_enum_to_string(target
));
1253 bind_buffer_object(ctx
, bindTarget
, buffer
);
1257 * Binds a buffer object to a binding point.
1259 * The caller is responsible for validating the offset,
1260 * flushing the vertices and updating NewDriverState.
1263 set_buffer_binding(struct gl_context
*ctx
,
1264 struct gl_buffer_binding
*binding
,
1265 struct gl_buffer_object
*bufObj
,
1268 bool autoSize
, gl_buffer_usage usage
)
1270 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1272 binding
->Offset
= offset
;
1273 binding
->Size
= size
;
1274 binding
->AutomaticSize
= autoSize
;
1276 /* If this is a real buffer object, mark it has having been used
1277 * at some point as an atomic counter buffer.
1280 bufObj
->UsageHistory
|= usage
;
1284 set_buffer_multi_binding(struct gl_context
*ctx
,
1285 const GLuint
*buffers
,
1288 struct gl_buffer_binding
*binding
,
1292 gl_buffer_usage usage
)
1294 struct gl_buffer_object
*bufObj
;
1295 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[idx
])
1296 bufObj
= binding
->BufferObject
;
1298 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, idx
, caller
);
1301 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1302 set_buffer_binding(ctx
, binding
, bufObj
, -1, -1, !range
, usage
);
1304 set_buffer_binding(ctx
, binding
, bufObj
, offset
, size
, !range
, usage
);
1309 bind_buffer(struct gl_context
*ctx
,
1310 struct gl_buffer_binding
*binding
,
1311 struct gl_buffer_object
*bufObj
,
1315 uint64_t driver_state
,
1316 gl_buffer_usage usage
)
1318 if (binding
->BufferObject
== bufObj
&&
1319 binding
->Offset
== offset
&&
1320 binding
->Size
== size
&&
1321 binding
->AutomaticSize
== autoSize
) {
1325 FLUSH_VERTICES(ctx
, 0);
1326 ctx
->NewDriverState
|= driver_state
;
1328 set_buffer_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
, usage
);
1332 * Binds a buffer object to a uniform buffer binding point.
1334 * Unlike set_buffer_binding(), this function also flushes vertices
1335 * and updates NewDriverState. It also checks if the binding
1336 * has actually changed before updating it.
1339 bind_uniform_buffer(struct gl_context
*ctx
,
1341 struct gl_buffer_object
*bufObj
,
1346 bind_buffer(ctx
, &ctx
->UniformBufferBindings
[index
],
1347 bufObj
, offset
, size
, autoSize
,
1348 ctx
->DriverFlags
.NewUniformBuffer
,
1349 USAGE_UNIFORM_BUFFER
);
1353 * Binds a buffer object to a shader storage buffer binding point.
1355 * Unlike set_ssbo_binding(), this function also flushes vertices
1356 * and updates NewDriverState. It also checks if the binding
1357 * has actually changed before updating it.
1360 bind_shader_storage_buffer(struct gl_context
*ctx
,
1362 struct gl_buffer_object
*bufObj
,
1367 bind_buffer(ctx
, &ctx
->ShaderStorageBufferBindings
[index
],
1368 bufObj
, offset
, size
, autoSize
,
1369 ctx
->DriverFlags
.NewShaderStorageBuffer
,
1370 USAGE_SHADER_STORAGE_BUFFER
);
1374 * Binds a buffer object to an atomic buffer binding point.
1376 * Unlike set_atomic_binding(), this function also flushes vertices
1377 * and updates NewDriverState. It also checks if the binding
1378 * has actually changed before updating it.
1381 bind_atomic_buffer(struct gl_context
*ctx
, unsigned index
,
1382 struct gl_buffer_object
*bufObj
, GLintptr offset
,
1383 GLsizeiptr size
, GLboolean autoSize
)
1385 bind_buffer(ctx
, &ctx
->AtomicBufferBindings
[index
],
1386 bufObj
, offset
, size
, autoSize
,
1387 ctx
->DriverFlags
.NewAtomicBuffer
,
1388 USAGE_ATOMIC_COUNTER_BUFFER
);
1392 * Bind a buffer object to a uniform block binding point.
1393 * As above, but offset = 0.
1396 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
1398 struct gl_buffer_object
*bufObj
)
1400 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
1401 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1405 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
1407 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1408 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1410 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1414 * Bind a buffer object to a shader storage block binding point.
1415 * As above, but offset = 0.
1418 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
1420 struct gl_buffer_object
*bufObj
)
1422 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
1423 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1427 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
1429 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1430 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1432 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1436 * Bind a buffer object to a shader storage block binding point.
1437 * As above, but offset = 0.
1440 bind_buffer_base_atomic_buffer(struct gl_context
*ctx
,
1442 struct gl_buffer_object
*bufObj
)
1444 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
1445 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1449 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
1451 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1452 bind_atomic_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1454 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1458 * Delete a set of buffer objects.
1460 * \param n Number of buffer objects to delete.
1461 * \param ids Array of \c n buffer object IDs.
1464 delete_buffers(struct gl_context
*ctx
, GLsizei n
, const GLuint
*ids
)
1466 FLUSH_VERTICES(ctx
, 0);
1468 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1470 for (GLsizei i
= 0; i
< n
; i
++) {
1471 struct gl_buffer_object
*bufObj
=
1472 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1474 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1477 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1479 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1481 /* unbind any vertex pointers bound to this buffer */
1482 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1483 unbind(ctx
, vao
, j
, bufObj
);
1486 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1487 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1489 if (vao
->IndexBufferObj
== bufObj
) {
1490 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1493 /* unbind ARB_draw_indirect binding point */
1494 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1495 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1498 /* unbind ARB_indirect_parameters binding point */
1499 if (ctx
->ParameterBuffer
== bufObj
) {
1500 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1503 /* unbind ARB_compute_shader binding point */
1504 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1505 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1508 /* unbind ARB_copy_buffer binding points */
1509 if (ctx
->CopyReadBuffer
== bufObj
) {
1510 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1512 if (ctx
->CopyWriteBuffer
== bufObj
) {
1513 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1516 /* unbind transform feedback binding points */
1517 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1518 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1520 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1521 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1522 _mesa_bind_buffer_base_transform_feedback(ctx
,
1523 ctx
->TransformFeedback
.CurrentObject
,
1524 j
, ctx
->Shared
->NullBufferObj
,
1529 /* unbind UBO binding points */
1530 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1531 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1532 bind_buffer_base_uniform_buffer(ctx
, j
,
1533 ctx
->Shared
->NullBufferObj
);
1537 if (ctx
->UniformBuffer
== bufObj
) {
1538 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1541 /* unbind SSBO binding points */
1542 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1543 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1544 bind_buffer_base_shader_storage_buffer(ctx
, j
,
1545 ctx
->Shared
->NullBufferObj
);
1549 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1550 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1553 /* unbind Atomci Buffer binding points */
1554 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1555 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1556 bind_buffer_base_atomic_buffer(ctx
, j
,
1557 ctx
->Shared
->NullBufferObj
);
1561 if (ctx
->AtomicBuffer
== bufObj
) {
1562 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1565 /* unbind any pixel pack/unpack pointers bound to this buffer */
1566 if (ctx
->Pack
.BufferObj
== bufObj
) {
1567 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1569 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1570 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1573 if (ctx
->Texture
.BufferObject
== bufObj
) {
1574 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1577 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1578 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1581 /* unbind query buffer binding point */
1582 if (ctx
->QueryBuffer
== bufObj
) {
1583 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1586 /* The ID is immediately freed for re-use */
1587 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1588 /* Make sure we do not run into the classic ABA problem on bind.
1589 * We don't want to allow re-binding a buffer object that's been
1590 * "deleted" by glDeleteBuffers().
1592 * The explicit rebinding to the default object in the current context
1593 * prevents the above in the current context, but another context
1594 * sharing the same objects might suffer from this problem.
1595 * The alternative would be to do the hash lookup in any case on bind
1596 * which would introduce more runtime overhead than this.
1598 bufObj
->DeletePending
= GL_TRUE
;
1599 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1603 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1608 _mesa_DeleteBuffers_no_error(GLsizei n
, const GLuint
*ids
)
1610 GET_CURRENT_CONTEXT(ctx
);
1611 delete_buffers(ctx
, n
, ids
);
1616 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1618 GET_CURRENT_CONTEXT(ctx
);
1621 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1625 delete_buffers(ctx
, n
, ids
);
1630 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1631 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1635 create_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1638 struct gl_buffer_object
*buf
;
1644 * This must be atomic (generation and allocation of buffer object IDs)
1646 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1648 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1650 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1651 * DummyBufferObject. Otherwise, create a new buffer object and insert
1654 for (int i
= 0; i
< n
; i
++) {
1655 buffers
[i
] = first
+ i
;
1657 assert(ctx
->Driver
.NewBufferObject
);
1658 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1660 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCreateBuffers");
1661 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1666 buf
= &DummyBufferObject
;
1668 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1671 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1676 create_buffers_err(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1678 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1680 if (MESA_VERBOSE
& VERBOSE_API
)
1681 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1684 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1688 create_buffers(ctx
, n
, buffers
, dsa
);
1692 * Generate a set of unique buffer object IDs and store them in \c buffers.
1694 * \param n Number of IDs to generate.
1695 * \param buffers Array of \c n locations to store the IDs.
1698 _mesa_GenBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1700 GET_CURRENT_CONTEXT(ctx
);
1701 create_buffers(ctx
, n
, buffers
, false);
1706 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1708 GET_CURRENT_CONTEXT(ctx
);
1709 create_buffers_err(ctx
, n
, buffers
, false);
1713 * Create a set of buffer objects and store their unique IDs in \c buffers.
1715 * \param n Number of IDs to generate.
1716 * \param buffers Array of \c n locations to store the IDs.
1719 _mesa_CreateBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1721 GET_CURRENT_CONTEXT(ctx
);
1722 create_buffers(ctx
, n
, buffers
, true);
1727 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1729 GET_CURRENT_CONTEXT(ctx
);
1730 create_buffers_err(ctx
, n
, buffers
, true);
1735 * Determine if ID is the name of a buffer object.
1737 * \param id ID of the potential buffer object.
1738 * \return \c GL_TRUE if \c id is the name of a buffer object,
1739 * \c GL_FALSE otherwise.
1741 GLboolean GLAPIENTRY
1742 _mesa_IsBuffer(GLuint id
)
1744 struct gl_buffer_object
*bufObj
;
1745 GET_CURRENT_CONTEXT(ctx
);
1746 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1748 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1750 return bufObj
&& bufObj
!= &DummyBufferObject
;
1755 validate_buffer_storage(struct gl_context
*ctx
,
1756 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1757 GLbitfield flags
, const char *func
)
1760 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1764 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1766 GL_MAP_PERSISTENT_BIT
|
1767 GL_MAP_COHERENT_BIT
|
1768 GL_DYNAMIC_STORAGE_BIT
|
1769 GL_CLIENT_STORAGE_BIT
;
1771 if (ctx
->Extensions
.ARB_sparse_buffer
)
1772 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1774 if (flags
& ~valid_flags
) {
1775 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1779 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1781 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1782 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1783 * MAP_READ_BIT or MAP_WRITE_BIT."
1785 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1786 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1787 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1791 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1792 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1793 _mesa_error(ctx
, GL_INVALID_VALUE
,
1794 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1798 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1799 _mesa_error(ctx
, GL_INVALID_VALUE
,
1800 "%s(COHERENT and flags!=PERSISTENT)", func
);
1804 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1805 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1814 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1815 struct gl_memory_object
*memObj
, GLenum target
,
1816 GLsizeiptr size
, const GLvoid
*data
, GLbitfield flags
,
1817 GLuint64 offset
, const char *func
)
1821 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1822 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1824 FLUSH_VERTICES(ctx
, 0);
1826 bufObj
->Written
= GL_TRUE
;
1827 bufObj
->Immutable
= GL_TRUE
;
1828 bufObj
->MinMaxCacheDirty
= true;
1831 assert(ctx
->Driver
.BufferDataMem
);
1832 res
= ctx
->Driver
.BufferDataMem(ctx
, target
, size
, memObj
, offset
,
1833 GL_DYNAMIC_DRAW
, bufObj
);
1836 assert(ctx
->Driver
.BufferData
);
1837 res
= ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1842 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1843 /* Even though the interaction between AMD_pinned_memory and
1844 * glBufferStorage is not described in the spec, Graham Sellers
1845 * said that it should behave the same as glBufferData.
1847 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1850 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1856 static ALWAYS_INLINE
void
1857 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1858 const GLvoid
*data
, GLbitfield flags
,
1859 GLuint memory
, GLuint64 offset
,
1860 bool dsa
, bool mem
, bool no_error
, const char *func
)
1862 GET_CURRENT_CONTEXT(ctx
);
1863 struct gl_buffer_object
*bufObj
;
1864 struct gl_memory_object
*memObj
= NULL
;
1868 if (!ctx
->Extensions
.EXT_memory_object
) {
1869 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(unsupported)", func
);
1873 /* From the EXT_external_objects spec:
1875 * "An INVALID_VALUE error is generated by BufferStorageMemEXT and
1876 * NamedBufferStorageMemEXT if <memory> is 0, or ..."
1879 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(memory == 0)", func
);
1883 memObj
= _mesa_lookup_memory_object(ctx
, memory
);
1887 /* From the EXT_external_objects spec:
1889 * "An INVALID_OPERATION error is generated if <memory> names a
1890 * valid memory object which has no associated memory."
1892 if (!no_error
&& !memObj
->Immutable
) {
1893 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(no associated memory)",
1901 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1903 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1909 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1910 bufObj
= *bufObjPtr
;
1912 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1918 if (no_error
|| validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1919 buffer_storage(ctx
, bufObj
, memObj
, target
, size
, data
, flags
, offset
, func
);
1924 _mesa_BufferStorage_no_error(GLenum target
, GLsizeiptr size
,
1925 const GLvoid
*data
, GLbitfield flags
)
1927 inlined_buffer_storage(target
, 0, size
, data
, flags
, GL_NONE
, 0,
1928 false, false, true, "glBufferStorage");
1933 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1936 inlined_buffer_storage(target
, 0, size
, data
, flags
, GL_NONE
, 0,
1937 false, false, false, "glBufferStorage");
1941 _mesa_NamedBufferStorageEXT(GLuint buffer
, GLsizeiptr size
,
1942 const GLvoid
*data
, GLbitfield flags
)
1944 GET_CURRENT_CONTEXT(ctx
);
1946 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1947 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1948 &bufObj
, "glNamedBufferStorageEXT"))
1951 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, GL_NONE
, 0,
1952 true, false, false, "glNamedBufferStorageEXT");
1957 _mesa_BufferStorageMemEXT(GLenum target
, GLsizeiptr size
,
1958 GLuint memory
, GLuint64 offset
)
1960 inlined_buffer_storage(target
, 0, size
, NULL
, 0, memory
, offset
,
1961 false, true, false, "glBufferStorageMemEXT");
1966 _mesa_BufferStorageMemEXT_no_error(GLenum target
, GLsizeiptr size
,
1967 GLuint memory
, GLuint64 offset
)
1969 inlined_buffer_storage(target
, 0, size
, NULL
, 0, memory
, offset
,
1970 false, true, true, "glBufferStorageMemEXT");
1975 _mesa_NamedBufferStorage_no_error(GLuint buffer
, GLsizeiptr size
,
1976 const GLvoid
*data
, GLbitfield flags
)
1978 /* In direct state access, buffer objects have an unspecified target
1979 * since they are not required to be bound.
1981 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, GL_NONE
, 0,
1982 true, false, true, "glNamedBufferStorage");
1987 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1990 /* In direct state access, buffer objects have an unspecified target
1991 * since they are not required to be bound.
1993 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, GL_NONE
, 0,
1994 true, false, false, "glNamedBufferStorage");
1998 _mesa_NamedBufferStorageMemEXT(GLuint buffer
, GLsizeiptr size
,
1999 GLuint memory
, GLuint64 offset
)
2001 inlined_buffer_storage(GL_NONE
, buffer
, size
, GL_NONE
, 0, memory
, offset
,
2002 true, true, false, "glNamedBufferStorageMemEXT");
2007 _mesa_NamedBufferStorageMemEXT_no_error(GLuint buffer
, GLsizeiptr size
,
2008 GLuint memory
, GLuint64 offset
)
2010 inlined_buffer_storage(GL_NONE
, buffer
, size
, GL_NONE
, 0, memory
, offset
,
2011 true, true, true, "glNamedBufferStorageMemEXT");
2015 static ALWAYS_INLINE
void
2016 buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2017 GLenum target
, GLsizeiptr size
, const GLvoid
*data
, GLenum usage
,
2018 const char *func
, bool no_error
)
2022 if (MESA_VERBOSE
& VERBOSE_API
) {
2023 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
2025 _mesa_enum_to_string(target
),
2026 (long int) size
, data
,
2027 _mesa_enum_to_string(usage
));
2032 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
2037 case GL_STREAM_DRAW_ARB
:
2038 valid_usage
= (ctx
->API
!= API_OPENGLES
);
2040 case GL_STATIC_DRAW_ARB
:
2041 case GL_DYNAMIC_DRAW_ARB
:
2044 case GL_STREAM_READ_ARB
:
2045 case GL_STREAM_COPY_ARB
:
2046 case GL_STATIC_READ_ARB
:
2047 case GL_STATIC_COPY_ARB
:
2048 case GL_DYNAMIC_READ_ARB
:
2049 case GL_DYNAMIC_COPY_ARB
:
2050 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
2053 valid_usage
= false;
2058 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
2059 _mesa_enum_to_string(usage
));
2063 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
2064 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
2069 /* Unmap the existing buffer. We'll replace it now. Not an error. */
2070 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
2072 FLUSH_VERTICES(ctx
, 0);
2074 bufObj
->Written
= GL_TRUE
;
2075 bufObj
->MinMaxCacheDirty
= true;
2078 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
2079 bufObj
->Name
, size
, data
, usage
);
2086 assert(ctx
->Driver
.BufferData
);
2087 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
2090 GL_DYNAMIC_STORAGE_BIT
,
2092 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
2094 /* From GL_AMD_pinned_memory:
2096 * INVALID_OPERATION is generated by BufferData if <target> is
2097 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
2098 * mapped to the GPU address space.
2100 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2103 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2109 buffer_data_error(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2110 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2111 GLenum usage
, const char *func
)
2113 buffer_data(ctx
, bufObj
, target
, size
, data
, usage
, func
, false);
2117 buffer_data_no_error(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2118 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2119 GLenum usage
, const char *func
)
2121 buffer_data(ctx
, bufObj
, target
, size
, data
, usage
, func
, true);
2125 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2126 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2127 GLenum usage
, const char *func
)
2129 buffer_data_error(ctx
, bufObj
, target
, size
, data
, usage
, func
);
2133 _mesa_BufferData_no_error(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2136 GET_CURRENT_CONTEXT(ctx
);
2138 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
2139 buffer_data_no_error(ctx
, *bufObj
, target
, size
, data
, usage
,
2144 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
2145 const GLvoid
*data
, GLenum usage
)
2147 GET_CURRENT_CONTEXT(ctx
);
2148 struct gl_buffer_object
*bufObj
;
2150 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
2154 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
2159 _mesa_NamedBufferData_no_error(GLuint buffer
, GLsizeiptr size
,
2160 const GLvoid
*data
, GLenum usage
)
2162 GET_CURRENT_CONTEXT(ctx
);
2164 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2165 buffer_data_no_error(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2166 "glNamedBufferData");
2170 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
2173 GET_CURRENT_CONTEXT(ctx
);
2174 struct gl_buffer_object
*bufObj
;
2176 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
2180 /* In direct state access, buffer objects have an unspecified target since
2181 * they are not required to be bound.
2183 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2184 "glNamedBufferData");
2188 _mesa_NamedBufferDataEXT(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
2191 GET_CURRENT_CONTEXT(ctx
);
2193 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2194 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
2195 &bufObj
, "glNamedBufferDataEXT"))
2198 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2199 "glNamedBufferDataEXT");
2203 validate_buffer_sub_data(struct gl_context
*ctx
,
2204 struct gl_buffer_object
*bufObj
,
2205 GLintptr offset
, GLsizeiptr size
,
2208 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2210 /* error already recorded */
2214 if (bufObj
->Immutable
&&
2215 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
2216 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2220 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2221 bufObj
->Usage
== GL_STATIC_COPY
) &&
2222 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
- 1) {
2223 /* If the application declared the buffer as static draw/copy or stream
2224 * draw, it should not be frequently modified with glBufferSubData.
2226 BUFFER_USAGE_WARNING(ctx
,
2227 "using %s(buffer %u, offset %u, size %u) to "
2228 "update a %s buffer",
2229 func
, bufObj
->Name
, offset
, size
,
2230 _mesa_enum_to_string(bufObj
->Usage
));
2238 * Implementation for glBufferSubData and glNamedBufferSubData.
2240 * \param ctx GL context.
2241 * \param bufObj The buffer object.
2242 * \param offset Offset of the first byte of the subdata range.
2243 * \param size Size, in bytes, of the subdata range.
2244 * \param data The data store.
2245 * \param func Name of calling function for recording errors.
2249 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2250 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
)
2255 bufObj
->NumSubDataCalls
++;
2256 bufObj
->Written
= GL_TRUE
;
2257 bufObj
->MinMaxCacheDirty
= true;
2259 assert(ctx
->Driver
.BufferSubData
);
2260 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
2264 static ALWAYS_INLINE
void
2265 buffer_sub_data(GLenum target
, GLuint buffer
, GLintptr offset
,
2266 GLsizeiptr size
, const GLvoid
*data
,
2267 bool dsa
, bool no_error
, const char *func
)
2269 GET_CURRENT_CONTEXT(ctx
);
2270 struct gl_buffer_object
*bufObj
;
2274 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2276 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
2282 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2283 bufObj
= *bufObjPtr
;
2285 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
2291 if (no_error
|| validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
2292 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
2297 _mesa_BufferSubData_no_error(GLenum target
, GLintptr offset
,
2298 GLsizeiptr size
, const GLvoid
*data
)
2300 buffer_sub_data(target
, 0, offset
, size
, data
, false, true,
2306 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
2307 GLsizeiptr size
, const GLvoid
*data
)
2309 buffer_sub_data(target
, 0, offset
, size
, data
, false, false,
2314 _mesa_NamedBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
2315 GLsizeiptr size
, const GLvoid
*data
)
2317 buffer_sub_data(0, buffer
, offset
, size
, data
, true, true,
2318 "glNamedBufferSubData");
2322 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
2323 GLsizeiptr size
, const GLvoid
*data
)
2325 buffer_sub_data(0, buffer
, offset
, size
, data
, true, false,
2326 "glNamedBufferSubData");
2330 _mesa_NamedBufferSubDataEXT(GLuint buffer
, GLintptr offset
,
2331 GLsizeiptr size
, const GLvoid
*data
)
2333 GET_CURRENT_CONTEXT(ctx
);
2335 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2336 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
2337 &bufObj
, "glNamedBufferSubDataEXT"))
2340 if (validate_buffer_sub_data(ctx
, bufObj
, offset
, size
,
2341 "glNamedBufferSubDataEXT")) {
2342 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
2348 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
2349 GLsizeiptr size
, GLvoid
*data
)
2351 GET_CURRENT_CONTEXT(ctx
);
2352 struct gl_buffer_object
*bufObj
;
2354 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
2355 GL_INVALID_OPERATION
);
2359 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2360 "glGetBufferSubData")) {
2364 assert(ctx
->Driver
.GetBufferSubData
);
2365 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2369 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
2370 GLsizeiptr size
, GLvoid
*data
)
2372 GET_CURRENT_CONTEXT(ctx
);
2373 struct gl_buffer_object
*bufObj
;
2375 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2376 "glGetNamedBufferSubData");
2380 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2381 "glGetNamedBufferSubData")) {
2385 assert(ctx
->Driver
.GetBufferSubData
);
2386 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2391 * \param subdata true if caller is *SubData, false if *Data
2393 static ALWAYS_INLINE
void
2394 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2395 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
2396 GLenum format
, GLenum type
, const GLvoid
*data
,
2397 const char *func
, bool subdata
, bool no_error
)
2399 mesa_format mesaFormat
;
2400 GLubyte clearValue
[MAX_PIXEL_BYTES
];
2401 GLsizeiptr clearValueSize
;
2403 /* This checks for disallowed mappings. */
2404 if (!no_error
&& !buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2410 mesaFormat
= _mesa_get_texbuffer_format(ctx
, internalformat
);
2412 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
2413 format
, type
, func
);
2416 if (mesaFormat
== MESA_FORMAT_NONE
)
2419 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
2421 (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0)) {
2422 _mesa_error(ctx
, GL_INVALID_VALUE
,
2423 "%s(offset or size is not a multiple of "
2424 "internalformat size)", func
);
2428 /* Bail early. Negative size has already been checked. */
2432 bufObj
->MinMaxCacheDirty
= true;
2435 /* clear to zeros, per the spec */
2436 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2437 NULL
, clearValueSize
, bufObj
);
2441 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
2442 format
, type
, data
, func
)) {
2446 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2447 clearValue
, clearValueSize
, bufObj
);
2451 clear_buffer_sub_data_error(struct gl_context
*ctx
,
2452 struct gl_buffer_object
*bufObj
,
2453 GLenum internalformat
, GLintptr offset
,
2454 GLsizeiptr size
, GLenum format
, GLenum type
,
2455 const GLvoid
*data
, const char *func
, bool subdata
)
2457 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2458 type
, data
, func
, subdata
, false);
2463 clear_buffer_sub_data_no_error(struct gl_context
*ctx
,
2464 struct gl_buffer_object
*bufObj
,
2465 GLenum internalformat
, GLintptr offset
,
2466 GLsizeiptr size
, GLenum format
, GLenum type
,
2467 const GLvoid
*data
, const char *func
,
2470 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2471 type
, data
, func
, subdata
, true);
2476 _mesa_ClearBufferData_no_error(GLenum target
, GLenum internalformat
,
2477 GLenum format
, GLenum type
, const GLvoid
*data
)
2479 GET_CURRENT_CONTEXT(ctx
);
2481 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
2482 clear_buffer_sub_data_no_error(ctx
, *bufObj
, internalformat
, 0,
2483 (*bufObj
)->Size
, format
, type
, data
,
2484 "glClearBufferData", false);
2489 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
2490 GLenum type
, const GLvoid
*data
)
2492 GET_CURRENT_CONTEXT(ctx
);
2493 struct gl_buffer_object
*bufObj
;
2495 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2499 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2500 format
, type
, data
, "glClearBufferData", false);
2505 _mesa_ClearNamedBufferData_no_error(GLuint buffer
, GLenum internalformat
,
2506 GLenum format
, GLenum type
,
2509 GET_CURRENT_CONTEXT(ctx
);
2511 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2512 clear_buffer_sub_data_no_error(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2513 format
, type
, data
, "glClearNamedBufferData",
2519 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2520 GLenum format
, GLenum type
, const GLvoid
*data
)
2522 GET_CURRENT_CONTEXT(ctx
);
2523 struct gl_buffer_object
*bufObj
;
2525 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2529 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2530 format
, type
, data
, "glClearNamedBufferData",
2536 _mesa_ClearBufferSubData_no_error(GLenum target
, GLenum internalformat
,
2537 GLintptr offset
, GLsizeiptr size
,
2538 GLenum format
, GLenum type
,
2541 GET_CURRENT_CONTEXT(ctx
);
2543 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
2544 clear_buffer_sub_data_no_error(ctx
, *bufObj
, internalformat
, offset
, size
,
2545 format
, type
, data
, "glClearBufferSubData",
2551 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2552 GLintptr offset
, GLsizeiptr size
,
2553 GLenum format
, GLenum type
,
2556 GET_CURRENT_CONTEXT(ctx
);
2557 struct gl_buffer_object
*bufObj
;
2559 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2563 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, offset
, size
,
2564 format
, type
, data
, "glClearBufferSubData",
2570 _mesa_ClearNamedBufferSubData_no_error(GLuint buffer
, GLenum internalformat
,
2571 GLintptr offset
, GLsizeiptr size
,
2572 GLenum format
, GLenum type
,
2575 GET_CURRENT_CONTEXT(ctx
);
2577 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2578 clear_buffer_sub_data_no_error(ctx
, bufObj
, internalformat
, offset
, size
,
2580 "glClearNamedBufferSubData", true);
2585 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2586 GLintptr offset
, GLsizeiptr size
,
2587 GLenum format
, GLenum type
,
2590 GET_CURRENT_CONTEXT(ctx
);
2591 struct gl_buffer_object
*bufObj
;
2593 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2594 "glClearNamedBufferSubData");
2598 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, offset
, size
,
2599 format
, type
, data
, "glClearNamedBufferSubData",
2604 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2606 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2607 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2608 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2609 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2610 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2616 validate_and_unmap_buffer(struct gl_context
*ctx
,
2617 struct gl_buffer_object
*bufObj
,
2620 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2622 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2623 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2624 "%s(buffer is not mapped)", func
);
2629 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2630 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2632 /* check that last 100 bytes are still = magic value */
2633 for (i
= 0; i
< 100; i
++) {
2634 GLuint pos
= bufObj
->Size
- i
- 1;
2635 if (buf
[pos
] != 123) {
2636 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2637 " at position %d (value = %u)\n",
2645 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2646 GLuint i
, unchanged
= 0;
2647 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2649 /* check which bytes changed */
2650 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2651 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2658 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2659 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2664 return unmap_buffer(ctx
, bufObj
);
2667 GLboolean GLAPIENTRY
2668 _mesa_UnmapBuffer_no_error(GLenum target
)
2670 GET_CURRENT_CONTEXT(ctx
);
2671 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2672 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2674 return unmap_buffer(ctx
, bufObj
);
2677 GLboolean GLAPIENTRY
2678 _mesa_UnmapBuffer(GLenum target
)
2680 GET_CURRENT_CONTEXT(ctx
);
2681 struct gl_buffer_object
*bufObj
;
2683 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2687 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2690 GLboolean GLAPIENTRY
2691 _mesa_UnmapNamedBufferEXT_no_error(GLuint buffer
)
2693 GET_CURRENT_CONTEXT(ctx
);
2694 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2696 return unmap_buffer(ctx
, bufObj
);
2699 GLboolean GLAPIENTRY
2700 _mesa_UnmapNamedBufferEXT(GLuint buffer
)
2702 GET_CURRENT_CONTEXT(ctx
);
2703 struct gl_buffer_object
*bufObj
;
2705 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2709 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2714 get_buffer_parameter(struct gl_context
*ctx
,
2715 struct gl_buffer_object
*bufObj
, GLenum pname
,
2716 GLint64
*params
, const char *func
)
2719 case GL_BUFFER_SIZE_ARB
:
2720 *params
= bufObj
->Size
;
2722 case GL_BUFFER_USAGE_ARB
:
2723 *params
= bufObj
->Usage
;
2725 case GL_BUFFER_ACCESS_ARB
:
2726 *params
= simplified_access_mode(ctx
,
2727 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2729 case GL_BUFFER_MAPPED_ARB
:
2730 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2732 case GL_BUFFER_ACCESS_FLAGS
:
2733 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2735 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2737 case GL_BUFFER_MAP_OFFSET
:
2738 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2740 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2742 case GL_BUFFER_MAP_LENGTH
:
2743 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2745 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2747 case GL_BUFFER_IMMUTABLE_STORAGE
:
2748 if (!ctx
->Extensions
.ARB_buffer_storage
)
2750 *params
= bufObj
->Immutable
;
2752 case GL_BUFFER_STORAGE_FLAGS
:
2753 if (!ctx
->Extensions
.ARB_buffer_storage
)
2755 *params
= bufObj
->StorageFlags
;
2764 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2765 _mesa_enum_to_string(pname
));
2770 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2772 GET_CURRENT_CONTEXT(ctx
);
2773 struct gl_buffer_object
*bufObj
;
2776 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2777 GL_INVALID_OPERATION
);
2781 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2782 "glGetBufferParameteriv"))
2783 return; /* Error already recorded. */
2785 *params
= (GLint
) parameter
;
2789 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2791 GET_CURRENT_CONTEXT(ctx
);
2792 struct gl_buffer_object
*bufObj
;
2795 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2796 GL_INVALID_OPERATION
);
2800 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2801 "glGetBufferParameteri64v"))
2802 return; /* Error already recorded. */
2804 *params
= parameter
;
2808 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2810 GET_CURRENT_CONTEXT(ctx
);
2811 struct gl_buffer_object
*bufObj
;
2814 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2815 "glGetNamedBufferParameteriv");
2819 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2820 "glGetNamedBufferParameteriv"))
2821 return; /* Error already recorded. */
2823 *params
= (GLint
) parameter
;
2827 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2830 GET_CURRENT_CONTEXT(ctx
);
2831 struct gl_buffer_object
*bufObj
;
2834 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2835 "glGetNamedBufferParameteri64v");
2839 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2840 "glGetNamedBufferParameteri64v"))
2841 return; /* Error already recorded. */
2843 *params
= parameter
;
2848 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2850 GET_CURRENT_CONTEXT(ctx
);
2851 struct gl_buffer_object
*bufObj
;
2853 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2854 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2855 "GL_BUFFER_MAP_POINTER)");
2859 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2860 GL_INVALID_OPERATION
);
2864 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2868 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2870 GET_CURRENT_CONTEXT(ctx
);
2871 struct gl_buffer_object
*bufObj
;
2873 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2874 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2875 "GL_BUFFER_MAP_POINTER)");
2879 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2880 "glGetNamedBufferPointerv");
2884 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2889 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2890 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2891 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2893 if (_mesa_check_disallowed_mapping(src
)) {
2894 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2895 "%s(readBuffer is mapped)", func
);
2899 if (_mesa_check_disallowed_mapping(dst
)) {
2900 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2901 "%s(writeBuffer is mapped)", func
);
2905 if (readOffset
< 0) {
2906 _mesa_error(ctx
, GL_INVALID_VALUE
,
2907 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2911 if (writeOffset
< 0) {
2912 _mesa_error(ctx
, GL_INVALID_VALUE
,
2913 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2918 _mesa_error(ctx
, GL_INVALID_VALUE
,
2919 "%s(size %d < 0)", func
, (int) size
);
2923 if (readOffset
+ size
> src
->Size
) {
2924 _mesa_error(ctx
, GL_INVALID_VALUE
,
2925 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2926 (int) readOffset
, (int) size
, (int) src
->Size
);
2930 if (writeOffset
+ size
> dst
->Size
) {
2931 _mesa_error(ctx
, GL_INVALID_VALUE
,
2932 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2933 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2938 if (readOffset
+ size
<= writeOffset
) {
2941 else if (writeOffset
+ size
<= readOffset
) {
2945 /* overlapping src/dst is illegal */
2946 _mesa_error(ctx
, GL_INVALID_VALUE
,
2947 "%s(overlapping src/dst)", func
);
2952 dst
->MinMaxCacheDirty
= true;
2954 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2958 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2959 GLintptr readOffset
, GLintptr writeOffset
,
2962 GET_CURRENT_CONTEXT(ctx
);
2964 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2965 struct gl_buffer_object
*src
= *src_ptr
;
2967 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2968 struct gl_buffer_object
*dst
= *dst_ptr
;
2970 dst
->MinMaxCacheDirty
= true;
2971 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2976 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2977 GLintptr readOffset
, GLintptr writeOffset
,
2980 GET_CURRENT_CONTEXT(ctx
);
2981 struct gl_buffer_object
*src
, *dst
;
2983 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2984 GL_INVALID_OPERATION
);
2988 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2989 GL_INVALID_OPERATION
);
2993 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2994 "glCopyBufferSubData");
2998 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2999 GLintptr readOffset
,
3000 GLintptr writeOffset
, GLsizeiptr size
)
3002 GET_CURRENT_CONTEXT(ctx
);
3004 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
3005 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
3007 dst
->MinMaxCacheDirty
= true;
3008 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
3013 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
3014 GLintptr readOffset
, GLintptr writeOffset
,
3017 GET_CURRENT_CONTEXT(ctx
);
3018 struct gl_buffer_object
*src
, *dst
;
3020 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
3021 "glCopyNamedBufferSubData");
3025 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
3026 "glCopyNamedBufferSubData");
3030 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
3031 "glCopyNamedBufferSubData");
3035 validate_map_buffer_range(struct gl_context
*ctx
,
3036 struct gl_buffer_object
*bufObj
, GLintptr offset
,
3037 GLsizeiptr length
, GLbitfield access
,
3040 GLbitfield allowed_access
;
3042 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
3045 _mesa_error(ctx
, GL_INVALID_VALUE
,
3046 "%s(offset %ld < 0)", func
, (long) offset
);
3051 _mesa_error(ctx
, GL_INVALID_VALUE
,
3052 "%s(length %ld < 0)", func
, (long) length
);
3056 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
3058 * "An INVALID_OPERATION error is generated for any of the following
3061 * * <length> is zero."
3063 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
3064 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
3068 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
3072 allowed_access
= GL_MAP_READ_BIT
|
3074 GL_MAP_INVALIDATE_RANGE_BIT
|
3075 GL_MAP_INVALIDATE_BUFFER_BIT
|
3076 GL_MAP_FLUSH_EXPLICIT_BIT
|
3077 GL_MAP_UNSYNCHRONIZED_BIT
;
3079 if (ctx
->Extensions
.ARB_buffer_storage
) {
3080 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
3081 GL_MAP_COHERENT_BIT
;
3084 if (access
& ~allowed_access
) {
3085 /* generate an error if any bits other than those allowed are set */
3086 _mesa_error(ctx
, GL_INVALID_VALUE
,
3087 "%s(access has undefined bits set)", func
);
3091 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
3092 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3093 "%s(access indicates neither read or write)", func
);
3097 if ((access
& GL_MAP_READ_BIT
) &&
3098 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
3099 GL_MAP_INVALIDATE_BUFFER_BIT
|
3100 GL_MAP_UNSYNCHRONIZED_BIT
))) {
3101 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3102 "%s(read access with disallowed bits)", func
);
3106 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
3107 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
3108 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3109 "%s(access has flush explicit without write)", func
);
3113 if (access
& GL_MAP_READ_BIT
&&
3114 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
3115 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3116 "%s(buffer does not allow read access)", func
);
3120 if (access
& GL_MAP_WRITE_BIT
&&
3121 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
3122 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3123 "%s(buffer does not allow write access)", func
);
3127 if (access
& GL_MAP_COHERENT_BIT
&&
3128 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
3129 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3130 "%s(buffer does not allow coherent access)", func
);
3134 if (access
& GL_MAP_PERSISTENT_BIT
&&
3135 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
3136 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3137 "%s(buffer does not allow persistent access)", func
);
3141 if (offset
+ length
> bufObj
->Size
) {
3142 _mesa_error(ctx
, GL_INVALID_VALUE
,
3143 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
3144 (unsigned long) offset
, (unsigned long) length
,
3145 (unsigned long) bufObj
->Size
);
3149 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
3150 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3151 "%s(buffer already mapped)", func
);
3155 if (access
& GL_MAP_WRITE_BIT
) {
3156 bufObj
->NumMapBufferWriteCalls
++;
3157 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
3158 bufObj
->Usage
== GL_STATIC_COPY
) &&
3159 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
3160 BUFFER_USAGE_WARNING(ctx
,
3161 "using %s(buffer %u, offset %u, length %u) to "
3162 "update a %s buffer",
3163 func
, bufObj
->Name
, offset
, length
,
3164 _mesa_enum_to_string(bufObj
->Usage
));
3172 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
3173 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
3176 if (!bufObj
->Size
) {
3177 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
3181 assert(ctx
->Driver
.MapBufferRange
);
3182 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
3185 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
3188 /* The driver callback should have set all these fields.
3189 * This is important because other modules (like VBO) might call
3190 * the driver function directly.
3192 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
3193 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
3194 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
3195 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
3198 if (access
& GL_MAP_WRITE_BIT
) {
3199 bufObj
->Written
= GL_TRUE
;
3200 bufObj
->MinMaxCacheDirty
= true;
3204 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
3205 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
3206 bufObj
->Name
, bufObj
->Size
, access
);
3207 /* Access must be write only */
3208 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
3210 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
3211 for (i
= 0; i
< bufObj
->Size
; i
++)
3218 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
3219 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
3221 /* buffer is 100 bytes larger than requested, fill with magic value */
3222 for (i
= 0; i
< 100; i
++) {
3223 buf
[bufObj
->Size
- i
- 1] = 123;
3232 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
3233 GLsizeiptr length
, GLbitfield access
)
3235 GET_CURRENT_CONTEXT(ctx
);
3237 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3238 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3240 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3241 "glMapBufferRange");
3245 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
3248 GET_CURRENT_CONTEXT(ctx
);
3249 struct gl_buffer_object
*bufObj
;
3251 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3252 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3253 "glMapBufferRange(ARB_map_buffer_range not supported)");
3257 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
3261 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3262 "glMapBufferRange"))
3265 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3266 "glMapBufferRange");
3270 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3271 GLsizeiptr length
, GLbitfield access
)
3273 GET_CURRENT_CONTEXT(ctx
);
3274 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3276 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3277 "glMapNamedBufferRange");
3281 map_named_buffer_range(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
3282 GLbitfield access
, bool dsa_ext
, const char *func
)
3284 GET_CURRENT_CONTEXT(ctx
);
3285 struct gl_buffer_object
*bufObj
= NULL
;
3287 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3288 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3289 "%s(ARB_map_buffer_range not supported)", func
);
3294 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3295 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
, &bufObj
, func
))
3298 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
3303 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
, func
))
3306 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
, func
);
3310 _mesa_MapNamedBufferRangeEXT(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
3313 return map_named_buffer_range(buffer
, offset
, length
, access
, true,
3314 "glMapNamedBufferRangeEXT");
3318 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
3321 return map_named_buffer_range(buffer
, offset
, length
, access
, false,
3322 "glMapNamedBufferRange");
3326 * Converts GLenum access from MapBuffer and MapNamedBuffer into
3327 * flags for input to map_buffer_range.
3329 * \return true if the type of requested access is permissible.
3332 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
3336 case GL_READ_ONLY_ARB
:
3337 *flags
= GL_MAP_READ_BIT
;
3338 return _mesa_is_desktop_gl(ctx
);
3339 case GL_WRITE_ONLY_ARB
:
3340 *flags
= GL_MAP_WRITE_BIT
;
3342 case GL_READ_WRITE_ARB
:
3343 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
3344 return _mesa_is_desktop_gl(ctx
);
3352 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
3354 GET_CURRENT_CONTEXT(ctx
);
3356 GLbitfield accessFlags
;
3357 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3359 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3360 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3362 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3367 _mesa_MapBuffer(GLenum target
, GLenum access
)
3369 GET_CURRENT_CONTEXT(ctx
);
3370 struct gl_buffer_object
*bufObj
;
3371 GLbitfield accessFlags
;
3373 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3374 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
3378 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
3382 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3386 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3391 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
3393 GET_CURRENT_CONTEXT(ctx
);
3395 GLbitfield accessFlags
;
3396 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3398 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3400 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3401 "glMapNamedBuffer");
3405 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
3407 GET_CURRENT_CONTEXT(ctx
);
3408 struct gl_buffer_object
*bufObj
;
3409 GLbitfield accessFlags
;
3411 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3412 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
3416 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
3420 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3421 "glMapNamedBuffer"))
3424 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3425 "glMapNamedBuffer");
3429 _mesa_MapNamedBufferEXT(GLuint buffer
, GLenum access
)
3431 GET_CURRENT_CONTEXT(ctx
);
3433 GLbitfield accessFlags
;
3434 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3435 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBufferEXT(invalid access)");
3439 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3440 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3441 &bufObj
, "glMapNamedBufferEXT"))
3444 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3445 "glMapNamedBufferEXT"))
3448 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3449 "glMapNamedBufferEXT");
3453 flush_mapped_buffer_range(struct gl_context
*ctx
,
3454 struct gl_buffer_object
*bufObj
,
3455 GLintptr offset
, GLsizeiptr length
,
3458 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3459 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3460 "%s(ARB_map_buffer_range not supported)", func
);
3465 _mesa_error(ctx
, GL_INVALID_VALUE
,
3466 "%s(offset %ld < 0)", func
, (long) offset
);
3471 _mesa_error(ctx
, GL_INVALID_VALUE
,
3472 "%s(length %ld < 0)", func
, (long) length
);
3476 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
3477 /* buffer is not mapped */
3478 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3479 "%s(buffer is not mapped)", func
);
3483 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
3484 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
3485 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3486 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
3490 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
3491 _mesa_error(ctx
, GL_INVALID_VALUE
,
3492 "%s(offset %ld + length %ld > mapped length %ld)", func
,
3493 (long) offset
, (long) length
,
3494 (long) bufObj
->Mappings
[MAP_USER
].Length
);
3498 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
3500 if (ctx
->Driver
.FlushMappedBufferRange
)
3501 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3506 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
3509 GET_CURRENT_CONTEXT(ctx
);
3510 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3511 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3513 if (ctx
->Driver
.FlushMappedBufferRange
)
3514 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3519 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
3522 GET_CURRENT_CONTEXT(ctx
);
3523 struct gl_buffer_object
*bufObj
;
3525 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
3526 GL_INVALID_OPERATION
);
3530 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3531 "glFlushMappedBufferRange");
3535 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3538 GET_CURRENT_CONTEXT(ctx
);
3539 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3541 if (ctx
->Driver
.FlushMappedBufferRange
)
3542 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3547 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
3550 GET_CURRENT_CONTEXT(ctx
);
3551 struct gl_buffer_object
*bufObj
;
3553 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
3554 "glFlushMappedNamedBufferRange");
3558 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3559 "glFlushMappedNamedBufferRange");
3563 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
, GLuint index
,
3564 struct gl_buffer_object
*bufObj
,
3565 GLintptr offset
, GLsizeiptr size
)
3567 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3572 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3573 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3577 * Bind a region of a buffer object to a uniform block binding point.
3578 * \param index the uniform buffer binding point index
3579 * \param bufObj the buffer object
3580 * \param offset offset to the start of buffer object region
3581 * \param size size of the buffer object region
3584 bind_buffer_range_uniform_buffer_err(struct gl_context
*ctx
, GLuint index
,
3585 struct gl_buffer_object
*bufObj
,
3586 GLintptr offset
, GLsizeiptr size
)
3588 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3589 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3593 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3594 _mesa_error(ctx
, GL_INVALID_VALUE
,
3595 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3596 ctx
->Const
.UniformBufferOffsetAlignment
);
3600 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3604 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3606 struct gl_buffer_object
*bufObj
,
3610 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3615 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3616 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3620 * Bind a region of a buffer object to a shader storage block binding point.
3621 * \param index the shader storage buffer binding point index
3622 * \param bufObj the buffer object
3623 * \param offset offset to the start of buffer object region
3624 * \param size size of the buffer object region
3627 bind_buffer_range_shader_storage_buffer_err(struct gl_context
*ctx
,
3629 struct gl_buffer_object
*bufObj
,
3630 GLintptr offset
, GLsizeiptr size
)
3632 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3633 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3637 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3638 _mesa_error(ctx
, GL_INVALID_VALUE
,
3639 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3640 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3644 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3648 bind_buffer_range_atomic_buffer(struct gl_context
*ctx
, GLuint index
,
3649 struct gl_buffer_object
*bufObj
,
3650 GLintptr offset
, GLsizeiptr size
)
3652 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3657 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3658 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3662 * Bind a region of a buffer object to an atomic storage block binding point.
3663 * \param index the shader storage buffer binding point index
3664 * \param bufObj the buffer object
3665 * \param offset offset to the start of buffer object region
3666 * \param size size of the buffer object region
3669 bind_buffer_range_atomic_buffer_err(struct gl_context
*ctx
,
3671 struct gl_buffer_object
*bufObj
,
3672 GLintptr offset
, GLsizeiptr size
)
3674 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3675 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3679 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3680 _mesa_error(ctx
, GL_INVALID_VALUE
,
3681 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3682 ATOMIC_COUNTER_SIZE
);
3686 bind_buffer_range_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
3690 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3692 const GLintptr
*offsets
,
3693 const GLsizeiptr
*sizes
)
3695 if (offsets
[index
] < 0) {
3696 /* The ARB_multi_bind spec says:
3698 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3699 * value in <offsets> is less than zero (per binding)."
3701 _mesa_error(ctx
, GL_INVALID_VALUE
,
3702 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3703 index
, (int64_t) offsets
[index
]);
3707 if (sizes
[index
] <= 0) {
3708 /* The ARB_multi_bind spec says:
3710 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3711 * value in <sizes> is less than or equal to zero (per binding)."
3713 _mesa_error(ctx
, GL_INVALID_VALUE
,
3714 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3715 index
, (int64_t) sizes
[index
]);
3723 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3724 GLuint first
, GLsizei count
,
3727 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3728 _mesa_error(ctx
, GL_INVALID_ENUM
,
3729 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3733 /* The ARB_multi_bind_spec says:
3735 * "An INVALID_OPERATION error is generated if <first> + <count> is
3736 * greater than the number of target-specific indexed binding points,
3737 * as described in section 6.7.1."
3739 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3740 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3741 "%s(first=%u + count=%d > the value of "
3742 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3743 caller
, first
, count
,
3744 ctx
->Const
.MaxUniformBufferBindings
);
3752 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3753 GLuint first
, GLsizei count
,
3756 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3757 _mesa_error(ctx
, GL_INVALID_ENUM
,
3758 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3762 /* The ARB_multi_bind_spec says:
3764 * "An INVALID_OPERATION error is generated if <first> + <count> is
3765 * greater than the number of target-specific indexed binding points,
3766 * as described in section 6.7.1."
3768 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3769 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3770 "%s(first=%u + count=%d > the value of "
3771 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3772 caller
, first
, count
,
3773 ctx
->Const
.MaxShaderStorageBufferBindings
);
3781 * Unbind all uniform buffers in the range
3782 * <first> through <first>+<count>-1
3785 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3787 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3789 for (int i
= 0; i
< count
; i
++)
3790 set_buffer_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3791 bufObj
, -1, -1, GL_TRUE
, 0);
3795 * Unbind all shader storage buffers in the range
3796 * <first> through <first>+<count>-1
3799 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3802 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3804 for (int i
= 0; i
< count
; i
++)
3805 set_buffer_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3806 bufObj
, -1, -1, GL_TRUE
, 0);
3810 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3811 const GLuint
*buffers
,
3813 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3816 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3819 /* Assume that at least one binding will be changed */
3820 FLUSH_VERTICES(ctx
, 0);
3821 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3824 /* The ARB_multi_bind spec says:
3826 * "If <buffers> is NULL, all bindings from <first> through
3827 * <first>+<count>-1 are reset to their unbound (zero) state.
3828 * In this case, the offsets and sizes associated with the
3829 * binding points are set to default values, ignoring
3830 * <offsets> and <sizes>."
3832 unbind_uniform_buffers(ctx
, first
, count
);
3836 /* Note that the error semantics for multi-bind commands differ from
3837 * those of other GL commands.
3839 * The Issues section in the ARB_multi_bind spec says:
3841 * "(11) Typically, OpenGL specifies that if an error is generated by a
3842 * command, that command has no effect. This is somewhat
3843 * unfortunate for multi-bind commands, because it would require a
3844 * first pass to scan the entire list of bound objects for errors
3845 * and then a second pass to actually perform the bindings.
3846 * Should we have different error semantics?
3848 * RESOLVED: Yes. In this specification, when the parameters for
3849 * one of the <count> binding points are invalid, that binding point
3850 * is not updated and an error will be generated. However, other
3851 * binding points in the same command will be updated if their
3852 * parameters are valid and no other error occurs."
3855 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3857 for (int i
= 0; i
< count
; i
++) {
3858 struct gl_buffer_binding
*binding
=
3859 &ctx
->UniformBufferBindings
[first
+ i
];
3860 GLintptr offset
= 0;
3861 GLsizeiptr size
= 0;
3864 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3867 /* The ARB_multi_bind spec says:
3869 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3870 * pair of values in <offsets> and <sizes> does not respectively
3871 * satisfy the constraints described for those parameters for the
3872 * specified target, as described in section 6.7.1 (per binding)."
3874 * Section 6.7.1 refers to table 6.5, which says:
3876 * "┌───────────────────────────────────────────────────────────────┐
3877 * │ Uniform buffer array bindings (see sec. 7.6) │
3878 * ├─────────────────────┬─────────────────────────────────────────┤
3880 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3881 * │ │ OFFSET_ALIGNMENT │
3883 * │ size restriction │ none │
3884 * └─────────────────────┴─────────────────────────────────────────┘"
3886 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3887 _mesa_error(ctx
, GL_INVALID_VALUE
,
3888 "glBindBuffersRange(offsets[%u]=%" PRId64
3889 " is misaligned; it must be a multiple of the value of "
3890 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3891 "target=GL_UNIFORM_BUFFER)",
3892 i
, (int64_t) offsets
[i
],
3893 ctx
->Const
.UniformBufferOffsetAlignment
);
3897 offset
= offsets
[i
];
3901 set_buffer_multi_binding(ctx
, buffers
, i
, caller
,
3902 binding
, offset
, size
, range
,
3903 USAGE_UNIFORM_BUFFER
);
3906 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3910 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3911 GLsizei count
, const GLuint
*buffers
,
3913 const GLintptr
*offsets
,
3914 const GLsizeiptr
*sizes
,
3917 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3920 /* Assume that at least one binding will be changed */
3921 FLUSH_VERTICES(ctx
, 0);
3922 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3925 /* The ARB_multi_bind spec says:
3927 * "If <buffers> is NULL, all bindings from <first> through
3928 * <first>+<count>-1 are reset to their unbound (zero) state.
3929 * In this case, the offsets and sizes associated with the
3930 * binding points are set to default values, ignoring
3931 * <offsets> and <sizes>."
3933 unbind_shader_storage_buffers(ctx
, first
, count
);
3937 /* Note that the error semantics for multi-bind commands differ from
3938 * those of other GL commands.
3940 * The Issues section in the ARB_multi_bind spec says:
3942 * "(11) Typically, OpenGL specifies that if an error is generated by a
3943 * command, that command has no effect. This is somewhat
3944 * unfortunate for multi-bind commands, because it would require a
3945 * first pass to scan the entire list of bound objects for errors
3946 * and then a second pass to actually perform the bindings.
3947 * Should we have different error semantics?
3949 * RESOLVED: Yes. In this specification, when the parameters for
3950 * one of the <count> binding points are invalid, that binding point
3951 * is not updated and an error will be generated. However, other
3952 * binding points in the same command will be updated if their
3953 * parameters are valid and no other error occurs."
3956 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3958 for (int i
= 0; i
< count
; i
++) {
3959 struct gl_buffer_binding
*binding
=
3960 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
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 * │ Shader storage buffer array bindings (see sec. 7.8) │
3979 * ├─────────────────────┬─────────────────────────────────────────┤
3981 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3982 * │ │ BUFFER_OFFSET_ALIGNMENT │
3984 * │ size restriction │ none │
3985 * └─────────────────────┴─────────────────────────────────────────┘"
3987 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3988 _mesa_error(ctx
, GL_INVALID_VALUE
,
3989 "glBindBuffersRange(offsets[%u]=%" PRId64
3990 " is misaligned; it must be a multiple of the value of "
3991 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3992 "target=GL_SHADER_STORAGE_BUFFER)",
3993 i
, (int64_t) offsets
[i
],
3994 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3998 offset
= offsets
[i
];
4002 set_buffer_multi_binding(ctx
, buffers
, i
, caller
,
4003 binding
, offset
, size
, range
,
4004 USAGE_SHADER_STORAGE_BUFFER
);
4007 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4011 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
4012 struct gl_transform_feedback_object
*tfObj
,
4013 GLuint first
, GLsizei count
, const char *caller
)
4015 if (!ctx
->Extensions
.EXT_transform_feedback
) {
4016 _mesa_error(ctx
, GL_INVALID_ENUM
,
4017 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
4021 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
4023 * "An INVALID_OPERATION error is generated :
4026 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
4027 * FEEDBACK_BUFFER and transform feedback is currently active."
4029 * We assume that this is also meant to apply to BindBuffersRange
4030 * and BindBuffersBase.
4032 if (tfObj
->Active
) {
4033 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4034 "%s(Changing transform feedback buffers while "
4035 "transform feedback is active)", caller
);
4039 /* The ARB_multi_bind_spec says:
4041 * "An INVALID_OPERATION error is generated if <first> + <count> is
4042 * greater than the number of target-specific indexed binding points,
4043 * as described in section 6.7.1."
4045 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
4046 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4047 "%s(first=%u + count=%d > the value of "
4048 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
4049 caller
, first
, count
,
4050 ctx
->Const
.MaxTransformFeedbackBuffers
);
4058 * Unbind all transform feedback buffers in the range
4059 * <first> through <first>+<count>-1
4062 unbind_xfb_buffers(struct gl_context
*ctx
,
4063 struct gl_transform_feedback_object
*tfObj
,
4064 GLuint first
, GLsizei count
)
4066 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
4068 for (int i
= 0; i
< count
; i
++)
4069 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
4074 bind_xfb_buffers(struct gl_context
*ctx
,
4075 GLuint first
, GLsizei count
,
4076 const GLuint
*buffers
,
4078 const GLintptr
*offsets
,
4079 const GLsizeiptr
*sizes
,
4082 struct gl_transform_feedback_object
*tfObj
=
4083 ctx
->TransformFeedback
.CurrentObject
;
4085 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
4088 /* Assume that at least one binding will be changed */
4089 FLUSH_VERTICES(ctx
, 0);
4090 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
4093 /* The ARB_multi_bind spec says:
4095 * "If <buffers> is NULL, all bindings from <first> through
4096 * <first>+<count>-1 are reset to their unbound (zero) state.
4097 * In this case, the offsets and sizes associated with the
4098 * binding points are set to default values, ignoring
4099 * <offsets> and <sizes>."
4101 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
4105 /* Note that the error semantics for multi-bind commands differ from
4106 * those of other GL commands.
4108 * The Issues section in the ARB_multi_bind spec says:
4110 * "(11) Typically, OpenGL specifies that if an error is generated by a
4111 * command, that command has no effect. This is somewhat
4112 * unfortunate for multi-bind commands, because it would require a
4113 * first pass to scan the entire list of bound objects for errors
4114 * and then a second pass to actually perform the bindings.
4115 * Should we have different error semantics?
4117 * RESOLVED: Yes. In this specification, when the parameters for
4118 * one of the <count> binding points are invalid, that binding point
4119 * is not updated and an error will be generated. However, other
4120 * binding points in the same command will be updated if their
4121 * parameters are valid and no other error occurs."
4124 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
4126 for (int i
= 0; i
< count
; i
++) {
4127 const GLuint index
= first
+ i
;
4128 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
4129 struct gl_buffer_object
*bufObj
;
4130 GLintptr offset
= 0;
4131 GLsizeiptr size
= 0;
4134 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
4137 /* The ARB_multi_bind spec says:
4139 * "An INVALID_VALUE error is generated by BindBuffersRange if any
4140 * pair of values in <offsets> and <sizes> does not respectively
4141 * satisfy the constraints described for those parameters for the
4142 * specified target, as described in section 6.7.1 (per binding)."
4144 * Section 6.7.1 refers to table 6.5, which says:
4146 * "┌───────────────────────────────────────────────────────────────┐
4147 * │ Transform feedback array bindings (see sec. 13.2.2) │
4148 * ├───────────────────────┬───────────────────────────────────────┤
4150 * │ offset restriction │ multiple of 4 │
4152 * │ size restriction │ multiple of 4 │
4153 * └───────────────────────┴───────────────────────────────────────┘"
4155 if (offsets
[i
] & 0x3) {
4156 _mesa_error(ctx
, GL_INVALID_VALUE
,
4157 "glBindBuffersRange(offsets[%u]=%" PRId64
4158 " is misaligned; it must be a multiple of 4 when "
4159 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
4160 i
, (int64_t) offsets
[i
]);
4164 if (sizes
[i
] & 0x3) {
4165 _mesa_error(ctx
, GL_INVALID_VALUE
,
4166 "glBindBuffersRange(sizes[%u]=%" PRId64
4167 " is misaligned; it must be a multiple of 4 when "
4168 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
4169 i
, (int64_t) sizes
[i
]);
4173 offset
= offsets
[i
];
4177 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
4178 bufObj
= boundBufObj
;
4180 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
4183 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
4187 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4191 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
4192 GLuint first
, GLsizei count
,
4195 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
4196 _mesa_error(ctx
, GL_INVALID_ENUM
,
4197 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
4201 /* The ARB_multi_bind_spec says:
4203 * "An INVALID_OPERATION error is generated if <first> + <count> is
4204 * greater than the number of target-specific indexed binding points,
4205 * as described in section 6.7.1."
4207 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
4208 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4209 "%s(first=%u + count=%d > the value of "
4210 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
4211 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
4219 * Unbind all atomic counter buffers in the range
4220 * <first> through <first>+<count>-1
4223 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
4225 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
4227 for (int i
= 0; i
< count
; i
++)
4228 set_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
4229 bufObj
, -1, -1, GL_TRUE
, 0);
4233 bind_atomic_buffers(struct gl_context
*ctx
,
4236 const GLuint
*buffers
,
4238 const GLintptr
*offsets
,
4239 const GLsizeiptr
*sizes
,
4242 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
4245 /* Assume that at least one binding will be changed */
4246 FLUSH_VERTICES(ctx
, 0);
4247 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
4250 /* The ARB_multi_bind spec says:
4252 * "If <buffers> is NULL, all bindings from <first> through
4253 * <first>+<count>-1 are reset to their unbound (zero) state.
4254 * In this case, the offsets and sizes associated with the
4255 * binding points are set to default values, ignoring
4256 * <offsets> and <sizes>."
4258 unbind_atomic_buffers(ctx
, first
, count
);
4262 /* Note that the error semantics for multi-bind commands differ from
4263 * those of other GL commands.
4265 * The Issues section in the ARB_multi_bind spec says:
4267 * "(11) Typically, OpenGL specifies that if an error is generated by a
4268 * command, that command has no effect. This is somewhat
4269 * unfortunate for multi-bind commands, because it would require a
4270 * first pass to scan the entire list of bound objects for errors
4271 * and then a second pass to actually perform the bindings.
4272 * Should we have different error semantics?
4274 * RESOLVED: Yes. In this specification, when the parameters for
4275 * one of the <count> binding points are invalid, that binding point
4276 * is not updated and an error will be generated. However, other
4277 * binding points in the same command will be updated if their
4278 * parameters are valid and no other error occurs."
4281 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
4283 for (int i
= 0; i
< count
; i
++) {
4284 struct gl_buffer_binding
*binding
=
4285 &ctx
->AtomicBufferBindings
[first
+ i
];
4286 GLintptr offset
= 0;
4287 GLsizeiptr size
= 0;
4290 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
4293 /* The ARB_multi_bind spec says:
4295 * "An INVALID_VALUE error is generated by BindBuffersRange if any
4296 * pair of values in <offsets> and <sizes> does not respectively
4297 * satisfy the constraints described for those parameters for the
4298 * specified target, as described in section 6.7.1 (per binding)."
4300 * Section 6.7.1 refers to table 6.5, which says:
4302 * "┌───────────────────────────────────────────────────────────────┐
4303 * │ Atomic counter array bindings (see sec. 7.7.2) │
4304 * ├───────────────────────┬───────────────────────────────────────┤
4306 * │ offset restriction │ multiple of 4 │
4308 * │ size restriction │ none │
4309 * └───────────────────────┴───────────────────────────────────────┘"
4311 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
4312 _mesa_error(ctx
, GL_INVALID_VALUE
,
4313 "glBindBuffersRange(offsets[%u]=%" PRId64
4314 " is misaligned; it must be a multiple of %d when "
4315 "target=GL_ATOMIC_COUNTER_BUFFER)",
4316 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
4320 offset
= offsets
[i
];
4324 set_buffer_multi_binding(ctx
, buffers
, i
, caller
,
4325 binding
, offset
, size
, range
,
4326 USAGE_ATOMIC_COUNTER_BUFFER
);
4329 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4332 static ALWAYS_INLINE
void
4333 bind_buffer_range(GLenum target
, GLuint index
, GLuint buffer
, GLintptr offset
,
4334 GLsizeiptr size
, bool no_error
)
4336 GET_CURRENT_CONTEXT(ctx
);
4337 struct gl_buffer_object
*bufObj
;
4339 if (MESA_VERBOSE
& VERBOSE_API
) {
4340 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
4341 _mesa_enum_to_string(target
), index
, buffer
,
4342 (unsigned long) offset
, (unsigned long) size
);
4346 bufObj
= ctx
->Shared
->NullBufferObj
;
4348 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4349 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4350 &bufObj
, "glBindBufferRange"))
4353 if (!no_error
&& !bufObj
) {
4354 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4355 "glBindBufferRange(invalid buffer=%u)", buffer
);
4362 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4363 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4364 index
, bufObj
, offset
, size
);
4366 case GL_UNIFORM_BUFFER
:
4367 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
4369 case GL_SHADER_STORAGE_BUFFER
:
4370 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
,
4373 case GL_ATOMIC_COUNTER_BUFFER
:
4374 bind_buffer_range_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
4377 unreachable("invalid BindBufferRange target with KHR_no_error");
4382 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
4389 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4390 if (!_mesa_validate_buffer_range_xfb(ctx
,
4391 ctx
->TransformFeedback
.CurrentObject
,
4392 index
, bufObj
, offset
, size
,
4396 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4397 index
, bufObj
, offset
, size
);
4399 case GL_UNIFORM_BUFFER
:
4400 bind_buffer_range_uniform_buffer_err(ctx
, index
, bufObj
, offset
,
4403 case GL_SHADER_STORAGE_BUFFER
:
4404 bind_buffer_range_shader_storage_buffer_err(ctx
, index
, bufObj
,
4407 case GL_ATOMIC_COUNTER_BUFFER
:
4408 bind_buffer_range_atomic_buffer_err(ctx
, index
, bufObj
,
4412 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4419 _mesa_BindBufferRange_no_error(GLenum target
, GLuint index
, GLuint buffer
,
4420 GLintptr offset
, GLsizeiptr size
)
4422 bind_buffer_range(target
, index
, buffer
, offset
, size
, true);
4426 _mesa_BindBufferRange(GLenum target
, GLuint index
,
4427 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
4429 bind_buffer_range(target
, index
, buffer
, offset
, size
, false);
4433 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4435 GET_CURRENT_CONTEXT(ctx
);
4436 struct gl_buffer_object
*bufObj
;
4438 if (MESA_VERBOSE
& VERBOSE_API
) {
4439 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4440 _mesa_enum_to_string(target
), index
, buffer
);
4444 bufObj
= ctx
->Shared
->NullBufferObj
;
4446 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4447 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4448 &bufObj
, "glBindBufferBase"))
4452 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4453 "glBindBufferBase(invalid buffer=%u)", buffer
);
4458 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4459 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4461 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4462 * zero and size equal to the size of buffer."
4464 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4466 * "If the parameter (starting offset or size) was not specified when the
4467 * buffer object was bound, zero is returned."
4469 * What happens if the size of the buffer changes? Does the size of the
4470 * buffer at the moment glBindBufferBase was called still play a role, like
4471 * the first quote would imply, or is the size meaningless in the
4472 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4473 * core spec page 45 says:
4475 * "It is equivalent to calling BindBufferRange with offset zero, while
4476 * size is determined by the size of the bound buffer at the time the
4479 * My interpretation is that the GL 4.1 spec was a clarification of the
4480 * behavior, not a change. In particular, this choice will only make
4481 * rendering work in cases where it would have had undefined results.
4485 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4486 _mesa_bind_buffer_base_transform_feedback(ctx
,
4487 ctx
->TransformFeedback
.CurrentObject
,
4488 index
, bufObj
, false);
4490 case GL_UNIFORM_BUFFER
:
4491 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4493 case GL_SHADER_STORAGE_BUFFER
:
4494 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4496 case GL_ATOMIC_COUNTER_BUFFER
:
4497 bind_buffer_base_atomic_buffer(ctx
, index
, bufObj
);
4500 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4506 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4507 const GLuint
*buffers
,
4508 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4510 GET_CURRENT_CONTEXT(ctx
);
4512 if (MESA_VERBOSE
& VERBOSE_API
) {
4513 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4514 _mesa_enum_to_string(target
), first
, count
,
4515 buffers
, offsets
, sizes
);
4519 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4520 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4521 "glBindBuffersRange");
4523 case GL_UNIFORM_BUFFER
:
4524 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4525 "glBindBuffersRange");
4527 case GL_SHADER_STORAGE_BUFFER
:
4528 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4529 "glBindBuffersRange");
4531 case GL_ATOMIC_COUNTER_BUFFER
:
4532 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4533 "glBindBuffersRange");
4536 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4537 _mesa_enum_to_string(target
));
4543 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4544 const GLuint
*buffers
)
4546 GET_CURRENT_CONTEXT(ctx
);
4548 if (MESA_VERBOSE
& VERBOSE_API
) {
4549 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4550 _mesa_enum_to_string(target
), first
, count
, buffers
);
4554 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4555 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4556 "glBindBuffersBase");
4558 case GL_UNIFORM_BUFFER
:
4559 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4560 "glBindBuffersBase");
4562 case GL_SHADER_STORAGE_BUFFER
:
4563 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4564 "glBindBuffersBase");
4566 case GL_ATOMIC_COUNTER_BUFFER
:
4567 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4568 "glBindBuffersBase");
4571 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4572 _mesa_enum_to_string(target
));
4577 static ALWAYS_INLINE
void
4578 invalidate_buffer_subdata(struct gl_context
*ctx
,
4579 struct gl_buffer_object
*bufObj
, GLintptr offset
,
4582 if (ctx
->Driver
.InvalidateBufferSubData
)
4583 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4587 _mesa_InvalidateBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
4590 GET_CURRENT_CONTEXT(ctx
);
4592 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4593 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4597 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4600 GET_CURRENT_CONTEXT(ctx
);
4601 struct gl_buffer_object
*bufObj
;
4602 const GLintptr end
= offset
+ length
;
4604 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4605 * Profile) spec says:
4607 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4608 * name of an existing buffer object."
4610 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4611 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4612 _mesa_error(ctx
, GL_INVALID_VALUE
,
4613 "glInvalidateBufferSubData(name = %u) invalid object",
4618 /* The GL_ARB_invalidate_subdata spec says:
4620 * "An INVALID_VALUE error is generated if <offset> or <length> is
4621 * negative, or if <offset> + <length> is greater than the value of
4624 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4625 _mesa_error(ctx
, GL_INVALID_VALUE
,
4626 "glInvalidateBufferSubData(invalid offset or length)");
4630 /* The OpenGL 4.4 (Core Profile) spec says:
4632 * "An INVALID_OPERATION error is generated if buffer is currently
4633 * mapped by MapBuffer or if the invalidate range intersects the range
4634 * currently mapped by MapBufferRange, unless it was mapped
4635 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4637 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4638 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4639 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4640 "glInvalidateBufferSubData(intersection with mapped "
4645 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4649 _mesa_InvalidateBufferData_no_error(GLuint buffer
)
4651 GET_CURRENT_CONTEXT(ctx
);
4653 struct gl_buffer_object
*bufObj
=_mesa_lookup_bufferobj(ctx
, buffer
);
4654 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4658 _mesa_InvalidateBufferData(GLuint buffer
)
4660 GET_CURRENT_CONTEXT(ctx
);
4661 struct gl_buffer_object
*bufObj
;
4663 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4664 * Profile) spec says:
4666 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4667 * name of an existing buffer object."
4669 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4670 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4671 _mesa_error(ctx
, GL_INVALID_VALUE
,
4672 "glInvalidateBufferData(name = %u) invalid object",
4677 /* The OpenGL 4.4 (Core Profile) spec says:
4679 * "An INVALID_OPERATION error is generated if buffer is currently
4680 * mapped by MapBuffer or if the invalidate range intersects the range
4681 * currently mapped by MapBufferRange, unless it was mapped
4682 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4684 if (_mesa_check_disallowed_mapping(bufObj
)) {
4685 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4686 "glInvalidateBufferData(intersection with mapped "
4691 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4695 buffer_page_commitment(struct gl_context
*ctx
,
4696 struct gl_buffer_object
*bufferObj
,
4697 GLintptr offset
, GLsizeiptr size
,
4698 GLboolean commit
, const char *func
)
4700 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4701 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4706 if (size
< 0 || size
> bufferObj
->Size
||
4707 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4708 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4713 /* The GL_ARB_sparse_buffer extension specification says:
4715 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4716 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4717 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4718 * not extend to the end of the buffer's data store."
4720 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4721 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4726 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4727 offset
+ size
!= bufferObj
->Size
) {
4728 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4733 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4737 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4740 GET_CURRENT_CONTEXT(ctx
);
4741 struct gl_buffer_object
*bufferObj
;
4743 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4748 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4749 "glBufferPageCommitmentARB");
4753 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4754 GLsizeiptr size
, GLboolean commit
)
4756 GET_CURRENT_CONTEXT(ctx
);
4757 struct gl_buffer_object
*bufferObj
;
4759 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4760 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4761 /* Note: the extension spec is not clear about the excpected error value. */
4762 _mesa_error(ctx
, GL_INVALID_VALUE
,
4763 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4768 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4769 "glNamedBufferPageCommitmentARB");