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 */
40 #include "bufferobj.h"
43 #include "glformats.h"
45 #include "transformfeedback.h"
50 /*#define BOUNDS_CHECK*/
54 * We count the number of buffer modification calls to check for
55 * inefficient buffer use. This is the number of such calls before we
58 #define BUFFER_WARNING_CALL_COUNT 4
62 * Helper to warn of possible performance issues, such as frequently
63 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
67 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
72 _mesa_gl_vdebug(ctx
, id
,
73 MESA_DEBUG_SOURCE_API
,
74 MESA_DEBUG_TYPE_PERFORMANCE
,
75 MESA_DEBUG_SEVERITY_MEDIUM
,
80 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
82 static GLuint id = 0; \
83 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
88 * Used as a placeholder for buffer objects between glGenBuffers() and
89 * glBindBuffer() so that glIsBuffer() can work correctly.
91 static struct gl_buffer_object DummyBufferObject
;
95 * Return pointer to address of a buffer object target.
96 * \param ctx the GL context
97 * \param target the buffer object target to be retrieved.
98 * \return pointer to pointer to the buffer object bound to \c target in the
99 * specified context or \c NULL if \c target is invalid.
101 static inline struct gl_buffer_object
**
102 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
104 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
106 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
107 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
111 case GL_ARRAY_BUFFER_ARB
:
112 return &ctx
->Array
.ArrayBufferObj
;
113 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.VAO
->IndexBufferObj
;
115 case GL_PIXEL_PACK_BUFFER_EXT
:
116 return &ctx
->Pack
.BufferObj
;
117 case GL_PIXEL_UNPACK_BUFFER_EXT
:
118 return &ctx
->Unpack
.BufferObj
;
119 case GL_COPY_READ_BUFFER
:
120 return &ctx
->CopyReadBuffer
;
121 case GL_COPY_WRITE_BUFFER
:
122 return &ctx
->CopyWriteBuffer
;
123 case GL_DRAW_INDIRECT_BUFFER
:
124 if ((ctx
->API
== API_OPENGL_CORE
&&
125 ctx
->Extensions
.ARB_draw_indirect
) ||
126 _mesa_is_gles31(ctx
)) {
127 return &ctx
->DrawIndirectBuffer
;
130 case GL_PARAMETER_BUFFER_ARB
:
131 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
132 return &ctx
->ParameterBuffer
;
135 case GL_DISPATCH_INDIRECT_BUFFER
:
136 if (_mesa_has_compute_shaders(ctx
)) {
137 return &ctx
->DispatchIndirectBuffer
;
140 case GL_TRANSFORM_FEEDBACK_BUFFER
:
141 if (ctx
->Extensions
.EXT_transform_feedback
) {
142 return &ctx
->TransformFeedback
.CurrentBuffer
;
145 case GL_TEXTURE_BUFFER
:
146 if (ctx
->API
== API_OPENGL_CORE
&&
147 ctx
->Extensions
.ARB_texture_buffer_object
) {
148 return &ctx
->Texture
.BufferObject
;
151 case GL_UNIFORM_BUFFER
:
152 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
153 return &ctx
->UniformBuffer
;
156 case GL_SHADER_STORAGE_BUFFER
:
157 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
158 return &ctx
->ShaderStorageBuffer
;
161 case GL_ATOMIC_COUNTER_BUFFER
:
162 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
163 return &ctx
->AtomicBuffer
;
166 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
167 if (ctx
->Extensions
.AMD_pinned_memory
) {
168 return &ctx
->ExternalVirtualMemoryBuffer
;
179 * Get the buffer object bound to the specified target in a GL context.
180 * \param ctx the GL context
181 * \param target the buffer object target to be retrieved.
182 * \param error the GL error to record if target is illegal.
183 * \return pointer to the buffer object bound to \c target in the
184 * specified context or \c NULL if \c target is invalid.
186 static inline struct gl_buffer_object
*
187 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
190 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
193 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
197 if (!_mesa_is_bufferobj(*bufObj
)) {
198 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
207 * Convert a GLbitfield describing the mapped buffer access flags
208 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
211 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
213 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
214 if ((access
& rwFlags
) == rwFlags
)
215 return GL_READ_WRITE
;
216 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
218 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
219 return GL_WRITE_ONLY
;
221 /* Otherwise, AccessFlags is zero (the default state).
223 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
225 * Name Type Initial Value Legal Values
227 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
230 * However, table 6.8 in the GL_OES_mapbuffer extension says:
232 * Get Value Type Get Command Value Description
233 * --------- ---- ----------- ----- -----------
234 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
236 * The difference is because GL_OES_mapbuffer only supports mapping buffers
241 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
246 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
248 * The regions do not overlap if and only if the end of the given
249 * region is before the mapped region or the start of the given region
250 * is after the mapped region.
252 * \param obj Buffer object target on which to operate.
253 * \param offset Offset of the first byte of the subdata range.
254 * \param size Size, in bytes, of the subdata range.
255 * \return true if ranges overlap, false otherwise
259 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
260 GLintptr offset
, GLsizeiptr size
)
262 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
263 const GLintptr end
= offset
+ size
;
264 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
265 obj
->Mappings
[MAP_USER
].Length
;
267 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
276 * Tests the subdata range parameters and sets the GL error code for
277 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
278 * \c glClearBufferSubData.
280 * \param ctx GL context.
281 * \param bufObj The buffer object.
282 * \param offset Offset of the first byte of the subdata range.
283 * \param size Size, in bytes, of the subdata range.
284 * \param mappedRange If true, checks if an overlapping range is mapped.
285 * If false, checks if buffer is mapped.
286 * \param caller Name of calling function for recording errors.
287 * \return false if error, true otherwise
289 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
292 buffer_object_subdata_range_good(struct gl_context
*ctx
,
293 const struct gl_buffer_object
*bufObj
,
294 GLintptr offset
, GLsizeiptr size
,
295 bool mappedRange
, const char *caller
)
298 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
303 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
307 if (offset
+ size
> bufObj
->Size
) {
308 _mesa_error(ctx
, GL_INVALID_VALUE
,
309 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
310 (unsigned long) offset
,
311 (unsigned long) size
,
312 (unsigned long) bufObj
->Size
);
316 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
320 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
321 _mesa_error(ctx
, GL_INVALID_OPERATION
,
322 "%s(range is mapped without persistent bit)",
328 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
329 _mesa_error(ctx
, GL_INVALID_OPERATION
,
330 "%s(buffer is mapped without persistent bit)",
341 * Test the format and type parameters and set the GL error code for
342 * \c glClearBufferData and \c glClearBufferSubData.
344 * \param ctx GL context.
345 * \param internalformat Format to which the data is to be converted.
346 * \param format Format of the supplied data.
347 * \param type Type of the supplied data.
348 * \param caller Name of calling function for recording errors.
349 * \return If internalformat, format and type are legal the mesa_format
350 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
352 * \sa glClearBufferData and glClearBufferSubData
355 validate_clear_buffer_format(struct gl_context
*ctx
,
356 GLenum internalformat
,
357 GLenum format
, GLenum type
,
360 mesa_format mesaFormat
;
361 GLenum errorFormatType
;
363 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
364 if (mesaFormat
== MESA_FORMAT_NONE
) {
365 _mesa_error(ctx
, GL_INVALID_ENUM
,
366 "%s(invalid internalformat)", caller
);
367 return MESA_FORMAT_NONE
;
370 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
371 * EXT_texture_integer there is no conversion between integer and
372 * non-integer formats
374 if (_mesa_is_enum_format_signed_int(format
) !=
375 _mesa_is_format_integer_color(mesaFormat
)) {
376 _mesa_error(ctx
, GL_INVALID_OPERATION
,
377 "%s(integer vs non-integer)", caller
);
378 return MESA_FORMAT_NONE
;
381 if (!_mesa_is_color_format(format
)) {
382 _mesa_error(ctx
, GL_INVALID_ENUM
,
383 "%s(format is not a color format)", caller
);
384 return MESA_FORMAT_NONE
;
387 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
388 if (errorFormatType
!= GL_NO_ERROR
) {
389 _mesa_error(ctx
, GL_INVALID_ENUM
,
390 "%s(invalid format or type)", caller
);
391 return MESA_FORMAT_NONE
;
399 * Convert user-specified clear value to the specified internal format.
401 * \param ctx GL context.
402 * \param internalformat Format to which the data is converted.
403 * \param clearValue Points to the converted clear value.
404 * \param format Format of the supplied data.
405 * \param type Type of the supplied data.
406 * \param data Data which is to be converted to internalformat.
407 * \param caller Name of calling function for recording errors.
408 * \return true if data could be converted, false otherwise.
410 * \sa glClearBufferData, glClearBufferSubData
413 convert_clear_buffer_data(struct gl_context
*ctx
,
414 mesa_format internalformat
,
415 GLubyte
*clearValue
, GLenum format
, GLenum type
,
416 const GLvoid
*data
, const char *caller
)
418 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
420 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
421 0, &clearValue
, 1, 1, 1,
422 format
, type
, data
, &ctx
->Unpack
)) {
426 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
433 * Allocate and initialize a new buffer object.
435 * Default callback for the \c dd_function_table::NewBufferObject() hook.
437 static struct gl_buffer_object
*
438 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
440 struct gl_buffer_object
*obj
;
444 obj
= MALLOC_STRUCT(gl_buffer_object
);
445 _mesa_initialize_buffer_object(ctx
, obj
, name
);
451 * Delete a buffer object.
453 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
456 _mesa_delete_buffer_object(struct gl_context
*ctx
,
457 struct gl_buffer_object
*bufObj
)
461 _mesa_align_free(bufObj
->Data
);
463 /* assign strange values here to help w/ debugging */
464 bufObj
->RefCount
= -1000;
467 mtx_destroy(&bufObj
->Mutex
);
475 * Set ptr to bufObj w/ reference counting.
476 * This is normally only called from the _mesa_reference_buffer_object() macro
477 * when there's a real pointer change.
480 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
481 struct gl_buffer_object
**ptr
,
482 struct gl_buffer_object
*bufObj
)
485 /* Unreference the old buffer */
486 GLboolean deleteFlag
= GL_FALSE
;
487 struct gl_buffer_object
*oldObj
= *ptr
;
489 mtx_lock(&oldObj
->Mutex
);
490 assert(oldObj
->RefCount
> 0);
492 deleteFlag
= (oldObj
->RefCount
== 0);
493 mtx_unlock(&oldObj
->Mutex
);
496 assert(ctx
->Driver
.DeleteBuffer
);
497 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
505 /* reference new buffer */
506 mtx_lock(&bufObj
->Mutex
);
507 if (bufObj
->RefCount
== 0) {
508 /* this buffer's being deleted (look just above) */
509 /* Not sure this can every really happen. Warn if it does. */
510 _mesa_problem(NULL
, "referencing deleted buffer object");
517 mtx_unlock(&bufObj
->Mutex
);
523 * Initialize a buffer object to default values.
526 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
527 struct gl_buffer_object
*obj
,
530 memset(obj
, 0, sizeof(struct gl_buffer_object
));
531 mtx_init(&obj
->Mutex
, mtx_plain
);
534 obj
->Usage
= GL_STATIC_DRAW_ARB
;
540 * Callback called from _mesa_HashWalk()
543 count_buffer_size(GLuint key
, void *data
, void *userData
)
545 const struct gl_buffer_object
*bufObj
=
546 (const struct gl_buffer_object
*) data
;
547 GLuint
*total
= (GLuint
*) userData
;
550 *total
= *total
+ bufObj
->Size
;
555 * Compute total size (in bytes) of all buffer objects for the given context.
556 * For debugging purposes.
559 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
563 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
570 * Allocate space for and store data in a buffer object. Any data that was
571 * previously stored in the buffer object is lost. If \c data is \c NULL,
572 * memory will be allocated, but no copy will occur.
574 * This is the default callback for \c dd_function_table::BufferData()
575 * Note that all GL error checking will have been done already.
577 * \param ctx GL context.
578 * \param target Buffer object target on which to operate.
579 * \param size Size, in bytes, of the new data store.
580 * \param data Pointer to the data to store in the buffer object. This
581 * pointer may be \c NULL.
582 * \param usage Hints about how the data will be used.
583 * \param bufObj Object to be used.
585 * \return GL_TRUE for success, GL_FALSE for failure
586 * \sa glBufferDataARB, dd_function_table::BufferData.
589 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
590 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
591 struct gl_buffer_object
*bufObj
)
597 _mesa_align_free( bufObj
->Data
);
599 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
601 bufObj
->Data
= (GLubyte
*) new_data
;
603 bufObj
->Usage
= usage
;
604 bufObj
->StorageFlags
= storageFlags
;
607 memcpy( bufObj
->Data
, data
, size
);
619 * Replace data in a subrange of buffer object. If the data range
620 * specified by \c size + \c offset extends beyond the end of the buffer or
621 * if \c data is \c NULL, no copy is performed.
623 * This is the default callback for \c dd_function_table::BufferSubData()
624 * Note that all GL error checking will have been done already.
626 * \param ctx GL context.
627 * \param offset Offset of the first byte to be modified.
628 * \param size Size, in bytes, of the data range.
629 * \param data Pointer to the data to store in the buffer object.
630 * \param bufObj Object to be used.
632 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
635 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
636 GLsizeiptr size
, const GLvoid
*data
,
637 struct gl_buffer_object
*bufObj
)
641 /* this should have been caught in _mesa_BufferSubData() */
642 assert(size
+ offset
<= bufObj
->Size
);
645 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
651 * Retrieve data from a subrange of buffer object. If the data range
652 * specified by \c size + \c offset extends beyond the end of the buffer or
653 * if \c data is \c NULL, no copy is performed.
655 * This is the default callback for \c dd_function_table::GetBufferSubData()
656 * Note that all GL error checking will have been done already.
658 * \param ctx GL context.
659 * \param target Buffer object target on which to operate.
660 * \param offset Offset of the first byte to be fetched.
661 * \param size Size, in bytes, of the data range.
662 * \param data Destination for data
663 * \param bufObj Object to be used.
665 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
668 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
669 GLsizeiptrARB size
, GLvoid
* data
,
670 struct gl_buffer_object
* bufObj
)
674 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
675 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
681 * Clear a subrange of the buffer object with copies of the supplied data.
682 * If data is NULL the buffer is filled with zeros.
684 * This is the default callback for \c dd_function_table::ClearBufferSubData()
685 * Note that all GL error checking will have been done already.
687 * \param ctx GL context.
688 * \param offset Offset of the first byte to be cleared.
689 * \param size Size, in bytes, of the to be cleared range.
690 * \param clearValue Source of the data.
691 * \param clearValueSize Size, in bytes, of the supplied data.
692 * \param bufObj Object to be cleared.
694 * \sa glClearBufferSubData, glClearBufferData and
695 * dd_function_table::ClearBufferSubData.
698 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
699 GLintptr offset
, GLsizeiptr size
,
700 const GLvoid
*clearValue
,
701 GLsizeiptr clearValueSize
,
702 struct gl_buffer_object
*bufObj
)
707 assert(ctx
->Driver
.MapBufferRange
);
708 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
710 GL_MAP_INVALIDATE_RANGE_BIT
,
711 bufObj
, MAP_INTERNAL
);
714 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
718 if (clearValue
== NULL
) {
719 /* Clear with zeros, per the spec */
720 memset(dest
, 0, size
);
721 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
725 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
726 memcpy(dest
, clearValue
, clearValueSize
);
727 dest
+= clearValueSize
;
730 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
735 * Default fallback for \c dd_function_table::MapBufferRange().
736 * Called via glMapBufferRange().
739 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
740 GLsizeiptr length
, GLbitfield access
,
741 struct gl_buffer_object
*bufObj
,
742 gl_map_buffer_index index
)
745 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
746 /* Just return a direct pointer to the data */
747 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
748 bufObj
->Mappings
[index
].Length
= length
;
749 bufObj
->Mappings
[index
].Offset
= offset
;
750 bufObj
->Mappings
[index
].AccessFlags
= access
;
751 return bufObj
->Mappings
[index
].Pointer
;
756 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
757 * Called via glFlushMappedBufferRange().
760 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
761 GLintptr offset
, GLsizeiptr length
,
762 struct gl_buffer_object
*obj
,
763 gl_map_buffer_index index
)
775 * Default callback for \c dd_function_table::UnmapBuffer().
777 * The input parameters will have been already tested for errors.
779 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
782 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
783 gl_map_buffer_index index
)
786 /* XXX we might assert here that bufObj->Pointer is non-null */
787 bufObj
->Mappings
[index
].Pointer
= NULL
;
788 bufObj
->Mappings
[index
].Length
= 0;
789 bufObj
->Mappings
[index
].Offset
= 0;
790 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
796 * Default fallback for \c dd_function_table::CopyBufferSubData().
797 * Called via glCopyBufferSubData().
800 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
801 struct gl_buffer_object
*src
,
802 struct gl_buffer_object
*dst
,
803 GLintptr readOffset
, GLintptr writeOffset
,
806 GLubyte
*srcPtr
, *dstPtr
;
809 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
811 GL_MAP_WRITE_BIT
, src
,
817 srcPtr
+= readOffset
;
818 dstPtr
+= writeOffset
;
820 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
821 GL_MAP_READ_BIT
, src
,
823 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
825 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
829 /* Note: the src and dst regions will never overlap. Trying to do so
830 * would generate GL_INVALID_VALUE earlier.
832 if (srcPtr
&& dstPtr
)
833 memcpy(dstPtr
, srcPtr
, size
);
835 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
837 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
843 * Initialize the state associated with buffer objects
846 _mesa_init_buffer_objects( struct gl_context
*ctx
)
850 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
851 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
852 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
854 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
855 ctx
->Shared
->NullBufferObj
);
857 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
858 ctx
->Shared
->NullBufferObj
);
859 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
860 ctx
->Shared
->NullBufferObj
);
862 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
863 ctx
->Shared
->NullBufferObj
);
865 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
866 ctx
->Shared
->NullBufferObj
);
868 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
869 ctx
->Shared
->NullBufferObj
);
871 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
872 ctx
->Shared
->NullBufferObj
);
874 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
875 ctx
->Shared
->NullBufferObj
);
877 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
878 ctx
->Shared
->NullBufferObj
);
880 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
881 _mesa_reference_buffer_object(ctx
,
882 &ctx
->UniformBufferBindings
[i
].BufferObject
,
883 ctx
->Shared
->NullBufferObj
);
884 ctx
->UniformBufferBindings
[i
].Offset
= -1;
885 ctx
->UniformBufferBindings
[i
].Size
= -1;
888 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
889 _mesa_reference_buffer_object(ctx
,
890 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
891 ctx
->Shared
->NullBufferObj
);
892 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
893 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
896 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
897 _mesa_reference_buffer_object(ctx
,
898 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
899 ctx
->Shared
->NullBufferObj
);
900 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
901 ctx
->AtomicBufferBindings
[i
].Size
= 0;
907 _mesa_free_buffer_objects( struct gl_context
*ctx
)
911 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
913 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
914 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
916 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
918 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
920 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
922 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
924 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
926 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
928 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
929 _mesa_reference_buffer_object(ctx
,
930 &ctx
->UniformBufferBindings
[i
].BufferObject
,
934 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
935 _mesa_reference_buffer_object(ctx
,
936 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
940 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
941 _mesa_reference_buffer_object(ctx
,
942 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
949 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
951 struct gl_buffer_object
**buf_handle
,
954 struct gl_buffer_object
*buf
= *buf_handle
;
956 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
|| _mesa_is_gles31(ctx
))) {
957 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
961 if (!buf
|| buf
== &DummyBufferObject
) {
962 /* If this is a new buffer object id, or one which was generated but
963 * never used before, allocate a buffer object now.
965 assert(ctx
->Driver
.NewBufferObject
);
966 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
968 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
971 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
979 * Bind the specified target to buffer for the specified context.
980 * Called by glBindBuffer() and other functions.
983 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
985 struct gl_buffer_object
*oldBufObj
;
986 struct gl_buffer_object
*newBufObj
= NULL
;
987 struct gl_buffer_object
**bindTarget
= NULL
;
989 bindTarget
= get_buffer_target(ctx
, target
);
991 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
995 /* Get pointer to old buffer object (to be unbound) */
996 oldBufObj
= *bindTarget
;
997 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
998 return; /* rebinding the same buffer object- no change */
1001 * Get pointer to new buffer object (newBufObj)
1004 /* The spec says there's not a buffer object named 0, but we use
1005 * one internally because it simplifies things.
1007 newBufObj
= ctx
->Shared
->NullBufferObj
;
1010 /* non-default buffer object */
1011 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1012 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1013 &newBufObj
, "glBindBuffer"))
1017 /* bind new buffer */
1018 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1023 * Update the default buffer objects in the given context to reference those
1024 * specified in the shared state and release those referencing the old
1028 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1030 /* Bind the NullBufferObj to remove references to those
1031 * in the shared context hash table.
1033 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
1034 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
1035 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
1036 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
1042 * Return the gl_buffer_object for the given ID.
1043 * Always return NULL for ID 0.
1045 struct gl_buffer_object
*
1046 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1051 return (struct gl_buffer_object
*)
1052 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1056 struct gl_buffer_object
*
1057 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1059 return (struct gl_buffer_object
*)
1060 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1064 * A convenience function for direct state access functions that throws
1065 * GL_INVALID_OPERATION if buffer is not the name of an existing
1068 struct gl_buffer_object
*
1069 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1072 struct gl_buffer_object
*bufObj
;
1074 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1075 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1076 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1077 "%s(non-existent buffer object %u)", caller
, buffer
);
1086 _mesa_begin_bufferobj_lookups(struct gl_context
*ctx
)
1088 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1093 _mesa_end_bufferobj_lookups(struct gl_context
*ctx
)
1095 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1100 * Look up a buffer object for a multi-bind function.
1102 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1103 * of generating an error if the buffer ID is not zero or the name
1104 * of an existing buffer object.
1106 * If the buffer ID refers to an existing buffer object, a pointer
1107 * to the buffer object is returned. If the ID is zero, a pointer
1108 * to the shared NullBufferObj is returned. If the ID is not zero
1109 * and does not refer to a valid buffer object, this function
1112 * This function assumes that the caller has already locked the
1113 * hash table mutex by calling _mesa_begin_bufferobj_lookups().
1115 struct gl_buffer_object
*
1116 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1117 const GLuint
*buffers
,
1118 GLuint index
, const char *caller
)
1120 struct gl_buffer_object
*bufObj
;
1122 if (buffers
[index
] != 0) {
1123 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1125 /* The multi-bind functions don't create the buffer objects
1126 when they don't exist. */
1127 if (bufObj
== &DummyBufferObject
)
1130 bufObj
= ctx
->Shared
->NullBufferObj
;
1133 /* The ARB_multi_bind spec says:
1135 * "An INVALID_OPERATION error is generated if any value
1136 * in <buffers> is not zero or the name of an existing
1137 * buffer object (per binding)."
1139 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1140 "%s(buffers[%u]=%u is not zero or the name "
1141 "of an existing buffer object)",
1142 caller
, index
, buffers
[index
]);
1150 * If *ptr points to obj, set ptr = the Null/default buffer object.
1151 * This is a helper for buffer object deletion.
1152 * The GL spec says that deleting a buffer object causes it to get
1153 * unbound from all arrays in the current context.
1156 unbind(struct gl_context
*ctx
,
1157 struct gl_buffer_object
**ptr
,
1158 struct gl_buffer_object
*obj
)
1161 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
1167 * Plug default/fallback buffer object functions into the device
1171 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1173 /* GL_ARB_vertex/pixel_buffer_object */
1174 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1175 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1176 driver
->BufferData
= buffer_data_fallback
;
1177 driver
->BufferSubData
= buffer_sub_data_fallback
;
1178 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
1179 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1181 /* GL_ARB_clear_buffer_object */
1182 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1184 /* GL_ARB_map_buffer_range */
1185 driver
->MapBufferRange
= map_buffer_range_fallback
;
1186 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1188 /* GL_ARB_copy_buffer */
1189 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1194 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1195 struct gl_buffer_object
*bufObj
)
1199 for (i
= 0; i
< MAP_COUNT
; i
++) {
1200 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1201 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1202 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1203 bufObj
->Mappings
[i
].AccessFlags
= 0;
1209 /**********************************************************************/
1211 /**********************************************************************/
1214 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1216 GET_CURRENT_CONTEXT(ctx
);
1218 if (MESA_VERBOSE
& VERBOSE_API
) {
1219 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1220 _mesa_enum_to_string(target
), buffer
);
1223 bind_buffer_object(ctx
, target
, buffer
);
1228 * Delete a set of buffer objects.
1230 * \param n Number of buffer objects to delete.
1231 * \param ids Array of \c n buffer object IDs.
1234 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1236 GET_CURRENT_CONTEXT(ctx
);
1238 FLUSH_VERTICES(ctx
, 0);
1241 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1245 mtx_lock(&ctx
->Shared
->Mutex
);
1247 for (i
= 0; i
< n
; i
++) {
1248 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
1250 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1253 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1255 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1257 /* unbind any vertex pointers bound to this buffer */
1258 for (j
= 0; j
< ARRAY_SIZE(vao
->VertexBinding
); j
++) {
1259 unbind(ctx
, &vao
->VertexBinding
[j
].BufferObj
, bufObj
);
1262 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1263 _mesa_BindBuffer( GL_ARRAY_BUFFER_ARB
, 0 );
1265 if (vao
->IndexBufferObj
== bufObj
) {
1266 _mesa_BindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
1269 /* unbind ARB_draw_indirect binding point */
1270 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1271 _mesa_BindBuffer( GL_DRAW_INDIRECT_BUFFER
, 0 );
1274 /* unbind ARB_indirect_parameters binding point */
1275 if (ctx
->ParameterBuffer
== bufObj
) {
1276 _mesa_BindBuffer(GL_PARAMETER_BUFFER_ARB
, 0);
1279 /* unbind ARB_compute_shader binding point */
1280 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1281 _mesa_BindBuffer(GL_DISPATCH_INDIRECT_BUFFER
, 0);
1284 /* unbind ARB_copy_buffer binding points */
1285 if (ctx
->CopyReadBuffer
== bufObj
) {
1286 _mesa_BindBuffer( GL_COPY_READ_BUFFER
, 0 );
1288 if (ctx
->CopyWriteBuffer
== bufObj
) {
1289 _mesa_BindBuffer( GL_COPY_WRITE_BUFFER
, 0 );
1292 /* unbind transform feedback binding points */
1293 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1294 _mesa_BindBuffer( GL_TRANSFORM_FEEDBACK_BUFFER
, 0 );
1296 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1297 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1298 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1302 /* unbind UBO binding points */
1303 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1304 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1305 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1309 if (ctx
->UniformBuffer
== bufObj
) {
1310 _mesa_BindBuffer( GL_UNIFORM_BUFFER
, 0 );
1313 /* unbind SSBO binding points */
1314 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1315 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1316 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1320 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1321 _mesa_BindBuffer(GL_SHADER_STORAGE_BUFFER
, 0);
1324 /* unbind Atomci Buffer binding points */
1325 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1326 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1327 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1331 if (ctx
->AtomicBuffer
== bufObj
) {
1332 _mesa_BindBuffer( GL_ATOMIC_COUNTER_BUFFER
, 0 );
1335 /* unbind any pixel pack/unpack pointers bound to this buffer */
1336 if (ctx
->Pack
.BufferObj
== bufObj
) {
1337 _mesa_BindBuffer( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
1339 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1340 _mesa_BindBuffer( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
1343 if (ctx
->Texture
.BufferObject
== bufObj
) {
1344 _mesa_BindBuffer( GL_TEXTURE_BUFFER
, 0 );
1347 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1348 _mesa_BindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
, 0);
1351 /* The ID is immediately freed for re-use */
1352 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
1353 /* Make sure we do not run into the classic ABA problem on bind.
1354 * We don't want to allow re-binding a buffer object that's been
1355 * "deleted" by glDeleteBuffers().
1357 * The explicit rebinding to the default object in the current context
1358 * prevents the above in the current context, but another context
1359 * sharing the same objects might suffer from this problem.
1360 * The alternative would be to do the hash lookup in any case on bind
1361 * which would introduce more runtime overhead than this.
1363 bufObj
->DeletePending
= GL_TRUE
;
1364 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1368 mtx_unlock(&ctx
->Shared
->Mutex
);
1373 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1374 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1378 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1380 GET_CURRENT_CONTEXT(ctx
);
1383 struct gl_buffer_object
*buf
;
1385 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1387 if (MESA_VERBOSE
& VERBOSE_API
)
1388 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1391 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1400 * This must be atomic (generation and allocation of buffer object IDs)
1402 mtx_lock(&ctx
->Shared
->Mutex
);
1404 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1406 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1407 * DummyBufferObject. Otherwise, create a new buffer object and insert
1410 for (i
= 0; i
< n
; i
++) {
1411 buffers
[i
] = first
+ i
;
1413 assert(ctx
->Driver
.NewBufferObject
);
1414 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1416 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1417 mtx_unlock(&ctx
->Shared
->Mutex
);
1422 buf
= &DummyBufferObject
;
1424 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1427 mtx_unlock(&ctx
->Shared
->Mutex
);
1431 * Generate a set of unique buffer object IDs and store them in \c buffers.
1433 * \param n Number of IDs to generate.
1434 * \param buffers Array of \c n locations to store the IDs.
1437 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1439 create_buffers(n
, buffers
, false);
1443 * Create a set of buffer objects and store their unique IDs in \c buffers.
1445 * \param n Number of IDs to generate.
1446 * \param buffers Array of \c n locations to store the IDs.
1449 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1451 create_buffers(n
, buffers
, true);
1456 * Determine if ID is the name of a buffer object.
1458 * \param id ID of the potential buffer object.
1459 * \return \c GL_TRUE if \c id is the name of a buffer object,
1460 * \c GL_FALSE otherwise.
1462 GLboolean GLAPIENTRY
1463 _mesa_IsBuffer(GLuint id
)
1465 struct gl_buffer_object
*bufObj
;
1466 GET_CURRENT_CONTEXT(ctx
);
1467 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1469 mtx_lock(&ctx
->Shared
->Mutex
);
1470 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1471 mtx_unlock(&ctx
->Shared
->Mutex
);
1473 return bufObj
&& bufObj
!= &DummyBufferObject
;
1478 _mesa_buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1479 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1480 GLbitfield flags
, const char *func
)
1483 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1487 if (flags
& ~(GL_MAP_READ_BIT
|
1489 GL_MAP_PERSISTENT_BIT
|
1490 GL_MAP_COHERENT_BIT
|
1491 GL_DYNAMIC_STORAGE_BIT
|
1492 GL_CLIENT_STORAGE_BIT
)) {
1493 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1497 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1498 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1499 _mesa_error(ctx
, GL_INVALID_VALUE
,
1500 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1504 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1505 _mesa_error(ctx
, GL_INVALID_VALUE
,
1506 "%s(COHERENT and flags!=PERSISTENT)", func
);
1510 if (bufObj
->Immutable
) {
1511 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1515 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1516 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1518 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1520 bufObj
->Written
= GL_TRUE
;
1521 bufObj
->Immutable
= GL_TRUE
;
1523 assert(ctx
->Driver
.BufferData
);
1524 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1526 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1527 /* Even though the interaction between AMD_pinned_memory and
1528 * glBufferStorage is not described in the spec, Graham Sellers
1529 * said that it should behave the same as glBufferData.
1531 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1534 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1540 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1543 GET_CURRENT_CONTEXT(ctx
);
1544 struct gl_buffer_object
*bufObj
;
1546 bufObj
= get_buffer(ctx
, "glBufferStorage", target
, GL_INVALID_OPERATION
);
1550 _mesa_buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
,
1555 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1558 GET_CURRENT_CONTEXT(ctx
);
1559 struct gl_buffer_object
*bufObj
;
1561 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferStorage");
1566 * In direct state access, buffer objects have an unspecified target since
1567 * they are not required to be bound.
1569 _mesa_buffer_storage(ctx
, bufObj
, GL_NONE
, size
, data
, flags
,
1570 "glNamedBufferStorage");
1575 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1576 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1577 GLenum usage
, const char *func
)
1581 if (MESA_VERBOSE
& VERBOSE_API
) {
1582 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1584 _mesa_enum_to_string(target
),
1585 (long int) size
, data
,
1586 _mesa_enum_to_string(usage
));
1590 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1595 case GL_STREAM_DRAW_ARB
:
1596 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1599 case GL_STATIC_DRAW_ARB
:
1600 case GL_DYNAMIC_DRAW_ARB
:
1604 case GL_STREAM_READ_ARB
:
1605 case GL_STREAM_COPY_ARB
:
1606 case GL_STATIC_READ_ARB
:
1607 case GL_STATIC_COPY_ARB
:
1608 case GL_DYNAMIC_READ_ARB
:
1609 case GL_DYNAMIC_COPY_ARB
:
1610 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1614 valid_usage
= false;
1619 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1620 _mesa_enum_to_string(usage
));
1624 if (bufObj
->Immutable
) {
1625 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1629 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1630 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1632 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1634 bufObj
->Written
= GL_TRUE
;
1637 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1638 bufObj
->Name
, size
, data
, usage
);
1645 assert(ctx
->Driver
.BufferData
);
1646 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1649 GL_DYNAMIC_STORAGE_BIT
,
1651 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1652 /* From GL_AMD_pinned_memory:
1654 * INVALID_OPERATION is generated by BufferData if <target> is
1655 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1656 * mapped to the GPU address space.
1658 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1661 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1667 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1668 const GLvoid
*data
, GLenum usage
)
1670 GET_CURRENT_CONTEXT(ctx
);
1671 struct gl_buffer_object
*bufObj
;
1673 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1677 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1682 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1685 GET_CURRENT_CONTEXT(ctx
);
1686 struct gl_buffer_object
*bufObj
;
1688 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1692 /* In direct state access, buffer objects have an unspecified target since
1693 * they are not required to be bound.
1695 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1696 "glNamedBufferData");
1701 * Implementation for glBufferSubData and glNamedBufferSubData.
1703 * \param ctx GL context.
1704 * \param bufObj The buffer object.
1705 * \param offset Offset of the first byte of the subdata range.
1706 * \param size Size, in bytes, of the subdata range.
1707 * \param data The data store.
1708 * \param func Name of calling function for recording errors.
1712 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1713 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1716 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1718 /* error already recorded */
1722 if (bufObj
->Immutable
&&
1723 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1724 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1731 bufObj
->NumSubDataCalls
++;
1733 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1734 bufObj
->Usage
== GL_STATIC_COPY
) &&
1735 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
) {
1736 /* If the application declared the buffer as static draw/copy or stream
1737 * draw, it should not be frequently modified with glBufferSubData.
1739 BUFFER_USAGE_WARNING(ctx
,
1740 "using %s(buffer %u, offset %u, size %u) to "
1741 "update a %s buffer",
1742 func
, bufObj
->Name
, offset
, size
,
1743 _mesa_enum_to_string(bufObj
->Usage
));
1746 bufObj
->Written
= GL_TRUE
;
1748 assert(ctx
->Driver
.BufferSubData
);
1749 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1753 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1754 GLsizeiptr size
, const GLvoid
*data
)
1756 GET_CURRENT_CONTEXT(ctx
);
1757 struct gl_buffer_object
*bufObj
;
1759 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1763 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1767 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1768 GLsizeiptr size
, const GLvoid
*data
)
1770 GET_CURRENT_CONTEXT(ctx
);
1771 struct gl_buffer_object
*bufObj
;
1773 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1777 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1778 "glNamedBufferSubData");
1783 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1784 GLsizeiptr size
, GLvoid
*data
)
1786 GET_CURRENT_CONTEXT(ctx
);
1787 struct gl_buffer_object
*bufObj
;
1789 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1790 GL_INVALID_OPERATION
);
1794 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1795 "glGetBufferSubData")) {
1799 assert(ctx
->Driver
.GetBufferSubData
);
1800 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1804 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1805 GLsizeiptr size
, GLvoid
*data
)
1807 GET_CURRENT_CONTEXT(ctx
);
1808 struct gl_buffer_object
*bufObj
;
1810 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1811 "glGetNamedBufferSubData");
1815 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1816 "glGetNamedBufferSubData")) {
1820 assert(ctx
->Driver
.GetBufferSubData
);
1821 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1826 * \param subdata true if caller is *SubData, false if *Data
1829 _mesa_clear_buffer_sub_data(struct gl_context
*ctx
,
1830 struct gl_buffer_object
*bufObj
,
1831 GLenum internalformat
,
1832 GLintptr offset
, GLsizeiptr size
,
1833 GLenum format
, GLenum type
,
1835 const char *func
, bool subdata
)
1837 mesa_format mesaFormat
;
1838 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1839 GLsizeiptr clearValueSize
;
1841 /* This checks for disallowed mappings. */
1842 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1847 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1848 format
, type
, func
);
1850 if (mesaFormat
== MESA_FORMAT_NONE
) {
1854 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1855 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1856 _mesa_error(ctx
, GL_INVALID_VALUE
,
1857 "%s(offset or size is not a multiple of "
1858 "internalformat size)", func
);
1863 /* clear to zeros, per the spec */
1865 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1866 NULL
, clearValueSize
, bufObj
);
1871 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1872 format
, type
, data
, func
)) {
1877 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1878 clearValue
, clearValueSize
, bufObj
);
1883 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1884 GLenum type
, const GLvoid
*data
)
1886 GET_CURRENT_CONTEXT(ctx
);
1887 struct gl_buffer_object
*bufObj
;
1889 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1893 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1895 "glClearBufferData", false);
1899 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1900 GLenum format
, GLenum type
, const GLvoid
*data
)
1902 GET_CURRENT_CONTEXT(ctx
);
1903 struct gl_buffer_object
*bufObj
;
1905 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1909 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1911 "glClearNamedBufferData", false);
1916 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1917 GLintptr offset
, GLsizeiptr size
,
1918 GLenum format
, GLenum type
,
1921 GET_CURRENT_CONTEXT(ctx
);
1922 struct gl_buffer_object
*bufObj
;
1924 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
1928 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1930 "glClearBufferSubData", true);
1934 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
1935 GLintptr offset
, GLsizeiptr size
,
1936 GLenum format
, GLenum type
,
1939 GET_CURRENT_CONTEXT(ctx
);
1940 struct gl_buffer_object
*bufObj
;
1942 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1943 "glClearNamedBufferSubData");
1947 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1949 "glClearNamedBufferSubData", true);
1954 _mesa_unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1957 GLboolean status
= GL_TRUE
;
1958 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1960 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
1961 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1962 "%s(buffer is not mapped)", func
);
1967 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1968 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1970 /* check that last 100 bytes are still = magic value */
1971 for (i
= 0; i
< 100; i
++) {
1972 GLuint pos
= bufObj
->Size
- i
- 1;
1973 if (buf
[pos
] != 123) {
1974 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1975 " at position %d (value = %u)\n",
1983 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1984 GLuint i
, unchanged
= 0;
1985 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1987 /* check which bytes changed */
1988 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1989 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1996 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1997 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2002 status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2003 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2004 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2005 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2006 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2011 GLboolean GLAPIENTRY
2012 _mesa_UnmapBuffer(GLenum target
)
2014 GET_CURRENT_CONTEXT(ctx
);
2015 struct gl_buffer_object
*bufObj
;
2017 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2021 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2024 GLboolean GLAPIENTRY
2025 _mesa_UnmapNamedBuffer(GLuint buffer
)
2027 GET_CURRENT_CONTEXT(ctx
);
2028 struct gl_buffer_object
*bufObj
;
2030 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2034 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2039 get_buffer_parameter(struct gl_context
*ctx
,
2040 struct gl_buffer_object
*bufObj
, GLenum pname
,
2041 GLint64
*params
, const char *func
)
2044 case GL_BUFFER_SIZE_ARB
:
2045 *params
= bufObj
->Size
;
2047 case GL_BUFFER_USAGE_ARB
:
2048 *params
= bufObj
->Usage
;
2050 case GL_BUFFER_ACCESS_ARB
:
2051 *params
= simplified_access_mode(ctx
,
2052 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2054 case GL_BUFFER_MAPPED_ARB
:
2055 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2057 case GL_BUFFER_ACCESS_FLAGS
:
2058 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2060 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2062 case GL_BUFFER_MAP_OFFSET
:
2063 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2065 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2067 case GL_BUFFER_MAP_LENGTH
:
2068 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2070 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2072 case GL_BUFFER_IMMUTABLE_STORAGE
:
2073 if (!ctx
->Extensions
.ARB_buffer_storage
)
2075 *params
= bufObj
->Immutable
;
2077 case GL_BUFFER_STORAGE_FLAGS
:
2078 if (!ctx
->Extensions
.ARB_buffer_storage
)
2080 *params
= bufObj
->StorageFlags
;
2089 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2090 _mesa_enum_to_string(pname
));
2095 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2097 GET_CURRENT_CONTEXT(ctx
);
2098 struct gl_buffer_object
*bufObj
;
2101 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2102 GL_INVALID_OPERATION
);
2106 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2107 "glGetBufferParameteriv"))
2108 return; /* Error already recorded. */
2110 *params
= (GLint
) parameter
;
2114 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2116 GET_CURRENT_CONTEXT(ctx
);
2117 struct gl_buffer_object
*bufObj
;
2120 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2121 GL_INVALID_OPERATION
);
2125 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2126 "glGetBufferParameteri64v"))
2127 return; /* Error already recorded. */
2129 *params
= parameter
;
2133 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2135 GET_CURRENT_CONTEXT(ctx
);
2136 struct gl_buffer_object
*bufObj
;
2139 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2140 "glGetNamedBufferParameteriv");
2144 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2145 "glGetNamedBufferParameteriv"))
2146 return; /* Error already recorded. */
2148 *params
= (GLint
) parameter
;
2152 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2155 GET_CURRENT_CONTEXT(ctx
);
2156 struct gl_buffer_object
*bufObj
;
2159 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2160 "glGetNamedBufferParameteri64v");
2164 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2165 "glGetNamedBufferParameteri64v"))
2166 return; /* Error already recorded. */
2168 *params
= parameter
;
2173 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2175 GET_CURRENT_CONTEXT(ctx
);
2176 struct gl_buffer_object
*bufObj
;
2178 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2179 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2180 "GL_BUFFER_MAP_POINTER)");
2184 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2185 GL_INVALID_OPERATION
);
2189 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2193 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2195 GET_CURRENT_CONTEXT(ctx
);
2196 struct gl_buffer_object
*bufObj
;
2198 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2199 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2200 "GL_BUFFER_MAP_POINTER)");
2204 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2205 "glGetNamedBufferPointerv");
2209 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2214 _mesa_copy_buffer_sub_data(struct gl_context
*ctx
,
2215 struct gl_buffer_object
*src
,
2216 struct gl_buffer_object
*dst
,
2217 GLintptr readOffset
, GLintptr writeOffset
,
2218 GLsizeiptr size
, const char *func
)
2220 if (_mesa_check_disallowed_mapping(src
)) {
2221 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2222 "%s(readBuffer is mapped)", func
);
2226 if (_mesa_check_disallowed_mapping(dst
)) {
2227 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2228 "%s(writeBuffer is mapped)", func
);
2232 if (readOffset
< 0) {
2233 _mesa_error(ctx
, GL_INVALID_VALUE
,
2234 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2238 if (writeOffset
< 0) {
2239 _mesa_error(ctx
, GL_INVALID_VALUE
,
2240 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2245 _mesa_error(ctx
, GL_INVALID_VALUE
,
2246 "%s(size %d < 0)", func
, (int) size
);
2250 if (readOffset
+ size
> src
->Size
) {
2251 _mesa_error(ctx
, GL_INVALID_VALUE
,
2252 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2253 (int) readOffset
, (int) size
, (int) src
->Size
);
2257 if (writeOffset
+ size
> dst
->Size
) {
2258 _mesa_error(ctx
, GL_INVALID_VALUE
,
2259 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2260 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2265 if (readOffset
+ size
<= writeOffset
) {
2268 else if (writeOffset
+ size
<= readOffset
) {
2272 /* overlapping src/dst is illegal */
2273 _mesa_error(ctx
, GL_INVALID_VALUE
,
2274 "%s(overlapping src/dst)", func
);
2279 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2283 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2284 GLintptr readOffset
, GLintptr writeOffset
,
2287 GET_CURRENT_CONTEXT(ctx
);
2288 struct gl_buffer_object
*src
, *dst
;
2290 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2291 GL_INVALID_OPERATION
);
2295 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2296 GL_INVALID_OPERATION
);
2300 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2301 "glCopyBufferSubData");
2305 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2306 GLintptr readOffset
, GLintptr writeOffset
,
2309 GET_CURRENT_CONTEXT(ctx
);
2310 struct gl_buffer_object
*src
, *dst
;
2312 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2313 "glCopyNamedBufferSubData");
2317 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2318 "glCopyNamedBufferSubData");
2322 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2323 "glCopyNamedBufferSubData");
2328 _mesa_map_buffer_range(struct gl_context
*ctx
,
2329 struct gl_buffer_object
*bufObj
,
2330 GLintptr offset
, GLsizeiptr length
,
2331 GLbitfield access
, const char *func
)
2334 GLbitfield allowed_access
;
2336 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
2339 _mesa_error(ctx
, GL_INVALID_VALUE
,
2340 "%s(offset %ld < 0)", func
, (long) offset
);
2345 _mesa_error(ctx
, GL_INVALID_VALUE
,
2346 "%s(length %ld < 0)", func
, (long) length
);
2350 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2352 * "An INVALID_OPERATION error is generated for any of the following
2355 * * <length> is zero."
2357 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2358 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2362 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2366 allowed_access
= GL_MAP_READ_BIT
|
2368 GL_MAP_INVALIDATE_RANGE_BIT
|
2369 GL_MAP_INVALIDATE_BUFFER_BIT
|
2370 GL_MAP_FLUSH_EXPLICIT_BIT
|
2371 GL_MAP_UNSYNCHRONIZED_BIT
;
2373 if (ctx
->Extensions
.ARB_buffer_storage
) {
2374 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2375 GL_MAP_COHERENT_BIT
;
2378 if (access
& ~allowed_access
) {
2379 /* generate an error if any bits other than those allowed are set */
2380 _mesa_error(ctx
, GL_INVALID_VALUE
,
2381 "%s(access has undefined bits set)", func
);
2385 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2386 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2387 "%s(access indicates neither read or write)", func
);
2391 if ((access
& GL_MAP_READ_BIT
) &&
2392 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2393 GL_MAP_INVALIDATE_BUFFER_BIT
|
2394 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2395 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2396 "%s(read access with disallowed bits)", func
);
2400 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2401 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2402 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2403 "%s(access has flush explicit without write)", func
);
2407 if (access
& GL_MAP_READ_BIT
&&
2408 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2409 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2410 "%s(buffer does not allow read access)", func
);
2414 if (access
& GL_MAP_WRITE_BIT
&&
2415 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2416 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2417 "%s(buffer does not allow write access)", func
);
2421 if (access
& GL_MAP_COHERENT_BIT
&&
2422 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2423 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2424 "%s(buffer does not allow coherent access)", func
);
2428 if (access
& GL_MAP_PERSISTENT_BIT
&&
2429 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2430 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2431 "%s(buffer does not allow persistent access)", func
);
2435 if (offset
+ length
> bufObj
->Size
) {
2436 _mesa_error(ctx
, GL_INVALID_VALUE
,
2437 "%s(offset %td + length %td > buffer_size %td)", func
,
2438 offset
, length
, bufObj
->Size
);
2442 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2443 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2444 "%s(buffer already mapped)", func
);
2448 if (!bufObj
->Size
) {
2449 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2453 if (access
& GL_MAP_WRITE_BIT
) {
2454 bufObj
->NumMapBufferWriteCalls
++;
2455 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2456 bufObj
->Usage
== GL_STATIC_COPY
) &&
2457 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2458 BUFFER_USAGE_WARNING(ctx
,
2459 "using %s(buffer %u, offset %u, length %u) to "
2460 "update a %s buffer",
2461 func
, bufObj
->Name
, offset
, length
,
2462 _mesa_enum_to_string(bufObj
->Usage
));
2466 assert(ctx
->Driver
.MapBufferRange
);
2467 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2470 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2473 /* The driver callback should have set all these fields.
2474 * This is important because other modules (like VBO) might call
2475 * the driver function directly.
2477 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2478 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2479 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2480 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2483 if (access
& GL_MAP_WRITE_BIT
)
2484 bufObj
->Written
= GL_TRUE
;
2487 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2488 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2489 bufObj
->Name
, bufObj
->Size
, access
);
2490 /* Access must be write only */
2491 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2493 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2494 for (i
= 0; i
< bufObj
->Size
; i
++)
2501 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2502 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2504 /* buffer is 100 bytes larger than requested, fill with magic value */
2505 for (i
= 0; i
< 100; i
++) {
2506 buf
[bufObj
->Size
- i
- 1] = 123;
2515 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2518 GET_CURRENT_CONTEXT(ctx
);
2519 struct gl_buffer_object
*bufObj
;
2521 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2522 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2523 "glMapBufferRange(ARB_map_buffer_range not supported)");
2527 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2531 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2532 "glMapBufferRange");
2536 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2539 GET_CURRENT_CONTEXT(ctx
);
2540 struct gl_buffer_object
*bufObj
;
2542 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2543 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2544 "glMapNamedBufferRange("
2545 "ARB_map_buffer_range not supported)");
2549 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2553 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2554 "glMapNamedBufferRange");
2558 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2559 * flags for input to _mesa_map_buffer_range.
2561 * \return true if the type of requested access is permissible.
2564 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2568 case GL_READ_ONLY_ARB
:
2569 *flags
= GL_MAP_READ_BIT
;
2570 return _mesa_is_desktop_gl(ctx
);
2571 case GL_WRITE_ONLY_ARB
:
2572 *flags
= GL_MAP_WRITE_BIT
;
2574 case GL_READ_WRITE_ARB
:
2575 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2576 return _mesa_is_desktop_gl(ctx
);
2583 _mesa_MapBuffer(GLenum target
, GLenum access
)
2585 GET_CURRENT_CONTEXT(ctx
);
2586 struct gl_buffer_object
*bufObj
;
2587 GLbitfield accessFlags
;
2589 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2590 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2594 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2598 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2603 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2605 GET_CURRENT_CONTEXT(ctx
);
2606 struct gl_buffer_object
*bufObj
;
2607 GLbitfield accessFlags
;
2609 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2610 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2614 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2618 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2619 "glMapNamedBuffer");
2624 _mesa_flush_mapped_buffer_range(struct gl_context
*ctx
,
2625 struct gl_buffer_object
*bufObj
,
2626 GLintptr offset
, GLsizeiptr length
,
2629 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2630 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2631 "%s(ARB_map_buffer_range not supported)", func
);
2636 _mesa_error(ctx
, GL_INVALID_VALUE
,
2637 "%s(offset %ld < 0)", func
, (long) offset
);
2642 _mesa_error(ctx
, GL_INVALID_VALUE
,
2643 "%s(length %ld < 0)", func
, (long) length
);
2647 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2648 /* buffer is not mapped */
2649 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2650 "%s(buffer is not mapped)", func
);
2654 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2655 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2656 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2657 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2661 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2662 _mesa_error(ctx
, GL_INVALID_VALUE
,
2663 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2664 (long) offset
, (long) length
,
2665 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2669 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2671 if (ctx
->Driver
.FlushMappedBufferRange
)
2672 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2677 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2680 GET_CURRENT_CONTEXT(ctx
);
2681 struct gl_buffer_object
*bufObj
;
2683 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2684 GL_INVALID_OPERATION
);
2688 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2689 "glFlushMappedBufferRange");
2693 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2696 GET_CURRENT_CONTEXT(ctx
);
2697 struct gl_buffer_object
*bufObj
;
2699 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2700 "glFlushMappedNamedBufferRange");
2704 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2705 "glFlushMappedNamedBufferRange");
2710 * Binds a buffer object to a uniform buffer binding point.
2712 * The caller is responsible for flushing vertices and updating
2716 set_ubo_binding(struct gl_context
*ctx
,
2717 struct gl_uniform_buffer_binding
*binding
,
2718 struct gl_buffer_object
*bufObj
,
2723 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2725 binding
->Offset
= offset
;
2726 binding
->Size
= size
;
2727 binding
->AutomaticSize
= autoSize
;
2729 /* If this is a real buffer object, mark it has having been used
2730 * at some point as a UBO.
2733 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
2737 * Binds a buffer object to a shader storage buffer binding point.
2739 * The caller is responsible for flushing vertices and updating
2743 set_ssbo_binding(struct gl_context
*ctx
,
2744 struct gl_shader_storage_buffer_binding
*binding
,
2745 struct gl_buffer_object
*bufObj
,
2750 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2752 binding
->Offset
= offset
;
2753 binding
->Size
= size
;
2754 binding
->AutomaticSize
= autoSize
;
2756 /* If this is a real buffer object, mark it has having been used
2757 * at some point as a SSBO.
2760 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
2764 * Binds a buffer object to a uniform buffer binding point.
2766 * Unlike set_ubo_binding(), this function also flushes vertices
2767 * and updates NewDriverState. It also checks if the binding
2768 * has actually changed before updating it.
2771 bind_uniform_buffer(struct gl_context
*ctx
,
2773 struct gl_buffer_object
*bufObj
,
2778 struct gl_uniform_buffer_binding
*binding
=
2779 &ctx
->UniformBufferBindings
[index
];
2781 if (binding
->BufferObject
== bufObj
&&
2782 binding
->Offset
== offset
&&
2783 binding
->Size
== size
&&
2784 binding
->AutomaticSize
== autoSize
) {
2788 FLUSH_VERTICES(ctx
, 0);
2789 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
2791 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2795 * Binds a buffer object to a shader storage buffer binding point.
2797 * Unlike set_ssbo_binding(), this function also flushes vertices
2798 * and updates NewDriverState. It also checks if the binding
2799 * has actually changed before updating it.
2802 bind_shader_storage_buffer(struct gl_context
*ctx
,
2804 struct gl_buffer_object
*bufObj
,
2809 struct gl_shader_storage_buffer_binding
*binding
=
2810 &ctx
->ShaderStorageBufferBindings
[index
];
2812 if (binding
->BufferObject
== bufObj
&&
2813 binding
->Offset
== offset
&&
2814 binding
->Size
== size
&&
2815 binding
->AutomaticSize
== autoSize
) {
2819 FLUSH_VERTICES(ctx
, 0);
2820 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
2822 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2826 * Bind a region of a buffer object to a uniform block binding point.
2827 * \param index the uniform buffer binding point index
2828 * \param bufObj the buffer object
2829 * \param offset offset to the start of buffer object region
2830 * \param size size of the buffer object region
2833 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
2835 struct gl_buffer_object
*bufObj
,
2839 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2840 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2844 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
2845 _mesa_error(ctx
, GL_INVALID_VALUE
,
2846 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2847 ctx
->Const
.UniformBufferOffsetAlignment
);
2851 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2856 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2857 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2861 * Bind a region of a buffer object to a shader storage block binding point.
2862 * \param index the shader storage buffer binding point index
2863 * \param bufObj the buffer object
2864 * \param offset offset to the start of buffer object region
2865 * \param size size of the buffer object region
2868 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
2870 struct gl_buffer_object
*bufObj
,
2874 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
2875 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2879 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
2880 _mesa_error(ctx
, GL_INVALID_VALUE
,
2881 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2882 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
2886 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2891 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
2892 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2896 * Bind a buffer object to a uniform block binding point.
2897 * As above, but offset = 0.
2900 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
2902 struct gl_buffer_object
*bufObj
)
2904 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2905 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2909 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2911 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2912 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2914 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2918 * Bind a buffer object to a shader storage block binding point.
2919 * As above, but offset = 0.
2922 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
2924 struct gl_buffer_object
*bufObj
)
2926 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
2927 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2931 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
2933 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2934 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2936 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2940 * Binds a buffer object to an atomic buffer binding point.
2942 * The caller is responsible for validating the offset,
2943 * flushing the vertices and updating NewDriverState.
2946 set_atomic_buffer_binding(struct gl_context
*ctx
,
2947 struct gl_atomic_buffer_binding
*binding
,
2948 struct gl_buffer_object
*bufObj
,
2952 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2954 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2955 binding
->Offset
= -1;
2958 binding
->Offset
= offset
;
2959 binding
->Size
= size
;
2960 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
2965 * Binds a buffer object to an atomic buffer binding point.
2967 * Unlike set_atomic_buffer_binding(), this function also validates the
2968 * index and offset, flushes vertices, and updates NewDriverState.
2969 * It also checks if the binding has actually changing before
2973 bind_atomic_buffer(struct gl_context
*ctx
,
2975 struct gl_buffer_object
*bufObj
,
2980 struct gl_atomic_buffer_binding
*binding
;
2982 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
2983 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
2987 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
2988 _mesa_error(ctx
, GL_INVALID_VALUE
,
2989 "%s(offset misaligned %d/%d)", name
, (int) offset
,
2990 ATOMIC_COUNTER_SIZE
);
2994 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
2996 binding
= &ctx
->AtomicBufferBindings
[index
];
2997 if (binding
->BufferObject
== bufObj
&&
2998 binding
->Offset
== offset
&&
2999 binding
->Size
== size
) {
3003 FLUSH_VERTICES(ctx
, 0);
3004 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3006 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3010 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3012 const GLintptr
*offsets
,
3013 const GLsizeiptr
*sizes
)
3015 if (offsets
[index
] < 0) {
3016 /* The ARB_multi_bind spec says:
3018 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3019 * value in <offsets> is less than zero (per binding)."
3021 _mesa_error(ctx
, GL_INVALID_VALUE
,
3022 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3023 index
, (int64_t) offsets
[index
]);
3027 if (sizes
[index
] <= 0) {
3028 /* The ARB_multi_bind spec says:
3030 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3031 * value in <sizes> is less than or equal to zero (per binding)."
3033 _mesa_error(ctx
, GL_INVALID_VALUE
,
3034 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3035 index
, (int64_t) sizes
[index
]);
3043 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3044 GLuint first
, GLsizei count
,
3047 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3048 _mesa_error(ctx
, GL_INVALID_ENUM
,
3049 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3053 /* The ARB_multi_bind_spec says:
3055 * "An INVALID_OPERATION error is generated if <first> + <count> is
3056 * greater than the number of target-specific indexed binding points,
3057 * as described in section 6.7.1."
3059 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3060 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3061 "%s(first=%u + count=%d > the value of "
3062 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3063 caller
, first
, count
,
3064 ctx
->Const
.MaxUniformBufferBindings
);
3072 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3073 GLuint first
, GLsizei count
,
3076 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3077 _mesa_error(ctx
, GL_INVALID_ENUM
,
3078 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3082 /* The ARB_multi_bind_spec says:
3084 * "An INVALID_OPERATION error is generated if <first> + <count> is
3085 * greater than the number of target-specific indexed binding points,
3086 * as described in section 6.7.1."
3088 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3089 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3090 "%s(first=%u + count=%d > the value of "
3091 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3092 caller
, first
, count
,
3093 ctx
->Const
.MaxShaderStorageBufferBindings
);
3101 * Unbind all uniform buffers in the range
3102 * <first> through <first>+<count>-1
3105 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3107 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3110 for (i
= 0; i
< count
; i
++)
3111 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3112 bufObj
, -1, -1, GL_TRUE
);
3116 * Unbind all shader storage buffers in the range
3117 * <first> through <first>+<count>-1
3120 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3123 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3126 for (i
= 0; i
< count
; i
++)
3127 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3128 bufObj
, -1, -1, GL_TRUE
);
3132 bind_uniform_buffers_base(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3133 const GLuint
*buffers
)
3137 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, "glBindBuffersBase"))
3140 /* Assume that at least one binding will be changed */
3141 FLUSH_VERTICES(ctx
, 0);
3142 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3145 /* The ARB_multi_bind spec says:
3147 * "If <buffers> is NULL, all bindings from <first> through
3148 * <first>+<count>-1 are reset to their unbound (zero) state."
3150 unbind_uniform_buffers(ctx
, first
, count
);
3154 /* Note that the error semantics for multi-bind commands differ from
3155 * those of other GL commands.
3157 * The Issues section in the ARB_multi_bind spec says:
3159 * "(11) Typically, OpenGL specifies that if an error is generated by a
3160 * command, that command has no effect. This is somewhat
3161 * unfortunate for multi-bind commands, because it would require a
3162 * first pass to scan the entire list of bound objects for errors
3163 * and then a second pass to actually perform the bindings.
3164 * Should we have different error semantics?
3166 * RESOLVED: Yes. In this specification, when the parameters for
3167 * one of the <count> binding points are invalid, that binding point
3168 * is not updated and an error will be generated. However, other
3169 * binding points in the same command will be updated if their
3170 * parameters are valid and no other error occurs."
3173 _mesa_begin_bufferobj_lookups(ctx
);
3175 for (i
= 0; i
< count
; i
++) {
3176 struct gl_uniform_buffer_binding
*binding
=
3177 &ctx
->UniformBufferBindings
[first
+ i
];
3178 struct gl_buffer_object
*bufObj
;
3180 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3181 bufObj
= binding
->BufferObject
;
3183 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3184 "glBindBuffersBase");
3187 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3188 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, GL_TRUE
);
3190 set_ubo_binding(ctx
, binding
, bufObj
, 0, 0, GL_TRUE
);
3194 _mesa_end_bufferobj_lookups(ctx
);
3198 bind_shader_storage_buffers_base(struct gl_context
*ctx
, GLuint first
,
3199 GLsizei count
, const GLuint
*buffers
)
3203 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
,
3204 "glBindBuffersBase"))
3207 /* Assume that at least one binding will be changed */
3208 FLUSH_VERTICES(ctx
, 0);
3209 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3212 /* The ARB_multi_bind spec says:
3214 * "If <buffers> is NULL, all bindings from <first> through
3215 * <first>+<count>-1 are reset to their unbound (zero) state."
3217 unbind_shader_storage_buffers(ctx
, first
, count
);
3221 /* Note that the error semantics for multi-bind commands differ from
3222 * those of other GL commands.
3224 * The Issues section in the ARB_multi_bind spec says:
3226 * "(11) Typically, OpenGL specifies that if an error is generated by a
3227 * command, that command has no effect. This is somewhat
3228 * unfortunate for multi-bind commands, because it would require a
3229 * first pass to scan the entire list of bound objects for errors
3230 * and then a second pass to actually perform the bindings.
3231 * Should we have different error semantics?
3233 * RESOLVED: Yes. In this specification, when the parameters for
3234 * one of the <count> binding points are invalid, that binding point
3235 * is not updated and an error will be generated. However, other
3236 * binding points in the same command will be updated if their
3237 * parameters are valid and no other error occurs."
3240 _mesa_begin_bufferobj_lookups(ctx
);
3242 for (i
= 0; i
< count
; i
++) {
3243 struct gl_shader_storage_buffer_binding
*binding
=
3244 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3245 struct gl_buffer_object
*bufObj
;
3247 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3248 bufObj
= binding
->BufferObject
;
3250 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3251 "glBindBuffersBase");
3254 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3255 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, GL_TRUE
);
3257 set_ssbo_binding(ctx
, binding
, bufObj
, 0, 0, GL_TRUE
);
3261 _mesa_end_bufferobj_lookups(ctx
);
3265 bind_uniform_buffers_range(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3266 const GLuint
*buffers
,
3267 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
3271 if (!error_check_bind_uniform_buffers(ctx
, first
, count
,
3272 "glBindBuffersRange"))
3275 /* Assume that at least one binding will be changed */
3276 FLUSH_VERTICES(ctx
, 0);
3277 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3280 /* The ARB_multi_bind spec says:
3282 * "If <buffers> is NULL, all bindings from <first> through
3283 * <first>+<count>-1 are reset to their unbound (zero) state.
3284 * In this case, the offsets and sizes associated with the
3285 * binding points are set to default values, ignoring
3286 * <offsets> and <sizes>."
3288 unbind_uniform_buffers(ctx
, first
, count
);
3292 /* Note that the error semantics for multi-bind commands differ from
3293 * those of other GL commands.
3295 * The Issues section in the ARB_multi_bind spec says:
3297 * "(11) Typically, OpenGL specifies that if an error is generated by a
3298 * command, that command has no effect. This is somewhat
3299 * unfortunate for multi-bind commands, because it would require a
3300 * first pass to scan the entire list of bound objects for errors
3301 * and then a second pass to actually perform the bindings.
3302 * Should we have different error semantics?
3304 * RESOLVED: Yes. In this specification, when the parameters for
3305 * one of the <count> binding points are invalid, that binding point
3306 * is not updated and an error will be generated. However, other
3307 * binding points in the same command will be updated if their
3308 * parameters are valid and no other error occurs."
3311 _mesa_begin_bufferobj_lookups(ctx
);
3313 for (i
= 0; i
< count
; i
++) {
3314 struct gl_uniform_buffer_binding
*binding
=
3315 &ctx
->UniformBufferBindings
[first
+ i
];
3316 struct gl_buffer_object
*bufObj
;
3318 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3321 /* The ARB_multi_bind spec says:
3323 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3324 * pair of values in <offsets> and <sizes> does not respectively
3325 * satisfy the constraints described for those parameters for the
3326 * specified target, as described in section 6.7.1 (per binding)."
3328 * Section 6.7.1 refers to table 6.5, which says:
3330 * "┌───────────────────────────────────────────────────────────────┐
3331 * │ Uniform buffer array bindings (see sec. 7.6) │
3332 * ├─────────────────────┬─────────────────────────────────────────┤
3334 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3335 * │ │ OFFSET_ALIGNMENT │
3337 * │ size restriction │ none │
3338 * └─────────────────────┴─────────────────────────────────────────┘"
3340 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3341 _mesa_error(ctx
, GL_INVALID_VALUE
,
3342 "glBindBuffersRange(offsets[%u]=%" PRId64
3343 " is misaligned; it must be a multiple of the value of "
3344 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3345 "target=GL_UNIFORM_BUFFER)",
3346 i
, (int64_t) offsets
[i
],
3347 ctx
->Const
.UniformBufferOffsetAlignment
);
3351 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3352 bufObj
= binding
->BufferObject
;
3354 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3355 "glBindBuffersRange");
3358 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3359 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, GL_FALSE
);
3361 set_ubo_binding(ctx
, binding
, bufObj
,
3362 offsets
[i
], sizes
[i
], GL_FALSE
);
3366 _mesa_end_bufferobj_lookups(ctx
);
3370 bind_shader_storage_buffers_range(struct gl_context
*ctx
, GLuint first
,
3371 GLsizei count
, const GLuint
*buffers
,
3372 const GLintptr
*offsets
,
3373 const GLsizeiptr
*sizes
)
3377 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
,
3378 "glBindBuffersRange"))
3381 /* Assume that at least one binding will be changed */
3382 FLUSH_VERTICES(ctx
, 0);
3383 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3386 /* The ARB_multi_bind spec says:
3388 * "If <buffers> is NULL, all bindings from <first> through
3389 * <first>+<count>-1 are reset to their unbound (zero) state.
3390 * In this case, the offsets and sizes associated with the
3391 * binding points are set to default values, ignoring
3392 * <offsets> and <sizes>."
3394 unbind_shader_storage_buffers(ctx
, first
, count
);
3398 /* Note that the error semantics for multi-bind commands differ from
3399 * those of other GL commands.
3401 * The Issues section in the ARB_multi_bind spec says:
3403 * "(11) Typically, OpenGL specifies that if an error is generated by a
3404 * command, that command has no effect. This is somewhat
3405 * unfortunate for multi-bind commands, because it would require a
3406 * first pass to scan the entire list of bound objects for errors
3407 * and then a second pass to actually perform the bindings.
3408 * Should we have different error semantics?
3410 * RESOLVED: Yes. In this specification, when the parameters for
3411 * one of the <count> binding points are invalid, that binding point
3412 * is not updated and an error will be generated. However, other
3413 * binding points in the same command will be updated if their
3414 * parameters are valid and no other error occurs."
3417 _mesa_begin_bufferobj_lookups(ctx
);
3419 for (i
= 0; i
< count
; i
++) {
3420 struct gl_shader_storage_buffer_binding
*binding
=
3421 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3422 struct gl_buffer_object
*bufObj
;
3424 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3427 /* The ARB_multi_bind spec says:
3429 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3430 * pair of values in <offsets> and <sizes> does not respectively
3431 * satisfy the constraints described for those parameters for the
3432 * specified target, as described in section 6.7.1 (per binding)."
3434 * Section 6.7.1 refers to table 6.5, which says:
3436 * "┌───────────────────────────────────────────────────────────────┐
3437 * │ Shader storage buffer array bindings (see sec. 7.8) │
3438 * ├─────────────────────┬─────────────────────────────────────────┤
3440 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3441 * │ │ BUFFER_OFFSET_ALIGNMENT │
3443 * │ size restriction │ none │
3444 * └─────────────────────┴─────────────────────────────────────────┘"
3446 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3447 _mesa_error(ctx
, GL_INVALID_VALUE
,
3448 "glBindBuffersRange(offsets[%u]=%" PRId64
3449 " is misaligned; it must be a multiple of the value of "
3450 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3451 "target=GL_SHADER_STORAGE_BUFFER)",
3452 i
, (int64_t) offsets
[i
],
3453 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3457 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3458 bufObj
= binding
->BufferObject
;
3460 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3461 "glBindBuffersRange");
3464 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3465 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, GL_FALSE
);
3467 set_ssbo_binding(ctx
, binding
, bufObj
,
3468 offsets
[i
], sizes
[i
], GL_FALSE
);
3472 _mesa_end_bufferobj_lookups(ctx
);
3476 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3477 struct gl_transform_feedback_object
*tfObj
,
3478 GLuint first
, GLsizei count
, const char *caller
)
3480 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3481 _mesa_error(ctx
, GL_INVALID_ENUM
,
3482 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3486 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3488 * "An INVALID_OPERATION error is generated :
3491 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3492 * FEEDBACK_BUFFER and transform feedback is currently active."
3494 * We assume that this is also meant to apply to BindBuffersRange
3495 * and BindBuffersBase.
3497 if (tfObj
->Active
) {
3498 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3499 "%s(Changing transform feedback buffers while "
3500 "transform feedback is active)", caller
);
3504 /* The ARB_multi_bind_spec says:
3506 * "An INVALID_OPERATION error is generated if <first> + <count> is
3507 * greater than the number of target-specific indexed binding points,
3508 * as described in section 6.7.1."
3510 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3511 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3512 "%s(first=%u + count=%d > the value of "
3513 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3514 caller
, first
, count
,
3515 ctx
->Const
.MaxTransformFeedbackBuffers
);
3523 * Unbind all transform feedback buffers in the range
3524 * <first> through <first>+<count>-1
3527 unbind_xfb_buffers(struct gl_context
*ctx
,
3528 struct gl_transform_feedback_object
*tfObj
,
3529 GLuint first
, GLsizei count
)
3531 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3534 for (i
= 0; i
< count
; i
++)
3535 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3540 bind_xfb_buffers(struct gl_context
*ctx
,
3541 GLuint first
, GLsizei count
,
3542 const GLuint
*buffers
,
3544 const GLintptr
*offsets
,
3545 const GLsizeiptr
*sizes
,
3548 struct gl_transform_feedback_object
*tfObj
=
3549 ctx
->TransformFeedback
.CurrentObject
;
3552 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3555 /* Assume that at least one binding will be changed */
3556 FLUSH_VERTICES(ctx
, 0);
3557 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3560 /* The ARB_multi_bind spec says:
3562 * "If <buffers> is NULL, all bindings from <first> through
3563 * <first>+<count>-1 are reset to their unbound (zero) state.
3564 * In this case, the offsets and sizes associated with the
3565 * binding points are set to default values, ignoring
3566 * <offsets> and <sizes>."
3568 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3572 /* Note that the error semantics for multi-bind commands differ from
3573 * those of other GL commands.
3575 * The Issues section in the ARB_multi_bind spec says:
3577 * "(11) Typically, OpenGL specifies that if an error is generated by a
3578 * command, that command has no effect. This is somewhat
3579 * unfortunate for multi-bind commands, because it would require a
3580 * first pass to scan the entire list of bound objects for errors
3581 * and then a second pass to actually perform the bindings.
3582 * Should we have different error semantics?
3584 * RESOLVED: Yes. In this specification, when the parameters for
3585 * one of the <count> binding points are invalid, that binding point
3586 * is not updated and an error will be generated. However, other
3587 * binding points in the same command will be updated if their
3588 * parameters are valid and no other error occurs."
3591 _mesa_begin_bufferobj_lookups(ctx
);
3593 for (i
= 0; i
< count
; i
++) {
3594 const GLuint index
= first
+ i
;
3595 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3596 struct gl_buffer_object
*bufObj
;
3597 GLintptr offset
= 0;
3598 GLsizeiptr size
= 0;
3601 offset
= offsets
[i
];
3604 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3607 /* The ARB_multi_bind spec says:
3609 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3610 * pair of values in <offsets> and <sizes> does not respectively
3611 * satisfy the constraints described for those parameters for the
3612 * specified target, as described in section 6.7.1 (per binding)."
3614 * Section 6.7.1 refers to table 6.5, which says:
3616 * "┌───────────────────────────────────────────────────────────────┐
3617 * │ Transform feedback array bindings (see sec. 13.2.2) │
3618 * ├───────────────────────┬───────────────────────────────────────┤
3620 * │ offset restriction │ multiple of 4 │
3622 * │ size restriction │ multiple of 4 │
3623 * └───────────────────────┴───────────────────────────────────────┘"
3625 if (offsets
[i
] & 0x3) {
3626 _mesa_error(ctx
, GL_INVALID_VALUE
,
3627 "glBindBuffersRange(offsets[%u]=%" PRId64
3628 " is misaligned; it must be a multiple of 4 when "
3629 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3630 i
, (int64_t) offsets
[i
]);
3634 if (sizes
[i
] & 0x3) {
3635 _mesa_error(ctx
, GL_INVALID_VALUE
,
3636 "glBindBuffersRange(sizes[%u]=%" PRId64
3637 " is misaligned; it must be a multiple of 4 when "
3638 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3639 i
, (int64_t) sizes
[i
]);
3643 offset
= offsets
[i
];
3647 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3648 bufObj
= boundBufObj
;
3650 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3653 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3657 _mesa_end_bufferobj_lookups(ctx
);
3661 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3662 GLuint first
, GLsizei count
,
3665 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3666 _mesa_error(ctx
, GL_INVALID_ENUM
,
3667 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3671 /* The ARB_multi_bind_spec says:
3673 * "An INVALID_OPERATION error is generated if <first> + <count> is
3674 * greater than the number of target-specific indexed binding points,
3675 * as described in section 6.7.1."
3677 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3678 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3679 "%s(first=%u + count=%d > the value of "
3680 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3681 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3689 * Unbind all atomic counter buffers in the range
3690 * <first> through <first>+<count>-1
3693 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3695 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3698 for (i
= 0; i
< count
; i
++)
3699 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3704 bind_atomic_buffers_base(struct gl_context
*ctx
,
3707 const GLuint
*buffers
)
3711 if (!error_check_bind_atomic_buffers(ctx
, first
, count
,
3712 "glBindBuffersBase"))
3715 /* Assume that at least one binding will be changed */
3716 FLUSH_VERTICES(ctx
, 0);
3717 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3720 /* The ARB_multi_bind spec says:
3722 * "If <buffers> is NULL, all bindings from <first> through
3723 * <first>+<count>-1 are reset to their unbound (zero) state."
3725 unbind_atomic_buffers(ctx
, first
, count
);
3729 /* Note that the error semantics for multi-bind commands differ from
3730 * those of other GL commands.
3732 * The Issues section in the ARB_multi_bind spec says:
3734 * "(11) Typically, OpenGL specifies that if an error is generated by a
3735 * command, that command has no effect. This is somewhat
3736 * unfortunate for multi-bind commands, because it would require a
3737 * first pass to scan the entire list of bound objects for errors
3738 * and then a second pass to actually perform the bindings.
3739 * Should we have different error semantics?
3741 * RESOLVED: Yes. In this specification, when the parameters for
3742 * one of the <count> binding points are invalid, that binding point
3743 * is not updated and an error will be generated. However, other
3744 * binding points in the same command will be updated if their
3745 * parameters are valid and no other error occurs."
3748 _mesa_begin_bufferobj_lookups(ctx
);
3750 for (i
= 0; i
< count
; i
++) {
3751 struct gl_atomic_buffer_binding
*binding
=
3752 &ctx
->AtomicBufferBindings
[first
+ i
];
3753 struct gl_buffer_object
*bufObj
;
3755 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3756 bufObj
= binding
->BufferObject
;
3758 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3759 "glBindBuffersBase");
3762 set_atomic_buffer_binding(ctx
, binding
, bufObj
, 0, 0);
3765 _mesa_end_bufferobj_lookups(ctx
);
3769 bind_atomic_buffers_range(struct gl_context
*ctx
,
3772 const GLuint
*buffers
,
3773 const GLintptr
*offsets
,
3774 const GLsizeiptr
*sizes
)
3778 if (!error_check_bind_atomic_buffers(ctx
, first
, count
,
3779 "glBindBuffersRange"))
3782 /* Assume that at least one binding will be changed */
3783 FLUSH_VERTICES(ctx
, 0);
3784 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3787 /* The ARB_multi_bind spec says:
3789 * "If <buffers> is NULL, all bindings from <first> through
3790 * <first>+<count>-1 are reset to their unbound (zero) state.
3791 * In this case, the offsets and sizes associated with the
3792 * binding points are set to default values, ignoring
3793 * <offsets> and <sizes>."
3795 unbind_atomic_buffers(ctx
, first
, count
);
3799 /* Note that the error semantics for multi-bind commands differ from
3800 * those of other GL commands.
3802 * The Issues section in the ARB_multi_bind spec says:
3804 * "(11) Typically, OpenGL specifies that if an error is generated by a
3805 * command, that command has no effect. This is somewhat
3806 * unfortunate for multi-bind commands, because it would require a
3807 * first pass to scan the entire list of bound objects for errors
3808 * and then a second pass to actually perform the bindings.
3809 * Should we have different error semantics?
3811 * RESOLVED: Yes. In this specification, when the parameters for
3812 * one of the <count> binding points are invalid, that binding point
3813 * is not updated and an error will be generated. However, other
3814 * binding points in the same command will be updated if their
3815 * parameters are valid and no other error occurs."
3818 _mesa_begin_bufferobj_lookups(ctx
);
3820 for (i
= 0; i
< count
; i
++) {
3821 struct gl_atomic_buffer_binding
*binding
=
3822 &ctx
->AtomicBufferBindings
[first
+ i
];
3823 struct gl_buffer_object
*bufObj
;
3825 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3828 /* The ARB_multi_bind spec says:
3830 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3831 * pair of values in <offsets> and <sizes> does not respectively
3832 * satisfy the constraints described for those parameters for the
3833 * specified target, as described in section 6.7.1 (per binding)."
3835 * Section 6.7.1 refers to table 6.5, which says:
3837 * "┌───────────────────────────────────────────────────────────────┐
3838 * │ Atomic counter array bindings (see sec. 7.7.2) │
3839 * ├───────────────────────┬───────────────────────────────────────┤
3841 * │ offset restriction │ multiple of 4 │
3843 * │ size restriction │ none │
3844 * └───────────────────────┴───────────────────────────────────────┘"
3846 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3847 _mesa_error(ctx
, GL_INVALID_VALUE
,
3848 "glBindBuffersRange(offsets[%u]=%" PRId64
3849 " is misaligned; it must be a multiple of %d when "
3850 "target=GL_ATOMIC_COUNTER_BUFFER)",
3851 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3855 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3856 bufObj
= binding
->BufferObject
;
3858 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3859 "glBindBuffersRange");
3862 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offsets
[i
], sizes
[i
]);
3865 _mesa_end_bufferobj_lookups(ctx
);
3869 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3870 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3872 GET_CURRENT_CONTEXT(ctx
);
3873 struct gl_buffer_object
*bufObj
;
3875 if (MESA_VERBOSE
& VERBOSE_API
) {
3876 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %ld, %ld)\n",
3877 _mesa_enum_to_string(target
), index
, buffer
, offset
, size
);
3881 bufObj
= ctx
->Shared
->NullBufferObj
;
3883 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3885 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3886 &bufObj
, "glBindBufferRange"))
3890 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3891 "glBindBufferRange(invalid buffer=%u)", buffer
);
3897 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3904 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3905 _mesa_bind_buffer_range_transform_feedback(ctx
,
3906 ctx
->TransformFeedback
.CurrentObject
,
3907 index
, bufObj
, offset
, size
,
3910 case GL_UNIFORM_BUFFER
:
3911 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3913 case GL_SHADER_STORAGE_BUFFER
:
3914 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3916 case GL_ATOMIC_COUNTER_BUFFER
:
3917 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3918 "glBindBufferRange");
3921 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
3927 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
3929 GET_CURRENT_CONTEXT(ctx
);
3930 struct gl_buffer_object
*bufObj
;
3932 if (MESA_VERBOSE
& VERBOSE_API
) {
3933 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
3934 _mesa_enum_to_string(target
), index
, buffer
);
3938 bufObj
= ctx
->Shared
->NullBufferObj
;
3940 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3942 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3943 &bufObj
, "glBindBufferBase"))
3947 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3948 "glBindBufferBase(invalid buffer=%u)", buffer
);
3952 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
3953 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
3955 * "BindBufferBase is equivalent to calling BindBufferRange with offset
3956 * zero and size equal to the size of buffer."
3958 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
3960 * "If the parameter (starting offset or size) was not specified when the
3961 * buffer object was bound, zero is returned."
3963 * What happens if the size of the buffer changes? Does the size of the
3964 * buffer at the moment glBindBufferBase was called still play a role, like
3965 * the first quote would imply, or is the size meaningless in the
3966 * glBindBufferBase case like the second quote would suggest? The GL 4.1
3967 * core spec page 45 says:
3969 * "It is equivalent to calling BindBufferRange with offset zero, while
3970 * size is determined by the size of the bound buffer at the time the
3973 * My interpretation is that the GL 4.1 spec was a clarification of the
3974 * behavior, not a change. In particular, this choice will only make
3975 * rendering work in cases where it would have had undefined results.
3979 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3980 _mesa_bind_buffer_base_transform_feedback(ctx
,
3981 ctx
->TransformFeedback
.CurrentObject
,
3982 index
, bufObj
, false);
3984 case GL_UNIFORM_BUFFER
:
3985 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
3987 case GL_SHADER_STORAGE_BUFFER
:
3988 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
3990 case GL_ATOMIC_COUNTER_BUFFER
:
3991 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
3992 "glBindBufferBase");
3995 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4001 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4002 const GLuint
*buffers
,
4003 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4005 GET_CURRENT_CONTEXT(ctx
);
4007 if (MESA_VERBOSE
& VERBOSE_API
) {
4008 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4009 _mesa_enum_to_string(target
), first
, count
,
4010 buffers
, offsets
, sizes
);
4014 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4015 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4016 "glBindBuffersRange");
4018 case GL_UNIFORM_BUFFER
:
4019 bind_uniform_buffers_range(ctx
, first
, count
, buffers
, offsets
, sizes
);
4021 case GL_SHADER_STORAGE_BUFFER
:
4022 bind_shader_storage_buffers_range(ctx
, first
, count
, buffers
, offsets
,
4025 case GL_ATOMIC_COUNTER_BUFFER
:
4026 bind_atomic_buffers_range(ctx
, first
, count
, buffers
,
4030 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4031 _mesa_enum_to_string(target
));
4037 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4038 const GLuint
*buffers
)
4040 GET_CURRENT_CONTEXT(ctx
);
4042 if (MESA_VERBOSE
& VERBOSE_API
) {
4043 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4044 _mesa_enum_to_string(target
), first
, count
, buffers
);
4048 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4049 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4050 "glBindBuffersBase");
4052 case GL_UNIFORM_BUFFER
:
4053 bind_uniform_buffers_base(ctx
, first
, count
, buffers
);
4055 case GL_SHADER_STORAGE_BUFFER
:
4056 bind_shader_storage_buffers_base(ctx
, first
, count
, buffers
);
4058 case GL_ATOMIC_COUNTER_BUFFER
:
4059 bind_atomic_buffers_base(ctx
, first
, count
, buffers
);
4062 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4063 _mesa_enum_to_string(target
));
4069 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4072 GET_CURRENT_CONTEXT(ctx
);
4073 struct gl_buffer_object
*bufObj
;
4074 const GLintptr end
= offset
+ length
;
4076 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4078 _mesa_error(ctx
, GL_INVALID_VALUE
,
4079 "glInvalidateBufferSubData(name = 0x%x) invalid object",
4084 /* The GL_ARB_invalidate_subdata spec says:
4086 * "An INVALID_VALUE error is generated if <offset> or <length> is
4087 * negative, or if <offset> + <length> is greater than the value of
4090 if (end
< 0 || end
> bufObj
->Size
) {
4091 _mesa_error(ctx
, GL_INVALID_VALUE
,
4092 "glInvalidateBufferSubData(invalid offset or length)");
4096 /* The OpenGL 4.4 (Core Profile) spec says:
4098 * "An INVALID_OPERATION error is generated if buffer is currently
4099 * mapped by MapBuffer or if the invalidate range intersects the range
4100 * currently mapped by MapBufferRange, unless it was mapped
4101 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4103 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4104 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4105 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4106 "glInvalidateBufferSubData(intersection with mapped "
4111 /* We don't actually do anything for this yet. Just return after
4112 * validating the parameters and generating the required errors.
4118 _mesa_InvalidateBufferData(GLuint buffer
)
4120 GET_CURRENT_CONTEXT(ctx
);
4121 struct gl_buffer_object
*bufObj
;
4123 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4125 _mesa_error(ctx
, GL_INVALID_VALUE
,
4126 "glInvalidateBufferData(name = 0x%x) invalid object",
4131 /* The OpenGL 4.4 (Core Profile) spec says:
4133 * "An INVALID_OPERATION error is generated if buffer is currently
4134 * mapped by MapBuffer or if the invalidate range intersects the range
4135 * currently mapped by MapBufferRange, unless it was mapped
4136 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4138 if (_mesa_check_disallowed_mapping(bufObj
)) {
4139 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4140 "glInvalidateBufferData(intersection with mapped "
4145 /* We don't actually do anything for this yet. Just return after
4146 * validating the parameters and generating the required errors.