2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
34 #include <inttypes.h> /* for PRId64 macro */
35 #include "util/debug.h"
41 #include "bufferobj.h"
44 #include "glformats.h"
46 #include "transformfeedback.h"
52 /*#define BOUNDS_CHECK*/
56 * We count the number of buffer modification calls to check for
57 * inefficient buffer use. This is the number of such calls before we
60 #define BUFFER_WARNING_CALL_COUNT 4
64 * Helper to warn of possible performance issues, such as frequently
65 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
69 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
74 _mesa_gl_vdebug(ctx
, id
,
75 MESA_DEBUG_SOURCE_API
,
76 MESA_DEBUG_TYPE_PERFORMANCE
,
77 MESA_DEBUG_SEVERITY_MEDIUM
,
82 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
84 static GLuint id = 0; \
85 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
90 * Used as a placeholder for buffer objects between glGenBuffers() and
91 * glBindBuffer() so that glIsBuffer() can work correctly.
93 static struct gl_buffer_object DummyBufferObject
;
97 * Return pointer to address of a buffer object target.
98 * \param ctx the GL context
99 * \param target the buffer object target to be retrieved.
100 * \return pointer to pointer to the buffer object bound to \c target in the
101 * specified context or \c NULL if \c target is invalid.
103 static inline struct gl_buffer_object
**
104 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
106 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
108 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
109 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
113 case GL_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.ArrayBufferObj
;
115 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
116 return &ctx
->Array
.VAO
->IndexBufferObj
;
117 case GL_PIXEL_PACK_BUFFER_EXT
:
118 return &ctx
->Pack
.BufferObj
;
119 case GL_PIXEL_UNPACK_BUFFER_EXT
:
120 return &ctx
->Unpack
.BufferObj
;
121 case GL_COPY_READ_BUFFER
:
122 return &ctx
->CopyReadBuffer
;
123 case GL_COPY_WRITE_BUFFER
:
124 return &ctx
->CopyWriteBuffer
;
125 case GL_QUERY_BUFFER
:
126 if (_mesa_has_ARB_query_buffer_object(ctx
))
127 return &ctx
->QueryBuffer
;
129 case GL_DRAW_INDIRECT_BUFFER
:
130 if ((ctx
->API
== API_OPENGL_CORE
&&
131 ctx
->Extensions
.ARB_draw_indirect
) ||
132 _mesa_is_gles31(ctx
)) {
133 return &ctx
->DrawIndirectBuffer
;
136 case GL_PARAMETER_BUFFER_ARB
:
137 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
138 return &ctx
->ParameterBuffer
;
141 case GL_DISPATCH_INDIRECT_BUFFER
:
142 if (_mesa_has_compute_shaders(ctx
)) {
143 return &ctx
->DispatchIndirectBuffer
;
146 case GL_TRANSFORM_FEEDBACK_BUFFER
:
147 if (ctx
->Extensions
.EXT_transform_feedback
) {
148 return &ctx
->TransformFeedback
.CurrentBuffer
;
151 case GL_TEXTURE_BUFFER
:
152 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
153 _mesa_has_OES_texture_buffer(ctx
)) {
154 return &ctx
->Texture
.BufferObject
;
157 case GL_UNIFORM_BUFFER
:
158 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
159 return &ctx
->UniformBuffer
;
162 case GL_SHADER_STORAGE_BUFFER
:
163 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
164 return &ctx
->ShaderStorageBuffer
;
167 case GL_ATOMIC_COUNTER_BUFFER
:
168 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
169 return &ctx
->AtomicBuffer
;
172 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
173 if (ctx
->Extensions
.AMD_pinned_memory
) {
174 return &ctx
->ExternalVirtualMemoryBuffer
;
185 * Get the buffer object bound to the specified target in a GL context.
186 * \param ctx the GL context
187 * \param target the buffer object target to be retrieved.
188 * \param error the GL error to record if target is illegal.
189 * \return pointer to the buffer object bound to \c target in the
190 * specified context or \c NULL if \c target is invalid.
192 static inline struct gl_buffer_object
*
193 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
196 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
199 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
203 if (!_mesa_is_bufferobj(*bufObj
)) {
204 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
213 * Convert a GLbitfield describing the mapped buffer access flags
214 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
217 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
219 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
220 if ((access
& rwFlags
) == rwFlags
)
221 return GL_READ_WRITE
;
222 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
224 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
225 return GL_WRITE_ONLY
;
227 /* Otherwise, AccessFlags is zero (the default state).
229 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
231 * Name Type Initial Value Legal Values
233 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
236 * However, table 6.8 in the GL_OES_mapbuffer extension says:
238 * Get Value Type Get Command Value Description
239 * --------- ---- ----------- ----- -----------
240 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
242 * The difference is because GL_OES_mapbuffer only supports mapping buffers
247 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
252 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
254 * The regions do not overlap if and only if the end of the given
255 * region is before the mapped region or the start of the given region
256 * is after the mapped region.
258 * \param obj Buffer object target on which to operate.
259 * \param offset Offset of the first byte of the subdata range.
260 * \param size Size, in bytes, of the subdata range.
261 * \return true if ranges overlap, false otherwise
265 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
266 GLintptr offset
, GLsizeiptr size
)
268 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
269 const GLintptr end
= offset
+ size
;
270 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
271 obj
->Mappings
[MAP_USER
].Length
;
273 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
282 * Tests the subdata range parameters and sets the GL error code for
283 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
284 * \c glClearBufferSubData.
286 * \param ctx GL context.
287 * \param bufObj The buffer object.
288 * \param offset Offset of the first byte of the subdata range.
289 * \param size Size, in bytes, of the subdata range.
290 * \param mappedRange If true, checks if an overlapping range is mapped.
291 * If false, checks if buffer is mapped.
292 * \param caller Name of calling function for recording errors.
293 * \return false if error, true otherwise
295 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
298 buffer_object_subdata_range_good(struct gl_context
*ctx
,
299 const struct gl_buffer_object
*bufObj
,
300 GLintptr offset
, GLsizeiptr size
,
301 bool mappedRange
, const char *caller
)
304 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
309 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
313 if (offset
+ size
> bufObj
->Size
) {
314 _mesa_error(ctx
, GL_INVALID_VALUE
,
315 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
316 (unsigned long) offset
,
317 (unsigned long) size
,
318 (unsigned long) bufObj
->Size
);
322 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
326 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
328 "%s(range is mapped without persistent bit)",
334 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(buffer is mapped without persistent bit)",
347 * Test the format and type parameters and set the GL error code for
348 * \c glClearBufferData and \c glClearBufferSubData.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is to be converted.
352 * \param format Format of the supplied data.
353 * \param type Type of the supplied data.
354 * \param caller Name of calling function for recording errors.
355 * \return If internalformat, format and type are legal the mesa_format
356 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
358 * \sa glClearBufferData and glClearBufferSubData
361 validate_clear_buffer_format(struct gl_context
*ctx
,
362 GLenum internalformat
,
363 GLenum format
, GLenum type
,
366 mesa_format mesaFormat
;
367 GLenum errorFormatType
;
369 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
370 if (mesaFormat
== MESA_FORMAT_NONE
) {
371 _mesa_error(ctx
, GL_INVALID_ENUM
,
372 "%s(invalid internalformat)", caller
);
373 return MESA_FORMAT_NONE
;
376 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
377 * EXT_texture_integer there is no conversion between integer and
378 * non-integer formats
380 if (_mesa_is_enum_format_signed_int(format
) !=
381 _mesa_is_format_integer_color(mesaFormat
)) {
382 _mesa_error(ctx
, GL_INVALID_OPERATION
,
383 "%s(integer vs non-integer)", caller
);
384 return MESA_FORMAT_NONE
;
387 if (!_mesa_is_color_format(format
)) {
388 _mesa_error(ctx
, GL_INVALID_ENUM
,
389 "%s(format is not a color format)", caller
);
390 return MESA_FORMAT_NONE
;
393 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
394 if (errorFormatType
!= GL_NO_ERROR
) {
395 _mesa_error(ctx
, GL_INVALID_ENUM
,
396 "%s(invalid format or type)", caller
);
397 return MESA_FORMAT_NONE
;
405 * Convert user-specified clear value to the specified internal format.
407 * \param ctx GL context.
408 * \param internalformat Format to which the data is converted.
409 * \param clearValue Points to the converted clear value.
410 * \param format Format of the supplied data.
411 * \param type Type of the supplied data.
412 * \param data Data which is to be converted to internalformat.
413 * \param caller Name of calling function for recording errors.
414 * \return true if data could be converted, false otherwise.
416 * \sa glClearBufferData, glClearBufferSubData
419 convert_clear_buffer_data(struct gl_context
*ctx
,
420 mesa_format internalformat
,
421 GLubyte
*clearValue
, GLenum format
, GLenum type
,
422 const GLvoid
*data
, const char *caller
)
424 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
426 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
427 0, &clearValue
, 1, 1, 1,
428 format
, type
, data
, &ctx
->Unpack
)) {
432 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
439 * Allocate and initialize a new buffer object.
441 * Default callback for the \c dd_function_table::NewBufferObject() hook.
443 static struct gl_buffer_object
*
444 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
446 struct gl_buffer_object
*obj
;
450 obj
= MALLOC_STRUCT(gl_buffer_object
);
451 _mesa_initialize_buffer_object(ctx
, obj
, name
);
457 * Delete a buffer object.
459 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
462 _mesa_delete_buffer_object(struct gl_context
*ctx
,
463 struct gl_buffer_object
*bufObj
)
467 vbo_delete_minmax_cache(bufObj
);
468 _mesa_align_free(bufObj
->Data
);
470 /* assign strange values here to help w/ debugging */
471 bufObj
->RefCount
= -1000;
474 mtx_destroy(&bufObj
->Mutex
);
482 * Set ptr to bufObj w/ reference counting.
483 * This is normally only called from the _mesa_reference_buffer_object() macro
484 * when there's a real pointer change.
487 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
488 struct gl_buffer_object
**ptr
,
489 struct gl_buffer_object
*bufObj
)
492 /* Unreference the old buffer */
493 GLboolean deleteFlag
= GL_FALSE
;
494 struct gl_buffer_object
*oldObj
= *ptr
;
496 mtx_lock(&oldObj
->Mutex
);
497 assert(oldObj
->RefCount
> 0);
499 deleteFlag
= (oldObj
->RefCount
== 0);
500 mtx_unlock(&oldObj
->Mutex
);
503 assert(ctx
->Driver
.DeleteBuffer
);
504 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
512 /* reference new buffer */
513 mtx_lock(&bufObj
->Mutex
);
514 if (bufObj
->RefCount
== 0) {
515 /* this buffer's being deleted (look just above) */
516 /* Not sure this can every really happen. Warn if it does. */
517 _mesa_problem(NULL
, "referencing deleted buffer object");
524 mtx_unlock(&bufObj
->Mutex
);
530 * Get the value of MESA_NO_MINMAX_CACHE.
533 get_no_minmax_cache()
535 static bool read
= false;
536 static bool disable
= false;
539 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
548 * Initialize a buffer object to default values.
551 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
552 struct gl_buffer_object
*obj
,
555 memset(obj
, 0, sizeof(struct gl_buffer_object
));
556 mtx_init(&obj
->Mutex
, mtx_plain
);
559 obj
->Usage
= GL_STATIC_DRAW_ARB
;
561 if (get_no_minmax_cache())
562 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
568 * Callback called from _mesa_HashWalk()
571 count_buffer_size(GLuint key
, void *data
, void *userData
)
573 const struct gl_buffer_object
*bufObj
=
574 (const struct gl_buffer_object
*) data
;
575 GLuint
*total
= (GLuint
*) userData
;
578 *total
= *total
+ bufObj
->Size
;
583 * Compute total size (in bytes) of all buffer objects for the given context.
584 * For debugging purposes.
587 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
591 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
598 * Allocate space for and store data in a buffer object. Any data that was
599 * previously stored in the buffer object is lost. If \c data is \c NULL,
600 * memory will be allocated, but no copy will occur.
602 * This is the default callback for \c dd_function_table::BufferData()
603 * Note that all GL error checking will have been done already.
605 * \param ctx GL context.
606 * \param target Buffer object target on which to operate.
607 * \param size Size, in bytes, of the new data store.
608 * \param data Pointer to the data to store in the buffer object. This
609 * pointer may be \c NULL.
610 * \param usage Hints about how the data will be used.
611 * \param bufObj Object to be used.
613 * \return GL_TRUE for success, GL_FALSE for failure
614 * \sa glBufferDataARB, dd_function_table::BufferData.
617 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
618 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
619 struct gl_buffer_object
*bufObj
)
625 _mesa_align_free( bufObj
->Data
);
627 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
629 bufObj
->Data
= (GLubyte
*) new_data
;
631 bufObj
->Usage
= usage
;
632 bufObj
->StorageFlags
= storageFlags
;
635 memcpy( bufObj
->Data
, data
, size
);
647 * Replace data in a subrange of buffer object. If the data range
648 * specified by \c size + \c offset extends beyond the end of the buffer or
649 * if \c data is \c NULL, no copy is performed.
651 * This is the default callback for \c dd_function_table::BufferSubData()
652 * Note that all GL error checking will have been done already.
654 * \param ctx GL context.
655 * \param offset Offset of the first byte to be modified.
656 * \param size Size, in bytes, of the data range.
657 * \param data Pointer to the data to store in the buffer object.
658 * \param bufObj Object to be used.
660 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
663 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
664 GLsizeiptr size
, const GLvoid
*data
,
665 struct gl_buffer_object
*bufObj
)
669 /* this should have been caught in _mesa_BufferSubData() */
670 assert(size
+ offset
<= bufObj
->Size
);
673 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
679 * Retrieve data from a subrange of buffer object. If the data range
680 * specified by \c size + \c offset extends beyond the end of the buffer or
681 * if \c data is \c NULL, no copy is performed.
683 * This is the default callback for \c dd_function_table::GetBufferSubData()
684 * Note that all GL error checking will have been done already.
686 * \param ctx GL context.
687 * \param target Buffer object target on which to operate.
688 * \param offset Offset of the first byte to be fetched.
689 * \param size Size, in bytes, of the data range.
690 * \param data Destination for data
691 * \param bufObj Object to be used.
693 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
696 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
697 GLsizeiptrARB size
, GLvoid
* data
,
698 struct gl_buffer_object
* bufObj
)
702 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
703 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
709 * Clear a subrange of the buffer object with copies of the supplied data.
710 * If data is NULL the buffer is filled with zeros.
712 * This is the default callback for \c dd_function_table::ClearBufferSubData()
713 * Note that all GL error checking will have been done already.
715 * \param ctx GL context.
716 * \param offset Offset of the first byte to be cleared.
717 * \param size Size, in bytes, of the to be cleared range.
718 * \param clearValue Source of the data.
719 * \param clearValueSize Size, in bytes, of the supplied data.
720 * \param bufObj Object to be cleared.
722 * \sa glClearBufferSubData, glClearBufferData and
723 * dd_function_table::ClearBufferSubData.
726 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
727 GLintptr offset
, GLsizeiptr size
,
728 const GLvoid
*clearValue
,
729 GLsizeiptr clearValueSize
,
730 struct gl_buffer_object
*bufObj
)
735 assert(ctx
->Driver
.MapBufferRange
);
736 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
738 GL_MAP_INVALIDATE_RANGE_BIT
,
739 bufObj
, MAP_INTERNAL
);
742 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
746 if (clearValue
== NULL
) {
747 /* Clear with zeros, per the spec */
748 memset(dest
, 0, size
);
749 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
753 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
754 memcpy(dest
, clearValue
, clearValueSize
);
755 dest
+= clearValueSize
;
758 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
763 * Default fallback for \c dd_function_table::MapBufferRange().
764 * Called via glMapBufferRange().
767 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
768 GLsizeiptr length
, GLbitfield access
,
769 struct gl_buffer_object
*bufObj
,
770 gl_map_buffer_index index
)
773 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
774 /* Just return a direct pointer to the data */
775 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
776 bufObj
->Mappings
[index
].Length
= length
;
777 bufObj
->Mappings
[index
].Offset
= offset
;
778 bufObj
->Mappings
[index
].AccessFlags
= access
;
779 return bufObj
->Mappings
[index
].Pointer
;
784 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
785 * Called via glFlushMappedBufferRange().
788 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
789 GLintptr offset
, GLsizeiptr length
,
790 struct gl_buffer_object
*obj
,
791 gl_map_buffer_index index
)
803 * Default callback for \c dd_function_table::UnmapBuffer().
805 * The input parameters will have been already tested for errors.
807 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
810 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
811 gl_map_buffer_index index
)
814 /* XXX we might assert here that bufObj->Pointer is non-null */
815 bufObj
->Mappings
[index
].Pointer
= NULL
;
816 bufObj
->Mappings
[index
].Length
= 0;
817 bufObj
->Mappings
[index
].Offset
= 0;
818 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
824 * Default fallback for \c dd_function_table::CopyBufferSubData().
825 * Called via glCopyBufferSubData().
828 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
829 struct gl_buffer_object
*src
,
830 struct gl_buffer_object
*dst
,
831 GLintptr readOffset
, GLintptr writeOffset
,
834 GLubyte
*srcPtr
, *dstPtr
;
837 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
839 GL_MAP_WRITE_BIT
, src
,
845 srcPtr
+= readOffset
;
846 dstPtr
+= writeOffset
;
848 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
849 GL_MAP_READ_BIT
, src
,
851 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
853 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
857 /* Note: the src and dst regions will never overlap. Trying to do so
858 * would generate GL_INVALID_VALUE earlier.
860 if (srcPtr
&& dstPtr
)
861 memcpy(dstPtr
, srcPtr
, size
);
863 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
865 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
871 * Initialize the state associated with buffer objects
874 _mesa_init_buffer_objects( struct gl_context
*ctx
)
878 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
879 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
880 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
882 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
883 ctx
->Shared
->NullBufferObj
);
885 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
886 ctx
->Shared
->NullBufferObj
);
887 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
888 ctx
->Shared
->NullBufferObj
);
890 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
891 ctx
->Shared
->NullBufferObj
);
893 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
894 ctx
->Shared
->NullBufferObj
);
896 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
897 ctx
->Shared
->NullBufferObj
);
899 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
900 ctx
->Shared
->NullBufferObj
);
902 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
903 ctx
->Shared
->NullBufferObj
);
905 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
906 ctx
->Shared
->NullBufferObj
);
908 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
909 ctx
->Shared
->NullBufferObj
);
911 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
912 _mesa_reference_buffer_object(ctx
,
913 &ctx
->UniformBufferBindings
[i
].BufferObject
,
914 ctx
->Shared
->NullBufferObj
);
915 ctx
->UniformBufferBindings
[i
].Offset
= -1;
916 ctx
->UniformBufferBindings
[i
].Size
= -1;
919 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
920 _mesa_reference_buffer_object(ctx
,
921 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
922 ctx
->Shared
->NullBufferObj
);
923 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
924 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
927 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
928 _mesa_reference_buffer_object(ctx
,
929 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
930 ctx
->Shared
->NullBufferObj
);
931 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
932 ctx
->AtomicBufferBindings
[i
].Size
= 0;
938 _mesa_free_buffer_objects( struct gl_context
*ctx
)
942 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
944 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
945 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
947 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
949 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
951 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
953 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
955 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
957 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
959 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
961 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
962 _mesa_reference_buffer_object(ctx
,
963 &ctx
->UniformBufferBindings
[i
].BufferObject
,
967 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
968 _mesa_reference_buffer_object(ctx
,
969 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
973 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
974 _mesa_reference_buffer_object(ctx
,
975 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
982 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
984 struct gl_buffer_object
**buf_handle
,
987 struct gl_buffer_object
*buf
= *buf_handle
;
989 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
990 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
994 if (!buf
|| buf
== &DummyBufferObject
) {
995 /* If this is a new buffer object id, or one which was generated but
996 * never used before, allocate a buffer object now.
998 assert(ctx
->Driver
.NewBufferObject
);
999 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
1001 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
1004 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1012 * Bind the specified target to buffer for the specified context.
1013 * Called by glBindBuffer() and other functions.
1016 bind_buffer_object(struct gl_context
*ctx
,
1017 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1019 struct gl_buffer_object
*oldBufObj
;
1020 struct gl_buffer_object
*newBufObj
= NULL
;
1024 /* Get pointer to old buffer object (to be unbound) */
1025 oldBufObj
= *bindTarget
;
1026 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1027 return; /* rebinding the same buffer object- no change */
1030 * Get pointer to new buffer object (newBufObj)
1033 /* The spec says there's not a buffer object named 0, but we use
1034 * one internally because it simplifies things.
1036 newBufObj
= ctx
->Shared
->NullBufferObj
;
1039 /* non-default buffer object */
1040 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1041 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1042 &newBufObj
, "glBindBuffer"))
1046 /* record usage history */
1047 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1048 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1051 /* bind new buffer */
1052 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1057 * Update the default buffer objects in the given context to reference those
1058 * specified in the shared state and release those referencing the old
1062 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1064 /* Bind the NullBufferObj to remove references to those
1065 * in the shared context hash table.
1067 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1068 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1069 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1070 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1076 * Return the gl_buffer_object for the given ID.
1077 * Always return NULL for ID 0.
1079 struct gl_buffer_object
*
1080 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1085 return (struct gl_buffer_object
*)
1086 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1090 struct gl_buffer_object
*
1091 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1096 return (struct gl_buffer_object
*)
1097 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1101 * A convenience function for direct state access functions that throws
1102 * GL_INVALID_OPERATION if buffer is not the name of an existing
1105 struct gl_buffer_object
*
1106 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1109 struct gl_buffer_object
*bufObj
;
1111 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1112 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1113 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1114 "%s(non-existent buffer object %u)", caller
, buffer
);
1123 * Look up a buffer object for a multi-bind function.
1125 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1126 * of generating an error if the buffer ID is not zero or the name
1127 * of an existing buffer object.
1129 * If the buffer ID refers to an existing buffer object, a pointer
1130 * to the buffer object is returned. If the ID is zero, a pointer
1131 * to the shared NullBufferObj is returned. If the ID is not zero
1132 * and does not refer to a valid buffer object, this function
1135 * This function assumes that the caller has already locked the
1136 * hash table mutex by calling
1137 * _mesa_HashLockMutex(ctx->Shared->BufferObjects).
1139 struct gl_buffer_object
*
1140 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1141 const GLuint
*buffers
,
1142 GLuint index
, const char *caller
)
1144 struct gl_buffer_object
*bufObj
;
1146 if (buffers
[index
] != 0) {
1147 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1149 /* The multi-bind functions don't create the buffer objects
1150 when they don't exist. */
1151 if (bufObj
== &DummyBufferObject
)
1154 bufObj
= ctx
->Shared
->NullBufferObj
;
1157 /* The ARB_multi_bind spec says:
1159 * "An INVALID_OPERATION error is generated if any value
1160 * in <buffers> is not zero or the name of an existing
1161 * buffer object (per binding)."
1163 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1164 "%s(buffers[%u]=%u is not zero or the name "
1165 "of an existing buffer object)",
1166 caller
, index
, buffers
[index
]);
1174 * If *ptr points to obj, set ptr = the Null/default buffer object.
1175 * This is a helper for buffer object deletion.
1176 * The GL spec says that deleting a buffer object causes it to get
1177 * unbound from all arrays in the current context.
1180 unbind(struct gl_context
*ctx
,
1181 struct gl_vertex_array_object
*vao
, unsigned index
,
1182 struct gl_buffer_object
*obj
)
1184 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1185 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1186 vao
->BufferBinding
[index
].Offset
,
1187 vao
->BufferBinding
[index
].Stride
);
1193 * Plug default/fallback buffer object functions into the device
1197 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1199 /* GL_ARB_vertex/pixel_buffer_object */
1200 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1201 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1202 driver
->BufferData
= buffer_data_fallback
;
1203 driver
->BufferSubData
= buffer_sub_data_fallback
;
1204 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
1205 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1207 /* GL_ARB_clear_buffer_object */
1208 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1210 /* GL_ARB_map_buffer_range */
1211 driver
->MapBufferRange
= map_buffer_range_fallback
;
1212 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1214 /* GL_ARB_copy_buffer */
1215 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1220 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1221 struct gl_buffer_object
*bufObj
)
1225 for (i
= 0; i
< MAP_COUNT
; i
++) {
1226 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1227 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1228 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1229 bufObj
->Mappings
[i
].AccessFlags
= 0;
1235 /**********************************************************************/
1237 /**********************************************************************/
1240 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1242 GET_CURRENT_CONTEXT(ctx
);
1244 if (MESA_VERBOSE
& VERBOSE_API
) {
1245 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1246 _mesa_enum_to_string(target
), buffer
);
1249 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1251 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1252 _mesa_enum_to_string(target
));
1256 bind_buffer_object(ctx
, bindTarget
, buffer
);
1261 * Delete a set of buffer objects.
1263 * \param n Number of buffer objects to delete.
1264 * \param ids Array of \c n buffer object IDs.
1267 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1269 GET_CURRENT_CONTEXT(ctx
);
1271 FLUSH_VERTICES(ctx
, 0);
1274 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1278 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1280 for (i
= 0; i
< n
; i
++) {
1281 struct gl_buffer_object
*bufObj
=
1282 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1284 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1287 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1289 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1291 /* unbind any vertex pointers bound to this buffer */
1292 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1293 unbind(ctx
, vao
, j
, bufObj
);
1296 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1297 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1299 if (vao
->IndexBufferObj
== bufObj
) {
1300 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1303 /* unbind ARB_draw_indirect binding point */
1304 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1305 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1308 /* unbind ARB_indirect_parameters binding point */
1309 if (ctx
->ParameterBuffer
== bufObj
) {
1310 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1313 /* unbind ARB_compute_shader binding point */
1314 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1315 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1318 /* unbind ARB_copy_buffer binding points */
1319 if (ctx
->CopyReadBuffer
== bufObj
) {
1320 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1322 if (ctx
->CopyWriteBuffer
== bufObj
) {
1323 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1326 /* unbind transform feedback binding points */
1327 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1328 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1330 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1331 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1332 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1336 /* unbind UBO binding points */
1337 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1338 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1339 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1343 if (ctx
->UniformBuffer
== bufObj
) {
1344 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1347 /* unbind SSBO binding points */
1348 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1349 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1350 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1354 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1355 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1358 /* unbind Atomci Buffer binding points */
1359 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1360 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1361 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1365 if (ctx
->AtomicBuffer
== bufObj
) {
1366 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1369 /* unbind any pixel pack/unpack pointers bound to this buffer */
1370 if (ctx
->Pack
.BufferObj
== bufObj
) {
1371 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1373 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1374 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1377 if (ctx
->Texture
.BufferObject
== bufObj
) {
1378 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1381 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1382 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1385 /* unbind query buffer binding point */
1386 if (ctx
->QueryBuffer
== bufObj
) {
1387 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1390 /* The ID is immediately freed for re-use */
1391 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1392 /* Make sure we do not run into the classic ABA problem on bind.
1393 * We don't want to allow re-binding a buffer object that's been
1394 * "deleted" by glDeleteBuffers().
1396 * The explicit rebinding to the default object in the current context
1397 * prevents the above in the current context, but another context
1398 * sharing the same objects might suffer from this problem.
1399 * The alternative would be to do the hash lookup in any case on bind
1400 * which would introduce more runtime overhead than this.
1402 bufObj
->DeletePending
= GL_TRUE
;
1403 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1407 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1412 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1413 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1417 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1419 GET_CURRENT_CONTEXT(ctx
);
1422 struct gl_buffer_object
*buf
;
1424 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1426 if (MESA_VERBOSE
& VERBOSE_API
)
1427 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1430 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1439 * This must be atomic (generation and allocation of buffer object IDs)
1441 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1443 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1445 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1446 * DummyBufferObject. Otherwise, create a new buffer object and insert
1449 for (i
= 0; i
< n
; i
++) {
1450 buffers
[i
] = first
+ i
;
1452 assert(ctx
->Driver
.NewBufferObject
);
1453 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1455 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1456 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1461 buf
= &DummyBufferObject
;
1463 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1466 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1470 * Generate a set of unique buffer object IDs and store them in \c buffers.
1472 * \param n Number of IDs to generate.
1473 * \param buffers Array of \c n locations to store the IDs.
1476 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1478 create_buffers(n
, buffers
, false);
1482 * Create a set of buffer objects and store their unique IDs in \c buffers.
1484 * \param n Number of IDs to generate.
1485 * \param buffers Array of \c n locations to store the IDs.
1488 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1490 create_buffers(n
, buffers
, true);
1495 * Determine if ID is the name of a buffer object.
1497 * \param id ID of the potential buffer object.
1498 * \return \c GL_TRUE if \c id is the name of a buffer object,
1499 * \c GL_FALSE otherwise.
1501 GLboolean GLAPIENTRY
1502 _mesa_IsBuffer(GLuint id
)
1504 struct gl_buffer_object
*bufObj
;
1505 GET_CURRENT_CONTEXT(ctx
);
1506 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1508 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1510 return bufObj
&& bufObj
!= &DummyBufferObject
;
1515 _mesa_buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1516 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1517 GLbitfield flags
, const char *func
)
1520 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1524 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1526 GL_MAP_PERSISTENT_BIT
|
1527 GL_MAP_COHERENT_BIT
|
1528 GL_DYNAMIC_STORAGE_BIT
|
1529 GL_CLIENT_STORAGE_BIT
;
1531 if (ctx
->Extensions
.ARB_sparse_buffer
)
1532 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1534 if (flags
& ~valid_flags
) {
1535 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1539 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1541 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1542 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1543 * MAP_READ_BIT or MAP_WRITE_BIT."
1545 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1546 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1547 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1551 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1552 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1553 _mesa_error(ctx
, GL_INVALID_VALUE
,
1554 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1558 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1559 _mesa_error(ctx
, GL_INVALID_VALUE
,
1560 "%s(COHERENT and flags!=PERSISTENT)", func
);
1564 if (bufObj
->Immutable
) {
1565 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1569 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1570 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1572 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1574 bufObj
->Written
= GL_TRUE
;
1575 bufObj
->Immutable
= GL_TRUE
;
1576 bufObj
->MinMaxCacheDirty
= true;
1578 assert(ctx
->Driver
.BufferData
);
1579 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1581 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1582 /* Even though the interaction between AMD_pinned_memory and
1583 * glBufferStorage is not described in the spec, Graham Sellers
1584 * said that it should behave the same as glBufferData.
1586 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1589 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1595 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1598 GET_CURRENT_CONTEXT(ctx
);
1599 struct gl_buffer_object
*bufObj
;
1601 bufObj
= get_buffer(ctx
, "glBufferStorage", target
, GL_INVALID_OPERATION
);
1605 _mesa_buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
,
1610 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1613 GET_CURRENT_CONTEXT(ctx
);
1614 struct gl_buffer_object
*bufObj
;
1616 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferStorage");
1621 * In direct state access, buffer objects have an unspecified target since
1622 * they are not required to be bound.
1624 _mesa_buffer_storage(ctx
, bufObj
, GL_NONE
, size
, data
, flags
,
1625 "glNamedBufferStorage");
1630 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1631 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1632 GLenum usage
, const char *func
)
1636 if (MESA_VERBOSE
& VERBOSE_API
) {
1637 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1639 _mesa_enum_to_string(target
),
1640 (long int) size
, data
,
1641 _mesa_enum_to_string(usage
));
1645 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1650 case GL_STREAM_DRAW_ARB
:
1651 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1654 case GL_STATIC_DRAW_ARB
:
1655 case GL_DYNAMIC_DRAW_ARB
:
1659 case GL_STREAM_READ_ARB
:
1660 case GL_STREAM_COPY_ARB
:
1661 case GL_STATIC_READ_ARB
:
1662 case GL_STATIC_COPY_ARB
:
1663 case GL_DYNAMIC_READ_ARB
:
1664 case GL_DYNAMIC_COPY_ARB
:
1665 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1669 valid_usage
= false;
1674 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1675 _mesa_enum_to_string(usage
));
1679 if (bufObj
->Immutable
) {
1680 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1684 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1685 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1687 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1689 bufObj
->Written
= GL_TRUE
;
1690 bufObj
->MinMaxCacheDirty
= true;
1693 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1694 bufObj
->Name
, size
, data
, usage
);
1701 assert(ctx
->Driver
.BufferData
);
1702 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1705 GL_DYNAMIC_STORAGE_BIT
,
1707 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1708 /* From GL_AMD_pinned_memory:
1710 * INVALID_OPERATION is generated by BufferData if <target> is
1711 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1712 * mapped to the GPU address space.
1714 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1717 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1723 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1724 const GLvoid
*data
, GLenum usage
)
1726 GET_CURRENT_CONTEXT(ctx
);
1727 struct gl_buffer_object
*bufObj
;
1729 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1733 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1738 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1741 GET_CURRENT_CONTEXT(ctx
);
1742 struct gl_buffer_object
*bufObj
;
1744 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1748 /* In direct state access, buffer objects have an unspecified target since
1749 * they are not required to be bound.
1751 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1752 "glNamedBufferData");
1757 * Implementation for glBufferSubData and glNamedBufferSubData.
1759 * \param ctx GL context.
1760 * \param bufObj The buffer object.
1761 * \param offset Offset of the first byte of the subdata range.
1762 * \param size Size, in bytes, of the subdata range.
1763 * \param data The data store.
1764 * \param func Name of calling function for recording errors.
1768 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1769 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1772 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1774 /* error already recorded */
1778 if (bufObj
->Immutable
&&
1779 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1780 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1787 bufObj
->NumSubDataCalls
++;
1789 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1790 bufObj
->Usage
== GL_STATIC_COPY
) &&
1791 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
) {
1792 /* If the application declared the buffer as static draw/copy or stream
1793 * draw, it should not be frequently modified with glBufferSubData.
1795 BUFFER_USAGE_WARNING(ctx
,
1796 "using %s(buffer %u, offset %u, size %u) to "
1797 "update a %s buffer",
1798 func
, bufObj
->Name
, offset
, size
,
1799 _mesa_enum_to_string(bufObj
->Usage
));
1802 bufObj
->Written
= GL_TRUE
;
1803 bufObj
->MinMaxCacheDirty
= true;
1805 assert(ctx
->Driver
.BufferSubData
);
1806 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1810 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1811 GLsizeiptr size
, const GLvoid
*data
)
1813 GET_CURRENT_CONTEXT(ctx
);
1814 struct gl_buffer_object
*bufObj
;
1816 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1820 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1824 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1825 GLsizeiptr size
, const GLvoid
*data
)
1827 GET_CURRENT_CONTEXT(ctx
);
1828 struct gl_buffer_object
*bufObj
;
1830 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1834 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1835 "glNamedBufferSubData");
1840 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1841 GLsizeiptr size
, GLvoid
*data
)
1843 GET_CURRENT_CONTEXT(ctx
);
1844 struct gl_buffer_object
*bufObj
;
1846 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1847 GL_INVALID_OPERATION
);
1851 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1852 "glGetBufferSubData")) {
1856 assert(ctx
->Driver
.GetBufferSubData
);
1857 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1861 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1862 GLsizeiptr size
, GLvoid
*data
)
1864 GET_CURRENT_CONTEXT(ctx
);
1865 struct gl_buffer_object
*bufObj
;
1867 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1868 "glGetNamedBufferSubData");
1872 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1873 "glGetNamedBufferSubData")) {
1877 assert(ctx
->Driver
.GetBufferSubData
);
1878 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1883 * \param subdata true if caller is *SubData, false if *Data
1886 _mesa_clear_buffer_sub_data(struct gl_context
*ctx
,
1887 struct gl_buffer_object
*bufObj
,
1888 GLenum internalformat
,
1889 GLintptr offset
, GLsizeiptr size
,
1890 GLenum format
, GLenum type
,
1892 const char *func
, bool subdata
)
1894 mesa_format mesaFormat
;
1895 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1896 GLsizeiptr clearValueSize
;
1898 /* This checks for disallowed mappings. */
1899 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1904 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1905 format
, type
, func
);
1907 if (mesaFormat
== MESA_FORMAT_NONE
) {
1911 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1912 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1913 _mesa_error(ctx
, GL_INVALID_VALUE
,
1914 "%s(offset or size is not a multiple of "
1915 "internalformat size)", func
);
1919 /* Bail early. Negative size has already been checked. */
1923 bufObj
->MinMaxCacheDirty
= true;
1926 /* clear to zeros, per the spec */
1927 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1928 NULL
, clearValueSize
, bufObj
);
1932 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1933 format
, type
, data
, func
)) {
1937 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1938 clearValue
, clearValueSize
, bufObj
);
1942 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1943 GLenum type
, const GLvoid
*data
)
1945 GET_CURRENT_CONTEXT(ctx
);
1946 struct gl_buffer_object
*bufObj
;
1948 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1952 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1954 "glClearBufferData", false);
1958 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1959 GLenum format
, GLenum type
, const GLvoid
*data
)
1961 GET_CURRENT_CONTEXT(ctx
);
1962 struct gl_buffer_object
*bufObj
;
1964 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1968 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1970 "glClearNamedBufferData", false);
1975 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1976 GLintptr offset
, GLsizeiptr size
,
1977 GLenum format
, GLenum type
,
1980 GET_CURRENT_CONTEXT(ctx
);
1981 struct gl_buffer_object
*bufObj
;
1983 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
1987 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1989 "glClearBufferSubData", true);
1993 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
1994 GLintptr offset
, GLsizeiptr size
,
1995 GLenum format
, GLenum type
,
1998 GET_CURRENT_CONTEXT(ctx
);
1999 struct gl_buffer_object
*bufObj
;
2001 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2002 "glClearNamedBufferSubData");
2006 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2008 "glClearNamedBufferSubData", true);
2013 _mesa_unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2016 GLboolean status
= GL_TRUE
;
2017 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2019 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2020 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2021 "%s(buffer is not mapped)", func
);
2026 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2027 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2029 /* check that last 100 bytes are still = magic value */
2030 for (i
= 0; i
< 100; i
++) {
2031 GLuint pos
= bufObj
->Size
- i
- 1;
2032 if (buf
[pos
] != 123) {
2033 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2034 " at position %d (value = %u)\n",
2042 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2043 GLuint i
, unchanged
= 0;
2044 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2046 /* check which bytes changed */
2047 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2048 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2055 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2056 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2061 status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2062 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2063 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2064 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2065 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2070 GLboolean GLAPIENTRY
2071 _mesa_UnmapBuffer(GLenum target
)
2073 GET_CURRENT_CONTEXT(ctx
);
2074 struct gl_buffer_object
*bufObj
;
2076 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2080 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2083 GLboolean GLAPIENTRY
2084 _mesa_UnmapNamedBuffer(GLuint buffer
)
2086 GET_CURRENT_CONTEXT(ctx
);
2087 struct gl_buffer_object
*bufObj
;
2089 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2093 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2098 get_buffer_parameter(struct gl_context
*ctx
,
2099 struct gl_buffer_object
*bufObj
, GLenum pname
,
2100 GLint64
*params
, const char *func
)
2103 case GL_BUFFER_SIZE_ARB
:
2104 *params
= bufObj
->Size
;
2106 case GL_BUFFER_USAGE_ARB
:
2107 *params
= bufObj
->Usage
;
2109 case GL_BUFFER_ACCESS_ARB
:
2110 *params
= simplified_access_mode(ctx
,
2111 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2113 case GL_BUFFER_MAPPED_ARB
:
2114 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2116 case GL_BUFFER_ACCESS_FLAGS
:
2117 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2119 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2121 case GL_BUFFER_MAP_OFFSET
:
2122 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2124 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2126 case GL_BUFFER_MAP_LENGTH
:
2127 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2129 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2131 case GL_BUFFER_IMMUTABLE_STORAGE
:
2132 if (!ctx
->Extensions
.ARB_buffer_storage
)
2134 *params
= bufObj
->Immutable
;
2136 case GL_BUFFER_STORAGE_FLAGS
:
2137 if (!ctx
->Extensions
.ARB_buffer_storage
)
2139 *params
= bufObj
->StorageFlags
;
2148 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2149 _mesa_enum_to_string(pname
));
2154 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2156 GET_CURRENT_CONTEXT(ctx
);
2157 struct gl_buffer_object
*bufObj
;
2160 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2161 GL_INVALID_OPERATION
);
2165 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2166 "glGetBufferParameteriv"))
2167 return; /* Error already recorded. */
2169 *params
= (GLint
) parameter
;
2173 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2175 GET_CURRENT_CONTEXT(ctx
);
2176 struct gl_buffer_object
*bufObj
;
2179 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2180 GL_INVALID_OPERATION
);
2184 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2185 "glGetBufferParameteri64v"))
2186 return; /* Error already recorded. */
2188 *params
= parameter
;
2192 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2194 GET_CURRENT_CONTEXT(ctx
);
2195 struct gl_buffer_object
*bufObj
;
2198 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2199 "glGetNamedBufferParameteriv");
2203 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2204 "glGetNamedBufferParameteriv"))
2205 return; /* Error already recorded. */
2207 *params
= (GLint
) parameter
;
2211 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2214 GET_CURRENT_CONTEXT(ctx
);
2215 struct gl_buffer_object
*bufObj
;
2218 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2219 "glGetNamedBufferParameteri64v");
2223 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2224 "glGetNamedBufferParameteri64v"))
2225 return; /* Error already recorded. */
2227 *params
= parameter
;
2232 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2234 GET_CURRENT_CONTEXT(ctx
);
2235 struct gl_buffer_object
*bufObj
;
2237 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2238 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2239 "GL_BUFFER_MAP_POINTER)");
2243 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2244 GL_INVALID_OPERATION
);
2248 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2252 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2254 GET_CURRENT_CONTEXT(ctx
);
2255 struct gl_buffer_object
*bufObj
;
2257 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2258 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2259 "GL_BUFFER_MAP_POINTER)");
2263 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2264 "glGetNamedBufferPointerv");
2268 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2273 _mesa_copy_buffer_sub_data(struct gl_context
*ctx
,
2274 struct gl_buffer_object
*src
,
2275 struct gl_buffer_object
*dst
,
2276 GLintptr readOffset
, GLintptr writeOffset
,
2277 GLsizeiptr size
, const char *func
)
2279 if (_mesa_check_disallowed_mapping(src
)) {
2280 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2281 "%s(readBuffer is mapped)", func
);
2285 if (_mesa_check_disallowed_mapping(dst
)) {
2286 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2287 "%s(writeBuffer is mapped)", func
);
2291 if (readOffset
< 0) {
2292 _mesa_error(ctx
, GL_INVALID_VALUE
,
2293 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2297 if (writeOffset
< 0) {
2298 _mesa_error(ctx
, GL_INVALID_VALUE
,
2299 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2304 _mesa_error(ctx
, GL_INVALID_VALUE
,
2305 "%s(size %d < 0)", func
, (int) size
);
2309 if (readOffset
+ size
> src
->Size
) {
2310 _mesa_error(ctx
, GL_INVALID_VALUE
,
2311 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2312 (int) readOffset
, (int) size
, (int) src
->Size
);
2316 if (writeOffset
+ size
> dst
->Size
) {
2317 _mesa_error(ctx
, GL_INVALID_VALUE
,
2318 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2319 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2324 if (readOffset
+ size
<= writeOffset
) {
2327 else if (writeOffset
+ size
<= readOffset
) {
2331 /* overlapping src/dst is illegal */
2332 _mesa_error(ctx
, GL_INVALID_VALUE
,
2333 "%s(overlapping src/dst)", func
);
2338 dst
->MinMaxCacheDirty
= true;
2340 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2344 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2345 GLintptr readOffset
, GLintptr writeOffset
,
2348 GET_CURRENT_CONTEXT(ctx
);
2349 struct gl_buffer_object
*src
, *dst
;
2351 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2352 GL_INVALID_OPERATION
);
2356 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2357 GL_INVALID_OPERATION
);
2361 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2362 "glCopyBufferSubData");
2366 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2367 GLintptr readOffset
, GLintptr writeOffset
,
2370 GET_CURRENT_CONTEXT(ctx
);
2371 struct gl_buffer_object
*src
, *dst
;
2373 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2374 "glCopyNamedBufferSubData");
2378 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2379 "glCopyNamedBufferSubData");
2383 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2384 "glCopyNamedBufferSubData");
2389 _mesa_map_buffer_range(struct gl_context
*ctx
,
2390 struct gl_buffer_object
*bufObj
,
2391 GLintptr offset
, GLsizeiptr length
,
2392 GLbitfield access
, const char *func
)
2395 GLbitfield allowed_access
;
2397 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
2400 _mesa_error(ctx
, GL_INVALID_VALUE
,
2401 "%s(offset %ld < 0)", func
, (long) offset
);
2406 _mesa_error(ctx
, GL_INVALID_VALUE
,
2407 "%s(length %ld < 0)", func
, (long) length
);
2411 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2413 * "An INVALID_OPERATION error is generated for any of the following
2416 * * <length> is zero."
2418 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2419 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2423 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2427 allowed_access
= GL_MAP_READ_BIT
|
2429 GL_MAP_INVALIDATE_RANGE_BIT
|
2430 GL_MAP_INVALIDATE_BUFFER_BIT
|
2431 GL_MAP_FLUSH_EXPLICIT_BIT
|
2432 GL_MAP_UNSYNCHRONIZED_BIT
;
2434 if (ctx
->Extensions
.ARB_buffer_storage
) {
2435 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2436 GL_MAP_COHERENT_BIT
;
2439 if (access
& ~allowed_access
) {
2440 /* generate an error if any bits other than those allowed are set */
2441 _mesa_error(ctx
, GL_INVALID_VALUE
,
2442 "%s(access has undefined bits set)", func
);
2446 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2447 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2448 "%s(access indicates neither read or write)", func
);
2452 if ((access
& GL_MAP_READ_BIT
) &&
2453 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2454 GL_MAP_INVALIDATE_BUFFER_BIT
|
2455 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2456 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2457 "%s(read access with disallowed bits)", func
);
2461 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2462 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2463 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2464 "%s(access has flush explicit without write)", func
);
2468 if (access
& GL_MAP_READ_BIT
&&
2469 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2470 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2471 "%s(buffer does not allow read access)", func
);
2475 if (access
& GL_MAP_WRITE_BIT
&&
2476 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2477 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2478 "%s(buffer does not allow write access)", func
);
2482 if (access
& GL_MAP_COHERENT_BIT
&&
2483 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2484 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2485 "%s(buffer does not allow coherent access)", func
);
2489 if (access
& GL_MAP_PERSISTENT_BIT
&&
2490 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2491 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2492 "%s(buffer does not allow persistent access)", func
);
2496 if (offset
+ length
> bufObj
->Size
) {
2497 _mesa_error(ctx
, GL_INVALID_VALUE
,
2498 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2499 (unsigned long) offset
, (unsigned long) length
,
2500 (unsigned long) bufObj
->Size
);
2504 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2505 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2506 "%s(buffer already mapped)", func
);
2510 if (!bufObj
->Size
) {
2511 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2515 if (access
& GL_MAP_WRITE_BIT
) {
2516 bufObj
->NumMapBufferWriteCalls
++;
2517 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2518 bufObj
->Usage
== GL_STATIC_COPY
) &&
2519 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2520 BUFFER_USAGE_WARNING(ctx
,
2521 "using %s(buffer %u, offset %u, length %u) to "
2522 "update a %s buffer",
2523 func
, bufObj
->Name
, offset
, length
,
2524 _mesa_enum_to_string(bufObj
->Usage
));
2528 assert(ctx
->Driver
.MapBufferRange
);
2529 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2532 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2535 /* The driver callback should have set all these fields.
2536 * This is important because other modules (like VBO) might call
2537 * the driver function directly.
2539 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2540 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2541 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2542 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2545 if (access
& GL_MAP_WRITE_BIT
) {
2546 bufObj
->Written
= GL_TRUE
;
2547 bufObj
->MinMaxCacheDirty
= true;
2551 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2552 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2553 bufObj
->Name
, bufObj
->Size
, access
);
2554 /* Access must be write only */
2555 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2557 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2558 for (i
= 0; i
< bufObj
->Size
; i
++)
2565 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2566 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2568 /* buffer is 100 bytes larger than requested, fill with magic value */
2569 for (i
= 0; i
< 100; i
++) {
2570 buf
[bufObj
->Size
- i
- 1] = 123;
2579 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2582 GET_CURRENT_CONTEXT(ctx
);
2583 struct gl_buffer_object
*bufObj
;
2585 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2586 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2587 "glMapBufferRange(ARB_map_buffer_range not supported)");
2591 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2595 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2596 "glMapBufferRange");
2600 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2603 GET_CURRENT_CONTEXT(ctx
);
2604 struct gl_buffer_object
*bufObj
;
2606 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2607 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2608 "glMapNamedBufferRange("
2609 "ARB_map_buffer_range not supported)");
2613 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2617 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2618 "glMapNamedBufferRange");
2622 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2623 * flags for input to _mesa_map_buffer_range.
2625 * \return true if the type of requested access is permissible.
2628 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2632 case GL_READ_ONLY_ARB
:
2633 *flags
= GL_MAP_READ_BIT
;
2634 return _mesa_is_desktop_gl(ctx
);
2635 case GL_WRITE_ONLY_ARB
:
2636 *flags
= GL_MAP_WRITE_BIT
;
2638 case GL_READ_WRITE_ARB
:
2639 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2640 return _mesa_is_desktop_gl(ctx
);
2647 _mesa_MapBuffer(GLenum target
, GLenum access
)
2649 GET_CURRENT_CONTEXT(ctx
);
2650 struct gl_buffer_object
*bufObj
;
2651 GLbitfield accessFlags
;
2653 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2654 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2658 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2662 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2667 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2669 GET_CURRENT_CONTEXT(ctx
);
2670 struct gl_buffer_object
*bufObj
;
2671 GLbitfield accessFlags
;
2673 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2674 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2678 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2682 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2683 "glMapNamedBuffer");
2688 _mesa_flush_mapped_buffer_range(struct gl_context
*ctx
,
2689 struct gl_buffer_object
*bufObj
,
2690 GLintptr offset
, GLsizeiptr length
,
2693 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2694 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2695 "%s(ARB_map_buffer_range not supported)", func
);
2700 _mesa_error(ctx
, GL_INVALID_VALUE
,
2701 "%s(offset %ld < 0)", func
, (long) offset
);
2706 _mesa_error(ctx
, GL_INVALID_VALUE
,
2707 "%s(length %ld < 0)", func
, (long) length
);
2711 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2712 /* buffer is not mapped */
2713 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2714 "%s(buffer is not mapped)", func
);
2718 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2719 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2720 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2721 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2725 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2726 _mesa_error(ctx
, GL_INVALID_VALUE
,
2727 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2728 (long) offset
, (long) length
,
2729 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2733 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2735 if (ctx
->Driver
.FlushMappedBufferRange
)
2736 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2741 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2744 GET_CURRENT_CONTEXT(ctx
);
2745 struct gl_buffer_object
*bufObj
;
2747 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2748 GL_INVALID_OPERATION
);
2752 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2753 "glFlushMappedBufferRange");
2757 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2760 GET_CURRENT_CONTEXT(ctx
);
2761 struct gl_buffer_object
*bufObj
;
2763 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2764 "glFlushMappedNamedBufferRange");
2768 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2769 "glFlushMappedNamedBufferRange");
2774 * Binds a buffer object to a uniform buffer binding point.
2776 * The caller is responsible for flushing vertices and updating
2780 set_ubo_binding(struct gl_context
*ctx
,
2781 struct gl_uniform_buffer_binding
*binding
,
2782 struct gl_buffer_object
*bufObj
,
2787 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2789 binding
->Offset
= offset
;
2790 binding
->Size
= size
;
2791 binding
->AutomaticSize
= autoSize
;
2793 /* If this is a real buffer object, mark it has having been used
2794 * at some point as a UBO.
2797 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
2801 * Binds a buffer object to a shader storage buffer binding point.
2803 * The caller is responsible for flushing vertices and updating
2807 set_ssbo_binding(struct gl_context
*ctx
,
2808 struct gl_shader_storage_buffer_binding
*binding
,
2809 struct gl_buffer_object
*bufObj
,
2814 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2816 binding
->Offset
= offset
;
2817 binding
->Size
= size
;
2818 binding
->AutomaticSize
= autoSize
;
2820 /* If this is a real buffer object, mark it has having been used
2821 * at some point as a SSBO.
2824 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
2828 * Binds a buffer object to a uniform buffer binding point.
2830 * Unlike set_ubo_binding(), this function also flushes vertices
2831 * and updates NewDriverState. It also checks if the binding
2832 * has actually changed before updating it.
2835 bind_uniform_buffer(struct gl_context
*ctx
,
2837 struct gl_buffer_object
*bufObj
,
2842 struct gl_uniform_buffer_binding
*binding
=
2843 &ctx
->UniformBufferBindings
[index
];
2845 if (binding
->BufferObject
== bufObj
&&
2846 binding
->Offset
== offset
&&
2847 binding
->Size
== size
&&
2848 binding
->AutomaticSize
== autoSize
) {
2852 FLUSH_VERTICES(ctx
, 0);
2853 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
2855 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2859 * Binds a buffer object to a shader storage buffer binding point.
2861 * Unlike set_ssbo_binding(), this function also flushes vertices
2862 * and updates NewDriverState. It also checks if the binding
2863 * has actually changed before updating it.
2866 bind_shader_storage_buffer(struct gl_context
*ctx
,
2868 struct gl_buffer_object
*bufObj
,
2873 struct gl_shader_storage_buffer_binding
*binding
=
2874 &ctx
->ShaderStorageBufferBindings
[index
];
2876 if (binding
->BufferObject
== bufObj
&&
2877 binding
->Offset
== offset
&&
2878 binding
->Size
== size
&&
2879 binding
->AutomaticSize
== autoSize
) {
2883 FLUSH_VERTICES(ctx
, 0);
2884 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
2886 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2890 * Bind a region of a buffer object to a uniform block binding point.
2891 * \param index the uniform buffer binding point index
2892 * \param bufObj the buffer object
2893 * \param offset offset to the start of buffer object region
2894 * \param size size of the buffer object region
2897 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
2899 struct gl_buffer_object
*bufObj
,
2903 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2904 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2908 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
2909 _mesa_error(ctx
, GL_INVALID_VALUE
,
2910 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2911 ctx
->Const
.UniformBufferOffsetAlignment
);
2915 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2920 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2921 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2925 * Bind a region of a buffer object to a shader storage block binding point.
2926 * \param index the shader storage buffer binding point index
2927 * \param bufObj the buffer object
2928 * \param offset offset to the start of buffer object region
2929 * \param size size of the buffer object region
2932 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
2934 struct gl_buffer_object
*bufObj
,
2938 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
2939 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2943 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
2944 _mesa_error(ctx
, GL_INVALID_VALUE
,
2945 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2946 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
2950 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2955 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
2956 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2960 * Bind a buffer object to a uniform block binding point.
2961 * As above, but offset = 0.
2964 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
2966 struct gl_buffer_object
*bufObj
)
2968 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2969 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2973 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2975 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2976 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2978 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2982 * Bind a buffer object to a shader storage block binding point.
2983 * As above, but offset = 0.
2986 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
2988 struct gl_buffer_object
*bufObj
)
2990 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
2991 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2995 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
2997 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2998 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3000 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3004 * Binds a buffer object to an atomic buffer binding point.
3006 * The caller is responsible for validating the offset,
3007 * flushing the vertices and updating NewDriverState.
3010 set_atomic_buffer_binding(struct gl_context
*ctx
,
3011 struct gl_atomic_buffer_binding
*binding
,
3012 struct gl_buffer_object
*bufObj
,
3016 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3018 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3019 binding
->Offset
= 0;
3022 binding
->Offset
= offset
;
3023 binding
->Size
= size
;
3024 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3029 * Binds a buffer object to an atomic buffer binding point.
3031 * Unlike set_atomic_buffer_binding(), this function also validates the
3032 * index and offset, flushes vertices, and updates NewDriverState.
3033 * It also checks if the binding has actually changing before
3037 bind_atomic_buffer(struct gl_context
*ctx
,
3039 struct gl_buffer_object
*bufObj
,
3044 struct gl_atomic_buffer_binding
*binding
;
3046 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3047 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3051 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3052 _mesa_error(ctx
, GL_INVALID_VALUE
,
3053 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3054 ATOMIC_COUNTER_SIZE
);
3058 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3060 binding
= &ctx
->AtomicBufferBindings
[index
];
3061 if (binding
->BufferObject
== bufObj
&&
3062 binding
->Offset
== offset
&&
3063 binding
->Size
== size
) {
3067 FLUSH_VERTICES(ctx
, 0);
3068 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3070 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3074 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3076 const GLintptr
*offsets
,
3077 const GLsizeiptr
*sizes
)
3079 if (offsets
[index
] < 0) {
3080 /* The ARB_multi_bind spec says:
3082 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3083 * value in <offsets> is less than zero (per binding)."
3085 _mesa_error(ctx
, GL_INVALID_VALUE
,
3086 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3087 index
, (int64_t) offsets
[index
]);
3091 if (sizes
[index
] <= 0) {
3092 /* The ARB_multi_bind spec says:
3094 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3095 * value in <sizes> is less than or equal to zero (per binding)."
3097 _mesa_error(ctx
, GL_INVALID_VALUE
,
3098 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3099 index
, (int64_t) sizes
[index
]);
3107 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3108 GLuint first
, GLsizei count
,
3111 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3112 _mesa_error(ctx
, GL_INVALID_ENUM
,
3113 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3117 /* The ARB_multi_bind_spec says:
3119 * "An INVALID_OPERATION error is generated if <first> + <count> is
3120 * greater than the number of target-specific indexed binding points,
3121 * as described in section 6.7.1."
3123 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3124 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3125 "%s(first=%u + count=%d > the value of "
3126 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3127 caller
, first
, count
,
3128 ctx
->Const
.MaxUniformBufferBindings
);
3136 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3137 GLuint first
, GLsizei count
,
3140 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3141 _mesa_error(ctx
, GL_INVALID_ENUM
,
3142 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3146 /* The ARB_multi_bind_spec says:
3148 * "An INVALID_OPERATION error is generated if <first> + <count> is
3149 * greater than the number of target-specific indexed binding points,
3150 * as described in section 6.7.1."
3152 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3153 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3154 "%s(first=%u + count=%d > the value of "
3155 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3156 caller
, first
, count
,
3157 ctx
->Const
.MaxShaderStorageBufferBindings
);
3165 * Unbind all uniform buffers in the range
3166 * <first> through <first>+<count>-1
3169 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3171 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3174 for (i
= 0; i
< count
; i
++)
3175 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3176 bufObj
, -1, -1, GL_TRUE
);
3180 * Unbind all shader storage buffers in the range
3181 * <first> through <first>+<count>-1
3184 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3187 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3190 for (i
= 0; i
< count
; i
++)
3191 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3192 bufObj
, -1, -1, GL_TRUE
);
3196 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3197 const GLuint
*buffers
,
3199 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3204 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3207 /* Assume that at least one binding will be changed */
3208 FLUSH_VERTICES(ctx
, 0);
3209 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
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.
3216 * In this case, the offsets and sizes associated with the
3217 * binding points are set to default values, ignoring
3218 * <offsets> and <sizes>."
3220 unbind_uniform_buffers(ctx
, first
, count
);
3224 /* Note that the error semantics for multi-bind commands differ from
3225 * those of other GL commands.
3227 * The Issues section in the ARB_multi_bind spec says:
3229 * "(11) Typically, OpenGL specifies that if an error is generated by a
3230 * command, that command has no effect. This is somewhat
3231 * unfortunate for multi-bind commands, because it would require a
3232 * first pass to scan the entire list of bound objects for errors
3233 * and then a second pass to actually perform the bindings.
3234 * Should we have different error semantics?
3236 * RESOLVED: Yes. In this specification, when the parameters for
3237 * one of the <count> binding points are invalid, that binding point
3238 * is not updated and an error will be generated. However, other
3239 * binding points in the same command will be updated if their
3240 * parameters are valid and no other error occurs."
3243 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3245 for (i
= 0; i
< count
; i
++) {
3246 struct gl_uniform_buffer_binding
*binding
=
3247 &ctx
->UniformBufferBindings
[first
+ i
];
3248 struct gl_buffer_object
*bufObj
;
3249 GLintptr offset
= 0;
3250 GLsizeiptr size
= 0;
3253 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3256 /* The ARB_multi_bind spec says:
3258 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3259 * pair of values in <offsets> and <sizes> does not respectively
3260 * satisfy the constraints described for those parameters for the
3261 * specified target, as described in section 6.7.1 (per binding)."
3263 * Section 6.7.1 refers to table 6.5, which says:
3265 * "┌───────────────────────────────────────────────────────────────┐
3266 * │ Uniform buffer array bindings (see sec. 7.6) │
3267 * ├─────────────────────┬─────────────────────────────────────────┤
3269 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3270 * │ │ OFFSET_ALIGNMENT │
3272 * │ size restriction │ none │
3273 * └─────────────────────┴─────────────────────────────────────────┘"
3275 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3276 _mesa_error(ctx
, GL_INVALID_VALUE
,
3277 "glBindBuffersRange(offsets[%u]=%" PRId64
3278 " is misaligned; it must be a multiple of the value of "
3279 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3280 "target=GL_UNIFORM_BUFFER)",
3281 i
, (int64_t) offsets
[i
],
3282 ctx
->Const
.UniformBufferOffsetAlignment
);
3286 offset
= offsets
[i
];
3290 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3291 bufObj
= binding
->BufferObject
;
3293 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3296 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3297 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3299 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3303 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3307 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3308 GLsizei count
, const GLuint
*buffers
,
3310 const GLintptr
*offsets
,
3311 const GLsizeiptr
*sizes
,
3316 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3319 /* Assume that at least one binding will be changed */
3320 FLUSH_VERTICES(ctx
, 0);
3321 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3324 /* The ARB_multi_bind spec says:
3326 * "If <buffers> is NULL, all bindings from <first> through
3327 * <first>+<count>-1 are reset to their unbound (zero) state.
3328 * In this case, the offsets and sizes associated with the
3329 * binding points are set to default values, ignoring
3330 * <offsets> and <sizes>."
3332 unbind_shader_storage_buffers(ctx
, first
, count
);
3336 /* Note that the error semantics for multi-bind commands differ from
3337 * those of other GL commands.
3339 * The Issues section in the ARB_multi_bind spec says:
3341 * "(11) Typically, OpenGL specifies that if an error is generated by a
3342 * command, that command has no effect. This is somewhat
3343 * unfortunate for multi-bind commands, because it would require a
3344 * first pass to scan the entire list of bound objects for errors
3345 * and then a second pass to actually perform the bindings.
3346 * Should we have different error semantics?
3348 * RESOLVED: Yes. In this specification, when the parameters for
3349 * one of the <count> binding points are invalid, that binding point
3350 * is not updated and an error will be generated. However, other
3351 * binding points in the same command will be updated if their
3352 * parameters are valid and no other error occurs."
3355 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3357 for (i
= 0; i
< count
; i
++) {
3358 struct gl_shader_storage_buffer_binding
*binding
=
3359 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3360 struct gl_buffer_object
*bufObj
;
3361 GLintptr offset
= 0;
3362 GLsizeiptr size
= 0;
3365 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3368 /* The ARB_multi_bind spec says:
3370 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3371 * pair of values in <offsets> and <sizes> does not respectively
3372 * satisfy the constraints described for those parameters for the
3373 * specified target, as described in section 6.7.1 (per binding)."
3375 * Section 6.7.1 refers to table 6.5, which says:
3377 * "┌───────────────────────────────────────────────────────────────┐
3378 * │ Shader storage buffer array bindings (see sec. 7.8) │
3379 * ├─────────────────────┬─────────────────────────────────────────┤
3381 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3382 * │ │ BUFFER_OFFSET_ALIGNMENT │
3384 * │ size restriction │ none │
3385 * └─────────────────────┴─────────────────────────────────────────┘"
3387 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3388 _mesa_error(ctx
, GL_INVALID_VALUE
,
3389 "glBindBuffersRange(offsets[%u]=%" PRId64
3390 " is misaligned; it must be a multiple of the value of "
3391 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3392 "target=GL_SHADER_STORAGE_BUFFER)",
3393 i
, (int64_t) offsets
[i
],
3394 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3398 offset
= offsets
[i
];
3402 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3403 bufObj
= binding
->BufferObject
;
3405 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3408 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3409 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3411 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3415 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3419 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3420 struct gl_transform_feedback_object
*tfObj
,
3421 GLuint first
, GLsizei count
, const char *caller
)
3423 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3424 _mesa_error(ctx
, GL_INVALID_ENUM
,
3425 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3429 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3431 * "An INVALID_OPERATION error is generated :
3434 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3435 * FEEDBACK_BUFFER and transform feedback is currently active."
3437 * We assume that this is also meant to apply to BindBuffersRange
3438 * and BindBuffersBase.
3440 if (tfObj
->Active
) {
3441 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3442 "%s(Changing transform feedback buffers while "
3443 "transform feedback is active)", caller
);
3447 /* The ARB_multi_bind_spec says:
3449 * "An INVALID_OPERATION error is generated if <first> + <count> is
3450 * greater than the number of target-specific indexed binding points,
3451 * as described in section 6.7.1."
3453 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3454 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3455 "%s(first=%u + count=%d > the value of "
3456 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3457 caller
, first
, count
,
3458 ctx
->Const
.MaxTransformFeedbackBuffers
);
3466 * Unbind all transform feedback buffers in the range
3467 * <first> through <first>+<count>-1
3470 unbind_xfb_buffers(struct gl_context
*ctx
,
3471 struct gl_transform_feedback_object
*tfObj
,
3472 GLuint first
, GLsizei count
)
3474 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3477 for (i
= 0; i
< count
; i
++)
3478 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3483 bind_xfb_buffers(struct gl_context
*ctx
,
3484 GLuint first
, GLsizei count
,
3485 const GLuint
*buffers
,
3487 const GLintptr
*offsets
,
3488 const GLsizeiptr
*sizes
,
3491 struct gl_transform_feedback_object
*tfObj
=
3492 ctx
->TransformFeedback
.CurrentObject
;
3495 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3498 /* Assume that at least one binding will be changed */
3499 FLUSH_VERTICES(ctx
, 0);
3500 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3503 /* The ARB_multi_bind spec says:
3505 * "If <buffers> is NULL, all bindings from <first> through
3506 * <first>+<count>-1 are reset to their unbound (zero) state.
3507 * In this case, the offsets and sizes associated with the
3508 * binding points are set to default values, ignoring
3509 * <offsets> and <sizes>."
3511 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3515 /* Note that the error semantics for multi-bind commands differ from
3516 * those of other GL commands.
3518 * The Issues section in the ARB_multi_bind spec says:
3520 * "(11) Typically, OpenGL specifies that if an error is generated by a
3521 * command, that command has no effect. This is somewhat
3522 * unfortunate for multi-bind commands, because it would require a
3523 * first pass to scan the entire list of bound objects for errors
3524 * and then a second pass to actually perform the bindings.
3525 * Should we have different error semantics?
3527 * RESOLVED: Yes. In this specification, when the parameters for
3528 * one of the <count> binding points are invalid, that binding point
3529 * is not updated and an error will be generated. However, other
3530 * binding points in the same command will be updated if their
3531 * parameters are valid and no other error occurs."
3534 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3536 for (i
= 0; i
< count
; i
++) {
3537 const GLuint index
= first
+ i
;
3538 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3539 struct gl_buffer_object
*bufObj
;
3540 GLintptr offset
= 0;
3541 GLsizeiptr size
= 0;
3544 offset
= offsets
[i
];
3547 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3550 /* The ARB_multi_bind spec says:
3552 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3553 * pair of values in <offsets> and <sizes> does not respectively
3554 * satisfy the constraints described for those parameters for the
3555 * specified target, as described in section 6.7.1 (per binding)."
3557 * Section 6.7.1 refers to table 6.5, which says:
3559 * "┌───────────────────────────────────────────────────────────────┐
3560 * │ Transform feedback array bindings (see sec. 13.2.2) │
3561 * ├───────────────────────┬───────────────────────────────────────┤
3563 * │ offset restriction │ multiple of 4 │
3565 * │ size restriction │ multiple of 4 │
3566 * └───────────────────────┴───────────────────────────────────────┘"
3568 if (offsets
[i
] & 0x3) {
3569 _mesa_error(ctx
, GL_INVALID_VALUE
,
3570 "glBindBuffersRange(offsets[%u]=%" PRId64
3571 " is misaligned; it must be a multiple of 4 when "
3572 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3573 i
, (int64_t) offsets
[i
]);
3577 if (sizes
[i
] & 0x3) {
3578 _mesa_error(ctx
, GL_INVALID_VALUE
,
3579 "glBindBuffersRange(sizes[%u]=%" PRId64
3580 " is misaligned; it must be a multiple of 4 when "
3581 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3582 i
, (int64_t) sizes
[i
]);
3586 offset
= offsets
[i
];
3590 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3591 bufObj
= boundBufObj
;
3593 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3596 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3600 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3604 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3605 GLuint first
, GLsizei count
,
3608 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3609 _mesa_error(ctx
, GL_INVALID_ENUM
,
3610 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3614 /* The ARB_multi_bind_spec says:
3616 * "An INVALID_OPERATION error is generated if <first> + <count> is
3617 * greater than the number of target-specific indexed binding points,
3618 * as described in section 6.7.1."
3620 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3621 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3622 "%s(first=%u + count=%d > the value of "
3623 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3624 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3632 * Unbind all atomic counter buffers in the range
3633 * <first> through <first>+<count>-1
3636 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3638 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3641 for (i
= 0; i
< count
; i
++)
3642 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3647 bind_atomic_buffers(struct gl_context
*ctx
,
3650 const GLuint
*buffers
,
3652 const GLintptr
*offsets
,
3653 const GLsizeiptr
*sizes
,
3658 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3661 /* Assume that at least one binding will be changed */
3662 FLUSH_VERTICES(ctx
, 0);
3663 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3666 /* The ARB_multi_bind spec says:
3668 * "If <buffers> is NULL, all bindings from <first> through
3669 * <first>+<count>-1 are reset to their unbound (zero) state.
3670 * In this case, the offsets and sizes associated with the
3671 * binding points are set to default values, ignoring
3672 * <offsets> and <sizes>."
3674 unbind_atomic_buffers(ctx
, first
, count
);
3678 /* Note that the error semantics for multi-bind commands differ from
3679 * those of other GL commands.
3681 * The Issues section in the ARB_multi_bind spec says:
3683 * "(11) Typically, OpenGL specifies that if an error is generated by a
3684 * command, that command has no effect. This is somewhat
3685 * unfortunate for multi-bind commands, because it would require a
3686 * first pass to scan the entire list of bound objects for errors
3687 * and then a second pass to actually perform the bindings.
3688 * Should we have different error semantics?
3690 * RESOLVED: Yes. In this specification, when the parameters for
3691 * one of the <count> binding points are invalid, that binding point
3692 * is not updated and an error will be generated. However, other
3693 * binding points in the same command will be updated if their
3694 * parameters are valid and no other error occurs."
3697 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3699 for (i
= 0; i
< count
; i
++) {
3700 struct gl_atomic_buffer_binding
*binding
=
3701 &ctx
->AtomicBufferBindings
[first
+ i
];
3702 struct gl_buffer_object
*bufObj
;
3703 GLintptr offset
= 0;
3704 GLsizeiptr size
= 0;
3707 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3710 /* The ARB_multi_bind spec says:
3712 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3713 * pair of values in <offsets> and <sizes> does not respectively
3714 * satisfy the constraints described for those parameters for the
3715 * specified target, as described in section 6.7.1 (per binding)."
3717 * Section 6.7.1 refers to table 6.5, which says:
3719 * "┌───────────────────────────────────────────────────────────────┐
3720 * │ Atomic counter array bindings (see sec. 7.7.2) │
3721 * ├───────────────────────┬───────────────────────────────────────┤
3723 * │ offset restriction │ multiple of 4 │
3725 * │ size restriction │ none │
3726 * └───────────────────────┴───────────────────────────────────────┘"
3728 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3729 _mesa_error(ctx
, GL_INVALID_VALUE
,
3730 "glBindBuffersRange(offsets[%u]=%" PRId64
3731 " is misaligned; it must be a multiple of %d when "
3732 "target=GL_ATOMIC_COUNTER_BUFFER)",
3733 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3737 offset
= offsets
[i
];
3741 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3742 bufObj
= binding
->BufferObject
;
3744 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3747 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3750 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3754 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3755 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3757 GET_CURRENT_CONTEXT(ctx
);
3758 struct gl_buffer_object
*bufObj
;
3760 if (MESA_VERBOSE
& VERBOSE_API
) {
3761 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
3762 _mesa_enum_to_string(target
), index
, buffer
,
3763 (unsigned long) offset
, (unsigned long) size
);
3767 bufObj
= ctx
->Shared
->NullBufferObj
;
3769 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3771 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3772 &bufObj
, "glBindBufferRange"))
3776 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3777 "glBindBufferRange(invalid buffer=%u)", buffer
);
3783 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3790 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3791 _mesa_bind_buffer_range_transform_feedback(ctx
,
3792 ctx
->TransformFeedback
.CurrentObject
,
3793 index
, bufObj
, offset
, size
,
3796 case GL_UNIFORM_BUFFER
:
3797 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3799 case GL_SHADER_STORAGE_BUFFER
:
3800 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3802 case GL_ATOMIC_COUNTER_BUFFER
:
3803 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3804 "glBindBufferRange");
3807 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
3813 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
3815 GET_CURRENT_CONTEXT(ctx
);
3816 struct gl_buffer_object
*bufObj
;
3818 if (MESA_VERBOSE
& VERBOSE_API
) {
3819 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
3820 _mesa_enum_to_string(target
), index
, buffer
);
3824 bufObj
= ctx
->Shared
->NullBufferObj
;
3826 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3828 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3829 &bufObj
, "glBindBufferBase"))
3833 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3834 "glBindBufferBase(invalid buffer=%u)", buffer
);
3838 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
3839 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
3841 * "BindBufferBase is equivalent to calling BindBufferRange with offset
3842 * zero and size equal to the size of buffer."
3844 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
3846 * "If the parameter (starting offset or size) was not specified when the
3847 * buffer object was bound, zero is returned."
3849 * What happens if the size of the buffer changes? Does the size of the
3850 * buffer at the moment glBindBufferBase was called still play a role, like
3851 * the first quote would imply, or is the size meaningless in the
3852 * glBindBufferBase case like the second quote would suggest? The GL 4.1
3853 * core spec page 45 says:
3855 * "It is equivalent to calling BindBufferRange with offset zero, while
3856 * size is determined by the size of the bound buffer at the time the
3859 * My interpretation is that the GL 4.1 spec was a clarification of the
3860 * behavior, not a change. In particular, this choice will only make
3861 * rendering work in cases where it would have had undefined results.
3865 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3866 _mesa_bind_buffer_base_transform_feedback(ctx
,
3867 ctx
->TransformFeedback
.CurrentObject
,
3868 index
, bufObj
, false);
3870 case GL_UNIFORM_BUFFER
:
3871 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
3873 case GL_SHADER_STORAGE_BUFFER
:
3874 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
3876 case GL_ATOMIC_COUNTER_BUFFER
:
3877 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
3878 "glBindBufferBase");
3881 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
3887 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
3888 const GLuint
*buffers
,
3889 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
3891 GET_CURRENT_CONTEXT(ctx
);
3893 if (MESA_VERBOSE
& VERBOSE_API
) {
3894 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
3895 _mesa_enum_to_string(target
), first
, count
,
3896 buffers
, offsets
, sizes
);
3900 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3901 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3902 "glBindBuffersRange");
3904 case GL_UNIFORM_BUFFER
:
3905 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3906 "glBindBuffersRange");
3908 case GL_SHADER_STORAGE_BUFFER
:
3909 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3910 "glBindBuffersRange");
3912 case GL_ATOMIC_COUNTER_BUFFER
:
3913 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3914 "glBindBuffersRange");
3917 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
3918 _mesa_enum_to_string(target
));
3924 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
3925 const GLuint
*buffers
)
3927 GET_CURRENT_CONTEXT(ctx
);
3929 if (MESA_VERBOSE
& VERBOSE_API
) {
3930 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
3931 _mesa_enum_to_string(target
), first
, count
, buffers
);
3935 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3936 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3937 "glBindBuffersBase");
3939 case GL_UNIFORM_BUFFER
:
3940 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3941 "glBindBuffersBase");
3943 case GL_SHADER_STORAGE_BUFFER
:
3944 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3945 "glBindBuffersBase");
3947 case GL_ATOMIC_COUNTER_BUFFER
:
3948 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3949 "glBindBuffersBase");
3952 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
3953 _mesa_enum_to_string(target
));
3959 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
3962 GET_CURRENT_CONTEXT(ctx
);
3963 struct gl_buffer_object
*bufObj
;
3964 const GLintptr end
= offset
+ length
;
3966 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
3967 * Profile) spec says:
3969 * "An INVALID_VALUE error is generated if buffer is zero or is not the
3970 * name of an existing buffer object."
3972 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3973 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
3974 _mesa_error(ctx
, GL_INVALID_VALUE
,
3975 "glInvalidateBufferSubData(name = %u) invalid object",
3980 /* The GL_ARB_invalidate_subdata spec says:
3982 * "An INVALID_VALUE error is generated if <offset> or <length> is
3983 * negative, or if <offset> + <length> is greater than the value of
3986 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
3987 _mesa_error(ctx
, GL_INVALID_VALUE
,
3988 "glInvalidateBufferSubData(invalid offset or length)");
3992 /* The OpenGL 4.4 (Core Profile) spec says:
3994 * "An INVALID_OPERATION error is generated if buffer is currently
3995 * mapped by MapBuffer or if the invalidate range intersects the range
3996 * currently mapped by MapBufferRange, unless it was mapped
3997 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
3999 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4000 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4001 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4002 "glInvalidateBufferSubData(intersection with mapped "
4007 if (ctx
->Driver
.InvalidateBufferSubData
)
4008 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4012 _mesa_InvalidateBufferData(GLuint buffer
)
4014 GET_CURRENT_CONTEXT(ctx
);
4015 struct gl_buffer_object
*bufObj
;
4017 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4018 * Profile) spec says:
4020 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4021 * name of an existing buffer object."
4023 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4024 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4025 _mesa_error(ctx
, GL_INVALID_VALUE
,
4026 "glInvalidateBufferData(name = %u) invalid object",
4031 /* The OpenGL 4.4 (Core Profile) spec says:
4033 * "An INVALID_OPERATION error is generated if buffer is currently
4034 * mapped by MapBuffer or if the invalidate range intersects the range
4035 * currently mapped by MapBufferRange, unless it was mapped
4036 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4038 if (_mesa_check_disallowed_mapping(bufObj
)) {
4039 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4040 "glInvalidateBufferData(intersection with mapped "
4045 if (ctx
->Driver
.InvalidateBufferSubData
)
4046 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, 0, bufObj
->Size
);
4050 buffer_page_commitment(struct gl_context
*ctx
,
4051 struct gl_buffer_object
*bufferObj
,
4052 GLintptr offset
, GLsizeiptr size
,
4053 GLboolean commit
, const char *func
)
4055 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4056 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4061 if (size
< 0 || size
> bufferObj
->Size
||
4062 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4063 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4068 /* The GL_ARB_sparse_buffer extension specification says:
4070 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4071 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4072 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4073 * not extend to the end of the buffer's data store."
4075 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4076 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4081 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4082 offset
+ size
!= bufferObj
->Size
) {
4083 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4088 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4092 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4095 GET_CURRENT_CONTEXT(ctx
);
4096 struct gl_buffer_object
*bufferObj
;
4098 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4103 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4104 "glBufferPageCommitmentARB");
4108 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4109 GLsizeiptr size
, GLboolean commit
)
4111 GET_CURRENT_CONTEXT(ctx
);
4112 struct gl_buffer_object
*bufferObj
;
4114 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4115 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4116 /* Note: the extension spec is not clear about the excpected error value. */
4117 _mesa_error(ctx
, GL_INVALID_VALUE
,
4118 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4123 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4124 "glNamedBufferPageCommitmentARB");