2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
34 #include <inttypes.h> /* for PRId64 macro */
35 #include "util/debug.h"
41 #include "bufferobj.h"
44 #include "glformats.h"
46 #include "transformfeedback.h"
52 /*#define BOUNDS_CHECK*/
56 * We count the number of buffer modification calls to check for
57 * inefficient buffer use. This is the number of such calls before we
60 #define BUFFER_WARNING_CALL_COUNT 4
64 * Helper to warn of possible performance issues, such as frequently
65 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
69 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
74 _mesa_gl_vdebug(ctx
, id
,
75 MESA_DEBUG_SOURCE_API
,
76 MESA_DEBUG_TYPE_PERFORMANCE
,
77 MESA_DEBUG_SEVERITY_MEDIUM
,
82 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
84 static GLuint id = 0; \
85 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
90 * Used as a placeholder for buffer objects between glGenBuffers() and
91 * glBindBuffer() so that glIsBuffer() can work correctly.
93 static struct gl_buffer_object DummyBufferObject
;
97 * Return pointer to address of a buffer object target.
98 * \param ctx the GL context
99 * \param target the buffer object target to be retrieved.
100 * \return pointer to pointer to the buffer object bound to \c target in the
101 * specified context or \c NULL if \c target is invalid.
103 static inline struct gl_buffer_object
**
104 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
106 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
108 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
109 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
113 case GL_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.ArrayBufferObj
;
115 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
116 return &ctx
->Array
.VAO
->IndexBufferObj
;
117 case GL_PIXEL_PACK_BUFFER_EXT
:
118 return &ctx
->Pack
.BufferObj
;
119 case GL_PIXEL_UNPACK_BUFFER_EXT
:
120 return &ctx
->Unpack
.BufferObj
;
121 case GL_COPY_READ_BUFFER
:
122 return &ctx
->CopyReadBuffer
;
123 case GL_COPY_WRITE_BUFFER
:
124 return &ctx
->CopyWriteBuffer
;
125 case GL_QUERY_BUFFER
:
126 if (_mesa_has_ARB_query_buffer_object(ctx
))
127 return &ctx
->QueryBuffer
;
129 case GL_DRAW_INDIRECT_BUFFER
:
130 if ((ctx
->API
== API_OPENGL_CORE
&&
131 ctx
->Extensions
.ARB_draw_indirect
) ||
132 _mesa_is_gles31(ctx
)) {
133 return &ctx
->DrawIndirectBuffer
;
136 case GL_PARAMETER_BUFFER_ARB
:
137 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
138 return &ctx
->ParameterBuffer
;
141 case GL_DISPATCH_INDIRECT_BUFFER
:
142 if (_mesa_has_compute_shaders(ctx
)) {
143 return &ctx
->DispatchIndirectBuffer
;
146 case GL_TRANSFORM_FEEDBACK_BUFFER
:
147 if (ctx
->Extensions
.EXT_transform_feedback
) {
148 return &ctx
->TransformFeedback
.CurrentBuffer
;
151 case GL_TEXTURE_BUFFER
:
152 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
153 _mesa_has_OES_texture_buffer(ctx
)) {
154 return &ctx
->Texture
.BufferObject
;
157 case GL_UNIFORM_BUFFER
:
158 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
159 return &ctx
->UniformBuffer
;
162 case GL_SHADER_STORAGE_BUFFER
:
163 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
164 return &ctx
->ShaderStorageBuffer
;
167 case GL_ATOMIC_COUNTER_BUFFER
:
168 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
169 return &ctx
->AtomicBuffer
;
172 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
173 if (ctx
->Extensions
.AMD_pinned_memory
) {
174 return &ctx
->ExternalVirtualMemoryBuffer
;
185 * Get the buffer object bound to the specified target in a GL context.
186 * \param ctx the GL context
187 * \param target the buffer object target to be retrieved.
188 * \param error the GL error to record if target is illegal.
189 * \return pointer to the buffer object bound to \c target in the
190 * specified context or \c NULL if \c target is invalid.
192 static inline struct gl_buffer_object
*
193 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
196 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
199 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
203 if (!_mesa_is_bufferobj(*bufObj
)) {
204 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
213 * Convert a GLbitfield describing the mapped buffer access flags
214 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
217 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
219 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
220 if ((access
& rwFlags
) == rwFlags
)
221 return GL_READ_WRITE
;
222 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
224 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
225 return GL_WRITE_ONLY
;
227 /* Otherwise, AccessFlags is zero (the default state).
229 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
231 * Name Type Initial Value Legal Values
233 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
236 * However, table 6.8 in the GL_OES_mapbuffer extension says:
238 * Get Value Type Get Command Value Description
239 * --------- ---- ----------- ----- -----------
240 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
242 * The difference is because GL_OES_mapbuffer only supports mapping buffers
247 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
252 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
254 * The regions do not overlap if and only if the end of the given
255 * region is before the mapped region or the start of the given region
256 * is after the mapped region.
258 * \param obj Buffer object target on which to operate.
259 * \param offset Offset of the first byte of the subdata range.
260 * \param size Size, in bytes, of the subdata range.
261 * \return true if ranges overlap, false otherwise
265 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
266 GLintptr offset
, GLsizeiptr size
)
268 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
269 const GLintptr end
= offset
+ size
;
270 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
271 obj
->Mappings
[MAP_USER
].Length
;
273 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
282 * Tests the subdata range parameters and sets the GL error code for
283 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
284 * \c glClearBufferSubData.
286 * \param ctx GL context.
287 * \param bufObj The buffer object.
288 * \param offset Offset of the first byte of the subdata range.
289 * \param size Size, in bytes, of the subdata range.
290 * \param mappedRange If true, checks if an overlapping range is mapped.
291 * If false, checks if buffer is mapped.
292 * \param caller Name of calling function for recording errors.
293 * \return false if error, true otherwise
295 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
298 buffer_object_subdata_range_good(struct gl_context
*ctx
,
299 const struct gl_buffer_object
*bufObj
,
300 GLintptr offset
, GLsizeiptr size
,
301 bool mappedRange
, const char *caller
)
304 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
309 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
313 if (offset
+ size
> bufObj
->Size
) {
314 _mesa_error(ctx
, GL_INVALID_VALUE
,
315 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
316 (unsigned long) offset
,
317 (unsigned long) size
,
318 (unsigned long) bufObj
->Size
);
322 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
326 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
328 "%s(range is mapped without persistent bit)",
334 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(buffer is mapped without persistent bit)",
347 * Test the format and type parameters and set the GL error code for
348 * \c glClearBufferData and \c glClearBufferSubData.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is to be converted.
352 * \param format Format of the supplied data.
353 * \param type Type of the supplied data.
354 * \param caller Name of calling function for recording errors.
355 * \return If internalformat, format and type are legal the mesa_format
356 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
358 * \sa glClearBufferData and glClearBufferSubData
361 validate_clear_buffer_format(struct gl_context
*ctx
,
362 GLenum internalformat
,
363 GLenum format
, GLenum type
,
366 mesa_format mesaFormat
;
367 GLenum errorFormatType
;
369 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
370 if (mesaFormat
== MESA_FORMAT_NONE
) {
371 _mesa_error(ctx
, GL_INVALID_ENUM
,
372 "%s(invalid internalformat)", caller
);
373 return MESA_FORMAT_NONE
;
376 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
377 * EXT_texture_integer there is no conversion between integer and
378 * non-integer formats
380 if (_mesa_is_enum_format_signed_int(format
) !=
381 _mesa_is_format_integer_color(mesaFormat
)) {
382 _mesa_error(ctx
, GL_INVALID_OPERATION
,
383 "%s(integer vs non-integer)", caller
);
384 return MESA_FORMAT_NONE
;
387 if (!_mesa_is_color_format(format
)) {
388 _mesa_error(ctx
, GL_INVALID_ENUM
,
389 "%s(format is not a color format)", caller
);
390 return MESA_FORMAT_NONE
;
393 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
394 if (errorFormatType
!= GL_NO_ERROR
) {
395 _mesa_error(ctx
, GL_INVALID_ENUM
,
396 "%s(invalid format or type)", caller
);
397 return MESA_FORMAT_NONE
;
405 * Convert user-specified clear value to the specified internal format.
407 * \param ctx GL context.
408 * \param internalformat Format to which the data is converted.
409 * \param clearValue Points to the converted clear value.
410 * \param format Format of the supplied data.
411 * \param type Type of the supplied data.
412 * \param data Data which is to be converted to internalformat.
413 * \param caller Name of calling function for recording errors.
414 * \return true if data could be converted, false otherwise.
416 * \sa glClearBufferData, glClearBufferSubData
419 convert_clear_buffer_data(struct gl_context
*ctx
,
420 mesa_format internalformat
,
421 GLubyte
*clearValue
, GLenum format
, GLenum type
,
422 const GLvoid
*data
, const char *caller
)
424 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
426 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
427 0, &clearValue
, 1, 1, 1,
428 format
, type
, data
, &ctx
->Unpack
)) {
432 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
439 * Allocate and initialize a new buffer object.
441 * Default callback for the \c dd_function_table::NewBufferObject() hook.
443 static struct gl_buffer_object
*
444 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
446 struct gl_buffer_object
*obj
;
450 obj
= MALLOC_STRUCT(gl_buffer_object
);
451 _mesa_initialize_buffer_object(ctx
, obj
, name
);
457 * Delete a buffer object.
459 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
462 _mesa_delete_buffer_object(struct gl_context
*ctx
,
463 struct gl_buffer_object
*bufObj
)
467 vbo_delete_minmax_cache(bufObj
);
468 _mesa_align_free(bufObj
->Data
);
470 /* assign strange values here to help w/ debugging */
471 bufObj
->RefCount
= -1000;
474 mtx_destroy(&bufObj
->Mutex
);
482 * Set ptr to bufObj w/ reference counting.
483 * This is normally only called from the _mesa_reference_buffer_object() macro
484 * when there's a real pointer change.
487 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
488 struct gl_buffer_object
**ptr
,
489 struct gl_buffer_object
*bufObj
)
492 /* Unreference the old buffer */
493 GLboolean deleteFlag
= GL_FALSE
;
494 struct gl_buffer_object
*oldObj
= *ptr
;
496 mtx_lock(&oldObj
->Mutex
);
497 assert(oldObj
->RefCount
> 0);
499 deleteFlag
= (oldObj
->RefCount
== 0);
500 mtx_unlock(&oldObj
->Mutex
);
503 assert(ctx
->Driver
.DeleteBuffer
);
504 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
512 /* reference new buffer */
513 mtx_lock(&bufObj
->Mutex
);
514 assert(bufObj
->RefCount
> 0);
518 mtx_unlock(&bufObj
->Mutex
);
524 * Get the value of MESA_NO_MINMAX_CACHE.
527 get_no_minmax_cache()
529 static bool read
= false;
530 static bool disable
= false;
533 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
542 * Initialize a buffer object to default values.
545 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
546 struct gl_buffer_object
*obj
,
549 memset(obj
, 0, sizeof(struct gl_buffer_object
));
550 mtx_init(&obj
->Mutex
, mtx_plain
);
553 obj
->Usage
= GL_STATIC_DRAW_ARB
;
555 if (get_no_minmax_cache())
556 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
562 * Callback called from _mesa_HashWalk()
565 count_buffer_size(GLuint key
, void *data
, void *userData
)
567 const struct gl_buffer_object
*bufObj
=
568 (const struct gl_buffer_object
*) data
;
569 GLuint
*total
= (GLuint
*) userData
;
572 *total
= *total
+ bufObj
->Size
;
577 * Compute total size (in bytes) of all buffer objects for the given context.
578 * For debugging purposes.
581 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
585 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
592 * Allocate space for and store data in a buffer object. Any data that was
593 * previously stored in the buffer object is lost. If \c data is \c NULL,
594 * memory will be allocated, but no copy will occur.
596 * This is the default callback for \c dd_function_table::BufferData()
597 * Note that all GL error checking will have been done already.
599 * \param ctx GL context.
600 * \param target Buffer object target on which to operate.
601 * \param size Size, in bytes, of the new data store.
602 * \param data Pointer to the data to store in the buffer object. This
603 * pointer may be \c NULL.
604 * \param usage Hints about how the data will be used.
605 * \param bufObj Object to be used.
607 * \return GL_TRUE for success, GL_FALSE for failure
608 * \sa glBufferDataARB, dd_function_table::BufferData.
611 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
612 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
613 struct gl_buffer_object
*bufObj
)
619 _mesa_align_free( bufObj
->Data
);
621 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
623 bufObj
->Data
= (GLubyte
*) new_data
;
625 bufObj
->Usage
= usage
;
626 bufObj
->StorageFlags
= storageFlags
;
629 memcpy( bufObj
->Data
, data
, size
);
641 * Replace data in a subrange of buffer object. If the data range
642 * specified by \c size + \c offset extends beyond the end of the buffer or
643 * if \c data is \c NULL, no copy is performed.
645 * This is the default callback for \c dd_function_table::BufferSubData()
646 * Note that all GL error checking will have been done already.
648 * \param ctx GL context.
649 * \param offset Offset of the first byte to be modified.
650 * \param size Size, in bytes, of the data range.
651 * \param data Pointer to the data to store in the buffer object.
652 * \param bufObj Object to be used.
654 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
657 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
658 GLsizeiptr size
, const GLvoid
*data
,
659 struct gl_buffer_object
*bufObj
)
663 /* this should have been caught in _mesa_BufferSubData() */
664 assert(size
+ offset
<= bufObj
->Size
);
667 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
673 * Retrieve data from a subrange of buffer object. If the data range
674 * specified by \c size + \c offset extends beyond the end of the buffer or
675 * if \c data is \c NULL, no copy is performed.
677 * This is the default callback for \c dd_function_table::GetBufferSubData()
678 * Note that all GL error checking will have been done already.
680 * \param ctx GL context.
681 * \param target Buffer object target on which to operate.
682 * \param offset Offset of the first byte to be fetched.
683 * \param size Size, in bytes, of the data range.
684 * \param data Destination for data
685 * \param bufObj Object to be used.
687 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
690 buffer_get_subdata(struct gl_context
*ctx
, GLintptrARB offset
,
691 GLsizeiptrARB size
, GLvoid
*data
,
692 struct gl_buffer_object
*bufObj
)
696 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
697 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
703 * Clear a subrange of the buffer object with copies of the supplied data.
704 * If data is NULL the buffer is filled with zeros.
706 * This is the default callback for \c dd_function_table::ClearBufferSubData()
707 * Note that all GL error checking will have been done already.
709 * \param ctx GL context.
710 * \param offset Offset of the first byte to be cleared.
711 * \param size Size, in bytes, of the to be cleared range.
712 * \param clearValue Source of the data.
713 * \param clearValueSize Size, in bytes, of the supplied data.
714 * \param bufObj Object to be cleared.
716 * \sa glClearBufferSubData, glClearBufferData and
717 * dd_function_table::ClearBufferSubData.
720 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
721 GLintptr offset
, GLsizeiptr size
,
722 const GLvoid
*clearValue
,
723 GLsizeiptr clearValueSize
,
724 struct gl_buffer_object
*bufObj
)
729 assert(ctx
->Driver
.MapBufferRange
);
730 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
732 GL_MAP_INVALIDATE_RANGE_BIT
,
733 bufObj
, MAP_INTERNAL
);
736 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
740 if (clearValue
== NULL
) {
741 /* Clear with zeros, per the spec */
742 memset(dest
, 0, size
);
743 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
747 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
748 memcpy(dest
, clearValue
, clearValueSize
);
749 dest
+= clearValueSize
;
752 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
757 * Default fallback for \c dd_function_table::MapBufferRange().
758 * Called via glMapBufferRange().
761 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
762 GLsizeiptr length
, GLbitfield access
,
763 struct gl_buffer_object
*bufObj
,
764 gl_map_buffer_index index
)
767 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
768 /* Just return a direct pointer to the data */
769 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
770 bufObj
->Mappings
[index
].Length
= length
;
771 bufObj
->Mappings
[index
].Offset
= offset
;
772 bufObj
->Mappings
[index
].AccessFlags
= access
;
773 return bufObj
->Mappings
[index
].Pointer
;
778 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
779 * Called via glFlushMappedBufferRange().
782 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
783 GLintptr offset
, GLsizeiptr length
,
784 struct gl_buffer_object
*obj
,
785 gl_map_buffer_index index
)
797 * Default callback for \c dd_function_table::UnmapBuffer().
799 * The input parameters will have been already tested for errors.
801 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
804 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
805 gl_map_buffer_index index
)
808 /* XXX we might assert here that bufObj->Pointer is non-null */
809 bufObj
->Mappings
[index
].Pointer
= NULL
;
810 bufObj
->Mappings
[index
].Length
= 0;
811 bufObj
->Mappings
[index
].Offset
= 0;
812 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
818 * Default fallback for \c dd_function_table::CopyBufferSubData().
819 * Called via glCopyBufferSubData().
822 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
823 struct gl_buffer_object
*src
,
824 struct gl_buffer_object
*dst
,
825 GLintptr readOffset
, GLintptr writeOffset
,
828 GLubyte
*srcPtr
, *dstPtr
;
831 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
833 GL_MAP_WRITE_BIT
, src
,
839 srcPtr
+= readOffset
;
840 dstPtr
+= writeOffset
;
842 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
843 GL_MAP_READ_BIT
, src
,
845 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
847 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
851 /* Note: the src and dst regions will never overlap. Trying to do so
852 * would generate GL_INVALID_VALUE earlier.
854 if (srcPtr
&& dstPtr
)
855 memcpy(dstPtr
, srcPtr
, size
);
857 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
859 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
865 * Initialize the state associated with buffer objects
868 _mesa_init_buffer_objects( struct gl_context
*ctx
)
872 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
873 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
874 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
876 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
877 ctx
->Shared
->NullBufferObj
);
879 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
880 ctx
->Shared
->NullBufferObj
);
881 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
882 ctx
->Shared
->NullBufferObj
);
884 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
885 ctx
->Shared
->NullBufferObj
);
887 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
888 ctx
->Shared
->NullBufferObj
);
890 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
891 ctx
->Shared
->NullBufferObj
);
893 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
894 ctx
->Shared
->NullBufferObj
);
896 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
897 ctx
->Shared
->NullBufferObj
);
899 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
900 ctx
->Shared
->NullBufferObj
);
902 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
903 ctx
->Shared
->NullBufferObj
);
905 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
906 _mesa_reference_buffer_object(ctx
,
907 &ctx
->UniformBufferBindings
[i
].BufferObject
,
908 ctx
->Shared
->NullBufferObj
);
909 ctx
->UniformBufferBindings
[i
].Offset
= -1;
910 ctx
->UniformBufferBindings
[i
].Size
= -1;
913 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
914 _mesa_reference_buffer_object(ctx
,
915 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
916 ctx
->Shared
->NullBufferObj
);
917 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
918 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
921 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
922 _mesa_reference_buffer_object(ctx
,
923 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
924 ctx
->Shared
->NullBufferObj
);
925 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
926 ctx
->AtomicBufferBindings
[i
].Size
= 0;
932 _mesa_free_buffer_objects( struct gl_context
*ctx
)
936 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
938 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
939 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
941 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
943 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
945 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
947 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
949 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
951 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
953 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
955 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
956 _mesa_reference_buffer_object(ctx
,
957 &ctx
->UniformBufferBindings
[i
].BufferObject
,
961 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
962 _mesa_reference_buffer_object(ctx
,
963 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
967 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
968 _mesa_reference_buffer_object(ctx
,
969 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
976 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
978 struct gl_buffer_object
**buf_handle
,
981 struct gl_buffer_object
*buf
= *buf_handle
;
983 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
984 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
988 if (!buf
|| buf
== &DummyBufferObject
) {
989 /* If this is a new buffer object id, or one which was generated but
990 * never used before, allocate a buffer object now.
992 assert(ctx
->Driver
.NewBufferObject
);
993 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
995 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
998 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1006 * Bind the specified target to buffer for the specified context.
1007 * Called by glBindBuffer() and other functions.
1010 bind_buffer_object(struct gl_context
*ctx
,
1011 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1013 struct gl_buffer_object
*oldBufObj
;
1014 struct gl_buffer_object
*newBufObj
= NULL
;
1018 /* Get pointer to old buffer object (to be unbound) */
1019 oldBufObj
= *bindTarget
;
1020 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1021 return; /* rebinding the same buffer object- no change */
1024 * Get pointer to new buffer object (newBufObj)
1027 /* The spec says there's not a buffer object named 0, but we use
1028 * one internally because it simplifies things.
1030 newBufObj
= ctx
->Shared
->NullBufferObj
;
1033 /* non-default buffer object */
1034 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1035 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1036 &newBufObj
, "glBindBuffer"))
1040 /* record usage history */
1041 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1042 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1045 /* bind new buffer */
1046 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1051 * Update the default buffer objects in the given context to reference those
1052 * specified in the shared state and release those referencing the old
1056 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1058 /* Bind the NullBufferObj to remove references to those
1059 * in the shared context hash table.
1061 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1062 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1063 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1064 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1070 * Return the gl_buffer_object for the given ID.
1071 * Always return NULL for ID 0.
1073 struct gl_buffer_object
*
1074 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1079 return (struct gl_buffer_object
*)
1080 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1084 struct gl_buffer_object
*
1085 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1090 return (struct gl_buffer_object
*)
1091 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1095 * A convenience function for direct state access functions that throws
1096 * GL_INVALID_OPERATION if buffer is not the name of an existing
1099 struct gl_buffer_object
*
1100 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1103 struct gl_buffer_object
*bufObj
;
1105 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1106 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1107 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1108 "%s(non-existent buffer object %u)", caller
, buffer
);
1117 * Look up a buffer object for a multi-bind function.
1119 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1120 * of generating an error if the buffer ID is not zero or the name
1121 * of an existing buffer object.
1123 * If the buffer ID refers to an existing buffer object, a pointer
1124 * to the buffer object is returned. If the ID is zero, a pointer
1125 * to the shared NullBufferObj is returned. If the ID is not zero
1126 * and does not refer to a valid buffer object, this function
1129 * This function assumes that the caller has already locked the
1130 * hash table mutex by calling
1131 * _mesa_HashLockMutex(ctx->Shared->BufferObjects).
1133 struct gl_buffer_object
*
1134 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1135 const GLuint
*buffers
,
1136 GLuint index
, const char *caller
)
1138 struct gl_buffer_object
*bufObj
;
1140 if (buffers
[index
] != 0) {
1141 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1143 /* The multi-bind functions don't create the buffer objects
1144 when they don't exist. */
1145 if (bufObj
== &DummyBufferObject
)
1148 bufObj
= ctx
->Shared
->NullBufferObj
;
1151 /* The ARB_multi_bind spec says:
1153 * "An INVALID_OPERATION error is generated if any value
1154 * in <buffers> is not zero or the name of an existing
1155 * buffer object (per binding)."
1157 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1158 "%s(buffers[%u]=%u is not zero or the name "
1159 "of an existing buffer object)",
1160 caller
, index
, buffers
[index
]);
1168 * If *ptr points to obj, set ptr = the Null/default buffer object.
1169 * This is a helper for buffer object deletion.
1170 * The GL spec says that deleting a buffer object causes it to get
1171 * unbound from all arrays in the current context.
1174 unbind(struct gl_context
*ctx
,
1175 struct gl_vertex_array_object
*vao
, unsigned index
,
1176 struct gl_buffer_object
*obj
)
1178 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1179 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1180 vao
->BufferBinding
[index
].Offset
,
1181 vao
->BufferBinding
[index
].Stride
);
1187 * Plug default/fallback buffer object functions into the device
1191 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1193 /* GL_ARB_vertex/pixel_buffer_object */
1194 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1195 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1196 driver
->BufferData
= buffer_data_fallback
;
1197 driver
->BufferSubData
= buffer_sub_data_fallback
;
1198 driver
->GetBufferSubData
= buffer_get_subdata
;
1199 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1201 /* GL_ARB_clear_buffer_object */
1202 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1204 /* GL_ARB_map_buffer_range */
1205 driver
->MapBufferRange
= map_buffer_range_fallback
;
1206 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1208 /* GL_ARB_copy_buffer */
1209 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1214 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1215 struct gl_buffer_object
*bufObj
)
1217 for (int i
= 0; i
< MAP_COUNT
; i
++) {
1218 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1219 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1220 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1221 bufObj
->Mappings
[i
].AccessFlags
= 0;
1227 /**********************************************************************/
1229 /**********************************************************************/
1232 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1234 GET_CURRENT_CONTEXT(ctx
);
1236 if (MESA_VERBOSE
& VERBOSE_API
) {
1237 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1238 _mesa_enum_to_string(target
), buffer
);
1241 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1243 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1244 _mesa_enum_to_string(target
));
1248 bind_buffer_object(ctx
, bindTarget
, buffer
);
1253 * Delete a set of buffer objects.
1255 * \param n Number of buffer objects to delete.
1256 * \param ids Array of \c n buffer object IDs.
1259 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1261 GET_CURRENT_CONTEXT(ctx
);
1263 FLUSH_VERTICES(ctx
, 0);
1266 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1270 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1272 for (i
= 0; i
< n
; i
++) {
1273 struct gl_buffer_object
*bufObj
=
1274 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1276 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1279 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1281 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1283 /* unbind any vertex pointers bound to this buffer */
1284 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1285 unbind(ctx
, vao
, j
, bufObj
);
1288 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1289 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1291 if (vao
->IndexBufferObj
== bufObj
) {
1292 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1295 /* unbind ARB_draw_indirect binding point */
1296 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1297 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1300 /* unbind ARB_indirect_parameters binding point */
1301 if (ctx
->ParameterBuffer
== bufObj
) {
1302 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1305 /* unbind ARB_compute_shader binding point */
1306 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1307 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1310 /* unbind ARB_copy_buffer binding points */
1311 if (ctx
->CopyReadBuffer
== bufObj
) {
1312 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1314 if (ctx
->CopyWriteBuffer
== bufObj
) {
1315 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1318 /* unbind transform feedback binding points */
1319 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1320 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1322 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1323 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1324 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1328 /* unbind UBO binding points */
1329 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1330 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1331 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1335 if (ctx
->UniformBuffer
== bufObj
) {
1336 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1339 /* unbind SSBO binding points */
1340 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1341 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1342 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1346 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1347 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1350 /* unbind Atomci Buffer binding points */
1351 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1352 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1353 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1357 if (ctx
->AtomicBuffer
== bufObj
) {
1358 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1361 /* unbind any pixel pack/unpack pointers bound to this buffer */
1362 if (ctx
->Pack
.BufferObj
== bufObj
) {
1363 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1365 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1366 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1369 if (ctx
->Texture
.BufferObject
== bufObj
) {
1370 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1373 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1374 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1377 /* unbind query buffer binding point */
1378 if (ctx
->QueryBuffer
== bufObj
) {
1379 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1382 /* The ID is immediately freed for re-use */
1383 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1384 /* Make sure we do not run into the classic ABA problem on bind.
1385 * We don't want to allow re-binding a buffer object that's been
1386 * "deleted" by glDeleteBuffers().
1388 * The explicit rebinding to the default object in the current context
1389 * prevents the above in the current context, but another context
1390 * sharing the same objects might suffer from this problem.
1391 * The alternative would be to do the hash lookup in any case on bind
1392 * which would introduce more runtime overhead than this.
1394 bufObj
->DeletePending
= GL_TRUE
;
1395 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1399 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1404 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1405 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1409 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1411 GET_CURRENT_CONTEXT(ctx
);
1413 struct gl_buffer_object
*buf
;
1415 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1417 if (MESA_VERBOSE
& VERBOSE_API
)
1418 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1421 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1430 * This must be atomic (generation and allocation of buffer object IDs)
1432 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1434 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1436 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1437 * DummyBufferObject. Otherwise, create a new buffer object and insert
1440 for (int i
= 0; i
< n
; i
++) {
1441 buffers
[i
] = first
+ i
;
1443 assert(ctx
->Driver
.NewBufferObject
);
1444 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1446 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1447 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1452 buf
= &DummyBufferObject
;
1454 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1457 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1461 * Generate a set of unique buffer object IDs and store them in \c buffers.
1463 * \param n Number of IDs to generate.
1464 * \param buffers Array of \c n locations to store the IDs.
1467 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1469 create_buffers(n
, buffers
, false);
1473 * Create a set of buffer objects and store their unique IDs in \c buffers.
1475 * \param n Number of IDs to generate.
1476 * \param buffers Array of \c n locations to store the IDs.
1479 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1481 create_buffers(n
, buffers
, true);
1486 * Determine if ID is the name of a buffer object.
1488 * \param id ID of the potential buffer object.
1489 * \return \c GL_TRUE if \c id is the name of a buffer object,
1490 * \c GL_FALSE otherwise.
1492 GLboolean GLAPIENTRY
1493 _mesa_IsBuffer(GLuint id
)
1495 struct gl_buffer_object
*bufObj
;
1496 GET_CURRENT_CONTEXT(ctx
);
1497 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1499 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1501 return bufObj
&& bufObj
!= &DummyBufferObject
;
1506 validate_buffer_storage(struct gl_context
*ctx
,
1507 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1508 GLbitfield flags
, const char *func
)
1511 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1515 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1517 GL_MAP_PERSISTENT_BIT
|
1518 GL_MAP_COHERENT_BIT
|
1519 GL_DYNAMIC_STORAGE_BIT
|
1520 GL_CLIENT_STORAGE_BIT
;
1522 if (ctx
->Extensions
.ARB_sparse_buffer
)
1523 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1525 if (flags
& ~valid_flags
) {
1526 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1530 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1532 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1533 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1534 * MAP_READ_BIT or MAP_WRITE_BIT."
1536 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1537 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1538 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1542 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1543 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1544 _mesa_error(ctx
, GL_INVALID_VALUE
,
1545 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1549 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1550 _mesa_error(ctx
, GL_INVALID_VALUE
,
1551 "%s(COHERENT and flags!=PERSISTENT)", func
);
1555 if (bufObj
->Immutable
) {
1556 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1565 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1566 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1567 GLbitfield flags
, const char *func
)
1569 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1570 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1572 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1574 bufObj
->Written
= GL_TRUE
;
1575 bufObj
->Immutable
= GL_TRUE
;
1576 bufObj
->MinMaxCacheDirty
= true;
1578 assert(ctx
->Driver
.BufferData
);
1579 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1581 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1582 /* Even though the interaction between AMD_pinned_memory and
1583 * glBufferStorage is not described in the spec, Graham Sellers
1584 * said that it should behave the same as glBufferData.
1586 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1589 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1595 static ALWAYS_INLINE
void
1596 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1597 const GLvoid
*data
, GLbitfield flags
, bool dsa
,
1600 GET_CURRENT_CONTEXT(ctx
);
1601 struct gl_buffer_object
*bufObj
;
1604 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1608 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1613 if (validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1614 buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
, func
);
1619 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1622 inlined_buffer_storage(target
, 0, size
, data
, flags
, false,
1627 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1630 /* In direct state access, buffer objects have an unspecified target
1631 * since they are not required to be bound.
1633 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true,
1634 "glNamedBufferStorage");
1639 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1640 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1641 GLenum usage
, const char *func
)
1645 if (MESA_VERBOSE
& VERBOSE_API
) {
1646 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1648 _mesa_enum_to_string(target
),
1649 (long int) size
, data
,
1650 _mesa_enum_to_string(usage
));
1654 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1659 case GL_STREAM_DRAW_ARB
:
1660 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1663 case GL_STATIC_DRAW_ARB
:
1664 case GL_DYNAMIC_DRAW_ARB
:
1668 case GL_STREAM_READ_ARB
:
1669 case GL_STREAM_COPY_ARB
:
1670 case GL_STATIC_READ_ARB
:
1671 case GL_STATIC_COPY_ARB
:
1672 case GL_DYNAMIC_READ_ARB
:
1673 case GL_DYNAMIC_COPY_ARB
:
1674 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1678 valid_usage
= false;
1683 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1684 _mesa_enum_to_string(usage
));
1688 if (bufObj
->Immutable
) {
1689 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1693 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1694 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1696 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1698 bufObj
->Written
= GL_TRUE
;
1699 bufObj
->MinMaxCacheDirty
= true;
1702 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1703 bufObj
->Name
, size
, data
, usage
);
1710 assert(ctx
->Driver
.BufferData
);
1711 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1714 GL_DYNAMIC_STORAGE_BIT
,
1716 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1717 /* From GL_AMD_pinned_memory:
1719 * INVALID_OPERATION is generated by BufferData if <target> is
1720 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1721 * mapped to the GPU address space.
1723 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1726 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1732 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1733 const GLvoid
*data
, GLenum usage
)
1735 GET_CURRENT_CONTEXT(ctx
);
1736 struct gl_buffer_object
*bufObj
;
1738 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1742 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1747 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1750 GET_CURRENT_CONTEXT(ctx
);
1751 struct gl_buffer_object
*bufObj
;
1753 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1757 /* In direct state access, buffer objects have an unspecified target since
1758 * they are not required to be bound.
1760 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1761 "glNamedBufferData");
1766 * Implementation for glBufferSubData and glNamedBufferSubData.
1768 * \param ctx GL context.
1769 * \param bufObj The buffer object.
1770 * \param offset Offset of the first byte of the subdata range.
1771 * \param size Size, in bytes, of the subdata range.
1772 * \param data The data store.
1773 * \param func Name of calling function for recording errors.
1777 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1778 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1781 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1783 /* error already recorded */
1787 if (bufObj
->Immutable
&&
1788 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1789 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1796 bufObj
->NumSubDataCalls
++;
1798 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1799 bufObj
->Usage
== GL_STATIC_COPY
) &&
1800 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
) {
1801 /* If the application declared the buffer as static draw/copy or stream
1802 * draw, it should not be frequently modified with glBufferSubData.
1804 BUFFER_USAGE_WARNING(ctx
,
1805 "using %s(buffer %u, offset %u, size %u) to "
1806 "update a %s buffer",
1807 func
, bufObj
->Name
, offset
, size
,
1808 _mesa_enum_to_string(bufObj
->Usage
));
1811 bufObj
->Written
= GL_TRUE
;
1812 bufObj
->MinMaxCacheDirty
= true;
1814 assert(ctx
->Driver
.BufferSubData
);
1815 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1819 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1820 GLsizeiptr size
, const GLvoid
*data
)
1822 GET_CURRENT_CONTEXT(ctx
);
1823 struct gl_buffer_object
*bufObj
;
1825 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1829 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1833 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1834 GLsizeiptr size
, const GLvoid
*data
)
1836 GET_CURRENT_CONTEXT(ctx
);
1837 struct gl_buffer_object
*bufObj
;
1839 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1843 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1844 "glNamedBufferSubData");
1849 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1850 GLsizeiptr size
, GLvoid
*data
)
1852 GET_CURRENT_CONTEXT(ctx
);
1853 struct gl_buffer_object
*bufObj
;
1855 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1856 GL_INVALID_OPERATION
);
1860 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1861 "glGetBufferSubData")) {
1865 assert(ctx
->Driver
.GetBufferSubData
);
1866 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1870 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1871 GLsizeiptr size
, GLvoid
*data
)
1873 GET_CURRENT_CONTEXT(ctx
);
1874 struct gl_buffer_object
*bufObj
;
1876 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1877 "glGetNamedBufferSubData");
1881 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1882 "glGetNamedBufferSubData")) {
1886 assert(ctx
->Driver
.GetBufferSubData
);
1887 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1892 * \param subdata true if caller is *SubData, false if *Data
1895 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1896 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
1897 GLenum format
, GLenum type
, const GLvoid
*data
,
1898 const char *func
, bool subdata
)
1900 mesa_format mesaFormat
;
1901 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1902 GLsizeiptr clearValueSize
;
1904 /* This checks for disallowed mappings. */
1905 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1910 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1911 format
, type
, func
);
1913 if (mesaFormat
== MESA_FORMAT_NONE
) {
1917 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1918 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1919 _mesa_error(ctx
, GL_INVALID_VALUE
,
1920 "%s(offset or size is not a multiple of "
1921 "internalformat size)", func
);
1925 /* Bail early. Negative size has already been checked. */
1929 bufObj
->MinMaxCacheDirty
= true;
1932 /* clear to zeros, per the spec */
1933 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1934 NULL
, clearValueSize
, bufObj
);
1938 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1939 format
, type
, data
, func
)) {
1943 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1944 clearValue
, clearValueSize
, bufObj
);
1948 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1949 GLenum type
, const GLvoid
*data
)
1951 GET_CURRENT_CONTEXT(ctx
);
1952 struct gl_buffer_object
*bufObj
;
1954 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1958 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1959 format
, type
, data
, "glClearBufferData", false);
1963 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1964 GLenum format
, GLenum type
, const GLvoid
*data
)
1966 GET_CURRENT_CONTEXT(ctx
);
1967 struct gl_buffer_object
*bufObj
;
1969 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1973 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1974 format
, type
, data
, "glClearNamedBufferData", false);
1979 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1980 GLintptr offset
, GLsizeiptr size
,
1981 GLenum format
, GLenum type
,
1984 GET_CURRENT_CONTEXT(ctx
);
1985 struct gl_buffer_object
*bufObj
;
1987 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
1991 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1992 format
, type
, data
, "glClearBufferSubData", true);
1996 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
1997 GLintptr offset
, GLsizeiptr size
,
1998 GLenum format
, GLenum type
,
2001 GET_CURRENT_CONTEXT(ctx
);
2002 struct gl_buffer_object
*bufObj
;
2004 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2005 "glClearNamedBufferSubData");
2009 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2010 type
, data
, "glClearNamedBufferSubData", true);
2014 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2016 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2017 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2018 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2019 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2020 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2026 validate_and_unmap_buffer(struct gl_context
*ctx
,
2027 struct gl_buffer_object
*bufObj
,
2030 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2032 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2033 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2034 "%s(buffer is not mapped)", func
);
2039 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2040 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2042 /* check that last 100 bytes are still = magic value */
2043 for (i
= 0; i
< 100; i
++) {
2044 GLuint pos
= bufObj
->Size
- i
- 1;
2045 if (buf
[pos
] != 123) {
2046 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2047 " at position %d (value = %u)\n",
2055 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2056 GLuint i
, unchanged
= 0;
2057 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2059 /* check which bytes changed */
2060 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2061 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2068 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2069 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2074 return unmap_buffer(ctx
, bufObj
);
2077 GLboolean GLAPIENTRY
2078 _mesa_UnmapBuffer_no_error(GLenum target
)
2080 GET_CURRENT_CONTEXT(ctx
);
2081 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2082 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2084 return unmap_buffer(ctx
, bufObj
);
2087 GLboolean GLAPIENTRY
2088 _mesa_UnmapBuffer(GLenum target
)
2090 GET_CURRENT_CONTEXT(ctx
);
2091 struct gl_buffer_object
*bufObj
;
2093 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2097 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2100 GLboolean GLAPIENTRY
2101 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2103 GET_CURRENT_CONTEXT(ctx
);
2104 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2106 return unmap_buffer(ctx
, bufObj
);
2109 GLboolean GLAPIENTRY
2110 _mesa_UnmapNamedBuffer(GLuint buffer
)
2112 GET_CURRENT_CONTEXT(ctx
);
2113 struct gl_buffer_object
*bufObj
;
2115 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2119 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2124 get_buffer_parameter(struct gl_context
*ctx
,
2125 struct gl_buffer_object
*bufObj
, GLenum pname
,
2126 GLint64
*params
, const char *func
)
2129 case GL_BUFFER_SIZE_ARB
:
2130 *params
= bufObj
->Size
;
2132 case GL_BUFFER_USAGE_ARB
:
2133 *params
= bufObj
->Usage
;
2135 case GL_BUFFER_ACCESS_ARB
:
2136 *params
= simplified_access_mode(ctx
,
2137 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2139 case GL_BUFFER_MAPPED_ARB
:
2140 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2142 case GL_BUFFER_ACCESS_FLAGS
:
2143 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2145 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2147 case GL_BUFFER_MAP_OFFSET
:
2148 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2150 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2152 case GL_BUFFER_MAP_LENGTH
:
2153 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2155 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2157 case GL_BUFFER_IMMUTABLE_STORAGE
:
2158 if (!ctx
->Extensions
.ARB_buffer_storage
)
2160 *params
= bufObj
->Immutable
;
2162 case GL_BUFFER_STORAGE_FLAGS
:
2163 if (!ctx
->Extensions
.ARB_buffer_storage
)
2165 *params
= bufObj
->StorageFlags
;
2174 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2175 _mesa_enum_to_string(pname
));
2180 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2182 GET_CURRENT_CONTEXT(ctx
);
2183 struct gl_buffer_object
*bufObj
;
2186 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2187 GL_INVALID_OPERATION
);
2191 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2192 "glGetBufferParameteriv"))
2193 return; /* Error already recorded. */
2195 *params
= (GLint
) parameter
;
2199 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2201 GET_CURRENT_CONTEXT(ctx
);
2202 struct gl_buffer_object
*bufObj
;
2205 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2206 GL_INVALID_OPERATION
);
2210 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2211 "glGetBufferParameteri64v"))
2212 return; /* Error already recorded. */
2214 *params
= parameter
;
2218 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2220 GET_CURRENT_CONTEXT(ctx
);
2221 struct gl_buffer_object
*bufObj
;
2224 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2225 "glGetNamedBufferParameteriv");
2229 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2230 "glGetNamedBufferParameteriv"))
2231 return; /* Error already recorded. */
2233 *params
= (GLint
) parameter
;
2237 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2240 GET_CURRENT_CONTEXT(ctx
);
2241 struct gl_buffer_object
*bufObj
;
2244 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2245 "glGetNamedBufferParameteri64v");
2249 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2250 "glGetNamedBufferParameteri64v"))
2251 return; /* Error already recorded. */
2253 *params
= parameter
;
2258 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2260 GET_CURRENT_CONTEXT(ctx
);
2261 struct gl_buffer_object
*bufObj
;
2263 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2264 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2265 "GL_BUFFER_MAP_POINTER)");
2269 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2270 GL_INVALID_OPERATION
);
2274 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2278 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2280 GET_CURRENT_CONTEXT(ctx
);
2281 struct gl_buffer_object
*bufObj
;
2283 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2284 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2285 "GL_BUFFER_MAP_POINTER)");
2289 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2290 "glGetNamedBufferPointerv");
2294 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2299 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2300 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2301 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2303 if (_mesa_check_disallowed_mapping(src
)) {
2304 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2305 "%s(readBuffer is mapped)", func
);
2309 if (_mesa_check_disallowed_mapping(dst
)) {
2310 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2311 "%s(writeBuffer is mapped)", func
);
2315 if (readOffset
< 0) {
2316 _mesa_error(ctx
, GL_INVALID_VALUE
,
2317 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2321 if (writeOffset
< 0) {
2322 _mesa_error(ctx
, GL_INVALID_VALUE
,
2323 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2328 _mesa_error(ctx
, GL_INVALID_VALUE
,
2329 "%s(size %d < 0)", func
, (int) size
);
2333 if (readOffset
+ size
> src
->Size
) {
2334 _mesa_error(ctx
, GL_INVALID_VALUE
,
2335 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2336 (int) readOffset
, (int) size
, (int) src
->Size
);
2340 if (writeOffset
+ size
> dst
->Size
) {
2341 _mesa_error(ctx
, GL_INVALID_VALUE
,
2342 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2343 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2348 if (readOffset
+ size
<= writeOffset
) {
2351 else if (writeOffset
+ size
<= readOffset
) {
2355 /* overlapping src/dst is illegal */
2356 _mesa_error(ctx
, GL_INVALID_VALUE
,
2357 "%s(overlapping src/dst)", func
);
2362 dst
->MinMaxCacheDirty
= true;
2364 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2368 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2369 GLintptr readOffset
, GLintptr writeOffset
,
2372 GET_CURRENT_CONTEXT(ctx
);
2374 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2375 struct gl_buffer_object
*src
= *src_ptr
;
2377 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2378 struct gl_buffer_object
*dst
= *dst_ptr
;
2380 dst
->MinMaxCacheDirty
= true;
2381 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2386 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2387 GLintptr readOffset
, GLintptr writeOffset
,
2390 GET_CURRENT_CONTEXT(ctx
);
2391 struct gl_buffer_object
*src
, *dst
;
2393 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2394 GL_INVALID_OPERATION
);
2398 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2399 GL_INVALID_OPERATION
);
2403 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2404 "glCopyBufferSubData");
2408 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2409 GLintptr readOffset
,
2410 GLintptr writeOffset
, GLsizeiptr size
)
2412 GET_CURRENT_CONTEXT(ctx
);
2414 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2415 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2417 dst
->MinMaxCacheDirty
= true;
2418 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2423 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2424 GLintptr readOffset
, GLintptr writeOffset
,
2427 GET_CURRENT_CONTEXT(ctx
);
2428 struct gl_buffer_object
*src
, *dst
;
2430 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2431 "glCopyNamedBufferSubData");
2435 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2436 "glCopyNamedBufferSubData");
2440 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2441 "glCopyNamedBufferSubData");
2445 validate_map_buffer_range(struct gl_context
*ctx
,
2446 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2447 GLsizeiptr length
, GLbitfield access
,
2450 GLbitfield allowed_access
;
2452 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2455 _mesa_error(ctx
, GL_INVALID_VALUE
,
2456 "%s(offset %ld < 0)", func
, (long) offset
);
2461 _mesa_error(ctx
, GL_INVALID_VALUE
,
2462 "%s(length %ld < 0)", func
, (long) length
);
2466 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2468 * "An INVALID_OPERATION error is generated for any of the following
2471 * * <length> is zero."
2473 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2474 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2478 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2482 allowed_access
= GL_MAP_READ_BIT
|
2484 GL_MAP_INVALIDATE_RANGE_BIT
|
2485 GL_MAP_INVALIDATE_BUFFER_BIT
|
2486 GL_MAP_FLUSH_EXPLICIT_BIT
|
2487 GL_MAP_UNSYNCHRONIZED_BIT
;
2489 if (ctx
->Extensions
.ARB_buffer_storage
) {
2490 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2491 GL_MAP_COHERENT_BIT
;
2494 if (access
& ~allowed_access
) {
2495 /* generate an error if any bits other than those allowed are set */
2496 _mesa_error(ctx
, GL_INVALID_VALUE
,
2497 "%s(access has undefined bits set)", func
);
2501 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2502 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2503 "%s(access indicates neither read or write)", func
);
2507 if ((access
& GL_MAP_READ_BIT
) &&
2508 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2509 GL_MAP_INVALIDATE_BUFFER_BIT
|
2510 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2511 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2512 "%s(read access with disallowed bits)", func
);
2516 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2517 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2518 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2519 "%s(access has flush explicit without write)", func
);
2523 if (access
& GL_MAP_READ_BIT
&&
2524 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2525 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2526 "%s(buffer does not allow read access)", func
);
2530 if (access
& GL_MAP_WRITE_BIT
&&
2531 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2532 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2533 "%s(buffer does not allow write access)", func
);
2537 if (access
& GL_MAP_COHERENT_BIT
&&
2538 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2539 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2540 "%s(buffer does not allow coherent access)", func
);
2544 if (access
& GL_MAP_PERSISTENT_BIT
&&
2545 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2546 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2547 "%s(buffer does not allow persistent access)", func
);
2551 if (offset
+ length
> bufObj
->Size
) {
2552 _mesa_error(ctx
, GL_INVALID_VALUE
,
2553 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2554 (unsigned long) offset
, (unsigned long) length
,
2555 (unsigned long) bufObj
->Size
);
2559 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2560 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2561 "%s(buffer already mapped)", func
);
2565 if (access
& GL_MAP_WRITE_BIT
) {
2566 bufObj
->NumMapBufferWriteCalls
++;
2567 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2568 bufObj
->Usage
== GL_STATIC_COPY
) &&
2569 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2570 BUFFER_USAGE_WARNING(ctx
,
2571 "using %s(buffer %u, offset %u, length %u) to "
2572 "update a %s buffer",
2573 func
, bufObj
->Name
, offset
, length
,
2574 _mesa_enum_to_string(bufObj
->Usage
));
2582 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2583 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2586 if (!bufObj
->Size
) {
2587 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2591 assert(ctx
->Driver
.MapBufferRange
);
2592 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2595 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2598 /* The driver callback should have set all these fields.
2599 * This is important because other modules (like VBO) might call
2600 * the driver function directly.
2602 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2603 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2604 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2605 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2608 if (access
& GL_MAP_WRITE_BIT
) {
2609 bufObj
->Written
= GL_TRUE
;
2610 bufObj
->MinMaxCacheDirty
= true;
2614 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2615 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2616 bufObj
->Name
, bufObj
->Size
, access
);
2617 /* Access must be write only */
2618 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2620 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2621 for (i
= 0; i
< bufObj
->Size
; i
++)
2628 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2629 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2631 /* buffer is 100 bytes larger than requested, fill with magic value */
2632 for (i
= 0; i
< 100; i
++) {
2633 buf
[bufObj
->Size
- i
- 1] = 123;
2642 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
2643 GLsizeiptr length
, GLbitfield access
)
2645 GET_CURRENT_CONTEXT(ctx
);
2647 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2648 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2650 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2651 "glMapBufferRange");
2655 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2658 GET_CURRENT_CONTEXT(ctx
);
2659 struct gl_buffer_object
*bufObj
;
2661 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2662 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2663 "glMapBufferRange(ARB_map_buffer_range not supported)");
2667 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2671 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2672 "glMapBufferRange"))
2675 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2676 "glMapBufferRange");
2680 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2681 GLsizeiptr length
, GLbitfield access
)
2683 GET_CURRENT_CONTEXT(ctx
);
2684 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2686 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2687 "glMapNamedBufferRange");
2691 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2694 GET_CURRENT_CONTEXT(ctx
);
2695 struct gl_buffer_object
*bufObj
;
2697 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2698 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2699 "glMapNamedBufferRange("
2700 "ARB_map_buffer_range not supported)");
2704 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2708 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2709 "glMapNamedBufferRange"))
2712 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2713 "glMapNamedBufferRange");
2717 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2718 * flags for input to map_buffer_range.
2720 * \return true if the type of requested access is permissible.
2723 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2727 case GL_READ_ONLY_ARB
:
2728 *flags
= GL_MAP_READ_BIT
;
2729 return _mesa_is_desktop_gl(ctx
);
2730 case GL_WRITE_ONLY_ARB
:
2731 *flags
= GL_MAP_WRITE_BIT
;
2733 case GL_READ_WRITE_ARB
:
2734 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2735 return _mesa_is_desktop_gl(ctx
);
2742 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
2744 GET_CURRENT_CONTEXT(ctx
);
2746 GLbitfield accessFlags
;
2747 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2749 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2750 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2752 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2757 _mesa_MapBuffer(GLenum target
, GLenum access
)
2759 GET_CURRENT_CONTEXT(ctx
);
2760 struct gl_buffer_object
*bufObj
;
2761 GLbitfield accessFlags
;
2763 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2764 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2768 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2772 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2776 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2781 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
2783 GET_CURRENT_CONTEXT(ctx
);
2785 GLbitfield accessFlags
;
2786 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
2788 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2790 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2791 "glMapNamedBuffer");
2795 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2797 GET_CURRENT_CONTEXT(ctx
);
2798 struct gl_buffer_object
*bufObj
;
2799 GLbitfield accessFlags
;
2801 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2802 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2806 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2810 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2811 "glMapNamedBuffer"))
2814 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2815 "glMapNamedBuffer");
2820 flush_mapped_buffer_range(struct gl_context
*ctx
,
2821 struct gl_buffer_object
*bufObj
,
2822 GLintptr offset
, GLsizeiptr length
,
2825 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2826 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2827 "%s(ARB_map_buffer_range not supported)", func
);
2832 _mesa_error(ctx
, GL_INVALID_VALUE
,
2833 "%s(offset %ld < 0)", func
, (long) offset
);
2838 _mesa_error(ctx
, GL_INVALID_VALUE
,
2839 "%s(length %ld < 0)", func
, (long) length
);
2843 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2844 /* buffer is not mapped */
2845 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2846 "%s(buffer is not mapped)", func
);
2850 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2851 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2852 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2853 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2857 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2858 _mesa_error(ctx
, GL_INVALID_VALUE
,
2859 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2860 (long) offset
, (long) length
,
2861 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2865 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2867 if (ctx
->Driver
.FlushMappedBufferRange
)
2868 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2873 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
2876 GET_CURRENT_CONTEXT(ctx
);
2877 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2878 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2880 if (ctx
->Driver
.FlushMappedBufferRange
)
2881 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2886 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2889 GET_CURRENT_CONTEXT(ctx
);
2890 struct gl_buffer_object
*bufObj
;
2892 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2893 GL_INVALID_OPERATION
);
2897 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2898 "glFlushMappedBufferRange");
2902 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
2905 GET_CURRENT_CONTEXT(ctx
);
2906 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2908 if (ctx
->Driver
.FlushMappedBufferRange
)
2909 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2914 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2917 GET_CURRENT_CONTEXT(ctx
);
2918 struct gl_buffer_object
*bufObj
;
2920 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2921 "glFlushMappedNamedBufferRange");
2925 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2926 "glFlushMappedNamedBufferRange");
2931 * Binds a buffer object to a uniform buffer binding point.
2933 * The caller is responsible for flushing vertices and updating
2937 set_ubo_binding(struct gl_context
*ctx
,
2938 struct gl_uniform_buffer_binding
*binding
,
2939 struct gl_buffer_object
*bufObj
,
2944 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2946 binding
->Offset
= offset
;
2947 binding
->Size
= size
;
2948 binding
->AutomaticSize
= autoSize
;
2950 /* If this is a real buffer object, mark it has having been used
2951 * at some point as a UBO.
2954 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
2958 * Binds a buffer object to a shader storage buffer binding point.
2960 * The caller is responsible for flushing vertices and updating
2964 set_ssbo_binding(struct gl_context
*ctx
,
2965 struct gl_shader_storage_buffer_binding
*binding
,
2966 struct gl_buffer_object
*bufObj
,
2971 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2973 binding
->Offset
= offset
;
2974 binding
->Size
= size
;
2975 binding
->AutomaticSize
= autoSize
;
2977 /* If this is a real buffer object, mark it has having been used
2978 * at some point as a SSBO.
2981 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
2985 * Binds a buffer object to a uniform buffer binding point.
2987 * Unlike set_ubo_binding(), this function also flushes vertices
2988 * and updates NewDriverState. It also checks if the binding
2989 * has actually changed before updating it.
2992 bind_uniform_buffer(struct gl_context
*ctx
,
2994 struct gl_buffer_object
*bufObj
,
2999 struct gl_uniform_buffer_binding
*binding
=
3000 &ctx
->UniformBufferBindings
[index
];
3002 if (binding
->BufferObject
== bufObj
&&
3003 binding
->Offset
== offset
&&
3004 binding
->Size
== size
&&
3005 binding
->AutomaticSize
== autoSize
) {
3009 FLUSH_VERTICES(ctx
, 0);
3010 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3012 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3016 * Binds a buffer object to a shader storage buffer binding point.
3018 * Unlike set_ssbo_binding(), this function also flushes vertices
3019 * and updates NewDriverState. It also checks if the binding
3020 * has actually changed before updating it.
3023 bind_shader_storage_buffer(struct gl_context
*ctx
,
3025 struct gl_buffer_object
*bufObj
,
3030 struct gl_shader_storage_buffer_binding
*binding
=
3031 &ctx
->ShaderStorageBufferBindings
[index
];
3033 if (binding
->BufferObject
== bufObj
&&
3034 binding
->Offset
== offset
&&
3035 binding
->Size
== size
&&
3036 binding
->AutomaticSize
== autoSize
) {
3040 FLUSH_VERTICES(ctx
, 0);
3041 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3043 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3047 * Bind a region of a buffer object to a uniform block binding point.
3048 * \param index the uniform buffer binding point index
3049 * \param bufObj the buffer object
3050 * \param offset offset to the start of buffer object region
3051 * \param size size of the buffer object region
3054 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
3056 struct gl_buffer_object
*bufObj
,
3060 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3061 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3065 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3066 _mesa_error(ctx
, GL_INVALID_VALUE
,
3067 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3068 ctx
->Const
.UniformBufferOffsetAlignment
);
3072 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3077 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3078 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3082 * Bind a region of a buffer object to a shader storage block binding point.
3083 * \param index the shader storage buffer binding point index
3084 * \param bufObj the buffer object
3085 * \param offset offset to the start of buffer object region
3086 * \param size size of the buffer object region
3089 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3091 struct gl_buffer_object
*bufObj
,
3095 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3096 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3100 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3101 _mesa_error(ctx
, GL_INVALID_VALUE
,
3102 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3103 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3107 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3112 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3113 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3117 * Bind a buffer object to a uniform block binding point.
3118 * As above, but offset = 0.
3121 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
3123 struct gl_buffer_object
*bufObj
)
3125 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3126 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3130 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3132 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3133 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3135 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3139 * Bind a buffer object to a shader storage block binding point.
3140 * As above, but offset = 0.
3143 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
3145 struct gl_buffer_object
*bufObj
)
3147 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3148 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3152 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3154 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3155 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3157 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3161 * Binds a buffer object to an atomic buffer binding point.
3163 * The caller is responsible for validating the offset,
3164 * flushing the vertices and updating NewDriverState.
3167 set_atomic_buffer_binding(struct gl_context
*ctx
,
3168 struct gl_atomic_buffer_binding
*binding
,
3169 struct gl_buffer_object
*bufObj
,
3173 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3175 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3176 binding
->Offset
= 0;
3179 binding
->Offset
= offset
;
3180 binding
->Size
= size
;
3181 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3186 * Binds a buffer object to an atomic buffer binding point.
3188 * Unlike set_atomic_buffer_binding(), this function also validates the
3189 * index and offset, flushes vertices, and updates NewDriverState.
3190 * It also checks if the binding has actually changing before
3194 bind_atomic_buffer(struct gl_context
*ctx
,
3196 struct gl_buffer_object
*bufObj
,
3201 struct gl_atomic_buffer_binding
*binding
;
3203 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3204 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3208 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3209 _mesa_error(ctx
, GL_INVALID_VALUE
,
3210 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3211 ATOMIC_COUNTER_SIZE
);
3215 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3217 binding
= &ctx
->AtomicBufferBindings
[index
];
3218 if (binding
->BufferObject
== bufObj
&&
3219 binding
->Offset
== offset
&&
3220 binding
->Size
== size
) {
3224 FLUSH_VERTICES(ctx
, 0);
3225 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3227 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3231 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3233 const GLintptr
*offsets
,
3234 const GLsizeiptr
*sizes
)
3236 if (offsets
[index
] < 0) {
3237 /* The ARB_multi_bind spec says:
3239 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3240 * value in <offsets> is less than zero (per binding)."
3242 _mesa_error(ctx
, GL_INVALID_VALUE
,
3243 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3244 index
, (int64_t) offsets
[index
]);
3248 if (sizes
[index
] <= 0) {
3249 /* The ARB_multi_bind spec says:
3251 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3252 * value in <sizes> is less than or equal to zero (per binding)."
3254 _mesa_error(ctx
, GL_INVALID_VALUE
,
3255 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3256 index
, (int64_t) sizes
[index
]);
3264 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3265 GLuint first
, GLsizei count
,
3268 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3269 _mesa_error(ctx
, GL_INVALID_ENUM
,
3270 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3274 /* The ARB_multi_bind_spec says:
3276 * "An INVALID_OPERATION error is generated if <first> + <count> is
3277 * greater than the number of target-specific indexed binding points,
3278 * as described in section 6.7.1."
3280 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3281 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3282 "%s(first=%u + count=%d > the value of "
3283 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3284 caller
, first
, count
,
3285 ctx
->Const
.MaxUniformBufferBindings
);
3293 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3294 GLuint first
, GLsizei count
,
3297 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3298 _mesa_error(ctx
, GL_INVALID_ENUM
,
3299 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3303 /* The ARB_multi_bind_spec says:
3305 * "An INVALID_OPERATION error is generated if <first> + <count> is
3306 * greater than the number of target-specific indexed binding points,
3307 * as described in section 6.7.1."
3309 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3310 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3311 "%s(first=%u + count=%d > the value of "
3312 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3313 caller
, first
, count
,
3314 ctx
->Const
.MaxShaderStorageBufferBindings
);
3322 * Unbind all uniform buffers in the range
3323 * <first> through <first>+<count>-1
3326 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3328 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3330 for (int i
= 0; i
< count
; i
++)
3331 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3332 bufObj
, -1, -1, GL_TRUE
);
3336 * Unbind all shader storage buffers in the range
3337 * <first> through <first>+<count>-1
3340 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3343 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3345 for (int i
= 0; i
< count
; i
++)
3346 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3347 bufObj
, -1, -1, GL_TRUE
);
3351 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3352 const GLuint
*buffers
,
3354 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3357 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3360 /* Assume that at least one binding will be changed */
3361 FLUSH_VERTICES(ctx
, 0);
3362 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3365 /* The ARB_multi_bind spec says:
3367 * "If <buffers> is NULL, all bindings from <first> through
3368 * <first>+<count>-1 are reset to their unbound (zero) state.
3369 * In this case, the offsets and sizes associated with the
3370 * binding points are set to default values, ignoring
3371 * <offsets> and <sizes>."
3373 unbind_uniform_buffers(ctx
, first
, count
);
3377 /* Note that the error semantics for multi-bind commands differ from
3378 * those of other GL commands.
3380 * The Issues section in the ARB_multi_bind spec says:
3382 * "(11) Typically, OpenGL specifies that if an error is generated by a
3383 * command, that command has no effect. This is somewhat
3384 * unfortunate for multi-bind commands, because it would require a
3385 * first pass to scan the entire list of bound objects for errors
3386 * and then a second pass to actually perform the bindings.
3387 * Should we have different error semantics?
3389 * RESOLVED: Yes. In this specification, when the parameters for
3390 * one of the <count> binding points are invalid, that binding point
3391 * is not updated and an error will be generated. However, other
3392 * binding points in the same command will be updated if their
3393 * parameters are valid and no other error occurs."
3396 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3398 for (int i
= 0; i
< count
; i
++) {
3399 struct gl_uniform_buffer_binding
*binding
=
3400 &ctx
->UniformBufferBindings
[first
+ i
];
3401 struct gl_buffer_object
*bufObj
;
3402 GLintptr offset
= 0;
3403 GLsizeiptr size
= 0;
3406 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3409 /* The ARB_multi_bind spec says:
3411 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3412 * pair of values in <offsets> and <sizes> does not respectively
3413 * satisfy the constraints described for those parameters for the
3414 * specified target, as described in section 6.7.1 (per binding)."
3416 * Section 6.7.1 refers to table 6.5, which says:
3418 * "┌───────────────────────────────────────────────────────────────┐
3419 * │ Uniform buffer array bindings (see sec. 7.6) │
3420 * ├─────────────────────┬─────────────────────────────────────────┤
3422 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3423 * │ │ OFFSET_ALIGNMENT │
3425 * │ size restriction │ none │
3426 * └─────────────────────┴─────────────────────────────────────────┘"
3428 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3429 _mesa_error(ctx
, GL_INVALID_VALUE
,
3430 "glBindBuffersRange(offsets[%u]=%" PRId64
3431 " is misaligned; it must be a multiple of the value of "
3432 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3433 "target=GL_UNIFORM_BUFFER)",
3434 i
, (int64_t) offsets
[i
],
3435 ctx
->Const
.UniformBufferOffsetAlignment
);
3439 offset
= offsets
[i
];
3443 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3444 bufObj
= binding
->BufferObject
;
3446 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3449 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3450 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3452 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3456 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3460 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3461 GLsizei count
, const GLuint
*buffers
,
3463 const GLintptr
*offsets
,
3464 const GLsizeiptr
*sizes
,
3467 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3470 /* Assume that at least one binding will be changed */
3471 FLUSH_VERTICES(ctx
, 0);
3472 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3475 /* The ARB_multi_bind spec says:
3477 * "If <buffers> is NULL, all bindings from <first> through
3478 * <first>+<count>-1 are reset to their unbound (zero) state.
3479 * In this case, the offsets and sizes associated with the
3480 * binding points are set to default values, ignoring
3481 * <offsets> and <sizes>."
3483 unbind_shader_storage_buffers(ctx
, first
, count
);
3487 /* Note that the error semantics for multi-bind commands differ from
3488 * those of other GL commands.
3490 * The Issues section in the ARB_multi_bind spec says:
3492 * "(11) Typically, OpenGL specifies that if an error is generated by a
3493 * command, that command has no effect. This is somewhat
3494 * unfortunate for multi-bind commands, because it would require a
3495 * first pass to scan the entire list of bound objects for errors
3496 * and then a second pass to actually perform the bindings.
3497 * Should we have different error semantics?
3499 * RESOLVED: Yes. In this specification, when the parameters for
3500 * one of the <count> binding points are invalid, that binding point
3501 * is not updated and an error will be generated. However, other
3502 * binding points in the same command will be updated if their
3503 * parameters are valid and no other error occurs."
3506 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3508 for (int i
= 0; i
< count
; i
++) {
3509 struct gl_shader_storage_buffer_binding
*binding
=
3510 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3511 struct gl_buffer_object
*bufObj
;
3512 GLintptr offset
= 0;
3513 GLsizeiptr size
= 0;
3516 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3519 /* The ARB_multi_bind spec says:
3521 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3522 * pair of values in <offsets> and <sizes> does not respectively
3523 * satisfy the constraints described for those parameters for the
3524 * specified target, as described in section 6.7.1 (per binding)."
3526 * Section 6.7.1 refers to table 6.5, which says:
3528 * "┌───────────────────────────────────────────────────────────────┐
3529 * │ Shader storage buffer array bindings (see sec. 7.8) │
3530 * ├─────────────────────┬─────────────────────────────────────────┤
3532 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3533 * │ │ BUFFER_OFFSET_ALIGNMENT │
3535 * │ size restriction │ none │
3536 * └─────────────────────┴─────────────────────────────────────────┘"
3538 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3539 _mesa_error(ctx
, GL_INVALID_VALUE
,
3540 "glBindBuffersRange(offsets[%u]=%" PRId64
3541 " is misaligned; it must be a multiple of the value of "
3542 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3543 "target=GL_SHADER_STORAGE_BUFFER)",
3544 i
, (int64_t) offsets
[i
],
3545 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3549 offset
= offsets
[i
];
3553 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3554 bufObj
= binding
->BufferObject
;
3556 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3559 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3560 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3562 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3566 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3570 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3571 struct gl_transform_feedback_object
*tfObj
,
3572 GLuint first
, GLsizei count
, const char *caller
)
3574 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3575 _mesa_error(ctx
, GL_INVALID_ENUM
,
3576 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3580 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3582 * "An INVALID_OPERATION error is generated :
3585 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3586 * FEEDBACK_BUFFER and transform feedback is currently active."
3588 * We assume that this is also meant to apply to BindBuffersRange
3589 * and BindBuffersBase.
3591 if (tfObj
->Active
) {
3592 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3593 "%s(Changing transform feedback buffers while "
3594 "transform feedback is active)", caller
);
3598 /* The ARB_multi_bind_spec says:
3600 * "An INVALID_OPERATION error is generated if <first> + <count> is
3601 * greater than the number of target-specific indexed binding points,
3602 * as described in section 6.7.1."
3604 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3605 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3606 "%s(first=%u + count=%d > the value of "
3607 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3608 caller
, first
, count
,
3609 ctx
->Const
.MaxTransformFeedbackBuffers
);
3617 * Unbind all transform feedback buffers in the range
3618 * <first> through <first>+<count>-1
3621 unbind_xfb_buffers(struct gl_context
*ctx
,
3622 struct gl_transform_feedback_object
*tfObj
,
3623 GLuint first
, GLsizei count
)
3625 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3627 for (int i
= 0; i
< count
; i
++)
3628 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3633 bind_xfb_buffers(struct gl_context
*ctx
,
3634 GLuint first
, GLsizei count
,
3635 const GLuint
*buffers
,
3637 const GLintptr
*offsets
,
3638 const GLsizeiptr
*sizes
,
3641 struct gl_transform_feedback_object
*tfObj
=
3642 ctx
->TransformFeedback
.CurrentObject
;
3644 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3647 /* Assume that at least one binding will be changed */
3648 FLUSH_VERTICES(ctx
, 0);
3649 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3652 /* The ARB_multi_bind spec says:
3654 * "If <buffers> is NULL, all bindings from <first> through
3655 * <first>+<count>-1 are reset to their unbound (zero) state.
3656 * In this case, the offsets and sizes associated with the
3657 * binding points are set to default values, ignoring
3658 * <offsets> and <sizes>."
3660 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3664 /* Note that the error semantics for multi-bind commands differ from
3665 * those of other GL commands.
3667 * The Issues section in the ARB_multi_bind spec says:
3669 * "(11) Typically, OpenGL specifies that if an error is generated by a
3670 * command, that command has no effect. This is somewhat
3671 * unfortunate for multi-bind commands, because it would require a
3672 * first pass to scan the entire list of bound objects for errors
3673 * and then a second pass to actually perform the bindings.
3674 * Should we have different error semantics?
3676 * RESOLVED: Yes. In this specification, when the parameters for
3677 * one of the <count> binding points are invalid, that binding point
3678 * is not updated and an error will be generated. However, other
3679 * binding points in the same command will be updated if their
3680 * parameters are valid and no other error occurs."
3683 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3685 for (int i
= 0; i
< count
; i
++) {
3686 const GLuint index
= first
+ i
;
3687 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3688 struct gl_buffer_object
*bufObj
;
3689 GLintptr offset
= 0;
3690 GLsizeiptr size
= 0;
3693 offset
= offsets
[i
];
3696 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3699 /* The ARB_multi_bind spec says:
3701 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3702 * pair of values in <offsets> and <sizes> does not respectively
3703 * satisfy the constraints described for those parameters for the
3704 * specified target, as described in section 6.7.1 (per binding)."
3706 * Section 6.7.1 refers to table 6.5, which says:
3708 * "┌───────────────────────────────────────────────────────────────┐
3709 * │ Transform feedback array bindings (see sec. 13.2.2) │
3710 * ├───────────────────────┬───────────────────────────────────────┤
3712 * │ offset restriction │ multiple of 4 │
3714 * │ size restriction │ multiple of 4 │
3715 * └───────────────────────┴───────────────────────────────────────┘"
3717 if (offsets
[i
] & 0x3) {
3718 _mesa_error(ctx
, GL_INVALID_VALUE
,
3719 "glBindBuffersRange(offsets[%u]=%" PRId64
3720 " is misaligned; it must be a multiple of 4 when "
3721 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3722 i
, (int64_t) offsets
[i
]);
3726 if (sizes
[i
] & 0x3) {
3727 _mesa_error(ctx
, GL_INVALID_VALUE
,
3728 "glBindBuffersRange(sizes[%u]=%" PRId64
3729 " is misaligned; it must be a multiple of 4 when "
3730 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3731 i
, (int64_t) sizes
[i
]);
3735 offset
= offsets
[i
];
3739 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3740 bufObj
= boundBufObj
;
3742 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3745 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3749 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3753 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3754 GLuint first
, GLsizei count
,
3757 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3758 _mesa_error(ctx
, GL_INVALID_ENUM
,
3759 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3763 /* The ARB_multi_bind_spec says:
3765 * "An INVALID_OPERATION error is generated if <first> + <count> is
3766 * greater than the number of target-specific indexed binding points,
3767 * as described in section 6.7.1."
3769 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3770 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3771 "%s(first=%u + count=%d > the value of "
3772 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3773 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3781 * Unbind all atomic counter buffers in the range
3782 * <first> through <first>+<count>-1
3785 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3787 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3789 for (int i
= 0; i
< count
; i
++)
3790 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3795 bind_atomic_buffers(struct gl_context
*ctx
,
3798 const GLuint
*buffers
,
3800 const GLintptr
*offsets
,
3801 const GLsizeiptr
*sizes
,
3804 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3807 /* Assume that at least one binding will be changed */
3808 FLUSH_VERTICES(ctx
, 0);
3809 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3812 /* The ARB_multi_bind spec says:
3814 * "If <buffers> is NULL, all bindings from <first> through
3815 * <first>+<count>-1 are reset to their unbound (zero) state.
3816 * In this case, the offsets and sizes associated with the
3817 * binding points are set to default values, ignoring
3818 * <offsets> and <sizes>."
3820 unbind_atomic_buffers(ctx
, first
, count
);
3824 /* Note that the error semantics for multi-bind commands differ from
3825 * those of other GL commands.
3827 * The Issues section in the ARB_multi_bind spec says:
3829 * "(11) Typically, OpenGL specifies that if an error is generated by a
3830 * command, that command has no effect. This is somewhat
3831 * unfortunate for multi-bind commands, because it would require a
3832 * first pass to scan the entire list of bound objects for errors
3833 * and then a second pass to actually perform the bindings.
3834 * Should we have different error semantics?
3836 * RESOLVED: Yes. In this specification, when the parameters for
3837 * one of the <count> binding points are invalid, that binding point
3838 * is not updated and an error will be generated. However, other
3839 * binding points in the same command will be updated if their
3840 * parameters are valid and no other error occurs."
3843 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3845 for (int i
= 0; i
< count
; i
++) {
3846 struct gl_atomic_buffer_binding
*binding
=
3847 &ctx
->AtomicBufferBindings
[first
+ i
];
3848 struct gl_buffer_object
*bufObj
;
3849 GLintptr offset
= 0;
3850 GLsizeiptr size
= 0;
3853 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3856 /* The ARB_multi_bind spec says:
3858 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3859 * pair of values in <offsets> and <sizes> does not respectively
3860 * satisfy the constraints described for those parameters for the
3861 * specified target, as described in section 6.7.1 (per binding)."
3863 * Section 6.7.1 refers to table 6.5, which says:
3865 * "┌───────────────────────────────────────────────────────────────┐
3866 * │ Atomic counter array bindings (see sec. 7.7.2) │
3867 * ├───────────────────────┬───────────────────────────────────────┤
3869 * │ offset restriction │ multiple of 4 │
3871 * │ size restriction │ none │
3872 * └───────────────────────┴───────────────────────────────────────┘"
3874 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3875 _mesa_error(ctx
, GL_INVALID_VALUE
,
3876 "glBindBuffersRange(offsets[%u]=%" PRId64
3877 " is misaligned; it must be a multiple of %d when "
3878 "target=GL_ATOMIC_COUNTER_BUFFER)",
3879 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3883 offset
= offsets
[i
];
3887 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3888 bufObj
= binding
->BufferObject
;
3890 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3893 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3896 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3900 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3901 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3903 GET_CURRENT_CONTEXT(ctx
);
3904 struct gl_buffer_object
*bufObj
;
3906 if (MESA_VERBOSE
& VERBOSE_API
) {
3907 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
3908 _mesa_enum_to_string(target
), index
, buffer
,
3909 (unsigned long) offset
, (unsigned long) size
);
3913 bufObj
= ctx
->Shared
->NullBufferObj
;
3915 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3917 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3918 &bufObj
, "glBindBufferRange"))
3922 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3923 "glBindBufferRange(invalid buffer=%u)", buffer
);
3929 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3936 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3937 _mesa_bind_buffer_range_transform_feedback(ctx
,
3938 ctx
->TransformFeedback
.CurrentObject
,
3939 index
, bufObj
, offset
, size
,
3942 case GL_UNIFORM_BUFFER
:
3943 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3945 case GL_SHADER_STORAGE_BUFFER
:
3946 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3948 case GL_ATOMIC_COUNTER_BUFFER
:
3949 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3950 "glBindBufferRange");
3953 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
3959 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
3961 GET_CURRENT_CONTEXT(ctx
);
3962 struct gl_buffer_object
*bufObj
;
3964 if (MESA_VERBOSE
& VERBOSE_API
) {
3965 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
3966 _mesa_enum_to_string(target
), index
, buffer
);
3970 bufObj
= ctx
->Shared
->NullBufferObj
;
3972 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3974 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3975 &bufObj
, "glBindBufferBase"))
3979 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3980 "glBindBufferBase(invalid buffer=%u)", buffer
);
3984 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
3985 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
3987 * "BindBufferBase is equivalent to calling BindBufferRange with offset
3988 * zero and size equal to the size of buffer."
3990 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
3992 * "If the parameter (starting offset or size) was not specified when the
3993 * buffer object was bound, zero is returned."
3995 * What happens if the size of the buffer changes? Does the size of the
3996 * buffer at the moment glBindBufferBase was called still play a role, like
3997 * the first quote would imply, or is the size meaningless in the
3998 * glBindBufferBase case like the second quote would suggest? The GL 4.1
3999 * core spec page 45 says:
4001 * "It is equivalent to calling BindBufferRange with offset zero, while
4002 * size is determined by the size of the bound buffer at the time the
4005 * My interpretation is that the GL 4.1 spec was a clarification of the
4006 * behavior, not a change. In particular, this choice will only make
4007 * rendering work in cases where it would have had undefined results.
4011 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4012 _mesa_bind_buffer_base_transform_feedback(ctx
,
4013 ctx
->TransformFeedback
.CurrentObject
,
4014 index
, bufObj
, false);
4016 case GL_UNIFORM_BUFFER
:
4017 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4019 case GL_SHADER_STORAGE_BUFFER
:
4020 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4022 case GL_ATOMIC_COUNTER_BUFFER
:
4023 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
4024 "glBindBufferBase");
4027 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4033 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4034 const GLuint
*buffers
,
4035 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4037 GET_CURRENT_CONTEXT(ctx
);
4039 if (MESA_VERBOSE
& VERBOSE_API
) {
4040 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4041 _mesa_enum_to_string(target
), first
, count
,
4042 buffers
, offsets
, sizes
);
4046 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4047 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4048 "glBindBuffersRange");
4050 case GL_UNIFORM_BUFFER
:
4051 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4052 "glBindBuffersRange");
4054 case GL_SHADER_STORAGE_BUFFER
:
4055 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4056 "glBindBuffersRange");
4058 case GL_ATOMIC_COUNTER_BUFFER
:
4059 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4060 "glBindBuffersRange");
4063 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4064 _mesa_enum_to_string(target
));
4070 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4071 const GLuint
*buffers
)
4073 GET_CURRENT_CONTEXT(ctx
);
4075 if (MESA_VERBOSE
& VERBOSE_API
) {
4076 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4077 _mesa_enum_to_string(target
), first
, count
, buffers
);
4081 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4082 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4083 "glBindBuffersBase");
4085 case GL_UNIFORM_BUFFER
:
4086 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4087 "glBindBuffersBase");
4089 case GL_SHADER_STORAGE_BUFFER
:
4090 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4091 "glBindBuffersBase");
4093 case GL_ATOMIC_COUNTER_BUFFER
:
4094 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4095 "glBindBuffersBase");
4098 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4099 _mesa_enum_to_string(target
));
4105 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4108 GET_CURRENT_CONTEXT(ctx
);
4109 struct gl_buffer_object
*bufObj
;
4110 const GLintptr end
= offset
+ length
;
4112 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4113 * Profile) spec says:
4115 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4116 * name of an existing buffer object."
4118 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4119 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4120 _mesa_error(ctx
, GL_INVALID_VALUE
,
4121 "glInvalidateBufferSubData(name = %u) invalid object",
4126 /* The GL_ARB_invalidate_subdata spec says:
4128 * "An INVALID_VALUE error is generated if <offset> or <length> is
4129 * negative, or if <offset> + <length> is greater than the value of
4132 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4133 _mesa_error(ctx
, GL_INVALID_VALUE
,
4134 "glInvalidateBufferSubData(invalid offset or length)");
4138 /* The OpenGL 4.4 (Core Profile) spec says:
4140 * "An INVALID_OPERATION error is generated if buffer is currently
4141 * mapped by MapBuffer or if the invalidate range intersects the range
4142 * currently mapped by MapBufferRange, unless it was mapped
4143 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4145 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4146 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4147 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4148 "glInvalidateBufferSubData(intersection with mapped "
4153 if (ctx
->Driver
.InvalidateBufferSubData
)
4154 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4158 _mesa_InvalidateBufferData(GLuint buffer
)
4160 GET_CURRENT_CONTEXT(ctx
);
4161 struct gl_buffer_object
*bufObj
;
4163 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4164 * Profile) spec says:
4166 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4167 * name of an existing buffer object."
4169 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4170 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4171 _mesa_error(ctx
, GL_INVALID_VALUE
,
4172 "glInvalidateBufferData(name = %u) invalid object",
4177 /* The OpenGL 4.4 (Core Profile) spec says:
4179 * "An INVALID_OPERATION error is generated if buffer is currently
4180 * mapped by MapBuffer or if the invalidate range intersects the range
4181 * currently mapped by MapBufferRange, unless it was mapped
4182 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4184 if (_mesa_check_disallowed_mapping(bufObj
)) {
4185 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4186 "glInvalidateBufferData(intersection with mapped "
4191 if (ctx
->Driver
.InvalidateBufferSubData
)
4192 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, 0, bufObj
->Size
);
4196 buffer_page_commitment(struct gl_context
*ctx
,
4197 struct gl_buffer_object
*bufferObj
,
4198 GLintptr offset
, GLsizeiptr size
,
4199 GLboolean commit
, const char *func
)
4201 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4202 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4207 if (size
< 0 || size
> bufferObj
->Size
||
4208 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4209 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4214 /* The GL_ARB_sparse_buffer extension specification says:
4216 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4217 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4218 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4219 * not extend to the end of the buffer's data store."
4221 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4222 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4227 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4228 offset
+ size
!= bufferObj
->Size
) {
4229 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4234 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4238 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4241 GET_CURRENT_CONTEXT(ctx
);
4242 struct gl_buffer_object
*bufferObj
;
4244 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4249 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4250 "glBufferPageCommitmentARB");
4254 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4255 GLsizeiptr size
, GLboolean commit
)
4257 GET_CURRENT_CONTEXT(ctx
);
4258 struct gl_buffer_object
*bufferObj
;
4260 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4261 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4262 /* Note: the extension spec is not clear about the excpected error value. */
4263 _mesa_error(ctx
, GL_INVALID_VALUE
,
4264 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4269 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4270 "glNamedBufferPageCommitmentARB");