2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
34 #include <inttypes.h> /* for PRId64 macro */
35 #include "util/debug.h"
41 #include "bufferobj.h"
44 #include "glformats.h"
46 #include "transformfeedback.h"
52 /*#define BOUNDS_CHECK*/
56 * We count the number of buffer modification calls to check for
57 * inefficient buffer use. This is the number of such calls before we
60 #define BUFFER_WARNING_CALL_COUNT 4
64 * Helper to warn of possible performance issues, such as frequently
65 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
69 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
74 _mesa_gl_vdebug(ctx
, id
,
75 MESA_DEBUG_SOURCE_API
,
76 MESA_DEBUG_TYPE_PERFORMANCE
,
77 MESA_DEBUG_SEVERITY_MEDIUM
,
82 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
84 static GLuint id = 0; \
85 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
90 * Used as a placeholder for buffer objects between glGenBuffers() and
91 * glBindBuffer() so that glIsBuffer() can work correctly.
93 static struct gl_buffer_object DummyBufferObject
;
97 * Return pointer to address of a buffer object target.
98 * \param ctx the GL context
99 * \param target the buffer object target to be retrieved.
100 * \return pointer to pointer to the buffer object bound to \c target in the
101 * specified context or \c NULL if \c target is invalid.
103 static inline struct gl_buffer_object
**
104 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
106 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
108 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
109 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
113 case GL_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.ArrayBufferObj
;
115 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
116 return &ctx
->Array
.VAO
->IndexBufferObj
;
117 case GL_PIXEL_PACK_BUFFER_EXT
:
118 return &ctx
->Pack
.BufferObj
;
119 case GL_PIXEL_UNPACK_BUFFER_EXT
:
120 return &ctx
->Unpack
.BufferObj
;
121 case GL_COPY_READ_BUFFER
:
122 return &ctx
->CopyReadBuffer
;
123 case GL_COPY_WRITE_BUFFER
:
124 return &ctx
->CopyWriteBuffer
;
125 case GL_QUERY_BUFFER
:
126 if (_mesa_has_ARB_query_buffer_object(ctx
))
127 return &ctx
->QueryBuffer
;
129 case GL_DRAW_INDIRECT_BUFFER
:
130 if ((ctx
->API
== API_OPENGL_CORE
&&
131 ctx
->Extensions
.ARB_draw_indirect
) ||
132 _mesa_is_gles31(ctx
)) {
133 return &ctx
->DrawIndirectBuffer
;
136 case GL_PARAMETER_BUFFER_ARB
:
137 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
138 return &ctx
->ParameterBuffer
;
141 case GL_DISPATCH_INDIRECT_BUFFER
:
142 if (_mesa_has_compute_shaders(ctx
)) {
143 return &ctx
->DispatchIndirectBuffer
;
146 case GL_TRANSFORM_FEEDBACK_BUFFER
:
147 if (ctx
->Extensions
.EXT_transform_feedback
) {
148 return &ctx
->TransformFeedback
.CurrentBuffer
;
151 case GL_TEXTURE_BUFFER
:
152 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
153 _mesa_has_OES_texture_buffer(ctx
)) {
154 return &ctx
->Texture
.BufferObject
;
157 case GL_UNIFORM_BUFFER
:
158 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
159 return &ctx
->UniformBuffer
;
162 case GL_SHADER_STORAGE_BUFFER
:
163 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
164 return &ctx
->ShaderStorageBuffer
;
167 case GL_ATOMIC_COUNTER_BUFFER
:
168 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
169 return &ctx
->AtomicBuffer
;
172 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
173 if (ctx
->Extensions
.AMD_pinned_memory
) {
174 return &ctx
->ExternalVirtualMemoryBuffer
;
185 * Get the buffer object bound to the specified target in a GL context.
186 * \param ctx the GL context
187 * \param target the buffer object target to be retrieved.
188 * \param error the GL error to record if target is illegal.
189 * \return pointer to the buffer object bound to \c target in the
190 * specified context or \c NULL if \c target is invalid.
192 static inline struct gl_buffer_object
*
193 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
196 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
199 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
203 if (!_mesa_is_bufferobj(*bufObj
)) {
204 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
213 * Convert a GLbitfield describing the mapped buffer access flags
214 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
217 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
219 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
220 if ((access
& rwFlags
) == rwFlags
)
221 return GL_READ_WRITE
;
222 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
224 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
225 return GL_WRITE_ONLY
;
227 /* Otherwise, AccessFlags is zero (the default state).
229 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
231 * Name Type Initial Value Legal Values
233 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
236 * However, table 6.8 in the GL_OES_mapbuffer extension says:
238 * Get Value Type Get Command Value Description
239 * --------- ---- ----------- ----- -----------
240 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
242 * The difference is because GL_OES_mapbuffer only supports mapping buffers
247 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
252 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
254 * The regions do not overlap if and only if the end of the given
255 * region is before the mapped region or the start of the given region
256 * is after the mapped region.
258 * \param obj Buffer object target on which to operate.
259 * \param offset Offset of the first byte of the subdata range.
260 * \param size Size, in bytes, of the subdata range.
261 * \return true if ranges overlap, false otherwise
265 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
266 GLintptr offset
, GLsizeiptr size
)
268 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
269 const GLintptr end
= offset
+ size
;
270 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
271 obj
->Mappings
[MAP_USER
].Length
;
273 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
282 * Tests the subdata range parameters and sets the GL error code for
283 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
284 * \c glClearBufferSubData.
286 * \param ctx GL context.
287 * \param bufObj The buffer object.
288 * \param offset Offset of the first byte of the subdata range.
289 * \param size Size, in bytes, of the subdata range.
290 * \param mappedRange If true, checks if an overlapping range is mapped.
291 * If false, checks if buffer is mapped.
292 * \param caller Name of calling function for recording errors.
293 * \return false if error, true otherwise
295 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
298 buffer_object_subdata_range_good(struct gl_context
*ctx
,
299 const struct gl_buffer_object
*bufObj
,
300 GLintptr offset
, GLsizeiptr size
,
301 bool mappedRange
, const char *caller
)
304 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
309 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
313 if (offset
+ size
> bufObj
->Size
) {
314 _mesa_error(ctx
, GL_INVALID_VALUE
,
315 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
316 (unsigned long) offset
,
317 (unsigned long) size
,
318 (unsigned long) bufObj
->Size
);
322 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
326 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
328 "%s(range is mapped without persistent bit)",
334 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(buffer is mapped without persistent bit)",
347 * Test the format and type parameters and set the GL error code for
348 * \c glClearBufferData and \c glClearBufferSubData.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is to be converted.
352 * \param format Format of the supplied data.
353 * \param type Type of the supplied data.
354 * \param caller Name of calling function for recording errors.
355 * \return If internalformat, format and type are legal the mesa_format
356 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
358 * \sa glClearBufferData and glClearBufferSubData
361 validate_clear_buffer_format(struct gl_context
*ctx
,
362 GLenum internalformat
,
363 GLenum format
, GLenum type
,
366 mesa_format mesaFormat
;
367 GLenum errorFormatType
;
369 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
370 if (mesaFormat
== MESA_FORMAT_NONE
) {
371 _mesa_error(ctx
, GL_INVALID_ENUM
,
372 "%s(invalid internalformat)", caller
);
373 return MESA_FORMAT_NONE
;
376 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
377 * EXT_texture_integer there is no conversion between integer and
378 * non-integer formats
380 if (_mesa_is_enum_format_signed_int(format
) !=
381 _mesa_is_format_integer_color(mesaFormat
)) {
382 _mesa_error(ctx
, GL_INVALID_OPERATION
,
383 "%s(integer vs non-integer)", caller
);
384 return MESA_FORMAT_NONE
;
387 if (!_mesa_is_color_format(format
)) {
388 _mesa_error(ctx
, GL_INVALID_ENUM
,
389 "%s(format is not a color format)", caller
);
390 return MESA_FORMAT_NONE
;
393 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
394 if (errorFormatType
!= GL_NO_ERROR
) {
395 _mesa_error(ctx
, GL_INVALID_ENUM
,
396 "%s(invalid format or type)", caller
);
397 return MESA_FORMAT_NONE
;
405 * Convert user-specified clear value to the specified internal format.
407 * \param ctx GL context.
408 * \param internalformat Format to which the data is converted.
409 * \param clearValue Points to the converted clear value.
410 * \param format Format of the supplied data.
411 * \param type Type of the supplied data.
412 * \param data Data which is to be converted to internalformat.
413 * \param caller Name of calling function for recording errors.
414 * \return true if data could be converted, false otherwise.
416 * \sa glClearBufferData, glClearBufferSubData
419 convert_clear_buffer_data(struct gl_context
*ctx
,
420 mesa_format internalformat
,
421 GLubyte
*clearValue
, GLenum format
, GLenum type
,
422 const GLvoid
*data
, const char *caller
)
424 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
426 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
427 0, &clearValue
, 1, 1, 1,
428 format
, type
, data
, &ctx
->Unpack
)) {
432 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
439 * Allocate and initialize a new buffer object.
441 * Default callback for the \c dd_function_table::NewBufferObject() hook.
443 static struct gl_buffer_object
*
444 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
446 struct gl_buffer_object
*obj
;
450 obj
= MALLOC_STRUCT(gl_buffer_object
);
451 _mesa_initialize_buffer_object(ctx
, obj
, name
);
457 * Delete a buffer object.
459 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
462 _mesa_delete_buffer_object(struct gl_context
*ctx
,
463 struct gl_buffer_object
*bufObj
)
467 vbo_delete_minmax_cache(bufObj
);
468 _mesa_align_free(bufObj
->Data
);
470 /* assign strange values here to help w/ debugging */
471 bufObj
->RefCount
= -1000;
474 mtx_destroy(&bufObj
->Mutex
);
482 * Set ptr to bufObj w/ reference counting.
483 * This is normally only called from the _mesa_reference_buffer_object() macro
484 * when there's a real pointer change.
487 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
488 struct gl_buffer_object
**ptr
,
489 struct gl_buffer_object
*bufObj
)
492 /* Unreference the old buffer */
493 GLboolean deleteFlag
= GL_FALSE
;
494 struct gl_buffer_object
*oldObj
= *ptr
;
496 mtx_lock(&oldObj
->Mutex
);
497 assert(oldObj
->RefCount
> 0);
499 deleteFlag
= (oldObj
->RefCount
== 0);
500 mtx_unlock(&oldObj
->Mutex
);
503 assert(ctx
->Driver
.DeleteBuffer
);
504 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
512 /* reference new buffer */
513 mtx_lock(&bufObj
->Mutex
);
514 if (bufObj
->RefCount
== 0) {
515 /* this buffer's being deleted (look just above) */
516 /* Not sure this can every really happen. Warn if it does. */
517 _mesa_problem(NULL
, "referencing deleted buffer object");
524 mtx_unlock(&bufObj
->Mutex
);
530 * Get the value of MESA_NO_MINMAX_CACHE.
533 get_no_minmax_cache()
535 static bool read
= false;
536 static bool disable
= false;
539 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
548 * Initialize a buffer object to default values.
551 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
552 struct gl_buffer_object
*obj
,
555 memset(obj
, 0, sizeof(struct gl_buffer_object
));
556 mtx_init(&obj
->Mutex
, mtx_plain
);
559 obj
->Usage
= GL_STATIC_DRAW_ARB
;
561 if (get_no_minmax_cache())
562 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
568 * Callback called from _mesa_HashWalk()
571 count_buffer_size(GLuint key
, void *data
, void *userData
)
573 const struct gl_buffer_object
*bufObj
=
574 (const struct gl_buffer_object
*) data
;
575 GLuint
*total
= (GLuint
*) userData
;
578 *total
= *total
+ bufObj
->Size
;
583 * Compute total size (in bytes) of all buffer objects for the given context.
584 * For debugging purposes.
587 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
591 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
598 * Allocate space for and store data in a buffer object. Any data that was
599 * previously stored in the buffer object is lost. If \c data is \c NULL,
600 * memory will be allocated, but no copy will occur.
602 * This is the default callback for \c dd_function_table::BufferData()
603 * Note that all GL error checking will have been done already.
605 * \param ctx GL context.
606 * \param target Buffer object target on which to operate.
607 * \param size Size, in bytes, of the new data store.
608 * \param data Pointer to the data to store in the buffer object. This
609 * pointer may be \c NULL.
610 * \param usage Hints about how the data will be used.
611 * \param bufObj Object to be used.
613 * \return GL_TRUE for success, GL_FALSE for failure
614 * \sa glBufferDataARB, dd_function_table::BufferData.
617 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
618 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
619 struct gl_buffer_object
*bufObj
)
625 _mesa_align_free( bufObj
->Data
);
627 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
629 bufObj
->Data
= (GLubyte
*) new_data
;
631 bufObj
->Usage
= usage
;
632 bufObj
->StorageFlags
= storageFlags
;
635 memcpy( bufObj
->Data
, data
, size
);
647 * Replace data in a subrange of buffer object. If the data range
648 * specified by \c size + \c offset extends beyond the end of the buffer or
649 * if \c data is \c NULL, no copy is performed.
651 * This is the default callback for \c dd_function_table::BufferSubData()
652 * Note that all GL error checking will have been done already.
654 * \param ctx GL context.
655 * \param offset Offset of the first byte to be modified.
656 * \param size Size, in bytes, of the data range.
657 * \param data Pointer to the data to store in the buffer object.
658 * \param bufObj Object to be used.
660 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
663 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
664 GLsizeiptr size
, const GLvoid
*data
,
665 struct gl_buffer_object
*bufObj
)
669 /* this should have been caught in _mesa_BufferSubData() */
670 assert(size
+ offset
<= bufObj
->Size
);
673 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
679 * Retrieve data from a subrange of buffer object. If the data range
680 * specified by \c size + \c offset extends beyond the end of the buffer or
681 * if \c data is \c NULL, no copy is performed.
683 * This is the default callback for \c dd_function_table::GetBufferSubData()
684 * Note that all GL error checking will have been done already.
686 * \param ctx GL context.
687 * \param target Buffer object target on which to operate.
688 * \param offset Offset of the first byte to be fetched.
689 * \param size Size, in bytes, of the data range.
690 * \param data Destination for data
691 * \param bufObj Object to be used.
693 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
696 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
697 GLsizeiptrARB size
, GLvoid
* data
,
698 struct gl_buffer_object
* bufObj
)
702 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
703 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
709 * Clear a subrange of the buffer object with copies of the supplied data.
710 * If data is NULL the buffer is filled with zeros.
712 * This is the default callback for \c dd_function_table::ClearBufferSubData()
713 * Note that all GL error checking will have been done already.
715 * \param ctx GL context.
716 * \param offset Offset of the first byte to be cleared.
717 * \param size Size, in bytes, of the to be cleared range.
718 * \param clearValue Source of the data.
719 * \param clearValueSize Size, in bytes, of the supplied data.
720 * \param bufObj Object to be cleared.
722 * \sa glClearBufferSubData, glClearBufferData and
723 * dd_function_table::ClearBufferSubData.
726 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
727 GLintptr offset
, GLsizeiptr size
,
728 const GLvoid
*clearValue
,
729 GLsizeiptr clearValueSize
,
730 struct gl_buffer_object
*bufObj
)
735 assert(ctx
->Driver
.MapBufferRange
);
736 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
738 GL_MAP_INVALIDATE_RANGE_BIT
,
739 bufObj
, MAP_INTERNAL
);
742 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
746 if (clearValue
== NULL
) {
747 /* Clear with zeros, per the spec */
748 memset(dest
, 0, size
);
749 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
753 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
754 memcpy(dest
, clearValue
, clearValueSize
);
755 dest
+= clearValueSize
;
758 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
763 * Default fallback for \c dd_function_table::MapBufferRange().
764 * Called via glMapBufferRange().
767 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
768 GLsizeiptr length
, GLbitfield access
,
769 struct gl_buffer_object
*bufObj
,
770 gl_map_buffer_index index
)
773 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
774 /* Just return a direct pointer to the data */
775 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
776 bufObj
->Mappings
[index
].Length
= length
;
777 bufObj
->Mappings
[index
].Offset
= offset
;
778 bufObj
->Mappings
[index
].AccessFlags
= access
;
779 return bufObj
->Mappings
[index
].Pointer
;
784 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
785 * Called via glFlushMappedBufferRange().
788 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
789 GLintptr offset
, GLsizeiptr length
,
790 struct gl_buffer_object
*obj
,
791 gl_map_buffer_index index
)
803 * Default callback for \c dd_function_table::UnmapBuffer().
805 * The input parameters will have been already tested for errors.
807 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
810 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
811 gl_map_buffer_index index
)
814 /* XXX we might assert here that bufObj->Pointer is non-null */
815 bufObj
->Mappings
[index
].Pointer
= NULL
;
816 bufObj
->Mappings
[index
].Length
= 0;
817 bufObj
->Mappings
[index
].Offset
= 0;
818 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
824 * Default fallback for \c dd_function_table::CopyBufferSubData().
825 * Called via glCopyBufferSubData().
828 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
829 struct gl_buffer_object
*src
,
830 struct gl_buffer_object
*dst
,
831 GLintptr readOffset
, GLintptr writeOffset
,
834 GLubyte
*srcPtr
, *dstPtr
;
837 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
839 GL_MAP_WRITE_BIT
, src
,
845 srcPtr
+= readOffset
;
846 dstPtr
+= writeOffset
;
848 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
849 GL_MAP_READ_BIT
, src
,
851 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
853 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
857 /* Note: the src and dst regions will never overlap. Trying to do so
858 * would generate GL_INVALID_VALUE earlier.
860 if (srcPtr
&& dstPtr
)
861 memcpy(dstPtr
, srcPtr
, size
);
863 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
865 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
871 * Initialize the state associated with buffer objects
874 _mesa_init_buffer_objects( struct gl_context
*ctx
)
878 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
879 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
880 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
882 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
883 ctx
->Shared
->NullBufferObj
);
885 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
886 ctx
->Shared
->NullBufferObj
);
887 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
888 ctx
->Shared
->NullBufferObj
);
890 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
891 ctx
->Shared
->NullBufferObj
);
893 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
894 ctx
->Shared
->NullBufferObj
);
896 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
897 ctx
->Shared
->NullBufferObj
);
899 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
900 ctx
->Shared
->NullBufferObj
);
902 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
903 ctx
->Shared
->NullBufferObj
);
905 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
906 ctx
->Shared
->NullBufferObj
);
908 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
909 ctx
->Shared
->NullBufferObj
);
911 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
912 _mesa_reference_buffer_object(ctx
,
913 &ctx
->UniformBufferBindings
[i
].BufferObject
,
914 ctx
->Shared
->NullBufferObj
);
915 ctx
->UniformBufferBindings
[i
].Offset
= -1;
916 ctx
->UniformBufferBindings
[i
].Size
= -1;
919 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
920 _mesa_reference_buffer_object(ctx
,
921 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
922 ctx
->Shared
->NullBufferObj
);
923 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
924 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
927 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
928 _mesa_reference_buffer_object(ctx
,
929 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
930 ctx
->Shared
->NullBufferObj
);
931 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
932 ctx
->AtomicBufferBindings
[i
].Size
= 0;
938 _mesa_free_buffer_objects( struct gl_context
*ctx
)
942 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
944 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
945 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
947 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
949 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
951 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
953 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
955 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
957 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
959 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
961 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
962 _mesa_reference_buffer_object(ctx
,
963 &ctx
->UniformBufferBindings
[i
].BufferObject
,
967 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
968 _mesa_reference_buffer_object(ctx
,
969 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
973 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
974 _mesa_reference_buffer_object(ctx
,
975 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
982 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
984 struct gl_buffer_object
**buf_handle
,
987 struct gl_buffer_object
*buf
= *buf_handle
;
989 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
990 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
994 if (!buf
|| buf
== &DummyBufferObject
) {
995 /* If this is a new buffer object id, or one which was generated but
996 * never used before, allocate a buffer object now.
998 assert(ctx
->Driver
.NewBufferObject
);
999 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
1001 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
1004 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1012 * Bind the specified target to buffer for the specified context.
1013 * Called by glBindBuffer() and other functions.
1016 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
1018 struct gl_buffer_object
*oldBufObj
;
1019 struct gl_buffer_object
*newBufObj
= NULL
;
1020 struct gl_buffer_object
**bindTarget
= NULL
;
1022 bindTarget
= get_buffer_target(ctx
, target
);
1024 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1025 _mesa_enum_to_string(target
));
1029 /* Get pointer to old buffer object (to be unbound) */
1030 oldBufObj
= *bindTarget
;
1031 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1032 return; /* rebinding the same buffer object- no change */
1035 * Get pointer to new buffer object (newBufObj)
1038 /* The spec says there's not a buffer object named 0, but we use
1039 * one internally because it simplifies things.
1041 newBufObj
= ctx
->Shared
->NullBufferObj
;
1044 /* non-default buffer object */
1045 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1046 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1047 &newBufObj
, "glBindBuffer"))
1051 /* record usage history */
1053 case GL_PIXEL_PACK_BUFFER
:
1054 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1060 /* bind new buffer */
1061 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1066 * Update the default buffer objects in the given context to reference those
1067 * specified in the shared state and release those referencing the old
1071 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1073 /* Bind the NullBufferObj to remove references to those
1074 * in the shared context hash table.
1076 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
1077 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
1078 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
1079 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
1085 * Return the gl_buffer_object for the given ID.
1086 * Always return NULL for ID 0.
1088 struct gl_buffer_object
*
1089 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1094 return (struct gl_buffer_object
*)
1095 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1099 struct gl_buffer_object
*
1100 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1105 return (struct gl_buffer_object
*)
1106 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1110 * A convenience function for direct state access functions that throws
1111 * GL_INVALID_OPERATION if buffer is not the name of an existing
1114 struct gl_buffer_object
*
1115 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1118 struct gl_buffer_object
*bufObj
;
1120 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1121 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1122 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1123 "%s(non-existent buffer object %u)", caller
, buffer
);
1132 _mesa_begin_bufferobj_lookups(struct gl_context
*ctx
)
1134 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1139 _mesa_end_bufferobj_lookups(struct gl_context
*ctx
)
1141 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1146 * Look up a buffer object for a multi-bind function.
1148 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1149 * of generating an error if the buffer ID is not zero or the name
1150 * of an existing buffer object.
1152 * If the buffer ID refers to an existing buffer object, a pointer
1153 * to the buffer object is returned. If the ID is zero, a pointer
1154 * to the shared NullBufferObj is returned. If the ID is not zero
1155 * and does not refer to a valid buffer object, this function
1158 * This function assumes that the caller has already locked the
1159 * hash table mutex by calling _mesa_begin_bufferobj_lookups().
1161 struct gl_buffer_object
*
1162 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1163 const GLuint
*buffers
,
1164 GLuint index
, const char *caller
)
1166 struct gl_buffer_object
*bufObj
;
1168 if (buffers
[index
] != 0) {
1169 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1171 /* The multi-bind functions don't create the buffer objects
1172 when they don't exist. */
1173 if (bufObj
== &DummyBufferObject
)
1176 bufObj
= ctx
->Shared
->NullBufferObj
;
1179 /* The ARB_multi_bind spec says:
1181 * "An INVALID_OPERATION error is generated if any value
1182 * in <buffers> is not zero or the name of an existing
1183 * buffer object (per binding)."
1185 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1186 "%s(buffers[%u]=%u is not zero or the name "
1187 "of an existing buffer object)",
1188 caller
, index
, buffers
[index
]);
1196 * If *ptr points to obj, set ptr = the Null/default buffer object.
1197 * This is a helper for buffer object deletion.
1198 * The GL spec says that deleting a buffer object causes it to get
1199 * unbound from all arrays in the current context.
1202 unbind(struct gl_context
*ctx
,
1203 struct gl_vertex_array_object
*vao
, unsigned index
,
1204 struct gl_buffer_object
*obj
)
1206 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1207 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1208 vao
->BufferBinding
[index
].Offset
,
1209 vao
->BufferBinding
[index
].Stride
);
1215 * Plug default/fallback buffer object functions into the device
1219 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1221 /* GL_ARB_vertex/pixel_buffer_object */
1222 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1223 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1224 driver
->BufferData
= buffer_data_fallback
;
1225 driver
->BufferSubData
= buffer_sub_data_fallback
;
1226 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
1227 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1229 /* GL_ARB_clear_buffer_object */
1230 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1232 /* GL_ARB_map_buffer_range */
1233 driver
->MapBufferRange
= map_buffer_range_fallback
;
1234 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1236 /* GL_ARB_copy_buffer */
1237 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1242 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1243 struct gl_buffer_object
*bufObj
)
1247 for (i
= 0; i
< MAP_COUNT
; i
++) {
1248 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1249 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1250 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1251 bufObj
->Mappings
[i
].AccessFlags
= 0;
1257 /**********************************************************************/
1259 /**********************************************************************/
1262 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1264 GET_CURRENT_CONTEXT(ctx
);
1266 if (MESA_VERBOSE
& VERBOSE_API
) {
1267 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1268 _mesa_enum_to_string(target
), buffer
);
1271 bind_buffer_object(ctx
, target
, buffer
);
1276 * Delete a set of buffer objects.
1278 * \param n Number of buffer objects to delete.
1279 * \param ids Array of \c n buffer object IDs.
1282 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1284 GET_CURRENT_CONTEXT(ctx
);
1286 FLUSH_VERTICES(ctx
, 0);
1289 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1293 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1295 for (i
= 0; i
< n
; i
++) {
1296 struct gl_buffer_object
*bufObj
=
1297 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1299 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1302 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1304 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1306 /* unbind any vertex pointers bound to this buffer */
1307 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1308 unbind(ctx
, vao
, j
, bufObj
);
1311 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1312 _mesa_BindBuffer( GL_ARRAY_BUFFER_ARB
, 0 );
1314 if (vao
->IndexBufferObj
== bufObj
) {
1315 _mesa_BindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
1318 /* unbind ARB_draw_indirect binding point */
1319 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1320 _mesa_BindBuffer( GL_DRAW_INDIRECT_BUFFER
, 0 );
1323 /* unbind ARB_indirect_parameters binding point */
1324 if (ctx
->ParameterBuffer
== bufObj
) {
1325 _mesa_BindBuffer(GL_PARAMETER_BUFFER_ARB
, 0);
1328 /* unbind ARB_compute_shader binding point */
1329 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1330 _mesa_BindBuffer(GL_DISPATCH_INDIRECT_BUFFER
, 0);
1333 /* unbind ARB_copy_buffer binding points */
1334 if (ctx
->CopyReadBuffer
== bufObj
) {
1335 _mesa_BindBuffer( GL_COPY_READ_BUFFER
, 0 );
1337 if (ctx
->CopyWriteBuffer
== bufObj
) {
1338 _mesa_BindBuffer( GL_COPY_WRITE_BUFFER
, 0 );
1341 /* unbind transform feedback binding points */
1342 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1343 _mesa_BindBuffer( GL_TRANSFORM_FEEDBACK_BUFFER
, 0 );
1345 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1346 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1347 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1351 /* unbind UBO binding points */
1352 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1353 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1354 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1358 if (ctx
->UniformBuffer
== bufObj
) {
1359 _mesa_BindBuffer( GL_UNIFORM_BUFFER
, 0 );
1362 /* unbind SSBO binding points */
1363 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1364 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1365 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1369 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1370 _mesa_BindBuffer(GL_SHADER_STORAGE_BUFFER
, 0);
1373 /* unbind Atomci Buffer binding points */
1374 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1375 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1376 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1380 if (ctx
->AtomicBuffer
== bufObj
) {
1381 _mesa_BindBuffer( GL_ATOMIC_COUNTER_BUFFER
, 0 );
1384 /* unbind any pixel pack/unpack pointers bound to this buffer */
1385 if (ctx
->Pack
.BufferObj
== bufObj
) {
1386 _mesa_BindBuffer( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
1388 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1389 _mesa_BindBuffer( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
1392 if (ctx
->Texture
.BufferObject
== bufObj
) {
1393 _mesa_BindBuffer( GL_TEXTURE_BUFFER
, 0 );
1396 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1397 _mesa_BindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
, 0);
1400 /* unbind query buffer binding point */
1401 if (ctx
->QueryBuffer
== bufObj
) {
1402 _mesa_BindBuffer(GL_QUERY_BUFFER
, 0);
1405 /* The ID is immediately freed for re-use */
1406 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1407 /* Make sure we do not run into the classic ABA problem on bind.
1408 * We don't want to allow re-binding a buffer object that's been
1409 * "deleted" by glDeleteBuffers().
1411 * The explicit rebinding to the default object in the current context
1412 * prevents the above in the current context, but another context
1413 * sharing the same objects might suffer from this problem.
1414 * The alternative would be to do the hash lookup in any case on bind
1415 * which would introduce more runtime overhead than this.
1417 bufObj
->DeletePending
= GL_TRUE
;
1418 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1422 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1427 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1428 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1432 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1434 GET_CURRENT_CONTEXT(ctx
);
1437 struct gl_buffer_object
*buf
;
1439 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1441 if (MESA_VERBOSE
& VERBOSE_API
)
1442 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1445 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1454 * This must be atomic (generation and allocation of buffer object IDs)
1456 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1458 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1460 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1461 * DummyBufferObject. Otherwise, create a new buffer object and insert
1464 for (i
= 0; i
< n
; i
++) {
1465 buffers
[i
] = first
+ i
;
1467 assert(ctx
->Driver
.NewBufferObject
);
1468 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1470 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1471 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1476 buf
= &DummyBufferObject
;
1478 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1481 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1485 * Generate a set of unique buffer object IDs and store them in \c buffers.
1487 * \param n Number of IDs to generate.
1488 * \param buffers Array of \c n locations to store the IDs.
1491 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1493 create_buffers(n
, buffers
, false);
1497 * Create a set of buffer objects and store their unique IDs in \c buffers.
1499 * \param n Number of IDs to generate.
1500 * \param buffers Array of \c n locations to store the IDs.
1503 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1505 create_buffers(n
, buffers
, true);
1510 * Determine if ID is the name of a buffer object.
1512 * \param id ID of the potential buffer object.
1513 * \return \c GL_TRUE if \c id is the name of a buffer object,
1514 * \c GL_FALSE otherwise.
1516 GLboolean GLAPIENTRY
1517 _mesa_IsBuffer(GLuint id
)
1519 struct gl_buffer_object
*bufObj
;
1520 GET_CURRENT_CONTEXT(ctx
);
1521 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1523 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1525 return bufObj
&& bufObj
!= &DummyBufferObject
;
1530 _mesa_buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1531 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1532 GLbitfield flags
, const char *func
)
1535 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1539 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1541 GL_MAP_PERSISTENT_BIT
|
1542 GL_MAP_COHERENT_BIT
|
1543 GL_DYNAMIC_STORAGE_BIT
|
1544 GL_CLIENT_STORAGE_BIT
;
1546 if (ctx
->Extensions
.ARB_sparse_buffer
)
1547 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1549 if (flags
& ~valid_flags
) {
1550 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1554 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1556 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1557 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1558 * MAP_READ_BIT or MAP_WRITE_BIT."
1560 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1561 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1562 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1566 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1567 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1568 _mesa_error(ctx
, GL_INVALID_VALUE
,
1569 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1573 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1574 _mesa_error(ctx
, GL_INVALID_VALUE
,
1575 "%s(COHERENT and flags!=PERSISTENT)", func
);
1579 if (bufObj
->Immutable
) {
1580 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1584 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1585 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1587 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1589 bufObj
->Written
= GL_TRUE
;
1590 bufObj
->Immutable
= GL_TRUE
;
1591 bufObj
->MinMaxCacheDirty
= true;
1593 assert(ctx
->Driver
.BufferData
);
1594 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1596 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1597 /* Even though the interaction between AMD_pinned_memory and
1598 * glBufferStorage is not described in the spec, Graham Sellers
1599 * said that it should behave the same as glBufferData.
1601 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1604 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1610 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1613 GET_CURRENT_CONTEXT(ctx
);
1614 struct gl_buffer_object
*bufObj
;
1616 bufObj
= get_buffer(ctx
, "glBufferStorage", target
, GL_INVALID_OPERATION
);
1620 _mesa_buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
,
1625 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1628 GET_CURRENT_CONTEXT(ctx
);
1629 struct gl_buffer_object
*bufObj
;
1631 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferStorage");
1636 * In direct state access, buffer objects have an unspecified target since
1637 * they are not required to be bound.
1639 _mesa_buffer_storage(ctx
, bufObj
, GL_NONE
, size
, data
, flags
,
1640 "glNamedBufferStorage");
1645 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1646 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1647 GLenum usage
, const char *func
)
1651 if (MESA_VERBOSE
& VERBOSE_API
) {
1652 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1654 _mesa_enum_to_string(target
),
1655 (long int) size
, data
,
1656 _mesa_enum_to_string(usage
));
1660 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1665 case GL_STREAM_DRAW_ARB
:
1666 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1669 case GL_STATIC_DRAW_ARB
:
1670 case GL_DYNAMIC_DRAW_ARB
:
1674 case GL_STREAM_READ_ARB
:
1675 case GL_STREAM_COPY_ARB
:
1676 case GL_STATIC_READ_ARB
:
1677 case GL_STATIC_COPY_ARB
:
1678 case GL_DYNAMIC_READ_ARB
:
1679 case GL_DYNAMIC_COPY_ARB
:
1680 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1684 valid_usage
= false;
1689 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1690 _mesa_enum_to_string(usage
));
1694 if (bufObj
->Immutable
) {
1695 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1699 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1700 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1702 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1704 bufObj
->Written
= GL_TRUE
;
1705 bufObj
->MinMaxCacheDirty
= true;
1708 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1709 bufObj
->Name
, size
, data
, usage
);
1716 assert(ctx
->Driver
.BufferData
);
1717 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1720 GL_DYNAMIC_STORAGE_BIT
,
1722 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1723 /* From GL_AMD_pinned_memory:
1725 * INVALID_OPERATION is generated by BufferData if <target> is
1726 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1727 * mapped to the GPU address space.
1729 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1732 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1738 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1739 const GLvoid
*data
, GLenum usage
)
1741 GET_CURRENT_CONTEXT(ctx
);
1742 struct gl_buffer_object
*bufObj
;
1744 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1748 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1753 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1756 GET_CURRENT_CONTEXT(ctx
);
1757 struct gl_buffer_object
*bufObj
;
1759 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1763 /* In direct state access, buffer objects have an unspecified target since
1764 * they are not required to be bound.
1766 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1767 "glNamedBufferData");
1772 * Implementation for glBufferSubData and glNamedBufferSubData.
1774 * \param ctx GL context.
1775 * \param bufObj The buffer object.
1776 * \param offset Offset of the first byte of the subdata range.
1777 * \param size Size, in bytes, of the subdata range.
1778 * \param data The data store.
1779 * \param func Name of calling function for recording errors.
1783 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1784 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1787 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1789 /* error already recorded */
1793 if (bufObj
->Immutable
&&
1794 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1795 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1802 bufObj
->NumSubDataCalls
++;
1804 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1805 bufObj
->Usage
== GL_STATIC_COPY
) &&
1806 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
) {
1807 /* If the application declared the buffer as static draw/copy or stream
1808 * draw, it should not be frequently modified with glBufferSubData.
1810 BUFFER_USAGE_WARNING(ctx
,
1811 "using %s(buffer %u, offset %u, size %u) to "
1812 "update a %s buffer",
1813 func
, bufObj
->Name
, offset
, size
,
1814 _mesa_enum_to_string(bufObj
->Usage
));
1817 bufObj
->Written
= GL_TRUE
;
1818 bufObj
->MinMaxCacheDirty
= true;
1820 assert(ctx
->Driver
.BufferSubData
);
1821 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1825 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1826 GLsizeiptr size
, const GLvoid
*data
)
1828 GET_CURRENT_CONTEXT(ctx
);
1829 struct gl_buffer_object
*bufObj
;
1831 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1835 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1839 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1840 GLsizeiptr size
, const GLvoid
*data
)
1842 GET_CURRENT_CONTEXT(ctx
);
1843 struct gl_buffer_object
*bufObj
;
1845 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1849 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1850 "glNamedBufferSubData");
1855 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1856 GLsizeiptr size
, GLvoid
*data
)
1858 GET_CURRENT_CONTEXT(ctx
);
1859 struct gl_buffer_object
*bufObj
;
1861 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1862 GL_INVALID_OPERATION
);
1866 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1867 "glGetBufferSubData")) {
1871 assert(ctx
->Driver
.GetBufferSubData
);
1872 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1876 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1877 GLsizeiptr size
, GLvoid
*data
)
1879 GET_CURRENT_CONTEXT(ctx
);
1880 struct gl_buffer_object
*bufObj
;
1882 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1883 "glGetNamedBufferSubData");
1887 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1888 "glGetNamedBufferSubData")) {
1892 assert(ctx
->Driver
.GetBufferSubData
);
1893 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1898 * \param subdata true if caller is *SubData, false if *Data
1901 _mesa_clear_buffer_sub_data(struct gl_context
*ctx
,
1902 struct gl_buffer_object
*bufObj
,
1903 GLenum internalformat
,
1904 GLintptr offset
, GLsizeiptr size
,
1905 GLenum format
, GLenum type
,
1907 const char *func
, bool subdata
)
1909 mesa_format mesaFormat
;
1910 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1911 GLsizeiptr clearValueSize
;
1913 /* This checks for disallowed mappings. */
1914 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1919 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1920 format
, type
, func
);
1922 if (mesaFormat
== MESA_FORMAT_NONE
) {
1926 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1927 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1928 _mesa_error(ctx
, GL_INVALID_VALUE
,
1929 "%s(offset or size is not a multiple of "
1930 "internalformat size)", func
);
1934 /* Bail early. Negative size has already been checked. */
1938 bufObj
->MinMaxCacheDirty
= true;
1941 /* clear to zeros, per the spec */
1942 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1943 NULL
, clearValueSize
, bufObj
);
1947 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1948 format
, type
, data
, func
)) {
1952 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1953 clearValue
, clearValueSize
, bufObj
);
1957 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1958 GLenum type
, const GLvoid
*data
)
1960 GET_CURRENT_CONTEXT(ctx
);
1961 struct gl_buffer_object
*bufObj
;
1963 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1967 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1969 "glClearBufferData", false);
1973 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1974 GLenum format
, GLenum type
, const GLvoid
*data
)
1976 GET_CURRENT_CONTEXT(ctx
);
1977 struct gl_buffer_object
*bufObj
;
1979 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1983 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1985 "glClearNamedBufferData", false);
1990 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1991 GLintptr offset
, GLsizeiptr size
,
1992 GLenum format
, GLenum type
,
1995 GET_CURRENT_CONTEXT(ctx
);
1996 struct gl_buffer_object
*bufObj
;
1998 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2002 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2004 "glClearBufferSubData", true);
2008 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2009 GLintptr offset
, GLsizeiptr size
,
2010 GLenum format
, GLenum type
,
2013 GET_CURRENT_CONTEXT(ctx
);
2014 struct gl_buffer_object
*bufObj
;
2016 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2017 "glClearNamedBufferSubData");
2021 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2023 "glClearNamedBufferSubData", true);
2028 _mesa_unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2031 GLboolean status
= GL_TRUE
;
2032 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2034 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2035 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2036 "%s(buffer is not mapped)", func
);
2041 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2042 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2044 /* check that last 100 bytes are still = magic value */
2045 for (i
= 0; i
< 100; i
++) {
2046 GLuint pos
= bufObj
->Size
- i
- 1;
2047 if (buf
[pos
] != 123) {
2048 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2049 " at position %d (value = %u)\n",
2057 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2058 GLuint i
, unchanged
= 0;
2059 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2061 /* check which bytes changed */
2062 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2063 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2070 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2071 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2076 status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2077 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2078 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2079 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2080 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2085 GLboolean GLAPIENTRY
2086 _mesa_UnmapBuffer(GLenum target
)
2088 GET_CURRENT_CONTEXT(ctx
);
2089 struct gl_buffer_object
*bufObj
;
2091 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2095 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2098 GLboolean GLAPIENTRY
2099 _mesa_UnmapNamedBuffer(GLuint buffer
)
2101 GET_CURRENT_CONTEXT(ctx
);
2102 struct gl_buffer_object
*bufObj
;
2104 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2108 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2113 get_buffer_parameter(struct gl_context
*ctx
,
2114 struct gl_buffer_object
*bufObj
, GLenum pname
,
2115 GLint64
*params
, const char *func
)
2118 case GL_BUFFER_SIZE_ARB
:
2119 *params
= bufObj
->Size
;
2121 case GL_BUFFER_USAGE_ARB
:
2122 *params
= bufObj
->Usage
;
2124 case GL_BUFFER_ACCESS_ARB
:
2125 *params
= simplified_access_mode(ctx
,
2126 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2128 case GL_BUFFER_MAPPED_ARB
:
2129 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2131 case GL_BUFFER_ACCESS_FLAGS
:
2132 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2134 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2136 case GL_BUFFER_MAP_OFFSET
:
2137 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2139 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2141 case GL_BUFFER_MAP_LENGTH
:
2142 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2144 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2146 case GL_BUFFER_IMMUTABLE_STORAGE
:
2147 if (!ctx
->Extensions
.ARB_buffer_storage
)
2149 *params
= bufObj
->Immutable
;
2151 case GL_BUFFER_STORAGE_FLAGS
:
2152 if (!ctx
->Extensions
.ARB_buffer_storage
)
2154 *params
= bufObj
->StorageFlags
;
2163 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2164 _mesa_enum_to_string(pname
));
2169 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2171 GET_CURRENT_CONTEXT(ctx
);
2172 struct gl_buffer_object
*bufObj
;
2175 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2176 GL_INVALID_OPERATION
);
2180 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2181 "glGetBufferParameteriv"))
2182 return; /* Error already recorded. */
2184 *params
= (GLint
) parameter
;
2188 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2190 GET_CURRENT_CONTEXT(ctx
);
2191 struct gl_buffer_object
*bufObj
;
2194 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2195 GL_INVALID_OPERATION
);
2199 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2200 "glGetBufferParameteri64v"))
2201 return; /* Error already recorded. */
2203 *params
= parameter
;
2207 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2209 GET_CURRENT_CONTEXT(ctx
);
2210 struct gl_buffer_object
*bufObj
;
2213 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2214 "glGetNamedBufferParameteriv");
2218 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2219 "glGetNamedBufferParameteriv"))
2220 return; /* Error already recorded. */
2222 *params
= (GLint
) parameter
;
2226 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2229 GET_CURRENT_CONTEXT(ctx
);
2230 struct gl_buffer_object
*bufObj
;
2233 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2234 "glGetNamedBufferParameteri64v");
2238 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2239 "glGetNamedBufferParameteri64v"))
2240 return; /* Error already recorded. */
2242 *params
= parameter
;
2247 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2249 GET_CURRENT_CONTEXT(ctx
);
2250 struct gl_buffer_object
*bufObj
;
2252 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2253 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2254 "GL_BUFFER_MAP_POINTER)");
2258 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2259 GL_INVALID_OPERATION
);
2263 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2267 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2269 GET_CURRENT_CONTEXT(ctx
);
2270 struct gl_buffer_object
*bufObj
;
2272 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2273 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2274 "GL_BUFFER_MAP_POINTER)");
2278 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2279 "glGetNamedBufferPointerv");
2283 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2288 _mesa_copy_buffer_sub_data(struct gl_context
*ctx
,
2289 struct gl_buffer_object
*src
,
2290 struct gl_buffer_object
*dst
,
2291 GLintptr readOffset
, GLintptr writeOffset
,
2292 GLsizeiptr size
, const char *func
)
2294 if (_mesa_check_disallowed_mapping(src
)) {
2295 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2296 "%s(readBuffer is mapped)", func
);
2300 if (_mesa_check_disallowed_mapping(dst
)) {
2301 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2302 "%s(writeBuffer is mapped)", func
);
2306 if (readOffset
< 0) {
2307 _mesa_error(ctx
, GL_INVALID_VALUE
,
2308 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2312 if (writeOffset
< 0) {
2313 _mesa_error(ctx
, GL_INVALID_VALUE
,
2314 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2319 _mesa_error(ctx
, GL_INVALID_VALUE
,
2320 "%s(size %d < 0)", func
, (int) size
);
2324 if (readOffset
+ size
> src
->Size
) {
2325 _mesa_error(ctx
, GL_INVALID_VALUE
,
2326 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2327 (int) readOffset
, (int) size
, (int) src
->Size
);
2331 if (writeOffset
+ size
> dst
->Size
) {
2332 _mesa_error(ctx
, GL_INVALID_VALUE
,
2333 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2334 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2339 if (readOffset
+ size
<= writeOffset
) {
2342 else if (writeOffset
+ size
<= readOffset
) {
2346 /* overlapping src/dst is illegal */
2347 _mesa_error(ctx
, GL_INVALID_VALUE
,
2348 "%s(overlapping src/dst)", func
);
2353 dst
->MinMaxCacheDirty
= true;
2355 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2359 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2360 GLintptr readOffset
, GLintptr writeOffset
,
2363 GET_CURRENT_CONTEXT(ctx
);
2364 struct gl_buffer_object
*src
, *dst
;
2366 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2367 GL_INVALID_OPERATION
);
2371 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2372 GL_INVALID_OPERATION
);
2376 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2377 "glCopyBufferSubData");
2381 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2382 GLintptr readOffset
, GLintptr writeOffset
,
2385 GET_CURRENT_CONTEXT(ctx
);
2386 struct gl_buffer_object
*src
, *dst
;
2388 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2389 "glCopyNamedBufferSubData");
2393 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2394 "glCopyNamedBufferSubData");
2398 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2399 "glCopyNamedBufferSubData");
2404 _mesa_map_buffer_range(struct gl_context
*ctx
,
2405 struct gl_buffer_object
*bufObj
,
2406 GLintptr offset
, GLsizeiptr length
,
2407 GLbitfield access
, const char *func
)
2410 GLbitfield allowed_access
;
2412 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
2415 _mesa_error(ctx
, GL_INVALID_VALUE
,
2416 "%s(offset %ld < 0)", func
, (long) offset
);
2421 _mesa_error(ctx
, GL_INVALID_VALUE
,
2422 "%s(length %ld < 0)", func
, (long) length
);
2426 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2428 * "An INVALID_OPERATION error is generated for any of the following
2431 * * <length> is zero."
2433 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2434 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2438 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2442 allowed_access
= GL_MAP_READ_BIT
|
2444 GL_MAP_INVALIDATE_RANGE_BIT
|
2445 GL_MAP_INVALIDATE_BUFFER_BIT
|
2446 GL_MAP_FLUSH_EXPLICIT_BIT
|
2447 GL_MAP_UNSYNCHRONIZED_BIT
;
2449 if (ctx
->Extensions
.ARB_buffer_storage
) {
2450 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2451 GL_MAP_COHERENT_BIT
;
2454 if (access
& ~allowed_access
) {
2455 /* generate an error if any bits other than those allowed are set */
2456 _mesa_error(ctx
, GL_INVALID_VALUE
,
2457 "%s(access has undefined bits set)", func
);
2461 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2462 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2463 "%s(access indicates neither read or write)", func
);
2467 if ((access
& GL_MAP_READ_BIT
) &&
2468 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2469 GL_MAP_INVALIDATE_BUFFER_BIT
|
2470 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2471 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2472 "%s(read access with disallowed bits)", func
);
2476 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2477 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2478 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2479 "%s(access has flush explicit without write)", func
);
2483 if (access
& GL_MAP_READ_BIT
&&
2484 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2485 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2486 "%s(buffer does not allow read access)", func
);
2490 if (access
& GL_MAP_WRITE_BIT
&&
2491 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2492 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2493 "%s(buffer does not allow write access)", func
);
2497 if (access
& GL_MAP_COHERENT_BIT
&&
2498 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2499 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2500 "%s(buffer does not allow coherent access)", func
);
2504 if (access
& GL_MAP_PERSISTENT_BIT
&&
2505 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2506 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2507 "%s(buffer does not allow persistent access)", func
);
2511 if (offset
+ length
> bufObj
->Size
) {
2512 _mesa_error(ctx
, GL_INVALID_VALUE
,
2513 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2514 (unsigned long) offset
, (unsigned long) length
,
2515 (unsigned long) bufObj
->Size
);
2519 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2520 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2521 "%s(buffer already mapped)", func
);
2525 if (!bufObj
->Size
) {
2526 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2530 if (access
& GL_MAP_WRITE_BIT
) {
2531 bufObj
->NumMapBufferWriteCalls
++;
2532 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2533 bufObj
->Usage
== GL_STATIC_COPY
) &&
2534 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2535 BUFFER_USAGE_WARNING(ctx
,
2536 "using %s(buffer %u, offset %u, length %u) to "
2537 "update a %s buffer",
2538 func
, bufObj
->Name
, offset
, length
,
2539 _mesa_enum_to_string(bufObj
->Usage
));
2543 assert(ctx
->Driver
.MapBufferRange
);
2544 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2547 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2550 /* The driver callback should have set all these fields.
2551 * This is important because other modules (like VBO) might call
2552 * the driver function directly.
2554 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2555 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2556 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2557 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2560 if (access
& GL_MAP_WRITE_BIT
) {
2561 bufObj
->Written
= GL_TRUE
;
2562 bufObj
->MinMaxCacheDirty
= true;
2566 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2567 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2568 bufObj
->Name
, bufObj
->Size
, access
);
2569 /* Access must be write only */
2570 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2572 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2573 for (i
= 0; i
< bufObj
->Size
; i
++)
2580 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2581 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2583 /* buffer is 100 bytes larger than requested, fill with magic value */
2584 for (i
= 0; i
< 100; i
++) {
2585 buf
[bufObj
->Size
- i
- 1] = 123;
2594 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2597 GET_CURRENT_CONTEXT(ctx
);
2598 struct gl_buffer_object
*bufObj
;
2600 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2601 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2602 "glMapBufferRange(ARB_map_buffer_range not supported)");
2606 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2610 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2611 "glMapBufferRange");
2615 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2618 GET_CURRENT_CONTEXT(ctx
);
2619 struct gl_buffer_object
*bufObj
;
2621 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2622 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2623 "glMapNamedBufferRange("
2624 "ARB_map_buffer_range not supported)");
2628 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2632 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2633 "glMapNamedBufferRange");
2637 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2638 * flags for input to _mesa_map_buffer_range.
2640 * \return true if the type of requested access is permissible.
2643 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2647 case GL_READ_ONLY_ARB
:
2648 *flags
= GL_MAP_READ_BIT
;
2649 return _mesa_is_desktop_gl(ctx
);
2650 case GL_WRITE_ONLY_ARB
:
2651 *flags
= GL_MAP_WRITE_BIT
;
2653 case GL_READ_WRITE_ARB
:
2654 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2655 return _mesa_is_desktop_gl(ctx
);
2662 _mesa_MapBuffer(GLenum target
, GLenum access
)
2664 GET_CURRENT_CONTEXT(ctx
);
2665 struct gl_buffer_object
*bufObj
;
2666 GLbitfield accessFlags
;
2668 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2669 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2673 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2677 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2682 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2684 GET_CURRENT_CONTEXT(ctx
);
2685 struct gl_buffer_object
*bufObj
;
2686 GLbitfield accessFlags
;
2688 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2689 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2693 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2697 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2698 "glMapNamedBuffer");
2703 _mesa_flush_mapped_buffer_range(struct gl_context
*ctx
,
2704 struct gl_buffer_object
*bufObj
,
2705 GLintptr offset
, GLsizeiptr length
,
2708 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2709 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2710 "%s(ARB_map_buffer_range not supported)", func
);
2715 _mesa_error(ctx
, GL_INVALID_VALUE
,
2716 "%s(offset %ld < 0)", func
, (long) offset
);
2721 _mesa_error(ctx
, GL_INVALID_VALUE
,
2722 "%s(length %ld < 0)", func
, (long) length
);
2726 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2727 /* buffer is not mapped */
2728 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2729 "%s(buffer is not mapped)", func
);
2733 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2734 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2735 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2736 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2740 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2741 _mesa_error(ctx
, GL_INVALID_VALUE
,
2742 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2743 (long) offset
, (long) length
,
2744 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2748 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2750 if (ctx
->Driver
.FlushMappedBufferRange
)
2751 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2756 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2759 GET_CURRENT_CONTEXT(ctx
);
2760 struct gl_buffer_object
*bufObj
;
2762 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2763 GL_INVALID_OPERATION
);
2767 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2768 "glFlushMappedBufferRange");
2772 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2775 GET_CURRENT_CONTEXT(ctx
);
2776 struct gl_buffer_object
*bufObj
;
2778 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2779 "glFlushMappedNamedBufferRange");
2783 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2784 "glFlushMappedNamedBufferRange");
2789 * Binds a buffer object to a uniform buffer binding point.
2791 * The caller is responsible for flushing vertices and updating
2795 set_ubo_binding(struct gl_context
*ctx
,
2796 struct gl_uniform_buffer_binding
*binding
,
2797 struct gl_buffer_object
*bufObj
,
2802 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2804 binding
->Offset
= offset
;
2805 binding
->Size
= size
;
2806 binding
->AutomaticSize
= autoSize
;
2808 /* If this is a real buffer object, mark it has having been used
2809 * at some point as a UBO.
2812 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
2816 * Binds a buffer object to a shader storage buffer binding point.
2818 * The caller is responsible for flushing vertices and updating
2822 set_ssbo_binding(struct gl_context
*ctx
,
2823 struct gl_shader_storage_buffer_binding
*binding
,
2824 struct gl_buffer_object
*bufObj
,
2829 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2831 binding
->Offset
= offset
;
2832 binding
->Size
= size
;
2833 binding
->AutomaticSize
= autoSize
;
2835 /* If this is a real buffer object, mark it has having been used
2836 * at some point as a SSBO.
2839 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
2843 * Binds a buffer object to a uniform buffer binding point.
2845 * Unlike set_ubo_binding(), this function also flushes vertices
2846 * and updates NewDriverState. It also checks if the binding
2847 * has actually changed before updating it.
2850 bind_uniform_buffer(struct gl_context
*ctx
,
2852 struct gl_buffer_object
*bufObj
,
2857 struct gl_uniform_buffer_binding
*binding
=
2858 &ctx
->UniformBufferBindings
[index
];
2860 if (binding
->BufferObject
== bufObj
&&
2861 binding
->Offset
== offset
&&
2862 binding
->Size
== size
&&
2863 binding
->AutomaticSize
== autoSize
) {
2867 FLUSH_VERTICES(ctx
, 0);
2868 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
2870 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2874 * Binds a buffer object to a shader storage buffer binding point.
2876 * Unlike set_ssbo_binding(), this function also flushes vertices
2877 * and updates NewDriverState. It also checks if the binding
2878 * has actually changed before updating it.
2881 bind_shader_storage_buffer(struct gl_context
*ctx
,
2883 struct gl_buffer_object
*bufObj
,
2888 struct gl_shader_storage_buffer_binding
*binding
=
2889 &ctx
->ShaderStorageBufferBindings
[index
];
2891 if (binding
->BufferObject
== bufObj
&&
2892 binding
->Offset
== offset
&&
2893 binding
->Size
== size
&&
2894 binding
->AutomaticSize
== autoSize
) {
2898 FLUSH_VERTICES(ctx
, 0);
2899 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
2901 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2905 * Bind a region of a buffer object to a uniform block binding point.
2906 * \param index the uniform buffer binding point index
2907 * \param bufObj the buffer object
2908 * \param offset offset to the start of buffer object region
2909 * \param size size of the buffer object region
2912 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
2914 struct gl_buffer_object
*bufObj
,
2918 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2919 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2923 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
2924 _mesa_error(ctx
, GL_INVALID_VALUE
,
2925 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2926 ctx
->Const
.UniformBufferOffsetAlignment
);
2930 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2935 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2936 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2940 * Bind a region of a buffer object to a shader storage block binding point.
2941 * \param index the shader storage buffer binding point index
2942 * \param bufObj the buffer object
2943 * \param offset offset to the start of buffer object region
2944 * \param size size of the buffer object region
2947 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
2949 struct gl_buffer_object
*bufObj
,
2953 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
2954 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2958 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
2959 _mesa_error(ctx
, GL_INVALID_VALUE
,
2960 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2961 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
2965 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2970 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
2971 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2975 * Bind a buffer object to a uniform block binding point.
2976 * As above, but offset = 0.
2979 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
2981 struct gl_buffer_object
*bufObj
)
2983 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2984 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2988 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2990 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2991 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2993 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2997 * Bind a buffer object to a shader storage block binding point.
2998 * As above, but offset = 0.
3001 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
3003 struct gl_buffer_object
*bufObj
)
3005 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3006 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3010 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3012 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3013 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3015 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3019 * Binds a buffer object to an atomic buffer binding point.
3021 * The caller is responsible for validating the offset,
3022 * flushing the vertices and updating NewDriverState.
3025 set_atomic_buffer_binding(struct gl_context
*ctx
,
3026 struct gl_atomic_buffer_binding
*binding
,
3027 struct gl_buffer_object
*bufObj
,
3031 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3033 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3034 binding
->Offset
= 0;
3037 binding
->Offset
= offset
;
3038 binding
->Size
= size
;
3039 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3044 * Binds a buffer object to an atomic buffer binding point.
3046 * Unlike set_atomic_buffer_binding(), this function also validates the
3047 * index and offset, flushes vertices, and updates NewDriverState.
3048 * It also checks if the binding has actually changing before
3052 bind_atomic_buffer(struct gl_context
*ctx
,
3054 struct gl_buffer_object
*bufObj
,
3059 struct gl_atomic_buffer_binding
*binding
;
3061 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3062 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3066 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3067 _mesa_error(ctx
, GL_INVALID_VALUE
,
3068 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3069 ATOMIC_COUNTER_SIZE
);
3073 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3075 binding
= &ctx
->AtomicBufferBindings
[index
];
3076 if (binding
->BufferObject
== bufObj
&&
3077 binding
->Offset
== offset
&&
3078 binding
->Size
== size
) {
3082 FLUSH_VERTICES(ctx
, 0);
3083 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3085 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3089 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3091 const GLintptr
*offsets
,
3092 const GLsizeiptr
*sizes
)
3094 if (offsets
[index
] < 0) {
3095 /* The ARB_multi_bind spec says:
3097 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3098 * value in <offsets> is less than zero (per binding)."
3100 _mesa_error(ctx
, GL_INVALID_VALUE
,
3101 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3102 index
, (int64_t) offsets
[index
]);
3106 if (sizes
[index
] <= 0) {
3107 /* The ARB_multi_bind spec says:
3109 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3110 * value in <sizes> is less than or equal to zero (per binding)."
3112 _mesa_error(ctx
, GL_INVALID_VALUE
,
3113 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3114 index
, (int64_t) sizes
[index
]);
3122 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3123 GLuint first
, GLsizei count
,
3126 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3127 _mesa_error(ctx
, GL_INVALID_ENUM
,
3128 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3132 /* The ARB_multi_bind_spec says:
3134 * "An INVALID_OPERATION error is generated if <first> + <count> is
3135 * greater than the number of target-specific indexed binding points,
3136 * as described in section 6.7.1."
3138 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3139 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3140 "%s(first=%u + count=%d > the value of "
3141 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3142 caller
, first
, count
,
3143 ctx
->Const
.MaxUniformBufferBindings
);
3151 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3152 GLuint first
, GLsizei count
,
3155 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3156 _mesa_error(ctx
, GL_INVALID_ENUM
,
3157 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3161 /* The ARB_multi_bind_spec says:
3163 * "An INVALID_OPERATION error is generated if <first> + <count> is
3164 * greater than the number of target-specific indexed binding points,
3165 * as described in section 6.7.1."
3167 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3168 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3169 "%s(first=%u + count=%d > the value of "
3170 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3171 caller
, first
, count
,
3172 ctx
->Const
.MaxShaderStorageBufferBindings
);
3180 * Unbind all uniform buffers in the range
3181 * <first> through <first>+<count>-1
3184 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3186 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3189 for (i
= 0; i
< count
; i
++)
3190 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3191 bufObj
, -1, -1, GL_TRUE
);
3195 * Unbind all shader storage buffers in the range
3196 * <first> through <first>+<count>-1
3199 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3202 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3205 for (i
= 0; i
< count
; i
++)
3206 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3207 bufObj
, -1, -1, GL_TRUE
);
3211 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3212 const GLuint
*buffers
,
3214 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3219 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3222 /* Assume that at least one binding will be changed */
3223 FLUSH_VERTICES(ctx
, 0);
3224 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3227 /* The ARB_multi_bind spec says:
3229 * "If <buffers> is NULL, all bindings from <first> through
3230 * <first>+<count>-1 are reset to their unbound (zero) state.
3231 * In this case, the offsets and sizes associated with the
3232 * binding points are set to default values, ignoring
3233 * <offsets> and <sizes>."
3235 unbind_uniform_buffers(ctx
, first
, count
);
3239 /* Note that the error semantics for multi-bind commands differ from
3240 * those of other GL commands.
3242 * The Issues section in the ARB_multi_bind spec says:
3244 * "(11) Typically, OpenGL specifies that if an error is generated by a
3245 * command, that command has no effect. This is somewhat
3246 * unfortunate for multi-bind commands, because it would require a
3247 * first pass to scan the entire list of bound objects for errors
3248 * and then a second pass to actually perform the bindings.
3249 * Should we have different error semantics?
3251 * RESOLVED: Yes. In this specification, when the parameters for
3252 * one of the <count> binding points are invalid, that binding point
3253 * is not updated and an error will be generated. However, other
3254 * binding points in the same command will be updated if their
3255 * parameters are valid and no other error occurs."
3258 _mesa_begin_bufferobj_lookups(ctx
);
3260 for (i
= 0; i
< count
; i
++) {
3261 struct gl_uniform_buffer_binding
*binding
=
3262 &ctx
->UniformBufferBindings
[first
+ i
];
3263 struct gl_buffer_object
*bufObj
;
3264 GLintptr offset
= 0;
3265 GLsizeiptr size
= 0;
3268 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3271 /* The ARB_multi_bind spec says:
3273 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3274 * pair of values in <offsets> and <sizes> does not respectively
3275 * satisfy the constraints described for those parameters for the
3276 * specified target, as described in section 6.7.1 (per binding)."
3278 * Section 6.7.1 refers to table 6.5, which says:
3280 * "┌───────────────────────────────────────────────────────────────┐
3281 * │ Uniform buffer array bindings (see sec. 7.6) │
3282 * ├─────────────────────┬─────────────────────────────────────────┤
3284 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3285 * │ │ OFFSET_ALIGNMENT │
3287 * │ size restriction │ none │
3288 * └─────────────────────┴─────────────────────────────────────────┘"
3290 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3291 _mesa_error(ctx
, GL_INVALID_VALUE
,
3292 "glBindBuffersRange(offsets[%u]=%" PRId64
3293 " is misaligned; it must be a multiple of the value of "
3294 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3295 "target=GL_UNIFORM_BUFFER)",
3296 i
, (int64_t) offsets
[i
],
3297 ctx
->Const
.UniformBufferOffsetAlignment
);
3301 offset
= offsets
[i
];
3305 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3306 bufObj
= binding
->BufferObject
;
3308 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3311 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3312 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3314 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3318 _mesa_end_bufferobj_lookups(ctx
);
3322 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3323 GLsizei count
, const GLuint
*buffers
,
3325 const GLintptr
*offsets
,
3326 const GLsizeiptr
*sizes
,
3331 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3334 /* Assume that at least one binding will be changed */
3335 FLUSH_VERTICES(ctx
, 0);
3336 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3339 /* The ARB_multi_bind spec says:
3341 * "If <buffers> is NULL, all bindings from <first> through
3342 * <first>+<count>-1 are reset to their unbound (zero) state.
3343 * In this case, the offsets and sizes associated with the
3344 * binding points are set to default values, ignoring
3345 * <offsets> and <sizes>."
3347 unbind_shader_storage_buffers(ctx
, first
, count
);
3351 /* Note that the error semantics for multi-bind commands differ from
3352 * those of other GL commands.
3354 * The Issues section in the ARB_multi_bind spec says:
3356 * "(11) Typically, OpenGL specifies that if an error is generated by a
3357 * command, that command has no effect. This is somewhat
3358 * unfortunate for multi-bind commands, because it would require a
3359 * first pass to scan the entire list of bound objects for errors
3360 * and then a second pass to actually perform the bindings.
3361 * Should we have different error semantics?
3363 * RESOLVED: Yes. In this specification, when the parameters for
3364 * one of the <count> binding points are invalid, that binding point
3365 * is not updated and an error will be generated. However, other
3366 * binding points in the same command will be updated if their
3367 * parameters are valid and no other error occurs."
3370 _mesa_begin_bufferobj_lookups(ctx
);
3372 for (i
= 0; i
< count
; i
++) {
3373 struct gl_shader_storage_buffer_binding
*binding
=
3374 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3375 struct gl_buffer_object
*bufObj
;
3376 GLintptr offset
= 0;
3377 GLsizeiptr size
= 0;
3380 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3383 /* The ARB_multi_bind spec says:
3385 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3386 * pair of values in <offsets> and <sizes> does not respectively
3387 * satisfy the constraints described for those parameters for the
3388 * specified target, as described in section 6.7.1 (per binding)."
3390 * Section 6.7.1 refers to table 6.5, which says:
3392 * "┌───────────────────────────────────────────────────────────────┐
3393 * │ Shader storage buffer array bindings (see sec. 7.8) │
3394 * ├─────────────────────┬─────────────────────────────────────────┤
3396 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3397 * │ │ BUFFER_OFFSET_ALIGNMENT │
3399 * │ size restriction │ none │
3400 * └─────────────────────┴─────────────────────────────────────────┘"
3402 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3403 _mesa_error(ctx
, GL_INVALID_VALUE
,
3404 "glBindBuffersRange(offsets[%u]=%" PRId64
3405 " is misaligned; it must be a multiple of the value of "
3406 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3407 "target=GL_SHADER_STORAGE_BUFFER)",
3408 i
, (int64_t) offsets
[i
],
3409 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3413 offset
= offsets
[i
];
3417 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3418 bufObj
= binding
->BufferObject
;
3420 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3423 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3424 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3426 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3430 _mesa_end_bufferobj_lookups(ctx
);
3434 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3435 struct gl_transform_feedback_object
*tfObj
,
3436 GLuint first
, GLsizei count
, const char *caller
)
3438 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3439 _mesa_error(ctx
, GL_INVALID_ENUM
,
3440 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3444 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3446 * "An INVALID_OPERATION error is generated :
3449 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3450 * FEEDBACK_BUFFER and transform feedback is currently active."
3452 * We assume that this is also meant to apply to BindBuffersRange
3453 * and BindBuffersBase.
3455 if (tfObj
->Active
) {
3456 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3457 "%s(Changing transform feedback buffers while "
3458 "transform feedback is active)", caller
);
3462 /* The ARB_multi_bind_spec says:
3464 * "An INVALID_OPERATION error is generated if <first> + <count> is
3465 * greater than the number of target-specific indexed binding points,
3466 * as described in section 6.7.1."
3468 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3469 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3470 "%s(first=%u + count=%d > the value of "
3471 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3472 caller
, first
, count
,
3473 ctx
->Const
.MaxTransformFeedbackBuffers
);
3481 * Unbind all transform feedback buffers in the range
3482 * <first> through <first>+<count>-1
3485 unbind_xfb_buffers(struct gl_context
*ctx
,
3486 struct gl_transform_feedback_object
*tfObj
,
3487 GLuint first
, GLsizei count
)
3489 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3492 for (i
= 0; i
< count
; i
++)
3493 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3498 bind_xfb_buffers(struct gl_context
*ctx
,
3499 GLuint first
, GLsizei count
,
3500 const GLuint
*buffers
,
3502 const GLintptr
*offsets
,
3503 const GLsizeiptr
*sizes
,
3506 struct gl_transform_feedback_object
*tfObj
=
3507 ctx
->TransformFeedback
.CurrentObject
;
3510 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3513 /* Assume that at least one binding will be changed */
3514 FLUSH_VERTICES(ctx
, 0);
3515 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3518 /* The ARB_multi_bind spec says:
3520 * "If <buffers> is NULL, all bindings from <first> through
3521 * <first>+<count>-1 are reset to their unbound (zero) state.
3522 * In this case, the offsets and sizes associated with the
3523 * binding points are set to default values, ignoring
3524 * <offsets> and <sizes>."
3526 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3530 /* Note that the error semantics for multi-bind commands differ from
3531 * those of other GL commands.
3533 * The Issues section in the ARB_multi_bind spec says:
3535 * "(11) Typically, OpenGL specifies that if an error is generated by a
3536 * command, that command has no effect. This is somewhat
3537 * unfortunate for multi-bind commands, because it would require a
3538 * first pass to scan the entire list of bound objects for errors
3539 * and then a second pass to actually perform the bindings.
3540 * Should we have different error semantics?
3542 * RESOLVED: Yes. In this specification, when the parameters for
3543 * one of the <count> binding points are invalid, that binding point
3544 * is not updated and an error will be generated. However, other
3545 * binding points in the same command will be updated if their
3546 * parameters are valid and no other error occurs."
3549 _mesa_begin_bufferobj_lookups(ctx
);
3551 for (i
= 0; i
< count
; i
++) {
3552 const GLuint index
= first
+ i
;
3553 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3554 struct gl_buffer_object
*bufObj
;
3555 GLintptr offset
= 0;
3556 GLsizeiptr size
= 0;
3559 offset
= offsets
[i
];
3562 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3565 /* The ARB_multi_bind spec says:
3567 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3568 * pair of values in <offsets> and <sizes> does not respectively
3569 * satisfy the constraints described for those parameters for the
3570 * specified target, as described in section 6.7.1 (per binding)."
3572 * Section 6.7.1 refers to table 6.5, which says:
3574 * "┌───────────────────────────────────────────────────────────────┐
3575 * │ Transform feedback array bindings (see sec. 13.2.2) │
3576 * ├───────────────────────┬───────────────────────────────────────┤
3578 * │ offset restriction │ multiple of 4 │
3580 * │ size restriction │ multiple of 4 │
3581 * └───────────────────────┴───────────────────────────────────────┘"
3583 if (offsets
[i
] & 0x3) {
3584 _mesa_error(ctx
, GL_INVALID_VALUE
,
3585 "glBindBuffersRange(offsets[%u]=%" PRId64
3586 " is misaligned; it must be a multiple of 4 when "
3587 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3588 i
, (int64_t) offsets
[i
]);
3592 if (sizes
[i
] & 0x3) {
3593 _mesa_error(ctx
, GL_INVALID_VALUE
,
3594 "glBindBuffersRange(sizes[%u]=%" PRId64
3595 " is misaligned; it must be a multiple of 4 when "
3596 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3597 i
, (int64_t) sizes
[i
]);
3601 offset
= offsets
[i
];
3605 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3606 bufObj
= boundBufObj
;
3608 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3611 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3615 _mesa_end_bufferobj_lookups(ctx
);
3619 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3620 GLuint first
, GLsizei count
,
3623 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3624 _mesa_error(ctx
, GL_INVALID_ENUM
,
3625 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3629 /* The ARB_multi_bind_spec says:
3631 * "An INVALID_OPERATION error is generated if <first> + <count> is
3632 * greater than the number of target-specific indexed binding points,
3633 * as described in section 6.7.1."
3635 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3636 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3637 "%s(first=%u + count=%d > the value of "
3638 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3639 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3647 * Unbind all atomic counter buffers in the range
3648 * <first> through <first>+<count>-1
3651 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3653 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3656 for (i
= 0; i
< count
; i
++)
3657 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3662 bind_atomic_buffers(struct gl_context
*ctx
,
3665 const GLuint
*buffers
,
3667 const GLintptr
*offsets
,
3668 const GLsizeiptr
*sizes
,
3673 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3676 /* Assume that at least one binding will be changed */
3677 FLUSH_VERTICES(ctx
, 0);
3678 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3681 /* The ARB_multi_bind spec says:
3683 * "If <buffers> is NULL, all bindings from <first> through
3684 * <first>+<count>-1 are reset to their unbound (zero) state.
3685 * In this case, the offsets and sizes associated with the
3686 * binding points are set to default values, ignoring
3687 * <offsets> and <sizes>."
3689 unbind_atomic_buffers(ctx
, first
, count
);
3693 /* Note that the error semantics for multi-bind commands differ from
3694 * those of other GL commands.
3696 * The Issues section in the ARB_multi_bind spec says:
3698 * "(11) Typically, OpenGL specifies that if an error is generated by a
3699 * command, that command has no effect. This is somewhat
3700 * unfortunate for multi-bind commands, because it would require a
3701 * first pass to scan the entire list of bound objects for errors
3702 * and then a second pass to actually perform the bindings.
3703 * Should we have different error semantics?
3705 * RESOLVED: Yes. In this specification, when the parameters for
3706 * one of the <count> binding points are invalid, that binding point
3707 * is not updated and an error will be generated. However, other
3708 * binding points in the same command will be updated if their
3709 * parameters are valid and no other error occurs."
3712 _mesa_begin_bufferobj_lookups(ctx
);
3714 for (i
= 0; i
< count
; i
++) {
3715 struct gl_atomic_buffer_binding
*binding
=
3716 &ctx
->AtomicBufferBindings
[first
+ i
];
3717 struct gl_buffer_object
*bufObj
;
3718 GLintptr offset
= 0;
3719 GLsizeiptr size
= 0;
3722 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3725 /* The ARB_multi_bind spec says:
3727 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3728 * pair of values in <offsets> and <sizes> does not respectively
3729 * satisfy the constraints described for those parameters for the
3730 * specified target, as described in section 6.7.1 (per binding)."
3732 * Section 6.7.1 refers to table 6.5, which says:
3734 * "┌───────────────────────────────────────────────────────────────┐
3735 * │ Atomic counter array bindings (see sec. 7.7.2) │
3736 * ├───────────────────────┬───────────────────────────────────────┤
3738 * │ offset restriction │ multiple of 4 │
3740 * │ size restriction │ none │
3741 * └───────────────────────┴───────────────────────────────────────┘"
3743 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3744 _mesa_error(ctx
, GL_INVALID_VALUE
,
3745 "glBindBuffersRange(offsets[%u]=%" PRId64
3746 " is misaligned; it must be a multiple of %d when "
3747 "target=GL_ATOMIC_COUNTER_BUFFER)",
3748 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3752 offset
= offsets
[i
];
3756 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3757 bufObj
= binding
->BufferObject
;
3759 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3762 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3765 _mesa_end_bufferobj_lookups(ctx
);
3769 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3770 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3772 GET_CURRENT_CONTEXT(ctx
);
3773 struct gl_buffer_object
*bufObj
;
3775 if (MESA_VERBOSE
& VERBOSE_API
) {
3776 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
3777 _mesa_enum_to_string(target
), index
, buffer
,
3778 (unsigned long) offset
, (unsigned long) size
);
3782 bufObj
= ctx
->Shared
->NullBufferObj
;
3784 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3786 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3787 &bufObj
, "glBindBufferRange"))
3791 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3792 "glBindBufferRange(invalid buffer=%u)", buffer
);
3798 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3805 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3806 _mesa_bind_buffer_range_transform_feedback(ctx
,
3807 ctx
->TransformFeedback
.CurrentObject
,
3808 index
, bufObj
, offset
, size
,
3811 case GL_UNIFORM_BUFFER
:
3812 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3814 case GL_SHADER_STORAGE_BUFFER
:
3815 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3817 case GL_ATOMIC_COUNTER_BUFFER
:
3818 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3819 "glBindBufferRange");
3822 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
3828 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
3830 GET_CURRENT_CONTEXT(ctx
);
3831 struct gl_buffer_object
*bufObj
;
3833 if (MESA_VERBOSE
& VERBOSE_API
) {
3834 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
3835 _mesa_enum_to_string(target
), index
, buffer
);
3839 bufObj
= ctx
->Shared
->NullBufferObj
;
3841 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3843 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3844 &bufObj
, "glBindBufferBase"))
3848 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3849 "glBindBufferBase(invalid buffer=%u)", buffer
);
3853 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
3854 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
3856 * "BindBufferBase is equivalent to calling BindBufferRange with offset
3857 * zero and size equal to the size of buffer."
3859 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
3861 * "If the parameter (starting offset or size) was not specified when the
3862 * buffer object was bound, zero is returned."
3864 * What happens if the size of the buffer changes? Does the size of the
3865 * buffer at the moment glBindBufferBase was called still play a role, like
3866 * the first quote would imply, or is the size meaningless in the
3867 * glBindBufferBase case like the second quote would suggest? The GL 4.1
3868 * core spec page 45 says:
3870 * "It is equivalent to calling BindBufferRange with offset zero, while
3871 * size is determined by the size of the bound buffer at the time the
3874 * My interpretation is that the GL 4.1 spec was a clarification of the
3875 * behavior, not a change. In particular, this choice will only make
3876 * rendering work in cases where it would have had undefined results.
3880 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3881 _mesa_bind_buffer_base_transform_feedback(ctx
,
3882 ctx
->TransformFeedback
.CurrentObject
,
3883 index
, bufObj
, false);
3885 case GL_UNIFORM_BUFFER
:
3886 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
3888 case GL_SHADER_STORAGE_BUFFER
:
3889 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
3891 case GL_ATOMIC_COUNTER_BUFFER
:
3892 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
3893 "glBindBufferBase");
3896 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
3902 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
3903 const GLuint
*buffers
,
3904 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
3906 GET_CURRENT_CONTEXT(ctx
);
3908 if (MESA_VERBOSE
& VERBOSE_API
) {
3909 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
3910 _mesa_enum_to_string(target
), first
, count
,
3911 buffers
, offsets
, sizes
);
3915 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3916 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3917 "glBindBuffersRange");
3919 case GL_UNIFORM_BUFFER
:
3920 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3921 "glBindBuffersRange");
3923 case GL_SHADER_STORAGE_BUFFER
:
3924 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3925 "glBindBuffersRange");
3927 case GL_ATOMIC_COUNTER_BUFFER
:
3928 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3929 "glBindBuffersRange");
3932 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
3933 _mesa_enum_to_string(target
));
3939 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
3940 const GLuint
*buffers
)
3942 GET_CURRENT_CONTEXT(ctx
);
3944 if (MESA_VERBOSE
& VERBOSE_API
) {
3945 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
3946 _mesa_enum_to_string(target
), first
, count
, buffers
);
3950 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3951 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3952 "glBindBuffersBase");
3954 case GL_UNIFORM_BUFFER
:
3955 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3956 "glBindBuffersBase");
3958 case GL_SHADER_STORAGE_BUFFER
:
3959 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3960 "glBindBuffersBase");
3962 case GL_ATOMIC_COUNTER_BUFFER
:
3963 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3964 "glBindBuffersBase");
3967 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
3968 _mesa_enum_to_string(target
));
3974 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
3977 GET_CURRENT_CONTEXT(ctx
);
3978 struct gl_buffer_object
*bufObj
;
3979 const GLintptr end
= offset
+ length
;
3981 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
3982 * Profile) spec says:
3984 * "An INVALID_VALUE error is generated if buffer is zero or is not the
3985 * name of an existing buffer object."
3987 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3988 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
3989 _mesa_error(ctx
, GL_INVALID_VALUE
,
3990 "glInvalidateBufferSubData(name = %u) invalid object",
3995 /* The GL_ARB_invalidate_subdata spec says:
3997 * "An INVALID_VALUE error is generated if <offset> or <length> is
3998 * negative, or if <offset> + <length> is greater than the value of
4001 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4002 _mesa_error(ctx
, GL_INVALID_VALUE
,
4003 "glInvalidateBufferSubData(invalid offset or length)");
4007 /* The OpenGL 4.4 (Core Profile) spec says:
4009 * "An INVALID_OPERATION error is generated if buffer is currently
4010 * mapped by MapBuffer or if the invalidate range intersects the range
4011 * currently mapped by MapBufferRange, unless it was mapped
4012 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4014 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4015 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4016 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4017 "glInvalidateBufferSubData(intersection with mapped "
4022 if (ctx
->Driver
.InvalidateBufferSubData
)
4023 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4027 _mesa_InvalidateBufferData(GLuint buffer
)
4029 GET_CURRENT_CONTEXT(ctx
);
4030 struct gl_buffer_object
*bufObj
;
4032 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4033 * Profile) spec says:
4035 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4036 * name of an existing buffer object."
4038 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4039 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4040 _mesa_error(ctx
, GL_INVALID_VALUE
,
4041 "glInvalidateBufferData(name = %u) invalid object",
4046 /* The OpenGL 4.4 (Core Profile) spec says:
4048 * "An INVALID_OPERATION error is generated if buffer is currently
4049 * mapped by MapBuffer or if the invalidate range intersects the range
4050 * currently mapped by MapBufferRange, unless it was mapped
4051 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4053 if (_mesa_check_disallowed_mapping(bufObj
)) {
4054 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4055 "glInvalidateBufferData(intersection with mapped "
4060 if (ctx
->Driver
.InvalidateBufferSubData
)
4061 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, 0, bufObj
->Size
);
4065 buffer_page_commitment(struct gl_context
*ctx
,
4066 struct gl_buffer_object
*bufferObj
,
4067 GLintptr offset
, GLsizeiptr size
,
4068 GLboolean commit
, const char *func
)
4070 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4071 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4076 if (size
< 0 || size
> bufferObj
->Size
||
4077 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4078 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4083 /* The GL_ARB_sparse_buffer extension specification says:
4085 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4086 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4087 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4088 * not extend to the end of the buffer's data store."
4090 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4091 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4096 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4097 offset
+ size
!= bufferObj
->Size
) {
4098 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4103 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4107 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4110 GET_CURRENT_CONTEXT(ctx
);
4111 struct gl_buffer_object
*bufferObj
;
4113 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4118 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4119 "glBufferPageCommitmentARB");
4123 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4124 GLsizeiptr size
, GLboolean commit
)
4126 GET_CURRENT_CONTEXT(ctx
);
4127 struct gl_buffer_object
*bufferObj
;
4129 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4130 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4131 /* Note: the extension spec is not clear about the excpected error value. */
4132 _mesa_error(ctx
, GL_INVALID_VALUE
,
4133 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4138 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4139 "glNamedBufferPageCommitmentARB");