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 */
41 #include "bufferobj.h"
46 #include "glformats.h"
48 #include "transformfeedback.h"
54 /*#define BOUNDS_CHECK*/
58 * Used as a placeholder for buffer objects between glGenBuffers() and
59 * glBindBuffer() so that glIsBuffer() can work correctly.
61 static struct gl_buffer_object DummyBufferObject
;
65 * Return pointer to address of a buffer object target.
66 * \param ctx the GL context
67 * \param target the buffer object target to be retrieved.
68 * \return pointer to pointer to the buffer object bound to \c target in the
69 * specified context or \c NULL if \c target is invalid.
71 static inline struct gl_buffer_object
**
72 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
74 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
76 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
77 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
81 case GL_ARRAY_BUFFER_ARB
:
82 return &ctx
->Array
.ArrayBufferObj
;
83 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
84 return &ctx
->Array
.VAO
->IndexBufferObj
;
85 case GL_PIXEL_PACK_BUFFER_EXT
:
86 return &ctx
->Pack
.BufferObj
;
87 case GL_PIXEL_UNPACK_BUFFER_EXT
:
88 return &ctx
->Unpack
.BufferObj
;
89 case GL_COPY_READ_BUFFER
:
90 return &ctx
->CopyReadBuffer
;
91 case GL_COPY_WRITE_BUFFER
:
92 return &ctx
->CopyWriteBuffer
;
93 case GL_DRAW_INDIRECT_BUFFER
:
94 if (ctx
->API
== API_OPENGL_CORE
&&
95 ctx
->Extensions
.ARB_draw_indirect
) {
96 return &ctx
->DrawIndirectBuffer
;
99 case GL_TRANSFORM_FEEDBACK_BUFFER
:
100 if (ctx
->Extensions
.EXT_transform_feedback
) {
101 return &ctx
->TransformFeedback
.CurrentBuffer
;
104 case GL_TEXTURE_BUFFER
:
105 if (ctx
->API
== API_OPENGL_CORE
&&
106 ctx
->Extensions
.ARB_texture_buffer_object
) {
107 return &ctx
->Texture
.BufferObject
;
110 case GL_UNIFORM_BUFFER
:
111 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
112 return &ctx
->UniformBuffer
;
115 case GL_SHADER_STORAGE_BUFFER
:
116 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
117 return &ctx
->ShaderStorageBuffer
;
120 case GL_ATOMIC_COUNTER_BUFFER
:
121 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
122 return &ctx
->AtomicBuffer
;
125 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
126 if (ctx
->Extensions
.AMD_pinned_memory
) {
127 return &ctx
->ExternalVirtualMemoryBuffer
;
138 * Get the buffer object bound to the specified target in a GL context.
139 * \param ctx the GL context
140 * \param target the buffer object target to be retrieved.
141 * \param error the GL error to record if target is illegal.
142 * \return pointer to the buffer object bound to \c target in the
143 * specified context or \c NULL if \c target is invalid.
145 static inline struct gl_buffer_object
*
146 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
149 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
152 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
156 if (!_mesa_is_bufferobj(*bufObj
)) {
157 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
166 * Convert a GLbitfield describing the mapped buffer access flags
167 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
170 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
172 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
173 if ((access
& rwFlags
) == rwFlags
)
174 return GL_READ_WRITE
;
175 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
177 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
178 return GL_WRITE_ONLY
;
180 /* Otherwise, AccessFlags is zero (the default state).
182 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
184 * Name Type Initial Value Legal Values
186 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
189 * However, table 6.8 in the GL_OES_mapbuffer extension says:
191 * Get Value Type Get Command Value Description
192 * --------- ---- ----------- ----- -----------
193 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
195 * The difference is because GL_OES_mapbuffer only supports mapping buffers
200 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
205 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
207 * The regions do not overlap if and only if the end of the given
208 * region is before the mapped region or the start of the given region
209 * is after the mapped region.
211 * \param obj Buffer object target on which to operate.
212 * \param offset Offset of the first byte of the subdata range.
213 * \param size Size, in bytes, of the subdata range.
214 * \return true if ranges overlap, false otherwise
218 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
219 GLintptr offset
, GLsizeiptr size
)
221 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
222 const GLintptr end
= offset
+ size
;
223 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
224 obj
->Mappings
[MAP_USER
].Length
;
226 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
235 * Tests the subdata range parameters and sets the GL error code for
236 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
237 * \c glClearBufferSubData.
239 * \param ctx GL context.
240 * \param bufObj The buffer object.
241 * \param offset Offset of the first byte of the subdata range.
242 * \param size Size, in bytes, of the subdata range.
243 * \param mappedRange If true, checks if an overlapping range is mapped.
244 * If false, checks if buffer is mapped.
245 * \param caller Name of calling function for recording errors.
246 * \return false if error, true otherwise
248 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
251 buffer_object_subdata_range_good(struct gl_context
*ctx
,
252 struct gl_buffer_object
*bufObj
,
253 GLintptr offset
, GLsizeiptr size
,
254 bool mappedRange
, const char *caller
)
257 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
262 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
266 if (offset
+ size
> bufObj
->Size
) {
267 _mesa_error(ctx
, GL_INVALID_VALUE
,
268 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
269 (unsigned long) offset
,
270 (unsigned long) size
,
271 (unsigned long) bufObj
->Size
);
275 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
279 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
280 _mesa_error(ctx
, GL_INVALID_OPERATION
,
281 "%s(range is mapped without persistent bit)",
287 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
288 _mesa_error(ctx
, GL_INVALID_OPERATION
,
289 "%s(buffer is mapped without persistent bit)",
300 * Test the format and type parameters and set the GL error code for
301 * \c glClearBufferData and \c glClearBufferSubData.
303 * \param ctx GL context.
304 * \param internalformat Format to which the data is to be converted.
305 * \param format Format of the supplied data.
306 * \param type Type of the supplied data.
307 * \param caller Name of calling function for recording errors.
308 * \return If internalformat, format and type are legal the mesa_format
309 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
311 * \sa glClearBufferData and glClearBufferSubData
314 validate_clear_buffer_format(struct gl_context
*ctx
,
315 GLenum internalformat
,
316 GLenum format
, GLenum type
,
319 mesa_format mesaFormat
;
320 GLenum errorFormatType
;
322 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
323 if (mesaFormat
== MESA_FORMAT_NONE
) {
324 _mesa_error(ctx
, GL_INVALID_ENUM
,
325 "%s(invalid internalformat)", caller
);
326 return MESA_FORMAT_NONE
;
329 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
330 * EXT_texture_integer there is no conversion between integer and
331 * non-integer formats
333 if (_mesa_is_enum_format_signed_int(format
) !=
334 _mesa_is_format_integer_color(mesaFormat
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(integer vs non-integer)", caller
);
337 return MESA_FORMAT_NONE
;
340 if (!_mesa_is_color_format(format
)) {
341 _mesa_error(ctx
, GL_INVALID_ENUM
,
342 "%s(format is not a color format)", caller
);
343 return MESA_FORMAT_NONE
;
346 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
347 if (errorFormatType
!= GL_NO_ERROR
) {
348 _mesa_error(ctx
, GL_INVALID_ENUM
,
349 "%s(invalid format or type)", caller
);
350 return MESA_FORMAT_NONE
;
358 * Convert user-specified clear value to the specified internal format.
360 * \param ctx GL context.
361 * \param internalformat Format to which the data is converted.
362 * \param clearValue Points to the converted clear value.
363 * \param format Format of the supplied data.
364 * \param type Type of the supplied data.
365 * \param data Data which is to be converted to internalformat.
366 * \param caller Name of calling function for recording errors.
367 * \return true if data could be converted, false otherwise.
369 * \sa glClearBufferData, glClearBufferSubData
372 convert_clear_buffer_data(struct gl_context
*ctx
,
373 mesa_format internalformat
,
374 GLubyte
*clearValue
, GLenum format
, GLenum type
,
375 const GLvoid
*data
, const char *caller
)
377 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
379 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
380 0, &clearValue
, 1, 1, 1,
381 format
, type
, data
, &ctx
->Unpack
)) {
385 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
392 * Allocate and initialize a new buffer object.
394 * Default callback for the \c dd_function_table::NewBufferObject() hook.
396 static struct gl_buffer_object
*
397 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
399 struct gl_buffer_object
*obj
;
403 obj
= MALLOC_STRUCT(gl_buffer_object
);
404 _mesa_initialize_buffer_object(ctx
, obj
, name
);
410 * Delete a buffer object.
412 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
415 _mesa_delete_buffer_object(struct gl_context
*ctx
,
416 struct gl_buffer_object
*bufObj
)
420 _mesa_align_free(bufObj
->Data
);
422 /* assign strange values here to help w/ debugging */
423 bufObj
->RefCount
= -1000;
426 mtx_destroy(&bufObj
->Mutex
);
434 * Set ptr to bufObj w/ reference counting.
435 * This is normally only called from the _mesa_reference_buffer_object() macro
436 * when there's a real pointer change.
439 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
440 struct gl_buffer_object
**ptr
,
441 struct gl_buffer_object
*bufObj
)
444 /* Unreference the old buffer */
445 GLboolean deleteFlag
= GL_FALSE
;
446 struct gl_buffer_object
*oldObj
= *ptr
;
448 mtx_lock(&oldObj
->Mutex
);
449 assert(oldObj
->RefCount
> 0);
452 printf("BufferObj %p %d DECR to %d\n",
453 (void *) oldObj
, oldObj
->Name
, oldObj
->RefCount
);
455 deleteFlag
= (oldObj
->RefCount
== 0);
456 mtx_unlock(&oldObj
->Mutex
);
460 /* some sanity checking: don't delete a buffer still in use */
462 /* unfortunately, these tests are invalid during context tear-down */
463 assert(ctx
->Array
.ArrayBufferObj
!= bufObj
);
464 assert(ctx
->Array
.VAO
->IndexBufferObj
!= bufObj
);
465 assert(ctx
->Array
.VAO
->Vertex
.BufferObj
!= bufObj
);
468 assert(ctx
->Driver
.DeleteBuffer
);
469 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
477 /* reference new buffer */
478 mtx_lock(&bufObj
->Mutex
);
479 if (bufObj
->RefCount
== 0) {
480 /* this buffer's being deleted (look just above) */
481 /* Not sure this can every really happen. Warn if it does. */
482 _mesa_problem(NULL
, "referencing deleted buffer object");
488 printf("BufferObj %p %d INCR to %d\n",
489 (void *) bufObj
, bufObj
->Name
, bufObj
->RefCount
);
493 mtx_unlock(&bufObj
->Mutex
);
499 * Initialize a buffer object to default values.
502 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
503 struct gl_buffer_object
*obj
,
506 memset(obj
, 0, sizeof(struct gl_buffer_object
));
507 mtx_init(&obj
->Mutex
, mtx_plain
);
510 obj
->Usage
= GL_STATIC_DRAW_ARB
;
516 * Callback called from _mesa_HashWalk()
519 count_buffer_size(GLuint key
, void *data
, void *userData
)
521 const struct gl_buffer_object
*bufObj
=
522 (const struct gl_buffer_object
*) data
;
523 GLuint
*total
= (GLuint
*) userData
;
525 *total
= *total
+ bufObj
->Size
;
530 * Compute total size (in bytes) of all buffer objects for the given context.
531 * For debugging purposes.
534 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
538 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
545 * Allocate space for and store data in a buffer object. Any data that was
546 * previously stored in the buffer object is lost. If \c data is \c NULL,
547 * memory will be allocated, but no copy will occur.
549 * This is the default callback for \c dd_function_table::BufferData()
550 * Note that all GL error checking will have been done already.
552 * \param ctx GL context.
553 * \param target Buffer object target on which to operate.
554 * \param size Size, in bytes, of the new data store.
555 * \param data Pointer to the data to store in the buffer object. This
556 * pointer may be \c NULL.
557 * \param usage Hints about how the data will be used.
558 * \param bufObj Object to be used.
560 * \return GL_TRUE for success, GL_FALSE for failure
561 * \sa glBufferDataARB, dd_function_table::BufferData.
564 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
565 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
566 struct gl_buffer_object
*bufObj
)
572 _mesa_align_free( bufObj
->Data
);
574 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
576 bufObj
->Data
= (GLubyte
*) new_data
;
578 bufObj
->Usage
= usage
;
579 bufObj
->StorageFlags
= storageFlags
;
582 memcpy( bufObj
->Data
, data
, size
);
594 * Replace data in a subrange of buffer object. If the data range
595 * specified by \c size + \c offset extends beyond the end of the buffer or
596 * if \c data is \c NULL, no copy is performed.
598 * This is the default callback for \c dd_function_table::BufferSubData()
599 * Note that all GL error checking will have been done already.
601 * \param ctx GL context.
602 * \param offset Offset of the first byte to be modified.
603 * \param size Size, in bytes, of the data range.
604 * \param data Pointer to the data to store in the buffer object.
605 * \param bufObj Object to be used.
607 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
610 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
611 GLsizeiptr size
, const GLvoid
*data
,
612 struct gl_buffer_object
*bufObj
)
616 /* this should have been caught in _mesa_BufferSubData() */
617 assert(size
+ offset
<= bufObj
->Size
);
620 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
626 * Retrieve data from a subrange of buffer object. If the data range
627 * specified by \c size + \c offset extends beyond the end of the buffer or
628 * if \c data is \c NULL, no copy is performed.
630 * This is the default callback for \c dd_function_table::GetBufferSubData()
631 * Note that all GL error checking will have been done already.
633 * \param ctx GL context.
634 * \param target Buffer object target on which to operate.
635 * \param offset Offset of the first byte to be fetched.
636 * \param size Size, in bytes, of the data range.
637 * \param data Destination for data
638 * \param bufObj Object to be used.
640 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
643 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
644 GLsizeiptrARB size
, GLvoid
* data
,
645 struct gl_buffer_object
* bufObj
)
649 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
650 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
656 * Clear a subrange of the buffer object with copies of the supplied data.
657 * If data is NULL the buffer is filled with zeros.
659 * This is the default callback for \c dd_function_table::ClearBufferSubData()
660 * Note that all GL error checking will have been done already.
662 * \param ctx GL context.
663 * \param offset Offset of the first byte to be cleared.
664 * \param size Size, in bytes, of the to be cleared range.
665 * \param clearValue Source of the data.
666 * \param clearValueSize Size, in bytes, of the supplied data.
667 * \param bufObj Object to be cleared.
669 * \sa glClearBufferSubData, glClearBufferData and
670 * dd_function_table::ClearBufferSubData.
673 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
674 GLintptr offset
, GLsizeiptr size
,
675 const GLvoid
*clearValue
,
676 GLsizeiptr clearValueSize
,
677 struct gl_buffer_object
*bufObj
)
682 assert(ctx
->Driver
.MapBufferRange
);
683 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
685 GL_MAP_INVALIDATE_RANGE_BIT
,
686 bufObj
, MAP_INTERNAL
);
689 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
693 if (clearValue
== NULL
) {
694 /* Clear with zeros, per the spec */
695 memset(dest
, 0, size
);
696 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
700 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
701 memcpy(dest
, clearValue
, clearValueSize
);
702 dest
+= clearValueSize
;
705 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
710 * Default fallback for \c dd_function_table::MapBufferRange().
711 * Called via glMapBufferRange().
714 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
715 GLsizeiptr length
, GLbitfield access
,
716 struct gl_buffer_object
*bufObj
,
717 gl_map_buffer_index index
)
720 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
721 /* Just return a direct pointer to the data */
722 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
723 bufObj
->Mappings
[index
].Length
= length
;
724 bufObj
->Mappings
[index
].Offset
= offset
;
725 bufObj
->Mappings
[index
].AccessFlags
= access
;
726 return bufObj
->Mappings
[index
].Pointer
;
731 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
732 * Called via glFlushMappedBufferRange().
735 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
736 GLintptr offset
, GLsizeiptr length
,
737 struct gl_buffer_object
*obj
,
738 gl_map_buffer_index index
)
749 * Default callback for \c dd_function_table::UnmapBuffer().
751 * The input parameters will have been already tested for errors.
753 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
756 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
757 gl_map_buffer_index index
)
760 /* XXX we might assert here that bufObj->Pointer is non-null */
761 bufObj
->Mappings
[index
].Pointer
= NULL
;
762 bufObj
->Mappings
[index
].Length
= 0;
763 bufObj
->Mappings
[index
].Offset
= 0;
764 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
770 * Default fallback for \c dd_function_table::CopyBufferSubData().
771 * Called via glCopyBufferSubData().
774 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
775 struct gl_buffer_object
*src
,
776 struct gl_buffer_object
*dst
,
777 GLintptr readOffset
, GLintptr writeOffset
,
780 GLubyte
*srcPtr
, *dstPtr
;
783 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
785 GL_MAP_WRITE_BIT
, src
,
791 srcPtr
+= readOffset
;
792 dstPtr
+= writeOffset
;
794 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
795 GL_MAP_READ_BIT
, src
,
797 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
799 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
803 /* Note: the src and dst regions will never overlap. Trying to do so
804 * would generate GL_INVALID_VALUE earlier.
806 if (srcPtr
&& dstPtr
)
807 memcpy(dstPtr
, srcPtr
, size
);
809 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
811 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
817 * Initialize the state associated with buffer objects
820 _mesa_init_buffer_objects( struct gl_context
*ctx
)
824 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
825 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
826 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
828 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
829 ctx
->Shared
->NullBufferObj
);
831 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
832 ctx
->Shared
->NullBufferObj
);
833 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
834 ctx
->Shared
->NullBufferObj
);
836 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
837 ctx
->Shared
->NullBufferObj
);
839 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
840 ctx
->Shared
->NullBufferObj
);
842 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
843 ctx
->Shared
->NullBufferObj
);
845 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
846 ctx
->Shared
->NullBufferObj
);
848 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
849 _mesa_reference_buffer_object(ctx
,
850 &ctx
->UniformBufferBindings
[i
].BufferObject
,
851 ctx
->Shared
->NullBufferObj
);
852 ctx
->UniformBufferBindings
[i
].Offset
= -1;
853 ctx
->UniformBufferBindings
[i
].Size
= -1;
856 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
857 _mesa_reference_buffer_object(ctx
,
858 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
859 ctx
->Shared
->NullBufferObj
);
860 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
861 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
864 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
865 _mesa_reference_buffer_object(ctx
,
866 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
867 ctx
->Shared
->NullBufferObj
);
868 ctx
->AtomicBufferBindings
[i
].Offset
= -1;
869 ctx
->AtomicBufferBindings
[i
].Size
= -1;
875 _mesa_free_buffer_objects( struct gl_context
*ctx
)
879 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
881 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
882 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
884 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
886 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
888 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
890 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
892 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
893 _mesa_reference_buffer_object(ctx
,
894 &ctx
->UniformBufferBindings
[i
].BufferObject
,
898 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
899 _mesa_reference_buffer_object(ctx
,
900 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
904 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
905 _mesa_reference_buffer_object(ctx
,
906 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
913 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
916 struct gl_buffer_object
**buf_handle
,
919 struct gl_buffer_object
*buf
= *buf_handle
;
921 if (!buf
&& ctx
->API
== API_OPENGL_CORE
) {
922 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
926 if (!buf
|| buf
== &DummyBufferObject
) {
927 /* If this is a new buffer object id, or one which was generated but
928 * never used before, allocate a buffer object now.
930 assert(ctx
->Driver
.NewBufferObject
);
931 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
933 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
936 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
944 * Bind the specified target to buffer for the specified context.
945 * Called by glBindBuffer() and other functions.
948 bind_buffer_object(struct gl_context
*ctx
, GLenum target
, GLuint buffer
)
950 struct gl_buffer_object
*oldBufObj
;
951 struct gl_buffer_object
*newBufObj
= NULL
;
952 struct gl_buffer_object
**bindTarget
= NULL
;
954 bindTarget
= get_buffer_target(ctx
, target
);
956 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target 0x%x)", target
);
960 /* Get pointer to old buffer object (to be unbound) */
961 oldBufObj
= *bindTarget
;
962 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
963 return; /* rebinding the same buffer object- no change */
966 * Get pointer to new buffer object (newBufObj)
969 /* The spec says there's not a buffer object named 0, but we use
970 * one internally because it simplifies things.
972 newBufObj
= ctx
->Shared
->NullBufferObj
;
975 /* non-default buffer object */
976 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
977 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
978 &newBufObj
, "glBindBuffer"))
982 /* bind new buffer */
983 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
988 * Update the default buffer objects in the given context to reference those
989 * specified in the shared state and release those referencing the old
993 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
995 /* Bind the NullBufferObj to remove references to those
996 * in the shared context hash table.
998 bind_buffer_object( ctx
, GL_ARRAY_BUFFER_ARB
, 0);
999 bind_buffer_object( ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, 0);
1000 bind_buffer_object( ctx
, GL_PIXEL_PACK_BUFFER_ARB
, 0);
1001 bind_buffer_object( ctx
, GL_PIXEL_UNPACK_BUFFER_ARB
, 0);
1007 * Return the gl_buffer_object for the given ID.
1008 * Always return NULL for ID 0.
1010 struct gl_buffer_object
*
1011 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1016 return (struct gl_buffer_object
*)
1017 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1021 struct gl_buffer_object
*
1022 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1024 return (struct gl_buffer_object
*)
1025 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1029 * A convenience function for direct state access functions that throws
1030 * GL_INVALID_OPERATION if buffer is not the name of an existing
1033 struct gl_buffer_object
*
1034 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1037 struct gl_buffer_object
*bufObj
;
1039 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1040 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1041 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1042 "%s(non-existent buffer object %u)", caller
, buffer
);
1051 _mesa_begin_bufferobj_lookups(struct gl_context
*ctx
)
1053 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1058 _mesa_end_bufferobj_lookups(struct gl_context
*ctx
)
1060 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1065 * Look up a buffer object for a multi-bind function.
1067 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1068 * of generating an error if the buffer ID is not zero or the name
1069 * of an existing buffer object.
1071 * If the buffer ID refers to an existing buffer object, a pointer
1072 * to the buffer object is returned. If the ID is zero, a pointer
1073 * to the shared NullBufferObj is returned. If the ID is not zero
1074 * and does not refer to a valid buffer object, this function
1077 * This function assumes that the caller has already locked the
1078 * hash table mutex by calling _mesa_begin_bufferobj_lookups().
1080 struct gl_buffer_object
*
1081 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1082 const GLuint
*buffers
,
1083 GLuint index
, const char *caller
)
1085 struct gl_buffer_object
*bufObj
;
1087 if (buffers
[index
] != 0) {
1088 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1090 /* The multi-bind functions don't create the buffer objects
1091 when they don't exist. */
1092 if (bufObj
== &DummyBufferObject
)
1095 bufObj
= ctx
->Shared
->NullBufferObj
;
1098 /* The ARB_multi_bind spec says:
1100 * "An INVALID_OPERATION error is generated if any value
1101 * in <buffers> is not zero or the name of an existing
1102 * buffer object (per binding)."
1104 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1105 "%s(buffers[%u]=%u is not zero or the name "
1106 "of an existing buffer object)",
1107 caller
, index
, buffers
[index
]);
1115 * If *ptr points to obj, set ptr = the Null/default buffer object.
1116 * This is a helper for buffer object deletion.
1117 * The GL spec says that deleting a buffer object causes it to get
1118 * unbound from all arrays in the current context.
1121 unbind(struct gl_context
*ctx
,
1122 struct gl_buffer_object
**ptr
,
1123 struct gl_buffer_object
*obj
)
1126 _mesa_reference_buffer_object(ctx
, ptr
, ctx
->Shared
->NullBufferObj
);
1132 * Plug default/fallback buffer object functions into the device
1136 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1138 /* GL_ARB_vertex/pixel_buffer_object */
1139 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1140 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1141 driver
->BufferData
= buffer_data_fallback
;
1142 driver
->BufferSubData
= buffer_sub_data_fallback
;
1143 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
1144 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1146 /* GL_ARB_clear_buffer_object */
1147 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1149 /* GL_ARB_map_buffer_range */
1150 driver
->MapBufferRange
= map_buffer_range_fallback
;
1151 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1153 /* GL_ARB_copy_buffer */
1154 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1159 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1160 struct gl_buffer_object
*bufObj
)
1164 for (i
= 0; i
< MAP_COUNT
; i
++) {
1165 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1166 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1167 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1168 bufObj
->Mappings
[i
].AccessFlags
= 0;
1174 /**********************************************************************/
1176 /**********************************************************************/
1179 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1181 GET_CURRENT_CONTEXT(ctx
);
1183 if (MESA_VERBOSE
& VERBOSE_API
)
1184 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1185 _mesa_lookup_enum_by_nr(target
), buffer
);
1187 bind_buffer_object(ctx
, target
, buffer
);
1192 * Delete a set of buffer objects.
1194 * \param n Number of buffer objects to delete.
1195 * \param ids Array of \c n buffer object IDs.
1198 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1200 GET_CURRENT_CONTEXT(ctx
);
1202 FLUSH_VERTICES(ctx
, 0);
1205 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1209 mtx_lock(&ctx
->Shared
->Mutex
);
1211 for (i
= 0; i
< n
; i
++) {
1212 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, ids
[i
]);
1214 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1217 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1219 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1221 /* unbind any vertex pointers bound to this buffer */
1222 for (j
= 0; j
< ARRAY_SIZE(vao
->VertexBinding
); j
++) {
1223 unbind(ctx
, &vao
->VertexBinding
[j
].BufferObj
, bufObj
);
1226 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1227 _mesa_BindBuffer( GL_ARRAY_BUFFER_ARB
, 0 );
1229 if (vao
->IndexBufferObj
== bufObj
) {
1230 _mesa_BindBuffer( GL_ELEMENT_ARRAY_BUFFER_ARB
, 0 );
1233 /* unbind ARB_draw_indirect binding point */
1234 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1235 _mesa_BindBuffer( GL_DRAW_INDIRECT_BUFFER
, 0 );
1238 /* unbind ARB_copy_buffer binding points */
1239 if (ctx
->CopyReadBuffer
== bufObj
) {
1240 _mesa_BindBuffer( GL_COPY_READ_BUFFER
, 0 );
1242 if (ctx
->CopyWriteBuffer
== bufObj
) {
1243 _mesa_BindBuffer( GL_COPY_WRITE_BUFFER
, 0 );
1246 /* unbind transform feedback binding points */
1247 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1248 _mesa_BindBuffer( GL_TRANSFORM_FEEDBACK_BUFFER
, 0 );
1250 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1251 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1252 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1256 /* unbind UBO binding points */
1257 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1258 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1259 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1263 if (ctx
->UniformBuffer
== bufObj
) {
1264 _mesa_BindBuffer( GL_UNIFORM_BUFFER
, 0 );
1267 /* unbind Atomci Buffer binding points */
1268 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1269 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1270 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1274 if (ctx
->AtomicBuffer
== bufObj
) {
1275 _mesa_BindBuffer( GL_ATOMIC_COUNTER_BUFFER
, 0 );
1278 /* unbind any pixel pack/unpack pointers bound to this buffer */
1279 if (ctx
->Pack
.BufferObj
== bufObj
) {
1280 _mesa_BindBuffer( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
1282 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1283 _mesa_BindBuffer( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
1286 if (ctx
->Texture
.BufferObject
== bufObj
) {
1287 _mesa_BindBuffer( GL_TEXTURE_BUFFER
, 0 );
1290 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1291 _mesa_BindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
, 0);
1294 /* The ID is immediately freed for re-use */
1295 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
1296 /* Make sure we do not run into the classic ABA problem on bind.
1297 * We don't want to allow re-binding a buffer object that's been
1298 * "deleted" by glDeleteBuffers().
1300 * The explicit rebinding to the default object in the current context
1301 * prevents the above in the current context, but another context
1302 * sharing the same objects might suffer from this problem.
1303 * The alternative would be to do the hash lookup in any case on bind
1304 * which would introduce more runtime overhead than this.
1306 bufObj
->DeletePending
= GL_TRUE
;
1307 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1311 mtx_unlock(&ctx
->Shared
->Mutex
);
1316 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1317 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1321 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1323 GET_CURRENT_CONTEXT(ctx
);
1326 struct gl_buffer_object
*buf
;
1328 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1330 if (MESA_VERBOSE
& VERBOSE_API
)
1331 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1334 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1343 * This must be atomic (generation and allocation of buffer object IDs)
1345 mtx_lock(&ctx
->Shared
->Mutex
);
1347 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1349 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1350 * DummyBufferObject. Otherwise, create a new buffer object and insert
1353 for (i
= 0; i
< n
; i
++) {
1354 buffers
[i
] = first
+ i
;
1356 assert(ctx
->Driver
.NewBufferObject
);
1357 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1359 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1360 mtx_unlock(&ctx
->Shared
->Mutex
);
1365 buf
= &DummyBufferObject
;
1367 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1370 mtx_unlock(&ctx
->Shared
->Mutex
);
1374 * Generate a set of unique buffer object IDs and store them in \c buffers.
1376 * \param n Number of IDs to generate.
1377 * \param buffers Array of \c n locations to store the IDs.
1380 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1382 create_buffers(n
, buffers
, false);
1386 * Create a set of buffer objects and store their unique IDs in \c buffers.
1388 * \param n Number of IDs to generate.
1389 * \param buffers Array of \c n locations to store the IDs.
1392 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1394 create_buffers(n
, buffers
, true);
1399 * Determine if ID is the name of a buffer object.
1401 * \param id ID of the potential buffer object.
1402 * \return \c GL_TRUE if \c id is the name of a buffer object,
1403 * \c GL_FALSE otherwise.
1405 GLboolean GLAPIENTRY
1406 _mesa_IsBuffer(GLuint id
)
1408 struct gl_buffer_object
*bufObj
;
1409 GET_CURRENT_CONTEXT(ctx
);
1410 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1412 mtx_lock(&ctx
->Shared
->Mutex
);
1413 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1414 mtx_unlock(&ctx
->Shared
->Mutex
);
1416 return bufObj
&& bufObj
!= &DummyBufferObject
;
1421 _mesa_buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1422 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1423 GLbitfield flags
, const char *func
)
1426 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1430 if (flags
& ~(GL_MAP_READ_BIT
|
1432 GL_MAP_PERSISTENT_BIT
|
1433 GL_MAP_COHERENT_BIT
|
1434 GL_DYNAMIC_STORAGE_BIT
|
1435 GL_CLIENT_STORAGE_BIT
)) {
1436 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1440 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1441 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1442 _mesa_error(ctx
, GL_INVALID_VALUE
,
1443 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1447 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1448 _mesa_error(ctx
, GL_INVALID_VALUE
,
1449 "%s(COHERENT and flags!=PERSISTENT)", func
);
1453 if (bufObj
->Immutable
) {
1454 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1458 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1459 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1461 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1463 bufObj
->Written
= GL_TRUE
;
1464 bufObj
->Immutable
= GL_TRUE
;
1466 assert(ctx
->Driver
.BufferData
);
1467 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1469 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1470 /* Even though the interaction between AMD_pinned_memory and
1471 * glBufferStorage is not described in the spec, Graham Sellers
1472 * said that it should behave the same as glBufferData.
1474 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1477 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1483 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1486 GET_CURRENT_CONTEXT(ctx
);
1487 struct gl_buffer_object
*bufObj
;
1489 bufObj
= get_buffer(ctx
, "glBufferStorage", target
, GL_INVALID_OPERATION
);
1493 _mesa_buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
,
1498 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1501 GET_CURRENT_CONTEXT(ctx
);
1502 struct gl_buffer_object
*bufObj
;
1504 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferStorage");
1509 * In direct state access, buffer objects have an unspecified target since
1510 * they are not required to be bound.
1512 _mesa_buffer_storage(ctx
, bufObj
, GL_NONE
, size
, data
, flags
,
1513 "glNamedBufferStorage");
1518 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1519 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1520 GLenum usage
, const char *func
)
1524 if (MESA_VERBOSE
& VERBOSE_API
)
1525 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1527 _mesa_lookup_enum_by_nr(target
),
1528 (long int) size
, data
,
1529 _mesa_lookup_enum_by_nr(usage
));
1532 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1537 case GL_STREAM_DRAW_ARB
:
1538 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1541 case GL_STATIC_DRAW_ARB
:
1542 case GL_DYNAMIC_DRAW_ARB
:
1546 case GL_STREAM_READ_ARB
:
1547 case GL_STREAM_COPY_ARB
:
1548 case GL_STATIC_READ_ARB
:
1549 case GL_STATIC_COPY_ARB
:
1550 case GL_DYNAMIC_READ_ARB
:
1551 case GL_DYNAMIC_COPY_ARB
:
1552 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1556 valid_usage
= false;
1561 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1562 _mesa_lookup_enum_by_nr(usage
));
1566 if (bufObj
->Immutable
) {
1567 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1571 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1572 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1574 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1576 bufObj
->Written
= GL_TRUE
;
1579 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1580 bufObj
->Name
, size
, data
, usage
);
1587 assert(ctx
->Driver
.BufferData
);
1588 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1591 GL_DYNAMIC_STORAGE_BIT
,
1593 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1594 /* From GL_AMD_pinned_memory:
1596 * INVALID_OPERATION is generated by BufferData if <target> is
1597 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1598 * mapped to the GPU address space.
1600 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1603 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1609 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1610 const GLvoid
*data
, GLenum usage
)
1612 GET_CURRENT_CONTEXT(ctx
);
1613 struct gl_buffer_object
*bufObj
;
1615 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1619 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1624 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1627 GET_CURRENT_CONTEXT(ctx
);
1628 struct gl_buffer_object
*bufObj
;
1630 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1634 /* In direct state access, buffer objects have an unspecified target since
1635 * they are not required to be bound.
1637 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1638 "glNamedBufferData");
1643 * Implementation for glBufferSubData and glNamedBufferSubData.
1645 * \param ctx GL context.
1646 * \param bufObj The buffer object.
1647 * \param offset Offset of the first byte of the subdata range.
1648 * \param size Size, in bytes, of the subdata range.
1649 * \param data The data store.
1650 * \param func Name of calling function for recording errors.
1654 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1655 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1658 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1660 /* error already recorded */
1664 if (bufObj
->Immutable
&&
1665 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1666 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1673 bufObj
->Written
= GL_TRUE
;
1675 assert(ctx
->Driver
.BufferSubData
);
1676 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1680 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1681 GLsizeiptr size
, const GLvoid
*data
)
1683 GET_CURRENT_CONTEXT(ctx
);
1684 struct gl_buffer_object
*bufObj
;
1686 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1690 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1694 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1695 GLsizeiptr size
, const GLvoid
*data
)
1697 GET_CURRENT_CONTEXT(ctx
);
1698 struct gl_buffer_object
*bufObj
;
1700 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1704 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1705 "glNamedBufferSubData");
1710 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1711 GLsizeiptr size
, GLvoid
*data
)
1713 GET_CURRENT_CONTEXT(ctx
);
1714 struct gl_buffer_object
*bufObj
;
1716 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1717 GL_INVALID_OPERATION
);
1721 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1722 "glGetBufferSubData")) {
1726 assert(ctx
->Driver
.GetBufferSubData
);
1727 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1731 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1732 GLsizeiptr size
, GLvoid
*data
)
1734 GET_CURRENT_CONTEXT(ctx
);
1735 struct gl_buffer_object
*bufObj
;
1737 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1738 "glGetNamedBufferSubData");
1742 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1743 "glGetNamedBufferSubData")) {
1747 assert(ctx
->Driver
.GetBufferSubData
);
1748 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1753 * \param subdata true if caller is *SubData, false if *Data
1756 _mesa_clear_buffer_sub_data(struct gl_context
*ctx
,
1757 struct gl_buffer_object
*bufObj
,
1758 GLenum internalformat
,
1759 GLintptr offset
, GLsizeiptr size
,
1760 GLenum format
, GLenum type
,
1762 const char *func
, bool subdata
)
1764 mesa_format mesaFormat
;
1765 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1766 GLsizeiptr clearValueSize
;
1768 /* This checks for disallowed mappings. */
1769 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1774 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1775 format
, type
, func
);
1777 if (mesaFormat
== MESA_FORMAT_NONE
) {
1781 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1782 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1783 _mesa_error(ctx
, GL_INVALID_VALUE
,
1784 "%s(offset or size is not a multiple of "
1785 "internalformat size)", func
);
1790 /* clear to zeros, per the spec */
1792 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1793 NULL
, clearValueSize
, bufObj
);
1798 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1799 format
, type
, data
, func
)) {
1804 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1805 clearValue
, clearValueSize
, bufObj
);
1810 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1811 GLenum type
, const GLvoid
*data
)
1813 GET_CURRENT_CONTEXT(ctx
);
1814 struct gl_buffer_object
*bufObj
;
1816 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1820 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1822 "glClearBufferData", false);
1826 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1827 GLenum format
, GLenum type
, const GLvoid
*data
)
1829 GET_CURRENT_CONTEXT(ctx
);
1830 struct gl_buffer_object
*bufObj
;
1832 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1836 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1838 "glClearNamedBufferData", false);
1843 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1844 GLintptr offset
, GLsizeiptr size
,
1845 GLenum format
, GLenum type
,
1848 GET_CURRENT_CONTEXT(ctx
);
1849 struct gl_buffer_object
*bufObj
;
1851 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
1855 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1857 "glClearBufferSubData", true);
1861 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
1862 GLintptr offset
, GLsizeiptr size
,
1863 GLenum format
, GLenum type
,
1866 GET_CURRENT_CONTEXT(ctx
);
1867 struct gl_buffer_object
*bufObj
;
1869 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1870 "glClearNamedBufferSubData");
1874 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1876 "glClearNamedBufferSubData", true);
1881 _mesa_unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1884 GLboolean status
= GL_TRUE
;
1885 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1887 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
1888 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1889 "%s(buffer is not mapped)", func
);
1894 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1895 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1897 /* check that last 100 bytes are still = magic value */
1898 for (i
= 0; i
< 100; i
++) {
1899 GLuint pos
= bufObj
->Size
- i
- 1;
1900 if (buf
[pos
] != 123) {
1901 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1902 " at position %d (value = %u)\n",
1910 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1911 GLuint i
, unchanged
= 0;
1912 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1914 /* check which bytes changed */
1915 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1916 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1923 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1924 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1929 status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
1930 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
1931 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
1932 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
1933 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
1938 GLboolean GLAPIENTRY
1939 _mesa_UnmapBuffer(GLenum target
)
1941 GET_CURRENT_CONTEXT(ctx
);
1942 struct gl_buffer_object
*bufObj
;
1944 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
1948 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
1951 GLboolean GLAPIENTRY
1952 _mesa_UnmapNamedBuffer(GLuint buffer
)
1954 GET_CURRENT_CONTEXT(ctx
);
1955 struct gl_buffer_object
*bufObj
;
1957 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
1961 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
1966 get_buffer_parameter(struct gl_context
*ctx
,
1967 struct gl_buffer_object
*bufObj
, GLenum pname
,
1968 GLint64
*params
, const char *func
)
1971 case GL_BUFFER_SIZE_ARB
:
1972 *params
= bufObj
->Size
;
1974 case GL_BUFFER_USAGE_ARB
:
1975 *params
= bufObj
->Usage
;
1977 case GL_BUFFER_ACCESS_ARB
:
1978 *params
= simplified_access_mode(ctx
,
1979 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
1981 case GL_BUFFER_MAPPED_ARB
:
1982 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
1984 case GL_BUFFER_ACCESS_FLAGS
:
1985 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1987 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
1989 case GL_BUFFER_MAP_OFFSET
:
1990 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1992 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
1994 case GL_BUFFER_MAP_LENGTH
:
1995 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1997 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
1999 case GL_BUFFER_IMMUTABLE_STORAGE
:
2000 if (!ctx
->Extensions
.ARB_buffer_storage
)
2002 *params
= bufObj
->Immutable
;
2004 case GL_BUFFER_STORAGE_FLAGS
:
2005 if (!ctx
->Extensions
.ARB_buffer_storage
)
2007 *params
= bufObj
->StorageFlags
;
2016 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2017 _mesa_lookup_enum_by_nr(pname
));
2022 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2024 GET_CURRENT_CONTEXT(ctx
);
2025 struct gl_buffer_object
*bufObj
;
2028 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2029 GL_INVALID_OPERATION
);
2033 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2034 "glGetBufferParameteriv"))
2035 return; /* Error already recorded. */
2037 *params
= (GLint
) parameter
;
2041 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2043 GET_CURRENT_CONTEXT(ctx
);
2044 struct gl_buffer_object
*bufObj
;
2047 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2048 GL_INVALID_OPERATION
);
2052 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2053 "glGetBufferParameteri64v"))
2054 return; /* Error already recorded. */
2056 *params
= parameter
;
2060 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2062 GET_CURRENT_CONTEXT(ctx
);
2063 struct gl_buffer_object
*bufObj
;
2066 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2067 "glGetNamedBufferParameteriv");
2071 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2072 "glGetNamedBufferParameteriv"))
2073 return; /* Error already recorded. */
2075 *params
= (GLint
) parameter
;
2079 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2082 GET_CURRENT_CONTEXT(ctx
);
2083 struct gl_buffer_object
*bufObj
;
2086 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2087 "glGetNamedBufferParameteri64v");
2091 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2092 "glGetNamedBufferParameteri64v"))
2093 return; /* Error already recorded. */
2095 *params
= parameter
;
2100 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2102 GET_CURRENT_CONTEXT(ctx
);
2103 struct gl_buffer_object
*bufObj
;
2105 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2106 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2107 "GL_BUFFER_MAP_POINTER)");
2111 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2112 GL_INVALID_OPERATION
);
2116 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2120 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2122 GET_CURRENT_CONTEXT(ctx
);
2123 struct gl_buffer_object
*bufObj
;
2125 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2126 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2127 "GL_BUFFER_MAP_POINTER)");
2131 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2132 "glGetNamedBufferPointerv");
2136 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2141 _mesa_copy_buffer_sub_data(struct gl_context
*ctx
,
2142 struct gl_buffer_object
*src
,
2143 struct gl_buffer_object
*dst
,
2144 GLintptr readOffset
, GLintptr writeOffset
,
2145 GLsizeiptr size
, const char *func
)
2147 if (_mesa_check_disallowed_mapping(src
)) {
2148 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2149 "%s(readBuffer is mapped)", func
);
2153 if (_mesa_check_disallowed_mapping(dst
)) {
2154 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2155 "%s(writeBuffer is mapped)", func
);
2159 if (readOffset
< 0) {
2160 _mesa_error(ctx
, GL_INVALID_VALUE
,
2161 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2165 if (writeOffset
< 0) {
2166 _mesa_error(ctx
, GL_INVALID_VALUE
,
2167 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2172 _mesa_error(ctx
, GL_INVALID_VALUE
,
2173 "%s(size %d < 0)", func
, (int) size
);
2177 if (readOffset
+ size
> src
->Size
) {
2178 _mesa_error(ctx
, GL_INVALID_VALUE
,
2179 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2180 (int) readOffset
, (int) size
, (int) src
->Size
);
2184 if (writeOffset
+ size
> dst
->Size
) {
2185 _mesa_error(ctx
, GL_INVALID_VALUE
,
2186 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2187 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2192 if (readOffset
+ size
<= writeOffset
) {
2195 else if (writeOffset
+ size
<= readOffset
) {
2199 /* overlapping src/dst is illegal */
2200 _mesa_error(ctx
, GL_INVALID_VALUE
,
2201 "%s(overlapping src/dst)", func
);
2206 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2210 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2211 GLintptr readOffset
, GLintptr writeOffset
,
2214 GET_CURRENT_CONTEXT(ctx
);
2215 struct gl_buffer_object
*src
, *dst
;
2217 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2218 GL_INVALID_OPERATION
);
2222 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2223 GL_INVALID_OPERATION
);
2227 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2228 "glCopyBufferSubData");
2232 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2233 GLintptr readOffset
, GLintptr writeOffset
,
2236 GET_CURRENT_CONTEXT(ctx
);
2237 struct gl_buffer_object
*src
, *dst
;
2239 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2240 "glCopyNamedBufferSubData");
2244 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2245 "glCopyNamedBufferSubData");
2249 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2250 "glCopyNamedBufferSubData");
2255 _mesa_map_buffer_range(struct gl_context
*ctx
,
2256 struct gl_buffer_object
*bufObj
,
2257 GLintptr offset
, GLsizeiptr length
,
2258 GLbitfield access
, const char *func
)
2261 GLbitfield allowed_access
;
2263 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
2266 _mesa_error(ctx
, GL_INVALID_VALUE
,
2267 "%s(offset %ld < 0)", func
, (long) offset
);
2272 _mesa_error(ctx
, GL_INVALID_VALUE
,
2273 "%s(length %ld < 0)", func
, (long) length
);
2277 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2279 * "An INVALID_OPERATION error is generated for any of the following
2282 * * <length> is zero."
2284 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2285 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2289 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2293 allowed_access
= GL_MAP_READ_BIT
|
2295 GL_MAP_INVALIDATE_RANGE_BIT
|
2296 GL_MAP_INVALIDATE_BUFFER_BIT
|
2297 GL_MAP_FLUSH_EXPLICIT_BIT
|
2298 GL_MAP_UNSYNCHRONIZED_BIT
;
2300 if (ctx
->Extensions
.ARB_buffer_storage
) {
2301 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2302 GL_MAP_COHERENT_BIT
;
2305 if (access
& ~allowed_access
) {
2306 /* generate an error if any bits other than those allowed are set */
2307 _mesa_error(ctx
, GL_INVALID_VALUE
,
2308 "%s(access has undefined bits set)", func
);
2312 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2313 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2314 "%s(access indicates neither read or write)", func
);
2318 if ((access
& GL_MAP_READ_BIT
) &&
2319 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2320 GL_MAP_INVALIDATE_BUFFER_BIT
|
2321 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2322 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2323 "%s(read access with disallowed bits)", func
);
2327 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2328 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2329 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2330 "%s(access has flush explicit without write)", func
);
2334 if (access
& GL_MAP_READ_BIT
&&
2335 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2336 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2337 "%s(buffer does not allow read access)", func
);
2341 if (access
& GL_MAP_WRITE_BIT
&&
2342 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2343 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2344 "%s(buffer does not allow write access)", func
);
2348 if (access
& GL_MAP_COHERENT_BIT
&&
2349 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2350 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2351 "%s(buffer does not allow coherent access)", func
);
2355 if (access
& GL_MAP_PERSISTENT_BIT
&&
2356 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2357 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2358 "%s(buffer does not allow persistent access)", func
);
2362 if (offset
+ length
> bufObj
->Size
) {
2363 _mesa_error(ctx
, GL_INVALID_VALUE
,
2364 "%s(offset %ld + length %ld > buffer_size %ld)", func
,
2365 offset
, length
, bufObj
->Size
);
2369 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2370 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2371 "%s(buffer already mapped)", func
);
2375 if (!bufObj
->Size
) {
2376 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2381 assert(ctx
->Driver
.MapBufferRange
);
2382 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2385 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2388 /* The driver callback should have set all these fields.
2389 * This is important because other modules (like VBO) might call
2390 * the driver function directly.
2392 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2393 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2394 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2395 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2398 if (access
& GL_MAP_WRITE_BIT
)
2399 bufObj
->Written
= GL_TRUE
;
2402 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2403 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2404 bufObj
->Name
, bufObj
->Size
, access
);
2405 /* Access must be write only */
2406 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2408 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2409 for (i
= 0; i
< bufObj
->Size
; i
++)
2416 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2417 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2419 /* buffer is 100 bytes larger than requested, fill with magic value */
2420 for (i
= 0; i
< 100; i
++) {
2421 buf
[bufObj
->Size
- i
- 1] = 123;
2430 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2433 GET_CURRENT_CONTEXT(ctx
);
2434 struct gl_buffer_object
*bufObj
;
2436 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2437 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2438 "glMapBufferRange(ARB_map_buffer_range not supported)");
2442 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2446 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2447 "glMapBufferRange");
2451 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2454 GET_CURRENT_CONTEXT(ctx
);
2455 struct gl_buffer_object
*bufObj
;
2457 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2458 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2459 "glMapNamedBufferRange("
2460 "ARB_map_buffer_range not supported)");
2464 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2468 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2469 "glMapNamedBufferRange");
2473 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2474 * flags for input to _mesa_map_buffer_range.
2476 * \return true if the type of requested access is permissible.
2479 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2483 case GL_READ_ONLY_ARB
:
2484 *flags
= GL_MAP_READ_BIT
;
2485 return _mesa_is_desktop_gl(ctx
);
2486 case GL_WRITE_ONLY_ARB
:
2487 *flags
= GL_MAP_WRITE_BIT
;
2489 case GL_READ_WRITE_ARB
:
2490 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2491 return _mesa_is_desktop_gl(ctx
);
2498 _mesa_MapBuffer(GLenum target
, GLenum access
)
2500 GET_CURRENT_CONTEXT(ctx
);
2501 struct gl_buffer_object
*bufObj
;
2502 GLbitfield accessFlags
;
2504 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2505 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2509 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2513 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2518 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2520 GET_CURRENT_CONTEXT(ctx
);
2521 struct gl_buffer_object
*bufObj
;
2522 GLbitfield accessFlags
;
2524 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2525 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2529 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2533 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2534 "glMapNamedBuffer");
2539 _mesa_flush_mapped_buffer_range(struct gl_context
*ctx
,
2540 struct gl_buffer_object
*bufObj
,
2541 GLintptr offset
, GLsizeiptr length
,
2544 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2545 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2546 "%s(ARB_map_buffer_range not supported)", func
);
2551 _mesa_error(ctx
, GL_INVALID_VALUE
,
2552 "%s(offset %ld < 0)", func
, (long) offset
);
2557 _mesa_error(ctx
, GL_INVALID_VALUE
,
2558 "%s(length %ld < 0)", func
, (long) length
);
2562 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2563 /* buffer is not mapped */
2564 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2565 "%s(buffer is not mapped)", func
);
2569 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2570 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2571 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2572 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2576 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2577 _mesa_error(ctx
, GL_INVALID_VALUE
,
2578 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2579 (long) offset
, (long) length
,
2580 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2584 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2586 if (ctx
->Driver
.FlushMappedBufferRange
)
2587 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2592 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2595 GET_CURRENT_CONTEXT(ctx
);
2596 struct gl_buffer_object
*bufObj
;
2598 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2599 GL_INVALID_OPERATION
);
2603 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2604 "glFlushMappedBufferRange");
2608 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2611 GET_CURRENT_CONTEXT(ctx
);
2612 struct gl_buffer_object
*bufObj
;
2614 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2615 "glFlushMappedNamedBufferRange");
2619 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2620 "glFlushMappedNamedBufferRange");
2625 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2627 struct gl_buffer_object
*bufObj
;
2630 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2632 _mesa_error(ctx
, GL_INVALID_VALUE
,
2633 "glObjectPurgeable(name = 0x%x)", name
);
2636 if (!_mesa_is_bufferobj(bufObj
)) {
2637 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
2641 if (bufObj
->Purgeable
) {
2642 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2643 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2644 return GL_VOLATILE_APPLE
;
2647 bufObj
->Purgeable
= GL_TRUE
;
2649 retval
= GL_VOLATILE_APPLE
;
2650 if (ctx
->Driver
.BufferObjectPurgeable
)
2651 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
2658 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2660 struct gl_renderbuffer
*bufObj
;
2663 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2665 _mesa_error(ctx
, GL_INVALID_VALUE
,
2666 "glObjectUnpurgeable(name = 0x%x)", name
);
2670 if (bufObj
->Purgeable
) {
2671 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2672 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2673 return GL_VOLATILE_APPLE
;
2676 bufObj
->Purgeable
= GL_TRUE
;
2678 retval
= GL_VOLATILE_APPLE
;
2679 if (ctx
->Driver
.RenderObjectPurgeable
)
2680 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
2687 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2689 struct gl_texture_object
*bufObj
;
2692 bufObj
= _mesa_lookup_texture(ctx
, name
);
2694 _mesa_error(ctx
, GL_INVALID_VALUE
,
2695 "glObjectPurgeable(name = 0x%x)", name
);
2699 if (bufObj
->Purgeable
) {
2700 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2701 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2702 return GL_VOLATILE_APPLE
;
2705 bufObj
->Purgeable
= GL_TRUE
;
2707 retval
= GL_VOLATILE_APPLE
;
2708 if (ctx
->Driver
.TextureObjectPurgeable
)
2709 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
2716 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2720 GET_CURRENT_CONTEXT(ctx
);
2721 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2724 _mesa_error(ctx
, GL_INVALID_VALUE
,
2725 "glObjectPurgeable(name = 0x%x)", name
);
2730 case GL_VOLATILE_APPLE
:
2731 case GL_RELEASED_APPLE
:
2735 _mesa_error(ctx
, GL_INVALID_ENUM
,
2736 "glObjectPurgeable(name = 0x%x) invalid option: %d",
2741 switch (objectType
) {
2743 retval
= texture_object_purgeable(ctx
, name
, option
);
2745 case GL_RENDERBUFFER_EXT
:
2746 retval
= renderbuffer_purgeable(ctx
, name
, option
);
2748 case GL_BUFFER_OBJECT_APPLE
:
2749 retval
= buffer_object_purgeable(ctx
, name
, option
);
2752 _mesa_error(ctx
, GL_INVALID_ENUM
,
2753 "glObjectPurgeable(name = 0x%x) invalid type: %d",
2758 /* In strict conformance to the spec, we must only return VOLATILE when
2759 * when passed the VOLATILE option. Madness.
2761 * XXX First fix the spec, then fix me.
2763 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
2768 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2770 struct gl_buffer_object
*bufObj
;
2773 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2775 _mesa_error(ctx
, GL_INVALID_VALUE
,
2776 "glObjectUnpurgeable(name = 0x%x)", name
);
2780 if (! bufObj
->Purgeable
) {
2781 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2782 "glObjectUnpurgeable(name = 0x%x) object is "
2783 " already \"unpurged\"", name
);
2787 bufObj
->Purgeable
= GL_FALSE
;
2790 if (ctx
->Driver
.BufferObjectUnpurgeable
)
2791 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
2798 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2800 struct gl_renderbuffer
*bufObj
;
2803 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2805 _mesa_error(ctx
, GL_INVALID_VALUE
,
2806 "glObjectUnpurgeable(name = 0x%x)", name
);
2810 if (! bufObj
->Purgeable
) {
2811 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2812 "glObjectUnpurgeable(name = 0x%x) object is "
2813 " already \"unpurged\"", name
);
2817 bufObj
->Purgeable
= GL_FALSE
;
2820 if (ctx
->Driver
.RenderObjectUnpurgeable
)
2821 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
2828 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2830 struct gl_texture_object
*bufObj
;
2833 bufObj
= _mesa_lookup_texture(ctx
, name
);
2835 _mesa_error(ctx
, GL_INVALID_VALUE
,
2836 "glObjectUnpurgeable(name = 0x%x)", name
);
2840 if (! bufObj
->Purgeable
) {
2841 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2842 "glObjectUnpurgeable(name = 0x%x) object is"
2843 " already \"unpurged\"", name
);
2847 bufObj
->Purgeable
= GL_FALSE
;
2850 if (ctx
->Driver
.TextureObjectUnpurgeable
)
2851 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
2858 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2860 GET_CURRENT_CONTEXT(ctx
);
2861 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2864 _mesa_error(ctx
, GL_INVALID_VALUE
,
2865 "glObjectUnpurgeable(name = 0x%x)", name
);
2870 case GL_RETAINED_APPLE
:
2871 case GL_UNDEFINED_APPLE
:
2875 _mesa_error(ctx
, GL_INVALID_ENUM
,
2876 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
2881 switch (objectType
) {
2882 case GL_BUFFER_OBJECT_APPLE
:
2883 return buffer_object_unpurgeable(ctx
, name
, option
);
2885 return texture_object_unpurgeable(ctx
, name
, option
);
2886 case GL_RENDERBUFFER_EXT
:
2887 return renderbuffer_unpurgeable(ctx
, name
, option
);
2889 _mesa_error(ctx
, GL_INVALID_ENUM
,
2890 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
2898 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
2899 GLenum pname
, GLint
*params
)
2901 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2903 _mesa_error(ctx
, GL_INVALID_VALUE
,
2904 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
2909 case GL_PURGEABLE_APPLE
:
2910 *params
= bufObj
->Purgeable
;
2913 _mesa_error(ctx
, GL_INVALID_ENUM
,
2914 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2922 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
2923 GLenum pname
, GLint
*params
)
2925 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
2927 _mesa_error(ctx
, GL_INVALID_VALUE
,
2928 "glObjectUnpurgeable(name = 0x%x)", name
);
2933 case GL_PURGEABLE_APPLE
:
2934 *params
= rb
->Purgeable
;
2937 _mesa_error(ctx
, GL_INVALID_ENUM
,
2938 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2946 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
2947 GLenum pname
, GLint
*params
)
2949 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
2951 _mesa_error(ctx
, GL_INVALID_VALUE
,
2952 "glObjectUnpurgeable(name = 0x%x)", name
);
2957 case GL_PURGEABLE_APPLE
:
2958 *params
= texObj
->Purgeable
;
2961 _mesa_error(ctx
, GL_INVALID_ENUM
,
2962 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2970 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
2973 GET_CURRENT_CONTEXT(ctx
);
2976 _mesa_error(ctx
, GL_INVALID_VALUE
,
2977 "glGetObjectParameteriv(name = 0x%x)", name
);
2981 switch (objectType
) {
2983 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
2985 case GL_BUFFER_OBJECT_APPLE
:
2986 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
2988 case GL_RENDERBUFFER_EXT
:
2989 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
2992 _mesa_error(ctx
, GL_INVALID_ENUM
,
2993 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
2999 * Binds a buffer object to a uniform buffer binding point.
3001 * The caller is responsible for flushing vertices and updating
3005 set_ubo_binding(struct gl_context
*ctx
,
3006 struct gl_uniform_buffer_binding
*binding
,
3007 struct gl_buffer_object
*bufObj
,
3012 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3014 binding
->Offset
= offset
;
3015 binding
->Size
= size
;
3016 binding
->AutomaticSize
= autoSize
;
3018 /* If this is a real buffer object, mark it has having been used
3019 * at some point as a UBO.
3022 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
3026 * Binds a buffer object to a uniform buffer binding point.
3028 * Unlike set_ubo_binding(), this function also flushes vertices
3029 * and updates NewDriverState. It also checks if the binding
3030 * has actually changed before updating it.
3033 bind_uniform_buffer(struct gl_context
*ctx
,
3035 struct gl_buffer_object
*bufObj
,
3040 struct gl_uniform_buffer_binding
*binding
=
3041 &ctx
->UniformBufferBindings
[index
];
3043 if (binding
->BufferObject
== bufObj
&&
3044 binding
->Offset
== offset
&&
3045 binding
->Size
== size
&&
3046 binding
->AutomaticSize
== autoSize
) {
3050 FLUSH_VERTICES(ctx
, 0);
3051 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3053 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3057 * Bind a region of a buffer object to a uniform block binding point.
3058 * \param index the uniform buffer binding point index
3059 * \param bufObj the buffer object
3060 * \param offset offset to the start of buffer object region
3061 * \param size size of the buffer object region
3064 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
3066 struct gl_buffer_object
*bufObj
,
3070 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3071 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3075 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3076 _mesa_error(ctx
, GL_INVALID_VALUE
,
3077 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3078 ctx
->Const
.UniformBufferOffsetAlignment
);
3082 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3087 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3088 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3093 * Bind a buffer object to a uniform block binding point.
3094 * As above, but offset = 0.
3097 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
3099 struct gl_buffer_object
*bufObj
)
3101 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3102 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3106 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3108 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3109 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3111 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3115 * Binds a buffer object to an atomic buffer binding point.
3117 * The caller is responsible for validating the offset,
3118 * flushing the vertices and updating NewDriverState.
3121 set_atomic_buffer_binding(struct gl_context
*ctx
,
3122 struct gl_atomic_buffer_binding
*binding
,
3123 struct gl_buffer_object
*bufObj
,
3127 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3129 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3130 binding
->Offset
= -1;
3133 binding
->Offset
= offset
;
3134 binding
->Size
= size
;
3135 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3140 * Binds a buffer object to an atomic buffer binding point.
3142 * Unlike set_atomic_buffer_binding(), this function also validates the
3143 * index and offset, flushes vertices, and updates NewDriverState.
3144 * It also checks if the binding has actually changing before
3148 bind_atomic_buffer(struct gl_context
*ctx
,
3150 struct gl_buffer_object
*bufObj
,
3155 struct gl_atomic_buffer_binding
*binding
;
3157 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3158 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3162 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3163 _mesa_error(ctx
, GL_INVALID_VALUE
,
3164 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3165 ATOMIC_COUNTER_SIZE
);
3169 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3171 binding
= &ctx
->AtomicBufferBindings
[index
];
3172 if (binding
->BufferObject
== bufObj
&&
3173 binding
->Offset
== offset
&&
3174 binding
->Size
== size
) {
3178 FLUSH_VERTICES(ctx
, 0);
3179 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3181 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3185 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3187 const GLintptr
*offsets
,
3188 const GLsizeiptr
*sizes
)
3190 if (offsets
[index
] < 0) {
3191 /* The ARB_multi_bind spec says:
3193 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3194 * value in <offsets> is less than zero (per binding)."
3196 _mesa_error(ctx
, GL_INVALID_VALUE
,
3197 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3198 index
, (int64_t) offsets
[index
]);
3202 if (sizes
[index
] <= 0) {
3203 /* The ARB_multi_bind spec says:
3205 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3206 * value in <sizes> is less than or equal to zero (per binding)."
3208 _mesa_error(ctx
, GL_INVALID_VALUE
,
3209 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3210 index
, (int64_t) sizes
[index
]);
3218 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3219 GLuint first
, GLsizei count
,
3222 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3223 _mesa_error(ctx
, GL_INVALID_ENUM
,
3224 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3228 /* The ARB_multi_bind_spec says:
3230 * "An INVALID_OPERATION error is generated if <first> + <count> is
3231 * greater than the number of target-specific indexed binding points,
3232 * as described in section 6.7.1."
3234 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3235 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3236 "%s(first=%u + count=%d > the value of "
3237 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3238 caller
, first
, count
,
3239 ctx
->Const
.MaxUniformBufferBindings
);
3247 * Unbind all uniform buffers in the range
3248 * <first> through <first>+<count>-1
3251 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3253 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3256 for (i
= 0; i
< count
; i
++)
3257 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3258 bufObj
, -1, -1, GL_TRUE
);
3262 bind_uniform_buffers_base(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3263 const GLuint
*buffers
)
3267 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, "glBindBuffersBase"))
3270 /* Assume that at least one binding will be changed */
3271 FLUSH_VERTICES(ctx
, 0);
3272 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3275 /* The ARB_multi_bind spec says:
3277 * "If <buffers> is NULL, all bindings from <first> through
3278 * <first>+<count>-1 are reset to their unbound (zero) state."
3280 unbind_uniform_buffers(ctx
, first
, count
);
3284 /* Note that the error semantics for multi-bind commands differ from
3285 * those of other GL commands.
3287 * The Issues section in the ARB_multi_bind spec says:
3289 * "(11) Typically, OpenGL specifies that if an error is generated by a
3290 * command, that command has no effect. This is somewhat
3291 * unfortunate for multi-bind commands, because it would require a
3292 * first pass to scan the entire list of bound objects for errors
3293 * and then a second pass to actually perform the bindings.
3294 * Should we have different error semantics?
3296 * RESOLVED: Yes. In this specification, when the parameters for
3297 * one of the <count> binding points are invalid, that binding point
3298 * is not updated and an error will be generated. However, other
3299 * binding points in the same command will be updated if their
3300 * parameters are valid and no other error occurs."
3303 _mesa_begin_bufferobj_lookups(ctx
);
3305 for (i
= 0; i
< count
; i
++) {
3306 struct gl_uniform_buffer_binding
*binding
=
3307 &ctx
->UniformBufferBindings
[first
+ i
];
3308 struct gl_buffer_object
*bufObj
;
3310 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3311 bufObj
= binding
->BufferObject
;
3313 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3314 "glBindBuffersBase");
3317 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3318 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, GL_TRUE
);
3320 set_ubo_binding(ctx
, binding
, bufObj
, 0, 0, GL_TRUE
);
3324 _mesa_end_bufferobj_lookups(ctx
);
3328 bind_uniform_buffers_range(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3329 const GLuint
*buffers
,
3330 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
3334 if (!error_check_bind_uniform_buffers(ctx
, first
, count
,
3335 "glBindBuffersRange"))
3338 /* Assume that at least one binding will be changed */
3339 FLUSH_VERTICES(ctx
, 0);
3340 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3343 /* The ARB_multi_bind spec says:
3345 * "If <buffers> is NULL, all bindings from <first> through
3346 * <first>+<count>-1 are reset to their unbound (zero) state.
3347 * In this case, the offsets and sizes associated with the
3348 * binding points are set to default values, ignoring
3349 * <offsets> and <sizes>."
3351 unbind_uniform_buffers(ctx
, first
, count
);
3355 /* Note that the error semantics for multi-bind commands differ from
3356 * those of other GL commands.
3358 * The Issues section in the ARB_multi_bind spec says:
3360 * "(11) Typically, OpenGL specifies that if an error is generated by a
3361 * command, that command has no effect. This is somewhat
3362 * unfortunate for multi-bind commands, because it would require a
3363 * first pass to scan the entire list of bound objects for errors
3364 * and then a second pass to actually perform the bindings.
3365 * Should we have different error semantics?
3367 * RESOLVED: Yes. In this specification, when the parameters for
3368 * one of the <count> binding points are invalid, that binding point
3369 * is not updated and an error will be generated. However, other
3370 * binding points in the same command will be updated if their
3371 * parameters are valid and no other error occurs."
3374 _mesa_begin_bufferobj_lookups(ctx
);
3376 for (i
= 0; i
< count
; i
++) {
3377 struct gl_uniform_buffer_binding
*binding
=
3378 &ctx
->UniformBufferBindings
[first
+ i
];
3379 struct gl_buffer_object
*bufObj
;
3381 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3384 /* The ARB_multi_bind spec says:
3386 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3387 * pair of values in <offsets> and <sizes> does not respectively
3388 * satisfy the constraints described for those parameters for the
3389 * specified target, as described in section 6.7.1 (per binding)."
3391 * Section 6.7.1 refers to table 6.5, which says:
3393 * "┌───────────────────────────────────────────────────────────────┐
3394 * │ Uniform buffer array bindings (see sec. 7.6) │
3395 * ├─────────────────────┬─────────────────────────────────────────┤
3397 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3398 * │ │ OFFSET_ALIGNMENT │
3400 * │ size restriction │ none │
3401 * └─────────────────────┴─────────────────────────────────────────┘"
3403 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3404 _mesa_error(ctx
, GL_INVALID_VALUE
,
3405 "glBindBuffersRange(offsets[%u]=%" PRId64
3406 " is misaligned; it must be a multiple of the value of "
3407 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3408 "target=GL_UNIFORM_BUFFER)",
3409 i
, (int64_t) offsets
[i
],
3410 ctx
->Const
.UniformBufferOffsetAlignment
);
3414 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3415 bufObj
= binding
->BufferObject
;
3417 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3418 "glBindBuffersRange");
3421 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3422 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, GL_FALSE
);
3424 set_ubo_binding(ctx
, binding
, bufObj
,
3425 offsets
[i
], sizes
[i
], GL_FALSE
);
3429 _mesa_end_bufferobj_lookups(ctx
);
3433 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3434 struct gl_transform_feedback_object
*tfObj
,
3435 GLuint first
, GLsizei count
, const char *caller
)
3437 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3438 _mesa_error(ctx
, GL_INVALID_ENUM
,
3439 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3443 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3445 * "An INVALID_OPERATION error is generated :
3448 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3449 * FEEDBACK_BUFFER and transform feedback is currently active."
3451 * We assume that this is also meant to apply to BindBuffersRange
3452 * and BindBuffersBase.
3454 if (tfObj
->Active
) {
3455 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3456 "%s(Changing transform feedback buffers while "
3457 "transform feedback is active)", caller
);
3461 /* The ARB_multi_bind_spec says:
3463 * "An INVALID_OPERATION error is generated if <first> + <count> is
3464 * greater than the number of target-specific indexed binding points,
3465 * as described in section 6.7.1."
3467 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3468 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3469 "%s(first=%u + count=%d > the value of "
3470 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3471 caller
, first
, count
,
3472 ctx
->Const
.MaxTransformFeedbackBuffers
);
3480 * Unbind all transform feedback buffers in the range
3481 * <first> through <first>+<count>-1
3484 unbind_xfb_buffers(struct gl_context
*ctx
,
3485 struct gl_transform_feedback_object
*tfObj
,
3486 GLuint first
, GLsizei count
)
3488 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3491 for (i
= 0; i
< count
; i
++)
3492 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3497 bind_xfb_buffers_base(struct gl_context
*ctx
,
3498 GLuint first
, GLsizei count
,
3499 const GLuint
*buffers
)
3501 struct gl_transform_feedback_object
*tfObj
=
3502 ctx
->TransformFeedback
.CurrentObject
;
3505 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
,
3506 "glBindBuffersBase"))
3509 /* Assume that at least one binding will be changed */
3510 FLUSH_VERTICES(ctx
, 0);
3511 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3514 /* The ARB_multi_bind spec says:
3516 * "If <buffers> is NULL, all bindings from <first> through
3517 * <first>+<count>-1 are reset to their unbound (zero) state."
3519 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3523 /* Note that the error semantics for multi-bind commands differ from
3524 * those of other GL commands.
3526 * The Issues section in the ARB_multi_bind spec says:
3528 * "(11) Typically, OpenGL specifies that if an error is generated by a
3529 * command, that command has no effect. This is somewhat
3530 * unfortunate for multi-bind commands, because it would require a
3531 * first pass to scan the entire list of bound objects for errors
3532 * and then a second pass to actually perform the bindings.
3533 * Should we have different error semantics?
3535 * RESOLVED: Yes. In this specification, when the parameters for
3536 * one of the <count> binding points are invalid, that binding point
3537 * is not updated and an error will be generated. However, other
3538 * binding points in the same command will be updated if their
3539 * parameters are valid and no other error occurs."
3542 _mesa_begin_bufferobj_lookups(ctx
);
3544 for (i
= 0; i
< count
; i
++) {
3545 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[first
+ i
];
3546 struct gl_buffer_object
*bufObj
;
3548 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3549 bufObj
= boundBufObj
;
3551 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3552 "glBindBuffersBase");
3555 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3559 _mesa_end_bufferobj_lookups(ctx
);
3563 bind_xfb_buffers_range(struct gl_context
*ctx
,
3564 GLuint first
, GLsizei count
,
3565 const GLuint
*buffers
,
3566 const GLintptr
*offsets
,
3567 const GLsizeiptr
*sizes
)
3569 struct gl_transform_feedback_object
*tfObj
=
3570 ctx
->TransformFeedback
.CurrentObject
;
3573 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
,
3574 "glBindBuffersRange"))
3577 /* Assume that at least one binding will be changed */
3578 FLUSH_VERTICES(ctx
, 0);
3579 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3582 /* The ARB_multi_bind spec says:
3584 * "If <buffers> is NULL, all bindings from <first> through
3585 * <first>+<count>-1 are reset to their unbound (zero) state.
3586 * In this case, the offsets and sizes associated with the
3587 * binding points are set to default values, ignoring
3588 * <offsets> and <sizes>."
3590 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3594 /* Note that the error semantics for multi-bind commands differ from
3595 * those of other GL commands.
3597 * The Issues section in the ARB_multi_bind spec says:
3599 * "(11) Typically, OpenGL specifies that if an error is generated by a
3600 * command, that command has no effect. This is somewhat
3601 * unfortunate for multi-bind commands, because it would require a
3602 * first pass to scan the entire list of bound objects for errors
3603 * and then a second pass to actually perform the bindings.
3604 * Should we have different error semantics?
3606 * RESOLVED: Yes. In this specification, when the parameters for
3607 * one of the <count> binding points are invalid, that binding point
3608 * is not updated and an error will be generated. However, other
3609 * binding points in the same command will be updated if their
3610 * parameters are valid and no other error occurs."
3613 _mesa_begin_bufferobj_lookups(ctx
);
3615 for (i
= 0; i
< count
; i
++) {
3616 const GLuint index
= first
+ i
;
3617 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3618 struct gl_buffer_object
*bufObj
;
3620 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3623 /* The ARB_multi_bind spec says:
3625 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3626 * pair of values in <offsets> and <sizes> does not respectively
3627 * satisfy the constraints described for those parameters for the
3628 * specified target, as described in section 6.7.1 (per binding)."
3630 * Section 6.7.1 refers to table 6.5, which says:
3632 * "┌───────────────────────────────────────────────────────────────┐
3633 * │ Transform feedback array bindings (see sec. 13.2.2) │
3634 * ├───────────────────────┬───────────────────────────────────────┤
3636 * │ offset restriction │ multiple of 4 │
3638 * │ size restriction │ multiple of 4 │
3639 * └───────────────────────┴───────────────────────────────────────┘"
3641 if (offsets
[i
] & 0x3) {
3642 _mesa_error(ctx
, GL_INVALID_VALUE
,
3643 "glBindBuffersRange(offsets[%u]=%" PRId64
3644 " is misaligned; it must be a multiple of 4 when "
3645 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3646 i
, (int64_t) offsets
[i
]);
3650 if (sizes
[i
] & 0x3) {
3651 _mesa_error(ctx
, GL_INVALID_VALUE
,
3652 "glBindBuffersRange(sizes[%u]=%" PRId64
3653 " is misaligned; it must be a multiple of 4 when "
3654 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3655 i
, (int64_t) sizes
[i
]);
3659 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3660 bufObj
= boundBufObj
;
3662 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3663 "glBindBuffersRange");
3666 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3667 offsets
[i
], sizes
[i
]);
3670 _mesa_end_bufferobj_lookups(ctx
);
3674 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3675 GLuint first
, GLsizei count
,
3678 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3679 _mesa_error(ctx
, GL_INVALID_ENUM
,
3680 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3684 /* The ARB_multi_bind_spec says:
3686 * "An INVALID_OPERATION error is generated if <first> + <count> is
3687 * greater than the number of target-specific indexed binding points,
3688 * as described in section 6.7.1."
3690 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3691 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3692 "%s(first=%u + count=%d > the value of "
3693 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3694 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3702 * Unbind all atomic counter buffers in the range
3703 * <first> through <first>+<count>-1
3706 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3708 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3711 for (i
= 0; i
< count
; i
++)
3712 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3717 bind_atomic_buffers_base(struct gl_context
*ctx
,
3720 const GLuint
*buffers
)
3724 if (!error_check_bind_atomic_buffers(ctx
, first
, count
,
3725 "glBindBuffersBase"))
3728 /* Assume that at least one binding will be changed */
3729 FLUSH_VERTICES(ctx
, 0);
3730 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3733 /* The ARB_multi_bind spec says:
3735 * "If <buffers> is NULL, all bindings from <first> through
3736 * <first>+<count>-1 are reset to their unbound (zero) state."
3738 unbind_atomic_buffers(ctx
, first
, count
);
3742 /* Note that the error semantics for multi-bind commands differ from
3743 * those of other GL commands.
3745 * The Issues section in the ARB_multi_bind spec says:
3747 * "(11) Typically, OpenGL specifies that if an error is generated by a
3748 * command, that command has no effect. This is somewhat
3749 * unfortunate for multi-bind commands, because it would require a
3750 * first pass to scan the entire list of bound objects for errors
3751 * and then a second pass to actually perform the bindings.
3752 * Should we have different error semantics?
3754 * RESOLVED: Yes. In this specification, when the parameters for
3755 * one of the <count> binding points are invalid, that binding point
3756 * is not updated and an error will be generated. However, other
3757 * binding points in the same command will be updated if their
3758 * parameters are valid and no other error occurs."
3761 _mesa_begin_bufferobj_lookups(ctx
);
3763 for (i
= 0; i
< count
; i
++) {
3764 struct gl_atomic_buffer_binding
*binding
=
3765 &ctx
->AtomicBufferBindings
[first
+ i
];
3766 struct gl_buffer_object
*bufObj
;
3768 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3769 bufObj
= binding
->BufferObject
;
3771 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3772 "glBindBuffersBase");
3775 set_atomic_buffer_binding(ctx
, binding
, bufObj
, 0, 0);
3778 _mesa_end_bufferobj_lookups(ctx
);
3782 bind_atomic_buffers_range(struct gl_context
*ctx
,
3785 const GLuint
*buffers
,
3786 const GLintptr
*offsets
,
3787 const GLsizeiptr
*sizes
)
3791 if (!error_check_bind_atomic_buffers(ctx
, first
, count
,
3792 "glBindBuffersRange"))
3795 /* Assume that at least one binding will be changed */
3796 FLUSH_VERTICES(ctx
, 0);
3797 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3800 /* The ARB_multi_bind spec says:
3802 * "If <buffers> is NULL, all bindings from <first> through
3803 * <first>+<count>-1 are reset to their unbound (zero) state.
3804 * In this case, the offsets and sizes associated with the
3805 * binding points are set to default values, ignoring
3806 * <offsets> and <sizes>."
3808 unbind_atomic_buffers(ctx
, first
, count
);
3812 /* Note that the error semantics for multi-bind commands differ from
3813 * those of other GL commands.
3815 * The Issues section in the ARB_multi_bind spec says:
3817 * "(11) Typically, OpenGL specifies that if an error is generated by a
3818 * command, that command has no effect. This is somewhat
3819 * unfortunate for multi-bind commands, because it would require a
3820 * first pass to scan the entire list of bound objects for errors
3821 * and then a second pass to actually perform the bindings.
3822 * Should we have different error semantics?
3824 * RESOLVED: Yes. In this specification, when the parameters for
3825 * one of the <count> binding points are invalid, that binding point
3826 * is not updated and an error will be generated. However, other
3827 * binding points in the same command will be updated if their
3828 * parameters are valid and no other error occurs."
3831 _mesa_begin_bufferobj_lookups(ctx
);
3833 for (i
= 0; i
< count
; i
++) {
3834 struct gl_atomic_buffer_binding
*binding
=
3835 &ctx
->AtomicBufferBindings
[first
+ i
];
3836 struct gl_buffer_object
*bufObj
;
3838 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3841 /* The ARB_multi_bind spec says:
3843 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3844 * pair of values in <offsets> and <sizes> does not respectively
3845 * satisfy the constraints described for those parameters for the
3846 * specified target, as described in section 6.7.1 (per binding)."
3848 * Section 6.7.1 refers to table 6.5, which says:
3850 * "┌───────────────────────────────────────────────────────────────┐
3851 * │ Atomic counter array bindings (see sec. 7.7.2) │
3852 * ├───────────────────────┬───────────────────────────────────────┤
3854 * │ offset restriction │ multiple of 4 │
3856 * │ size restriction │ none │
3857 * └───────────────────────┴───────────────────────────────────────┘"
3859 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3860 _mesa_error(ctx
, GL_INVALID_VALUE
,
3861 "glBindBuffersRange(offsets[%u]=%" PRId64
3862 " is misaligned; it must be a multiple of %d when "
3863 "target=GL_ATOMIC_COUNTER_BUFFER)",
3864 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3868 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3869 bufObj
= binding
->BufferObject
;
3871 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3872 "glBindBuffersRange");
3875 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offsets
[i
], sizes
[i
]);
3878 _mesa_end_bufferobj_lookups(ctx
);
3882 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3883 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3885 GET_CURRENT_CONTEXT(ctx
);
3886 struct gl_buffer_object
*bufObj
;
3889 bufObj
= ctx
->Shared
->NullBufferObj
;
3891 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3893 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
3894 &bufObj
, "glBindBufferRange"))
3898 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3899 "glBindBufferRange(invalid buffer=%u)", buffer
);
3905 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3912 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3913 _mesa_bind_buffer_range_transform_feedback(ctx
,
3914 ctx
->TransformFeedback
.CurrentObject
,
3915 index
, bufObj
, offset
, size
,
3918 case GL_UNIFORM_BUFFER
:
3919 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3921 case GL_ATOMIC_COUNTER_BUFFER
:
3922 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3923 "glBindBufferRange");
3926 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
3932 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
3934 GET_CURRENT_CONTEXT(ctx
);
3935 struct gl_buffer_object
*bufObj
;
3938 bufObj
= ctx
->Shared
->NullBufferObj
;
3940 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3942 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
3943 &bufObj
, "glBindBufferBase"))
3947 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3948 "glBindBufferBase(invalid buffer=%u)", buffer
);
3952 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
3953 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
3955 * "BindBufferBase is equivalent to calling BindBufferRange with offset
3956 * zero and size equal to the size of buffer."
3958 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
3960 * "If the parameter (starting offset or size) was not specified when the
3961 * buffer object was bound, zero is returned."
3963 * What happens if the size of the buffer changes? Does the size of the
3964 * buffer at the moment glBindBufferBase was called still play a role, like
3965 * the first quote would imply, or is the size meaningless in the
3966 * glBindBufferBase case like the second quote would suggest? The GL 4.1
3967 * core spec page 45 says:
3969 * "It is equivalent to calling BindBufferRange with offset zero, while
3970 * size is determined by the size of the bound buffer at the time the
3973 * My interpretation is that the GL 4.1 spec was a clarification of the
3974 * behavior, not a change. In particular, this choice will only make
3975 * rendering work in cases where it would have had undefined results.
3979 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3980 _mesa_bind_buffer_base_transform_feedback(ctx
,
3981 ctx
->TransformFeedback
.CurrentObject
,
3982 index
, bufObj
, false);
3984 case GL_UNIFORM_BUFFER
:
3985 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
3987 case GL_ATOMIC_COUNTER_BUFFER
:
3988 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
3989 "glBindBufferBase");
3992 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
3998 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
3999 const GLuint
*buffers
,
4000 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4002 GET_CURRENT_CONTEXT(ctx
);
4005 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4006 bind_xfb_buffers_range(ctx
, first
, count
, buffers
, offsets
, sizes
);
4008 case GL_UNIFORM_BUFFER
:
4009 bind_uniform_buffers_range(ctx
, first
, count
, buffers
, offsets
, sizes
);
4011 case GL_ATOMIC_COUNTER_BUFFER
:
4012 bind_atomic_buffers_range(ctx
, first
, count
, buffers
,
4016 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4017 _mesa_lookup_enum_by_nr(target
));
4023 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4024 const GLuint
*buffers
)
4026 GET_CURRENT_CONTEXT(ctx
);
4029 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4030 bind_xfb_buffers_base(ctx
, first
, count
, buffers
);
4032 case GL_UNIFORM_BUFFER
:
4033 bind_uniform_buffers_base(ctx
, first
, count
, buffers
);
4035 case GL_ATOMIC_COUNTER_BUFFER
:
4036 bind_atomic_buffers_base(ctx
, first
, count
, buffers
);
4039 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4040 _mesa_lookup_enum_by_nr(target
));
4046 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4049 GET_CURRENT_CONTEXT(ctx
);
4050 struct gl_buffer_object
*bufObj
;
4051 const GLintptr end
= offset
+ length
;
4053 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4055 _mesa_error(ctx
, GL_INVALID_VALUE
,
4056 "glInvalidateBufferSubData(name = 0x%x) invalid object",
4061 /* The GL_ARB_invalidate_subdata spec says:
4063 * "An INVALID_VALUE error is generated if <offset> or <length> is
4064 * negative, or if <offset> + <length> is greater than the value of
4067 if (end
< 0 || end
> bufObj
->Size
) {
4068 _mesa_error(ctx
, GL_INVALID_VALUE
,
4069 "glInvalidateBufferSubData(invalid offset or length)");
4073 /* The OpenGL 4.4 (Core Profile) spec says:
4075 * "An INVALID_OPERATION error is generated if buffer is currently
4076 * mapped by MapBuffer or if the invalidate range intersects the range
4077 * currently mapped by MapBufferRange, unless it was mapped
4078 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4080 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4081 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4082 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4083 "glInvalidateBufferSubData(intersection with mapped "
4088 /* We don't actually do anything for this yet. Just return after
4089 * validating the parameters and generating the required errors.
4095 _mesa_InvalidateBufferData(GLuint buffer
)
4097 GET_CURRENT_CONTEXT(ctx
);
4098 struct gl_buffer_object
*bufObj
;
4100 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4102 _mesa_error(ctx
, GL_INVALID_VALUE
,
4103 "glInvalidateBufferData(name = 0x%x) invalid object",
4108 /* The OpenGL 4.4 (Core Profile) spec says:
4110 * "An INVALID_OPERATION error is generated if buffer is currently
4111 * mapped by MapBuffer or if the invalidate range intersects the range
4112 * currently mapped by MapBufferRange, unless it was mapped
4113 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4115 if (_mesa_check_disallowed_mapping(bufObj
)) {
4116 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4117 "glInvalidateBufferData(intersection with mapped "
4122 /* We don't actually do anything for this yet. Just return after
4123 * validating the parameters and generating the required errors.