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 SSBO binding points */
1268 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1269 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1270 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1274 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1275 _mesa_BindBuffer(GL_SHADER_STORAGE_BUFFER
, 0);
1278 /* unbind Atomci Buffer binding points */
1279 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1280 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1281 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1285 if (ctx
->AtomicBuffer
== bufObj
) {
1286 _mesa_BindBuffer( GL_ATOMIC_COUNTER_BUFFER
, 0 );
1289 /* unbind any pixel pack/unpack pointers bound to this buffer */
1290 if (ctx
->Pack
.BufferObj
== bufObj
) {
1291 _mesa_BindBuffer( GL_PIXEL_PACK_BUFFER_EXT
, 0 );
1293 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1294 _mesa_BindBuffer( GL_PIXEL_UNPACK_BUFFER_EXT
, 0 );
1297 if (ctx
->Texture
.BufferObject
== bufObj
) {
1298 _mesa_BindBuffer( GL_TEXTURE_BUFFER
, 0 );
1301 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1302 _mesa_BindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
, 0);
1305 /* The ID is immediately freed for re-use */
1306 _mesa_HashRemove(ctx
->Shared
->BufferObjects
, ids
[i
]);
1307 /* Make sure we do not run into the classic ABA problem on bind.
1308 * We don't want to allow re-binding a buffer object that's been
1309 * "deleted" by glDeleteBuffers().
1311 * The explicit rebinding to the default object in the current context
1312 * prevents the above in the current context, but another context
1313 * sharing the same objects might suffer from this problem.
1314 * The alternative would be to do the hash lookup in any case on bind
1315 * which would introduce more runtime overhead than this.
1317 bufObj
->DeletePending
= GL_TRUE
;
1318 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1322 mtx_unlock(&ctx
->Shared
->Mutex
);
1327 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1328 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1332 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1334 GET_CURRENT_CONTEXT(ctx
);
1337 struct gl_buffer_object
*buf
;
1339 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1341 if (MESA_VERBOSE
& VERBOSE_API
)
1342 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1345 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1354 * This must be atomic (generation and allocation of buffer object IDs)
1356 mtx_lock(&ctx
->Shared
->Mutex
);
1358 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1360 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1361 * DummyBufferObject. Otherwise, create a new buffer object and insert
1364 for (i
= 0; i
< n
; i
++) {
1365 buffers
[i
] = first
+ i
;
1367 assert(ctx
->Driver
.NewBufferObject
);
1368 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1370 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1371 mtx_unlock(&ctx
->Shared
->Mutex
);
1376 buf
= &DummyBufferObject
;
1378 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1381 mtx_unlock(&ctx
->Shared
->Mutex
);
1385 * Generate a set of unique buffer object IDs and store them in \c buffers.
1387 * \param n Number of IDs to generate.
1388 * \param buffers Array of \c n locations to store the IDs.
1391 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1393 create_buffers(n
, buffers
, false);
1397 * Create a set of buffer objects and store their unique IDs in \c buffers.
1399 * \param n Number of IDs to generate.
1400 * \param buffers Array of \c n locations to store the IDs.
1403 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1405 create_buffers(n
, buffers
, true);
1410 * Determine if ID is the name of a buffer object.
1412 * \param id ID of the potential buffer object.
1413 * \return \c GL_TRUE if \c id is the name of a buffer object,
1414 * \c GL_FALSE otherwise.
1416 GLboolean GLAPIENTRY
1417 _mesa_IsBuffer(GLuint id
)
1419 struct gl_buffer_object
*bufObj
;
1420 GET_CURRENT_CONTEXT(ctx
);
1421 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1423 mtx_lock(&ctx
->Shared
->Mutex
);
1424 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1425 mtx_unlock(&ctx
->Shared
->Mutex
);
1427 return bufObj
&& bufObj
!= &DummyBufferObject
;
1432 _mesa_buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1433 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1434 GLbitfield flags
, const char *func
)
1437 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1441 if (flags
& ~(GL_MAP_READ_BIT
|
1443 GL_MAP_PERSISTENT_BIT
|
1444 GL_MAP_COHERENT_BIT
|
1445 GL_DYNAMIC_STORAGE_BIT
|
1446 GL_CLIENT_STORAGE_BIT
)) {
1447 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1451 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1452 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1453 _mesa_error(ctx
, GL_INVALID_VALUE
,
1454 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1458 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1459 _mesa_error(ctx
, GL_INVALID_VALUE
,
1460 "%s(COHERENT and flags!=PERSISTENT)", func
);
1464 if (bufObj
->Immutable
) {
1465 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1469 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1470 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1472 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1474 bufObj
->Written
= GL_TRUE
;
1475 bufObj
->Immutable
= GL_TRUE
;
1477 assert(ctx
->Driver
.BufferData
);
1478 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1480 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1481 /* Even though the interaction between AMD_pinned_memory and
1482 * glBufferStorage is not described in the spec, Graham Sellers
1483 * said that it should behave the same as glBufferData.
1485 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1488 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1494 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1497 GET_CURRENT_CONTEXT(ctx
);
1498 struct gl_buffer_object
*bufObj
;
1500 bufObj
= get_buffer(ctx
, "glBufferStorage", target
, GL_INVALID_OPERATION
);
1504 _mesa_buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
,
1509 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1512 GET_CURRENT_CONTEXT(ctx
);
1513 struct gl_buffer_object
*bufObj
;
1515 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferStorage");
1520 * In direct state access, buffer objects have an unspecified target since
1521 * they are not required to be bound.
1523 _mesa_buffer_storage(ctx
, bufObj
, GL_NONE
, size
, data
, flags
,
1524 "glNamedBufferStorage");
1529 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1530 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1531 GLenum usage
, const char *func
)
1535 if (MESA_VERBOSE
& VERBOSE_API
)
1536 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1538 _mesa_lookup_enum_by_nr(target
),
1539 (long int) size
, data
,
1540 _mesa_lookup_enum_by_nr(usage
));
1543 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1548 case GL_STREAM_DRAW_ARB
:
1549 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1552 case GL_STATIC_DRAW_ARB
:
1553 case GL_DYNAMIC_DRAW_ARB
:
1557 case GL_STREAM_READ_ARB
:
1558 case GL_STREAM_COPY_ARB
:
1559 case GL_STATIC_READ_ARB
:
1560 case GL_STATIC_COPY_ARB
:
1561 case GL_DYNAMIC_READ_ARB
:
1562 case GL_DYNAMIC_COPY_ARB
:
1563 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1567 valid_usage
= false;
1572 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1573 _mesa_lookup_enum_by_nr(usage
));
1577 if (bufObj
->Immutable
) {
1578 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1582 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1583 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1585 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1587 bufObj
->Written
= GL_TRUE
;
1590 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1591 bufObj
->Name
, size
, data
, usage
);
1598 assert(ctx
->Driver
.BufferData
);
1599 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1602 GL_DYNAMIC_STORAGE_BIT
,
1604 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1605 /* From GL_AMD_pinned_memory:
1607 * INVALID_OPERATION is generated by BufferData if <target> is
1608 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1609 * mapped to the GPU address space.
1611 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1614 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1620 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1621 const GLvoid
*data
, GLenum usage
)
1623 GET_CURRENT_CONTEXT(ctx
);
1624 struct gl_buffer_object
*bufObj
;
1626 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1630 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1635 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1638 GET_CURRENT_CONTEXT(ctx
);
1639 struct gl_buffer_object
*bufObj
;
1641 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1645 /* In direct state access, buffer objects have an unspecified target since
1646 * they are not required to be bound.
1648 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1649 "glNamedBufferData");
1654 * Implementation for glBufferSubData and glNamedBufferSubData.
1656 * \param ctx GL context.
1657 * \param bufObj The buffer object.
1658 * \param offset Offset of the first byte of the subdata range.
1659 * \param size Size, in bytes, of the subdata range.
1660 * \param data The data store.
1661 * \param func Name of calling function for recording errors.
1665 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1666 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1669 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1671 /* error already recorded */
1675 if (bufObj
->Immutable
&&
1676 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1677 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1684 bufObj
->Written
= GL_TRUE
;
1686 assert(ctx
->Driver
.BufferSubData
);
1687 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1691 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1692 GLsizeiptr size
, const GLvoid
*data
)
1694 GET_CURRENT_CONTEXT(ctx
);
1695 struct gl_buffer_object
*bufObj
;
1697 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1701 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1705 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1706 GLsizeiptr size
, const GLvoid
*data
)
1708 GET_CURRENT_CONTEXT(ctx
);
1709 struct gl_buffer_object
*bufObj
;
1711 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1715 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1716 "glNamedBufferSubData");
1721 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1722 GLsizeiptr size
, GLvoid
*data
)
1724 GET_CURRENT_CONTEXT(ctx
);
1725 struct gl_buffer_object
*bufObj
;
1727 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1728 GL_INVALID_OPERATION
);
1732 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1733 "glGetBufferSubData")) {
1737 assert(ctx
->Driver
.GetBufferSubData
);
1738 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1742 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1743 GLsizeiptr size
, GLvoid
*data
)
1745 GET_CURRENT_CONTEXT(ctx
);
1746 struct gl_buffer_object
*bufObj
;
1748 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1749 "glGetNamedBufferSubData");
1753 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1754 "glGetNamedBufferSubData")) {
1758 assert(ctx
->Driver
.GetBufferSubData
);
1759 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1764 * \param subdata true if caller is *SubData, false if *Data
1767 _mesa_clear_buffer_sub_data(struct gl_context
*ctx
,
1768 struct gl_buffer_object
*bufObj
,
1769 GLenum internalformat
,
1770 GLintptr offset
, GLsizeiptr size
,
1771 GLenum format
, GLenum type
,
1773 const char *func
, bool subdata
)
1775 mesa_format mesaFormat
;
1776 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1777 GLsizeiptr clearValueSize
;
1779 /* This checks for disallowed mappings. */
1780 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1785 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1786 format
, type
, func
);
1788 if (mesaFormat
== MESA_FORMAT_NONE
) {
1792 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1793 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1794 _mesa_error(ctx
, GL_INVALID_VALUE
,
1795 "%s(offset or size is not a multiple of "
1796 "internalformat size)", func
);
1801 /* clear to zeros, per the spec */
1803 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1804 NULL
, clearValueSize
, bufObj
);
1809 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1810 format
, type
, data
, func
)) {
1815 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1816 clearValue
, clearValueSize
, bufObj
);
1821 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1822 GLenum type
, const GLvoid
*data
)
1824 GET_CURRENT_CONTEXT(ctx
);
1825 struct gl_buffer_object
*bufObj
;
1827 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1831 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1833 "glClearBufferData", false);
1837 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1838 GLenum format
, GLenum type
, const GLvoid
*data
)
1840 GET_CURRENT_CONTEXT(ctx
);
1841 struct gl_buffer_object
*bufObj
;
1843 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1847 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1849 "glClearNamedBufferData", false);
1854 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1855 GLintptr offset
, GLsizeiptr size
,
1856 GLenum format
, GLenum type
,
1859 GET_CURRENT_CONTEXT(ctx
);
1860 struct gl_buffer_object
*bufObj
;
1862 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
1866 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1868 "glClearBufferSubData", true);
1872 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
1873 GLintptr offset
, GLsizeiptr size
,
1874 GLenum format
, GLenum type
,
1877 GET_CURRENT_CONTEXT(ctx
);
1878 struct gl_buffer_object
*bufObj
;
1880 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1881 "glClearNamedBufferSubData");
1885 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
1887 "glClearNamedBufferSubData", true);
1892 _mesa_unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1895 GLboolean status
= GL_TRUE
;
1896 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1898 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
1899 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1900 "%s(buffer is not mapped)", func
);
1905 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
1906 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
1908 /* check that last 100 bytes are still = magic value */
1909 for (i
= 0; i
< 100; i
++) {
1910 GLuint pos
= bufObj
->Size
- i
- 1;
1911 if (buf
[pos
] != 123) {
1912 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
1913 " at position %d (value = %u)\n",
1921 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
1922 GLuint i
, unchanged
= 0;
1923 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
1925 /* check which bytes changed */
1926 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
1927 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
1934 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
1935 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
1940 status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
1941 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
1942 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
1943 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
1944 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
1949 GLboolean GLAPIENTRY
1950 _mesa_UnmapBuffer(GLenum target
)
1952 GET_CURRENT_CONTEXT(ctx
);
1953 struct gl_buffer_object
*bufObj
;
1955 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
1959 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
1962 GLboolean GLAPIENTRY
1963 _mesa_UnmapNamedBuffer(GLuint buffer
)
1965 GET_CURRENT_CONTEXT(ctx
);
1966 struct gl_buffer_object
*bufObj
;
1968 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
1972 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
1977 get_buffer_parameter(struct gl_context
*ctx
,
1978 struct gl_buffer_object
*bufObj
, GLenum pname
,
1979 GLint64
*params
, const char *func
)
1982 case GL_BUFFER_SIZE_ARB
:
1983 *params
= bufObj
->Size
;
1985 case GL_BUFFER_USAGE_ARB
:
1986 *params
= bufObj
->Usage
;
1988 case GL_BUFFER_ACCESS_ARB
:
1989 *params
= simplified_access_mode(ctx
,
1990 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
1992 case GL_BUFFER_MAPPED_ARB
:
1993 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
1995 case GL_BUFFER_ACCESS_FLAGS
:
1996 if (!ctx
->Extensions
.ARB_map_buffer_range
)
1998 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2000 case GL_BUFFER_MAP_OFFSET
:
2001 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2003 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2005 case GL_BUFFER_MAP_LENGTH
:
2006 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2008 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2010 case GL_BUFFER_IMMUTABLE_STORAGE
:
2011 if (!ctx
->Extensions
.ARB_buffer_storage
)
2013 *params
= bufObj
->Immutable
;
2015 case GL_BUFFER_STORAGE_FLAGS
:
2016 if (!ctx
->Extensions
.ARB_buffer_storage
)
2018 *params
= bufObj
->StorageFlags
;
2027 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2028 _mesa_lookup_enum_by_nr(pname
));
2033 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2035 GET_CURRENT_CONTEXT(ctx
);
2036 struct gl_buffer_object
*bufObj
;
2039 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2040 GL_INVALID_OPERATION
);
2044 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2045 "glGetBufferParameteriv"))
2046 return; /* Error already recorded. */
2048 *params
= (GLint
) parameter
;
2052 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2054 GET_CURRENT_CONTEXT(ctx
);
2055 struct gl_buffer_object
*bufObj
;
2058 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2059 GL_INVALID_OPERATION
);
2063 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2064 "glGetBufferParameteri64v"))
2065 return; /* Error already recorded. */
2067 *params
= parameter
;
2071 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2073 GET_CURRENT_CONTEXT(ctx
);
2074 struct gl_buffer_object
*bufObj
;
2077 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2078 "glGetNamedBufferParameteriv");
2082 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2083 "glGetNamedBufferParameteriv"))
2084 return; /* Error already recorded. */
2086 *params
= (GLint
) parameter
;
2090 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2093 GET_CURRENT_CONTEXT(ctx
);
2094 struct gl_buffer_object
*bufObj
;
2097 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2098 "glGetNamedBufferParameteri64v");
2102 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2103 "glGetNamedBufferParameteri64v"))
2104 return; /* Error already recorded. */
2106 *params
= parameter
;
2111 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2113 GET_CURRENT_CONTEXT(ctx
);
2114 struct gl_buffer_object
*bufObj
;
2116 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2117 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2118 "GL_BUFFER_MAP_POINTER)");
2122 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2123 GL_INVALID_OPERATION
);
2127 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2131 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2133 GET_CURRENT_CONTEXT(ctx
);
2134 struct gl_buffer_object
*bufObj
;
2136 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2137 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2138 "GL_BUFFER_MAP_POINTER)");
2142 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2143 "glGetNamedBufferPointerv");
2147 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2152 _mesa_copy_buffer_sub_data(struct gl_context
*ctx
,
2153 struct gl_buffer_object
*src
,
2154 struct gl_buffer_object
*dst
,
2155 GLintptr readOffset
, GLintptr writeOffset
,
2156 GLsizeiptr size
, const char *func
)
2158 if (_mesa_check_disallowed_mapping(src
)) {
2159 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2160 "%s(readBuffer is mapped)", func
);
2164 if (_mesa_check_disallowed_mapping(dst
)) {
2165 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2166 "%s(writeBuffer is mapped)", func
);
2170 if (readOffset
< 0) {
2171 _mesa_error(ctx
, GL_INVALID_VALUE
,
2172 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2176 if (writeOffset
< 0) {
2177 _mesa_error(ctx
, GL_INVALID_VALUE
,
2178 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2183 _mesa_error(ctx
, GL_INVALID_VALUE
,
2184 "%s(size %d < 0)", func
, (int) size
);
2188 if (readOffset
+ size
> src
->Size
) {
2189 _mesa_error(ctx
, GL_INVALID_VALUE
,
2190 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2191 (int) readOffset
, (int) size
, (int) src
->Size
);
2195 if (writeOffset
+ size
> dst
->Size
) {
2196 _mesa_error(ctx
, GL_INVALID_VALUE
,
2197 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2198 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2203 if (readOffset
+ size
<= writeOffset
) {
2206 else if (writeOffset
+ size
<= readOffset
) {
2210 /* overlapping src/dst is illegal */
2211 _mesa_error(ctx
, GL_INVALID_VALUE
,
2212 "%s(overlapping src/dst)", func
);
2217 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2221 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2222 GLintptr readOffset
, GLintptr writeOffset
,
2225 GET_CURRENT_CONTEXT(ctx
);
2226 struct gl_buffer_object
*src
, *dst
;
2228 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2229 GL_INVALID_OPERATION
);
2233 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2234 GL_INVALID_OPERATION
);
2238 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2239 "glCopyBufferSubData");
2243 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2244 GLintptr readOffset
, GLintptr writeOffset
,
2247 GET_CURRENT_CONTEXT(ctx
);
2248 struct gl_buffer_object
*src
, *dst
;
2250 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2251 "glCopyNamedBufferSubData");
2255 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2256 "glCopyNamedBufferSubData");
2260 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2261 "glCopyNamedBufferSubData");
2266 _mesa_map_buffer_range(struct gl_context
*ctx
,
2267 struct gl_buffer_object
*bufObj
,
2268 GLintptr offset
, GLsizeiptr length
,
2269 GLbitfield access
, const char *func
)
2272 GLbitfield allowed_access
;
2274 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
2277 _mesa_error(ctx
, GL_INVALID_VALUE
,
2278 "%s(offset %ld < 0)", func
, (long) offset
);
2283 _mesa_error(ctx
, GL_INVALID_VALUE
,
2284 "%s(length %ld < 0)", func
, (long) length
);
2288 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2290 * "An INVALID_OPERATION error is generated for any of the following
2293 * * <length> is zero."
2295 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2296 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2300 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2304 allowed_access
= GL_MAP_READ_BIT
|
2306 GL_MAP_INVALIDATE_RANGE_BIT
|
2307 GL_MAP_INVALIDATE_BUFFER_BIT
|
2308 GL_MAP_FLUSH_EXPLICIT_BIT
|
2309 GL_MAP_UNSYNCHRONIZED_BIT
;
2311 if (ctx
->Extensions
.ARB_buffer_storage
) {
2312 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2313 GL_MAP_COHERENT_BIT
;
2316 if (access
& ~allowed_access
) {
2317 /* generate an error if any bits other than those allowed are set */
2318 _mesa_error(ctx
, GL_INVALID_VALUE
,
2319 "%s(access has undefined bits set)", func
);
2323 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2324 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2325 "%s(access indicates neither read or write)", func
);
2329 if ((access
& GL_MAP_READ_BIT
) &&
2330 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2331 GL_MAP_INVALIDATE_BUFFER_BIT
|
2332 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2333 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2334 "%s(read access with disallowed bits)", func
);
2338 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2339 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2340 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2341 "%s(access has flush explicit without write)", func
);
2345 if (access
& GL_MAP_READ_BIT
&&
2346 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2347 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2348 "%s(buffer does not allow read access)", func
);
2352 if (access
& GL_MAP_WRITE_BIT
&&
2353 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2354 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2355 "%s(buffer does not allow write access)", func
);
2359 if (access
& GL_MAP_COHERENT_BIT
&&
2360 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2361 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2362 "%s(buffer does not allow coherent access)", func
);
2366 if (access
& GL_MAP_PERSISTENT_BIT
&&
2367 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2368 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2369 "%s(buffer does not allow persistent access)", func
);
2373 if (offset
+ length
> bufObj
->Size
) {
2374 _mesa_error(ctx
, GL_INVALID_VALUE
,
2375 "%s(offset %ld + length %ld > buffer_size %ld)", func
,
2376 offset
, length
, bufObj
->Size
);
2380 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2381 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2382 "%s(buffer already mapped)", func
);
2386 if (!bufObj
->Size
) {
2387 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2392 assert(ctx
->Driver
.MapBufferRange
);
2393 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2396 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2399 /* The driver callback should have set all these fields.
2400 * This is important because other modules (like VBO) might call
2401 * the driver function directly.
2403 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2404 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2405 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2406 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2409 if (access
& GL_MAP_WRITE_BIT
)
2410 bufObj
->Written
= GL_TRUE
;
2413 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2414 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2415 bufObj
->Name
, bufObj
->Size
, access
);
2416 /* Access must be write only */
2417 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2419 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2420 for (i
= 0; i
< bufObj
->Size
; i
++)
2427 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2428 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2430 /* buffer is 100 bytes larger than requested, fill with magic value */
2431 for (i
= 0; i
< 100; i
++) {
2432 buf
[bufObj
->Size
- i
- 1] = 123;
2441 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2444 GET_CURRENT_CONTEXT(ctx
);
2445 struct gl_buffer_object
*bufObj
;
2447 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2448 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2449 "glMapBufferRange(ARB_map_buffer_range not supported)");
2453 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2457 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2458 "glMapBufferRange");
2462 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2465 GET_CURRENT_CONTEXT(ctx
);
2466 struct gl_buffer_object
*bufObj
;
2468 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2469 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2470 "glMapNamedBufferRange("
2471 "ARB_map_buffer_range not supported)");
2475 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2479 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2480 "glMapNamedBufferRange");
2484 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2485 * flags for input to _mesa_map_buffer_range.
2487 * \return true if the type of requested access is permissible.
2490 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2494 case GL_READ_ONLY_ARB
:
2495 *flags
= GL_MAP_READ_BIT
;
2496 return _mesa_is_desktop_gl(ctx
);
2497 case GL_WRITE_ONLY_ARB
:
2498 *flags
= GL_MAP_WRITE_BIT
;
2500 case GL_READ_WRITE_ARB
:
2501 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2502 return _mesa_is_desktop_gl(ctx
);
2509 _mesa_MapBuffer(GLenum target
, GLenum access
)
2511 GET_CURRENT_CONTEXT(ctx
);
2512 struct gl_buffer_object
*bufObj
;
2513 GLbitfield accessFlags
;
2515 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2516 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2520 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2524 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2529 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2531 GET_CURRENT_CONTEXT(ctx
);
2532 struct gl_buffer_object
*bufObj
;
2533 GLbitfield accessFlags
;
2535 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2536 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2540 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2544 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2545 "glMapNamedBuffer");
2550 _mesa_flush_mapped_buffer_range(struct gl_context
*ctx
,
2551 struct gl_buffer_object
*bufObj
,
2552 GLintptr offset
, GLsizeiptr length
,
2555 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2556 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2557 "%s(ARB_map_buffer_range not supported)", func
);
2562 _mesa_error(ctx
, GL_INVALID_VALUE
,
2563 "%s(offset %ld < 0)", func
, (long) offset
);
2568 _mesa_error(ctx
, GL_INVALID_VALUE
,
2569 "%s(length %ld < 0)", func
, (long) length
);
2573 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2574 /* buffer is not mapped */
2575 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2576 "%s(buffer is not mapped)", func
);
2580 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2581 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2582 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2583 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2587 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2588 _mesa_error(ctx
, GL_INVALID_VALUE
,
2589 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2590 (long) offset
, (long) length
,
2591 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2595 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2597 if (ctx
->Driver
.FlushMappedBufferRange
)
2598 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2603 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2606 GET_CURRENT_CONTEXT(ctx
);
2607 struct gl_buffer_object
*bufObj
;
2609 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2610 GL_INVALID_OPERATION
);
2614 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2615 "glFlushMappedBufferRange");
2619 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2622 GET_CURRENT_CONTEXT(ctx
);
2623 struct gl_buffer_object
*bufObj
;
2625 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2626 "glFlushMappedNamedBufferRange");
2630 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2631 "glFlushMappedNamedBufferRange");
2636 buffer_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2638 struct gl_buffer_object
*bufObj
;
2641 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2643 _mesa_error(ctx
, GL_INVALID_VALUE
,
2644 "glObjectPurgeable(name = 0x%x)", name
);
2647 if (!_mesa_is_bufferobj(bufObj
)) {
2648 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glObjectPurgeable(buffer 0)" );
2652 if (bufObj
->Purgeable
) {
2653 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2654 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2655 return GL_VOLATILE_APPLE
;
2658 bufObj
->Purgeable
= GL_TRUE
;
2660 retval
= GL_VOLATILE_APPLE
;
2661 if (ctx
->Driver
.BufferObjectPurgeable
)
2662 retval
= ctx
->Driver
.BufferObjectPurgeable(ctx
, bufObj
, option
);
2669 renderbuffer_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2671 struct gl_renderbuffer
*bufObj
;
2674 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2676 _mesa_error(ctx
, GL_INVALID_VALUE
,
2677 "glObjectUnpurgeable(name = 0x%x)", name
);
2681 if (bufObj
->Purgeable
) {
2682 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2683 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2684 return GL_VOLATILE_APPLE
;
2687 bufObj
->Purgeable
= GL_TRUE
;
2689 retval
= GL_VOLATILE_APPLE
;
2690 if (ctx
->Driver
.RenderObjectPurgeable
)
2691 retval
= ctx
->Driver
.RenderObjectPurgeable(ctx
, bufObj
, option
);
2698 texture_object_purgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2700 struct gl_texture_object
*bufObj
;
2703 bufObj
= _mesa_lookup_texture(ctx
, name
);
2705 _mesa_error(ctx
, GL_INVALID_VALUE
,
2706 "glObjectPurgeable(name = 0x%x)", name
);
2710 if (bufObj
->Purgeable
) {
2711 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2712 "glObjectPurgeable(name = 0x%x) is already purgeable", name
);
2713 return GL_VOLATILE_APPLE
;
2716 bufObj
->Purgeable
= GL_TRUE
;
2718 retval
= GL_VOLATILE_APPLE
;
2719 if (ctx
->Driver
.TextureObjectPurgeable
)
2720 retval
= ctx
->Driver
.TextureObjectPurgeable(ctx
, bufObj
, option
);
2727 _mesa_ObjectPurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2731 GET_CURRENT_CONTEXT(ctx
);
2732 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2735 _mesa_error(ctx
, GL_INVALID_VALUE
,
2736 "glObjectPurgeable(name = 0x%x)", name
);
2741 case GL_VOLATILE_APPLE
:
2742 case GL_RELEASED_APPLE
:
2746 _mesa_error(ctx
, GL_INVALID_ENUM
,
2747 "glObjectPurgeable(name = 0x%x) invalid option: %d",
2752 switch (objectType
) {
2754 retval
= texture_object_purgeable(ctx
, name
, option
);
2756 case GL_RENDERBUFFER_EXT
:
2757 retval
= renderbuffer_purgeable(ctx
, name
, option
);
2759 case GL_BUFFER_OBJECT_APPLE
:
2760 retval
= buffer_object_purgeable(ctx
, name
, option
);
2763 _mesa_error(ctx
, GL_INVALID_ENUM
,
2764 "glObjectPurgeable(name = 0x%x) invalid type: %d",
2769 /* In strict conformance to the spec, we must only return VOLATILE when
2770 * when passed the VOLATILE option. Madness.
2772 * XXX First fix the spec, then fix me.
2774 return option
== GL_VOLATILE_APPLE
? GL_VOLATILE_APPLE
: retval
;
2779 buffer_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2781 struct gl_buffer_object
*bufObj
;
2784 bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2786 _mesa_error(ctx
, GL_INVALID_VALUE
,
2787 "glObjectUnpurgeable(name = 0x%x)", name
);
2791 if (! bufObj
->Purgeable
) {
2792 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2793 "glObjectUnpurgeable(name = 0x%x) object is "
2794 " already \"unpurged\"", name
);
2798 bufObj
->Purgeable
= GL_FALSE
;
2801 if (ctx
->Driver
.BufferObjectUnpurgeable
)
2802 retval
= ctx
->Driver
.BufferObjectUnpurgeable(ctx
, bufObj
, option
);
2809 renderbuffer_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2811 struct gl_renderbuffer
*bufObj
;
2814 bufObj
= _mesa_lookup_renderbuffer(ctx
, name
);
2816 _mesa_error(ctx
, GL_INVALID_VALUE
,
2817 "glObjectUnpurgeable(name = 0x%x)", name
);
2821 if (! bufObj
->Purgeable
) {
2822 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2823 "glObjectUnpurgeable(name = 0x%x) object is "
2824 " already \"unpurged\"", name
);
2828 bufObj
->Purgeable
= GL_FALSE
;
2831 if (ctx
->Driver
.RenderObjectUnpurgeable
)
2832 retval
= ctx
->Driver
.RenderObjectUnpurgeable(ctx
, bufObj
, option
);
2839 texture_object_unpurgeable(struct gl_context
*ctx
, GLuint name
, GLenum option
)
2841 struct gl_texture_object
*bufObj
;
2844 bufObj
= _mesa_lookup_texture(ctx
, name
);
2846 _mesa_error(ctx
, GL_INVALID_VALUE
,
2847 "glObjectUnpurgeable(name = 0x%x)", name
);
2851 if (! bufObj
->Purgeable
) {
2852 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2853 "glObjectUnpurgeable(name = 0x%x) object is"
2854 " already \"unpurged\"", name
);
2858 bufObj
->Purgeable
= GL_FALSE
;
2861 if (ctx
->Driver
.TextureObjectUnpurgeable
)
2862 retval
= ctx
->Driver
.TextureObjectUnpurgeable(ctx
, bufObj
, option
);
2869 _mesa_ObjectUnpurgeableAPPLE(GLenum objectType
, GLuint name
, GLenum option
)
2871 GET_CURRENT_CONTEXT(ctx
);
2872 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2875 _mesa_error(ctx
, GL_INVALID_VALUE
,
2876 "glObjectUnpurgeable(name = 0x%x)", name
);
2881 case GL_RETAINED_APPLE
:
2882 case GL_UNDEFINED_APPLE
:
2886 _mesa_error(ctx
, GL_INVALID_ENUM
,
2887 "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
2892 switch (objectType
) {
2893 case GL_BUFFER_OBJECT_APPLE
:
2894 return buffer_object_unpurgeable(ctx
, name
, option
);
2896 return texture_object_unpurgeable(ctx
, name
, option
);
2897 case GL_RENDERBUFFER_EXT
:
2898 return renderbuffer_unpurgeable(ctx
, name
, option
);
2900 _mesa_error(ctx
, GL_INVALID_ENUM
,
2901 "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
2909 get_buffer_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
2910 GLenum pname
, GLint
*params
)
2912 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, name
);
2914 _mesa_error(ctx
, GL_INVALID_VALUE
,
2915 "glGetObjectParameteriv(name = 0x%x) invalid object", name
);
2920 case GL_PURGEABLE_APPLE
:
2921 *params
= bufObj
->Purgeable
;
2924 _mesa_error(ctx
, GL_INVALID_ENUM
,
2925 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2933 get_renderbuffer_parameteriv(struct gl_context
*ctx
, GLuint name
,
2934 GLenum pname
, GLint
*params
)
2936 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, name
);
2938 _mesa_error(ctx
, GL_INVALID_VALUE
,
2939 "glObjectUnpurgeable(name = 0x%x)", name
);
2944 case GL_PURGEABLE_APPLE
:
2945 *params
= rb
->Purgeable
;
2948 _mesa_error(ctx
, GL_INVALID_ENUM
,
2949 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2957 get_texture_object_parameteriv(struct gl_context
*ctx
, GLuint name
,
2958 GLenum pname
, GLint
*params
)
2960 struct gl_texture_object
*texObj
= _mesa_lookup_texture(ctx
, name
);
2962 _mesa_error(ctx
, GL_INVALID_VALUE
,
2963 "glObjectUnpurgeable(name = 0x%x)", name
);
2968 case GL_PURGEABLE_APPLE
:
2969 *params
= texObj
->Purgeable
;
2972 _mesa_error(ctx
, GL_INVALID_ENUM
,
2973 "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
2981 _mesa_GetObjectParameterivAPPLE(GLenum objectType
, GLuint name
, GLenum pname
,
2984 GET_CURRENT_CONTEXT(ctx
);
2987 _mesa_error(ctx
, GL_INVALID_VALUE
,
2988 "glGetObjectParameteriv(name = 0x%x)", name
);
2992 switch (objectType
) {
2994 get_texture_object_parameteriv(ctx
, name
, pname
, params
);
2996 case GL_BUFFER_OBJECT_APPLE
:
2997 get_buffer_object_parameteriv(ctx
, name
, pname
, params
);
2999 case GL_RENDERBUFFER_EXT
:
3000 get_renderbuffer_parameteriv(ctx
, name
, pname
, params
);
3003 _mesa_error(ctx
, GL_INVALID_ENUM
,
3004 "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
3010 * Binds a buffer object to a uniform buffer binding point.
3012 * The caller is responsible for flushing vertices and updating
3016 set_ubo_binding(struct gl_context
*ctx
,
3017 struct gl_uniform_buffer_binding
*binding
,
3018 struct gl_buffer_object
*bufObj
,
3023 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3025 binding
->Offset
= offset
;
3026 binding
->Size
= size
;
3027 binding
->AutomaticSize
= autoSize
;
3029 /* If this is a real buffer object, mark it has having been used
3030 * at some point as a UBO.
3033 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
3037 * Binds a buffer object to a shader storage buffer binding point.
3039 * The caller is responsible for flushing vertices and updating
3043 set_ssbo_binding(struct gl_context
*ctx
,
3044 struct gl_shader_storage_buffer_binding
*binding
,
3045 struct gl_buffer_object
*bufObj
,
3050 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3052 binding
->Offset
= offset
;
3053 binding
->Size
= size
;
3054 binding
->AutomaticSize
= autoSize
;
3056 /* If this is a real buffer object, mark it has having been used
3057 * at some point as a SSBO.
3060 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
3064 * Binds a buffer object to a uniform buffer binding point.
3066 * Unlike set_ubo_binding(), this function also flushes vertices
3067 * and updates NewDriverState. It also checks if the binding
3068 * has actually changed before updating it.
3071 bind_uniform_buffer(struct gl_context
*ctx
,
3073 struct gl_buffer_object
*bufObj
,
3078 struct gl_uniform_buffer_binding
*binding
=
3079 &ctx
->UniformBufferBindings
[index
];
3081 if (binding
->BufferObject
== bufObj
&&
3082 binding
->Offset
== offset
&&
3083 binding
->Size
== size
&&
3084 binding
->AutomaticSize
== autoSize
) {
3088 FLUSH_VERTICES(ctx
, 0);
3089 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3091 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
3095 * Bind a region of a buffer object to a uniform block binding point.
3096 * \param index the uniform buffer binding point index
3097 * \param bufObj the buffer object
3098 * \param offset offset to the start of buffer object region
3099 * \param size size of the buffer object region
3102 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
3104 struct gl_buffer_object
*bufObj
,
3108 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3109 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3113 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3114 _mesa_error(ctx
, GL_INVALID_VALUE
,
3115 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3116 ctx
->Const
.UniformBufferOffsetAlignment
);
3120 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3125 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3126 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3131 * Bind a buffer object to a uniform block binding point.
3132 * As above, but offset = 0.
3135 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
3137 struct gl_buffer_object
*bufObj
)
3139 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3140 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3144 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3146 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3147 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3149 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3153 * Binds a buffer object to an atomic buffer binding point.
3155 * The caller is responsible for validating the offset,
3156 * flushing the vertices and updating NewDriverState.
3159 set_atomic_buffer_binding(struct gl_context
*ctx
,
3160 struct gl_atomic_buffer_binding
*binding
,
3161 struct gl_buffer_object
*bufObj
,
3165 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3167 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3168 binding
->Offset
= -1;
3171 binding
->Offset
= offset
;
3172 binding
->Size
= size
;
3173 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3178 * Binds a buffer object to an atomic buffer binding point.
3180 * Unlike set_atomic_buffer_binding(), this function also validates the
3181 * index and offset, flushes vertices, and updates NewDriverState.
3182 * It also checks if the binding has actually changing before
3186 bind_atomic_buffer(struct gl_context
*ctx
,
3188 struct gl_buffer_object
*bufObj
,
3193 struct gl_atomic_buffer_binding
*binding
;
3195 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3196 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3200 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3201 _mesa_error(ctx
, GL_INVALID_VALUE
,
3202 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3203 ATOMIC_COUNTER_SIZE
);
3207 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3209 binding
= &ctx
->AtomicBufferBindings
[index
];
3210 if (binding
->BufferObject
== bufObj
&&
3211 binding
->Offset
== offset
&&
3212 binding
->Size
== size
) {
3216 FLUSH_VERTICES(ctx
, 0);
3217 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3219 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3223 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3225 const GLintptr
*offsets
,
3226 const GLsizeiptr
*sizes
)
3228 if (offsets
[index
] < 0) {
3229 /* The ARB_multi_bind spec says:
3231 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3232 * value in <offsets> is less than zero (per binding)."
3234 _mesa_error(ctx
, GL_INVALID_VALUE
,
3235 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3236 index
, (int64_t) offsets
[index
]);
3240 if (sizes
[index
] <= 0) {
3241 /* The ARB_multi_bind spec says:
3243 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3244 * value in <sizes> is less than or equal to zero (per binding)."
3246 _mesa_error(ctx
, GL_INVALID_VALUE
,
3247 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3248 index
, (int64_t) sizes
[index
]);
3256 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3257 GLuint first
, GLsizei count
,
3260 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3261 _mesa_error(ctx
, GL_INVALID_ENUM
,
3262 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3266 /* The ARB_multi_bind_spec says:
3268 * "An INVALID_OPERATION error is generated if <first> + <count> is
3269 * greater than the number of target-specific indexed binding points,
3270 * as described in section 6.7.1."
3272 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3273 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3274 "%s(first=%u + count=%d > the value of "
3275 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3276 caller
, first
, count
,
3277 ctx
->Const
.MaxUniformBufferBindings
);
3285 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3286 GLuint first
, GLsizei count
,
3289 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3290 _mesa_error(ctx
, GL_INVALID_ENUM
,
3291 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3295 /* The ARB_multi_bind_spec says:
3297 * "An INVALID_OPERATION error is generated if <first> + <count> is
3298 * greater than the number of target-specific indexed binding points,
3299 * as described in section 6.7.1."
3301 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3302 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3303 "%s(first=%u + count=%d > the value of "
3304 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3305 caller
, first
, count
,
3306 ctx
->Const
.MaxShaderStorageBufferBindings
);
3314 * Unbind all uniform buffers in the range
3315 * <first> through <first>+<count>-1
3318 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3320 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3323 for (i
= 0; i
< count
; i
++)
3324 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3325 bufObj
, -1, -1, GL_TRUE
);
3329 * Unbind all shader storage buffers in the range
3330 * <first> through <first>+<count>-1
3333 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3336 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3339 for (i
= 0; i
< count
; i
++)
3340 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3341 bufObj
, -1, -1, GL_TRUE
);
3345 bind_uniform_buffers_base(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3346 const GLuint
*buffers
)
3350 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, "glBindBuffersBase"))
3353 /* Assume that at least one binding will be changed */
3354 FLUSH_VERTICES(ctx
, 0);
3355 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3358 /* The ARB_multi_bind spec says:
3360 * "If <buffers> is NULL, all bindings from <first> through
3361 * <first>+<count>-1 are reset to their unbound (zero) state."
3363 unbind_uniform_buffers(ctx
, first
, count
);
3367 /* Note that the error semantics for multi-bind commands differ from
3368 * those of other GL commands.
3370 * The Issues section in the ARB_multi_bind spec says:
3372 * "(11) Typically, OpenGL specifies that if an error is generated by a
3373 * command, that command has no effect. This is somewhat
3374 * unfortunate for multi-bind commands, because it would require a
3375 * first pass to scan the entire list of bound objects for errors
3376 * and then a second pass to actually perform the bindings.
3377 * Should we have different error semantics?
3379 * RESOLVED: Yes. In this specification, when the parameters for
3380 * one of the <count> binding points are invalid, that binding point
3381 * is not updated and an error will be generated. However, other
3382 * binding points in the same command will be updated if their
3383 * parameters are valid and no other error occurs."
3386 _mesa_begin_bufferobj_lookups(ctx
);
3388 for (i
= 0; i
< count
; i
++) {
3389 struct gl_uniform_buffer_binding
*binding
=
3390 &ctx
->UniformBufferBindings
[first
+ i
];
3391 struct gl_buffer_object
*bufObj
;
3393 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3394 bufObj
= binding
->BufferObject
;
3396 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3397 "glBindBuffersBase");
3400 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3401 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, GL_TRUE
);
3403 set_ubo_binding(ctx
, binding
, bufObj
, 0, 0, GL_TRUE
);
3407 _mesa_end_bufferobj_lookups(ctx
);
3411 bind_shader_storage_buffers_base(struct gl_context
*ctx
, GLuint first
,
3412 GLsizei count
, const GLuint
*buffers
)
3416 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
,
3417 "glBindBuffersBase"))
3420 /* Assume that at least one binding will be changed */
3421 FLUSH_VERTICES(ctx
, 0);
3422 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3425 /* The ARB_multi_bind spec says:
3427 * "If <buffers> is NULL, all bindings from <first> through
3428 * <first>+<count>-1 are reset to their unbound (zero) state."
3430 unbind_shader_storage_buffers(ctx
, first
, count
);
3434 /* Note that the error semantics for multi-bind commands differ from
3435 * those of other GL commands.
3437 * The Issues section in the ARB_multi_bind spec says:
3439 * "(11) Typically, OpenGL specifies that if an error is generated by a
3440 * command, that command has no effect. This is somewhat
3441 * unfortunate for multi-bind commands, because it would require a
3442 * first pass to scan the entire list of bound objects for errors
3443 * and then a second pass to actually perform the bindings.
3444 * Should we have different error semantics?
3446 * RESOLVED: Yes. In this specification, when the parameters for
3447 * one of the <count> binding points are invalid, that binding point
3448 * is not updated and an error will be generated. However, other
3449 * binding points in the same command will be updated if their
3450 * parameters are valid and no other error occurs."
3453 _mesa_begin_bufferobj_lookups(ctx
);
3455 for (i
= 0; i
< count
; i
++) {
3456 struct gl_shader_storage_buffer_binding
*binding
=
3457 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3458 struct gl_buffer_object
*bufObj
;
3460 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3461 bufObj
= binding
->BufferObject
;
3463 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3464 "glBindBuffersBase");
3467 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3468 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, GL_TRUE
);
3470 set_ssbo_binding(ctx
, binding
, bufObj
, 0, 0, GL_TRUE
);
3474 _mesa_end_bufferobj_lookups(ctx
);
3478 bind_uniform_buffers_range(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3479 const GLuint
*buffers
,
3480 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
3484 if (!error_check_bind_uniform_buffers(ctx
, first
, count
,
3485 "glBindBuffersRange"))
3488 /* Assume that at least one binding will be changed */
3489 FLUSH_VERTICES(ctx
, 0);
3490 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3493 /* The ARB_multi_bind spec says:
3495 * "If <buffers> is NULL, all bindings from <first> through
3496 * <first>+<count>-1 are reset to their unbound (zero) state.
3497 * In this case, the offsets and sizes associated with the
3498 * binding points are set to default values, ignoring
3499 * <offsets> and <sizes>."
3501 unbind_uniform_buffers(ctx
, first
, count
);
3505 /* Note that the error semantics for multi-bind commands differ from
3506 * those of other GL commands.
3508 * The Issues section in the ARB_multi_bind spec says:
3510 * "(11) Typically, OpenGL specifies that if an error is generated by a
3511 * command, that command has no effect. This is somewhat
3512 * unfortunate for multi-bind commands, because it would require a
3513 * first pass to scan the entire list of bound objects for errors
3514 * and then a second pass to actually perform the bindings.
3515 * Should we have different error semantics?
3517 * RESOLVED: Yes. In this specification, when the parameters for
3518 * one of the <count> binding points are invalid, that binding point
3519 * is not updated and an error will be generated. However, other
3520 * binding points in the same command will be updated if their
3521 * parameters are valid and no other error occurs."
3524 _mesa_begin_bufferobj_lookups(ctx
);
3526 for (i
= 0; i
< count
; i
++) {
3527 struct gl_uniform_buffer_binding
*binding
=
3528 &ctx
->UniformBufferBindings
[first
+ i
];
3529 struct gl_buffer_object
*bufObj
;
3531 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3534 /* The ARB_multi_bind spec says:
3536 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3537 * pair of values in <offsets> and <sizes> does not respectively
3538 * satisfy the constraints described for those parameters for the
3539 * specified target, as described in section 6.7.1 (per binding)."
3541 * Section 6.7.1 refers to table 6.5, which says:
3543 * "┌───────────────────────────────────────────────────────────────┐
3544 * │ Uniform buffer array bindings (see sec. 7.6) │
3545 * ├─────────────────────┬─────────────────────────────────────────┤
3547 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3548 * │ │ OFFSET_ALIGNMENT │
3550 * │ size restriction │ none │
3551 * └─────────────────────┴─────────────────────────────────────────┘"
3553 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3554 _mesa_error(ctx
, GL_INVALID_VALUE
,
3555 "glBindBuffersRange(offsets[%u]=%" PRId64
3556 " is misaligned; it must be a multiple of the value of "
3557 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3558 "target=GL_UNIFORM_BUFFER)",
3559 i
, (int64_t) offsets
[i
],
3560 ctx
->Const
.UniformBufferOffsetAlignment
);
3564 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3565 bufObj
= binding
->BufferObject
;
3567 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3568 "glBindBuffersRange");
3571 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3572 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, GL_FALSE
);
3574 set_ubo_binding(ctx
, binding
, bufObj
,
3575 offsets
[i
], sizes
[i
], GL_FALSE
);
3579 _mesa_end_bufferobj_lookups(ctx
);
3583 bind_shader_storage_buffers_range(struct gl_context
*ctx
, GLuint first
,
3584 GLsizei count
, const GLuint
*buffers
,
3585 const GLintptr
*offsets
,
3586 const GLsizeiptr
*sizes
)
3590 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
,
3591 "glBindBuffersRange"))
3594 /* Assume that at least one binding will be changed */
3595 FLUSH_VERTICES(ctx
, 0);
3596 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3599 /* The ARB_multi_bind spec says:
3601 * "If <buffers> is NULL, all bindings from <first> through
3602 * <first>+<count>-1 are reset to their unbound (zero) state.
3603 * In this case, the offsets and sizes associated with the
3604 * binding points are set to default values, ignoring
3605 * <offsets> and <sizes>."
3607 unbind_shader_storage_buffers(ctx
, first
, count
);
3611 /* Note that the error semantics for multi-bind commands differ from
3612 * those of other GL commands.
3614 * The Issues section in the ARB_multi_bind spec says:
3616 * "(11) Typically, OpenGL specifies that if an error is generated by a
3617 * command, that command has no effect. This is somewhat
3618 * unfortunate for multi-bind commands, because it would require a
3619 * first pass to scan the entire list of bound objects for errors
3620 * and then a second pass to actually perform the bindings.
3621 * Should we have different error semantics?
3623 * RESOLVED: Yes. In this specification, when the parameters for
3624 * one of the <count> binding points are invalid, that binding point
3625 * is not updated and an error will be generated. However, other
3626 * binding points in the same command will be updated if their
3627 * parameters are valid and no other error occurs."
3630 _mesa_begin_bufferobj_lookups(ctx
);
3632 for (i
= 0; i
< count
; i
++) {
3633 struct gl_shader_storage_buffer_binding
*binding
=
3634 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3635 struct gl_buffer_object
*bufObj
;
3637 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3640 /* The ARB_multi_bind spec says:
3642 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3643 * pair of values in <offsets> and <sizes> does not respectively
3644 * satisfy the constraints described for those parameters for the
3645 * specified target, as described in section 6.7.1 (per binding)."
3647 * Section 6.7.1 refers to table 6.5, which says:
3649 * "┌───────────────────────────────────────────────────────────────┐
3650 * │ Shader storage buffer array bindings (see sec. 7.8) │
3651 * ├─────────────────────┬─────────────────────────────────────────┤
3653 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3654 * │ │ BUFFER_OFFSET_ALIGNMENT │
3656 * │ size restriction │ none │
3657 * └─────────────────────┴─────────────────────────────────────────┘"
3659 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3660 _mesa_error(ctx
, GL_INVALID_VALUE
,
3661 "glBindBuffersRange(offsets[%u]=%" PRId64
3662 " is misaligned; it must be a multiple of the value of "
3663 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3664 "target=GL_SHADER_STORAGE_BUFFER)",
3665 i
, (int64_t) offsets
[i
],
3666 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3670 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3671 bufObj
= binding
->BufferObject
;
3673 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3674 "glBindBuffersRange");
3677 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3678 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, GL_FALSE
);
3680 set_ssbo_binding(ctx
, binding
, bufObj
,
3681 offsets
[i
], sizes
[i
], GL_FALSE
);
3685 _mesa_end_bufferobj_lookups(ctx
);
3689 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3690 struct gl_transform_feedback_object
*tfObj
,
3691 GLuint first
, GLsizei count
, const char *caller
)
3693 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3694 _mesa_error(ctx
, GL_INVALID_ENUM
,
3695 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3699 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3701 * "An INVALID_OPERATION error is generated :
3704 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3705 * FEEDBACK_BUFFER and transform feedback is currently active."
3707 * We assume that this is also meant to apply to BindBuffersRange
3708 * and BindBuffersBase.
3710 if (tfObj
->Active
) {
3711 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3712 "%s(Changing transform feedback buffers while "
3713 "transform feedback is active)", caller
);
3717 /* The ARB_multi_bind_spec says:
3719 * "An INVALID_OPERATION error is generated if <first> + <count> is
3720 * greater than the number of target-specific indexed binding points,
3721 * as described in section 6.7.1."
3723 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3724 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3725 "%s(first=%u + count=%d > the value of "
3726 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3727 caller
, first
, count
,
3728 ctx
->Const
.MaxTransformFeedbackBuffers
);
3736 * Unbind all transform feedback buffers in the range
3737 * <first> through <first>+<count>-1
3740 unbind_xfb_buffers(struct gl_context
*ctx
,
3741 struct gl_transform_feedback_object
*tfObj
,
3742 GLuint first
, GLsizei count
)
3744 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3747 for (i
= 0; i
< count
; i
++)
3748 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3753 bind_xfb_buffers_base(struct gl_context
*ctx
,
3754 GLuint first
, GLsizei count
,
3755 const GLuint
*buffers
)
3757 struct gl_transform_feedback_object
*tfObj
=
3758 ctx
->TransformFeedback
.CurrentObject
;
3761 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
,
3762 "glBindBuffersBase"))
3765 /* Assume that at least one binding will be changed */
3766 FLUSH_VERTICES(ctx
, 0);
3767 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3770 /* The ARB_multi_bind spec says:
3772 * "If <buffers> is NULL, all bindings from <first> through
3773 * <first>+<count>-1 are reset to their unbound (zero) state."
3775 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3779 /* Note that the error semantics for multi-bind commands differ from
3780 * those of other GL commands.
3782 * The Issues section in the ARB_multi_bind spec says:
3784 * "(11) Typically, OpenGL specifies that if an error is generated by a
3785 * command, that command has no effect. This is somewhat
3786 * unfortunate for multi-bind commands, because it would require a
3787 * first pass to scan the entire list of bound objects for errors
3788 * and then a second pass to actually perform the bindings.
3789 * Should we have different error semantics?
3791 * RESOLVED: Yes. In this specification, when the parameters for
3792 * one of the <count> binding points are invalid, that binding point
3793 * is not updated and an error will be generated. However, other
3794 * binding points in the same command will be updated if their
3795 * parameters are valid and no other error occurs."
3798 _mesa_begin_bufferobj_lookups(ctx
);
3800 for (i
= 0; i
< count
; i
++) {
3801 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[first
+ i
];
3802 struct gl_buffer_object
*bufObj
;
3804 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3805 bufObj
= boundBufObj
;
3807 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3808 "glBindBuffersBase");
3811 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3815 _mesa_end_bufferobj_lookups(ctx
);
3819 bind_xfb_buffers_range(struct gl_context
*ctx
,
3820 GLuint first
, GLsizei count
,
3821 const GLuint
*buffers
,
3822 const GLintptr
*offsets
,
3823 const GLsizeiptr
*sizes
)
3825 struct gl_transform_feedback_object
*tfObj
=
3826 ctx
->TransformFeedback
.CurrentObject
;
3829 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
,
3830 "glBindBuffersRange"))
3833 /* Assume that at least one binding will be changed */
3834 FLUSH_VERTICES(ctx
, 0);
3835 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3838 /* The ARB_multi_bind spec says:
3840 * "If <buffers> is NULL, all bindings from <first> through
3841 * <first>+<count>-1 are reset to their unbound (zero) state.
3842 * In this case, the offsets and sizes associated with the
3843 * binding points are set to default values, ignoring
3844 * <offsets> and <sizes>."
3846 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3850 /* Note that the error semantics for multi-bind commands differ from
3851 * those of other GL commands.
3853 * The Issues section in the ARB_multi_bind spec says:
3855 * "(11) Typically, OpenGL specifies that if an error is generated by a
3856 * command, that command has no effect. This is somewhat
3857 * unfortunate for multi-bind commands, because it would require a
3858 * first pass to scan the entire list of bound objects for errors
3859 * and then a second pass to actually perform the bindings.
3860 * Should we have different error semantics?
3862 * RESOLVED: Yes. In this specification, when the parameters for
3863 * one of the <count> binding points are invalid, that binding point
3864 * is not updated and an error will be generated. However, other
3865 * binding points in the same command will be updated if their
3866 * parameters are valid and no other error occurs."
3869 _mesa_begin_bufferobj_lookups(ctx
);
3871 for (i
= 0; i
< count
; i
++) {
3872 const GLuint index
= first
+ i
;
3873 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3874 struct gl_buffer_object
*bufObj
;
3876 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3879 /* The ARB_multi_bind spec says:
3881 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3882 * pair of values in <offsets> and <sizes> does not respectively
3883 * satisfy the constraints described for those parameters for the
3884 * specified target, as described in section 6.7.1 (per binding)."
3886 * Section 6.7.1 refers to table 6.5, which says:
3888 * "┌───────────────────────────────────────────────────────────────┐
3889 * │ Transform feedback array bindings (see sec. 13.2.2) │
3890 * ├───────────────────────┬───────────────────────────────────────┤
3892 * │ offset restriction │ multiple of 4 │
3894 * │ size restriction │ multiple of 4 │
3895 * └───────────────────────┴───────────────────────────────────────┘"
3897 if (offsets
[i
] & 0x3) {
3898 _mesa_error(ctx
, GL_INVALID_VALUE
,
3899 "glBindBuffersRange(offsets[%u]=%" PRId64
3900 " is misaligned; it must be a multiple of 4 when "
3901 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3902 i
, (int64_t) offsets
[i
]);
3906 if (sizes
[i
] & 0x3) {
3907 _mesa_error(ctx
, GL_INVALID_VALUE
,
3908 "glBindBuffersRange(sizes[%u]=%" PRId64
3909 " is misaligned; it must be a multiple of 4 when "
3910 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3911 i
, (int64_t) sizes
[i
]);
3915 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3916 bufObj
= boundBufObj
;
3918 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
3919 "glBindBuffersRange");
3922 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3923 offsets
[i
], sizes
[i
]);
3926 _mesa_end_bufferobj_lookups(ctx
);
3930 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3931 GLuint first
, GLsizei count
,
3934 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3935 _mesa_error(ctx
, GL_INVALID_ENUM
,
3936 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3940 /* The ARB_multi_bind_spec says:
3942 * "An INVALID_OPERATION error is generated if <first> + <count> is
3943 * greater than the number of target-specific indexed binding points,
3944 * as described in section 6.7.1."
3946 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3947 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3948 "%s(first=%u + count=%d > the value of "
3949 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3950 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3958 * Unbind all atomic counter buffers in the range
3959 * <first> through <first>+<count>-1
3962 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3964 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3967 for (i
= 0; i
< count
; i
++)
3968 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3973 bind_atomic_buffers_base(struct gl_context
*ctx
,
3976 const GLuint
*buffers
)
3980 if (!error_check_bind_atomic_buffers(ctx
, first
, count
,
3981 "glBindBuffersBase"))
3984 /* Assume that at least one binding will be changed */
3985 FLUSH_VERTICES(ctx
, 0);
3986 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3989 /* The ARB_multi_bind spec says:
3991 * "If <buffers> is NULL, all bindings from <first> through
3992 * <first>+<count>-1 are reset to their unbound (zero) state."
3994 unbind_atomic_buffers(ctx
, first
, count
);
3998 /* Note that the error semantics for multi-bind commands differ from
3999 * those of other GL commands.
4001 * The Issues section in the ARB_multi_bind spec says:
4003 * "(11) Typically, OpenGL specifies that if an error is generated by a
4004 * command, that command has no effect. This is somewhat
4005 * unfortunate for multi-bind commands, because it would require a
4006 * first pass to scan the entire list of bound objects for errors
4007 * and then a second pass to actually perform the bindings.
4008 * Should we have different error semantics?
4010 * RESOLVED: Yes. In this specification, when the parameters for
4011 * one of the <count> binding points are invalid, that binding point
4012 * is not updated and an error will be generated. However, other
4013 * binding points in the same command will be updated if their
4014 * parameters are valid and no other error occurs."
4017 _mesa_begin_bufferobj_lookups(ctx
);
4019 for (i
= 0; i
< count
; i
++) {
4020 struct gl_atomic_buffer_binding
*binding
=
4021 &ctx
->AtomicBufferBindings
[first
+ i
];
4022 struct gl_buffer_object
*bufObj
;
4024 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
4025 bufObj
= binding
->BufferObject
;
4027 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
4028 "glBindBuffersBase");
4031 set_atomic_buffer_binding(ctx
, binding
, bufObj
, 0, 0);
4034 _mesa_end_bufferobj_lookups(ctx
);
4038 bind_atomic_buffers_range(struct gl_context
*ctx
,
4041 const GLuint
*buffers
,
4042 const GLintptr
*offsets
,
4043 const GLsizeiptr
*sizes
)
4047 if (!error_check_bind_atomic_buffers(ctx
, first
, count
,
4048 "glBindBuffersRange"))
4051 /* Assume that at least one binding will be changed */
4052 FLUSH_VERTICES(ctx
, 0);
4053 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
4056 /* The ARB_multi_bind spec says:
4058 * "If <buffers> is NULL, all bindings from <first> through
4059 * <first>+<count>-1 are reset to their unbound (zero) state.
4060 * In this case, the offsets and sizes associated with the
4061 * binding points are set to default values, ignoring
4062 * <offsets> and <sizes>."
4064 unbind_atomic_buffers(ctx
, first
, count
);
4068 /* Note that the error semantics for multi-bind commands differ from
4069 * those of other GL commands.
4071 * The Issues section in the ARB_multi_bind spec says:
4073 * "(11) Typically, OpenGL specifies that if an error is generated by a
4074 * command, that command has no effect. This is somewhat
4075 * unfortunate for multi-bind commands, because it would require a
4076 * first pass to scan the entire list of bound objects for errors
4077 * and then a second pass to actually perform the bindings.
4078 * Should we have different error semantics?
4080 * RESOLVED: Yes. In this specification, when the parameters for
4081 * one of the <count> binding points are invalid, that binding point
4082 * is not updated and an error will be generated. However, other
4083 * binding points in the same command will be updated if their
4084 * parameters are valid and no other error occurs."
4087 _mesa_begin_bufferobj_lookups(ctx
);
4089 for (i
= 0; i
< count
; i
++) {
4090 struct gl_atomic_buffer_binding
*binding
=
4091 &ctx
->AtomicBufferBindings
[first
+ i
];
4092 struct gl_buffer_object
*bufObj
;
4094 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
4097 /* The ARB_multi_bind spec says:
4099 * "An INVALID_VALUE error is generated by BindBuffersRange if any
4100 * pair of values in <offsets> and <sizes> does not respectively
4101 * satisfy the constraints described for those parameters for the
4102 * specified target, as described in section 6.7.1 (per binding)."
4104 * Section 6.7.1 refers to table 6.5, which says:
4106 * "┌───────────────────────────────────────────────────────────────┐
4107 * │ Atomic counter array bindings (see sec. 7.7.2) │
4108 * ├───────────────────────┬───────────────────────────────────────┤
4110 * │ offset restriction │ multiple of 4 │
4112 * │ size restriction │ none │
4113 * └───────────────────────┴───────────────────────────────────────┘"
4115 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
4116 _mesa_error(ctx
, GL_INVALID_VALUE
,
4117 "glBindBuffersRange(offsets[%u]=%" PRId64
4118 " is misaligned; it must be a multiple of %d when "
4119 "target=GL_ATOMIC_COUNTER_BUFFER)",
4120 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
4124 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
4125 bufObj
= binding
->BufferObject
;
4127 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
,
4128 "glBindBuffersRange");
4131 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offsets
[i
], sizes
[i
]);
4134 _mesa_end_bufferobj_lookups(ctx
);
4138 _mesa_BindBufferRange(GLenum target
, GLuint index
,
4139 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
4141 GET_CURRENT_CONTEXT(ctx
);
4142 struct gl_buffer_object
*bufObj
;
4145 bufObj
= ctx
->Shared
->NullBufferObj
;
4147 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4149 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
4150 &bufObj
, "glBindBufferRange"))
4154 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4155 "glBindBufferRange(invalid buffer=%u)", buffer
);
4161 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
4168 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4169 _mesa_bind_buffer_range_transform_feedback(ctx
,
4170 ctx
->TransformFeedback
.CurrentObject
,
4171 index
, bufObj
, offset
, size
,
4174 case GL_UNIFORM_BUFFER
:
4175 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
4177 case GL_ATOMIC_COUNTER_BUFFER
:
4178 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
4179 "glBindBufferRange");
4182 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4188 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4190 GET_CURRENT_CONTEXT(ctx
);
4191 struct gl_buffer_object
*bufObj
;
4194 bufObj
= ctx
->Shared
->NullBufferObj
;
4196 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4198 if (!_mesa_handle_bind_buffer_gen(ctx
, target
, buffer
,
4199 &bufObj
, "glBindBufferBase"))
4203 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4204 "glBindBufferBase(invalid buffer=%u)", buffer
);
4208 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4209 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4211 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4212 * zero and size equal to the size of buffer."
4214 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4216 * "If the parameter (starting offset or size) was not specified when the
4217 * buffer object was bound, zero is returned."
4219 * What happens if the size of the buffer changes? Does the size of the
4220 * buffer at the moment glBindBufferBase was called still play a role, like
4221 * the first quote would imply, or is the size meaningless in the
4222 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4223 * core spec page 45 says:
4225 * "It is equivalent to calling BindBufferRange with offset zero, while
4226 * size is determined by the size of the bound buffer at the time the
4229 * My interpretation is that the GL 4.1 spec was a clarification of the
4230 * behavior, not a change. In particular, this choice will only make
4231 * rendering work in cases where it would have had undefined results.
4235 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4236 _mesa_bind_buffer_base_transform_feedback(ctx
,
4237 ctx
->TransformFeedback
.CurrentObject
,
4238 index
, bufObj
, false);
4240 case GL_UNIFORM_BUFFER
:
4241 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4243 case GL_ATOMIC_COUNTER_BUFFER
:
4244 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
4245 "glBindBufferBase");
4248 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4254 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4255 const GLuint
*buffers
,
4256 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4258 GET_CURRENT_CONTEXT(ctx
);
4261 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4262 bind_xfb_buffers_range(ctx
, first
, count
, buffers
, offsets
, sizes
);
4264 case GL_UNIFORM_BUFFER
:
4265 bind_uniform_buffers_range(ctx
, first
, count
, buffers
, offsets
, sizes
);
4267 case GL_SHADER_STORAGE_BUFFER
:
4268 bind_shader_storage_buffers_range(ctx
, first
, count
, buffers
, offsets
,
4271 case GL_ATOMIC_COUNTER_BUFFER
:
4272 bind_atomic_buffers_range(ctx
, first
, count
, buffers
,
4276 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4277 _mesa_lookup_enum_by_nr(target
));
4283 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4284 const GLuint
*buffers
)
4286 GET_CURRENT_CONTEXT(ctx
);
4289 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4290 bind_xfb_buffers_base(ctx
, first
, count
, buffers
);
4292 case GL_UNIFORM_BUFFER
:
4293 bind_uniform_buffers_base(ctx
, first
, count
, buffers
);
4295 case GL_SHADER_STORAGE_BUFFER
:
4296 bind_shader_storage_buffers_base(ctx
, first
, count
, buffers
);
4298 case GL_ATOMIC_COUNTER_BUFFER
:
4299 bind_atomic_buffers_base(ctx
, first
, count
, buffers
);
4302 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4303 _mesa_lookup_enum_by_nr(target
));
4309 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4312 GET_CURRENT_CONTEXT(ctx
);
4313 struct gl_buffer_object
*bufObj
;
4314 const GLintptr end
= offset
+ length
;
4316 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4318 _mesa_error(ctx
, GL_INVALID_VALUE
,
4319 "glInvalidateBufferSubData(name = 0x%x) invalid object",
4324 /* The GL_ARB_invalidate_subdata spec says:
4326 * "An INVALID_VALUE error is generated if <offset> or <length> is
4327 * negative, or if <offset> + <length> is greater than the value of
4330 if (end
< 0 || end
> bufObj
->Size
) {
4331 _mesa_error(ctx
, GL_INVALID_VALUE
,
4332 "glInvalidateBufferSubData(invalid offset or length)");
4336 /* The OpenGL 4.4 (Core Profile) spec says:
4338 * "An INVALID_OPERATION error is generated if buffer is currently
4339 * mapped by MapBuffer or if the invalidate range intersects the range
4340 * currently mapped by MapBufferRange, unless it was mapped
4341 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4343 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4344 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4345 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4346 "glInvalidateBufferSubData(intersection with mapped "
4351 /* We don't actually do anything for this yet. Just return after
4352 * validating the parameters and generating the required errors.
4358 _mesa_InvalidateBufferData(GLuint buffer
)
4360 GET_CURRENT_CONTEXT(ctx
);
4361 struct gl_buffer_object
*bufObj
;
4363 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4365 _mesa_error(ctx
, GL_INVALID_VALUE
,
4366 "glInvalidateBufferData(name = 0x%x) invalid object",
4371 /* The OpenGL 4.4 (Core Profile) spec says:
4373 * "An INVALID_OPERATION error is generated if buffer is currently
4374 * mapped by MapBuffer or if the invalidate range intersects the range
4375 * currently mapped by MapBufferRange, unless it was mapped
4376 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4378 if (_mesa_check_disallowed_mapping(bufObj
)) {
4379 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4380 "glInvalidateBufferData(intersection with mapped "
4385 /* We don't actually do anything for this yet. Just return after
4386 * validating the parameters and generating the required errors.