2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
34 #include <inttypes.h> /* for PRId64 macro */
35 #include "util/debug.h"
41 #include "bufferobj.h"
44 #include "glformats.h"
46 #include "transformfeedback.h"
52 /*#define BOUNDS_CHECK*/
56 * We count the number of buffer modification calls to check for
57 * inefficient buffer use. This is the number of such calls before we
60 #define BUFFER_WARNING_CALL_COUNT 4
64 * Helper to warn of possible performance issues, such as frequently
65 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
69 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
74 _mesa_gl_vdebug(ctx
, id
,
75 MESA_DEBUG_SOURCE_API
,
76 MESA_DEBUG_TYPE_PERFORMANCE
,
77 MESA_DEBUG_SEVERITY_MEDIUM
,
82 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
84 static GLuint id = 0; \
85 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
90 * Used as a placeholder for buffer objects between glGenBuffers() and
91 * glBindBuffer() so that glIsBuffer() can work correctly.
93 static struct gl_buffer_object DummyBufferObject
;
97 * Return pointer to address of a buffer object target.
98 * \param ctx the GL context
99 * \param target the buffer object target to be retrieved.
100 * \return pointer to pointer to the buffer object bound to \c target in the
101 * specified context or \c NULL if \c target is invalid.
103 static inline struct gl_buffer_object
**
104 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
106 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
108 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
109 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
113 case GL_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.ArrayBufferObj
;
115 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
116 return &ctx
->Array
.VAO
->IndexBufferObj
;
117 case GL_PIXEL_PACK_BUFFER_EXT
:
118 return &ctx
->Pack
.BufferObj
;
119 case GL_PIXEL_UNPACK_BUFFER_EXT
:
120 return &ctx
->Unpack
.BufferObj
;
121 case GL_COPY_READ_BUFFER
:
122 return &ctx
->CopyReadBuffer
;
123 case GL_COPY_WRITE_BUFFER
:
124 return &ctx
->CopyWriteBuffer
;
125 case GL_QUERY_BUFFER
:
126 if (_mesa_has_ARB_query_buffer_object(ctx
))
127 return &ctx
->QueryBuffer
;
129 case GL_DRAW_INDIRECT_BUFFER
:
130 if ((ctx
->API
== API_OPENGL_CORE
&&
131 ctx
->Extensions
.ARB_draw_indirect
) ||
132 _mesa_is_gles31(ctx
)) {
133 return &ctx
->DrawIndirectBuffer
;
136 case GL_PARAMETER_BUFFER_ARB
:
137 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
138 return &ctx
->ParameterBuffer
;
141 case GL_DISPATCH_INDIRECT_BUFFER
:
142 if (_mesa_has_compute_shaders(ctx
)) {
143 return &ctx
->DispatchIndirectBuffer
;
146 case GL_TRANSFORM_FEEDBACK_BUFFER
:
147 if (ctx
->Extensions
.EXT_transform_feedback
) {
148 return &ctx
->TransformFeedback
.CurrentBuffer
;
151 case GL_TEXTURE_BUFFER
:
152 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
153 _mesa_has_OES_texture_buffer(ctx
)) {
154 return &ctx
->Texture
.BufferObject
;
157 case GL_UNIFORM_BUFFER
:
158 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
159 return &ctx
->UniformBuffer
;
162 case GL_SHADER_STORAGE_BUFFER
:
163 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
164 return &ctx
->ShaderStorageBuffer
;
167 case GL_ATOMIC_COUNTER_BUFFER
:
168 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
169 return &ctx
->AtomicBuffer
;
172 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
173 if (ctx
->Extensions
.AMD_pinned_memory
) {
174 return &ctx
->ExternalVirtualMemoryBuffer
;
185 * Get the buffer object bound to the specified target in a GL context.
186 * \param ctx the GL context
187 * \param target the buffer object target to be retrieved.
188 * \param error the GL error to record if target is illegal.
189 * \return pointer to the buffer object bound to \c target in the
190 * specified context or \c NULL if \c target is invalid.
192 static inline struct gl_buffer_object
*
193 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
196 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
199 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
203 if (!_mesa_is_bufferobj(*bufObj
)) {
204 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
213 * Convert a GLbitfield describing the mapped buffer access flags
214 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
217 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
219 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
220 if ((access
& rwFlags
) == rwFlags
)
221 return GL_READ_WRITE
;
222 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
224 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
225 return GL_WRITE_ONLY
;
227 /* Otherwise, AccessFlags is zero (the default state).
229 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
231 * Name Type Initial Value Legal Values
233 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
236 * However, table 6.8 in the GL_OES_mapbuffer extension says:
238 * Get Value Type Get Command Value Description
239 * --------- ---- ----------- ----- -----------
240 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
242 * The difference is because GL_OES_mapbuffer only supports mapping buffers
247 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
252 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
254 * The regions do not overlap if and only if the end of the given
255 * region is before the mapped region or the start of the given region
256 * is after the mapped region.
258 * \param obj Buffer object target on which to operate.
259 * \param offset Offset of the first byte of the subdata range.
260 * \param size Size, in bytes, of the subdata range.
261 * \return true if ranges overlap, false otherwise
265 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
266 GLintptr offset
, GLsizeiptr size
)
268 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
269 const GLintptr end
= offset
+ size
;
270 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
271 obj
->Mappings
[MAP_USER
].Length
;
273 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
282 * Tests the subdata range parameters and sets the GL error code for
283 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
284 * \c glClearBufferSubData.
286 * \param ctx GL context.
287 * \param bufObj The buffer object.
288 * \param offset Offset of the first byte of the subdata range.
289 * \param size Size, in bytes, of the subdata range.
290 * \param mappedRange If true, checks if an overlapping range is mapped.
291 * If false, checks if buffer is mapped.
292 * \param caller Name of calling function for recording errors.
293 * \return false if error, true otherwise
295 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
298 buffer_object_subdata_range_good(struct gl_context
*ctx
,
299 const struct gl_buffer_object
*bufObj
,
300 GLintptr offset
, GLsizeiptr size
,
301 bool mappedRange
, const char *caller
)
304 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
309 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
313 if (offset
+ size
> bufObj
->Size
) {
314 _mesa_error(ctx
, GL_INVALID_VALUE
,
315 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
316 (unsigned long) offset
,
317 (unsigned long) size
,
318 (unsigned long) bufObj
->Size
);
322 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
326 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
328 "%s(range is mapped without persistent bit)",
334 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(buffer is mapped without persistent bit)",
347 * Test the format and type parameters and set the GL error code for
348 * \c glClearBufferData and \c glClearBufferSubData.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is to be converted.
352 * \param format Format of the supplied data.
353 * \param type Type of the supplied data.
354 * \param caller Name of calling function for recording errors.
355 * \return If internalformat, format and type are legal the mesa_format
356 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
358 * \sa glClearBufferData and glClearBufferSubData
361 validate_clear_buffer_format(struct gl_context
*ctx
,
362 GLenum internalformat
,
363 GLenum format
, GLenum type
,
366 mesa_format mesaFormat
;
367 GLenum errorFormatType
;
369 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
370 if (mesaFormat
== MESA_FORMAT_NONE
) {
371 _mesa_error(ctx
, GL_INVALID_ENUM
,
372 "%s(invalid internalformat)", caller
);
373 return MESA_FORMAT_NONE
;
376 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
377 * EXT_texture_integer there is no conversion between integer and
378 * non-integer formats
380 if (_mesa_is_enum_format_signed_int(format
) !=
381 _mesa_is_format_integer_color(mesaFormat
)) {
382 _mesa_error(ctx
, GL_INVALID_OPERATION
,
383 "%s(integer vs non-integer)", caller
);
384 return MESA_FORMAT_NONE
;
387 if (!_mesa_is_color_format(format
)) {
388 _mesa_error(ctx
, GL_INVALID_ENUM
,
389 "%s(format is not a color format)", caller
);
390 return MESA_FORMAT_NONE
;
393 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
394 if (errorFormatType
!= GL_NO_ERROR
) {
395 _mesa_error(ctx
, GL_INVALID_ENUM
,
396 "%s(invalid format or type)", caller
);
397 return MESA_FORMAT_NONE
;
405 * Convert user-specified clear value to the specified internal format.
407 * \param ctx GL context.
408 * \param internalformat Format to which the data is converted.
409 * \param clearValue Points to the converted clear value.
410 * \param format Format of the supplied data.
411 * \param type Type of the supplied data.
412 * \param data Data which is to be converted to internalformat.
413 * \param caller Name of calling function for recording errors.
414 * \return true if data could be converted, false otherwise.
416 * \sa glClearBufferData, glClearBufferSubData
419 convert_clear_buffer_data(struct gl_context
*ctx
,
420 mesa_format internalformat
,
421 GLubyte
*clearValue
, GLenum format
, GLenum type
,
422 const GLvoid
*data
, const char *caller
)
424 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
426 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
427 0, &clearValue
, 1, 1, 1,
428 format
, type
, data
, &ctx
->Unpack
)) {
432 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
439 * Allocate and initialize a new buffer object.
441 * Default callback for the \c dd_function_table::NewBufferObject() hook.
443 static struct gl_buffer_object
*
444 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
446 struct gl_buffer_object
*obj
;
450 obj
= MALLOC_STRUCT(gl_buffer_object
);
451 _mesa_initialize_buffer_object(ctx
, obj
, name
);
457 * Delete a buffer object.
459 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
462 _mesa_delete_buffer_object(struct gl_context
*ctx
,
463 struct gl_buffer_object
*bufObj
)
467 vbo_delete_minmax_cache(bufObj
);
468 _mesa_align_free(bufObj
->Data
);
470 /* assign strange values here to help w/ debugging */
471 bufObj
->RefCount
= -1000;
474 mtx_destroy(&bufObj
->Mutex
);
482 * Set ptr to bufObj w/ reference counting.
483 * This is normally only called from the _mesa_reference_buffer_object() macro
484 * when there's a real pointer change.
487 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
488 struct gl_buffer_object
**ptr
,
489 struct gl_buffer_object
*bufObj
)
492 /* Unreference the old buffer */
493 GLboolean deleteFlag
= GL_FALSE
;
494 struct gl_buffer_object
*oldObj
= *ptr
;
496 mtx_lock(&oldObj
->Mutex
);
497 assert(oldObj
->RefCount
> 0);
499 deleteFlag
= (oldObj
->RefCount
== 0);
500 mtx_unlock(&oldObj
->Mutex
);
503 assert(ctx
->Driver
.DeleteBuffer
);
504 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
512 /* reference new buffer */
513 mtx_lock(&bufObj
->Mutex
);
514 if (bufObj
->RefCount
== 0) {
515 /* this buffer's being deleted (look just above) */
516 /* Not sure this can every really happen. Warn if it does. */
517 _mesa_problem(NULL
, "referencing deleted buffer object");
524 mtx_unlock(&bufObj
->Mutex
);
530 * Get the value of MESA_NO_MINMAX_CACHE.
533 get_no_minmax_cache()
535 static bool read
= false;
536 static bool disable
= false;
539 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
548 * Initialize a buffer object to default values.
551 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
552 struct gl_buffer_object
*obj
,
555 memset(obj
, 0, sizeof(struct gl_buffer_object
));
556 mtx_init(&obj
->Mutex
, mtx_plain
);
559 obj
->Usage
= GL_STATIC_DRAW_ARB
;
561 if (get_no_minmax_cache())
562 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
568 * Callback called from _mesa_HashWalk()
571 count_buffer_size(GLuint key
, void *data
, void *userData
)
573 const struct gl_buffer_object
*bufObj
=
574 (const struct gl_buffer_object
*) data
;
575 GLuint
*total
= (GLuint
*) userData
;
578 *total
= *total
+ bufObj
->Size
;
583 * Compute total size (in bytes) of all buffer objects for the given context.
584 * For debugging purposes.
587 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
591 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
598 * Allocate space for and store data in a buffer object. Any data that was
599 * previously stored in the buffer object is lost. If \c data is \c NULL,
600 * memory will be allocated, but no copy will occur.
602 * This is the default callback for \c dd_function_table::BufferData()
603 * Note that all GL error checking will have been done already.
605 * \param ctx GL context.
606 * \param target Buffer object target on which to operate.
607 * \param size Size, in bytes, of the new data store.
608 * \param data Pointer to the data to store in the buffer object. This
609 * pointer may be \c NULL.
610 * \param usage Hints about how the data will be used.
611 * \param bufObj Object to be used.
613 * \return GL_TRUE for success, GL_FALSE for failure
614 * \sa glBufferDataARB, dd_function_table::BufferData.
617 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
618 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
619 struct gl_buffer_object
*bufObj
)
625 _mesa_align_free( bufObj
->Data
);
627 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
629 bufObj
->Data
= (GLubyte
*) new_data
;
631 bufObj
->Usage
= usage
;
632 bufObj
->StorageFlags
= storageFlags
;
635 memcpy( bufObj
->Data
, data
, size
);
647 * Replace data in a subrange of buffer object. If the data range
648 * specified by \c size + \c offset extends beyond the end of the buffer or
649 * if \c data is \c NULL, no copy is performed.
651 * This is the default callback for \c dd_function_table::BufferSubData()
652 * Note that all GL error checking will have been done already.
654 * \param ctx GL context.
655 * \param offset Offset of the first byte to be modified.
656 * \param size Size, in bytes, of the data range.
657 * \param data Pointer to the data to store in the buffer object.
658 * \param bufObj Object to be used.
660 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
663 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
664 GLsizeiptr size
, const GLvoid
*data
,
665 struct gl_buffer_object
*bufObj
)
669 /* this should have been caught in _mesa_BufferSubData() */
670 assert(size
+ offset
<= bufObj
->Size
);
673 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
679 * Retrieve data from a subrange of buffer object. If the data range
680 * specified by \c size + \c offset extends beyond the end of the buffer or
681 * if \c data is \c NULL, no copy is performed.
683 * This is the default callback for \c dd_function_table::GetBufferSubData()
684 * Note that all GL error checking will have been done already.
686 * \param ctx GL context.
687 * \param target Buffer object target on which to operate.
688 * \param offset Offset of the first byte to be fetched.
689 * \param size Size, in bytes, of the data range.
690 * \param data Destination for data
691 * \param bufObj Object to be used.
693 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
696 _mesa_buffer_get_subdata( struct gl_context
*ctx
, GLintptrARB offset
,
697 GLsizeiptrARB size
, GLvoid
* data
,
698 struct gl_buffer_object
* bufObj
)
702 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
703 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
709 * Clear a subrange of the buffer object with copies of the supplied data.
710 * If data is NULL the buffer is filled with zeros.
712 * This is the default callback for \c dd_function_table::ClearBufferSubData()
713 * Note that all GL error checking will have been done already.
715 * \param ctx GL context.
716 * \param offset Offset of the first byte to be cleared.
717 * \param size Size, in bytes, of the to be cleared range.
718 * \param clearValue Source of the data.
719 * \param clearValueSize Size, in bytes, of the supplied data.
720 * \param bufObj Object to be cleared.
722 * \sa glClearBufferSubData, glClearBufferData and
723 * dd_function_table::ClearBufferSubData.
726 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
727 GLintptr offset
, GLsizeiptr size
,
728 const GLvoid
*clearValue
,
729 GLsizeiptr clearValueSize
,
730 struct gl_buffer_object
*bufObj
)
735 assert(ctx
->Driver
.MapBufferRange
);
736 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
738 GL_MAP_INVALIDATE_RANGE_BIT
,
739 bufObj
, MAP_INTERNAL
);
742 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
746 if (clearValue
== NULL
) {
747 /* Clear with zeros, per the spec */
748 memset(dest
, 0, size
);
749 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
753 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
754 memcpy(dest
, clearValue
, clearValueSize
);
755 dest
+= clearValueSize
;
758 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
763 * Default fallback for \c dd_function_table::MapBufferRange().
764 * Called via glMapBufferRange().
767 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
768 GLsizeiptr length
, GLbitfield access
,
769 struct gl_buffer_object
*bufObj
,
770 gl_map_buffer_index index
)
773 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
774 /* Just return a direct pointer to the data */
775 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
776 bufObj
->Mappings
[index
].Length
= length
;
777 bufObj
->Mappings
[index
].Offset
= offset
;
778 bufObj
->Mappings
[index
].AccessFlags
= access
;
779 return bufObj
->Mappings
[index
].Pointer
;
784 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
785 * Called via glFlushMappedBufferRange().
788 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
789 GLintptr offset
, GLsizeiptr length
,
790 struct gl_buffer_object
*obj
,
791 gl_map_buffer_index index
)
803 * Default callback for \c dd_function_table::UnmapBuffer().
805 * The input parameters will have been already tested for errors.
807 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
810 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
811 gl_map_buffer_index index
)
814 /* XXX we might assert here that bufObj->Pointer is non-null */
815 bufObj
->Mappings
[index
].Pointer
= NULL
;
816 bufObj
->Mappings
[index
].Length
= 0;
817 bufObj
->Mappings
[index
].Offset
= 0;
818 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
824 * Default fallback for \c dd_function_table::CopyBufferSubData().
825 * Called via glCopyBufferSubData().
828 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
829 struct gl_buffer_object
*src
,
830 struct gl_buffer_object
*dst
,
831 GLintptr readOffset
, GLintptr writeOffset
,
834 GLubyte
*srcPtr
, *dstPtr
;
837 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
839 GL_MAP_WRITE_BIT
, src
,
845 srcPtr
+= readOffset
;
846 dstPtr
+= writeOffset
;
848 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
849 GL_MAP_READ_BIT
, src
,
851 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
853 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
857 /* Note: the src and dst regions will never overlap. Trying to do so
858 * would generate GL_INVALID_VALUE earlier.
860 if (srcPtr
&& dstPtr
)
861 memcpy(dstPtr
, srcPtr
, size
);
863 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
865 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
871 * Initialize the state associated with buffer objects
874 _mesa_init_buffer_objects( struct gl_context
*ctx
)
878 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
879 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
880 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
882 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
883 ctx
->Shared
->NullBufferObj
);
885 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
886 ctx
->Shared
->NullBufferObj
);
887 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
888 ctx
->Shared
->NullBufferObj
);
890 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
891 ctx
->Shared
->NullBufferObj
);
893 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
894 ctx
->Shared
->NullBufferObj
);
896 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
897 ctx
->Shared
->NullBufferObj
);
899 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
900 ctx
->Shared
->NullBufferObj
);
902 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
903 ctx
->Shared
->NullBufferObj
);
905 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
906 ctx
->Shared
->NullBufferObj
);
908 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
909 ctx
->Shared
->NullBufferObj
);
911 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
912 _mesa_reference_buffer_object(ctx
,
913 &ctx
->UniformBufferBindings
[i
].BufferObject
,
914 ctx
->Shared
->NullBufferObj
);
915 ctx
->UniformBufferBindings
[i
].Offset
= -1;
916 ctx
->UniformBufferBindings
[i
].Size
= -1;
919 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
920 _mesa_reference_buffer_object(ctx
,
921 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
922 ctx
->Shared
->NullBufferObj
);
923 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
924 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
927 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
928 _mesa_reference_buffer_object(ctx
,
929 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
930 ctx
->Shared
->NullBufferObj
);
931 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
932 ctx
->AtomicBufferBindings
[i
].Size
= 0;
938 _mesa_free_buffer_objects( struct gl_context
*ctx
)
942 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
944 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
945 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
947 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
949 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
951 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
953 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
955 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
957 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
959 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
961 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
962 _mesa_reference_buffer_object(ctx
,
963 &ctx
->UniformBufferBindings
[i
].BufferObject
,
967 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
968 _mesa_reference_buffer_object(ctx
,
969 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
973 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
974 _mesa_reference_buffer_object(ctx
,
975 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
982 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
984 struct gl_buffer_object
**buf_handle
,
987 struct gl_buffer_object
*buf
= *buf_handle
;
989 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
990 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
994 if (!buf
|| buf
== &DummyBufferObject
) {
995 /* If this is a new buffer object id, or one which was generated but
996 * never used before, allocate a buffer object now.
998 assert(ctx
->Driver
.NewBufferObject
);
999 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
1001 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
1004 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1012 * Bind the specified target to buffer for the specified context.
1013 * Called by glBindBuffer() and other functions.
1016 bind_buffer_object(struct gl_context
*ctx
,
1017 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1019 struct gl_buffer_object
*oldBufObj
;
1020 struct gl_buffer_object
*newBufObj
= NULL
;
1024 /* Get pointer to old buffer object (to be unbound) */
1025 oldBufObj
= *bindTarget
;
1026 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1027 return; /* rebinding the same buffer object- no change */
1030 * Get pointer to new buffer object (newBufObj)
1033 /* The spec says there's not a buffer object named 0, but we use
1034 * one internally because it simplifies things.
1036 newBufObj
= ctx
->Shared
->NullBufferObj
;
1039 /* non-default buffer object */
1040 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1041 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1042 &newBufObj
, "glBindBuffer"))
1046 /* record usage history */
1047 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1048 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1051 /* bind new buffer */
1052 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1057 * Update the default buffer objects in the given context to reference those
1058 * specified in the shared state and release those referencing the old
1062 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1064 /* Bind the NullBufferObj to remove references to those
1065 * in the shared context hash table.
1067 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1068 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1069 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1070 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1076 * Return the gl_buffer_object for the given ID.
1077 * Always return NULL for ID 0.
1079 struct gl_buffer_object
*
1080 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1085 return (struct gl_buffer_object
*)
1086 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1090 struct gl_buffer_object
*
1091 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1096 return (struct gl_buffer_object
*)
1097 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1101 * A convenience function for direct state access functions that throws
1102 * GL_INVALID_OPERATION if buffer is not the name of an existing
1105 struct gl_buffer_object
*
1106 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1109 struct gl_buffer_object
*bufObj
;
1111 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1112 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1113 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1114 "%s(non-existent buffer object %u)", caller
, buffer
);
1123 _mesa_begin_bufferobj_lookups(struct gl_context
*ctx
)
1125 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1130 _mesa_end_bufferobj_lookups(struct gl_context
*ctx
)
1132 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1137 * Look up a buffer object for a multi-bind function.
1139 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1140 * of generating an error if the buffer ID is not zero or the name
1141 * of an existing buffer object.
1143 * If the buffer ID refers to an existing buffer object, a pointer
1144 * to the buffer object is returned. If the ID is zero, a pointer
1145 * to the shared NullBufferObj is returned. If the ID is not zero
1146 * and does not refer to a valid buffer object, this function
1149 * This function assumes that the caller has already locked the
1150 * hash table mutex by calling _mesa_begin_bufferobj_lookups().
1152 struct gl_buffer_object
*
1153 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1154 const GLuint
*buffers
,
1155 GLuint index
, const char *caller
)
1157 struct gl_buffer_object
*bufObj
;
1159 if (buffers
[index
] != 0) {
1160 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1162 /* The multi-bind functions don't create the buffer objects
1163 when they don't exist. */
1164 if (bufObj
== &DummyBufferObject
)
1167 bufObj
= ctx
->Shared
->NullBufferObj
;
1170 /* The ARB_multi_bind spec says:
1172 * "An INVALID_OPERATION error is generated if any value
1173 * in <buffers> is not zero or the name of an existing
1174 * buffer object (per binding)."
1176 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1177 "%s(buffers[%u]=%u is not zero or the name "
1178 "of an existing buffer object)",
1179 caller
, index
, buffers
[index
]);
1187 * If *ptr points to obj, set ptr = the Null/default buffer object.
1188 * This is a helper for buffer object deletion.
1189 * The GL spec says that deleting a buffer object causes it to get
1190 * unbound from all arrays in the current context.
1193 unbind(struct gl_context
*ctx
,
1194 struct gl_vertex_array_object
*vao
, unsigned index
,
1195 struct gl_buffer_object
*obj
)
1197 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1198 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1199 vao
->BufferBinding
[index
].Offset
,
1200 vao
->BufferBinding
[index
].Stride
);
1206 * Plug default/fallback buffer object functions into the device
1210 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1212 /* GL_ARB_vertex/pixel_buffer_object */
1213 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1214 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1215 driver
->BufferData
= buffer_data_fallback
;
1216 driver
->BufferSubData
= buffer_sub_data_fallback
;
1217 driver
->GetBufferSubData
= _mesa_buffer_get_subdata
;
1218 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1220 /* GL_ARB_clear_buffer_object */
1221 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1223 /* GL_ARB_map_buffer_range */
1224 driver
->MapBufferRange
= map_buffer_range_fallback
;
1225 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1227 /* GL_ARB_copy_buffer */
1228 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1233 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1234 struct gl_buffer_object
*bufObj
)
1238 for (i
= 0; i
< MAP_COUNT
; i
++) {
1239 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1240 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1241 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1242 bufObj
->Mappings
[i
].AccessFlags
= 0;
1248 /**********************************************************************/
1250 /**********************************************************************/
1253 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1255 GET_CURRENT_CONTEXT(ctx
);
1257 if (MESA_VERBOSE
& VERBOSE_API
) {
1258 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1259 _mesa_enum_to_string(target
), buffer
);
1262 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1264 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1265 _mesa_enum_to_string(target
));
1269 bind_buffer_object(ctx
, bindTarget
, buffer
);
1274 * Delete a set of buffer objects.
1276 * \param n Number of buffer objects to delete.
1277 * \param ids Array of \c n buffer object IDs.
1280 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1282 GET_CURRENT_CONTEXT(ctx
);
1284 FLUSH_VERTICES(ctx
, 0);
1287 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1291 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1293 for (i
= 0; i
< n
; i
++) {
1294 struct gl_buffer_object
*bufObj
=
1295 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1297 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1300 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1302 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1304 /* unbind any vertex pointers bound to this buffer */
1305 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1306 unbind(ctx
, vao
, j
, bufObj
);
1309 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1310 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1312 if (vao
->IndexBufferObj
== bufObj
) {
1313 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1316 /* unbind ARB_draw_indirect binding point */
1317 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1318 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1321 /* unbind ARB_indirect_parameters binding point */
1322 if (ctx
->ParameterBuffer
== bufObj
) {
1323 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1326 /* unbind ARB_compute_shader binding point */
1327 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1328 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1331 /* unbind ARB_copy_buffer binding points */
1332 if (ctx
->CopyReadBuffer
== bufObj
) {
1333 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1335 if (ctx
->CopyWriteBuffer
== bufObj
) {
1336 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1339 /* unbind transform feedback binding points */
1340 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1341 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1343 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1344 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1345 _mesa_BindBufferBase( GL_TRANSFORM_FEEDBACK_BUFFER
, j
, 0 );
1349 /* unbind UBO binding points */
1350 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1351 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1352 _mesa_BindBufferBase( GL_UNIFORM_BUFFER
, j
, 0 );
1356 if (ctx
->UniformBuffer
== bufObj
) {
1357 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1360 /* unbind SSBO binding points */
1361 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1362 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1363 _mesa_BindBufferBase(GL_SHADER_STORAGE_BUFFER
, j
, 0);
1367 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1368 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1371 /* unbind Atomci Buffer binding points */
1372 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1373 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1374 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1378 if (ctx
->AtomicBuffer
== bufObj
) {
1379 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1382 /* unbind any pixel pack/unpack pointers bound to this buffer */
1383 if (ctx
->Pack
.BufferObj
== bufObj
) {
1384 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1386 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1387 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1390 if (ctx
->Texture
.BufferObject
== bufObj
) {
1391 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1394 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1395 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1398 /* unbind query buffer binding point */
1399 if (ctx
->QueryBuffer
== bufObj
) {
1400 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1403 /* The ID is immediately freed for re-use */
1404 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1405 /* Make sure we do not run into the classic ABA problem on bind.
1406 * We don't want to allow re-binding a buffer object that's been
1407 * "deleted" by glDeleteBuffers().
1409 * The explicit rebinding to the default object in the current context
1410 * prevents the above in the current context, but another context
1411 * sharing the same objects might suffer from this problem.
1412 * The alternative would be to do the hash lookup in any case on bind
1413 * which would introduce more runtime overhead than this.
1415 bufObj
->DeletePending
= GL_TRUE
;
1416 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1420 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1425 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1426 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1430 create_buffers(GLsizei n
, GLuint
*buffers
, bool dsa
)
1432 GET_CURRENT_CONTEXT(ctx
);
1435 struct gl_buffer_object
*buf
;
1437 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1439 if (MESA_VERBOSE
& VERBOSE_API
)
1440 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1443 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1452 * This must be atomic (generation and allocation of buffer object IDs)
1454 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1456 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1458 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1459 * DummyBufferObject. Otherwise, create a new buffer object and insert
1462 for (i
= 0; i
< n
; i
++) {
1463 buffers
[i
] = first
+ i
;
1465 assert(ctx
->Driver
.NewBufferObject
);
1466 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1468 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1469 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1474 buf
= &DummyBufferObject
;
1476 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1479 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1483 * Generate a set of unique buffer object IDs and store them in \c buffers.
1485 * \param n Number of IDs to generate.
1486 * \param buffers Array of \c n locations to store the IDs.
1489 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1491 create_buffers(n
, buffers
, false);
1495 * Create a set of buffer objects and store their unique IDs in \c buffers.
1497 * \param n Number of IDs to generate.
1498 * \param buffers Array of \c n locations to store the IDs.
1501 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1503 create_buffers(n
, buffers
, true);
1508 * Determine if ID is the name of a buffer object.
1510 * \param id ID of the potential buffer object.
1511 * \return \c GL_TRUE if \c id is the name of a buffer object,
1512 * \c GL_FALSE otherwise.
1514 GLboolean GLAPIENTRY
1515 _mesa_IsBuffer(GLuint id
)
1517 struct gl_buffer_object
*bufObj
;
1518 GET_CURRENT_CONTEXT(ctx
);
1519 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1521 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1523 return bufObj
&& bufObj
!= &DummyBufferObject
;
1528 _mesa_buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1529 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1530 GLbitfield flags
, const char *func
)
1533 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1537 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1539 GL_MAP_PERSISTENT_BIT
|
1540 GL_MAP_COHERENT_BIT
|
1541 GL_DYNAMIC_STORAGE_BIT
|
1542 GL_CLIENT_STORAGE_BIT
;
1544 if (ctx
->Extensions
.ARB_sparse_buffer
)
1545 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1547 if (flags
& ~valid_flags
) {
1548 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1552 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1554 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1555 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1556 * MAP_READ_BIT or MAP_WRITE_BIT."
1558 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1559 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1560 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1564 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1565 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1566 _mesa_error(ctx
, GL_INVALID_VALUE
,
1567 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1571 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1572 _mesa_error(ctx
, GL_INVALID_VALUE
,
1573 "%s(COHERENT and flags!=PERSISTENT)", func
);
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
;
1588 bufObj
->Immutable
= GL_TRUE
;
1589 bufObj
->MinMaxCacheDirty
= true;
1591 assert(ctx
->Driver
.BufferData
);
1592 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1594 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1595 /* Even though the interaction between AMD_pinned_memory and
1596 * glBufferStorage is not described in the spec, Graham Sellers
1597 * said that it should behave the same as glBufferData.
1599 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1602 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1608 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1611 GET_CURRENT_CONTEXT(ctx
);
1612 struct gl_buffer_object
*bufObj
;
1614 bufObj
= get_buffer(ctx
, "glBufferStorage", target
, GL_INVALID_OPERATION
);
1618 _mesa_buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
,
1623 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1626 GET_CURRENT_CONTEXT(ctx
);
1627 struct gl_buffer_object
*bufObj
;
1629 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferStorage");
1634 * In direct state access, buffer objects have an unspecified target since
1635 * they are not required to be bound.
1637 _mesa_buffer_storage(ctx
, bufObj
, GL_NONE
, size
, data
, flags
,
1638 "glNamedBufferStorage");
1643 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1644 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1645 GLenum usage
, const char *func
)
1649 if (MESA_VERBOSE
& VERBOSE_API
) {
1650 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1652 _mesa_enum_to_string(target
),
1653 (long int) size
, data
,
1654 _mesa_enum_to_string(usage
));
1658 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1663 case GL_STREAM_DRAW_ARB
:
1664 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1667 case GL_STATIC_DRAW_ARB
:
1668 case GL_DYNAMIC_DRAW_ARB
:
1672 case GL_STREAM_READ_ARB
:
1673 case GL_STREAM_COPY_ARB
:
1674 case GL_STATIC_READ_ARB
:
1675 case GL_STATIC_COPY_ARB
:
1676 case GL_DYNAMIC_READ_ARB
:
1677 case GL_DYNAMIC_COPY_ARB
:
1678 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1682 valid_usage
= false;
1687 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1688 _mesa_enum_to_string(usage
));
1692 if (bufObj
->Immutable
) {
1693 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1697 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1698 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1700 FLUSH_VERTICES(ctx
, _NEW_BUFFER_OBJECT
);
1702 bufObj
->Written
= GL_TRUE
;
1703 bufObj
->MinMaxCacheDirty
= true;
1706 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1707 bufObj
->Name
, size
, data
, usage
);
1714 assert(ctx
->Driver
.BufferData
);
1715 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1718 GL_DYNAMIC_STORAGE_BIT
,
1720 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1721 /* From GL_AMD_pinned_memory:
1723 * INVALID_OPERATION is generated by BufferData if <target> is
1724 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
1725 * mapped to the GPU address space.
1727 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1730 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1736 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
1737 const GLvoid
*data
, GLenum usage
)
1739 GET_CURRENT_CONTEXT(ctx
);
1740 struct gl_buffer_object
*bufObj
;
1742 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
1746 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
1751 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1754 GET_CURRENT_CONTEXT(ctx
);
1755 struct gl_buffer_object
*bufObj
;
1757 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
1761 /* In direct state access, buffer objects have an unspecified target since
1762 * they are not required to be bound.
1764 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
1765 "glNamedBufferData");
1770 * Implementation for glBufferSubData and glNamedBufferSubData.
1772 * \param ctx GL context.
1773 * \param bufObj The buffer object.
1774 * \param offset Offset of the first byte of the subdata range.
1775 * \param size Size, in bytes, of the subdata range.
1776 * \param data The data store.
1777 * \param func Name of calling function for recording errors.
1781 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1782 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
,
1785 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1787 /* error already recorded */
1791 if (bufObj
->Immutable
&&
1792 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
1793 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1800 bufObj
->NumSubDataCalls
++;
1802 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
1803 bufObj
->Usage
== GL_STATIC_COPY
) &&
1804 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
) {
1805 /* If the application declared the buffer as static draw/copy or stream
1806 * draw, it should not be frequently modified with glBufferSubData.
1808 BUFFER_USAGE_WARNING(ctx
,
1809 "using %s(buffer %u, offset %u, size %u) to "
1810 "update a %s buffer",
1811 func
, bufObj
->Name
, offset
, size
,
1812 _mesa_enum_to_string(bufObj
->Usage
));
1815 bufObj
->Written
= GL_TRUE
;
1816 bufObj
->MinMaxCacheDirty
= true;
1818 assert(ctx
->Driver
.BufferSubData
);
1819 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
1823 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
1824 GLsizeiptr size
, const GLvoid
*data
)
1826 GET_CURRENT_CONTEXT(ctx
);
1827 struct gl_buffer_object
*bufObj
;
1829 bufObj
= get_buffer(ctx
, "glBufferSubData", target
, GL_INVALID_OPERATION
);
1833 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
, "glBufferSubData");
1837 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
1838 GLsizeiptr size
, const GLvoid
*data
)
1840 GET_CURRENT_CONTEXT(ctx
);
1841 struct gl_buffer_object
*bufObj
;
1843 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferSubData");
1847 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
,
1848 "glNamedBufferSubData");
1853 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
1854 GLsizeiptr size
, GLvoid
*data
)
1856 GET_CURRENT_CONTEXT(ctx
);
1857 struct gl_buffer_object
*bufObj
;
1859 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
1860 GL_INVALID_OPERATION
);
1864 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1865 "glGetBufferSubData")) {
1869 assert(ctx
->Driver
.GetBufferSubData
);
1870 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1874 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
1875 GLsizeiptr size
, GLvoid
*data
)
1877 GET_CURRENT_CONTEXT(ctx
);
1878 struct gl_buffer_object
*bufObj
;
1880 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
1881 "glGetNamedBufferSubData");
1885 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
1886 "glGetNamedBufferSubData")) {
1890 assert(ctx
->Driver
.GetBufferSubData
);
1891 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
1896 * \param subdata true if caller is *SubData, false if *Data
1899 _mesa_clear_buffer_sub_data(struct gl_context
*ctx
,
1900 struct gl_buffer_object
*bufObj
,
1901 GLenum internalformat
,
1902 GLintptr offset
, GLsizeiptr size
,
1903 GLenum format
, GLenum type
,
1905 const char *func
, bool subdata
)
1907 mesa_format mesaFormat
;
1908 GLubyte clearValue
[MAX_PIXEL_BYTES
];
1909 GLsizeiptr clearValueSize
;
1911 /* This checks for disallowed mappings. */
1912 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
1917 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
1918 format
, type
, func
);
1920 if (mesaFormat
== MESA_FORMAT_NONE
) {
1924 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
1925 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
1926 _mesa_error(ctx
, GL_INVALID_VALUE
,
1927 "%s(offset or size is not a multiple of "
1928 "internalformat size)", func
);
1932 /* Bail early. Negative size has already been checked. */
1936 bufObj
->MinMaxCacheDirty
= true;
1939 /* clear to zeros, per the spec */
1940 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1941 NULL
, clearValueSize
, bufObj
);
1945 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
1946 format
, type
, data
, func
)) {
1950 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
1951 clearValue
, clearValueSize
, bufObj
);
1955 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
1956 GLenum type
, const GLvoid
*data
)
1958 GET_CURRENT_CONTEXT(ctx
);
1959 struct gl_buffer_object
*bufObj
;
1961 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
1965 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1967 "glClearBufferData", false);
1971 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
1972 GLenum format
, GLenum type
, const GLvoid
*data
)
1974 GET_CURRENT_CONTEXT(ctx
);
1975 struct gl_buffer_object
*bufObj
;
1977 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
1981 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
1983 "glClearNamedBufferData", false);
1988 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
1989 GLintptr offset
, GLsizeiptr size
,
1990 GLenum format
, GLenum type
,
1993 GET_CURRENT_CONTEXT(ctx
);
1994 struct gl_buffer_object
*bufObj
;
1996 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2000 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2002 "glClearBufferSubData", true);
2006 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2007 GLintptr offset
, GLsizeiptr size
,
2008 GLenum format
, GLenum type
,
2011 GET_CURRENT_CONTEXT(ctx
);
2012 struct gl_buffer_object
*bufObj
;
2014 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2015 "glClearNamedBufferSubData");
2019 _mesa_clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2021 "glClearNamedBufferSubData", true);
2026 _mesa_unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2029 GLboolean status
= GL_TRUE
;
2030 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2032 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2033 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2034 "%s(buffer is not mapped)", func
);
2039 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2040 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2042 /* check that last 100 bytes are still = magic value */
2043 for (i
= 0; i
< 100; i
++) {
2044 GLuint pos
= bufObj
->Size
- i
- 1;
2045 if (buf
[pos
] != 123) {
2046 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2047 " at position %d (value = %u)\n",
2055 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2056 GLuint i
, unchanged
= 0;
2057 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2059 /* check which bytes changed */
2060 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2061 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2068 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2069 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2074 status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2075 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2076 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2077 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2078 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2083 GLboolean GLAPIENTRY
2084 _mesa_UnmapBuffer(GLenum target
)
2086 GET_CURRENT_CONTEXT(ctx
);
2087 struct gl_buffer_object
*bufObj
;
2089 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2093 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2096 GLboolean GLAPIENTRY
2097 _mesa_UnmapNamedBuffer(GLuint buffer
)
2099 GET_CURRENT_CONTEXT(ctx
);
2100 struct gl_buffer_object
*bufObj
;
2102 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2106 return _mesa_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2111 get_buffer_parameter(struct gl_context
*ctx
,
2112 struct gl_buffer_object
*bufObj
, GLenum pname
,
2113 GLint64
*params
, const char *func
)
2116 case GL_BUFFER_SIZE_ARB
:
2117 *params
= bufObj
->Size
;
2119 case GL_BUFFER_USAGE_ARB
:
2120 *params
= bufObj
->Usage
;
2122 case GL_BUFFER_ACCESS_ARB
:
2123 *params
= simplified_access_mode(ctx
,
2124 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2126 case GL_BUFFER_MAPPED_ARB
:
2127 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2129 case GL_BUFFER_ACCESS_FLAGS
:
2130 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2132 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2134 case GL_BUFFER_MAP_OFFSET
:
2135 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2137 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2139 case GL_BUFFER_MAP_LENGTH
:
2140 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2142 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2144 case GL_BUFFER_IMMUTABLE_STORAGE
:
2145 if (!ctx
->Extensions
.ARB_buffer_storage
)
2147 *params
= bufObj
->Immutable
;
2149 case GL_BUFFER_STORAGE_FLAGS
:
2150 if (!ctx
->Extensions
.ARB_buffer_storage
)
2152 *params
= bufObj
->StorageFlags
;
2161 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2162 _mesa_enum_to_string(pname
));
2167 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2169 GET_CURRENT_CONTEXT(ctx
);
2170 struct gl_buffer_object
*bufObj
;
2173 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2174 GL_INVALID_OPERATION
);
2178 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2179 "glGetBufferParameteriv"))
2180 return; /* Error already recorded. */
2182 *params
= (GLint
) parameter
;
2186 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2188 GET_CURRENT_CONTEXT(ctx
);
2189 struct gl_buffer_object
*bufObj
;
2192 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2193 GL_INVALID_OPERATION
);
2197 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2198 "glGetBufferParameteri64v"))
2199 return; /* Error already recorded. */
2201 *params
= parameter
;
2205 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2207 GET_CURRENT_CONTEXT(ctx
);
2208 struct gl_buffer_object
*bufObj
;
2211 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2212 "glGetNamedBufferParameteriv");
2216 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2217 "glGetNamedBufferParameteriv"))
2218 return; /* Error already recorded. */
2220 *params
= (GLint
) parameter
;
2224 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2227 GET_CURRENT_CONTEXT(ctx
);
2228 struct gl_buffer_object
*bufObj
;
2231 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2232 "glGetNamedBufferParameteri64v");
2236 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2237 "glGetNamedBufferParameteri64v"))
2238 return; /* Error already recorded. */
2240 *params
= parameter
;
2245 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2247 GET_CURRENT_CONTEXT(ctx
);
2248 struct gl_buffer_object
*bufObj
;
2250 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2251 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2252 "GL_BUFFER_MAP_POINTER)");
2256 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2257 GL_INVALID_OPERATION
);
2261 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2265 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2267 GET_CURRENT_CONTEXT(ctx
);
2268 struct gl_buffer_object
*bufObj
;
2270 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2271 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2272 "GL_BUFFER_MAP_POINTER)");
2276 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2277 "glGetNamedBufferPointerv");
2281 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2286 _mesa_copy_buffer_sub_data(struct gl_context
*ctx
,
2287 struct gl_buffer_object
*src
,
2288 struct gl_buffer_object
*dst
,
2289 GLintptr readOffset
, GLintptr writeOffset
,
2290 GLsizeiptr size
, const char *func
)
2292 if (_mesa_check_disallowed_mapping(src
)) {
2293 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2294 "%s(readBuffer is mapped)", func
);
2298 if (_mesa_check_disallowed_mapping(dst
)) {
2299 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2300 "%s(writeBuffer is mapped)", func
);
2304 if (readOffset
< 0) {
2305 _mesa_error(ctx
, GL_INVALID_VALUE
,
2306 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2310 if (writeOffset
< 0) {
2311 _mesa_error(ctx
, GL_INVALID_VALUE
,
2312 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2317 _mesa_error(ctx
, GL_INVALID_VALUE
,
2318 "%s(size %d < 0)", func
, (int) size
);
2322 if (readOffset
+ size
> src
->Size
) {
2323 _mesa_error(ctx
, GL_INVALID_VALUE
,
2324 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2325 (int) readOffset
, (int) size
, (int) src
->Size
);
2329 if (writeOffset
+ size
> dst
->Size
) {
2330 _mesa_error(ctx
, GL_INVALID_VALUE
,
2331 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2332 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2337 if (readOffset
+ size
<= writeOffset
) {
2340 else if (writeOffset
+ size
<= readOffset
) {
2344 /* overlapping src/dst is illegal */
2345 _mesa_error(ctx
, GL_INVALID_VALUE
,
2346 "%s(overlapping src/dst)", func
);
2351 dst
->MinMaxCacheDirty
= true;
2353 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2357 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2358 GLintptr readOffset
, GLintptr writeOffset
,
2361 GET_CURRENT_CONTEXT(ctx
);
2362 struct gl_buffer_object
*src
, *dst
;
2364 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2365 GL_INVALID_OPERATION
);
2369 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2370 GL_INVALID_OPERATION
);
2374 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2375 "glCopyBufferSubData");
2379 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2380 GLintptr readOffset
, GLintptr writeOffset
,
2383 GET_CURRENT_CONTEXT(ctx
);
2384 struct gl_buffer_object
*src
, *dst
;
2386 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2387 "glCopyNamedBufferSubData");
2391 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2392 "glCopyNamedBufferSubData");
2396 _mesa_copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2397 "glCopyNamedBufferSubData");
2402 _mesa_map_buffer_range(struct gl_context
*ctx
,
2403 struct gl_buffer_object
*bufObj
,
2404 GLintptr offset
, GLsizeiptr length
,
2405 GLbitfield access
, const char *func
)
2408 GLbitfield allowed_access
;
2410 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, NULL
);
2413 _mesa_error(ctx
, GL_INVALID_VALUE
,
2414 "%s(offset %ld < 0)", func
, (long) offset
);
2419 _mesa_error(ctx
, GL_INVALID_VALUE
,
2420 "%s(length %ld < 0)", func
, (long) length
);
2424 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2426 * "An INVALID_OPERATION error is generated for any of the following
2429 * * <length> is zero."
2431 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2432 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2436 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2440 allowed_access
= GL_MAP_READ_BIT
|
2442 GL_MAP_INVALIDATE_RANGE_BIT
|
2443 GL_MAP_INVALIDATE_BUFFER_BIT
|
2444 GL_MAP_FLUSH_EXPLICIT_BIT
|
2445 GL_MAP_UNSYNCHRONIZED_BIT
;
2447 if (ctx
->Extensions
.ARB_buffer_storage
) {
2448 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2449 GL_MAP_COHERENT_BIT
;
2452 if (access
& ~allowed_access
) {
2453 /* generate an error if any bits other than those allowed are set */
2454 _mesa_error(ctx
, GL_INVALID_VALUE
,
2455 "%s(access has undefined bits set)", func
);
2459 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2460 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2461 "%s(access indicates neither read or write)", func
);
2465 if ((access
& GL_MAP_READ_BIT
) &&
2466 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2467 GL_MAP_INVALIDATE_BUFFER_BIT
|
2468 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2469 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2470 "%s(read access with disallowed bits)", func
);
2474 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2475 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2476 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2477 "%s(access has flush explicit without write)", func
);
2481 if (access
& GL_MAP_READ_BIT
&&
2482 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2483 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2484 "%s(buffer does not allow read access)", func
);
2488 if (access
& GL_MAP_WRITE_BIT
&&
2489 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2490 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2491 "%s(buffer does not allow write access)", func
);
2495 if (access
& GL_MAP_COHERENT_BIT
&&
2496 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2497 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2498 "%s(buffer does not allow coherent access)", func
);
2502 if (access
& GL_MAP_PERSISTENT_BIT
&&
2503 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2504 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2505 "%s(buffer does not allow persistent access)", func
);
2509 if (offset
+ length
> bufObj
->Size
) {
2510 _mesa_error(ctx
, GL_INVALID_VALUE
,
2511 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2512 (unsigned long) offset
, (unsigned long) length
,
2513 (unsigned long) bufObj
->Size
);
2517 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2518 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2519 "%s(buffer already mapped)", func
);
2523 if (!bufObj
->Size
) {
2524 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2528 if (access
& GL_MAP_WRITE_BIT
) {
2529 bufObj
->NumMapBufferWriteCalls
++;
2530 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2531 bufObj
->Usage
== GL_STATIC_COPY
) &&
2532 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2533 BUFFER_USAGE_WARNING(ctx
,
2534 "using %s(buffer %u, offset %u, length %u) to "
2535 "update a %s buffer",
2536 func
, bufObj
->Name
, offset
, length
,
2537 _mesa_enum_to_string(bufObj
->Usage
));
2541 assert(ctx
->Driver
.MapBufferRange
);
2542 map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2545 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2548 /* The driver callback should have set all these fields.
2549 * This is important because other modules (like VBO) might call
2550 * the driver function directly.
2552 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2553 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2554 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2555 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2558 if (access
& GL_MAP_WRITE_BIT
) {
2559 bufObj
->Written
= GL_TRUE
;
2560 bufObj
->MinMaxCacheDirty
= true;
2564 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2565 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2566 bufObj
->Name
, bufObj
->Size
, access
);
2567 /* Access must be write only */
2568 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2570 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2571 for (i
= 0; i
< bufObj
->Size
; i
++)
2578 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2579 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2581 /* buffer is 100 bytes larger than requested, fill with magic value */
2582 for (i
= 0; i
< 100; i
++) {
2583 buf
[bufObj
->Size
- i
- 1] = 123;
2592 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2595 GET_CURRENT_CONTEXT(ctx
);
2596 struct gl_buffer_object
*bufObj
;
2598 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2599 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2600 "glMapBufferRange(ARB_map_buffer_range not supported)");
2604 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2608 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2609 "glMapBufferRange");
2613 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
2616 GET_CURRENT_CONTEXT(ctx
);
2617 struct gl_buffer_object
*bufObj
;
2619 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2620 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2621 "glMapNamedBufferRange("
2622 "ARB_map_buffer_range not supported)");
2626 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
2630 return _mesa_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2631 "glMapNamedBufferRange");
2635 * Converts GLenum access from MapBuffer and MapNamedBuffer into
2636 * flags for input to _mesa_map_buffer_range.
2638 * \return true if the type of requested access is permissible.
2641 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
2645 case GL_READ_ONLY_ARB
:
2646 *flags
= GL_MAP_READ_BIT
;
2647 return _mesa_is_desktop_gl(ctx
);
2648 case GL_WRITE_ONLY_ARB
:
2649 *flags
= GL_MAP_WRITE_BIT
;
2651 case GL_READ_WRITE_ARB
:
2652 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
2653 return _mesa_is_desktop_gl(ctx
);
2660 _mesa_MapBuffer(GLenum target
, GLenum access
)
2662 GET_CURRENT_CONTEXT(ctx
);
2663 struct gl_buffer_object
*bufObj
;
2664 GLbitfield accessFlags
;
2666 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2667 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
2671 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
2675 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2680 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
2682 GET_CURRENT_CONTEXT(ctx
);
2683 struct gl_buffer_object
*bufObj
;
2684 GLbitfield accessFlags
;
2686 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
2687 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
2691 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
2695 return _mesa_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
2696 "glMapNamedBuffer");
2701 _mesa_flush_mapped_buffer_range(struct gl_context
*ctx
,
2702 struct gl_buffer_object
*bufObj
,
2703 GLintptr offset
, GLsizeiptr length
,
2706 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2707 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2708 "%s(ARB_map_buffer_range not supported)", func
);
2713 _mesa_error(ctx
, GL_INVALID_VALUE
,
2714 "%s(offset %ld < 0)", func
, (long) offset
);
2719 _mesa_error(ctx
, GL_INVALID_VALUE
,
2720 "%s(length %ld < 0)", func
, (long) length
);
2724 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2725 /* buffer is not mapped */
2726 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2727 "%s(buffer is not mapped)", func
);
2731 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
2732 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
2733 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2734 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
2738 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
2739 _mesa_error(ctx
, GL_INVALID_VALUE
,
2740 "%s(offset %ld + length %ld > mapped length %ld)", func
,
2741 (long) offset
, (long) length
,
2742 (long) bufObj
->Mappings
[MAP_USER
].Length
);
2746 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
2748 if (ctx
->Driver
.FlushMappedBufferRange
)
2749 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
2754 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
2757 GET_CURRENT_CONTEXT(ctx
);
2758 struct gl_buffer_object
*bufObj
;
2760 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
2761 GL_INVALID_OPERATION
);
2765 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2766 "glFlushMappedBufferRange");
2770 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
2773 GET_CURRENT_CONTEXT(ctx
);
2774 struct gl_buffer_object
*bufObj
;
2776 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2777 "glFlushMappedNamedBufferRange");
2781 _mesa_flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
2782 "glFlushMappedNamedBufferRange");
2787 * Binds a buffer object to a uniform buffer binding point.
2789 * The caller is responsible for flushing vertices and updating
2793 set_ubo_binding(struct gl_context
*ctx
,
2794 struct gl_uniform_buffer_binding
*binding
,
2795 struct gl_buffer_object
*bufObj
,
2800 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2802 binding
->Offset
= offset
;
2803 binding
->Size
= size
;
2804 binding
->AutomaticSize
= autoSize
;
2806 /* If this is a real buffer object, mark it has having been used
2807 * at some point as a UBO.
2810 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
2814 * Binds a buffer object to a shader storage buffer binding point.
2816 * The caller is responsible for flushing vertices and updating
2820 set_ssbo_binding(struct gl_context
*ctx
,
2821 struct gl_shader_storage_buffer_binding
*binding
,
2822 struct gl_buffer_object
*bufObj
,
2827 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
2829 binding
->Offset
= offset
;
2830 binding
->Size
= size
;
2831 binding
->AutomaticSize
= autoSize
;
2833 /* If this is a real buffer object, mark it has having been used
2834 * at some point as a SSBO.
2837 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
2841 * Binds a buffer object to a uniform buffer binding point.
2843 * Unlike set_ubo_binding(), this function also flushes vertices
2844 * and updates NewDriverState. It also checks if the binding
2845 * has actually changed before updating it.
2848 bind_uniform_buffer(struct gl_context
*ctx
,
2850 struct gl_buffer_object
*bufObj
,
2855 struct gl_uniform_buffer_binding
*binding
=
2856 &ctx
->UniformBufferBindings
[index
];
2858 if (binding
->BufferObject
== bufObj
&&
2859 binding
->Offset
== offset
&&
2860 binding
->Size
== size
&&
2861 binding
->AutomaticSize
== autoSize
) {
2865 FLUSH_VERTICES(ctx
, 0);
2866 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
2868 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2872 * Binds a buffer object to a shader storage buffer binding point.
2874 * Unlike set_ssbo_binding(), this function also flushes vertices
2875 * and updates NewDriverState. It also checks if the binding
2876 * has actually changed before updating it.
2879 bind_shader_storage_buffer(struct gl_context
*ctx
,
2881 struct gl_buffer_object
*bufObj
,
2886 struct gl_shader_storage_buffer_binding
*binding
=
2887 &ctx
->ShaderStorageBufferBindings
[index
];
2889 if (binding
->BufferObject
== bufObj
&&
2890 binding
->Offset
== offset
&&
2891 binding
->Size
== size
&&
2892 binding
->AutomaticSize
== autoSize
) {
2896 FLUSH_VERTICES(ctx
, 0);
2897 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
2899 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
2903 * Bind a region of a buffer object to a uniform block binding point.
2904 * \param index the uniform buffer binding point index
2905 * \param bufObj the buffer object
2906 * \param offset offset to the start of buffer object region
2907 * \param size size of the buffer object region
2910 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
,
2912 struct gl_buffer_object
*bufObj
,
2916 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2917 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2921 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
2922 _mesa_error(ctx
, GL_INVALID_VALUE
,
2923 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2924 ctx
->Const
.UniformBufferOffsetAlignment
);
2928 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2933 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2934 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2938 * Bind a region of a buffer object to a shader storage block binding point.
2939 * \param index the shader storage buffer binding point index
2940 * \param bufObj the buffer object
2941 * \param offset offset to the start of buffer object region
2942 * \param size size of the buffer object region
2945 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
2947 struct gl_buffer_object
*bufObj
,
2951 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
2952 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
2956 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
2957 _mesa_error(ctx
, GL_INVALID_VALUE
,
2958 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
2959 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
2963 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
2968 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
2969 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
2973 * Bind a buffer object to a uniform block binding point.
2974 * As above, but offset = 0.
2977 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
2979 struct gl_buffer_object
*bufObj
)
2981 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
2982 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
2986 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
2988 if (bufObj
== ctx
->Shared
->NullBufferObj
)
2989 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
2991 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
2995 * Bind a buffer object to a shader storage block binding point.
2996 * As above, but offset = 0.
2999 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
3001 struct gl_buffer_object
*bufObj
)
3003 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3004 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
3008 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3010 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3011 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
3013 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
3017 * Binds a buffer object to an atomic buffer binding point.
3019 * The caller is responsible for validating the offset,
3020 * flushing the vertices and updating NewDriverState.
3023 set_atomic_buffer_binding(struct gl_context
*ctx
,
3024 struct gl_atomic_buffer_binding
*binding
,
3025 struct gl_buffer_object
*bufObj
,
3029 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
3031 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3032 binding
->Offset
= 0;
3035 binding
->Offset
= offset
;
3036 binding
->Size
= size
;
3037 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
3042 * Binds a buffer object to an atomic buffer binding point.
3044 * Unlike set_atomic_buffer_binding(), this function also validates the
3045 * index and offset, flushes vertices, and updates NewDriverState.
3046 * It also checks if the binding has actually changing before
3050 bind_atomic_buffer(struct gl_context
*ctx
,
3052 struct gl_buffer_object
*bufObj
,
3057 struct gl_atomic_buffer_binding
*binding
;
3059 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3060 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3064 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3065 _mesa_error(ctx
, GL_INVALID_VALUE
,
3066 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3067 ATOMIC_COUNTER_SIZE
);
3071 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
3073 binding
= &ctx
->AtomicBufferBindings
[index
];
3074 if (binding
->BufferObject
== bufObj
&&
3075 binding
->Offset
== offset
&&
3076 binding
->Size
== size
) {
3080 FLUSH_VERTICES(ctx
, 0);
3081 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3083 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3087 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3089 const GLintptr
*offsets
,
3090 const GLsizeiptr
*sizes
)
3092 if (offsets
[index
] < 0) {
3093 /* The ARB_multi_bind spec says:
3095 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3096 * value in <offsets> is less than zero (per binding)."
3098 _mesa_error(ctx
, GL_INVALID_VALUE
,
3099 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3100 index
, (int64_t) offsets
[index
]);
3104 if (sizes
[index
] <= 0) {
3105 /* The ARB_multi_bind spec says:
3107 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3108 * value in <sizes> is less than or equal to zero (per binding)."
3110 _mesa_error(ctx
, GL_INVALID_VALUE
,
3111 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3112 index
, (int64_t) sizes
[index
]);
3120 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3121 GLuint first
, GLsizei count
,
3124 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3125 _mesa_error(ctx
, GL_INVALID_ENUM
,
3126 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3130 /* The ARB_multi_bind_spec says:
3132 * "An INVALID_OPERATION error is generated if <first> + <count> is
3133 * greater than the number of target-specific indexed binding points,
3134 * as described in section 6.7.1."
3136 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3137 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3138 "%s(first=%u + count=%d > the value of "
3139 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3140 caller
, first
, count
,
3141 ctx
->Const
.MaxUniformBufferBindings
);
3149 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3150 GLuint first
, GLsizei count
,
3153 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3154 _mesa_error(ctx
, GL_INVALID_ENUM
,
3155 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3159 /* The ARB_multi_bind_spec says:
3161 * "An INVALID_OPERATION error is generated if <first> + <count> is
3162 * greater than the number of target-specific indexed binding points,
3163 * as described in section 6.7.1."
3165 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3166 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3167 "%s(first=%u + count=%d > the value of "
3168 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3169 caller
, first
, count
,
3170 ctx
->Const
.MaxShaderStorageBufferBindings
);
3178 * Unbind all uniform buffers in the range
3179 * <first> through <first>+<count>-1
3182 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3184 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3187 for (i
= 0; i
< count
; i
++)
3188 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3189 bufObj
, -1, -1, GL_TRUE
);
3193 * Unbind all shader storage buffers in the range
3194 * <first> through <first>+<count>-1
3197 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3200 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3203 for (i
= 0; i
< count
; i
++)
3204 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3205 bufObj
, -1, -1, GL_TRUE
);
3209 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3210 const GLuint
*buffers
,
3212 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3217 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3220 /* Assume that at least one binding will be changed */
3221 FLUSH_VERTICES(ctx
, 0);
3222 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3225 /* The ARB_multi_bind spec says:
3227 * "If <buffers> is NULL, all bindings from <first> through
3228 * <first>+<count>-1 are reset to their unbound (zero) state.
3229 * In this case, the offsets and sizes associated with the
3230 * binding points are set to default values, ignoring
3231 * <offsets> and <sizes>."
3233 unbind_uniform_buffers(ctx
, first
, count
);
3237 /* Note that the error semantics for multi-bind commands differ from
3238 * those of other GL commands.
3240 * The Issues section in the ARB_multi_bind spec says:
3242 * "(11) Typically, OpenGL specifies that if an error is generated by a
3243 * command, that command has no effect. This is somewhat
3244 * unfortunate for multi-bind commands, because it would require a
3245 * first pass to scan the entire list of bound objects for errors
3246 * and then a second pass to actually perform the bindings.
3247 * Should we have different error semantics?
3249 * RESOLVED: Yes. In this specification, when the parameters for
3250 * one of the <count> binding points are invalid, that binding point
3251 * is not updated and an error will be generated. However, other
3252 * binding points in the same command will be updated if their
3253 * parameters are valid and no other error occurs."
3256 _mesa_begin_bufferobj_lookups(ctx
);
3258 for (i
= 0; i
< count
; i
++) {
3259 struct gl_uniform_buffer_binding
*binding
=
3260 &ctx
->UniformBufferBindings
[first
+ i
];
3261 struct gl_buffer_object
*bufObj
;
3262 GLintptr offset
= 0;
3263 GLsizeiptr size
= 0;
3266 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3269 /* The ARB_multi_bind spec says:
3271 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3272 * pair of values in <offsets> and <sizes> does not respectively
3273 * satisfy the constraints described for those parameters for the
3274 * specified target, as described in section 6.7.1 (per binding)."
3276 * Section 6.7.1 refers to table 6.5, which says:
3278 * "┌───────────────────────────────────────────────────────────────┐
3279 * │ Uniform buffer array bindings (see sec. 7.6) │
3280 * ├─────────────────────┬─────────────────────────────────────────┤
3282 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3283 * │ │ OFFSET_ALIGNMENT │
3285 * │ size restriction │ none │
3286 * └─────────────────────┴─────────────────────────────────────────┘"
3288 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3289 _mesa_error(ctx
, GL_INVALID_VALUE
,
3290 "glBindBuffersRange(offsets[%u]=%" PRId64
3291 " is misaligned; it must be a multiple of the value of "
3292 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3293 "target=GL_UNIFORM_BUFFER)",
3294 i
, (int64_t) offsets
[i
],
3295 ctx
->Const
.UniformBufferOffsetAlignment
);
3299 offset
= offsets
[i
];
3303 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3304 bufObj
= binding
->BufferObject
;
3306 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3309 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3310 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3312 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3316 _mesa_end_bufferobj_lookups(ctx
);
3320 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3321 GLsizei count
, const GLuint
*buffers
,
3323 const GLintptr
*offsets
,
3324 const GLsizeiptr
*sizes
,
3329 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3332 /* Assume that at least one binding will be changed */
3333 FLUSH_VERTICES(ctx
, 0);
3334 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3337 /* The ARB_multi_bind spec says:
3339 * "If <buffers> is NULL, all bindings from <first> through
3340 * <first>+<count>-1 are reset to their unbound (zero) state.
3341 * In this case, the offsets and sizes associated with the
3342 * binding points are set to default values, ignoring
3343 * <offsets> and <sizes>."
3345 unbind_shader_storage_buffers(ctx
, first
, count
);
3349 /* Note that the error semantics for multi-bind commands differ from
3350 * those of other GL commands.
3352 * The Issues section in the ARB_multi_bind spec says:
3354 * "(11) Typically, OpenGL specifies that if an error is generated by a
3355 * command, that command has no effect. This is somewhat
3356 * unfortunate for multi-bind commands, because it would require a
3357 * first pass to scan the entire list of bound objects for errors
3358 * and then a second pass to actually perform the bindings.
3359 * Should we have different error semantics?
3361 * RESOLVED: Yes. In this specification, when the parameters for
3362 * one of the <count> binding points are invalid, that binding point
3363 * is not updated and an error will be generated. However, other
3364 * binding points in the same command will be updated if their
3365 * parameters are valid and no other error occurs."
3368 _mesa_begin_bufferobj_lookups(ctx
);
3370 for (i
= 0; i
< count
; i
++) {
3371 struct gl_shader_storage_buffer_binding
*binding
=
3372 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3373 struct gl_buffer_object
*bufObj
;
3374 GLintptr offset
= 0;
3375 GLsizeiptr size
= 0;
3378 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3381 /* The ARB_multi_bind spec says:
3383 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3384 * pair of values in <offsets> and <sizes> does not respectively
3385 * satisfy the constraints described for those parameters for the
3386 * specified target, as described in section 6.7.1 (per binding)."
3388 * Section 6.7.1 refers to table 6.5, which says:
3390 * "┌───────────────────────────────────────────────────────────────┐
3391 * │ Shader storage buffer array bindings (see sec. 7.8) │
3392 * ├─────────────────────┬─────────────────────────────────────────┤
3394 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3395 * │ │ BUFFER_OFFSET_ALIGNMENT │
3397 * │ size restriction │ none │
3398 * └─────────────────────┴─────────────────────────────────────────┘"
3400 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3401 _mesa_error(ctx
, GL_INVALID_VALUE
,
3402 "glBindBuffersRange(offsets[%u]=%" PRId64
3403 " is misaligned; it must be a multiple of the value of "
3404 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3405 "target=GL_SHADER_STORAGE_BUFFER)",
3406 i
, (int64_t) offsets
[i
],
3407 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3411 offset
= offsets
[i
];
3415 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3416 bufObj
= binding
->BufferObject
;
3418 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3421 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3422 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3424 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3428 _mesa_end_bufferobj_lookups(ctx
);
3432 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3433 struct gl_transform_feedback_object
*tfObj
,
3434 GLuint first
, GLsizei count
, const char *caller
)
3436 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3437 _mesa_error(ctx
, GL_INVALID_ENUM
,
3438 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3442 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3444 * "An INVALID_OPERATION error is generated :
3447 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3448 * FEEDBACK_BUFFER and transform feedback is currently active."
3450 * We assume that this is also meant to apply to BindBuffersRange
3451 * and BindBuffersBase.
3453 if (tfObj
->Active
) {
3454 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3455 "%s(Changing transform feedback buffers while "
3456 "transform feedback is active)", caller
);
3460 /* The ARB_multi_bind_spec says:
3462 * "An INVALID_OPERATION error is generated if <first> + <count> is
3463 * greater than the number of target-specific indexed binding points,
3464 * as described in section 6.7.1."
3466 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3467 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3468 "%s(first=%u + count=%d > the value of "
3469 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3470 caller
, first
, count
,
3471 ctx
->Const
.MaxTransformFeedbackBuffers
);
3479 * Unbind all transform feedback buffers in the range
3480 * <first> through <first>+<count>-1
3483 unbind_xfb_buffers(struct gl_context
*ctx
,
3484 struct gl_transform_feedback_object
*tfObj
,
3485 GLuint first
, GLsizei count
)
3487 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3490 for (i
= 0; i
< count
; i
++)
3491 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3496 bind_xfb_buffers(struct gl_context
*ctx
,
3497 GLuint first
, GLsizei count
,
3498 const GLuint
*buffers
,
3500 const GLintptr
*offsets
,
3501 const GLsizeiptr
*sizes
,
3504 struct gl_transform_feedback_object
*tfObj
=
3505 ctx
->TransformFeedback
.CurrentObject
;
3508 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3511 /* Assume that at least one binding will be changed */
3512 FLUSH_VERTICES(ctx
, 0);
3513 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3516 /* The ARB_multi_bind spec says:
3518 * "If <buffers> is NULL, all bindings from <first> through
3519 * <first>+<count>-1 are reset to their unbound (zero) state.
3520 * In this case, the offsets and sizes associated with the
3521 * binding points are set to default values, ignoring
3522 * <offsets> and <sizes>."
3524 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3528 /* Note that the error semantics for multi-bind commands differ from
3529 * those of other GL commands.
3531 * The Issues section in the ARB_multi_bind spec says:
3533 * "(11) Typically, OpenGL specifies that if an error is generated by a
3534 * command, that command has no effect. This is somewhat
3535 * unfortunate for multi-bind commands, because it would require a
3536 * first pass to scan the entire list of bound objects for errors
3537 * and then a second pass to actually perform the bindings.
3538 * Should we have different error semantics?
3540 * RESOLVED: Yes. In this specification, when the parameters for
3541 * one of the <count> binding points are invalid, that binding point
3542 * is not updated and an error will be generated. However, other
3543 * binding points in the same command will be updated if their
3544 * parameters are valid and no other error occurs."
3547 _mesa_begin_bufferobj_lookups(ctx
);
3549 for (i
= 0; i
< count
; i
++) {
3550 const GLuint index
= first
+ i
;
3551 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3552 struct gl_buffer_object
*bufObj
;
3553 GLintptr offset
= 0;
3554 GLsizeiptr size
= 0;
3557 offset
= offsets
[i
];
3560 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3563 /* The ARB_multi_bind spec says:
3565 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3566 * pair of values in <offsets> and <sizes> does not respectively
3567 * satisfy the constraints described for those parameters for the
3568 * specified target, as described in section 6.7.1 (per binding)."
3570 * Section 6.7.1 refers to table 6.5, which says:
3572 * "┌───────────────────────────────────────────────────────────────┐
3573 * │ Transform feedback array bindings (see sec. 13.2.2) │
3574 * ├───────────────────────┬───────────────────────────────────────┤
3576 * │ offset restriction │ multiple of 4 │
3578 * │ size restriction │ multiple of 4 │
3579 * └───────────────────────┴───────────────────────────────────────┘"
3581 if (offsets
[i
] & 0x3) {
3582 _mesa_error(ctx
, GL_INVALID_VALUE
,
3583 "glBindBuffersRange(offsets[%u]=%" PRId64
3584 " is misaligned; it must be a multiple of 4 when "
3585 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3586 i
, (int64_t) offsets
[i
]);
3590 if (sizes
[i
] & 0x3) {
3591 _mesa_error(ctx
, GL_INVALID_VALUE
,
3592 "glBindBuffersRange(sizes[%u]=%" PRId64
3593 " is misaligned; it must be a multiple of 4 when "
3594 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3595 i
, (int64_t) sizes
[i
]);
3599 offset
= offsets
[i
];
3603 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3604 bufObj
= boundBufObj
;
3606 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3609 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3613 _mesa_end_bufferobj_lookups(ctx
);
3617 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3618 GLuint first
, GLsizei count
,
3621 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3622 _mesa_error(ctx
, GL_INVALID_ENUM
,
3623 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3627 /* The ARB_multi_bind_spec says:
3629 * "An INVALID_OPERATION error is generated if <first> + <count> is
3630 * greater than the number of target-specific indexed binding points,
3631 * as described in section 6.7.1."
3633 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3634 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3635 "%s(first=%u + count=%d > the value of "
3636 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3637 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3645 * Unbind all atomic counter buffers in the range
3646 * <first> through <first>+<count>-1
3649 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3651 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3654 for (i
= 0; i
< count
; i
++)
3655 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3660 bind_atomic_buffers(struct gl_context
*ctx
,
3663 const GLuint
*buffers
,
3665 const GLintptr
*offsets
,
3666 const GLsizeiptr
*sizes
,
3671 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3674 /* Assume that at least one binding will be changed */
3675 FLUSH_VERTICES(ctx
, 0);
3676 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3679 /* The ARB_multi_bind spec says:
3681 * "If <buffers> is NULL, all bindings from <first> through
3682 * <first>+<count>-1 are reset to their unbound (zero) state.
3683 * In this case, the offsets and sizes associated with the
3684 * binding points are set to default values, ignoring
3685 * <offsets> and <sizes>."
3687 unbind_atomic_buffers(ctx
, first
, count
);
3691 /* Note that the error semantics for multi-bind commands differ from
3692 * those of other GL commands.
3694 * The Issues section in the ARB_multi_bind spec says:
3696 * "(11) Typically, OpenGL specifies that if an error is generated by a
3697 * command, that command has no effect. This is somewhat
3698 * unfortunate for multi-bind commands, because it would require a
3699 * first pass to scan the entire list of bound objects for errors
3700 * and then a second pass to actually perform the bindings.
3701 * Should we have different error semantics?
3703 * RESOLVED: Yes. In this specification, when the parameters for
3704 * one of the <count> binding points are invalid, that binding point
3705 * is not updated and an error will be generated. However, other
3706 * binding points in the same command will be updated if their
3707 * parameters are valid and no other error occurs."
3710 _mesa_begin_bufferobj_lookups(ctx
);
3712 for (i
= 0; i
< count
; i
++) {
3713 struct gl_atomic_buffer_binding
*binding
=
3714 &ctx
->AtomicBufferBindings
[first
+ i
];
3715 struct gl_buffer_object
*bufObj
;
3716 GLintptr offset
= 0;
3717 GLsizeiptr size
= 0;
3720 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3723 /* The ARB_multi_bind spec says:
3725 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3726 * pair of values in <offsets> and <sizes> does not respectively
3727 * satisfy the constraints described for those parameters for the
3728 * specified target, as described in section 6.7.1 (per binding)."
3730 * Section 6.7.1 refers to table 6.5, which says:
3732 * "┌───────────────────────────────────────────────────────────────┐
3733 * │ Atomic counter array bindings (see sec. 7.7.2) │
3734 * ├───────────────────────┬───────────────────────────────────────┤
3736 * │ offset restriction │ multiple of 4 │
3738 * │ size restriction │ none │
3739 * └───────────────────────┴───────────────────────────────────────┘"
3741 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
3742 _mesa_error(ctx
, GL_INVALID_VALUE
,
3743 "glBindBuffersRange(offsets[%u]=%" PRId64
3744 " is misaligned; it must be a multiple of %d when "
3745 "target=GL_ATOMIC_COUNTER_BUFFER)",
3746 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
3750 offset
= offsets
[i
];
3754 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3755 bufObj
= binding
->BufferObject
;
3757 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3760 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
3763 _mesa_end_bufferobj_lookups(ctx
);
3767 _mesa_BindBufferRange(GLenum target
, GLuint index
,
3768 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
3770 GET_CURRENT_CONTEXT(ctx
);
3771 struct gl_buffer_object
*bufObj
;
3773 if (MESA_VERBOSE
& VERBOSE_API
) {
3774 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
3775 _mesa_enum_to_string(target
), index
, buffer
,
3776 (unsigned long) offset
, (unsigned long) size
);
3780 bufObj
= ctx
->Shared
->NullBufferObj
;
3782 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3784 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3785 &bufObj
, "glBindBufferRange"))
3789 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3790 "glBindBufferRange(invalid buffer=%u)", buffer
);
3796 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
3803 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3804 _mesa_bind_buffer_range_transform_feedback(ctx
,
3805 ctx
->TransformFeedback
.CurrentObject
,
3806 index
, bufObj
, offset
, size
,
3809 case GL_UNIFORM_BUFFER
:
3810 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3812 case GL_SHADER_STORAGE_BUFFER
:
3813 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3815 case GL_ATOMIC_COUNTER_BUFFER
:
3816 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
,
3817 "glBindBufferRange");
3820 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
3826 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
3828 GET_CURRENT_CONTEXT(ctx
);
3829 struct gl_buffer_object
*bufObj
;
3831 if (MESA_VERBOSE
& VERBOSE_API
) {
3832 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
3833 _mesa_enum_to_string(target
), index
, buffer
);
3837 bufObj
= ctx
->Shared
->NullBufferObj
;
3839 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3841 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
3842 &bufObj
, "glBindBufferBase"))
3846 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3847 "glBindBufferBase(invalid buffer=%u)", buffer
);
3851 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
3852 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
3854 * "BindBufferBase is equivalent to calling BindBufferRange with offset
3855 * zero and size equal to the size of buffer."
3857 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
3859 * "If the parameter (starting offset or size) was not specified when the
3860 * buffer object was bound, zero is returned."
3862 * What happens if the size of the buffer changes? Does the size of the
3863 * buffer at the moment glBindBufferBase was called still play a role, like
3864 * the first quote would imply, or is the size meaningless in the
3865 * glBindBufferBase case like the second quote would suggest? The GL 4.1
3866 * core spec page 45 says:
3868 * "It is equivalent to calling BindBufferRange with offset zero, while
3869 * size is determined by the size of the bound buffer at the time the
3872 * My interpretation is that the GL 4.1 spec was a clarification of the
3873 * behavior, not a change. In particular, this choice will only make
3874 * rendering work in cases where it would have had undefined results.
3878 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3879 _mesa_bind_buffer_base_transform_feedback(ctx
,
3880 ctx
->TransformFeedback
.CurrentObject
,
3881 index
, bufObj
, false);
3883 case GL_UNIFORM_BUFFER
:
3884 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
3886 case GL_SHADER_STORAGE_BUFFER
:
3887 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
3889 case GL_ATOMIC_COUNTER_BUFFER
:
3890 bind_atomic_buffer(ctx
, index
, bufObj
, 0, 0,
3891 "glBindBufferBase");
3894 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
3900 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
3901 const GLuint
*buffers
,
3902 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
3904 GET_CURRENT_CONTEXT(ctx
);
3906 if (MESA_VERBOSE
& VERBOSE_API
) {
3907 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
3908 _mesa_enum_to_string(target
), first
, count
,
3909 buffers
, offsets
, sizes
);
3913 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3914 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3915 "glBindBuffersRange");
3917 case GL_UNIFORM_BUFFER
:
3918 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3919 "glBindBuffersRange");
3921 case GL_SHADER_STORAGE_BUFFER
:
3922 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3923 "glBindBuffersRange");
3925 case GL_ATOMIC_COUNTER_BUFFER
:
3926 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
3927 "glBindBuffersRange");
3930 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
3931 _mesa_enum_to_string(target
));
3937 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
3938 const GLuint
*buffers
)
3940 GET_CURRENT_CONTEXT(ctx
);
3942 if (MESA_VERBOSE
& VERBOSE_API
) {
3943 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
3944 _mesa_enum_to_string(target
), first
, count
, buffers
);
3948 case GL_TRANSFORM_FEEDBACK_BUFFER
:
3949 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3950 "glBindBuffersBase");
3952 case GL_UNIFORM_BUFFER
:
3953 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3954 "glBindBuffersBase");
3956 case GL_SHADER_STORAGE_BUFFER
:
3957 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3958 "glBindBuffersBase");
3960 case GL_ATOMIC_COUNTER_BUFFER
:
3961 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
3962 "glBindBuffersBase");
3965 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
3966 _mesa_enum_to_string(target
));
3972 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
3975 GET_CURRENT_CONTEXT(ctx
);
3976 struct gl_buffer_object
*bufObj
;
3977 const GLintptr end
= offset
+ length
;
3979 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
3980 * Profile) spec says:
3982 * "An INVALID_VALUE error is generated if buffer is zero or is not the
3983 * name of an existing buffer object."
3985 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3986 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
3987 _mesa_error(ctx
, GL_INVALID_VALUE
,
3988 "glInvalidateBufferSubData(name = %u) invalid object",
3993 /* The GL_ARB_invalidate_subdata spec says:
3995 * "An INVALID_VALUE error is generated if <offset> or <length> is
3996 * negative, or if <offset> + <length> is greater than the value of
3999 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4000 _mesa_error(ctx
, GL_INVALID_VALUE
,
4001 "glInvalidateBufferSubData(invalid offset or length)");
4005 /* The OpenGL 4.4 (Core Profile) spec says:
4007 * "An INVALID_OPERATION error is generated if buffer is currently
4008 * mapped by MapBuffer or if the invalidate range intersects the range
4009 * currently mapped by MapBufferRange, unless it was mapped
4010 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4012 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4013 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4014 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4015 "glInvalidateBufferSubData(intersection with mapped "
4020 if (ctx
->Driver
.InvalidateBufferSubData
)
4021 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4025 _mesa_InvalidateBufferData(GLuint buffer
)
4027 GET_CURRENT_CONTEXT(ctx
);
4028 struct gl_buffer_object
*bufObj
;
4030 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4031 * Profile) spec says:
4033 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4034 * name of an existing buffer object."
4036 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4037 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4038 _mesa_error(ctx
, GL_INVALID_VALUE
,
4039 "glInvalidateBufferData(name = %u) invalid object",
4044 /* The OpenGL 4.4 (Core Profile) spec says:
4046 * "An INVALID_OPERATION error is generated if buffer is currently
4047 * mapped by MapBuffer or if the invalidate range intersects the range
4048 * currently mapped by MapBufferRange, unless it was mapped
4049 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4051 if (_mesa_check_disallowed_mapping(bufObj
)) {
4052 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4053 "glInvalidateBufferData(intersection with mapped "
4058 if (ctx
->Driver
.InvalidateBufferSubData
)
4059 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, 0, bufObj
->Size
);
4063 buffer_page_commitment(struct gl_context
*ctx
,
4064 struct gl_buffer_object
*bufferObj
,
4065 GLintptr offset
, GLsizeiptr size
,
4066 GLboolean commit
, const char *func
)
4068 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4069 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4074 if (size
< 0 || size
> bufferObj
->Size
||
4075 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4076 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4081 /* The GL_ARB_sparse_buffer extension specification says:
4083 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4084 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4085 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4086 * not extend to the end of the buffer's data store."
4088 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4089 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4094 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4095 offset
+ size
!= bufferObj
->Size
) {
4096 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4101 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4105 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4108 GET_CURRENT_CONTEXT(ctx
);
4109 struct gl_buffer_object
*bufferObj
;
4111 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4116 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4117 "glBufferPageCommitmentARB");
4121 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4122 GLsizeiptr size
, GLboolean commit
)
4124 GET_CURRENT_CONTEXT(ctx
);
4125 struct gl_buffer_object
*bufferObj
;
4127 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4128 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4129 /* Note: the extension spec is not clear about the excpected error value. */
4130 _mesa_error(ctx
, GL_INVALID_VALUE
,
4131 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4136 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4137 "glNamedBufferPageCommitmentARB");