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
= MALLOC_STRUCT(gl_buffer_object
);
450 _mesa_initialize_buffer_object(ctx
, obj
, name
);
456 * Delete a buffer object.
458 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
461 _mesa_delete_buffer_object(struct gl_context
*ctx
,
462 struct gl_buffer_object
*bufObj
)
466 vbo_delete_minmax_cache(bufObj
);
467 _mesa_align_free(bufObj
->Data
);
469 /* assign strange values here to help w/ debugging */
470 bufObj
->RefCount
= -1000;
473 mtx_destroy(&bufObj
->Mutex
);
481 * Set ptr to bufObj w/ reference counting.
482 * This is normally only called from the _mesa_reference_buffer_object() macro
483 * when there's a real pointer change.
486 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
487 struct gl_buffer_object
**ptr
,
488 struct gl_buffer_object
*bufObj
)
491 /* Unreference the old buffer */
492 GLboolean deleteFlag
= GL_FALSE
;
493 struct gl_buffer_object
*oldObj
= *ptr
;
495 mtx_lock(&oldObj
->Mutex
);
496 assert(oldObj
->RefCount
> 0);
498 deleteFlag
= (oldObj
->RefCount
== 0);
499 mtx_unlock(&oldObj
->Mutex
);
502 assert(ctx
->Driver
.DeleteBuffer
);
503 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
511 /* reference new buffer */
512 mtx_lock(&bufObj
->Mutex
);
513 assert(bufObj
->RefCount
> 0);
517 mtx_unlock(&bufObj
->Mutex
);
523 * Get the value of MESA_NO_MINMAX_CACHE.
526 get_no_minmax_cache()
528 static bool read
= false;
529 static bool disable
= false;
532 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
541 * Initialize a buffer object to default values.
544 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
545 struct gl_buffer_object
*obj
,
548 memset(obj
, 0, sizeof(struct gl_buffer_object
));
549 mtx_init(&obj
->Mutex
, mtx_plain
);
552 obj
->Usage
= GL_STATIC_DRAW_ARB
;
554 if (get_no_minmax_cache())
555 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
561 * Callback called from _mesa_HashWalk()
564 count_buffer_size(GLuint key
, void *data
, void *userData
)
566 const struct gl_buffer_object
*bufObj
=
567 (const struct gl_buffer_object
*) data
;
568 GLuint
*total
= (GLuint
*) userData
;
571 *total
= *total
+ bufObj
->Size
;
576 * Compute total size (in bytes) of all buffer objects for the given context.
577 * For debugging purposes.
580 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
584 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
591 * Allocate space for and store data in a buffer object. Any data that was
592 * previously stored in the buffer object is lost. If \c data is \c NULL,
593 * memory will be allocated, but no copy will occur.
595 * This is the default callback for \c dd_function_table::BufferData()
596 * Note that all GL error checking will have been done already.
598 * \param ctx GL context.
599 * \param target Buffer object target on which to operate.
600 * \param size Size, in bytes, of the new data store.
601 * \param data Pointer to the data to store in the buffer object. This
602 * pointer may be \c NULL.
603 * \param usage Hints about how the data will be used.
604 * \param bufObj Object to be used.
606 * \return GL_TRUE for success, GL_FALSE for failure
607 * \sa glBufferDataARB, dd_function_table::BufferData.
610 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
611 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
612 struct gl_buffer_object
*bufObj
)
618 _mesa_align_free( bufObj
->Data
);
620 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
622 bufObj
->Data
= (GLubyte
*) new_data
;
624 bufObj
->Usage
= usage
;
625 bufObj
->StorageFlags
= storageFlags
;
628 memcpy( bufObj
->Data
, data
, size
);
640 * Replace data in a subrange of buffer object. If the data range
641 * specified by \c size + \c offset extends beyond the end of the buffer or
642 * if \c data is \c NULL, no copy is performed.
644 * This is the default callback for \c dd_function_table::BufferSubData()
645 * Note that all GL error checking will have been done already.
647 * \param ctx GL context.
648 * \param offset Offset of the first byte to be modified.
649 * \param size Size, in bytes, of the data range.
650 * \param data Pointer to the data to store in the buffer object.
651 * \param bufObj Object to be used.
653 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
656 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
657 GLsizeiptr size
, const GLvoid
*data
,
658 struct gl_buffer_object
*bufObj
)
662 /* this should have been caught in _mesa_BufferSubData() */
663 assert(size
+ offset
<= bufObj
->Size
);
666 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
672 * Retrieve data from a subrange of buffer object. If the data range
673 * specified by \c size + \c offset extends beyond the end of the buffer or
674 * if \c data is \c NULL, no copy is performed.
676 * This is the default callback for \c dd_function_table::GetBufferSubData()
677 * Note that all GL error checking will have been done already.
679 * \param ctx GL context.
680 * \param target Buffer object target on which to operate.
681 * \param offset Offset of the first byte to be fetched.
682 * \param size Size, in bytes, of the data range.
683 * \param data Destination for data
684 * \param bufObj Object to be used.
686 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
689 buffer_get_subdata(struct gl_context
*ctx
, GLintptrARB offset
,
690 GLsizeiptrARB size
, GLvoid
*data
,
691 struct gl_buffer_object
*bufObj
)
695 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
696 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
702 * Clear a subrange of the buffer object with copies of the supplied data.
703 * If data is NULL the buffer is filled with zeros.
705 * This is the default callback for \c dd_function_table::ClearBufferSubData()
706 * Note that all GL error checking will have been done already.
708 * \param ctx GL context.
709 * \param offset Offset of the first byte to be cleared.
710 * \param size Size, in bytes, of the to be cleared range.
711 * \param clearValue Source of the data.
712 * \param clearValueSize Size, in bytes, of the supplied data.
713 * \param bufObj Object to be cleared.
715 * \sa glClearBufferSubData, glClearBufferData and
716 * dd_function_table::ClearBufferSubData.
719 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
720 GLintptr offset
, GLsizeiptr size
,
721 const GLvoid
*clearValue
,
722 GLsizeiptr clearValueSize
,
723 struct gl_buffer_object
*bufObj
)
728 assert(ctx
->Driver
.MapBufferRange
);
729 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
731 GL_MAP_INVALIDATE_RANGE_BIT
,
732 bufObj
, MAP_INTERNAL
);
735 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
739 if (clearValue
== NULL
) {
740 /* Clear with zeros, per the spec */
741 memset(dest
, 0, size
);
742 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
746 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
747 memcpy(dest
, clearValue
, clearValueSize
);
748 dest
+= clearValueSize
;
751 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
756 * Default fallback for \c dd_function_table::MapBufferRange().
757 * Called via glMapBufferRange().
760 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
761 GLsizeiptr length
, GLbitfield access
,
762 struct gl_buffer_object
*bufObj
,
763 gl_map_buffer_index index
)
766 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
767 /* Just return a direct pointer to the data */
768 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
769 bufObj
->Mappings
[index
].Length
= length
;
770 bufObj
->Mappings
[index
].Offset
= offset
;
771 bufObj
->Mappings
[index
].AccessFlags
= access
;
772 return bufObj
->Mappings
[index
].Pointer
;
777 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
778 * Called via glFlushMappedBufferRange().
781 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
782 GLintptr offset
, GLsizeiptr length
,
783 struct gl_buffer_object
*obj
,
784 gl_map_buffer_index index
)
796 * Default callback for \c dd_function_table::UnmapBuffer().
798 * The input parameters will have been already tested for errors.
800 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
803 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
804 gl_map_buffer_index index
)
807 /* XXX we might assert here that bufObj->Pointer is non-null */
808 bufObj
->Mappings
[index
].Pointer
= NULL
;
809 bufObj
->Mappings
[index
].Length
= 0;
810 bufObj
->Mappings
[index
].Offset
= 0;
811 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
817 * Default fallback for \c dd_function_table::CopyBufferSubData().
818 * Called via glCopyBufferSubData().
821 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
822 struct gl_buffer_object
*src
,
823 struct gl_buffer_object
*dst
,
824 GLintptr readOffset
, GLintptr writeOffset
,
827 GLubyte
*srcPtr
, *dstPtr
;
830 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
832 GL_MAP_WRITE_BIT
, src
,
838 srcPtr
+= readOffset
;
839 dstPtr
+= writeOffset
;
841 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
842 GL_MAP_READ_BIT
, src
,
844 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
846 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
850 /* Note: the src and dst regions will never overlap. Trying to do so
851 * would generate GL_INVALID_VALUE earlier.
853 if (srcPtr
&& dstPtr
)
854 memcpy(dstPtr
, srcPtr
, size
);
856 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
858 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
864 * Initialize the state associated with buffer objects
867 _mesa_init_buffer_objects( struct gl_context
*ctx
)
871 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
872 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
873 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
875 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
876 ctx
->Shared
->NullBufferObj
);
878 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
879 ctx
->Shared
->NullBufferObj
);
880 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
881 ctx
->Shared
->NullBufferObj
);
883 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
884 ctx
->Shared
->NullBufferObj
);
886 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
887 ctx
->Shared
->NullBufferObj
);
889 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
890 ctx
->Shared
->NullBufferObj
);
892 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
893 ctx
->Shared
->NullBufferObj
);
895 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
896 ctx
->Shared
->NullBufferObj
);
898 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
899 ctx
->Shared
->NullBufferObj
);
901 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
902 ctx
->Shared
->NullBufferObj
);
904 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
905 _mesa_reference_buffer_object(ctx
,
906 &ctx
->UniformBufferBindings
[i
].BufferObject
,
907 ctx
->Shared
->NullBufferObj
);
908 ctx
->UniformBufferBindings
[i
].Offset
= -1;
909 ctx
->UniformBufferBindings
[i
].Size
= -1;
912 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
913 _mesa_reference_buffer_object(ctx
,
914 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
915 ctx
->Shared
->NullBufferObj
);
916 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
917 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
920 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
921 _mesa_reference_buffer_object(ctx
,
922 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
923 ctx
->Shared
->NullBufferObj
);
924 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
925 ctx
->AtomicBufferBindings
[i
].Size
= 0;
931 _mesa_free_buffer_objects( struct gl_context
*ctx
)
935 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
937 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
938 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
940 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
942 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
944 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
946 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
948 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
950 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
952 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
954 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
955 _mesa_reference_buffer_object(ctx
,
956 &ctx
->UniformBufferBindings
[i
].BufferObject
,
960 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
961 _mesa_reference_buffer_object(ctx
,
962 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
966 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
967 _mesa_reference_buffer_object(ctx
,
968 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
975 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
977 struct gl_buffer_object
**buf_handle
,
980 struct gl_buffer_object
*buf
= *buf_handle
;
982 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
983 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
987 if (!buf
|| buf
== &DummyBufferObject
) {
988 /* If this is a new buffer object id, or one which was generated but
989 * never used before, allocate a buffer object now.
991 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
993 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
996 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1004 * Bind the specified target to buffer for the specified context.
1005 * Called by glBindBuffer() and other functions.
1008 bind_buffer_object(struct gl_context
*ctx
,
1009 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1011 struct gl_buffer_object
*oldBufObj
;
1012 struct gl_buffer_object
*newBufObj
= NULL
;
1016 /* Get pointer to old buffer object (to be unbound) */
1017 oldBufObj
= *bindTarget
;
1018 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1019 return; /* rebinding the same buffer object- no change */
1022 * Get pointer to new buffer object (newBufObj)
1025 /* The spec says there's not a buffer object named 0, but we use
1026 * one internally because it simplifies things.
1028 newBufObj
= ctx
->Shared
->NullBufferObj
;
1031 /* non-default buffer object */
1032 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1033 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1034 &newBufObj
, "glBindBuffer"))
1038 /* record usage history */
1039 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1040 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1043 /* bind new buffer */
1044 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1049 * Update the default buffer objects in the given context to reference those
1050 * specified in the shared state and release those referencing the old
1054 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1056 /* Bind the NullBufferObj to remove references to those
1057 * in the shared context hash table.
1059 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1060 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1061 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1062 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1068 * Return the gl_buffer_object for the given ID.
1069 * Always return NULL for ID 0.
1071 struct gl_buffer_object
*
1072 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1077 return (struct gl_buffer_object
*)
1078 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1082 struct gl_buffer_object
*
1083 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1088 return (struct gl_buffer_object
*)
1089 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1093 * A convenience function for direct state access functions that throws
1094 * GL_INVALID_OPERATION if buffer is not the name of an existing
1097 struct gl_buffer_object
*
1098 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1101 struct gl_buffer_object
*bufObj
;
1103 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1104 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1105 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1106 "%s(non-existent buffer object %u)", caller
, buffer
);
1115 * Look up a buffer object for a multi-bind function.
1117 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1118 * of generating an error if the buffer ID is not zero or the name
1119 * of an existing buffer object.
1121 * If the buffer ID refers to an existing buffer object, a pointer
1122 * to the buffer object is returned. If the ID is zero, a pointer
1123 * to the shared NullBufferObj is returned. If the ID is not zero
1124 * and does not refer to a valid buffer object, this function
1127 * This function assumes that the caller has already locked the
1128 * hash table mutex by calling
1129 * _mesa_HashLockMutex(ctx->Shared->BufferObjects).
1131 struct gl_buffer_object
*
1132 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1133 const GLuint
*buffers
,
1134 GLuint index
, const char *caller
)
1136 struct gl_buffer_object
*bufObj
;
1138 if (buffers
[index
] != 0) {
1139 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1141 /* The multi-bind functions don't create the buffer objects
1142 when they don't exist. */
1143 if (bufObj
== &DummyBufferObject
)
1146 bufObj
= ctx
->Shared
->NullBufferObj
;
1149 /* The ARB_multi_bind spec says:
1151 * "An INVALID_OPERATION error is generated if any value
1152 * in <buffers> is not zero or the name of an existing
1153 * buffer object (per binding)."
1155 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1156 "%s(buffers[%u]=%u is not zero or the name "
1157 "of an existing buffer object)",
1158 caller
, index
, buffers
[index
]);
1166 * If *ptr points to obj, set ptr = the Null/default buffer object.
1167 * This is a helper for buffer object deletion.
1168 * The GL spec says that deleting a buffer object causes it to get
1169 * unbound from all arrays in the current context.
1172 unbind(struct gl_context
*ctx
,
1173 struct gl_vertex_array_object
*vao
, unsigned index
,
1174 struct gl_buffer_object
*obj
)
1176 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1177 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1178 vao
->BufferBinding
[index
].Offset
,
1179 vao
->BufferBinding
[index
].Stride
);
1185 * Plug default/fallback buffer object functions into the device
1189 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1191 /* GL_ARB_vertex/pixel_buffer_object */
1192 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1193 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1194 driver
->BufferData
= buffer_data_fallback
;
1195 driver
->BufferSubData
= buffer_sub_data_fallback
;
1196 driver
->GetBufferSubData
= buffer_get_subdata
;
1197 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1199 /* GL_ARB_clear_buffer_object */
1200 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1202 /* GL_ARB_map_buffer_range */
1203 driver
->MapBufferRange
= map_buffer_range_fallback
;
1204 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1206 /* GL_ARB_copy_buffer */
1207 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1212 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1213 struct gl_buffer_object
*bufObj
)
1215 for (int i
= 0; i
< MAP_COUNT
; i
++) {
1216 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1217 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1218 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1219 bufObj
->Mappings
[i
].AccessFlags
= 0;
1225 /**********************************************************************/
1227 /**********************************************************************/
1230 _mesa_BindBuffer_no_error(GLenum target
, GLuint buffer
)
1232 GET_CURRENT_CONTEXT(ctx
);
1234 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1235 bind_buffer_object(ctx
, bindTarget
, buffer
);
1240 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1242 GET_CURRENT_CONTEXT(ctx
);
1244 if (MESA_VERBOSE
& VERBOSE_API
) {
1245 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1246 _mesa_enum_to_string(target
), buffer
);
1249 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1251 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1252 _mesa_enum_to_string(target
));
1256 bind_buffer_object(ctx
, bindTarget
, buffer
);
1260 * Binds a buffer object to an atomic buffer binding point.
1262 * The caller is responsible for validating the offset,
1263 * flushing the vertices and updating NewDriverState.
1266 set_atomic_buffer_binding(struct gl_context
*ctx
,
1267 struct gl_atomic_buffer_binding
*binding
,
1268 struct gl_buffer_object
*bufObj
,
1272 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1274 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
1275 binding
->Offset
= 0;
1278 binding
->Offset
= offset
;
1279 binding
->Size
= size
;
1280 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
1285 * Binds a buffer object to a uniform buffer binding point.
1287 * The caller is responsible for flushing vertices and updating
1291 set_ubo_binding(struct gl_context
*ctx
,
1292 struct gl_uniform_buffer_binding
*binding
,
1293 struct gl_buffer_object
*bufObj
,
1298 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1300 binding
->Offset
= offset
;
1301 binding
->Size
= size
;
1302 binding
->AutomaticSize
= autoSize
;
1304 /* If this is a real buffer object, mark it has having been used
1305 * at some point as a UBO.
1308 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
1312 * Binds a buffer object to a shader storage buffer binding point.
1314 * The caller is responsible for flushing vertices and updating
1318 set_ssbo_binding(struct gl_context
*ctx
,
1319 struct gl_shader_storage_buffer_binding
*binding
,
1320 struct gl_buffer_object
*bufObj
,
1325 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1327 binding
->Offset
= offset
;
1328 binding
->Size
= size
;
1329 binding
->AutomaticSize
= autoSize
;
1331 /* If this is a real buffer object, mark it has having been used
1332 * at some point as a SSBO.
1335 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
1339 * Binds a buffer object to a uniform buffer binding point.
1341 * Unlike set_ubo_binding(), this function also flushes vertices
1342 * and updates NewDriverState. It also checks if the binding
1343 * has actually changed before updating it.
1346 bind_uniform_buffer(struct gl_context
*ctx
,
1348 struct gl_buffer_object
*bufObj
,
1353 struct gl_uniform_buffer_binding
*binding
=
1354 &ctx
->UniformBufferBindings
[index
];
1356 if (binding
->BufferObject
== bufObj
&&
1357 binding
->Offset
== offset
&&
1358 binding
->Size
== size
&&
1359 binding
->AutomaticSize
== autoSize
) {
1363 FLUSH_VERTICES(ctx
, 0);
1364 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
1366 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
1370 * Binds a buffer object to a shader storage buffer binding point.
1372 * Unlike set_ssbo_binding(), this function also flushes vertices
1373 * and updates NewDriverState. It also checks if the binding
1374 * has actually changed before updating it.
1377 bind_shader_storage_buffer(struct gl_context
*ctx
,
1379 struct gl_buffer_object
*bufObj
,
1384 struct gl_shader_storage_buffer_binding
*binding
=
1385 &ctx
->ShaderStorageBufferBindings
[index
];
1387 if (binding
->BufferObject
== bufObj
&&
1388 binding
->Offset
== offset
&&
1389 binding
->Size
== size
&&
1390 binding
->AutomaticSize
== autoSize
) {
1394 FLUSH_VERTICES(ctx
, 0);
1395 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
1397 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
1401 * Bind a buffer object to a uniform block binding point.
1402 * As above, but offset = 0.
1405 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
1407 struct gl_buffer_object
*bufObj
)
1409 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
1410 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1414 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
1416 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1417 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1419 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1423 * Bind a buffer object to a shader storage block binding point.
1424 * As above, but offset = 0.
1427 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
1429 struct gl_buffer_object
*bufObj
)
1431 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
1432 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1436 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
1438 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1439 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1441 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1445 bind_atomic_buffer(struct gl_context
*ctx
, unsigned index
,
1446 struct gl_buffer_object
*bufObj
, GLintptr offset
,
1449 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
1451 struct gl_atomic_buffer_binding
*binding
=
1452 &ctx
->AtomicBufferBindings
[index
];
1453 if (binding
->BufferObject
== bufObj
&&
1454 binding
->Offset
== offset
&&
1455 binding
->Size
== size
) {
1459 FLUSH_VERTICES(ctx
, 0);
1460 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
1462 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
1466 * Delete a set of buffer objects.
1468 * \param n Number of buffer objects to delete.
1469 * \param ids Array of \c n buffer object IDs.
1472 delete_buffers(struct gl_context
*ctx
, GLsizei n
, const GLuint
*ids
)
1474 FLUSH_VERTICES(ctx
, 0);
1476 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1478 for (GLsizei i
= 0; i
< n
; i
++) {
1479 struct gl_buffer_object
*bufObj
=
1480 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1482 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1485 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1487 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1489 /* unbind any vertex pointers bound to this buffer */
1490 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1491 unbind(ctx
, vao
, j
, bufObj
);
1494 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1495 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1497 if (vao
->IndexBufferObj
== bufObj
) {
1498 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1501 /* unbind ARB_draw_indirect binding point */
1502 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1503 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1506 /* unbind ARB_indirect_parameters binding point */
1507 if (ctx
->ParameterBuffer
== bufObj
) {
1508 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1511 /* unbind ARB_compute_shader binding point */
1512 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1513 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1516 /* unbind ARB_copy_buffer binding points */
1517 if (ctx
->CopyReadBuffer
== bufObj
) {
1518 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1520 if (ctx
->CopyWriteBuffer
== bufObj
) {
1521 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1524 /* unbind transform feedback binding points */
1525 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1526 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1528 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1529 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1530 _mesa_bind_buffer_base_transform_feedback(ctx
,
1531 ctx
->TransformFeedback
.CurrentObject
,
1532 j
, ctx
->Shared
->NullBufferObj
,
1537 /* unbind UBO binding points */
1538 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1539 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1540 bind_buffer_base_uniform_buffer(ctx
, j
,
1541 ctx
->Shared
->NullBufferObj
);
1545 if (ctx
->UniformBuffer
== bufObj
) {
1546 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1549 /* unbind SSBO binding points */
1550 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1551 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1552 bind_buffer_base_shader_storage_buffer(ctx
, j
,
1553 ctx
->Shared
->NullBufferObj
);
1557 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1558 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1561 /* unbind Atomci Buffer binding points */
1562 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1563 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1564 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1565 bind_atomic_buffer(ctx
, j
, ctx
->Shared
->NullBufferObj
, 0, 0);
1569 if (ctx
->AtomicBuffer
== bufObj
) {
1570 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1573 /* unbind any pixel pack/unpack pointers bound to this buffer */
1574 if (ctx
->Pack
.BufferObj
== bufObj
) {
1575 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1577 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1578 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1581 if (ctx
->Texture
.BufferObject
== bufObj
) {
1582 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1585 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1586 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1589 /* unbind query buffer binding point */
1590 if (ctx
->QueryBuffer
== bufObj
) {
1591 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1594 /* The ID is immediately freed for re-use */
1595 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1596 /* Make sure we do not run into the classic ABA problem on bind.
1597 * We don't want to allow re-binding a buffer object that's been
1598 * "deleted" by glDeleteBuffers().
1600 * The explicit rebinding to the default object in the current context
1601 * prevents the above in the current context, but another context
1602 * sharing the same objects might suffer from this problem.
1603 * The alternative would be to do the hash lookup in any case on bind
1604 * which would introduce more runtime overhead than this.
1606 bufObj
->DeletePending
= GL_TRUE
;
1607 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1611 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1616 _mesa_DeleteBuffers_no_error(GLsizei n
, const GLuint
*ids
)
1618 GET_CURRENT_CONTEXT(ctx
);
1619 delete_buffers(ctx
, n
, ids
);
1624 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1626 GET_CURRENT_CONTEXT(ctx
);
1629 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1633 delete_buffers(ctx
, n
, ids
);
1638 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1639 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1643 create_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1646 struct gl_buffer_object
*buf
;
1652 * This must be atomic (generation and allocation of buffer object IDs)
1654 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1656 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1658 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1659 * DummyBufferObject. Otherwise, create a new buffer object and insert
1662 for (int i
= 0; i
< n
; i
++) {
1663 buffers
[i
] = first
+ i
;
1665 assert(ctx
->Driver
.NewBufferObject
);
1666 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1668 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCreateBuffers");
1669 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1674 buf
= &DummyBufferObject
;
1676 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1679 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1684 create_buffers_err(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1686 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1688 if (MESA_VERBOSE
& VERBOSE_API
)
1689 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1692 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1696 create_buffers(ctx
, n
, buffers
, dsa
);
1700 * Generate a set of unique buffer object IDs and store them in \c buffers.
1702 * \param n Number of IDs to generate.
1703 * \param buffers Array of \c n locations to store the IDs.
1706 _mesa_GenBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1708 GET_CURRENT_CONTEXT(ctx
);
1709 create_buffers(ctx
, n
, buffers
, false);
1714 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1716 GET_CURRENT_CONTEXT(ctx
);
1717 create_buffers_err(ctx
, n
, buffers
, false);
1721 * Create a set of buffer objects and store their unique IDs in \c buffers.
1723 * \param n Number of IDs to generate.
1724 * \param buffers Array of \c n locations to store the IDs.
1727 _mesa_CreateBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1729 GET_CURRENT_CONTEXT(ctx
);
1730 create_buffers(ctx
, n
, buffers
, true);
1735 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1737 GET_CURRENT_CONTEXT(ctx
);
1738 create_buffers_err(ctx
, n
, buffers
, true);
1743 * Determine if ID is the name of a buffer object.
1745 * \param id ID of the potential buffer object.
1746 * \return \c GL_TRUE if \c id is the name of a buffer object,
1747 * \c GL_FALSE otherwise.
1749 GLboolean GLAPIENTRY
1750 _mesa_IsBuffer(GLuint id
)
1752 struct gl_buffer_object
*bufObj
;
1753 GET_CURRENT_CONTEXT(ctx
);
1754 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1756 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1758 return bufObj
&& bufObj
!= &DummyBufferObject
;
1763 validate_buffer_storage(struct gl_context
*ctx
,
1764 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1765 GLbitfield flags
, const char *func
)
1768 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1772 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1774 GL_MAP_PERSISTENT_BIT
|
1775 GL_MAP_COHERENT_BIT
|
1776 GL_DYNAMIC_STORAGE_BIT
|
1777 GL_CLIENT_STORAGE_BIT
;
1779 if (ctx
->Extensions
.ARB_sparse_buffer
)
1780 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1782 if (flags
& ~valid_flags
) {
1783 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1787 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1789 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1790 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1791 * MAP_READ_BIT or MAP_WRITE_BIT."
1793 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1794 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1795 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1799 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1800 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1801 _mesa_error(ctx
, GL_INVALID_VALUE
,
1802 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1806 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1807 _mesa_error(ctx
, GL_INVALID_VALUE
,
1808 "%s(COHERENT and flags!=PERSISTENT)", func
);
1812 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1813 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1822 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1823 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1824 GLbitfield flags
, const char *func
)
1826 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1827 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1829 FLUSH_VERTICES(ctx
, 0);
1831 bufObj
->Written
= GL_TRUE
;
1832 bufObj
->Immutable
= GL_TRUE
;
1833 bufObj
->MinMaxCacheDirty
= true;
1835 assert(ctx
->Driver
.BufferData
);
1836 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1838 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1839 /* Even though the interaction between AMD_pinned_memory and
1840 * glBufferStorage is not described in the spec, Graham Sellers
1841 * said that it should behave the same as glBufferData.
1843 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1846 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1852 static ALWAYS_INLINE
void
1853 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1854 const GLvoid
*data
, GLbitfield flags
, bool dsa
,
1855 bool no_error
, const char *func
)
1857 GET_CURRENT_CONTEXT(ctx
);
1858 struct gl_buffer_object
*bufObj
;
1862 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1864 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1870 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1871 bufObj
= *bufObjPtr
;
1873 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1879 if (no_error
|| validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1880 buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
, func
);
1885 _mesa_BufferStorage_no_error(GLenum target
, GLsizeiptr size
,
1886 const GLvoid
*data
, GLbitfield flags
)
1888 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, true,
1894 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1897 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, false,
1903 _mesa_NamedBufferStorage_no_error(GLuint buffer
, GLsizeiptr size
,
1904 const GLvoid
*data
, GLbitfield flags
)
1906 /* In direct state access, buffer objects have an unspecified target
1907 * since they are not required to be bound.
1909 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, true,
1910 "glNamedBufferStorage");
1915 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1918 /* In direct state access, buffer objects have an unspecified target
1919 * since they are not required to be bound.
1921 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, false,
1922 "glNamedBufferStorage");
1927 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1928 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1929 GLenum usage
, const char *func
)
1933 if (MESA_VERBOSE
& VERBOSE_API
) {
1934 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1936 _mesa_enum_to_string(target
),
1937 (long int) size
, data
,
1938 _mesa_enum_to_string(usage
));
1942 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1947 case GL_STREAM_DRAW_ARB
:
1948 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1951 case GL_STATIC_DRAW_ARB
:
1952 case GL_DYNAMIC_DRAW_ARB
:
1956 case GL_STREAM_READ_ARB
:
1957 case GL_STREAM_COPY_ARB
:
1958 case GL_STATIC_READ_ARB
:
1959 case GL_STATIC_COPY_ARB
:
1960 case GL_DYNAMIC_READ_ARB
:
1961 case GL_DYNAMIC_COPY_ARB
:
1962 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1966 valid_usage
= false;
1971 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1972 _mesa_enum_to_string(usage
));
1976 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1977 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1981 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1982 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1984 FLUSH_VERTICES(ctx
, 0);
1986 bufObj
->Written
= GL_TRUE
;
1987 bufObj
->MinMaxCacheDirty
= true;
1990 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1991 bufObj
->Name
, size
, data
, usage
);
1998 assert(ctx
->Driver
.BufferData
);
1999 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
2002 GL_DYNAMIC_STORAGE_BIT
,
2004 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
2005 /* From GL_AMD_pinned_memory:
2007 * INVALID_OPERATION is generated by BufferData if <target> is
2008 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
2009 * mapped to the GPU address space.
2011 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2014 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2020 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
2021 const GLvoid
*data
, GLenum usage
)
2023 GET_CURRENT_CONTEXT(ctx
);
2024 struct gl_buffer_object
*bufObj
;
2026 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
2030 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
2035 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
2038 GET_CURRENT_CONTEXT(ctx
);
2039 struct gl_buffer_object
*bufObj
;
2041 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
2045 /* In direct state access, buffer objects have an unspecified target since
2046 * they are not required to be bound.
2048 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2049 "glNamedBufferData");
2054 validate_buffer_sub_data(struct gl_context
*ctx
,
2055 struct gl_buffer_object
*bufObj
,
2056 GLintptr offset
, GLsizeiptr size
,
2059 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2061 /* error already recorded */
2065 if (bufObj
->Immutable
&&
2066 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
2067 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2071 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2072 bufObj
->Usage
== GL_STATIC_COPY
) &&
2073 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
- 1) {
2074 /* If the application declared the buffer as static draw/copy or stream
2075 * draw, it should not be frequently modified with glBufferSubData.
2077 BUFFER_USAGE_WARNING(ctx
,
2078 "using %s(buffer %u, offset %u, size %u) to "
2079 "update a %s buffer",
2080 func
, bufObj
->Name
, offset
, size
,
2081 _mesa_enum_to_string(bufObj
->Usage
));
2089 * Implementation for glBufferSubData and glNamedBufferSubData.
2091 * \param ctx GL context.
2092 * \param bufObj The buffer object.
2093 * \param offset Offset of the first byte of the subdata range.
2094 * \param size Size, in bytes, of the subdata range.
2095 * \param data The data store.
2096 * \param func Name of calling function for recording errors.
2100 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2101 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
)
2106 bufObj
->NumSubDataCalls
++;
2107 bufObj
->Written
= GL_TRUE
;
2108 bufObj
->MinMaxCacheDirty
= true;
2110 assert(ctx
->Driver
.BufferSubData
);
2111 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
2115 static ALWAYS_INLINE
void
2116 buffer_sub_data(GLenum target
, GLuint buffer
, GLintptr offset
,
2117 GLsizeiptr size
, const GLvoid
*data
,
2118 bool dsa
, bool no_error
, const char *func
)
2120 GET_CURRENT_CONTEXT(ctx
);
2121 struct gl_buffer_object
*bufObj
;
2125 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2127 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
2133 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2134 bufObj
= *bufObjPtr
;
2136 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
2142 if (no_error
|| validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
2143 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
2148 _mesa_BufferSubData_no_error(GLenum target
, GLintptr offset
,
2149 GLsizeiptr size
, const GLvoid
*data
)
2151 buffer_sub_data(target
, 0, offset
, size
, data
, false, true,
2157 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
2158 GLsizeiptr size
, const GLvoid
*data
)
2160 buffer_sub_data(target
, 0, offset
, size
, data
, false, false,
2165 _mesa_NamedBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
2166 GLsizeiptr size
, const GLvoid
*data
)
2168 buffer_sub_data(0, buffer
, offset
, size
, data
, true, true,
2169 "glNamedBufferSubData");
2173 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
2174 GLsizeiptr size
, const GLvoid
*data
)
2176 buffer_sub_data(0, buffer
, offset
, size
, data
, true, false,
2177 "glNamedBufferSubData");
2182 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
2183 GLsizeiptr size
, GLvoid
*data
)
2185 GET_CURRENT_CONTEXT(ctx
);
2186 struct gl_buffer_object
*bufObj
;
2188 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
2189 GL_INVALID_OPERATION
);
2193 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2194 "glGetBufferSubData")) {
2198 assert(ctx
->Driver
.GetBufferSubData
);
2199 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2203 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
2204 GLsizeiptr size
, GLvoid
*data
)
2206 GET_CURRENT_CONTEXT(ctx
);
2207 struct gl_buffer_object
*bufObj
;
2209 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2210 "glGetNamedBufferSubData");
2214 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2215 "glGetNamedBufferSubData")) {
2219 assert(ctx
->Driver
.GetBufferSubData
);
2220 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2225 * \param subdata true if caller is *SubData, false if *Data
2228 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2229 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
2230 GLenum format
, GLenum type
, const GLvoid
*data
,
2231 const char *func
, bool subdata
)
2233 mesa_format mesaFormat
;
2234 GLubyte clearValue
[MAX_PIXEL_BYTES
];
2235 GLsizeiptr clearValueSize
;
2237 /* This checks for disallowed mappings. */
2238 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2243 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
2244 format
, type
, func
);
2246 if (mesaFormat
== MESA_FORMAT_NONE
) {
2250 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
2251 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
2252 _mesa_error(ctx
, GL_INVALID_VALUE
,
2253 "%s(offset or size is not a multiple of "
2254 "internalformat size)", func
);
2258 /* Bail early. Negative size has already been checked. */
2262 bufObj
->MinMaxCacheDirty
= true;
2265 /* clear to zeros, per the spec */
2266 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2267 NULL
, clearValueSize
, bufObj
);
2271 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
2272 format
, type
, data
, func
)) {
2276 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2277 clearValue
, clearValueSize
, bufObj
);
2281 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
2282 GLenum type
, const GLvoid
*data
)
2284 GET_CURRENT_CONTEXT(ctx
);
2285 struct gl_buffer_object
*bufObj
;
2287 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2291 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2292 format
, type
, data
, "glClearBufferData", false);
2296 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2297 GLenum format
, GLenum type
, const GLvoid
*data
)
2299 GET_CURRENT_CONTEXT(ctx
);
2300 struct gl_buffer_object
*bufObj
;
2302 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2306 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2307 format
, type
, data
, "glClearNamedBufferData", false);
2312 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2313 GLintptr offset
, GLsizeiptr size
,
2314 GLenum format
, GLenum type
,
2317 GET_CURRENT_CONTEXT(ctx
);
2318 struct gl_buffer_object
*bufObj
;
2320 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2324 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2325 format
, type
, data
, "glClearBufferSubData", true);
2329 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2330 GLintptr offset
, GLsizeiptr size
,
2331 GLenum format
, GLenum type
,
2334 GET_CURRENT_CONTEXT(ctx
);
2335 struct gl_buffer_object
*bufObj
;
2337 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2338 "glClearNamedBufferSubData");
2342 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2343 type
, data
, "glClearNamedBufferSubData", true);
2347 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2349 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2350 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2351 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2352 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2353 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2359 validate_and_unmap_buffer(struct gl_context
*ctx
,
2360 struct gl_buffer_object
*bufObj
,
2363 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2365 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2366 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2367 "%s(buffer is not mapped)", func
);
2372 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2373 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2375 /* check that last 100 bytes are still = magic value */
2376 for (i
= 0; i
< 100; i
++) {
2377 GLuint pos
= bufObj
->Size
- i
- 1;
2378 if (buf
[pos
] != 123) {
2379 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2380 " at position %d (value = %u)\n",
2388 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2389 GLuint i
, unchanged
= 0;
2390 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2392 /* check which bytes changed */
2393 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2394 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2401 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2402 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2407 return unmap_buffer(ctx
, bufObj
);
2410 GLboolean GLAPIENTRY
2411 _mesa_UnmapBuffer_no_error(GLenum target
)
2413 GET_CURRENT_CONTEXT(ctx
);
2414 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2415 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2417 return unmap_buffer(ctx
, bufObj
);
2420 GLboolean GLAPIENTRY
2421 _mesa_UnmapBuffer(GLenum target
)
2423 GET_CURRENT_CONTEXT(ctx
);
2424 struct gl_buffer_object
*bufObj
;
2426 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2430 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2433 GLboolean GLAPIENTRY
2434 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2436 GET_CURRENT_CONTEXT(ctx
);
2437 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2439 return unmap_buffer(ctx
, bufObj
);
2442 GLboolean GLAPIENTRY
2443 _mesa_UnmapNamedBuffer(GLuint buffer
)
2445 GET_CURRENT_CONTEXT(ctx
);
2446 struct gl_buffer_object
*bufObj
;
2448 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2452 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2457 get_buffer_parameter(struct gl_context
*ctx
,
2458 struct gl_buffer_object
*bufObj
, GLenum pname
,
2459 GLint64
*params
, const char *func
)
2462 case GL_BUFFER_SIZE_ARB
:
2463 *params
= bufObj
->Size
;
2465 case GL_BUFFER_USAGE_ARB
:
2466 *params
= bufObj
->Usage
;
2468 case GL_BUFFER_ACCESS_ARB
:
2469 *params
= simplified_access_mode(ctx
,
2470 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2472 case GL_BUFFER_MAPPED_ARB
:
2473 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2475 case GL_BUFFER_ACCESS_FLAGS
:
2476 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2478 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2480 case GL_BUFFER_MAP_OFFSET
:
2481 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2483 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2485 case GL_BUFFER_MAP_LENGTH
:
2486 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2488 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2490 case GL_BUFFER_IMMUTABLE_STORAGE
:
2491 if (!ctx
->Extensions
.ARB_buffer_storage
)
2493 *params
= bufObj
->Immutable
;
2495 case GL_BUFFER_STORAGE_FLAGS
:
2496 if (!ctx
->Extensions
.ARB_buffer_storage
)
2498 *params
= bufObj
->StorageFlags
;
2507 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2508 _mesa_enum_to_string(pname
));
2513 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2515 GET_CURRENT_CONTEXT(ctx
);
2516 struct gl_buffer_object
*bufObj
;
2519 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2520 GL_INVALID_OPERATION
);
2524 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2525 "glGetBufferParameteriv"))
2526 return; /* Error already recorded. */
2528 *params
= (GLint
) parameter
;
2532 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2534 GET_CURRENT_CONTEXT(ctx
);
2535 struct gl_buffer_object
*bufObj
;
2538 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2539 GL_INVALID_OPERATION
);
2543 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2544 "glGetBufferParameteri64v"))
2545 return; /* Error already recorded. */
2547 *params
= parameter
;
2551 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2553 GET_CURRENT_CONTEXT(ctx
);
2554 struct gl_buffer_object
*bufObj
;
2557 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2558 "glGetNamedBufferParameteriv");
2562 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2563 "glGetNamedBufferParameteriv"))
2564 return; /* Error already recorded. */
2566 *params
= (GLint
) parameter
;
2570 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2573 GET_CURRENT_CONTEXT(ctx
);
2574 struct gl_buffer_object
*bufObj
;
2577 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2578 "glGetNamedBufferParameteri64v");
2582 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2583 "glGetNamedBufferParameteri64v"))
2584 return; /* Error already recorded. */
2586 *params
= parameter
;
2591 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2593 GET_CURRENT_CONTEXT(ctx
);
2594 struct gl_buffer_object
*bufObj
;
2596 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2597 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2598 "GL_BUFFER_MAP_POINTER)");
2602 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2603 GL_INVALID_OPERATION
);
2607 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2611 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2613 GET_CURRENT_CONTEXT(ctx
);
2614 struct gl_buffer_object
*bufObj
;
2616 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2617 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2618 "GL_BUFFER_MAP_POINTER)");
2622 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2623 "glGetNamedBufferPointerv");
2627 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2632 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2633 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2634 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2636 if (_mesa_check_disallowed_mapping(src
)) {
2637 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2638 "%s(readBuffer is mapped)", func
);
2642 if (_mesa_check_disallowed_mapping(dst
)) {
2643 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2644 "%s(writeBuffer is mapped)", func
);
2648 if (readOffset
< 0) {
2649 _mesa_error(ctx
, GL_INVALID_VALUE
,
2650 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2654 if (writeOffset
< 0) {
2655 _mesa_error(ctx
, GL_INVALID_VALUE
,
2656 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2661 _mesa_error(ctx
, GL_INVALID_VALUE
,
2662 "%s(size %d < 0)", func
, (int) size
);
2666 if (readOffset
+ size
> src
->Size
) {
2667 _mesa_error(ctx
, GL_INVALID_VALUE
,
2668 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2669 (int) readOffset
, (int) size
, (int) src
->Size
);
2673 if (writeOffset
+ size
> dst
->Size
) {
2674 _mesa_error(ctx
, GL_INVALID_VALUE
,
2675 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2676 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2681 if (readOffset
+ size
<= writeOffset
) {
2684 else if (writeOffset
+ size
<= readOffset
) {
2688 /* overlapping src/dst is illegal */
2689 _mesa_error(ctx
, GL_INVALID_VALUE
,
2690 "%s(overlapping src/dst)", func
);
2695 dst
->MinMaxCacheDirty
= true;
2697 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2701 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2702 GLintptr readOffset
, GLintptr writeOffset
,
2705 GET_CURRENT_CONTEXT(ctx
);
2707 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2708 struct gl_buffer_object
*src
= *src_ptr
;
2710 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2711 struct gl_buffer_object
*dst
= *dst_ptr
;
2713 dst
->MinMaxCacheDirty
= true;
2714 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2719 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2720 GLintptr readOffset
, GLintptr writeOffset
,
2723 GET_CURRENT_CONTEXT(ctx
);
2724 struct gl_buffer_object
*src
, *dst
;
2726 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2727 GL_INVALID_OPERATION
);
2731 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2732 GL_INVALID_OPERATION
);
2736 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2737 "glCopyBufferSubData");
2741 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2742 GLintptr readOffset
,
2743 GLintptr writeOffset
, GLsizeiptr size
)
2745 GET_CURRENT_CONTEXT(ctx
);
2747 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2748 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2750 dst
->MinMaxCacheDirty
= true;
2751 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2756 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2757 GLintptr readOffset
, GLintptr writeOffset
,
2760 GET_CURRENT_CONTEXT(ctx
);
2761 struct gl_buffer_object
*src
, *dst
;
2763 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2764 "glCopyNamedBufferSubData");
2768 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2769 "glCopyNamedBufferSubData");
2773 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2774 "glCopyNamedBufferSubData");
2778 validate_map_buffer_range(struct gl_context
*ctx
,
2779 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2780 GLsizeiptr length
, GLbitfield access
,
2783 GLbitfield allowed_access
;
2785 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2788 _mesa_error(ctx
, GL_INVALID_VALUE
,
2789 "%s(offset %ld < 0)", func
, (long) offset
);
2794 _mesa_error(ctx
, GL_INVALID_VALUE
,
2795 "%s(length %ld < 0)", func
, (long) length
);
2799 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2801 * "An INVALID_OPERATION error is generated for any of the following
2804 * * <length> is zero."
2806 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2807 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2811 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2815 allowed_access
= GL_MAP_READ_BIT
|
2817 GL_MAP_INVALIDATE_RANGE_BIT
|
2818 GL_MAP_INVALIDATE_BUFFER_BIT
|
2819 GL_MAP_FLUSH_EXPLICIT_BIT
|
2820 GL_MAP_UNSYNCHRONIZED_BIT
;
2822 if (ctx
->Extensions
.ARB_buffer_storage
) {
2823 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2824 GL_MAP_COHERENT_BIT
;
2827 if (access
& ~allowed_access
) {
2828 /* generate an error if any bits other than those allowed are set */
2829 _mesa_error(ctx
, GL_INVALID_VALUE
,
2830 "%s(access has undefined bits set)", func
);
2834 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2835 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2836 "%s(access indicates neither read or write)", func
);
2840 if ((access
& GL_MAP_READ_BIT
) &&
2841 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2842 GL_MAP_INVALIDATE_BUFFER_BIT
|
2843 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2844 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2845 "%s(read access with disallowed bits)", func
);
2849 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2850 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2851 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2852 "%s(access has flush explicit without write)", func
);
2856 if (access
& GL_MAP_READ_BIT
&&
2857 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2858 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2859 "%s(buffer does not allow read access)", func
);
2863 if (access
& GL_MAP_WRITE_BIT
&&
2864 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2865 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2866 "%s(buffer does not allow write access)", func
);
2870 if (access
& GL_MAP_COHERENT_BIT
&&
2871 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2872 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2873 "%s(buffer does not allow coherent access)", func
);
2877 if (access
& GL_MAP_PERSISTENT_BIT
&&
2878 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2879 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2880 "%s(buffer does not allow persistent access)", func
);
2884 if (offset
+ length
> bufObj
->Size
) {
2885 _mesa_error(ctx
, GL_INVALID_VALUE
,
2886 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2887 (unsigned long) offset
, (unsigned long) length
,
2888 (unsigned long) bufObj
->Size
);
2892 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2893 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2894 "%s(buffer already mapped)", func
);
2898 if (access
& GL_MAP_WRITE_BIT
) {
2899 bufObj
->NumMapBufferWriteCalls
++;
2900 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2901 bufObj
->Usage
== GL_STATIC_COPY
) &&
2902 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2903 BUFFER_USAGE_WARNING(ctx
,
2904 "using %s(buffer %u, offset %u, length %u) to "
2905 "update a %s buffer",
2906 func
, bufObj
->Name
, offset
, length
,
2907 _mesa_enum_to_string(bufObj
->Usage
));
2915 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2916 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2919 if (!bufObj
->Size
) {
2920 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2924 assert(ctx
->Driver
.MapBufferRange
);
2925 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2928 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2931 /* The driver callback should have set all these fields.
2932 * This is important because other modules (like VBO) might call
2933 * the driver function directly.
2935 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2936 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2937 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2938 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2941 if (access
& GL_MAP_WRITE_BIT
) {
2942 bufObj
->Written
= GL_TRUE
;
2943 bufObj
->MinMaxCacheDirty
= true;
2947 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2948 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2949 bufObj
->Name
, bufObj
->Size
, access
);
2950 /* Access must be write only */
2951 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2953 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2954 for (i
= 0; i
< bufObj
->Size
; i
++)
2961 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2962 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2964 /* buffer is 100 bytes larger than requested, fill with magic value */
2965 for (i
= 0; i
< 100; i
++) {
2966 buf
[bufObj
->Size
- i
- 1] = 123;
2975 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
2976 GLsizeiptr length
, GLbitfield access
)
2978 GET_CURRENT_CONTEXT(ctx
);
2980 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2981 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2983 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2984 "glMapBufferRange");
2988 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2991 GET_CURRENT_CONTEXT(ctx
);
2992 struct gl_buffer_object
*bufObj
;
2994 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2995 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2996 "glMapBufferRange(ARB_map_buffer_range not supported)");
3000 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
3004 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3005 "glMapBufferRange"))
3008 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3009 "glMapBufferRange");
3013 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3014 GLsizeiptr length
, GLbitfield access
)
3016 GET_CURRENT_CONTEXT(ctx
);
3017 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3019 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3020 "glMapNamedBufferRange");
3024 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
3027 GET_CURRENT_CONTEXT(ctx
);
3028 struct gl_buffer_object
*bufObj
;
3030 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3031 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3032 "glMapNamedBufferRange("
3033 "ARB_map_buffer_range not supported)");
3037 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
3041 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3042 "glMapNamedBufferRange"))
3045 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3046 "glMapNamedBufferRange");
3050 * Converts GLenum access from MapBuffer and MapNamedBuffer into
3051 * flags for input to map_buffer_range.
3053 * \return true if the type of requested access is permissible.
3056 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
3060 case GL_READ_ONLY_ARB
:
3061 *flags
= GL_MAP_READ_BIT
;
3062 return _mesa_is_desktop_gl(ctx
);
3063 case GL_WRITE_ONLY_ARB
:
3064 *flags
= GL_MAP_WRITE_BIT
;
3066 case GL_READ_WRITE_ARB
:
3067 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
3068 return _mesa_is_desktop_gl(ctx
);
3075 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
3077 GET_CURRENT_CONTEXT(ctx
);
3079 GLbitfield accessFlags
;
3080 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3082 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3083 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3085 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3090 _mesa_MapBuffer(GLenum target
, GLenum access
)
3092 GET_CURRENT_CONTEXT(ctx
);
3093 struct gl_buffer_object
*bufObj
;
3094 GLbitfield accessFlags
;
3096 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3097 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
3101 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
3105 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3109 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3114 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
3116 GET_CURRENT_CONTEXT(ctx
);
3118 GLbitfield accessFlags
;
3119 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3121 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3123 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3124 "glMapNamedBuffer");
3128 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
3130 GET_CURRENT_CONTEXT(ctx
);
3131 struct gl_buffer_object
*bufObj
;
3132 GLbitfield accessFlags
;
3134 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3135 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
3139 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
3143 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3144 "glMapNamedBuffer"))
3147 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3148 "glMapNamedBuffer");
3153 flush_mapped_buffer_range(struct gl_context
*ctx
,
3154 struct gl_buffer_object
*bufObj
,
3155 GLintptr offset
, GLsizeiptr length
,
3158 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3159 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3160 "%s(ARB_map_buffer_range not supported)", func
);
3165 _mesa_error(ctx
, GL_INVALID_VALUE
,
3166 "%s(offset %ld < 0)", func
, (long) offset
);
3171 _mesa_error(ctx
, GL_INVALID_VALUE
,
3172 "%s(length %ld < 0)", func
, (long) length
);
3176 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
3177 /* buffer is not mapped */
3178 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3179 "%s(buffer is not mapped)", func
);
3183 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
3184 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
3185 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3186 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
3190 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
3191 _mesa_error(ctx
, GL_INVALID_VALUE
,
3192 "%s(offset %ld + length %ld > mapped length %ld)", func
,
3193 (long) offset
, (long) length
,
3194 (long) bufObj
->Mappings
[MAP_USER
].Length
);
3198 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
3200 if (ctx
->Driver
.FlushMappedBufferRange
)
3201 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3206 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
3209 GET_CURRENT_CONTEXT(ctx
);
3210 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3211 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3213 if (ctx
->Driver
.FlushMappedBufferRange
)
3214 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3219 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
3222 GET_CURRENT_CONTEXT(ctx
);
3223 struct gl_buffer_object
*bufObj
;
3225 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
3226 GL_INVALID_OPERATION
);
3230 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3231 "glFlushMappedBufferRange");
3235 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3238 GET_CURRENT_CONTEXT(ctx
);
3239 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3241 if (ctx
->Driver
.FlushMappedBufferRange
)
3242 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3247 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
3250 GET_CURRENT_CONTEXT(ctx
);
3251 struct gl_buffer_object
*bufObj
;
3253 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
3254 "glFlushMappedNamedBufferRange");
3258 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3259 "glFlushMappedNamedBufferRange");
3263 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
, GLuint index
,
3264 struct gl_buffer_object
*bufObj
,
3265 GLintptr offset
, GLsizeiptr size
)
3267 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3272 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3273 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3277 * Bind a region of a buffer object to a uniform block binding point.
3278 * \param index the uniform buffer binding point index
3279 * \param bufObj the buffer object
3280 * \param offset offset to the start of buffer object region
3281 * \param size size of the buffer object region
3284 bind_buffer_range_uniform_buffer_err(struct gl_context
*ctx
, GLuint index
,
3285 struct gl_buffer_object
*bufObj
,
3286 GLintptr offset
, GLsizeiptr size
)
3288 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3289 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3293 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3294 _mesa_error(ctx
, GL_INVALID_VALUE
,
3295 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3296 ctx
->Const
.UniformBufferOffsetAlignment
);
3300 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3304 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3306 struct gl_buffer_object
*bufObj
,
3310 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3315 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3316 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3320 * Bind a region of a buffer object to a shader storage block binding point.
3321 * \param index the shader storage buffer binding point index
3322 * \param bufObj the buffer object
3323 * \param offset offset to the start of buffer object region
3324 * \param size size of the buffer object region
3327 bind_buffer_range_shader_storage_buffer_err(struct gl_context
*ctx
,
3329 struct gl_buffer_object
*bufObj
,
3330 GLintptr offset
, GLsizeiptr size
)
3332 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3333 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3337 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3338 _mesa_error(ctx
, GL_INVALID_VALUE
,
3339 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3340 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3344 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3348 * Binds a buffer object to an atomic buffer binding point.
3350 * Unlike set_atomic_buffer_binding(), this function also validates the
3351 * index and offset, flushes vertices, and updates NewDriverState.
3352 * It also checks if the binding has actually changing before
3356 bind_atomic_buffer_err(struct gl_context
*ctx
, unsigned index
,
3357 struct gl_buffer_object
*bufObj
, GLintptr offset
,
3358 GLsizeiptr size
, const char *name
)
3360 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3361 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3365 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3366 _mesa_error(ctx
, GL_INVALID_VALUE
,
3367 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3368 ATOMIC_COUNTER_SIZE
);
3372 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
3376 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3378 const GLintptr
*offsets
,
3379 const GLsizeiptr
*sizes
)
3381 if (offsets
[index
] < 0) {
3382 /* The ARB_multi_bind spec says:
3384 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3385 * value in <offsets> is less than zero (per binding)."
3387 _mesa_error(ctx
, GL_INVALID_VALUE
,
3388 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3389 index
, (int64_t) offsets
[index
]);
3393 if (sizes
[index
] <= 0) {
3394 /* The ARB_multi_bind spec says:
3396 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3397 * value in <sizes> is less than or equal to zero (per binding)."
3399 _mesa_error(ctx
, GL_INVALID_VALUE
,
3400 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3401 index
, (int64_t) sizes
[index
]);
3409 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3410 GLuint first
, GLsizei count
,
3413 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3414 _mesa_error(ctx
, GL_INVALID_ENUM
,
3415 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3419 /* The ARB_multi_bind_spec says:
3421 * "An INVALID_OPERATION error is generated if <first> + <count> is
3422 * greater than the number of target-specific indexed binding points,
3423 * as described in section 6.7.1."
3425 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3426 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3427 "%s(first=%u + count=%d > the value of "
3428 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3429 caller
, first
, count
,
3430 ctx
->Const
.MaxUniformBufferBindings
);
3438 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3439 GLuint first
, GLsizei count
,
3442 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3443 _mesa_error(ctx
, GL_INVALID_ENUM
,
3444 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3448 /* The ARB_multi_bind_spec says:
3450 * "An INVALID_OPERATION error is generated if <first> + <count> is
3451 * greater than the number of target-specific indexed binding points,
3452 * as described in section 6.7.1."
3454 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3455 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3456 "%s(first=%u + count=%d > the value of "
3457 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3458 caller
, first
, count
,
3459 ctx
->Const
.MaxShaderStorageBufferBindings
);
3467 * Unbind all uniform buffers in the range
3468 * <first> through <first>+<count>-1
3471 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3473 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3475 for (int i
= 0; i
< count
; i
++)
3476 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3477 bufObj
, -1, -1, GL_TRUE
);
3481 * Unbind all shader storage buffers in the range
3482 * <first> through <first>+<count>-1
3485 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3488 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3490 for (int i
= 0; i
< count
; i
++)
3491 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3492 bufObj
, -1, -1, GL_TRUE
);
3496 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3497 const GLuint
*buffers
,
3499 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3502 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3505 /* Assume that at least one binding will be changed */
3506 FLUSH_VERTICES(ctx
, 0);
3507 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3510 /* The ARB_multi_bind spec says:
3512 * "If <buffers> is NULL, all bindings from <first> through
3513 * <first>+<count>-1 are reset to their unbound (zero) state.
3514 * In this case, the offsets and sizes associated with the
3515 * binding points are set to default values, ignoring
3516 * <offsets> and <sizes>."
3518 unbind_uniform_buffers(ctx
, first
, count
);
3522 /* Note that the error semantics for multi-bind commands differ from
3523 * those of other GL commands.
3525 * The Issues section in the ARB_multi_bind spec says:
3527 * "(11) Typically, OpenGL specifies that if an error is generated by a
3528 * command, that command has no effect. This is somewhat
3529 * unfortunate for multi-bind commands, because it would require a
3530 * first pass to scan the entire list of bound objects for errors
3531 * and then a second pass to actually perform the bindings.
3532 * Should we have different error semantics?
3534 * RESOLVED: Yes. In this specification, when the parameters for
3535 * one of the <count> binding points are invalid, that binding point
3536 * is not updated and an error will be generated. However, other
3537 * binding points in the same command will be updated if their
3538 * parameters are valid and no other error occurs."
3541 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3543 for (int i
= 0; i
< count
; i
++) {
3544 struct gl_uniform_buffer_binding
*binding
=
3545 &ctx
->UniformBufferBindings
[first
+ i
];
3546 struct gl_buffer_object
*bufObj
;
3547 GLintptr offset
= 0;
3548 GLsizeiptr size
= 0;
3551 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3554 /* The ARB_multi_bind spec says:
3556 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3557 * pair of values in <offsets> and <sizes> does not respectively
3558 * satisfy the constraints described for those parameters for the
3559 * specified target, as described in section 6.7.1 (per binding)."
3561 * Section 6.7.1 refers to table 6.5, which says:
3563 * "┌───────────────────────────────────────────────────────────────┐
3564 * │ Uniform buffer array bindings (see sec. 7.6) │
3565 * ├─────────────────────┬─────────────────────────────────────────┤
3567 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3568 * │ │ OFFSET_ALIGNMENT │
3570 * │ size restriction │ none │
3571 * └─────────────────────┴─────────────────────────────────────────┘"
3573 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3574 _mesa_error(ctx
, GL_INVALID_VALUE
,
3575 "glBindBuffersRange(offsets[%u]=%" PRId64
3576 " is misaligned; it must be a multiple of the value of "
3577 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3578 "target=GL_UNIFORM_BUFFER)",
3579 i
, (int64_t) offsets
[i
],
3580 ctx
->Const
.UniformBufferOffsetAlignment
);
3584 offset
= offsets
[i
];
3588 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3589 bufObj
= binding
->BufferObject
;
3591 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3594 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3595 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3597 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3601 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3605 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3606 GLsizei count
, const GLuint
*buffers
,
3608 const GLintptr
*offsets
,
3609 const GLsizeiptr
*sizes
,
3612 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3615 /* Assume that at least one binding will be changed */
3616 FLUSH_VERTICES(ctx
, 0);
3617 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3620 /* The ARB_multi_bind spec says:
3622 * "If <buffers> is NULL, all bindings from <first> through
3623 * <first>+<count>-1 are reset to their unbound (zero) state.
3624 * In this case, the offsets and sizes associated with the
3625 * binding points are set to default values, ignoring
3626 * <offsets> and <sizes>."
3628 unbind_shader_storage_buffers(ctx
, first
, count
);
3632 /* Note that the error semantics for multi-bind commands differ from
3633 * those of other GL commands.
3635 * The Issues section in the ARB_multi_bind spec says:
3637 * "(11) Typically, OpenGL specifies that if an error is generated by a
3638 * command, that command has no effect. This is somewhat
3639 * unfortunate for multi-bind commands, because it would require a
3640 * first pass to scan the entire list of bound objects for errors
3641 * and then a second pass to actually perform the bindings.
3642 * Should we have different error semantics?
3644 * RESOLVED: Yes. In this specification, when the parameters for
3645 * one of the <count> binding points are invalid, that binding point
3646 * is not updated and an error will be generated. However, other
3647 * binding points in the same command will be updated if their
3648 * parameters are valid and no other error occurs."
3651 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3653 for (int i
= 0; i
< count
; i
++) {
3654 struct gl_shader_storage_buffer_binding
*binding
=
3655 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3656 struct gl_buffer_object
*bufObj
;
3657 GLintptr offset
= 0;
3658 GLsizeiptr size
= 0;
3661 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3664 /* The ARB_multi_bind spec says:
3666 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3667 * pair of values in <offsets> and <sizes> does not respectively
3668 * satisfy the constraints described for those parameters for the
3669 * specified target, as described in section 6.7.1 (per binding)."
3671 * Section 6.7.1 refers to table 6.5, which says:
3673 * "┌───────────────────────────────────────────────────────────────┐
3674 * │ Shader storage buffer array bindings (see sec. 7.8) │
3675 * ├─────────────────────┬─────────────────────────────────────────┤
3677 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3678 * │ │ BUFFER_OFFSET_ALIGNMENT │
3680 * │ size restriction │ none │
3681 * └─────────────────────┴─────────────────────────────────────────┘"
3683 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3684 _mesa_error(ctx
, GL_INVALID_VALUE
,
3685 "glBindBuffersRange(offsets[%u]=%" PRId64
3686 " is misaligned; it must be a multiple of the value of "
3687 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3688 "target=GL_SHADER_STORAGE_BUFFER)",
3689 i
, (int64_t) offsets
[i
],
3690 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3694 offset
= offsets
[i
];
3698 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3699 bufObj
= binding
->BufferObject
;
3701 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3704 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3705 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3707 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3711 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3715 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3716 struct gl_transform_feedback_object
*tfObj
,
3717 GLuint first
, GLsizei count
, const char *caller
)
3719 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3720 _mesa_error(ctx
, GL_INVALID_ENUM
,
3721 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3725 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3727 * "An INVALID_OPERATION error is generated :
3730 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3731 * FEEDBACK_BUFFER and transform feedback is currently active."
3733 * We assume that this is also meant to apply to BindBuffersRange
3734 * and BindBuffersBase.
3736 if (tfObj
->Active
) {
3737 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3738 "%s(Changing transform feedback buffers while "
3739 "transform feedback is active)", caller
);
3743 /* The ARB_multi_bind_spec says:
3745 * "An INVALID_OPERATION error is generated if <first> + <count> is
3746 * greater than the number of target-specific indexed binding points,
3747 * as described in section 6.7.1."
3749 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3750 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3751 "%s(first=%u + count=%d > the value of "
3752 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3753 caller
, first
, count
,
3754 ctx
->Const
.MaxTransformFeedbackBuffers
);
3762 * Unbind all transform feedback buffers in the range
3763 * <first> through <first>+<count>-1
3766 unbind_xfb_buffers(struct gl_context
*ctx
,
3767 struct gl_transform_feedback_object
*tfObj
,
3768 GLuint first
, GLsizei count
)
3770 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3772 for (int i
= 0; i
< count
; i
++)
3773 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3778 bind_xfb_buffers(struct gl_context
*ctx
,
3779 GLuint first
, GLsizei count
,
3780 const GLuint
*buffers
,
3782 const GLintptr
*offsets
,
3783 const GLsizeiptr
*sizes
,
3786 struct gl_transform_feedback_object
*tfObj
=
3787 ctx
->TransformFeedback
.CurrentObject
;
3789 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3792 /* Assume that at least one binding will be changed */
3793 FLUSH_VERTICES(ctx
, 0);
3794 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3797 /* The ARB_multi_bind spec says:
3799 * "If <buffers> is NULL, all bindings from <first> through
3800 * <first>+<count>-1 are reset to their unbound (zero) state.
3801 * In this case, the offsets and sizes associated with the
3802 * binding points are set to default values, ignoring
3803 * <offsets> and <sizes>."
3805 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3809 /* Note that the error semantics for multi-bind commands differ from
3810 * those of other GL commands.
3812 * The Issues section in the ARB_multi_bind spec says:
3814 * "(11) Typically, OpenGL specifies that if an error is generated by a
3815 * command, that command has no effect. This is somewhat
3816 * unfortunate for multi-bind commands, because it would require a
3817 * first pass to scan the entire list of bound objects for errors
3818 * and then a second pass to actually perform the bindings.
3819 * Should we have different error semantics?
3821 * RESOLVED: Yes. In this specification, when the parameters for
3822 * one of the <count> binding points are invalid, that binding point
3823 * is not updated and an error will be generated. However, other
3824 * binding points in the same command will be updated if their
3825 * parameters are valid and no other error occurs."
3828 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3830 for (int i
= 0; i
< count
; i
++) {
3831 const GLuint index
= first
+ i
;
3832 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3833 struct gl_buffer_object
*bufObj
;
3834 GLintptr offset
= 0;
3835 GLsizeiptr size
= 0;
3838 offset
= offsets
[i
];
3841 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3844 /* The ARB_multi_bind spec says:
3846 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3847 * pair of values in <offsets> and <sizes> does not respectively
3848 * satisfy the constraints described for those parameters for the
3849 * specified target, as described in section 6.7.1 (per binding)."
3851 * Section 6.7.1 refers to table 6.5, which says:
3853 * "┌───────────────────────────────────────────────────────────────┐
3854 * │ Transform feedback array bindings (see sec. 13.2.2) │
3855 * ├───────────────────────┬───────────────────────────────────────┤
3857 * │ offset restriction │ multiple of 4 │
3859 * │ size restriction │ multiple of 4 │
3860 * └───────────────────────┴───────────────────────────────────────┘"
3862 if (offsets
[i
] & 0x3) {
3863 _mesa_error(ctx
, GL_INVALID_VALUE
,
3864 "glBindBuffersRange(offsets[%u]=%" PRId64
3865 " is misaligned; it must be a multiple of 4 when "
3866 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3867 i
, (int64_t) offsets
[i
]);
3871 if (sizes
[i
] & 0x3) {
3872 _mesa_error(ctx
, GL_INVALID_VALUE
,
3873 "glBindBuffersRange(sizes[%u]=%" PRId64
3874 " is misaligned; it must be a multiple of 4 when "
3875 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3876 i
, (int64_t) sizes
[i
]);
3880 offset
= offsets
[i
];
3884 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3885 bufObj
= boundBufObj
;
3887 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3890 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3894 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3898 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3899 GLuint first
, GLsizei count
,
3902 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3903 _mesa_error(ctx
, GL_INVALID_ENUM
,
3904 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3908 /* The ARB_multi_bind_spec says:
3910 * "An INVALID_OPERATION error is generated if <first> + <count> is
3911 * greater than the number of target-specific indexed binding points,
3912 * as described in section 6.7.1."
3914 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3915 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3916 "%s(first=%u + count=%d > the value of "
3917 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3918 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3926 * Unbind all atomic counter buffers in the range
3927 * <first> through <first>+<count>-1
3930 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3932 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3934 for (int i
= 0; i
< count
; i
++)
3935 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3940 bind_atomic_buffers(struct gl_context
*ctx
,
3943 const GLuint
*buffers
,
3945 const GLintptr
*offsets
,
3946 const GLsizeiptr
*sizes
,
3949 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3952 /* Assume that at least one binding will be changed */
3953 FLUSH_VERTICES(ctx
, 0);
3954 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3957 /* The ARB_multi_bind spec says:
3959 * "If <buffers> is NULL, all bindings from <first> through
3960 * <first>+<count>-1 are reset to their unbound (zero) state.
3961 * In this case, the offsets and sizes associated with the
3962 * binding points are set to default values, ignoring
3963 * <offsets> and <sizes>."
3965 unbind_atomic_buffers(ctx
, first
, count
);
3969 /* Note that the error semantics for multi-bind commands differ from
3970 * those of other GL commands.
3972 * The Issues section in the ARB_multi_bind spec says:
3974 * "(11) Typically, OpenGL specifies that if an error is generated by a
3975 * command, that command has no effect. This is somewhat
3976 * unfortunate for multi-bind commands, because it would require a
3977 * first pass to scan the entire list of bound objects for errors
3978 * and then a second pass to actually perform the bindings.
3979 * Should we have different error semantics?
3981 * RESOLVED: Yes. In this specification, when the parameters for
3982 * one of the <count> binding points are invalid, that binding point
3983 * is not updated and an error will be generated. However, other
3984 * binding points in the same command will be updated if their
3985 * parameters are valid and no other error occurs."
3988 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3990 for (int i
= 0; i
< count
; i
++) {
3991 struct gl_atomic_buffer_binding
*binding
=
3992 &ctx
->AtomicBufferBindings
[first
+ i
];
3993 struct gl_buffer_object
*bufObj
;
3994 GLintptr offset
= 0;
3995 GLsizeiptr size
= 0;
3998 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
4001 /* The ARB_multi_bind spec says:
4003 * "An INVALID_VALUE error is generated by BindBuffersRange if any
4004 * pair of values in <offsets> and <sizes> does not respectively
4005 * satisfy the constraints described for those parameters for the
4006 * specified target, as described in section 6.7.1 (per binding)."
4008 * Section 6.7.1 refers to table 6.5, which says:
4010 * "┌───────────────────────────────────────────────────────────────┐
4011 * │ Atomic counter array bindings (see sec. 7.7.2) │
4012 * ├───────────────────────┬───────────────────────────────────────┤
4014 * │ offset restriction │ multiple of 4 │
4016 * │ size restriction │ none │
4017 * └───────────────────────┴───────────────────────────────────────┘"
4019 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
4020 _mesa_error(ctx
, GL_INVALID_VALUE
,
4021 "glBindBuffersRange(offsets[%u]=%" PRId64
4022 " is misaligned; it must be a multiple of %d when "
4023 "target=GL_ATOMIC_COUNTER_BUFFER)",
4024 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
4028 offset
= offsets
[i
];
4032 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
4033 bufObj
= binding
->BufferObject
;
4035 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
4038 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
4041 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4044 static ALWAYS_INLINE
void
4045 bind_buffer_range(GLenum target
, GLuint index
, GLuint buffer
, GLintptr offset
,
4046 GLsizeiptr size
, bool no_error
)
4048 GET_CURRENT_CONTEXT(ctx
);
4049 struct gl_buffer_object
*bufObj
;
4051 if (MESA_VERBOSE
& VERBOSE_API
) {
4052 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
4053 _mesa_enum_to_string(target
), index
, buffer
,
4054 (unsigned long) offset
, (unsigned long) size
);
4058 bufObj
= ctx
->Shared
->NullBufferObj
;
4060 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4061 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4062 &bufObj
, "glBindBufferRange"))
4068 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4069 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4070 index
, bufObj
, offset
, size
);
4072 case GL_UNIFORM_BUFFER
:
4073 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
4075 case GL_SHADER_STORAGE_BUFFER
:
4076 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
,
4079 case GL_ATOMIC_COUNTER_BUFFER
:
4080 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
4083 unreachable("invalid BindBufferRange target with KHR_no_error");
4087 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4088 "glBindBufferRange(invalid buffer=%u)", buffer
);
4094 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
4101 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4102 if (!_mesa_validate_buffer_range_xfb(ctx
,
4103 ctx
->TransformFeedback
.CurrentObject
,
4104 index
, bufObj
, offset
, size
,
4108 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4109 index
, bufObj
, offset
, size
);
4111 case GL_UNIFORM_BUFFER
:
4112 bind_buffer_range_uniform_buffer_err(ctx
, index
, bufObj
, offset
,
4115 case GL_SHADER_STORAGE_BUFFER
:
4116 bind_buffer_range_shader_storage_buffer_err(ctx
, index
, bufObj
,
4119 case GL_ATOMIC_COUNTER_BUFFER
:
4120 bind_atomic_buffer_err(ctx
, index
, bufObj
, offset
, size
,
4121 "glBindBufferRange");
4124 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4131 _mesa_BindBufferRange_no_error(GLenum target
, GLuint index
, GLuint buffer
,
4132 GLintptr offset
, GLsizeiptr size
)
4134 bind_buffer_range(target
, index
, buffer
, offset
, size
, true);
4138 _mesa_BindBufferRange(GLenum target
, GLuint index
,
4139 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
4141 bind_buffer_range(target
, index
, buffer
, offset
, size
, false);
4145 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4147 GET_CURRENT_CONTEXT(ctx
);
4148 struct gl_buffer_object
*bufObj
;
4150 if (MESA_VERBOSE
& VERBOSE_API
) {
4151 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4152 _mesa_enum_to_string(target
), index
, buffer
);
4156 bufObj
= ctx
->Shared
->NullBufferObj
;
4158 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4159 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4160 &bufObj
, "glBindBufferBase"))
4165 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4166 "glBindBufferBase(invalid buffer=%u)", buffer
);
4170 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4171 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4173 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4174 * zero and size equal to the size of buffer."
4176 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4178 * "If the parameter (starting offset or size) was not specified when the
4179 * buffer object was bound, zero is returned."
4181 * What happens if the size of the buffer changes? Does the size of the
4182 * buffer at the moment glBindBufferBase was called still play a role, like
4183 * the first quote would imply, or is the size meaningless in the
4184 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4185 * core spec page 45 says:
4187 * "It is equivalent to calling BindBufferRange with offset zero, while
4188 * size is determined by the size of the bound buffer at the time the
4191 * My interpretation is that the GL 4.1 spec was a clarification of the
4192 * behavior, not a change. In particular, this choice will only make
4193 * rendering work in cases where it would have had undefined results.
4197 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4198 _mesa_bind_buffer_base_transform_feedback(ctx
,
4199 ctx
->TransformFeedback
.CurrentObject
,
4200 index
, bufObj
, false);
4202 case GL_UNIFORM_BUFFER
:
4203 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4205 case GL_SHADER_STORAGE_BUFFER
:
4206 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4208 case GL_ATOMIC_COUNTER_BUFFER
:
4209 bind_atomic_buffer_err(ctx
, index
, bufObj
, 0, 0,
4210 "glBindBufferBase");
4213 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4219 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4220 const GLuint
*buffers
,
4221 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4223 GET_CURRENT_CONTEXT(ctx
);
4225 if (MESA_VERBOSE
& VERBOSE_API
) {
4226 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4227 _mesa_enum_to_string(target
), first
, count
,
4228 buffers
, offsets
, sizes
);
4232 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4233 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4234 "glBindBuffersRange");
4236 case GL_UNIFORM_BUFFER
:
4237 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4238 "glBindBuffersRange");
4240 case GL_SHADER_STORAGE_BUFFER
:
4241 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4242 "glBindBuffersRange");
4244 case GL_ATOMIC_COUNTER_BUFFER
:
4245 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4246 "glBindBuffersRange");
4249 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4250 _mesa_enum_to_string(target
));
4256 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4257 const GLuint
*buffers
)
4259 GET_CURRENT_CONTEXT(ctx
);
4261 if (MESA_VERBOSE
& VERBOSE_API
) {
4262 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4263 _mesa_enum_to_string(target
), first
, count
, buffers
);
4267 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4268 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4269 "glBindBuffersBase");
4271 case GL_UNIFORM_BUFFER
:
4272 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4273 "glBindBuffersBase");
4275 case GL_SHADER_STORAGE_BUFFER
:
4276 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4277 "glBindBuffersBase");
4279 case GL_ATOMIC_COUNTER_BUFFER
:
4280 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4281 "glBindBuffersBase");
4284 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4285 _mesa_enum_to_string(target
));
4290 static ALWAYS_INLINE
void
4291 invalidate_buffer_subdata(struct gl_context
*ctx
,
4292 struct gl_buffer_object
*bufObj
, GLintptr offset
,
4295 if (ctx
->Driver
.InvalidateBufferSubData
)
4296 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4300 _mesa_InvalidateBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
4303 GET_CURRENT_CONTEXT(ctx
);
4305 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4306 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4310 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4313 GET_CURRENT_CONTEXT(ctx
);
4314 struct gl_buffer_object
*bufObj
;
4315 const GLintptr end
= offset
+ length
;
4317 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4318 * Profile) spec says:
4320 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4321 * name of an existing buffer object."
4323 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4324 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4325 _mesa_error(ctx
, GL_INVALID_VALUE
,
4326 "glInvalidateBufferSubData(name = %u) invalid object",
4331 /* The GL_ARB_invalidate_subdata spec says:
4333 * "An INVALID_VALUE error is generated if <offset> or <length> is
4334 * negative, or if <offset> + <length> is greater than the value of
4337 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4338 _mesa_error(ctx
, GL_INVALID_VALUE
,
4339 "glInvalidateBufferSubData(invalid offset or length)");
4343 /* The OpenGL 4.4 (Core Profile) spec says:
4345 * "An INVALID_OPERATION error is generated if buffer is currently
4346 * mapped by MapBuffer or if the invalidate range intersects the range
4347 * currently mapped by MapBufferRange, unless it was mapped
4348 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4350 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4351 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4352 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4353 "glInvalidateBufferSubData(intersection with mapped "
4358 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4362 _mesa_InvalidateBufferData_no_error(GLuint buffer
)
4364 GET_CURRENT_CONTEXT(ctx
);
4366 struct gl_buffer_object
*bufObj
=_mesa_lookup_bufferobj(ctx
, buffer
);
4367 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4371 _mesa_InvalidateBufferData(GLuint buffer
)
4373 GET_CURRENT_CONTEXT(ctx
);
4374 struct gl_buffer_object
*bufObj
;
4376 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4377 * Profile) spec says:
4379 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4380 * name of an existing buffer object."
4382 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4383 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4384 _mesa_error(ctx
, GL_INVALID_VALUE
,
4385 "glInvalidateBufferData(name = %u) invalid object",
4390 /* The OpenGL 4.4 (Core Profile) spec says:
4392 * "An INVALID_OPERATION error is generated if buffer is currently
4393 * mapped by MapBuffer or if the invalidate range intersects the range
4394 * currently mapped by MapBufferRange, unless it was mapped
4395 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4397 if (_mesa_check_disallowed_mapping(bufObj
)) {
4398 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4399 "glInvalidateBufferData(intersection with mapped "
4404 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4408 buffer_page_commitment(struct gl_context
*ctx
,
4409 struct gl_buffer_object
*bufferObj
,
4410 GLintptr offset
, GLsizeiptr size
,
4411 GLboolean commit
, const char *func
)
4413 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4414 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4419 if (size
< 0 || size
> bufferObj
->Size
||
4420 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4421 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4426 /* The GL_ARB_sparse_buffer extension specification says:
4428 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4429 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4430 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4431 * not extend to the end of the buffer's data store."
4433 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4434 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4439 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4440 offset
+ size
!= bufferObj
->Size
) {
4441 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4446 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4450 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4453 GET_CURRENT_CONTEXT(ctx
);
4454 struct gl_buffer_object
*bufferObj
;
4456 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4461 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4462 "glBufferPageCommitmentARB");
4466 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4467 GLsizeiptr size
, GLboolean commit
)
4469 GET_CURRENT_CONTEXT(ctx
);
4470 struct gl_buffer_object
*bufferObj
;
4472 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4473 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4474 /* Note: the extension spec is not clear about the excpected error value. */
4475 _mesa_error(ctx
, GL_INVALID_VALUE
,
4476 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4481 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4482 "glNamedBufferPageCommitmentARB");