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(GLsizei n
, const GLuint
*ids
)
1618 GET_CURRENT_CONTEXT(ctx
);
1621 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1625 delete_buffers(ctx
, n
, ids
);
1630 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1631 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1635 create_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1638 struct gl_buffer_object
*buf
;
1644 * This must be atomic (generation and allocation of buffer object IDs)
1646 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1648 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1650 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1651 * DummyBufferObject. Otherwise, create a new buffer object and insert
1654 for (int i
= 0; i
< n
; i
++) {
1655 buffers
[i
] = first
+ i
;
1657 assert(ctx
->Driver
.NewBufferObject
);
1658 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1660 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCreateBuffers");
1661 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1666 buf
= &DummyBufferObject
;
1668 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1671 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1676 create_buffers_err(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1678 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1680 if (MESA_VERBOSE
& VERBOSE_API
)
1681 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1684 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1688 create_buffers(ctx
, n
, buffers
, dsa
);
1692 * Generate a set of unique buffer object IDs and store them in \c buffers.
1694 * \param n Number of IDs to generate.
1695 * \param buffers Array of \c n locations to store the IDs.
1698 _mesa_GenBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1700 GET_CURRENT_CONTEXT(ctx
);
1701 create_buffers(ctx
, n
, buffers
, false);
1706 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1708 GET_CURRENT_CONTEXT(ctx
);
1709 create_buffers_err(ctx
, n
, buffers
, false);
1713 * Create a set of buffer objects and store their unique IDs in \c buffers.
1715 * \param n Number of IDs to generate.
1716 * \param buffers Array of \c n locations to store the IDs.
1719 _mesa_CreateBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1721 GET_CURRENT_CONTEXT(ctx
);
1722 create_buffers(ctx
, n
, buffers
, true);
1727 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1729 GET_CURRENT_CONTEXT(ctx
);
1730 create_buffers_err(ctx
, n
, buffers
, true);
1735 * Determine if ID is the name of a buffer object.
1737 * \param id ID of the potential buffer object.
1738 * \return \c GL_TRUE if \c id is the name of a buffer object,
1739 * \c GL_FALSE otherwise.
1741 GLboolean GLAPIENTRY
1742 _mesa_IsBuffer(GLuint id
)
1744 struct gl_buffer_object
*bufObj
;
1745 GET_CURRENT_CONTEXT(ctx
);
1746 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1748 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1750 return bufObj
&& bufObj
!= &DummyBufferObject
;
1755 validate_buffer_storage(struct gl_context
*ctx
,
1756 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1757 GLbitfield flags
, const char *func
)
1760 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1764 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1766 GL_MAP_PERSISTENT_BIT
|
1767 GL_MAP_COHERENT_BIT
|
1768 GL_DYNAMIC_STORAGE_BIT
|
1769 GL_CLIENT_STORAGE_BIT
;
1771 if (ctx
->Extensions
.ARB_sparse_buffer
)
1772 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1774 if (flags
& ~valid_flags
) {
1775 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1779 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1781 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1782 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1783 * MAP_READ_BIT or MAP_WRITE_BIT."
1785 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1786 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1787 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1791 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1792 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1793 _mesa_error(ctx
, GL_INVALID_VALUE
,
1794 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1798 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1799 _mesa_error(ctx
, GL_INVALID_VALUE
,
1800 "%s(COHERENT and flags!=PERSISTENT)", func
);
1804 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1805 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1814 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1815 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1816 GLbitfield flags
, const char *func
)
1818 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1819 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1821 FLUSH_VERTICES(ctx
, 0);
1823 bufObj
->Written
= GL_TRUE
;
1824 bufObj
->Immutable
= GL_TRUE
;
1825 bufObj
->MinMaxCacheDirty
= true;
1827 assert(ctx
->Driver
.BufferData
);
1828 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1830 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1831 /* Even though the interaction between AMD_pinned_memory and
1832 * glBufferStorage is not described in the spec, Graham Sellers
1833 * said that it should behave the same as glBufferData.
1835 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1838 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1844 static ALWAYS_INLINE
void
1845 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1846 const GLvoid
*data
, GLbitfield flags
, bool dsa
,
1847 bool no_error
, const char *func
)
1849 GET_CURRENT_CONTEXT(ctx
);
1850 struct gl_buffer_object
*bufObj
;
1854 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1856 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1862 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1863 bufObj
= *bufObjPtr
;
1865 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1871 if (no_error
|| validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1872 buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
, func
);
1877 _mesa_BufferStorage_no_error(GLenum target
, GLsizeiptr size
,
1878 const GLvoid
*data
, GLbitfield flags
)
1880 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, true,
1886 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1889 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, false,
1895 _mesa_NamedBufferStorage_no_error(GLuint buffer
, GLsizeiptr size
,
1896 const GLvoid
*data
, GLbitfield flags
)
1898 /* In direct state access, buffer objects have an unspecified target
1899 * since they are not required to be bound.
1901 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, true,
1902 "glNamedBufferStorage");
1907 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1910 /* In direct state access, buffer objects have an unspecified target
1911 * since they are not required to be bound.
1913 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, false,
1914 "glNamedBufferStorage");
1919 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1920 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1921 GLenum usage
, const char *func
)
1925 if (MESA_VERBOSE
& VERBOSE_API
) {
1926 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1928 _mesa_enum_to_string(target
),
1929 (long int) size
, data
,
1930 _mesa_enum_to_string(usage
));
1934 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1939 case GL_STREAM_DRAW_ARB
:
1940 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1943 case GL_STATIC_DRAW_ARB
:
1944 case GL_DYNAMIC_DRAW_ARB
:
1948 case GL_STREAM_READ_ARB
:
1949 case GL_STREAM_COPY_ARB
:
1950 case GL_STATIC_READ_ARB
:
1951 case GL_STATIC_COPY_ARB
:
1952 case GL_DYNAMIC_READ_ARB
:
1953 case GL_DYNAMIC_COPY_ARB
:
1954 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1958 valid_usage
= false;
1963 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1964 _mesa_enum_to_string(usage
));
1968 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1969 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1973 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1974 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1976 FLUSH_VERTICES(ctx
, 0);
1978 bufObj
->Written
= GL_TRUE
;
1979 bufObj
->MinMaxCacheDirty
= true;
1982 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1983 bufObj
->Name
, size
, data
, usage
);
1990 assert(ctx
->Driver
.BufferData
);
1991 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
1994 GL_DYNAMIC_STORAGE_BIT
,
1996 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1997 /* From GL_AMD_pinned_memory:
1999 * INVALID_OPERATION is generated by BufferData if <target> is
2000 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
2001 * mapped to the GPU address space.
2003 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2006 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2012 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
2013 const GLvoid
*data
, GLenum usage
)
2015 GET_CURRENT_CONTEXT(ctx
);
2016 struct gl_buffer_object
*bufObj
;
2018 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
2022 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
2027 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
2030 GET_CURRENT_CONTEXT(ctx
);
2031 struct gl_buffer_object
*bufObj
;
2033 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
2037 /* In direct state access, buffer objects have an unspecified target since
2038 * they are not required to be bound.
2040 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2041 "glNamedBufferData");
2046 validate_buffer_sub_data(struct gl_context
*ctx
,
2047 struct gl_buffer_object
*bufObj
,
2048 GLintptr offset
, GLsizeiptr size
,
2051 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2053 /* error already recorded */
2057 if (bufObj
->Immutable
&&
2058 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
2059 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2063 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2064 bufObj
->Usage
== GL_STATIC_COPY
) &&
2065 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
- 1) {
2066 /* If the application declared the buffer as static draw/copy or stream
2067 * draw, it should not be frequently modified with glBufferSubData.
2069 BUFFER_USAGE_WARNING(ctx
,
2070 "using %s(buffer %u, offset %u, size %u) to "
2071 "update a %s buffer",
2072 func
, bufObj
->Name
, offset
, size
,
2073 _mesa_enum_to_string(bufObj
->Usage
));
2081 * Implementation for glBufferSubData and glNamedBufferSubData.
2083 * \param ctx GL context.
2084 * \param bufObj The buffer object.
2085 * \param offset Offset of the first byte of the subdata range.
2086 * \param size Size, in bytes, of the subdata range.
2087 * \param data The data store.
2088 * \param func Name of calling function for recording errors.
2092 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2093 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
)
2098 bufObj
->NumSubDataCalls
++;
2099 bufObj
->Written
= GL_TRUE
;
2100 bufObj
->MinMaxCacheDirty
= true;
2102 assert(ctx
->Driver
.BufferSubData
);
2103 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
2107 static ALWAYS_INLINE
void
2108 buffer_sub_data(GLenum target
, GLuint buffer
, GLintptr offset
,
2109 GLsizeiptr size
, const GLvoid
*data
,
2110 bool dsa
, bool no_error
, const char *func
)
2112 GET_CURRENT_CONTEXT(ctx
);
2113 struct gl_buffer_object
*bufObj
;
2117 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2119 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
2125 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2126 bufObj
= *bufObjPtr
;
2128 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
2134 if (no_error
|| validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
2135 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
2140 _mesa_BufferSubData_no_error(GLenum target
, GLintptr offset
,
2141 GLsizeiptr size
, const GLvoid
*data
)
2143 buffer_sub_data(target
, 0, offset
, size
, data
, false, true,
2149 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
2150 GLsizeiptr size
, const GLvoid
*data
)
2152 buffer_sub_data(target
, 0, offset
, size
, data
, false, false,
2157 _mesa_NamedBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
2158 GLsizeiptr size
, const GLvoid
*data
)
2160 buffer_sub_data(0, buffer
, offset
, size
, data
, true, true,
2161 "glNamedBufferSubData");
2165 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
2166 GLsizeiptr size
, const GLvoid
*data
)
2168 buffer_sub_data(0, buffer
, offset
, size
, data
, true, false,
2169 "glNamedBufferSubData");
2174 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
2175 GLsizeiptr size
, GLvoid
*data
)
2177 GET_CURRENT_CONTEXT(ctx
);
2178 struct gl_buffer_object
*bufObj
;
2180 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
2181 GL_INVALID_OPERATION
);
2185 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2186 "glGetBufferSubData")) {
2190 assert(ctx
->Driver
.GetBufferSubData
);
2191 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2195 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
2196 GLsizeiptr size
, GLvoid
*data
)
2198 GET_CURRENT_CONTEXT(ctx
);
2199 struct gl_buffer_object
*bufObj
;
2201 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2202 "glGetNamedBufferSubData");
2206 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2207 "glGetNamedBufferSubData")) {
2211 assert(ctx
->Driver
.GetBufferSubData
);
2212 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2217 * \param subdata true if caller is *SubData, false if *Data
2220 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2221 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
2222 GLenum format
, GLenum type
, const GLvoid
*data
,
2223 const char *func
, bool subdata
)
2225 mesa_format mesaFormat
;
2226 GLubyte clearValue
[MAX_PIXEL_BYTES
];
2227 GLsizeiptr clearValueSize
;
2229 /* This checks for disallowed mappings. */
2230 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2235 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
2236 format
, type
, func
);
2238 if (mesaFormat
== MESA_FORMAT_NONE
) {
2242 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
2243 if (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0) {
2244 _mesa_error(ctx
, GL_INVALID_VALUE
,
2245 "%s(offset or size is not a multiple of "
2246 "internalformat size)", func
);
2250 /* Bail early. Negative size has already been checked. */
2254 bufObj
->MinMaxCacheDirty
= true;
2257 /* clear to zeros, per the spec */
2258 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2259 NULL
, clearValueSize
, bufObj
);
2263 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
2264 format
, type
, data
, func
)) {
2268 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2269 clearValue
, clearValueSize
, bufObj
);
2273 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
2274 GLenum type
, const GLvoid
*data
)
2276 GET_CURRENT_CONTEXT(ctx
);
2277 struct gl_buffer_object
*bufObj
;
2279 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2283 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2284 format
, type
, data
, "glClearBufferData", false);
2288 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2289 GLenum format
, GLenum type
, const GLvoid
*data
)
2291 GET_CURRENT_CONTEXT(ctx
);
2292 struct gl_buffer_object
*bufObj
;
2294 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2298 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2299 format
, type
, data
, "glClearNamedBufferData", false);
2304 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2305 GLintptr offset
, GLsizeiptr size
,
2306 GLenum format
, GLenum type
,
2309 GET_CURRENT_CONTEXT(ctx
);
2310 struct gl_buffer_object
*bufObj
;
2312 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2316 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
,
2317 format
, type
, data
, "glClearBufferSubData", true);
2321 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2322 GLintptr offset
, GLsizeiptr size
,
2323 GLenum format
, GLenum type
,
2326 GET_CURRENT_CONTEXT(ctx
);
2327 struct gl_buffer_object
*bufObj
;
2329 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2330 "glClearNamedBufferSubData");
2334 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2335 type
, data
, "glClearNamedBufferSubData", true);
2339 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2341 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2342 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2343 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2344 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2345 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2351 validate_and_unmap_buffer(struct gl_context
*ctx
,
2352 struct gl_buffer_object
*bufObj
,
2355 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2357 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2358 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2359 "%s(buffer is not mapped)", func
);
2364 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2365 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2367 /* check that last 100 bytes are still = magic value */
2368 for (i
= 0; i
< 100; i
++) {
2369 GLuint pos
= bufObj
->Size
- i
- 1;
2370 if (buf
[pos
] != 123) {
2371 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2372 " at position %d (value = %u)\n",
2380 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2381 GLuint i
, unchanged
= 0;
2382 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2384 /* check which bytes changed */
2385 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2386 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2393 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2394 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2399 return unmap_buffer(ctx
, bufObj
);
2402 GLboolean GLAPIENTRY
2403 _mesa_UnmapBuffer_no_error(GLenum target
)
2405 GET_CURRENT_CONTEXT(ctx
);
2406 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2407 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2409 return unmap_buffer(ctx
, bufObj
);
2412 GLboolean GLAPIENTRY
2413 _mesa_UnmapBuffer(GLenum target
)
2415 GET_CURRENT_CONTEXT(ctx
);
2416 struct gl_buffer_object
*bufObj
;
2418 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2422 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2425 GLboolean GLAPIENTRY
2426 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2428 GET_CURRENT_CONTEXT(ctx
);
2429 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2431 return unmap_buffer(ctx
, bufObj
);
2434 GLboolean GLAPIENTRY
2435 _mesa_UnmapNamedBuffer(GLuint buffer
)
2437 GET_CURRENT_CONTEXT(ctx
);
2438 struct gl_buffer_object
*bufObj
;
2440 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2444 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2449 get_buffer_parameter(struct gl_context
*ctx
,
2450 struct gl_buffer_object
*bufObj
, GLenum pname
,
2451 GLint64
*params
, const char *func
)
2454 case GL_BUFFER_SIZE_ARB
:
2455 *params
= bufObj
->Size
;
2457 case GL_BUFFER_USAGE_ARB
:
2458 *params
= bufObj
->Usage
;
2460 case GL_BUFFER_ACCESS_ARB
:
2461 *params
= simplified_access_mode(ctx
,
2462 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2464 case GL_BUFFER_MAPPED_ARB
:
2465 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2467 case GL_BUFFER_ACCESS_FLAGS
:
2468 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2470 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2472 case GL_BUFFER_MAP_OFFSET
:
2473 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2475 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2477 case GL_BUFFER_MAP_LENGTH
:
2478 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2480 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2482 case GL_BUFFER_IMMUTABLE_STORAGE
:
2483 if (!ctx
->Extensions
.ARB_buffer_storage
)
2485 *params
= bufObj
->Immutable
;
2487 case GL_BUFFER_STORAGE_FLAGS
:
2488 if (!ctx
->Extensions
.ARB_buffer_storage
)
2490 *params
= bufObj
->StorageFlags
;
2499 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2500 _mesa_enum_to_string(pname
));
2505 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2507 GET_CURRENT_CONTEXT(ctx
);
2508 struct gl_buffer_object
*bufObj
;
2511 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2512 GL_INVALID_OPERATION
);
2516 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2517 "glGetBufferParameteriv"))
2518 return; /* Error already recorded. */
2520 *params
= (GLint
) parameter
;
2524 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2526 GET_CURRENT_CONTEXT(ctx
);
2527 struct gl_buffer_object
*bufObj
;
2530 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2531 GL_INVALID_OPERATION
);
2535 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2536 "glGetBufferParameteri64v"))
2537 return; /* Error already recorded. */
2539 *params
= parameter
;
2543 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2545 GET_CURRENT_CONTEXT(ctx
);
2546 struct gl_buffer_object
*bufObj
;
2549 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2550 "glGetNamedBufferParameteriv");
2554 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2555 "glGetNamedBufferParameteriv"))
2556 return; /* Error already recorded. */
2558 *params
= (GLint
) parameter
;
2562 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2565 GET_CURRENT_CONTEXT(ctx
);
2566 struct gl_buffer_object
*bufObj
;
2569 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2570 "glGetNamedBufferParameteri64v");
2574 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2575 "glGetNamedBufferParameteri64v"))
2576 return; /* Error already recorded. */
2578 *params
= parameter
;
2583 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2585 GET_CURRENT_CONTEXT(ctx
);
2586 struct gl_buffer_object
*bufObj
;
2588 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2589 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2590 "GL_BUFFER_MAP_POINTER)");
2594 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2595 GL_INVALID_OPERATION
);
2599 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2603 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2605 GET_CURRENT_CONTEXT(ctx
);
2606 struct gl_buffer_object
*bufObj
;
2608 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2609 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2610 "GL_BUFFER_MAP_POINTER)");
2614 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2615 "glGetNamedBufferPointerv");
2619 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2624 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2625 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2626 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2628 if (_mesa_check_disallowed_mapping(src
)) {
2629 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2630 "%s(readBuffer is mapped)", func
);
2634 if (_mesa_check_disallowed_mapping(dst
)) {
2635 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2636 "%s(writeBuffer is mapped)", func
);
2640 if (readOffset
< 0) {
2641 _mesa_error(ctx
, GL_INVALID_VALUE
,
2642 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2646 if (writeOffset
< 0) {
2647 _mesa_error(ctx
, GL_INVALID_VALUE
,
2648 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2653 _mesa_error(ctx
, GL_INVALID_VALUE
,
2654 "%s(size %d < 0)", func
, (int) size
);
2658 if (readOffset
+ size
> src
->Size
) {
2659 _mesa_error(ctx
, GL_INVALID_VALUE
,
2660 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2661 (int) readOffset
, (int) size
, (int) src
->Size
);
2665 if (writeOffset
+ size
> dst
->Size
) {
2666 _mesa_error(ctx
, GL_INVALID_VALUE
,
2667 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2668 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2673 if (readOffset
+ size
<= writeOffset
) {
2676 else if (writeOffset
+ size
<= readOffset
) {
2680 /* overlapping src/dst is illegal */
2681 _mesa_error(ctx
, GL_INVALID_VALUE
,
2682 "%s(overlapping src/dst)", func
);
2687 dst
->MinMaxCacheDirty
= true;
2689 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2693 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2694 GLintptr readOffset
, GLintptr writeOffset
,
2697 GET_CURRENT_CONTEXT(ctx
);
2699 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2700 struct gl_buffer_object
*src
= *src_ptr
;
2702 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2703 struct gl_buffer_object
*dst
= *dst_ptr
;
2705 dst
->MinMaxCacheDirty
= true;
2706 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2711 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2712 GLintptr readOffset
, GLintptr writeOffset
,
2715 GET_CURRENT_CONTEXT(ctx
);
2716 struct gl_buffer_object
*src
, *dst
;
2718 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2719 GL_INVALID_OPERATION
);
2723 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2724 GL_INVALID_OPERATION
);
2728 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2729 "glCopyBufferSubData");
2733 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2734 GLintptr readOffset
,
2735 GLintptr writeOffset
, GLsizeiptr size
)
2737 GET_CURRENT_CONTEXT(ctx
);
2739 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2740 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2742 dst
->MinMaxCacheDirty
= true;
2743 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2748 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2749 GLintptr readOffset
, GLintptr writeOffset
,
2752 GET_CURRENT_CONTEXT(ctx
);
2753 struct gl_buffer_object
*src
, *dst
;
2755 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2756 "glCopyNamedBufferSubData");
2760 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2761 "glCopyNamedBufferSubData");
2765 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2766 "glCopyNamedBufferSubData");
2770 validate_map_buffer_range(struct gl_context
*ctx
,
2771 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2772 GLsizeiptr length
, GLbitfield access
,
2775 GLbitfield allowed_access
;
2777 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2780 _mesa_error(ctx
, GL_INVALID_VALUE
,
2781 "%s(offset %ld < 0)", func
, (long) offset
);
2786 _mesa_error(ctx
, GL_INVALID_VALUE
,
2787 "%s(length %ld < 0)", func
, (long) length
);
2791 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2793 * "An INVALID_OPERATION error is generated for any of the following
2796 * * <length> is zero."
2798 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2799 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2803 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2807 allowed_access
= GL_MAP_READ_BIT
|
2809 GL_MAP_INVALIDATE_RANGE_BIT
|
2810 GL_MAP_INVALIDATE_BUFFER_BIT
|
2811 GL_MAP_FLUSH_EXPLICIT_BIT
|
2812 GL_MAP_UNSYNCHRONIZED_BIT
;
2814 if (ctx
->Extensions
.ARB_buffer_storage
) {
2815 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2816 GL_MAP_COHERENT_BIT
;
2819 if (access
& ~allowed_access
) {
2820 /* generate an error if any bits other than those allowed are set */
2821 _mesa_error(ctx
, GL_INVALID_VALUE
,
2822 "%s(access has undefined bits set)", func
);
2826 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2827 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2828 "%s(access indicates neither read or write)", func
);
2832 if ((access
& GL_MAP_READ_BIT
) &&
2833 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2834 GL_MAP_INVALIDATE_BUFFER_BIT
|
2835 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2836 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2837 "%s(read access with disallowed bits)", func
);
2841 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2842 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2843 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2844 "%s(access has flush explicit without write)", func
);
2848 if (access
& GL_MAP_READ_BIT
&&
2849 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2850 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2851 "%s(buffer does not allow read access)", func
);
2855 if (access
& GL_MAP_WRITE_BIT
&&
2856 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2857 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2858 "%s(buffer does not allow write access)", func
);
2862 if (access
& GL_MAP_COHERENT_BIT
&&
2863 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2864 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2865 "%s(buffer does not allow coherent access)", func
);
2869 if (access
& GL_MAP_PERSISTENT_BIT
&&
2870 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2871 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2872 "%s(buffer does not allow persistent access)", func
);
2876 if (offset
+ length
> bufObj
->Size
) {
2877 _mesa_error(ctx
, GL_INVALID_VALUE
,
2878 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2879 (unsigned long) offset
, (unsigned long) length
,
2880 (unsigned long) bufObj
->Size
);
2884 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2885 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2886 "%s(buffer already mapped)", func
);
2890 if (access
& GL_MAP_WRITE_BIT
) {
2891 bufObj
->NumMapBufferWriteCalls
++;
2892 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2893 bufObj
->Usage
== GL_STATIC_COPY
) &&
2894 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2895 BUFFER_USAGE_WARNING(ctx
,
2896 "using %s(buffer %u, offset %u, length %u) to "
2897 "update a %s buffer",
2898 func
, bufObj
->Name
, offset
, length
,
2899 _mesa_enum_to_string(bufObj
->Usage
));
2907 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2908 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2911 if (!bufObj
->Size
) {
2912 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2916 assert(ctx
->Driver
.MapBufferRange
);
2917 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2920 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2923 /* The driver callback should have set all these fields.
2924 * This is important because other modules (like VBO) might call
2925 * the driver function directly.
2927 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
2928 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
2929 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
2930 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
2933 if (access
& GL_MAP_WRITE_BIT
) {
2934 bufObj
->Written
= GL_TRUE
;
2935 bufObj
->MinMaxCacheDirty
= true;
2939 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2940 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
2941 bufObj
->Name
, bufObj
->Size
, access
);
2942 /* Access must be write only */
2943 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
2945 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2946 for (i
= 0; i
< bufObj
->Size
; i
++)
2953 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
2954 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2956 /* buffer is 100 bytes larger than requested, fill with magic value */
2957 for (i
= 0; i
< 100; i
++) {
2958 buf
[bufObj
->Size
- i
- 1] = 123;
2967 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
2968 GLsizeiptr length
, GLbitfield access
)
2970 GET_CURRENT_CONTEXT(ctx
);
2972 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2973 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2975 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2976 "glMapBufferRange");
2980 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
2983 GET_CURRENT_CONTEXT(ctx
);
2984 struct gl_buffer_object
*bufObj
;
2986 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
2987 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2988 "glMapBufferRange(ARB_map_buffer_range not supported)");
2992 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
2996 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
2997 "glMapBufferRange"))
3000 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3001 "glMapBufferRange");
3005 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3006 GLsizeiptr length
, GLbitfield access
)
3008 GET_CURRENT_CONTEXT(ctx
);
3009 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3011 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3012 "glMapNamedBufferRange");
3016 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
3019 GET_CURRENT_CONTEXT(ctx
);
3020 struct gl_buffer_object
*bufObj
;
3022 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3023 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3024 "glMapNamedBufferRange("
3025 "ARB_map_buffer_range not supported)");
3029 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
3033 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3034 "glMapNamedBufferRange"))
3037 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3038 "glMapNamedBufferRange");
3042 * Converts GLenum access from MapBuffer and MapNamedBuffer into
3043 * flags for input to map_buffer_range.
3045 * \return true if the type of requested access is permissible.
3048 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
3052 case GL_READ_ONLY_ARB
:
3053 *flags
= GL_MAP_READ_BIT
;
3054 return _mesa_is_desktop_gl(ctx
);
3055 case GL_WRITE_ONLY_ARB
:
3056 *flags
= GL_MAP_WRITE_BIT
;
3058 case GL_READ_WRITE_ARB
:
3059 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
3060 return _mesa_is_desktop_gl(ctx
);
3067 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
3069 GET_CURRENT_CONTEXT(ctx
);
3071 GLbitfield accessFlags
;
3072 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3074 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3075 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3077 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3082 _mesa_MapBuffer(GLenum target
, GLenum access
)
3084 GET_CURRENT_CONTEXT(ctx
);
3085 struct gl_buffer_object
*bufObj
;
3086 GLbitfield accessFlags
;
3088 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3089 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
3093 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
3097 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3101 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3106 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
3108 GET_CURRENT_CONTEXT(ctx
);
3110 GLbitfield accessFlags
;
3111 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3113 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3115 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3116 "glMapNamedBuffer");
3120 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
3122 GET_CURRENT_CONTEXT(ctx
);
3123 struct gl_buffer_object
*bufObj
;
3124 GLbitfield accessFlags
;
3126 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3127 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
3131 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
3135 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3136 "glMapNamedBuffer"))
3139 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3140 "glMapNamedBuffer");
3145 flush_mapped_buffer_range(struct gl_context
*ctx
,
3146 struct gl_buffer_object
*bufObj
,
3147 GLintptr offset
, GLsizeiptr length
,
3150 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3151 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3152 "%s(ARB_map_buffer_range not supported)", func
);
3157 _mesa_error(ctx
, GL_INVALID_VALUE
,
3158 "%s(offset %ld < 0)", func
, (long) offset
);
3163 _mesa_error(ctx
, GL_INVALID_VALUE
,
3164 "%s(length %ld < 0)", func
, (long) length
);
3168 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
3169 /* buffer is not mapped */
3170 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3171 "%s(buffer is not mapped)", func
);
3175 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
3176 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
3177 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3178 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
3182 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
3183 _mesa_error(ctx
, GL_INVALID_VALUE
,
3184 "%s(offset %ld + length %ld > mapped length %ld)", func
,
3185 (long) offset
, (long) length
,
3186 (long) bufObj
->Mappings
[MAP_USER
].Length
);
3190 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
3192 if (ctx
->Driver
.FlushMappedBufferRange
)
3193 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3198 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
3201 GET_CURRENT_CONTEXT(ctx
);
3202 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3203 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3205 if (ctx
->Driver
.FlushMappedBufferRange
)
3206 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3211 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
3214 GET_CURRENT_CONTEXT(ctx
);
3215 struct gl_buffer_object
*bufObj
;
3217 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
3218 GL_INVALID_OPERATION
);
3222 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3223 "glFlushMappedBufferRange");
3227 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3230 GET_CURRENT_CONTEXT(ctx
);
3231 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3233 if (ctx
->Driver
.FlushMappedBufferRange
)
3234 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3239 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
3242 GET_CURRENT_CONTEXT(ctx
);
3243 struct gl_buffer_object
*bufObj
;
3245 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
3246 "glFlushMappedNamedBufferRange");
3250 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3251 "glFlushMappedNamedBufferRange");
3255 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
, GLuint index
,
3256 struct gl_buffer_object
*bufObj
,
3257 GLintptr offset
, GLsizeiptr size
)
3259 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3264 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3265 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3269 * Bind a region of a buffer object to a uniform block binding point.
3270 * \param index the uniform buffer binding point index
3271 * \param bufObj the buffer object
3272 * \param offset offset to the start of buffer object region
3273 * \param size size of the buffer object region
3276 bind_buffer_range_uniform_buffer_err(struct gl_context
*ctx
, GLuint index
,
3277 struct gl_buffer_object
*bufObj
,
3278 GLintptr offset
, GLsizeiptr size
)
3280 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3281 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3285 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3286 _mesa_error(ctx
, GL_INVALID_VALUE
,
3287 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3288 ctx
->Const
.UniformBufferOffsetAlignment
);
3292 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3296 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3298 struct gl_buffer_object
*bufObj
,
3302 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3307 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3308 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3312 * Bind a region of a buffer object to a shader storage block binding point.
3313 * \param index the shader storage buffer binding point index
3314 * \param bufObj the buffer object
3315 * \param offset offset to the start of buffer object region
3316 * \param size size of the buffer object region
3319 bind_buffer_range_shader_storage_buffer_err(struct gl_context
*ctx
,
3321 struct gl_buffer_object
*bufObj
,
3322 GLintptr offset
, GLsizeiptr size
)
3324 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3325 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3329 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3330 _mesa_error(ctx
, GL_INVALID_VALUE
,
3331 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3332 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3336 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3340 * Binds a buffer object to an atomic buffer binding point.
3342 * Unlike set_atomic_buffer_binding(), this function also validates the
3343 * index and offset, flushes vertices, and updates NewDriverState.
3344 * It also checks if the binding has actually changing before
3348 bind_atomic_buffer_err(struct gl_context
*ctx
, unsigned index
,
3349 struct gl_buffer_object
*bufObj
, GLintptr offset
,
3350 GLsizeiptr size
, const char *name
)
3352 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3353 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3357 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3358 _mesa_error(ctx
, GL_INVALID_VALUE
,
3359 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3360 ATOMIC_COUNTER_SIZE
);
3364 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
3368 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3370 const GLintptr
*offsets
,
3371 const GLsizeiptr
*sizes
)
3373 if (offsets
[index
] < 0) {
3374 /* The ARB_multi_bind spec says:
3376 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3377 * value in <offsets> is less than zero (per binding)."
3379 _mesa_error(ctx
, GL_INVALID_VALUE
,
3380 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3381 index
, (int64_t) offsets
[index
]);
3385 if (sizes
[index
] <= 0) {
3386 /* The ARB_multi_bind spec says:
3388 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3389 * value in <sizes> is less than or equal to zero (per binding)."
3391 _mesa_error(ctx
, GL_INVALID_VALUE
,
3392 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3393 index
, (int64_t) sizes
[index
]);
3401 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3402 GLuint first
, GLsizei count
,
3405 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3406 _mesa_error(ctx
, GL_INVALID_ENUM
,
3407 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3411 /* The ARB_multi_bind_spec says:
3413 * "An INVALID_OPERATION error is generated if <first> + <count> is
3414 * greater than the number of target-specific indexed binding points,
3415 * as described in section 6.7.1."
3417 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3418 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3419 "%s(first=%u + count=%d > the value of "
3420 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3421 caller
, first
, count
,
3422 ctx
->Const
.MaxUniformBufferBindings
);
3430 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3431 GLuint first
, GLsizei count
,
3434 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3435 _mesa_error(ctx
, GL_INVALID_ENUM
,
3436 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3440 /* The ARB_multi_bind_spec says:
3442 * "An INVALID_OPERATION error is generated if <first> + <count> is
3443 * greater than the number of target-specific indexed binding points,
3444 * as described in section 6.7.1."
3446 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3447 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3448 "%s(first=%u + count=%d > the value of "
3449 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3450 caller
, first
, count
,
3451 ctx
->Const
.MaxShaderStorageBufferBindings
);
3459 * Unbind all uniform buffers in the range
3460 * <first> through <first>+<count>-1
3463 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3465 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3467 for (int i
= 0; i
< count
; i
++)
3468 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3469 bufObj
, -1, -1, GL_TRUE
);
3473 * Unbind all shader storage buffers in the range
3474 * <first> through <first>+<count>-1
3477 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3480 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3482 for (int i
= 0; i
< count
; i
++)
3483 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3484 bufObj
, -1, -1, GL_TRUE
);
3488 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3489 const GLuint
*buffers
,
3491 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3494 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3497 /* Assume that at least one binding will be changed */
3498 FLUSH_VERTICES(ctx
, 0);
3499 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3502 /* The ARB_multi_bind spec says:
3504 * "If <buffers> is NULL, all bindings from <first> through
3505 * <first>+<count>-1 are reset to their unbound (zero) state.
3506 * In this case, the offsets and sizes associated with the
3507 * binding points are set to default values, ignoring
3508 * <offsets> and <sizes>."
3510 unbind_uniform_buffers(ctx
, first
, count
);
3514 /* Note that the error semantics for multi-bind commands differ from
3515 * those of other GL commands.
3517 * The Issues section in the ARB_multi_bind spec says:
3519 * "(11) Typically, OpenGL specifies that if an error is generated by a
3520 * command, that command has no effect. This is somewhat
3521 * unfortunate for multi-bind commands, because it would require a
3522 * first pass to scan the entire list of bound objects for errors
3523 * and then a second pass to actually perform the bindings.
3524 * Should we have different error semantics?
3526 * RESOLVED: Yes. In this specification, when the parameters for
3527 * one of the <count> binding points are invalid, that binding point
3528 * is not updated and an error will be generated. However, other
3529 * binding points in the same command will be updated if their
3530 * parameters are valid and no other error occurs."
3533 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3535 for (int i
= 0; i
< count
; i
++) {
3536 struct gl_uniform_buffer_binding
*binding
=
3537 &ctx
->UniformBufferBindings
[first
+ i
];
3538 struct gl_buffer_object
*bufObj
;
3539 GLintptr offset
= 0;
3540 GLsizeiptr size
= 0;
3543 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3546 /* The ARB_multi_bind spec says:
3548 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3549 * pair of values in <offsets> and <sizes> does not respectively
3550 * satisfy the constraints described for those parameters for the
3551 * specified target, as described in section 6.7.1 (per binding)."
3553 * Section 6.7.1 refers to table 6.5, which says:
3555 * "┌───────────────────────────────────────────────────────────────┐
3556 * │ Uniform buffer array bindings (see sec. 7.6) │
3557 * ├─────────────────────┬─────────────────────────────────────────┤
3559 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3560 * │ │ OFFSET_ALIGNMENT │
3562 * │ size restriction │ none │
3563 * └─────────────────────┴─────────────────────────────────────────┘"
3565 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3566 _mesa_error(ctx
, GL_INVALID_VALUE
,
3567 "glBindBuffersRange(offsets[%u]=%" PRId64
3568 " is misaligned; it must be a multiple of the value of "
3569 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3570 "target=GL_UNIFORM_BUFFER)",
3571 i
, (int64_t) offsets
[i
],
3572 ctx
->Const
.UniformBufferOffsetAlignment
);
3576 offset
= offsets
[i
];
3580 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3581 bufObj
= binding
->BufferObject
;
3583 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3586 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3587 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3589 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3593 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3597 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3598 GLsizei count
, const GLuint
*buffers
,
3600 const GLintptr
*offsets
,
3601 const GLsizeiptr
*sizes
,
3604 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3607 /* Assume that at least one binding will be changed */
3608 FLUSH_VERTICES(ctx
, 0);
3609 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3612 /* The ARB_multi_bind spec says:
3614 * "If <buffers> is NULL, all bindings from <first> through
3615 * <first>+<count>-1 are reset to their unbound (zero) state.
3616 * In this case, the offsets and sizes associated with the
3617 * binding points are set to default values, ignoring
3618 * <offsets> and <sizes>."
3620 unbind_shader_storage_buffers(ctx
, first
, count
);
3624 /* Note that the error semantics for multi-bind commands differ from
3625 * those of other GL commands.
3627 * The Issues section in the ARB_multi_bind spec says:
3629 * "(11) Typically, OpenGL specifies that if an error is generated by a
3630 * command, that command has no effect. This is somewhat
3631 * unfortunate for multi-bind commands, because it would require a
3632 * first pass to scan the entire list of bound objects for errors
3633 * and then a second pass to actually perform the bindings.
3634 * Should we have different error semantics?
3636 * RESOLVED: Yes. In this specification, when the parameters for
3637 * one of the <count> binding points are invalid, that binding point
3638 * is not updated and an error will be generated. However, other
3639 * binding points in the same command will be updated if their
3640 * parameters are valid and no other error occurs."
3643 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3645 for (int i
= 0; i
< count
; i
++) {
3646 struct gl_shader_storage_buffer_binding
*binding
=
3647 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3648 struct gl_buffer_object
*bufObj
;
3649 GLintptr offset
= 0;
3650 GLsizeiptr size
= 0;
3653 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3656 /* The ARB_multi_bind spec says:
3658 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3659 * pair of values in <offsets> and <sizes> does not respectively
3660 * satisfy the constraints described for those parameters for the
3661 * specified target, as described in section 6.7.1 (per binding)."
3663 * Section 6.7.1 refers to table 6.5, which says:
3665 * "┌───────────────────────────────────────────────────────────────┐
3666 * │ Shader storage buffer array bindings (see sec. 7.8) │
3667 * ├─────────────────────┬─────────────────────────────────────────┤
3669 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3670 * │ │ BUFFER_OFFSET_ALIGNMENT │
3672 * │ size restriction │ none │
3673 * └─────────────────────┴─────────────────────────────────────────┘"
3675 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3676 _mesa_error(ctx
, GL_INVALID_VALUE
,
3677 "glBindBuffersRange(offsets[%u]=%" PRId64
3678 " is misaligned; it must be a multiple of the value of "
3679 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3680 "target=GL_SHADER_STORAGE_BUFFER)",
3681 i
, (int64_t) offsets
[i
],
3682 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3686 offset
= offsets
[i
];
3690 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3691 bufObj
= binding
->BufferObject
;
3693 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3696 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3697 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3699 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3703 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3707 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3708 struct gl_transform_feedback_object
*tfObj
,
3709 GLuint first
, GLsizei count
, const char *caller
)
3711 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3712 _mesa_error(ctx
, GL_INVALID_ENUM
,
3713 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3717 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3719 * "An INVALID_OPERATION error is generated :
3722 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3723 * FEEDBACK_BUFFER and transform feedback is currently active."
3725 * We assume that this is also meant to apply to BindBuffersRange
3726 * and BindBuffersBase.
3728 if (tfObj
->Active
) {
3729 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3730 "%s(Changing transform feedback buffers while "
3731 "transform feedback is active)", caller
);
3735 /* The ARB_multi_bind_spec says:
3737 * "An INVALID_OPERATION error is generated if <first> + <count> is
3738 * greater than the number of target-specific indexed binding points,
3739 * as described in section 6.7.1."
3741 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3742 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3743 "%s(first=%u + count=%d > the value of "
3744 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3745 caller
, first
, count
,
3746 ctx
->Const
.MaxTransformFeedbackBuffers
);
3754 * Unbind all transform feedback buffers in the range
3755 * <first> through <first>+<count>-1
3758 unbind_xfb_buffers(struct gl_context
*ctx
,
3759 struct gl_transform_feedback_object
*tfObj
,
3760 GLuint first
, GLsizei count
)
3762 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3764 for (int i
= 0; i
< count
; i
++)
3765 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3770 bind_xfb_buffers(struct gl_context
*ctx
,
3771 GLuint first
, GLsizei count
,
3772 const GLuint
*buffers
,
3774 const GLintptr
*offsets
,
3775 const GLsizeiptr
*sizes
,
3778 struct gl_transform_feedback_object
*tfObj
=
3779 ctx
->TransformFeedback
.CurrentObject
;
3781 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3784 /* Assume that at least one binding will be changed */
3785 FLUSH_VERTICES(ctx
, 0);
3786 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3789 /* The ARB_multi_bind spec says:
3791 * "If <buffers> is NULL, all bindings from <first> through
3792 * <first>+<count>-1 are reset to their unbound (zero) state.
3793 * In this case, the offsets and sizes associated with the
3794 * binding points are set to default values, ignoring
3795 * <offsets> and <sizes>."
3797 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3801 /* Note that the error semantics for multi-bind commands differ from
3802 * those of other GL commands.
3804 * The Issues section in the ARB_multi_bind spec says:
3806 * "(11) Typically, OpenGL specifies that if an error is generated by a
3807 * command, that command has no effect. This is somewhat
3808 * unfortunate for multi-bind commands, because it would require a
3809 * first pass to scan the entire list of bound objects for errors
3810 * and then a second pass to actually perform the bindings.
3811 * Should we have different error semantics?
3813 * RESOLVED: Yes. In this specification, when the parameters for
3814 * one of the <count> binding points are invalid, that binding point
3815 * is not updated and an error will be generated. However, other
3816 * binding points in the same command will be updated if their
3817 * parameters are valid and no other error occurs."
3820 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3822 for (int i
= 0; i
< count
; i
++) {
3823 const GLuint index
= first
+ i
;
3824 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3825 struct gl_buffer_object
*bufObj
;
3826 GLintptr offset
= 0;
3827 GLsizeiptr size
= 0;
3830 offset
= offsets
[i
];
3833 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3836 /* The ARB_multi_bind spec says:
3838 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3839 * pair of values in <offsets> and <sizes> does not respectively
3840 * satisfy the constraints described for those parameters for the
3841 * specified target, as described in section 6.7.1 (per binding)."
3843 * Section 6.7.1 refers to table 6.5, which says:
3845 * "┌───────────────────────────────────────────────────────────────┐
3846 * │ Transform feedback array bindings (see sec. 13.2.2) │
3847 * ├───────────────────────┬───────────────────────────────────────┤
3849 * │ offset restriction │ multiple of 4 │
3851 * │ size restriction │ multiple of 4 │
3852 * └───────────────────────┴───────────────────────────────────────┘"
3854 if (offsets
[i
] & 0x3) {
3855 _mesa_error(ctx
, GL_INVALID_VALUE
,
3856 "glBindBuffersRange(offsets[%u]=%" PRId64
3857 " is misaligned; it must be a multiple of 4 when "
3858 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3859 i
, (int64_t) offsets
[i
]);
3863 if (sizes
[i
] & 0x3) {
3864 _mesa_error(ctx
, GL_INVALID_VALUE
,
3865 "glBindBuffersRange(sizes[%u]=%" PRId64
3866 " is misaligned; it must be a multiple of 4 when "
3867 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3868 i
, (int64_t) sizes
[i
]);
3872 offset
= offsets
[i
];
3876 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3877 bufObj
= boundBufObj
;
3879 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3882 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3886 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3890 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3891 GLuint first
, GLsizei count
,
3894 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3895 _mesa_error(ctx
, GL_INVALID_ENUM
,
3896 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3900 /* The ARB_multi_bind_spec says:
3902 * "An INVALID_OPERATION error is generated if <first> + <count> is
3903 * greater than the number of target-specific indexed binding points,
3904 * as described in section 6.7.1."
3906 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3907 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3908 "%s(first=%u + count=%d > the value of "
3909 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3910 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3918 * Unbind all atomic counter buffers in the range
3919 * <first> through <first>+<count>-1
3922 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3924 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3926 for (int i
= 0; i
< count
; i
++)
3927 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
3932 bind_atomic_buffers(struct gl_context
*ctx
,
3935 const GLuint
*buffers
,
3937 const GLintptr
*offsets
,
3938 const GLsizeiptr
*sizes
,
3941 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
3944 /* Assume that at least one binding will be changed */
3945 FLUSH_VERTICES(ctx
, 0);
3946 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
3949 /* The ARB_multi_bind spec says:
3951 * "If <buffers> is NULL, all bindings from <first> through
3952 * <first>+<count>-1 are reset to their unbound (zero) state.
3953 * In this case, the offsets and sizes associated with the
3954 * binding points are set to default values, ignoring
3955 * <offsets> and <sizes>."
3957 unbind_atomic_buffers(ctx
, first
, count
);
3961 /* Note that the error semantics for multi-bind commands differ from
3962 * those of other GL commands.
3964 * The Issues section in the ARB_multi_bind spec says:
3966 * "(11) Typically, OpenGL specifies that if an error is generated by a
3967 * command, that command has no effect. This is somewhat
3968 * unfortunate for multi-bind commands, because it would require a
3969 * first pass to scan the entire list of bound objects for errors
3970 * and then a second pass to actually perform the bindings.
3971 * Should we have different error semantics?
3973 * RESOLVED: Yes. In this specification, when the parameters for
3974 * one of the <count> binding points are invalid, that binding point
3975 * is not updated and an error will be generated. However, other
3976 * binding points in the same command will be updated if their
3977 * parameters are valid and no other error occurs."
3980 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3982 for (int i
= 0; i
< count
; i
++) {
3983 struct gl_atomic_buffer_binding
*binding
=
3984 &ctx
->AtomicBufferBindings
[first
+ i
];
3985 struct gl_buffer_object
*bufObj
;
3986 GLintptr offset
= 0;
3987 GLsizeiptr size
= 0;
3990 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3993 /* The ARB_multi_bind spec says:
3995 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3996 * pair of values in <offsets> and <sizes> does not respectively
3997 * satisfy the constraints described for those parameters for the
3998 * specified target, as described in section 6.7.1 (per binding)."
4000 * Section 6.7.1 refers to table 6.5, which says:
4002 * "┌───────────────────────────────────────────────────────────────┐
4003 * │ Atomic counter array bindings (see sec. 7.7.2) │
4004 * ├───────────────────────┬───────────────────────────────────────┤
4006 * │ offset restriction │ multiple of 4 │
4008 * │ size restriction │ none │
4009 * └───────────────────────┴───────────────────────────────────────┘"
4011 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
4012 _mesa_error(ctx
, GL_INVALID_VALUE
,
4013 "glBindBuffersRange(offsets[%u]=%" PRId64
4014 " is misaligned; it must be a multiple of %d when "
4015 "target=GL_ATOMIC_COUNTER_BUFFER)",
4016 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
4020 offset
= offsets
[i
];
4024 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
4025 bufObj
= binding
->BufferObject
;
4027 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
4030 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
4033 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4036 static ALWAYS_INLINE
void
4037 bind_buffer_range(GLenum target
, GLuint index
, GLuint buffer
, GLintptr offset
,
4038 GLsizeiptr size
, bool no_error
)
4040 GET_CURRENT_CONTEXT(ctx
);
4041 struct gl_buffer_object
*bufObj
;
4043 if (MESA_VERBOSE
& VERBOSE_API
) {
4044 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
4045 _mesa_enum_to_string(target
), index
, buffer
,
4046 (unsigned long) offset
, (unsigned long) size
);
4050 bufObj
= ctx
->Shared
->NullBufferObj
;
4052 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4053 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4054 &bufObj
, "glBindBufferRange"))
4060 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4061 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4062 index
, bufObj
, offset
, size
);
4064 case GL_UNIFORM_BUFFER
:
4065 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
4067 case GL_SHADER_STORAGE_BUFFER
:
4068 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
,
4071 case GL_ATOMIC_COUNTER_BUFFER
:
4072 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
4075 unreachable("invalid BindBufferRange target with KHR_no_error");
4079 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4080 "glBindBufferRange(invalid buffer=%u)", buffer
);
4086 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
4093 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4094 if (!_mesa_validate_buffer_range_xfb(ctx
,
4095 ctx
->TransformFeedback
.CurrentObject
,
4096 index
, bufObj
, offset
, size
,
4100 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4101 index
, bufObj
, offset
, size
);
4103 case GL_UNIFORM_BUFFER
:
4104 bind_buffer_range_uniform_buffer_err(ctx
, index
, bufObj
, offset
,
4107 case GL_SHADER_STORAGE_BUFFER
:
4108 bind_buffer_range_shader_storage_buffer_err(ctx
, index
, bufObj
,
4111 case GL_ATOMIC_COUNTER_BUFFER
:
4112 bind_atomic_buffer_err(ctx
, index
, bufObj
, offset
, size
,
4113 "glBindBufferRange");
4116 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4123 _mesa_BindBufferRange_no_error(GLenum target
, GLuint index
, GLuint buffer
,
4124 GLintptr offset
, GLsizeiptr size
)
4126 bind_buffer_range(target
, index
, buffer
, offset
, size
, true);
4130 _mesa_BindBufferRange(GLenum target
, GLuint index
,
4131 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
4133 bind_buffer_range(target
, index
, buffer
, offset
, size
, false);
4137 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4139 GET_CURRENT_CONTEXT(ctx
);
4140 struct gl_buffer_object
*bufObj
;
4142 if (MESA_VERBOSE
& VERBOSE_API
) {
4143 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4144 _mesa_enum_to_string(target
), index
, buffer
);
4148 bufObj
= ctx
->Shared
->NullBufferObj
;
4150 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4151 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4152 &bufObj
, "glBindBufferBase"))
4157 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4158 "glBindBufferBase(invalid buffer=%u)", buffer
);
4162 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4163 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4165 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4166 * zero and size equal to the size of buffer."
4168 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4170 * "If the parameter (starting offset or size) was not specified when the
4171 * buffer object was bound, zero is returned."
4173 * What happens if the size of the buffer changes? Does the size of the
4174 * buffer at the moment glBindBufferBase was called still play a role, like
4175 * the first quote would imply, or is the size meaningless in the
4176 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4177 * core spec page 45 says:
4179 * "It is equivalent to calling BindBufferRange with offset zero, while
4180 * size is determined by the size of the bound buffer at the time the
4183 * My interpretation is that the GL 4.1 spec was a clarification of the
4184 * behavior, not a change. In particular, this choice will only make
4185 * rendering work in cases where it would have had undefined results.
4189 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4190 _mesa_bind_buffer_base_transform_feedback(ctx
,
4191 ctx
->TransformFeedback
.CurrentObject
,
4192 index
, bufObj
, false);
4194 case GL_UNIFORM_BUFFER
:
4195 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4197 case GL_SHADER_STORAGE_BUFFER
:
4198 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4200 case GL_ATOMIC_COUNTER_BUFFER
:
4201 bind_atomic_buffer_err(ctx
, index
, bufObj
, 0, 0,
4202 "glBindBufferBase");
4205 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4211 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4212 const GLuint
*buffers
,
4213 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4215 GET_CURRENT_CONTEXT(ctx
);
4217 if (MESA_VERBOSE
& VERBOSE_API
) {
4218 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4219 _mesa_enum_to_string(target
), first
, count
,
4220 buffers
, offsets
, sizes
);
4224 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4225 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4226 "glBindBuffersRange");
4228 case GL_UNIFORM_BUFFER
:
4229 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4230 "glBindBuffersRange");
4232 case GL_SHADER_STORAGE_BUFFER
:
4233 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4234 "glBindBuffersRange");
4236 case GL_ATOMIC_COUNTER_BUFFER
:
4237 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4238 "glBindBuffersRange");
4241 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4242 _mesa_enum_to_string(target
));
4248 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4249 const GLuint
*buffers
)
4251 GET_CURRENT_CONTEXT(ctx
);
4253 if (MESA_VERBOSE
& VERBOSE_API
) {
4254 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4255 _mesa_enum_to_string(target
), first
, count
, buffers
);
4259 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4260 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4261 "glBindBuffersBase");
4263 case GL_UNIFORM_BUFFER
:
4264 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4265 "glBindBuffersBase");
4267 case GL_SHADER_STORAGE_BUFFER
:
4268 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4269 "glBindBuffersBase");
4271 case GL_ATOMIC_COUNTER_BUFFER
:
4272 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4273 "glBindBuffersBase");
4276 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4277 _mesa_enum_to_string(target
));
4282 static ALWAYS_INLINE
void
4283 invalidate_buffer_subdata(struct gl_context
*ctx
,
4284 struct gl_buffer_object
*bufObj
, GLintptr offset
,
4287 if (ctx
->Driver
.InvalidateBufferSubData
)
4288 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4292 _mesa_InvalidateBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
4295 GET_CURRENT_CONTEXT(ctx
);
4297 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4298 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4302 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4305 GET_CURRENT_CONTEXT(ctx
);
4306 struct gl_buffer_object
*bufObj
;
4307 const GLintptr end
= offset
+ length
;
4309 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4310 * Profile) spec says:
4312 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4313 * name of an existing buffer object."
4315 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4316 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4317 _mesa_error(ctx
, GL_INVALID_VALUE
,
4318 "glInvalidateBufferSubData(name = %u) invalid object",
4323 /* The GL_ARB_invalidate_subdata spec says:
4325 * "An INVALID_VALUE error is generated if <offset> or <length> is
4326 * negative, or if <offset> + <length> is greater than the value of
4329 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4330 _mesa_error(ctx
, GL_INVALID_VALUE
,
4331 "glInvalidateBufferSubData(invalid offset or length)");
4335 /* The OpenGL 4.4 (Core Profile) spec says:
4337 * "An INVALID_OPERATION error is generated if buffer is currently
4338 * mapped by MapBuffer or if the invalidate range intersects the range
4339 * currently mapped by MapBufferRange, unless it was mapped
4340 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4342 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4343 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4344 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4345 "glInvalidateBufferSubData(intersection with mapped "
4350 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4354 _mesa_InvalidateBufferData_no_error(GLuint buffer
)
4356 GET_CURRENT_CONTEXT(ctx
);
4358 struct gl_buffer_object
*bufObj
=_mesa_lookup_bufferobj(ctx
, buffer
);
4359 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4363 _mesa_InvalidateBufferData(GLuint buffer
)
4365 GET_CURRENT_CONTEXT(ctx
);
4366 struct gl_buffer_object
*bufObj
;
4368 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4369 * Profile) spec says:
4371 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4372 * name of an existing buffer object."
4374 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4375 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4376 _mesa_error(ctx
, GL_INVALID_VALUE
,
4377 "glInvalidateBufferData(name = %u) invalid object",
4382 /* The OpenGL 4.4 (Core Profile) spec says:
4384 * "An INVALID_OPERATION error is generated if buffer is currently
4385 * mapped by MapBuffer or if the invalidate range intersects the range
4386 * currently mapped by MapBufferRange, unless it was mapped
4387 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4389 if (_mesa_check_disallowed_mapping(bufObj
)) {
4390 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4391 "glInvalidateBufferData(intersection with mapped "
4396 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4400 buffer_page_commitment(struct gl_context
*ctx
,
4401 struct gl_buffer_object
*bufferObj
,
4402 GLintptr offset
, GLsizeiptr size
,
4403 GLboolean commit
, const char *func
)
4405 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4406 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4411 if (size
< 0 || size
> bufferObj
->Size
||
4412 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4413 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4418 /* The GL_ARB_sparse_buffer extension specification says:
4420 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4421 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4422 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4423 * not extend to the end of the buffer's data store."
4425 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4426 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4431 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4432 offset
+ size
!= bufferObj
->Size
) {
4433 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4438 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4442 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4445 GET_CURRENT_CONTEXT(ctx
);
4446 struct gl_buffer_object
*bufferObj
;
4448 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4453 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4454 "glBufferPageCommitmentARB");
4458 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4459 GLsizeiptr size
, GLboolean commit
)
4461 GET_CURRENT_CONTEXT(ctx
);
4462 struct gl_buffer_object
*bufferObj
;
4464 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4465 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4466 /* Note: the extension spec is not clear about the excpected error value. */
4467 _mesa_error(ctx
, GL_INVALID_VALUE
,
4468 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4473 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4474 "glNamedBufferPageCommitmentARB");