2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
29 * \brief Functions for the GL_ARB_vertex/pixel_buffer_object extensions.
30 * \author Brian Paul, Ian Romanick
34 #include <inttypes.h> /* for PRId64 macro */
35 #include "util/debug.h"
41 #include "bufferobj.h"
44 #include "glformats.h"
46 #include "transformfeedback.h"
52 /*#define BOUNDS_CHECK*/
56 * We count the number of buffer modification calls to check for
57 * inefficient buffer use. This is the number of such calls before we
60 #define BUFFER_WARNING_CALL_COUNT 4
64 * Helper to warn of possible performance issues, such as frequently
65 * updating a buffer created with GL_STATIC_DRAW. Called via the macro
69 buffer_usage_warning(struct gl_context
*ctx
, GLuint
*id
, const char *fmt
, ...)
74 _mesa_gl_vdebug(ctx
, id
,
75 MESA_DEBUG_SOURCE_API
,
76 MESA_DEBUG_TYPE_PERFORMANCE
,
77 MESA_DEBUG_SEVERITY_MEDIUM
,
82 #define BUFFER_USAGE_WARNING(CTX, FMT, ...) \
84 static GLuint id = 0; \
85 buffer_usage_warning(CTX, &id, FMT, ##__VA_ARGS__); \
90 * Used as a placeholder for buffer objects between glGenBuffers() and
91 * glBindBuffer() so that glIsBuffer() can work correctly.
93 static struct gl_buffer_object DummyBufferObject
;
97 * Return pointer to address of a buffer object target.
98 * \param ctx the GL context
99 * \param target the buffer object target to be retrieved.
100 * \return pointer to pointer to the buffer object bound to \c target in the
101 * specified context or \c NULL if \c target is invalid.
103 static inline struct gl_buffer_object
**
104 get_buffer_target(struct gl_context
*ctx
, GLenum target
)
106 /* Other targets are only supported in desktop OpenGL and OpenGL ES 3.0.
108 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
)
109 && target
!= GL_ARRAY_BUFFER
&& target
!= GL_ELEMENT_ARRAY_BUFFER
)
113 case GL_ARRAY_BUFFER_ARB
:
114 return &ctx
->Array
.ArrayBufferObj
;
115 case GL_ELEMENT_ARRAY_BUFFER_ARB
:
116 return &ctx
->Array
.VAO
->IndexBufferObj
;
117 case GL_PIXEL_PACK_BUFFER_EXT
:
118 return &ctx
->Pack
.BufferObj
;
119 case GL_PIXEL_UNPACK_BUFFER_EXT
:
120 return &ctx
->Unpack
.BufferObj
;
121 case GL_COPY_READ_BUFFER
:
122 return &ctx
->CopyReadBuffer
;
123 case GL_COPY_WRITE_BUFFER
:
124 return &ctx
->CopyWriteBuffer
;
125 case GL_QUERY_BUFFER
:
126 if (_mesa_has_ARB_query_buffer_object(ctx
))
127 return &ctx
->QueryBuffer
;
129 case GL_DRAW_INDIRECT_BUFFER
:
130 if ((ctx
->API
== API_OPENGL_CORE
&&
131 ctx
->Extensions
.ARB_draw_indirect
) ||
132 _mesa_is_gles31(ctx
)) {
133 return &ctx
->DrawIndirectBuffer
;
136 case GL_PARAMETER_BUFFER_ARB
:
137 if (_mesa_has_ARB_indirect_parameters(ctx
)) {
138 return &ctx
->ParameterBuffer
;
141 case GL_DISPATCH_INDIRECT_BUFFER
:
142 if (_mesa_has_compute_shaders(ctx
)) {
143 return &ctx
->DispatchIndirectBuffer
;
146 case GL_TRANSFORM_FEEDBACK_BUFFER
:
147 if (ctx
->Extensions
.EXT_transform_feedback
) {
148 return &ctx
->TransformFeedback
.CurrentBuffer
;
151 case GL_TEXTURE_BUFFER
:
152 if (_mesa_has_ARB_texture_buffer_object(ctx
) ||
153 _mesa_has_OES_texture_buffer(ctx
)) {
154 return &ctx
->Texture
.BufferObject
;
157 case GL_UNIFORM_BUFFER
:
158 if (ctx
->Extensions
.ARB_uniform_buffer_object
) {
159 return &ctx
->UniformBuffer
;
162 case GL_SHADER_STORAGE_BUFFER
:
163 if (ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
164 return &ctx
->ShaderStorageBuffer
;
167 case GL_ATOMIC_COUNTER_BUFFER
:
168 if (ctx
->Extensions
.ARB_shader_atomic_counters
) {
169 return &ctx
->AtomicBuffer
;
172 case GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
:
173 if (ctx
->Extensions
.AMD_pinned_memory
) {
174 return &ctx
->ExternalVirtualMemoryBuffer
;
185 * Get the buffer object bound to the specified target in a GL context.
186 * \param ctx the GL context
187 * \param target the buffer object target to be retrieved.
188 * \param error the GL error to record if target is illegal.
189 * \return pointer to the buffer object bound to \c target in the
190 * specified context or \c NULL if \c target is invalid.
192 static inline struct gl_buffer_object
*
193 get_buffer(struct gl_context
*ctx
, const char *func
, GLenum target
,
196 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
199 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
203 if (!_mesa_is_bufferobj(*bufObj
)) {
204 _mesa_error(ctx
, error
, "%s(no buffer bound)", func
);
213 * Convert a GLbitfield describing the mapped buffer access flags
214 * into one of GL_READ_WRITE, GL_READ_ONLY, or GL_WRITE_ONLY.
217 simplified_access_mode(struct gl_context
*ctx
, GLbitfield access
)
219 const GLbitfield rwFlags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
220 if ((access
& rwFlags
) == rwFlags
)
221 return GL_READ_WRITE
;
222 if ((access
& GL_MAP_READ_BIT
) == GL_MAP_READ_BIT
)
224 if ((access
& GL_MAP_WRITE_BIT
) == GL_MAP_WRITE_BIT
)
225 return GL_WRITE_ONLY
;
227 /* Otherwise, AccessFlags is zero (the default state).
229 * Table 2.6 on page 31 (page 44 of the PDF) of the OpenGL 1.5 spec says:
231 * Name Type Initial Value Legal Values
233 * BUFFER_ACCESS enum READ_WRITE READ_ONLY, WRITE_ONLY
236 * However, table 6.8 in the GL_OES_mapbuffer extension says:
238 * Get Value Type Get Command Value Description
239 * --------- ---- ----------- ----- -----------
240 * BUFFER_ACCESS_OES Z1 GetBufferParameteriv WRITE_ONLY_OES buffer map flag
242 * The difference is because GL_OES_mapbuffer only supports mapping buffers
247 return _mesa_is_gles(ctx
) ? GL_WRITE_ONLY
: GL_READ_WRITE
;
252 * Test if the buffer is mapped, and if so, if the mapped range overlaps the
254 * The regions do not overlap if and only if the end of the given
255 * region is before the mapped region or the start of the given region
256 * is after the mapped region.
258 * \param obj Buffer object target on which to operate.
259 * \param offset Offset of the first byte of the subdata range.
260 * \param size Size, in bytes, of the subdata range.
261 * \return true if ranges overlap, false otherwise
265 bufferobj_range_mapped(const struct gl_buffer_object
*obj
,
266 GLintptr offset
, GLsizeiptr size
)
268 if (_mesa_bufferobj_mapped(obj
, MAP_USER
)) {
269 const GLintptr end
= offset
+ size
;
270 const GLintptr mapEnd
= obj
->Mappings
[MAP_USER
].Offset
+
271 obj
->Mappings
[MAP_USER
].Length
;
273 if (!(end
<= obj
->Mappings
[MAP_USER
].Offset
|| offset
>= mapEnd
)) {
282 * Tests the subdata range parameters and sets the GL error code for
283 * \c glBufferSubDataARB, \c glGetBufferSubDataARB and
284 * \c glClearBufferSubData.
286 * \param ctx GL context.
287 * \param bufObj The buffer object.
288 * \param offset Offset of the first byte of the subdata range.
289 * \param size Size, in bytes, of the subdata range.
290 * \param mappedRange If true, checks if an overlapping range is mapped.
291 * If false, checks if buffer is mapped.
292 * \param caller Name of calling function for recording errors.
293 * \return false if error, true otherwise
295 * \sa glBufferSubDataARB, glGetBufferSubDataARB, glClearBufferSubData
298 buffer_object_subdata_range_good(struct gl_context
*ctx
,
299 const struct gl_buffer_object
*bufObj
,
300 GLintptr offset
, GLsizeiptr size
,
301 bool mappedRange
, const char *caller
)
304 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", caller
);
309 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset < 0)", caller
);
313 if (offset
+ size
> bufObj
->Size
) {
314 _mesa_error(ctx
, GL_INVALID_VALUE
,
315 "%s(offset %lu + size %lu > buffer size %lu)", caller
,
316 (unsigned long) offset
,
317 (unsigned long) size
,
318 (unsigned long) bufObj
->Size
);
322 if (bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
)
326 if (bufferobj_range_mapped(bufObj
, offset
, size
)) {
327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
328 "%s(range is mapped without persistent bit)",
334 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
336 "%s(buffer is mapped without persistent bit)",
347 * Test the format and type parameters and set the GL error code for
348 * \c glClearBufferData and \c glClearBufferSubData.
350 * \param ctx GL context.
351 * \param internalformat Format to which the data is to be converted.
352 * \param format Format of the supplied data.
353 * \param type Type of the supplied data.
354 * \param caller Name of calling function for recording errors.
355 * \return If internalformat, format and type are legal the mesa_format
356 * corresponding to internalformat, otherwise MESA_FORMAT_NONE.
358 * \sa glClearBufferData and glClearBufferSubData
361 validate_clear_buffer_format(struct gl_context
*ctx
,
362 GLenum internalformat
,
363 GLenum format
, GLenum type
,
366 mesa_format mesaFormat
;
367 GLenum errorFormatType
;
369 mesaFormat
= _mesa_validate_texbuffer_format(ctx
, internalformat
);
370 if (mesaFormat
== MESA_FORMAT_NONE
) {
371 _mesa_error(ctx
, GL_INVALID_ENUM
,
372 "%s(invalid internalformat)", caller
);
373 return MESA_FORMAT_NONE
;
376 /* NOTE: not mentioned in ARB_clear_buffer_object but according to
377 * EXT_texture_integer there is no conversion between integer and
378 * non-integer formats
380 if (_mesa_is_enum_format_signed_int(format
) !=
381 _mesa_is_format_integer_color(mesaFormat
)) {
382 _mesa_error(ctx
, GL_INVALID_OPERATION
,
383 "%s(integer vs non-integer)", caller
);
384 return MESA_FORMAT_NONE
;
387 if (!_mesa_is_color_format(format
)) {
388 _mesa_error(ctx
, GL_INVALID_ENUM
,
389 "%s(format is not a color format)", caller
);
390 return MESA_FORMAT_NONE
;
393 errorFormatType
= _mesa_error_check_format_and_type(ctx
, format
, type
);
394 if (errorFormatType
!= GL_NO_ERROR
) {
395 _mesa_error(ctx
, GL_INVALID_ENUM
,
396 "%s(invalid format or type)", caller
);
397 return MESA_FORMAT_NONE
;
405 * Convert user-specified clear value to the specified internal format.
407 * \param ctx GL context.
408 * \param internalformat Format to which the data is converted.
409 * \param clearValue Points to the converted clear value.
410 * \param format Format of the supplied data.
411 * \param type Type of the supplied data.
412 * \param data Data which is to be converted to internalformat.
413 * \param caller Name of calling function for recording errors.
414 * \return true if data could be converted, false otherwise.
416 * \sa glClearBufferData, glClearBufferSubData
419 convert_clear_buffer_data(struct gl_context
*ctx
,
420 mesa_format internalformat
,
421 GLubyte
*clearValue
, GLenum format
, GLenum type
,
422 const GLvoid
*data
, const char *caller
)
424 GLenum internalformatBase
= _mesa_get_format_base_format(internalformat
);
426 if (_mesa_texstore(ctx
, 1, internalformatBase
, internalformat
,
427 0, &clearValue
, 1, 1, 1,
428 format
, type
, data
, &ctx
->Unpack
)) {
432 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
439 * Allocate and initialize a new buffer object.
441 * Default callback for the \c dd_function_table::NewBufferObject() hook.
443 static struct gl_buffer_object
*
444 _mesa_new_buffer_object(struct gl_context
*ctx
, GLuint name
)
446 struct gl_buffer_object
*obj
= MALLOC_STRUCT(gl_buffer_object
);
450 _mesa_initialize_buffer_object(ctx
, obj
, name
);
456 * Delete a buffer object.
458 * Default callback for the \c dd_function_table::DeleteBuffer() hook.
461 _mesa_delete_buffer_object(struct gl_context
*ctx
,
462 struct gl_buffer_object
*bufObj
)
466 vbo_delete_minmax_cache(bufObj
);
467 _mesa_align_free(bufObj
->Data
);
469 /* assign strange values here to help w/ debugging */
470 bufObj
->RefCount
= -1000;
473 mtx_destroy(&bufObj
->Mutex
);
481 * Set ptr to bufObj w/ reference counting.
482 * This is normally only called from the _mesa_reference_buffer_object() macro
483 * when there's a real pointer change.
486 _mesa_reference_buffer_object_(struct gl_context
*ctx
,
487 struct gl_buffer_object
**ptr
,
488 struct gl_buffer_object
*bufObj
)
491 /* Unreference the old buffer */
492 GLboolean deleteFlag
= GL_FALSE
;
493 struct gl_buffer_object
*oldObj
= *ptr
;
495 mtx_lock(&oldObj
->Mutex
);
496 assert(oldObj
->RefCount
> 0);
498 deleteFlag
= (oldObj
->RefCount
== 0);
499 mtx_unlock(&oldObj
->Mutex
);
502 assert(ctx
->Driver
.DeleteBuffer
);
503 ctx
->Driver
.DeleteBuffer(ctx
, oldObj
);
511 /* reference new buffer */
512 mtx_lock(&bufObj
->Mutex
);
513 assert(bufObj
->RefCount
> 0);
517 mtx_unlock(&bufObj
->Mutex
);
523 * Get the value of MESA_NO_MINMAX_CACHE.
526 get_no_minmax_cache()
528 static bool read
= false;
529 static bool disable
= false;
532 disable
= env_var_as_boolean("MESA_NO_MINMAX_CACHE", false);
541 * Initialize a buffer object to default values.
544 _mesa_initialize_buffer_object(struct gl_context
*ctx
,
545 struct gl_buffer_object
*obj
,
548 memset(obj
, 0, sizeof(struct gl_buffer_object
));
549 mtx_init(&obj
->Mutex
, mtx_plain
);
552 obj
->Usage
= GL_STATIC_DRAW_ARB
;
554 if (get_no_minmax_cache())
555 obj
->UsageHistory
|= USAGE_DISABLE_MINMAX_CACHE
;
561 * Callback called from _mesa_HashWalk()
564 count_buffer_size(GLuint key
, void *data
, void *userData
)
566 const struct gl_buffer_object
*bufObj
=
567 (const struct gl_buffer_object
*) data
;
568 GLuint
*total
= (GLuint
*) userData
;
571 *total
= *total
+ bufObj
->Size
;
576 * Compute total size (in bytes) of all buffer objects for the given context.
577 * For debugging purposes.
580 _mesa_total_buffer_object_memory(struct gl_context
*ctx
)
584 _mesa_HashWalk(ctx
->Shared
->BufferObjects
, count_buffer_size
, &total
);
591 * Allocate space for and store data in a buffer object. Any data that was
592 * previously stored in the buffer object is lost. If \c data is \c NULL,
593 * memory will be allocated, but no copy will occur.
595 * This is the default callback for \c dd_function_table::BufferData()
596 * Note that all GL error checking will have been done already.
598 * \param ctx GL context.
599 * \param target Buffer object target on which to operate.
600 * \param size Size, in bytes, of the new data store.
601 * \param data Pointer to the data to store in the buffer object. This
602 * pointer may be \c NULL.
603 * \param usage Hints about how the data will be used.
604 * \param bufObj Object to be used.
606 * \return GL_TRUE for success, GL_FALSE for failure
607 * \sa glBufferDataARB, dd_function_table::BufferData.
610 buffer_data_fallback(struct gl_context
*ctx
, GLenum target
, GLsizeiptr size
,
611 const GLvoid
*data
, GLenum usage
, GLenum storageFlags
,
612 struct gl_buffer_object
*bufObj
)
618 _mesa_align_free( bufObj
->Data
);
620 new_data
= _mesa_align_malloc( size
, ctx
->Const
.MinMapBufferAlignment
);
622 bufObj
->Data
= (GLubyte
*) new_data
;
624 bufObj
->Usage
= usage
;
625 bufObj
->StorageFlags
= storageFlags
;
628 memcpy( bufObj
->Data
, data
, size
);
640 * Replace data in a subrange of buffer object. If the data range
641 * specified by \c size + \c offset extends beyond the end of the buffer or
642 * if \c data is \c NULL, no copy is performed.
644 * This is the default callback for \c dd_function_table::BufferSubData()
645 * Note that all GL error checking will have been done already.
647 * \param ctx GL context.
648 * \param offset Offset of the first byte to be modified.
649 * \param size Size, in bytes, of the data range.
650 * \param data Pointer to the data to store in the buffer object.
651 * \param bufObj Object to be used.
653 * \sa glBufferSubDataARB, dd_function_table::BufferSubData.
656 buffer_sub_data_fallback(struct gl_context
*ctx
, GLintptr offset
,
657 GLsizeiptr size
, const GLvoid
*data
,
658 struct gl_buffer_object
*bufObj
)
662 /* this should have been caught in _mesa_BufferSubData() */
663 assert(size
+ offset
<= bufObj
->Size
);
666 memcpy( (GLubyte
*) bufObj
->Data
+ offset
, data
, size
);
672 * Retrieve data from a subrange of buffer object. If the data range
673 * specified by \c size + \c offset extends beyond the end of the buffer or
674 * if \c data is \c NULL, no copy is performed.
676 * This is the default callback for \c dd_function_table::GetBufferSubData()
677 * Note that all GL error checking will have been done already.
679 * \param ctx GL context.
680 * \param target Buffer object target on which to operate.
681 * \param offset Offset of the first byte to be fetched.
682 * \param size Size, in bytes, of the data range.
683 * \param data Destination for data
684 * \param bufObj Object to be used.
686 * \sa glBufferGetSubDataARB, dd_function_table::GetBufferSubData.
689 buffer_get_subdata(struct gl_context
*ctx
, GLintptrARB offset
,
690 GLsizeiptrARB size
, GLvoid
*data
,
691 struct gl_buffer_object
*bufObj
)
695 if (bufObj
->Data
&& ((GLsizeiptrARB
) (size
+ offset
) <= bufObj
->Size
)) {
696 memcpy( data
, (GLubyte
*) bufObj
->Data
+ offset
, size
);
702 * Clear a subrange of the buffer object with copies of the supplied data.
703 * If data is NULL the buffer is filled with zeros.
705 * This is the default callback for \c dd_function_table::ClearBufferSubData()
706 * Note that all GL error checking will have been done already.
708 * \param ctx GL context.
709 * \param offset Offset of the first byte to be cleared.
710 * \param size Size, in bytes, of the to be cleared range.
711 * \param clearValue Source of the data.
712 * \param clearValueSize Size, in bytes, of the supplied data.
713 * \param bufObj Object to be cleared.
715 * \sa glClearBufferSubData, glClearBufferData and
716 * dd_function_table::ClearBufferSubData.
719 _mesa_ClearBufferSubData_sw(struct gl_context
*ctx
,
720 GLintptr offset
, GLsizeiptr size
,
721 const GLvoid
*clearValue
,
722 GLsizeiptr clearValueSize
,
723 struct gl_buffer_object
*bufObj
)
728 assert(ctx
->Driver
.MapBufferRange
);
729 dest
= ctx
->Driver
.MapBufferRange(ctx
, offset
, size
,
731 GL_MAP_INVALIDATE_RANGE_BIT
,
732 bufObj
, MAP_INTERNAL
);
735 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glClearBuffer[Sub]Data");
739 if (clearValue
== NULL
) {
740 /* Clear with zeros, per the spec */
741 memset(dest
, 0, size
);
742 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
746 for (i
= 0; i
< size
/clearValueSize
; ++i
) {
747 memcpy(dest
, clearValue
, clearValueSize
);
748 dest
+= clearValueSize
;
751 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
756 * Default fallback for \c dd_function_table::MapBufferRange().
757 * Called via glMapBufferRange().
760 map_buffer_range_fallback(struct gl_context
*ctx
, GLintptr offset
,
761 GLsizeiptr length
, GLbitfield access
,
762 struct gl_buffer_object
*bufObj
,
763 gl_map_buffer_index index
)
766 assert(!_mesa_bufferobj_mapped(bufObj
, index
));
767 /* Just return a direct pointer to the data */
768 bufObj
->Mappings
[index
].Pointer
= bufObj
->Data
+ offset
;
769 bufObj
->Mappings
[index
].Length
= length
;
770 bufObj
->Mappings
[index
].Offset
= offset
;
771 bufObj
->Mappings
[index
].AccessFlags
= access
;
772 return bufObj
->Mappings
[index
].Pointer
;
777 * Default fallback for \c dd_function_table::FlushMappedBufferRange().
778 * Called via glFlushMappedBufferRange().
781 flush_mapped_buffer_range_fallback(struct gl_context
*ctx
,
782 GLintptr offset
, GLsizeiptr length
,
783 struct gl_buffer_object
*obj
,
784 gl_map_buffer_index index
)
796 * Default callback for \c dd_function_table::UnmapBuffer().
798 * The input parameters will have been already tested for errors.
800 * \sa glUnmapBufferARB, dd_function_table::UnmapBuffer
803 unmap_buffer_fallback(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
804 gl_map_buffer_index index
)
807 /* XXX we might assert here that bufObj->Pointer is non-null */
808 bufObj
->Mappings
[index
].Pointer
= NULL
;
809 bufObj
->Mappings
[index
].Length
= 0;
810 bufObj
->Mappings
[index
].Offset
= 0;
811 bufObj
->Mappings
[index
].AccessFlags
= 0x0;
817 * Default fallback for \c dd_function_table::CopyBufferSubData().
818 * Called via glCopyBufferSubData().
821 copy_buffer_sub_data_fallback(struct gl_context
*ctx
,
822 struct gl_buffer_object
*src
,
823 struct gl_buffer_object
*dst
,
824 GLintptr readOffset
, GLintptr writeOffset
,
827 GLubyte
*srcPtr
, *dstPtr
;
830 srcPtr
= dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, 0, src
->Size
,
832 GL_MAP_WRITE_BIT
, src
,
838 srcPtr
+= readOffset
;
839 dstPtr
+= writeOffset
;
841 srcPtr
= ctx
->Driver
.MapBufferRange(ctx
, readOffset
, size
,
842 GL_MAP_READ_BIT
, src
,
844 dstPtr
= ctx
->Driver
.MapBufferRange(ctx
, writeOffset
, size
,
846 GL_MAP_INVALIDATE_RANGE_BIT
), dst
,
850 /* Note: the src and dst regions will never overlap. Trying to do so
851 * would generate GL_INVALID_VALUE earlier.
853 if (srcPtr
&& dstPtr
)
854 memcpy(dstPtr
, srcPtr
, size
);
856 ctx
->Driver
.UnmapBuffer(ctx
, src
, MAP_INTERNAL
);
858 ctx
->Driver
.UnmapBuffer(ctx
, dst
, MAP_INTERNAL
);
864 * Initialize the state associated with buffer objects
867 _mesa_init_buffer_objects( struct gl_context
*ctx
)
871 memset(&DummyBufferObject
, 0, sizeof(DummyBufferObject
));
872 mtx_init(&DummyBufferObject
.Mutex
, mtx_plain
);
873 DummyBufferObject
.RefCount
= 1000*1000*1000; /* never delete */
875 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
,
876 ctx
->Shared
->NullBufferObj
);
878 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
,
879 ctx
->Shared
->NullBufferObj
);
880 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
,
881 ctx
->Shared
->NullBufferObj
);
883 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
,
884 ctx
->Shared
->NullBufferObj
);
886 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
,
887 ctx
->Shared
->NullBufferObj
);
889 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
,
890 ctx
->Shared
->NullBufferObj
);
892 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
,
893 ctx
->Shared
->NullBufferObj
);
895 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
,
896 ctx
->Shared
->NullBufferObj
);
898 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
,
899 ctx
->Shared
->NullBufferObj
);
901 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
,
902 ctx
->Shared
->NullBufferObj
);
904 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
905 _mesa_reference_buffer_object(ctx
,
906 &ctx
->UniformBufferBindings
[i
].BufferObject
,
907 ctx
->Shared
->NullBufferObj
);
908 ctx
->UniformBufferBindings
[i
].Offset
= -1;
909 ctx
->UniformBufferBindings
[i
].Size
= -1;
912 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
913 _mesa_reference_buffer_object(ctx
,
914 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
915 ctx
->Shared
->NullBufferObj
);
916 ctx
->ShaderStorageBufferBindings
[i
].Offset
= -1;
917 ctx
->ShaderStorageBufferBindings
[i
].Size
= -1;
920 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
921 _mesa_reference_buffer_object(ctx
,
922 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
923 ctx
->Shared
->NullBufferObj
);
924 ctx
->AtomicBufferBindings
[i
].Offset
= 0;
925 ctx
->AtomicBufferBindings
[i
].Size
= 0;
931 _mesa_free_buffer_objects( struct gl_context
*ctx
)
935 _mesa_reference_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, NULL
);
937 _mesa_reference_buffer_object(ctx
, &ctx
->CopyReadBuffer
, NULL
);
938 _mesa_reference_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, NULL
);
940 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, NULL
);
942 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, NULL
);
944 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, NULL
);
946 _mesa_reference_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, NULL
);
948 _mesa_reference_buffer_object(ctx
, &ctx
->ParameterBuffer
, NULL
);
950 _mesa_reference_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, NULL
);
952 _mesa_reference_buffer_object(ctx
, &ctx
->QueryBuffer
, NULL
);
954 for (i
= 0; i
< MAX_COMBINED_UNIFORM_BUFFERS
; i
++) {
955 _mesa_reference_buffer_object(ctx
,
956 &ctx
->UniformBufferBindings
[i
].BufferObject
,
960 for (i
= 0; i
< MAX_COMBINED_SHADER_STORAGE_BUFFERS
; i
++) {
961 _mesa_reference_buffer_object(ctx
,
962 &ctx
->ShaderStorageBufferBindings
[i
].BufferObject
,
966 for (i
= 0; i
< MAX_COMBINED_ATOMIC_BUFFERS
; i
++) {
967 _mesa_reference_buffer_object(ctx
,
968 &ctx
->AtomicBufferBindings
[i
].BufferObject
,
975 _mesa_handle_bind_buffer_gen(struct gl_context
*ctx
,
977 struct gl_buffer_object
**buf_handle
,
980 struct gl_buffer_object
*buf
= *buf_handle
;
982 if (!buf
&& (ctx
->API
== API_OPENGL_CORE
)) {
983 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(non-gen name)", caller
);
987 if (!buf
|| buf
== &DummyBufferObject
) {
988 /* If this is a new buffer object id, or one which was generated but
989 * never used before, allocate a buffer object now.
991 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffer
);
993 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", caller
);
996 _mesa_HashInsert(ctx
->Shared
->BufferObjects
, buffer
, buf
);
1004 * Bind the specified target to buffer for the specified context.
1005 * Called by glBindBuffer() and other functions.
1008 bind_buffer_object(struct gl_context
*ctx
,
1009 struct gl_buffer_object
**bindTarget
, GLuint buffer
)
1011 struct gl_buffer_object
*oldBufObj
;
1012 struct gl_buffer_object
*newBufObj
= NULL
;
1016 /* Get pointer to old buffer object (to be unbound) */
1017 oldBufObj
= *bindTarget
;
1018 if (oldBufObj
&& oldBufObj
->Name
== buffer
&& !oldBufObj
->DeletePending
)
1019 return; /* rebinding the same buffer object- no change */
1022 * Get pointer to new buffer object (newBufObj)
1025 /* The spec says there's not a buffer object named 0, but we use
1026 * one internally because it simplifies things.
1028 newBufObj
= ctx
->Shared
->NullBufferObj
;
1031 /* non-default buffer object */
1032 newBufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1033 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
1034 &newBufObj
, "glBindBuffer"))
1038 /* record usage history */
1039 if (bindTarget
== &ctx
->Pack
.BufferObj
) {
1040 newBufObj
->UsageHistory
|= USAGE_PIXEL_PACK_BUFFER
;
1043 /* bind new buffer */
1044 _mesa_reference_buffer_object(ctx
, bindTarget
, newBufObj
);
1049 * Update the default buffer objects in the given context to reference those
1050 * specified in the shared state and release those referencing the old
1054 _mesa_update_default_objects_buffer_objects(struct gl_context
*ctx
)
1056 /* Bind the NullBufferObj to remove references to those
1057 * in the shared context hash table.
1059 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1060 bind_buffer_object(ctx
, &ctx
->Array
.VAO
->IndexBufferObj
, 0);
1061 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1062 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1068 * Return the gl_buffer_object for the given ID.
1069 * Always return NULL for ID 0.
1071 struct gl_buffer_object
*
1072 _mesa_lookup_bufferobj(struct gl_context
*ctx
, GLuint buffer
)
1077 return (struct gl_buffer_object
*)
1078 _mesa_HashLookup(ctx
->Shared
->BufferObjects
, buffer
);
1082 struct gl_buffer_object
*
1083 _mesa_lookup_bufferobj_locked(struct gl_context
*ctx
, GLuint buffer
)
1088 return (struct gl_buffer_object
*)
1089 _mesa_HashLookupLocked(ctx
->Shared
->BufferObjects
, buffer
);
1093 * A convenience function for direct state access functions that throws
1094 * GL_INVALID_OPERATION if buffer is not the name of an existing
1097 struct gl_buffer_object
*
1098 _mesa_lookup_bufferobj_err(struct gl_context
*ctx
, GLuint buffer
,
1101 struct gl_buffer_object
*bufObj
;
1103 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1104 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
1105 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1106 "%s(non-existent buffer object %u)", caller
, buffer
);
1115 * Look up a buffer object for a multi-bind function.
1117 * Unlike _mesa_lookup_bufferobj(), this function also takes care
1118 * of generating an error if the buffer ID is not zero or the name
1119 * of an existing buffer object.
1121 * If the buffer ID refers to an existing buffer object, a pointer
1122 * to the buffer object is returned. If the ID is zero, a pointer
1123 * to the shared NullBufferObj is returned. If the ID is not zero
1124 * and does not refer to a valid buffer object, this function
1127 * This function assumes that the caller has already locked the
1128 * hash table mutex by calling
1129 * _mesa_HashLockMutex(ctx->Shared->BufferObjects).
1131 struct gl_buffer_object
*
1132 _mesa_multi_bind_lookup_bufferobj(struct gl_context
*ctx
,
1133 const GLuint
*buffers
,
1134 GLuint index
, const char *caller
)
1136 struct gl_buffer_object
*bufObj
;
1138 if (buffers
[index
] != 0) {
1139 bufObj
= _mesa_lookup_bufferobj_locked(ctx
, buffers
[index
]);
1141 /* The multi-bind functions don't create the buffer objects
1142 when they don't exist. */
1143 if (bufObj
== &DummyBufferObject
)
1146 bufObj
= ctx
->Shared
->NullBufferObj
;
1149 /* The ARB_multi_bind spec says:
1151 * "An INVALID_OPERATION error is generated if any value
1152 * in <buffers> is not zero or the name of an existing
1153 * buffer object (per binding)."
1155 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1156 "%s(buffers[%u]=%u is not zero or the name "
1157 "of an existing buffer object)",
1158 caller
, index
, buffers
[index
]);
1166 * If *ptr points to obj, set ptr = the Null/default buffer object.
1167 * This is a helper for buffer object deletion.
1168 * The GL spec says that deleting a buffer object causes it to get
1169 * unbound from all arrays in the current context.
1172 unbind(struct gl_context
*ctx
,
1173 struct gl_vertex_array_object
*vao
, unsigned index
,
1174 struct gl_buffer_object
*obj
)
1176 if (vao
->BufferBinding
[index
].BufferObj
== obj
) {
1177 _mesa_bind_vertex_buffer(ctx
, vao
, index
, ctx
->Shared
->NullBufferObj
,
1178 vao
->BufferBinding
[index
].Offset
,
1179 vao
->BufferBinding
[index
].Stride
);
1185 * Plug default/fallback buffer object functions into the device
1189 _mesa_init_buffer_object_functions(struct dd_function_table
*driver
)
1191 /* GL_ARB_vertex/pixel_buffer_object */
1192 driver
->NewBufferObject
= _mesa_new_buffer_object
;
1193 driver
->DeleteBuffer
= _mesa_delete_buffer_object
;
1194 driver
->BufferData
= buffer_data_fallback
;
1195 driver
->BufferSubData
= buffer_sub_data_fallback
;
1196 driver
->GetBufferSubData
= buffer_get_subdata
;
1197 driver
->UnmapBuffer
= unmap_buffer_fallback
;
1199 /* GL_ARB_clear_buffer_object */
1200 driver
->ClearBufferSubData
= _mesa_ClearBufferSubData_sw
;
1202 /* GL_ARB_map_buffer_range */
1203 driver
->MapBufferRange
= map_buffer_range_fallback
;
1204 driver
->FlushMappedBufferRange
= flush_mapped_buffer_range_fallback
;
1206 /* GL_ARB_copy_buffer */
1207 driver
->CopyBufferSubData
= copy_buffer_sub_data_fallback
;
1212 _mesa_buffer_unmap_all_mappings(struct gl_context
*ctx
,
1213 struct gl_buffer_object
*bufObj
)
1215 for (int i
= 0; i
< MAP_COUNT
; i
++) {
1216 if (_mesa_bufferobj_mapped(bufObj
, i
)) {
1217 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, i
);
1218 assert(bufObj
->Mappings
[i
].Pointer
== NULL
);
1219 bufObj
->Mappings
[i
].AccessFlags
= 0;
1225 /**********************************************************************/
1227 /**********************************************************************/
1230 _mesa_BindBuffer_no_error(GLenum target
, GLuint buffer
)
1232 GET_CURRENT_CONTEXT(ctx
);
1234 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1235 bind_buffer_object(ctx
, bindTarget
, buffer
);
1240 _mesa_BindBuffer(GLenum target
, GLuint buffer
)
1242 GET_CURRENT_CONTEXT(ctx
);
1244 if (MESA_VERBOSE
& VERBOSE_API
) {
1245 _mesa_debug(ctx
, "glBindBuffer(%s, %u)\n",
1246 _mesa_enum_to_string(target
), buffer
);
1249 struct gl_buffer_object
**bindTarget
= get_buffer_target(ctx
, target
);
1251 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferARB(target %s)",
1252 _mesa_enum_to_string(target
));
1256 bind_buffer_object(ctx
, bindTarget
, buffer
);
1260 * Binds a buffer object to an atomic buffer binding point.
1262 * The caller is responsible for validating the offset,
1263 * flushing the vertices and updating NewDriverState.
1266 set_atomic_buffer_binding(struct gl_context
*ctx
,
1267 struct gl_atomic_buffer_binding
*binding
,
1268 struct gl_buffer_object
*bufObj
,
1272 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1274 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
1275 binding
->Offset
= 0;
1278 binding
->Offset
= offset
;
1279 binding
->Size
= size
;
1280 bufObj
->UsageHistory
|= USAGE_ATOMIC_COUNTER_BUFFER
;
1285 * Binds a buffer object to a uniform buffer binding point.
1287 * The caller is responsible for flushing vertices and updating
1291 set_ubo_binding(struct gl_context
*ctx
,
1292 struct gl_uniform_buffer_binding
*binding
,
1293 struct gl_buffer_object
*bufObj
,
1298 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1300 binding
->Offset
= offset
;
1301 binding
->Size
= size
;
1302 binding
->AutomaticSize
= autoSize
;
1304 /* If this is a real buffer object, mark it has having been used
1305 * at some point as a UBO.
1308 bufObj
->UsageHistory
|= USAGE_UNIFORM_BUFFER
;
1312 * Binds a buffer object to a shader storage buffer binding point.
1314 * The caller is responsible for flushing vertices and updating
1318 set_ssbo_binding(struct gl_context
*ctx
,
1319 struct gl_shader_storage_buffer_binding
*binding
,
1320 struct gl_buffer_object
*bufObj
,
1325 _mesa_reference_buffer_object(ctx
, &binding
->BufferObject
, bufObj
);
1327 binding
->Offset
= offset
;
1328 binding
->Size
= size
;
1329 binding
->AutomaticSize
= autoSize
;
1331 /* If this is a real buffer object, mark it has having been used
1332 * at some point as a SSBO.
1335 bufObj
->UsageHistory
|= USAGE_SHADER_STORAGE_BUFFER
;
1339 * Binds a buffer object to a uniform buffer binding point.
1341 * Unlike set_ubo_binding(), this function also flushes vertices
1342 * and updates NewDriverState. It also checks if the binding
1343 * has actually changed before updating it.
1346 bind_uniform_buffer(struct gl_context
*ctx
,
1348 struct gl_buffer_object
*bufObj
,
1353 struct gl_uniform_buffer_binding
*binding
=
1354 &ctx
->UniformBufferBindings
[index
];
1356 if (binding
->BufferObject
== bufObj
&&
1357 binding
->Offset
== offset
&&
1358 binding
->Size
== size
&&
1359 binding
->AutomaticSize
== autoSize
) {
1363 FLUSH_VERTICES(ctx
, 0);
1364 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
1366 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
1370 * Binds a buffer object to a shader storage buffer binding point.
1372 * Unlike set_ssbo_binding(), this function also flushes vertices
1373 * and updates NewDriverState. It also checks if the binding
1374 * has actually changed before updating it.
1377 bind_shader_storage_buffer(struct gl_context
*ctx
,
1379 struct gl_buffer_object
*bufObj
,
1384 struct gl_shader_storage_buffer_binding
*binding
=
1385 &ctx
->ShaderStorageBufferBindings
[index
];
1387 if (binding
->BufferObject
== bufObj
&&
1388 binding
->Offset
== offset
&&
1389 binding
->Size
== size
&&
1390 binding
->AutomaticSize
== autoSize
) {
1394 FLUSH_VERTICES(ctx
, 0);
1395 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
1397 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, autoSize
);
1401 * Bind a buffer object to a uniform block binding point.
1402 * As above, but offset = 0.
1405 bind_buffer_base_uniform_buffer(struct gl_context
*ctx
,
1407 struct gl_buffer_object
*bufObj
)
1409 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
1410 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1414 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
1416 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1417 bind_uniform_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1419 bind_uniform_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1423 * Bind a buffer object to a shader storage block binding point.
1424 * As above, but offset = 0.
1427 bind_buffer_base_shader_storage_buffer(struct gl_context
*ctx
,
1429 struct gl_buffer_object
*bufObj
)
1431 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
1432 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferBase(index=%d)", index
);
1436 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
1438 if (bufObj
== ctx
->Shared
->NullBufferObj
)
1439 bind_shader_storage_buffer(ctx
, index
, bufObj
, -1, -1, GL_TRUE
);
1441 bind_shader_storage_buffer(ctx
, index
, bufObj
, 0, 0, GL_TRUE
);
1445 bind_atomic_buffer(struct gl_context
*ctx
, unsigned index
,
1446 struct gl_buffer_object
*bufObj
, GLintptr offset
,
1449 _mesa_reference_buffer_object(ctx
, &ctx
->AtomicBuffer
, bufObj
);
1451 struct gl_atomic_buffer_binding
*binding
=
1452 &ctx
->AtomicBufferBindings
[index
];
1453 if (binding
->BufferObject
== bufObj
&&
1454 binding
->Offset
== offset
&&
1455 binding
->Size
== size
) {
1459 FLUSH_VERTICES(ctx
, 0);
1460 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
1462 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
1466 * Delete a set of buffer objects.
1468 * \param n Number of buffer objects to delete.
1469 * \param ids Array of \c n buffer object IDs.
1472 delete_buffers(struct gl_context
*ctx
, GLsizei n
, const GLuint
*ids
)
1474 FLUSH_VERTICES(ctx
, 0);
1476 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1478 for (GLsizei i
= 0; i
< n
; i
++) {
1479 struct gl_buffer_object
*bufObj
=
1480 _mesa_lookup_bufferobj_locked(ctx
, ids
[i
]);
1482 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
1485 assert(bufObj
->Name
== ids
[i
] || bufObj
== &DummyBufferObject
);
1487 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1489 /* unbind any vertex pointers bound to this buffer */
1490 for (j
= 0; j
< ARRAY_SIZE(vao
->BufferBinding
); j
++) {
1491 unbind(ctx
, vao
, j
, bufObj
);
1494 if (ctx
->Array
.ArrayBufferObj
== bufObj
) {
1495 bind_buffer_object(ctx
, &ctx
->Array
.ArrayBufferObj
, 0);
1497 if (vao
->IndexBufferObj
== bufObj
) {
1498 bind_buffer_object(ctx
, &vao
->IndexBufferObj
, 0);
1501 /* unbind ARB_draw_indirect binding point */
1502 if (ctx
->DrawIndirectBuffer
== bufObj
) {
1503 bind_buffer_object(ctx
, &ctx
->DrawIndirectBuffer
, 0);
1506 /* unbind ARB_indirect_parameters binding point */
1507 if (ctx
->ParameterBuffer
== bufObj
) {
1508 bind_buffer_object(ctx
, &ctx
->ParameterBuffer
, 0);
1511 /* unbind ARB_compute_shader binding point */
1512 if (ctx
->DispatchIndirectBuffer
== bufObj
) {
1513 bind_buffer_object(ctx
, &ctx
->DispatchIndirectBuffer
, 0);
1516 /* unbind ARB_copy_buffer binding points */
1517 if (ctx
->CopyReadBuffer
== bufObj
) {
1518 bind_buffer_object(ctx
, &ctx
->CopyReadBuffer
, 0);
1520 if (ctx
->CopyWriteBuffer
== bufObj
) {
1521 bind_buffer_object(ctx
, &ctx
->CopyWriteBuffer
, 0);
1524 /* unbind transform feedback binding points */
1525 if (ctx
->TransformFeedback
.CurrentBuffer
== bufObj
) {
1526 bind_buffer_object(ctx
, &ctx
->TransformFeedback
.CurrentBuffer
, 0);
1528 for (j
= 0; j
< MAX_FEEDBACK_BUFFERS
; j
++) {
1529 if (ctx
->TransformFeedback
.CurrentObject
->Buffers
[j
] == bufObj
) {
1530 _mesa_bind_buffer_base_transform_feedback(ctx
,
1531 ctx
->TransformFeedback
.CurrentObject
,
1532 j
, ctx
->Shared
->NullBufferObj
,
1537 /* unbind UBO binding points */
1538 for (j
= 0; j
< ctx
->Const
.MaxUniformBufferBindings
; j
++) {
1539 if (ctx
->UniformBufferBindings
[j
].BufferObject
== bufObj
) {
1540 bind_buffer_base_uniform_buffer(ctx
, j
,
1541 ctx
->Shared
->NullBufferObj
);
1545 if (ctx
->UniformBuffer
== bufObj
) {
1546 bind_buffer_object(ctx
, &ctx
->UniformBuffer
, 0);
1549 /* unbind SSBO binding points */
1550 for (j
= 0; j
< ctx
->Const
.MaxShaderStorageBufferBindings
; j
++) {
1551 if (ctx
->ShaderStorageBufferBindings
[j
].BufferObject
== bufObj
) {
1552 bind_buffer_base_shader_storage_buffer(ctx
, j
,
1553 ctx
->Shared
->NullBufferObj
);
1557 if (ctx
->ShaderStorageBuffer
== bufObj
) {
1558 bind_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, 0);
1561 /* unbind Atomci Buffer binding points */
1562 for (j
= 0; j
< ctx
->Const
.MaxAtomicBufferBindings
; j
++) {
1563 if (ctx
->AtomicBufferBindings
[j
].BufferObject
== bufObj
) {
1564 _mesa_BindBufferBase( GL_ATOMIC_COUNTER_BUFFER
, j
, 0 );
1565 bind_atomic_buffer(ctx
, j
, ctx
->Shared
->NullBufferObj
, 0, 0);
1569 if (ctx
->AtomicBuffer
== bufObj
) {
1570 bind_buffer_object(ctx
, &ctx
->AtomicBuffer
, 0);
1573 /* unbind any pixel pack/unpack pointers bound to this buffer */
1574 if (ctx
->Pack
.BufferObj
== bufObj
) {
1575 bind_buffer_object(ctx
, &ctx
->Pack
.BufferObj
, 0);
1577 if (ctx
->Unpack
.BufferObj
== bufObj
) {
1578 bind_buffer_object(ctx
, &ctx
->Unpack
.BufferObj
, 0);
1581 if (ctx
->Texture
.BufferObject
== bufObj
) {
1582 bind_buffer_object(ctx
, &ctx
->Texture
.BufferObject
, 0);
1585 if (ctx
->ExternalVirtualMemoryBuffer
== bufObj
) {
1586 bind_buffer_object(ctx
, &ctx
->ExternalVirtualMemoryBuffer
, 0);
1589 /* unbind query buffer binding point */
1590 if (ctx
->QueryBuffer
== bufObj
) {
1591 bind_buffer_object(ctx
, &ctx
->QueryBuffer
, 0);
1594 /* The ID is immediately freed for re-use */
1595 _mesa_HashRemoveLocked(ctx
->Shared
->BufferObjects
, ids
[i
]);
1596 /* Make sure we do not run into the classic ABA problem on bind.
1597 * We don't want to allow re-binding a buffer object that's been
1598 * "deleted" by glDeleteBuffers().
1600 * The explicit rebinding to the default object in the current context
1601 * prevents the above in the current context, but another context
1602 * sharing the same objects might suffer from this problem.
1603 * The alternative would be to do the hash lookup in any case on bind
1604 * which would introduce more runtime overhead than this.
1606 bufObj
->DeletePending
= GL_TRUE
;
1607 _mesa_reference_buffer_object(ctx
, &bufObj
, NULL
);
1611 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1616 _mesa_DeleteBuffers_no_error(GLsizei n
, const GLuint
*ids
)
1618 GET_CURRENT_CONTEXT(ctx
);
1619 delete_buffers(ctx
, n
, ids
);
1624 _mesa_DeleteBuffers(GLsizei n
, const GLuint
*ids
)
1626 GET_CURRENT_CONTEXT(ctx
);
1629 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteBuffersARB(n)");
1633 delete_buffers(ctx
, n
, ids
);
1638 * This is the implementation for glGenBuffers and glCreateBuffers. It is not
1639 * exposed to the rest of Mesa to encourage the use of nameless buffers in
1643 create_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1646 struct gl_buffer_object
*buf
;
1652 * This must be atomic (generation and allocation of buffer object IDs)
1654 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
1656 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->BufferObjects
, n
);
1658 /* Insert the ID and pointer into the hash table. If non-DSA, insert a
1659 * DummyBufferObject. Otherwise, create a new buffer object and insert
1662 for (int i
= 0; i
< n
; i
++) {
1663 buffers
[i
] = first
+ i
;
1665 assert(ctx
->Driver
.NewBufferObject
);
1666 buf
= ctx
->Driver
.NewBufferObject(ctx
, buffers
[i
]);
1668 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glCreateBuffers");
1669 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1674 buf
= &DummyBufferObject
;
1676 _mesa_HashInsertLocked(ctx
->Shared
->BufferObjects
, buffers
[i
], buf
);
1679 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
1684 create_buffers_err(struct gl_context
*ctx
, GLsizei n
, GLuint
*buffers
, bool dsa
)
1686 const char *func
= dsa
? "glCreateBuffers" : "glGenBuffers";
1688 if (MESA_VERBOSE
& VERBOSE_API
)
1689 _mesa_debug(ctx
, "%s(%d)\n", func
, n
);
1692 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n %d < 0)", func
, n
);
1696 create_buffers(ctx
, n
, buffers
, dsa
);
1700 * Generate a set of unique buffer object IDs and store them in \c buffers.
1702 * \param n Number of IDs to generate.
1703 * \param buffers Array of \c n locations to store the IDs.
1706 _mesa_GenBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1708 GET_CURRENT_CONTEXT(ctx
);
1709 create_buffers(ctx
, n
, buffers
, false);
1714 _mesa_GenBuffers(GLsizei n
, GLuint
*buffers
)
1716 GET_CURRENT_CONTEXT(ctx
);
1717 create_buffers_err(ctx
, n
, buffers
, false);
1721 * Create a set of buffer objects and store their unique IDs in \c buffers.
1723 * \param n Number of IDs to generate.
1724 * \param buffers Array of \c n locations to store the IDs.
1727 _mesa_CreateBuffers_no_error(GLsizei n
, GLuint
*buffers
)
1729 GET_CURRENT_CONTEXT(ctx
);
1730 create_buffers(ctx
, n
, buffers
, true);
1735 _mesa_CreateBuffers(GLsizei n
, GLuint
*buffers
)
1737 GET_CURRENT_CONTEXT(ctx
);
1738 create_buffers_err(ctx
, n
, buffers
, true);
1743 * Determine if ID is the name of a buffer object.
1745 * \param id ID of the potential buffer object.
1746 * \return \c GL_TRUE if \c id is the name of a buffer object,
1747 * \c GL_FALSE otherwise.
1749 GLboolean GLAPIENTRY
1750 _mesa_IsBuffer(GLuint id
)
1752 struct gl_buffer_object
*bufObj
;
1753 GET_CURRENT_CONTEXT(ctx
);
1754 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1756 bufObj
= _mesa_lookup_bufferobj(ctx
, id
);
1758 return bufObj
&& bufObj
!= &DummyBufferObject
;
1763 validate_buffer_storage(struct gl_context
*ctx
,
1764 struct gl_buffer_object
*bufObj
, GLsizeiptr size
,
1765 GLbitfield flags
, const char *func
)
1768 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size <= 0)", func
);
1772 GLbitfield valid_flags
= GL_MAP_READ_BIT
|
1774 GL_MAP_PERSISTENT_BIT
|
1775 GL_MAP_COHERENT_BIT
|
1776 GL_DYNAMIC_STORAGE_BIT
|
1777 GL_CLIENT_STORAGE_BIT
;
1779 if (ctx
->Extensions
.ARB_sparse_buffer
)
1780 valid_flags
|= GL_SPARSE_STORAGE_BIT_ARB
;
1782 if (flags
& ~valid_flags
) {
1783 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid flag bits set)", func
);
1787 /* The Errors section of the GL_ARB_sparse_buffer spec says:
1789 * "INVALID_VALUE is generated by BufferStorage if <flags> contains
1790 * SPARSE_STORAGE_BIT_ARB and <flags> also contains any combination of
1791 * MAP_READ_BIT or MAP_WRITE_BIT."
1793 if (flags
& GL_SPARSE_STORAGE_BIT_ARB
&&
1794 flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) {
1795 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(SPARSE_STORAGE and READ/WRITE)", func
);
1799 if (flags
& GL_MAP_PERSISTENT_BIT
&&
1800 !(flags
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
))) {
1801 _mesa_error(ctx
, GL_INVALID_VALUE
,
1802 "%s(PERSISTENT and flags!=READ/WRITE)", func
);
1806 if (flags
& GL_MAP_COHERENT_BIT
&& !(flags
& GL_MAP_PERSISTENT_BIT
)) {
1807 _mesa_error(ctx
, GL_INVALID_VALUE
,
1808 "%s(COHERENT and flags!=PERSISTENT)", func
);
1812 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1813 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1822 buffer_storage(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1823 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1824 GLbitfield flags
, const char *func
)
1826 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1827 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1829 FLUSH_VERTICES(ctx
, 0);
1831 bufObj
->Written
= GL_TRUE
;
1832 bufObj
->Immutable
= GL_TRUE
;
1833 bufObj
->MinMaxCacheDirty
= true;
1835 assert(ctx
->Driver
.BufferData
);
1836 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, GL_DYNAMIC_DRAW
,
1838 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
1839 /* Even though the interaction between AMD_pinned_memory and
1840 * glBufferStorage is not described in the spec, Graham Sellers
1841 * said that it should behave the same as glBufferData.
1843 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1846 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1852 static ALWAYS_INLINE
void
1853 inlined_buffer_storage(GLenum target
, GLuint buffer
, GLsizeiptr size
,
1854 const GLvoid
*data
, GLbitfield flags
, bool dsa
,
1855 bool no_error
, const char *func
)
1857 GET_CURRENT_CONTEXT(ctx
);
1858 struct gl_buffer_object
*bufObj
;
1862 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
1864 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
1870 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
1871 bufObj
= *bufObjPtr
;
1873 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
1879 if (no_error
|| validate_buffer_storage(ctx
, bufObj
, size
, flags
, func
))
1880 buffer_storage(ctx
, bufObj
, target
, size
, data
, flags
, func
);
1885 _mesa_BufferStorage_no_error(GLenum target
, GLsizeiptr size
,
1886 const GLvoid
*data
, GLbitfield flags
)
1888 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, true,
1894 _mesa_BufferStorage(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
1897 inlined_buffer_storage(target
, 0, size
, data
, flags
, false, false,
1903 _mesa_NamedBufferStorage_no_error(GLuint buffer
, GLsizeiptr size
,
1904 const GLvoid
*data
, GLbitfield flags
)
1906 /* In direct state access, buffer objects have an unspecified target
1907 * since they are not required to be bound.
1909 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, true,
1910 "glNamedBufferStorage");
1915 _mesa_NamedBufferStorage(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
1918 /* In direct state access, buffer objects have an unspecified target
1919 * since they are not required to be bound.
1921 inlined_buffer_storage(GL_NONE
, buffer
, size
, data
, flags
, true, false,
1922 "glNamedBufferStorage");
1926 static ALWAYS_INLINE
void
1927 buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
1928 GLenum target
, GLsizeiptr size
, const GLvoid
*data
, GLenum usage
,
1929 const char *func
, bool no_error
)
1933 if (MESA_VERBOSE
& VERBOSE_API
) {
1934 _mesa_debug(ctx
, "%s(%s, %ld, %p, %s)\n",
1936 _mesa_enum_to_string(target
),
1937 (long int) size
, data
,
1938 _mesa_enum_to_string(usage
));
1943 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size < 0)", func
);
1948 case GL_STREAM_DRAW_ARB
:
1949 valid_usage
= (ctx
->API
!= API_OPENGLES
);
1951 case GL_STATIC_DRAW_ARB
:
1952 case GL_DYNAMIC_DRAW_ARB
:
1955 case GL_STREAM_READ_ARB
:
1956 case GL_STREAM_COPY_ARB
:
1957 case GL_STATIC_READ_ARB
:
1958 case GL_STATIC_COPY_ARB
:
1959 case GL_DYNAMIC_READ_ARB
:
1960 case GL_DYNAMIC_COPY_ARB
:
1961 valid_usage
= _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
);
1964 valid_usage
= false;
1969 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid usage: %s)", func
,
1970 _mesa_enum_to_string(usage
));
1974 if (bufObj
->Immutable
|| bufObj
->HandleAllocated
) {
1975 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(immutable)", func
);
1980 /* Unmap the existing buffer. We'll replace it now. Not an error. */
1981 _mesa_buffer_unmap_all_mappings(ctx
, bufObj
);
1983 FLUSH_VERTICES(ctx
, 0);
1985 bufObj
->Written
= GL_TRUE
;
1986 bufObj
->MinMaxCacheDirty
= true;
1989 printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
1990 bufObj
->Name
, size
, data
, usage
);
1997 assert(ctx
->Driver
.BufferData
);
1998 if (!ctx
->Driver
.BufferData(ctx
, target
, size
, data
, usage
,
2001 GL_DYNAMIC_STORAGE_BIT
,
2003 if (target
== GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD
) {
2005 /* From GL_AMD_pinned_memory:
2007 * INVALID_OPERATION is generated by BufferData if <target> is
2008 * EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, and the store cannot be
2009 * mapped to the GPU address space.
2011 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2014 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2020 buffer_data_error(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2021 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2022 GLenum usage
, const char *func
)
2024 buffer_data(ctx
, bufObj
, target
, size
, data
, usage
, func
, false);
2028 buffer_data_no_error(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2029 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2030 GLenum usage
, const char *func
)
2032 buffer_data(ctx
, bufObj
, target
, size
, data
, usage
, func
, true);
2036 _mesa_buffer_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2037 GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2038 GLenum usage
, const char *func
)
2040 buffer_data_error(ctx
, bufObj
, target
, size
, data
, usage
, func
);
2044 _mesa_BufferData_no_error(GLenum target
, GLsizeiptr size
, const GLvoid
*data
,
2047 GET_CURRENT_CONTEXT(ctx
);
2049 struct gl_buffer_object
**bufObj
= get_buffer_target(ctx
, target
);
2050 buffer_data_no_error(ctx
, *bufObj
, target
, size
, data
, usage
,
2055 _mesa_BufferData(GLenum target
, GLsizeiptr size
,
2056 const GLvoid
*data
, GLenum usage
)
2058 GET_CURRENT_CONTEXT(ctx
);
2059 struct gl_buffer_object
*bufObj
;
2061 bufObj
= get_buffer(ctx
, "glBufferData", target
, GL_INVALID_OPERATION
);
2065 _mesa_buffer_data(ctx
, bufObj
, target
, size
, data
, usage
,
2070 _mesa_NamedBufferData_no_error(GLuint buffer
, GLsizeiptr size
,
2071 const GLvoid
*data
, GLenum usage
)
2073 GET_CURRENT_CONTEXT(ctx
);
2075 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2076 buffer_data_no_error(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2077 "glNamedBufferData");
2081 _mesa_NamedBufferData(GLuint buffer
, GLsizeiptr size
, const GLvoid
*data
,
2084 GET_CURRENT_CONTEXT(ctx
);
2085 struct gl_buffer_object
*bufObj
;
2087 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glNamedBufferData");
2091 /* In direct state access, buffer objects have an unspecified target since
2092 * they are not required to be bound.
2094 _mesa_buffer_data(ctx
, bufObj
, GL_NONE
, size
, data
, usage
,
2095 "glNamedBufferData");
2100 validate_buffer_sub_data(struct gl_context
*ctx
,
2101 struct gl_buffer_object
*bufObj
,
2102 GLintptr offset
, GLsizeiptr size
,
2105 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2107 /* error already recorded */
2111 if (bufObj
->Immutable
&&
2112 !(bufObj
->StorageFlags
& GL_DYNAMIC_STORAGE_BIT
)) {
2113 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
2117 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2118 bufObj
->Usage
== GL_STATIC_COPY
) &&
2119 bufObj
->NumSubDataCalls
>= BUFFER_WARNING_CALL_COUNT
- 1) {
2120 /* If the application declared the buffer as static draw/copy or stream
2121 * draw, it should not be frequently modified with glBufferSubData.
2123 BUFFER_USAGE_WARNING(ctx
,
2124 "using %s(buffer %u, offset %u, size %u) to "
2125 "update a %s buffer",
2126 func
, bufObj
->Name
, offset
, size
,
2127 _mesa_enum_to_string(bufObj
->Usage
));
2135 * Implementation for glBufferSubData and glNamedBufferSubData.
2137 * \param ctx GL context.
2138 * \param bufObj The buffer object.
2139 * \param offset Offset of the first byte of the subdata range.
2140 * \param size Size, in bytes, of the subdata range.
2141 * \param data The data store.
2142 * \param func Name of calling function for recording errors.
2146 _mesa_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2147 GLintptr offset
, GLsizeiptr size
, const GLvoid
*data
)
2152 bufObj
->NumSubDataCalls
++;
2153 bufObj
->Written
= GL_TRUE
;
2154 bufObj
->MinMaxCacheDirty
= true;
2156 assert(ctx
->Driver
.BufferSubData
);
2157 ctx
->Driver
.BufferSubData(ctx
, offset
, size
, data
, bufObj
);
2161 static ALWAYS_INLINE
void
2162 buffer_sub_data(GLenum target
, GLuint buffer
, GLintptr offset
,
2163 GLsizeiptr size
, const GLvoid
*data
,
2164 bool dsa
, bool no_error
, const char *func
)
2166 GET_CURRENT_CONTEXT(ctx
);
2167 struct gl_buffer_object
*bufObj
;
2171 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2173 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, func
);
2179 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2180 bufObj
= *bufObjPtr
;
2182 bufObj
= get_buffer(ctx
, func
, target
, GL_INVALID_OPERATION
);
2188 if (no_error
|| validate_buffer_sub_data(ctx
, bufObj
, offset
, size
, func
))
2189 _mesa_buffer_sub_data(ctx
, bufObj
, offset
, size
, data
);
2194 _mesa_BufferSubData_no_error(GLenum target
, GLintptr offset
,
2195 GLsizeiptr size
, const GLvoid
*data
)
2197 buffer_sub_data(target
, 0, offset
, size
, data
, false, true,
2203 _mesa_BufferSubData(GLenum target
, GLintptr offset
,
2204 GLsizeiptr size
, const GLvoid
*data
)
2206 buffer_sub_data(target
, 0, offset
, size
, data
, false, false,
2211 _mesa_NamedBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
2212 GLsizeiptr size
, const GLvoid
*data
)
2214 buffer_sub_data(0, buffer
, offset
, size
, data
, true, true,
2215 "glNamedBufferSubData");
2219 _mesa_NamedBufferSubData(GLuint buffer
, GLintptr offset
,
2220 GLsizeiptr size
, const GLvoid
*data
)
2222 buffer_sub_data(0, buffer
, offset
, size
, data
, true, false,
2223 "glNamedBufferSubData");
2228 _mesa_GetBufferSubData(GLenum target
, GLintptr offset
,
2229 GLsizeiptr size
, GLvoid
*data
)
2231 GET_CURRENT_CONTEXT(ctx
);
2232 struct gl_buffer_object
*bufObj
;
2234 bufObj
= get_buffer(ctx
, "glGetBufferSubData", target
,
2235 GL_INVALID_OPERATION
);
2239 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2240 "glGetBufferSubData")) {
2244 assert(ctx
->Driver
.GetBufferSubData
);
2245 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2249 _mesa_GetNamedBufferSubData(GLuint buffer
, GLintptr offset
,
2250 GLsizeiptr size
, GLvoid
*data
)
2252 GET_CURRENT_CONTEXT(ctx
);
2253 struct gl_buffer_object
*bufObj
;
2255 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2256 "glGetNamedBufferSubData");
2260 if (!buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
, false,
2261 "glGetNamedBufferSubData")) {
2265 assert(ctx
->Driver
.GetBufferSubData
);
2266 ctx
->Driver
.GetBufferSubData(ctx
, offset
, size
, data
, bufObj
);
2271 * \param subdata true if caller is *SubData, false if *Data
2273 static ALWAYS_INLINE
void
2274 clear_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2275 GLenum internalformat
, GLintptr offset
, GLsizeiptr size
,
2276 GLenum format
, GLenum type
, const GLvoid
*data
,
2277 const char *func
, bool subdata
, bool no_error
)
2279 mesa_format mesaFormat
;
2280 GLubyte clearValue
[MAX_PIXEL_BYTES
];
2281 GLsizeiptr clearValueSize
;
2283 /* This checks for disallowed mappings. */
2284 if (!no_error
&& !buffer_object_subdata_range_good(ctx
, bufObj
, offset
, size
,
2290 mesaFormat
= _mesa_get_texbuffer_format(ctx
, internalformat
);
2292 mesaFormat
= validate_clear_buffer_format(ctx
, internalformat
,
2293 format
, type
, func
);
2296 if (mesaFormat
== MESA_FORMAT_NONE
)
2299 clearValueSize
= _mesa_get_format_bytes(mesaFormat
);
2301 (offset
% clearValueSize
!= 0 || size
% clearValueSize
!= 0)) {
2302 _mesa_error(ctx
, GL_INVALID_VALUE
,
2303 "%s(offset or size is not a multiple of "
2304 "internalformat size)", func
);
2308 /* Bail early. Negative size has already been checked. */
2312 bufObj
->MinMaxCacheDirty
= true;
2315 /* clear to zeros, per the spec */
2316 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2317 NULL
, clearValueSize
, bufObj
);
2321 if (!convert_clear_buffer_data(ctx
, mesaFormat
, clearValue
,
2322 format
, type
, data
, func
)) {
2326 ctx
->Driver
.ClearBufferSubData(ctx
, offset
, size
,
2327 clearValue
, clearValueSize
, bufObj
);
2331 clear_buffer_sub_data_error(struct gl_context
*ctx
,
2332 struct gl_buffer_object
*bufObj
,
2333 GLenum internalformat
, GLintptr offset
,
2334 GLsizeiptr size
, GLenum format
, GLenum type
,
2335 const GLvoid
*data
, const char *func
, bool subdata
)
2337 clear_buffer_sub_data(ctx
, bufObj
, internalformat
, offset
, size
, format
,
2338 type
, data
, func
, subdata
, false);
2342 _mesa_ClearBufferData(GLenum target
, GLenum internalformat
, GLenum format
,
2343 GLenum type
, const GLvoid
*data
)
2345 GET_CURRENT_CONTEXT(ctx
);
2346 struct gl_buffer_object
*bufObj
;
2348 bufObj
= get_buffer(ctx
, "glClearBufferData", target
, GL_INVALID_VALUE
);
2352 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2353 format
, type
, data
, "glClearBufferData", false);
2357 _mesa_ClearNamedBufferData(GLuint buffer
, GLenum internalformat
,
2358 GLenum format
, GLenum type
, const GLvoid
*data
)
2360 GET_CURRENT_CONTEXT(ctx
);
2361 struct gl_buffer_object
*bufObj
;
2363 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glClearNamedBufferData");
2367 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, 0, bufObj
->Size
,
2368 format
, type
, data
, "glClearNamedBufferData",
2374 _mesa_ClearBufferSubData(GLenum target
, GLenum internalformat
,
2375 GLintptr offset
, GLsizeiptr size
,
2376 GLenum format
, GLenum type
,
2379 GET_CURRENT_CONTEXT(ctx
);
2380 struct gl_buffer_object
*bufObj
;
2382 bufObj
= get_buffer(ctx
, "glClearBufferSubData", target
, GL_INVALID_VALUE
);
2386 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, offset
, size
,
2387 format
, type
, data
, "glClearBufferSubData",
2392 _mesa_ClearNamedBufferSubData(GLuint buffer
, GLenum internalformat
,
2393 GLintptr offset
, GLsizeiptr size
,
2394 GLenum format
, GLenum type
,
2397 GET_CURRENT_CONTEXT(ctx
);
2398 struct gl_buffer_object
*bufObj
;
2400 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2401 "glClearNamedBufferSubData");
2405 clear_buffer_sub_data_error(ctx
, bufObj
, internalformat
, offset
, size
,
2406 format
, type
, data
, "glClearNamedBufferSubData",
2411 unmap_buffer(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
)
2413 GLboolean status
= ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_USER
);
2414 bufObj
->Mappings
[MAP_USER
].AccessFlags
= 0;
2415 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== NULL
);
2416 assert(bufObj
->Mappings
[MAP_USER
].Offset
== 0);
2417 assert(bufObj
->Mappings
[MAP_USER
].Length
== 0);
2423 validate_and_unmap_buffer(struct gl_context
*ctx
,
2424 struct gl_buffer_object
*bufObj
,
2427 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2429 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2430 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2431 "%s(buffer is not mapped)", func
);
2436 if (bufObj
->Access
!= GL_READ_ONLY_ARB
) {
2437 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
2439 /* check that last 100 bytes are still = magic value */
2440 for (i
= 0; i
< 100; i
++) {
2441 GLuint pos
= bufObj
->Size
- i
- 1;
2442 if (buf
[pos
] != 123) {
2443 _mesa_warning(ctx
, "Out of bounds buffer object write detected"
2444 " at position %d (value = %u)\n",
2452 if (bufObj
->AccessFlags
& GL_MAP_WRITE_BIT
) {
2453 GLuint i
, unchanged
= 0;
2454 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
2456 /* check which bytes changed */
2457 for (i
= 0; i
< bufObj
->Size
- 1; i
++) {
2458 if (b
[i
] == (i
& 0xff) && b
[i
+1] == ((i
+1) & 0xff)) {
2465 printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
2466 bufObj
->Name
, unchanged
, bufObj
->Size
, pos
);
2471 return unmap_buffer(ctx
, bufObj
);
2474 GLboolean GLAPIENTRY
2475 _mesa_UnmapBuffer_no_error(GLenum target
)
2477 GET_CURRENT_CONTEXT(ctx
);
2478 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
2479 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
2481 return unmap_buffer(ctx
, bufObj
);
2484 GLboolean GLAPIENTRY
2485 _mesa_UnmapBuffer(GLenum target
)
2487 GET_CURRENT_CONTEXT(ctx
);
2488 struct gl_buffer_object
*bufObj
;
2490 bufObj
= get_buffer(ctx
, "glUnmapBuffer", target
, GL_INVALID_OPERATION
);
2494 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapBuffer");
2497 GLboolean GLAPIENTRY
2498 _mesa_UnmapNamedBuffer_no_error(GLuint buffer
)
2500 GET_CURRENT_CONTEXT(ctx
);
2501 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
2503 return unmap_buffer(ctx
, bufObj
);
2506 GLboolean GLAPIENTRY
2507 _mesa_UnmapNamedBuffer(GLuint buffer
)
2509 GET_CURRENT_CONTEXT(ctx
);
2510 struct gl_buffer_object
*bufObj
;
2512 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glUnmapNamedBuffer");
2516 return validate_and_unmap_buffer(ctx
, bufObj
, "glUnmapNamedBuffer");
2521 get_buffer_parameter(struct gl_context
*ctx
,
2522 struct gl_buffer_object
*bufObj
, GLenum pname
,
2523 GLint64
*params
, const char *func
)
2526 case GL_BUFFER_SIZE_ARB
:
2527 *params
= bufObj
->Size
;
2529 case GL_BUFFER_USAGE_ARB
:
2530 *params
= bufObj
->Usage
;
2532 case GL_BUFFER_ACCESS_ARB
:
2533 *params
= simplified_access_mode(ctx
,
2534 bufObj
->Mappings
[MAP_USER
].AccessFlags
);
2536 case GL_BUFFER_MAPPED_ARB
:
2537 *params
= _mesa_bufferobj_mapped(bufObj
, MAP_USER
);
2539 case GL_BUFFER_ACCESS_FLAGS
:
2540 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2542 *params
= bufObj
->Mappings
[MAP_USER
].AccessFlags
;
2544 case GL_BUFFER_MAP_OFFSET
:
2545 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2547 *params
= bufObj
->Mappings
[MAP_USER
].Offset
;
2549 case GL_BUFFER_MAP_LENGTH
:
2550 if (!ctx
->Extensions
.ARB_map_buffer_range
)
2552 *params
= bufObj
->Mappings
[MAP_USER
].Length
;
2554 case GL_BUFFER_IMMUTABLE_STORAGE
:
2555 if (!ctx
->Extensions
.ARB_buffer_storage
)
2557 *params
= bufObj
->Immutable
;
2559 case GL_BUFFER_STORAGE_FLAGS
:
2560 if (!ctx
->Extensions
.ARB_buffer_storage
)
2562 *params
= bufObj
->StorageFlags
;
2571 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname: %s)", func
,
2572 _mesa_enum_to_string(pname
));
2577 _mesa_GetBufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2579 GET_CURRENT_CONTEXT(ctx
);
2580 struct gl_buffer_object
*bufObj
;
2583 bufObj
= get_buffer(ctx
, "glGetBufferParameteriv", target
,
2584 GL_INVALID_OPERATION
);
2588 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2589 "glGetBufferParameteriv"))
2590 return; /* Error already recorded. */
2592 *params
= (GLint
) parameter
;
2596 _mesa_GetBufferParameteri64v(GLenum target
, GLenum pname
, GLint64
*params
)
2598 GET_CURRENT_CONTEXT(ctx
);
2599 struct gl_buffer_object
*bufObj
;
2602 bufObj
= get_buffer(ctx
, "glGetBufferParameteri64v", target
,
2603 GL_INVALID_OPERATION
);
2607 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2608 "glGetBufferParameteri64v"))
2609 return; /* Error already recorded. */
2611 *params
= parameter
;
2615 _mesa_GetNamedBufferParameteriv(GLuint buffer
, GLenum pname
, GLint
*params
)
2617 GET_CURRENT_CONTEXT(ctx
);
2618 struct gl_buffer_object
*bufObj
;
2621 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2622 "glGetNamedBufferParameteriv");
2626 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2627 "glGetNamedBufferParameteriv"))
2628 return; /* Error already recorded. */
2630 *params
= (GLint
) parameter
;
2634 _mesa_GetNamedBufferParameteri64v(GLuint buffer
, GLenum pname
,
2637 GET_CURRENT_CONTEXT(ctx
);
2638 struct gl_buffer_object
*bufObj
;
2641 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2642 "glGetNamedBufferParameteri64v");
2646 if (!get_buffer_parameter(ctx
, bufObj
, pname
, ¶meter
,
2647 "glGetNamedBufferParameteri64v"))
2648 return; /* Error already recorded. */
2650 *params
= parameter
;
2655 _mesa_GetBufferPointerv(GLenum target
, GLenum pname
, GLvoid
**params
)
2657 GET_CURRENT_CONTEXT(ctx
);
2658 struct gl_buffer_object
*bufObj
;
2660 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2661 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetBufferPointerv(pname != "
2662 "GL_BUFFER_MAP_POINTER)");
2666 bufObj
= get_buffer(ctx
, "glGetBufferPointerv", target
,
2667 GL_INVALID_OPERATION
);
2671 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2675 _mesa_GetNamedBufferPointerv(GLuint buffer
, GLenum pname
, GLvoid
**params
)
2677 GET_CURRENT_CONTEXT(ctx
);
2678 struct gl_buffer_object
*bufObj
;
2680 if (pname
!= GL_BUFFER_MAP_POINTER
) {
2681 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetNamedBufferPointerv(pname != "
2682 "GL_BUFFER_MAP_POINTER)");
2686 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
2687 "glGetNamedBufferPointerv");
2691 *params
= bufObj
->Mappings
[MAP_USER
].Pointer
;
2696 copy_buffer_sub_data(struct gl_context
*ctx
, struct gl_buffer_object
*src
,
2697 struct gl_buffer_object
*dst
, GLintptr readOffset
,
2698 GLintptr writeOffset
, GLsizeiptr size
, const char *func
)
2700 if (_mesa_check_disallowed_mapping(src
)) {
2701 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2702 "%s(readBuffer is mapped)", func
);
2706 if (_mesa_check_disallowed_mapping(dst
)) {
2707 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2708 "%s(writeBuffer is mapped)", func
);
2712 if (readOffset
< 0) {
2713 _mesa_error(ctx
, GL_INVALID_VALUE
,
2714 "%s(readOffset %d < 0)", func
, (int) readOffset
);
2718 if (writeOffset
< 0) {
2719 _mesa_error(ctx
, GL_INVALID_VALUE
,
2720 "%s(writeOffset %d < 0)", func
, (int) writeOffset
);
2725 _mesa_error(ctx
, GL_INVALID_VALUE
,
2726 "%s(size %d < 0)", func
, (int) size
);
2730 if (readOffset
+ size
> src
->Size
) {
2731 _mesa_error(ctx
, GL_INVALID_VALUE
,
2732 "%s(readOffset %d + size %d > src_buffer_size %d)", func
,
2733 (int) readOffset
, (int) size
, (int) src
->Size
);
2737 if (writeOffset
+ size
> dst
->Size
) {
2738 _mesa_error(ctx
, GL_INVALID_VALUE
,
2739 "%s(writeOffset %d + size %d > dst_buffer_size %d)", func
,
2740 (int) writeOffset
, (int) size
, (int) dst
->Size
);
2745 if (readOffset
+ size
<= writeOffset
) {
2748 else if (writeOffset
+ size
<= readOffset
) {
2752 /* overlapping src/dst is illegal */
2753 _mesa_error(ctx
, GL_INVALID_VALUE
,
2754 "%s(overlapping src/dst)", func
);
2759 dst
->MinMaxCacheDirty
= true;
2761 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
, size
);
2765 _mesa_CopyBufferSubData_no_error(GLenum readTarget
, GLenum writeTarget
,
2766 GLintptr readOffset
, GLintptr writeOffset
,
2769 GET_CURRENT_CONTEXT(ctx
);
2771 struct gl_buffer_object
**src_ptr
= get_buffer_target(ctx
, readTarget
);
2772 struct gl_buffer_object
*src
= *src_ptr
;
2774 struct gl_buffer_object
**dst_ptr
= get_buffer_target(ctx
, writeTarget
);
2775 struct gl_buffer_object
*dst
= *dst_ptr
;
2777 dst
->MinMaxCacheDirty
= true;
2778 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2783 _mesa_CopyBufferSubData(GLenum readTarget
, GLenum writeTarget
,
2784 GLintptr readOffset
, GLintptr writeOffset
,
2787 GET_CURRENT_CONTEXT(ctx
);
2788 struct gl_buffer_object
*src
, *dst
;
2790 src
= get_buffer(ctx
, "glCopyBufferSubData", readTarget
,
2791 GL_INVALID_OPERATION
);
2795 dst
= get_buffer(ctx
, "glCopyBufferSubData", writeTarget
,
2796 GL_INVALID_OPERATION
);
2800 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2801 "glCopyBufferSubData");
2805 _mesa_CopyNamedBufferSubData_no_error(GLuint readBuffer
, GLuint writeBuffer
,
2806 GLintptr readOffset
,
2807 GLintptr writeOffset
, GLsizeiptr size
)
2809 GET_CURRENT_CONTEXT(ctx
);
2811 struct gl_buffer_object
*src
= _mesa_lookup_bufferobj(ctx
, readBuffer
);
2812 struct gl_buffer_object
*dst
= _mesa_lookup_bufferobj(ctx
, writeBuffer
);
2814 dst
->MinMaxCacheDirty
= true;
2815 ctx
->Driver
.CopyBufferSubData(ctx
, src
, dst
, readOffset
, writeOffset
,
2820 _mesa_CopyNamedBufferSubData(GLuint readBuffer
, GLuint writeBuffer
,
2821 GLintptr readOffset
, GLintptr writeOffset
,
2824 GET_CURRENT_CONTEXT(ctx
);
2825 struct gl_buffer_object
*src
, *dst
;
2827 src
= _mesa_lookup_bufferobj_err(ctx
, readBuffer
,
2828 "glCopyNamedBufferSubData");
2832 dst
= _mesa_lookup_bufferobj_err(ctx
, writeBuffer
,
2833 "glCopyNamedBufferSubData");
2837 copy_buffer_sub_data(ctx
, src
, dst
, readOffset
, writeOffset
, size
,
2838 "glCopyNamedBufferSubData");
2842 validate_map_buffer_range(struct gl_context
*ctx
,
2843 struct gl_buffer_object
*bufObj
, GLintptr offset
,
2844 GLsizeiptr length
, GLbitfield access
,
2847 GLbitfield allowed_access
;
2849 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, false);
2852 _mesa_error(ctx
, GL_INVALID_VALUE
,
2853 "%s(offset %ld < 0)", func
, (long) offset
);
2858 _mesa_error(ctx
, GL_INVALID_VALUE
,
2859 "%s(length %ld < 0)", func
, (long) length
);
2863 /* Page 38 of the PDF of the OpenGL ES 3.0 spec says:
2865 * "An INVALID_OPERATION error is generated for any of the following
2868 * * <length> is zero."
2870 * Additionally, page 94 of the PDF of the OpenGL 4.5 core spec
2871 * (30.10.2014) also says this, so it's no longer allowed for desktop GL,
2875 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(length = 0)", func
);
2879 allowed_access
= GL_MAP_READ_BIT
|
2881 GL_MAP_INVALIDATE_RANGE_BIT
|
2882 GL_MAP_INVALIDATE_BUFFER_BIT
|
2883 GL_MAP_FLUSH_EXPLICIT_BIT
|
2884 GL_MAP_UNSYNCHRONIZED_BIT
;
2886 if (ctx
->Extensions
.ARB_buffer_storage
) {
2887 allowed_access
|= GL_MAP_PERSISTENT_BIT
|
2888 GL_MAP_COHERENT_BIT
;
2891 if (access
& ~allowed_access
) {
2892 /* generate an error if any bits other than those allowed are set */
2893 _mesa_error(ctx
, GL_INVALID_VALUE
,
2894 "%s(access has undefined bits set)", func
);
2898 if ((access
& (GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
)) == 0) {
2899 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2900 "%s(access indicates neither read or write)", func
);
2904 if ((access
& GL_MAP_READ_BIT
) &&
2905 (access
& (GL_MAP_INVALIDATE_RANGE_BIT
|
2906 GL_MAP_INVALIDATE_BUFFER_BIT
|
2907 GL_MAP_UNSYNCHRONIZED_BIT
))) {
2908 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2909 "%s(read access with disallowed bits)", func
);
2913 if ((access
& GL_MAP_FLUSH_EXPLICIT_BIT
) &&
2914 ((access
& GL_MAP_WRITE_BIT
) == 0)) {
2915 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2916 "%s(access has flush explicit without write)", func
);
2920 if (access
& GL_MAP_READ_BIT
&&
2921 !(bufObj
->StorageFlags
& GL_MAP_READ_BIT
)) {
2922 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2923 "%s(buffer does not allow read access)", func
);
2927 if (access
& GL_MAP_WRITE_BIT
&&
2928 !(bufObj
->StorageFlags
& GL_MAP_WRITE_BIT
)) {
2929 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2930 "%s(buffer does not allow write access)", func
);
2934 if (access
& GL_MAP_COHERENT_BIT
&&
2935 !(bufObj
->StorageFlags
& GL_MAP_COHERENT_BIT
)) {
2936 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2937 "%s(buffer does not allow coherent access)", func
);
2941 if (access
& GL_MAP_PERSISTENT_BIT
&&
2942 !(bufObj
->StorageFlags
& GL_MAP_PERSISTENT_BIT
)) {
2943 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2944 "%s(buffer does not allow persistent access)", func
);
2948 if (offset
+ length
> bufObj
->Size
) {
2949 _mesa_error(ctx
, GL_INVALID_VALUE
,
2950 "%s(offset %lu + length %lu > buffer_size %lu)", func
,
2951 (unsigned long) offset
, (unsigned long) length
,
2952 (unsigned long) bufObj
->Size
);
2956 if (_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
2957 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2958 "%s(buffer already mapped)", func
);
2962 if (access
& GL_MAP_WRITE_BIT
) {
2963 bufObj
->NumMapBufferWriteCalls
++;
2964 if ((bufObj
->Usage
== GL_STATIC_DRAW
||
2965 bufObj
->Usage
== GL_STATIC_COPY
) &&
2966 bufObj
->NumMapBufferWriteCalls
>= BUFFER_WARNING_CALL_COUNT
) {
2967 BUFFER_USAGE_WARNING(ctx
,
2968 "using %s(buffer %u, offset %u, length %u) to "
2969 "update a %s buffer",
2970 func
, bufObj
->Name
, offset
, length
,
2971 _mesa_enum_to_string(bufObj
->Usage
));
2979 map_buffer_range(struct gl_context
*ctx
, struct gl_buffer_object
*bufObj
,
2980 GLintptr offset
, GLsizeiptr length
, GLbitfield access
,
2983 if (!bufObj
->Size
) {
2984 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(buffer size = 0)", func
);
2988 assert(ctx
->Driver
.MapBufferRange
);
2989 void *map
= ctx
->Driver
.MapBufferRange(ctx
, offset
, length
, access
, bufObj
,
2992 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s(map failed)", func
);
2995 /* The driver callback should have set all these fields.
2996 * This is important because other modules (like VBO) might call
2997 * the driver function directly.
2999 assert(bufObj
->Mappings
[MAP_USER
].Pointer
== map
);
3000 assert(bufObj
->Mappings
[MAP_USER
].Length
== length
);
3001 assert(bufObj
->Mappings
[MAP_USER
].Offset
== offset
);
3002 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
== access
);
3005 if (access
& GL_MAP_WRITE_BIT
) {
3006 bufObj
->Written
= GL_TRUE
;
3007 bufObj
->MinMaxCacheDirty
= true;
3011 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
3012 printf("glMapBuffer(%u, sz %ld, access 0x%x)\n",
3013 bufObj
->Name
, bufObj
->Size
, access
);
3014 /* Access must be write only */
3015 if ((access
& GL_MAP_WRITE_BIT
) && (!(access
& ~GL_MAP_WRITE_BIT
))) {
3017 GLubyte
*b
= (GLubyte
*) bufObj
->Pointer
;
3018 for (i
= 0; i
< bufObj
->Size
; i
++)
3025 if (strstr(func
, "Range") == NULL
) { /* If not MapRange */
3026 GLubyte
*buf
= (GLubyte
*) bufObj
->Pointer
;
3028 /* buffer is 100 bytes larger than requested, fill with magic value */
3029 for (i
= 0; i
< 100; i
++) {
3030 buf
[bufObj
->Size
- i
- 1] = 123;
3039 _mesa_MapBufferRange_no_error(GLenum target
, GLintptr offset
,
3040 GLsizeiptr length
, GLbitfield access
)
3042 GET_CURRENT_CONTEXT(ctx
);
3044 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3045 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3047 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3048 "glMapBufferRange");
3052 _mesa_MapBufferRange(GLenum target
, GLintptr offset
, GLsizeiptr length
,
3055 GET_CURRENT_CONTEXT(ctx
);
3056 struct gl_buffer_object
*bufObj
;
3058 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3059 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3060 "glMapBufferRange(ARB_map_buffer_range not supported)");
3064 bufObj
= get_buffer(ctx
, "glMapBufferRange", target
, GL_INVALID_OPERATION
);
3068 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3069 "glMapBufferRange"))
3072 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3073 "glMapBufferRange");
3077 _mesa_MapNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3078 GLsizeiptr length
, GLbitfield access
)
3080 GET_CURRENT_CONTEXT(ctx
);
3081 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3083 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3084 "glMapNamedBufferRange");
3088 _mesa_MapNamedBufferRange(GLuint buffer
, GLintptr offset
, GLsizeiptr length
,
3091 GET_CURRENT_CONTEXT(ctx
);
3092 struct gl_buffer_object
*bufObj
;
3094 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3095 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3096 "glMapNamedBufferRange("
3097 "ARB_map_buffer_range not supported)");
3101 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBufferRange");
3105 if (!validate_map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3106 "glMapNamedBufferRange"))
3109 return map_buffer_range(ctx
, bufObj
, offset
, length
, access
,
3110 "glMapNamedBufferRange");
3114 * Converts GLenum access from MapBuffer and MapNamedBuffer into
3115 * flags for input to map_buffer_range.
3117 * \return true if the type of requested access is permissible.
3120 get_map_buffer_access_flags(struct gl_context
*ctx
, GLenum access
,
3124 case GL_READ_ONLY_ARB
:
3125 *flags
= GL_MAP_READ_BIT
;
3126 return _mesa_is_desktop_gl(ctx
);
3127 case GL_WRITE_ONLY_ARB
:
3128 *flags
= GL_MAP_WRITE_BIT
;
3130 case GL_READ_WRITE_ARB
:
3131 *flags
= GL_MAP_READ_BIT
| GL_MAP_WRITE_BIT
;
3132 return _mesa_is_desktop_gl(ctx
);
3139 _mesa_MapBuffer_no_error(GLenum target
, GLenum access
)
3141 GET_CURRENT_CONTEXT(ctx
);
3143 GLbitfield accessFlags
;
3144 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3146 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3147 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3149 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3154 _mesa_MapBuffer(GLenum target
, GLenum access
)
3156 GET_CURRENT_CONTEXT(ctx
);
3157 struct gl_buffer_object
*bufObj
;
3158 GLbitfield accessFlags
;
3160 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3161 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapBuffer(invalid access)");
3165 bufObj
= get_buffer(ctx
, "glMapBuffer", target
, GL_INVALID_OPERATION
);
3169 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3173 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3178 _mesa_MapNamedBuffer_no_error(GLuint buffer
, GLenum access
)
3180 GET_CURRENT_CONTEXT(ctx
);
3182 GLbitfield accessFlags
;
3183 get_map_buffer_access_flags(ctx
, access
, &accessFlags
);
3185 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3187 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3188 "glMapNamedBuffer");
3192 _mesa_MapNamedBuffer(GLuint buffer
, GLenum access
)
3194 GET_CURRENT_CONTEXT(ctx
);
3195 struct gl_buffer_object
*bufObj
;
3196 GLbitfield accessFlags
;
3198 if (!get_map_buffer_access_flags(ctx
, access
, &accessFlags
)) {
3199 _mesa_error(ctx
, GL_INVALID_ENUM
, "glMapNamedBuffer(invalid access)");
3203 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
, "glMapNamedBuffer");
3207 if (!validate_map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3208 "glMapNamedBuffer"))
3211 return map_buffer_range(ctx
, bufObj
, 0, bufObj
->Size
, accessFlags
,
3212 "glMapNamedBuffer");
3217 flush_mapped_buffer_range(struct gl_context
*ctx
,
3218 struct gl_buffer_object
*bufObj
,
3219 GLintptr offset
, GLsizeiptr length
,
3222 if (!ctx
->Extensions
.ARB_map_buffer_range
) {
3223 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3224 "%s(ARB_map_buffer_range not supported)", func
);
3229 _mesa_error(ctx
, GL_INVALID_VALUE
,
3230 "%s(offset %ld < 0)", func
, (long) offset
);
3235 _mesa_error(ctx
, GL_INVALID_VALUE
,
3236 "%s(length %ld < 0)", func
, (long) length
);
3240 if (!_mesa_bufferobj_mapped(bufObj
, MAP_USER
)) {
3241 /* buffer is not mapped */
3242 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3243 "%s(buffer is not mapped)", func
);
3247 if ((bufObj
->Mappings
[MAP_USER
].AccessFlags
&
3248 GL_MAP_FLUSH_EXPLICIT_BIT
) == 0) {
3249 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3250 "%s(GL_MAP_FLUSH_EXPLICIT_BIT not set)", func
);
3254 if (offset
+ length
> bufObj
->Mappings
[MAP_USER
].Length
) {
3255 _mesa_error(ctx
, GL_INVALID_VALUE
,
3256 "%s(offset %ld + length %ld > mapped length %ld)", func
,
3257 (long) offset
, (long) length
,
3258 (long) bufObj
->Mappings
[MAP_USER
].Length
);
3262 assert(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_WRITE_BIT
);
3264 if (ctx
->Driver
.FlushMappedBufferRange
)
3265 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3270 _mesa_FlushMappedBufferRange_no_error(GLenum target
, GLintptr offset
,
3273 GET_CURRENT_CONTEXT(ctx
);
3274 struct gl_buffer_object
**bufObjPtr
= get_buffer_target(ctx
, target
);
3275 struct gl_buffer_object
*bufObj
= *bufObjPtr
;
3277 if (ctx
->Driver
.FlushMappedBufferRange
)
3278 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3283 _mesa_FlushMappedBufferRange(GLenum target
, GLintptr offset
,
3286 GET_CURRENT_CONTEXT(ctx
);
3287 struct gl_buffer_object
*bufObj
;
3289 bufObj
= get_buffer(ctx
, "glFlushMappedBufferRange", target
,
3290 GL_INVALID_OPERATION
);
3294 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3295 "glFlushMappedBufferRange");
3299 _mesa_FlushMappedNamedBufferRange_no_error(GLuint buffer
, GLintptr offset
,
3302 GET_CURRENT_CONTEXT(ctx
);
3303 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
3305 if (ctx
->Driver
.FlushMappedBufferRange
)
3306 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
, bufObj
,
3311 _mesa_FlushMappedNamedBufferRange(GLuint buffer
, GLintptr offset
,
3314 GET_CURRENT_CONTEXT(ctx
);
3315 struct gl_buffer_object
*bufObj
;
3317 bufObj
= _mesa_lookup_bufferobj_err(ctx
, buffer
,
3318 "glFlushMappedNamedBufferRange");
3322 flush_mapped_buffer_range(ctx
, bufObj
, offset
, length
,
3323 "glFlushMappedNamedBufferRange");
3327 bind_buffer_range_uniform_buffer(struct gl_context
*ctx
, GLuint index
,
3328 struct gl_buffer_object
*bufObj
,
3329 GLintptr offset
, GLsizeiptr size
)
3331 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3336 _mesa_reference_buffer_object(ctx
, &ctx
->UniformBuffer
, bufObj
);
3337 bind_uniform_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3341 * Bind a region of a buffer object to a uniform block binding point.
3342 * \param index the uniform buffer binding point index
3343 * \param bufObj the buffer object
3344 * \param offset offset to the start of buffer object region
3345 * \param size size of the buffer object region
3348 bind_buffer_range_uniform_buffer_err(struct gl_context
*ctx
, GLuint index
,
3349 struct gl_buffer_object
*bufObj
,
3350 GLintptr offset
, GLsizeiptr size
)
3352 if (index
>= ctx
->Const
.MaxUniformBufferBindings
) {
3353 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3357 if (offset
& (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3358 _mesa_error(ctx
, GL_INVALID_VALUE
,
3359 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3360 ctx
->Const
.UniformBufferOffsetAlignment
);
3364 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
3368 bind_buffer_range_shader_storage_buffer(struct gl_context
*ctx
,
3370 struct gl_buffer_object
*bufObj
,
3374 if (bufObj
== ctx
->Shared
->NullBufferObj
) {
3379 _mesa_reference_buffer_object(ctx
, &ctx
->ShaderStorageBuffer
, bufObj
);
3380 bind_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
, GL_FALSE
);
3384 * Bind a region of a buffer object to a shader storage block binding point.
3385 * \param index the shader storage buffer binding point index
3386 * \param bufObj the buffer object
3387 * \param offset offset to the start of buffer object region
3388 * \param size size of the buffer object region
3391 bind_buffer_range_shader_storage_buffer_err(struct gl_context
*ctx
,
3393 struct gl_buffer_object
*bufObj
,
3394 GLintptr offset
, GLsizeiptr size
)
3396 if (index
>= ctx
->Const
.MaxShaderStorageBufferBindings
) {
3397 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(index=%d)", index
);
3401 if (offset
& (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3402 _mesa_error(ctx
, GL_INVALID_VALUE
,
3403 "glBindBufferRange(offset misaligned %d/%d)", (int) offset
,
3404 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3408 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
, size
);
3412 * Binds a buffer object to an atomic buffer binding point.
3414 * Unlike set_atomic_buffer_binding(), this function also validates the
3415 * index and offset, flushes vertices, and updates NewDriverState.
3416 * It also checks if the binding has actually changing before
3420 bind_atomic_buffer_err(struct gl_context
*ctx
, unsigned index
,
3421 struct gl_buffer_object
*bufObj
, GLintptr offset
,
3422 GLsizeiptr size
, const char *name
)
3424 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
) {
3425 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index=%d)", name
, index
);
3429 if (offset
& (ATOMIC_COUNTER_SIZE
- 1)) {
3430 _mesa_error(ctx
, GL_INVALID_VALUE
,
3431 "%s(offset misaligned %d/%d)", name
, (int) offset
,
3432 ATOMIC_COUNTER_SIZE
);
3436 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
3440 bind_buffers_check_offset_and_size(struct gl_context
*ctx
,
3442 const GLintptr
*offsets
,
3443 const GLsizeiptr
*sizes
)
3445 if (offsets
[index
] < 0) {
3446 /* The ARB_multi_bind spec says:
3448 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3449 * value in <offsets> is less than zero (per binding)."
3451 _mesa_error(ctx
, GL_INVALID_VALUE
,
3452 "glBindBuffersRange(offsets[%u]=%" PRId64
" < 0)",
3453 index
, (int64_t) offsets
[index
]);
3457 if (sizes
[index
] <= 0) {
3458 /* The ARB_multi_bind spec says:
3460 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3461 * value in <sizes> is less than or equal to zero (per binding)."
3463 _mesa_error(ctx
, GL_INVALID_VALUE
,
3464 "glBindBuffersRange(sizes[%u]=%" PRId64
" <= 0)",
3465 index
, (int64_t) sizes
[index
]);
3473 error_check_bind_uniform_buffers(struct gl_context
*ctx
,
3474 GLuint first
, GLsizei count
,
3477 if (!ctx
->Extensions
.ARB_uniform_buffer_object
) {
3478 _mesa_error(ctx
, GL_INVALID_ENUM
,
3479 "%s(target=GL_UNIFORM_BUFFER)", caller
);
3483 /* The ARB_multi_bind_spec says:
3485 * "An INVALID_OPERATION error is generated if <first> + <count> is
3486 * greater than the number of target-specific indexed binding points,
3487 * as described in section 6.7.1."
3489 if (first
+ count
> ctx
->Const
.MaxUniformBufferBindings
) {
3490 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3491 "%s(first=%u + count=%d > the value of "
3492 "GL_MAX_UNIFORM_BUFFER_BINDINGS=%u)",
3493 caller
, first
, count
,
3494 ctx
->Const
.MaxUniformBufferBindings
);
3502 error_check_bind_shader_storage_buffers(struct gl_context
*ctx
,
3503 GLuint first
, GLsizei count
,
3506 if (!ctx
->Extensions
.ARB_shader_storage_buffer_object
) {
3507 _mesa_error(ctx
, GL_INVALID_ENUM
,
3508 "%s(target=GL_SHADER_STORAGE_BUFFER)", caller
);
3512 /* The ARB_multi_bind_spec says:
3514 * "An INVALID_OPERATION error is generated if <first> + <count> is
3515 * greater than the number of target-specific indexed binding points,
3516 * as described in section 6.7.1."
3518 if (first
+ count
> ctx
->Const
.MaxShaderStorageBufferBindings
) {
3519 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3520 "%s(first=%u + count=%d > the value of "
3521 "GL_MAX_SHADER_STORAGE_BUFFER_BINDINGS=%u)",
3522 caller
, first
, count
,
3523 ctx
->Const
.MaxShaderStorageBufferBindings
);
3531 * Unbind all uniform buffers in the range
3532 * <first> through <first>+<count>-1
3535 unbind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3537 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3539 for (int i
= 0; i
< count
; i
++)
3540 set_ubo_binding(ctx
, &ctx
->UniformBufferBindings
[first
+ i
],
3541 bufObj
, -1, -1, GL_TRUE
);
3545 * Unbind all shader storage buffers in the range
3546 * <first> through <first>+<count>-1
3549 unbind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3552 struct gl_buffer_object
*bufObj
= ctx
->Shared
->NullBufferObj
;
3554 for (int i
= 0; i
< count
; i
++)
3555 set_ssbo_binding(ctx
, &ctx
->ShaderStorageBufferBindings
[first
+ i
],
3556 bufObj
, -1, -1, GL_TRUE
);
3560 bind_uniform_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
,
3561 const GLuint
*buffers
,
3563 const GLintptr
*offsets
, const GLsizeiptr
*sizes
,
3566 if (!error_check_bind_uniform_buffers(ctx
, first
, count
, caller
))
3569 /* Assume that at least one binding will be changed */
3570 FLUSH_VERTICES(ctx
, 0);
3571 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewUniformBuffer
;
3574 /* The ARB_multi_bind spec says:
3576 * "If <buffers> is NULL, all bindings from <first> through
3577 * <first>+<count>-1 are reset to their unbound (zero) state.
3578 * In this case, the offsets and sizes associated with the
3579 * binding points are set to default values, ignoring
3580 * <offsets> and <sizes>."
3582 unbind_uniform_buffers(ctx
, first
, count
);
3586 /* Note that the error semantics for multi-bind commands differ from
3587 * those of other GL commands.
3589 * The Issues section in the ARB_multi_bind spec says:
3591 * "(11) Typically, OpenGL specifies that if an error is generated by a
3592 * command, that command has no effect. This is somewhat
3593 * unfortunate for multi-bind commands, because it would require a
3594 * first pass to scan the entire list of bound objects for errors
3595 * and then a second pass to actually perform the bindings.
3596 * Should we have different error semantics?
3598 * RESOLVED: Yes. In this specification, when the parameters for
3599 * one of the <count> binding points are invalid, that binding point
3600 * is not updated and an error will be generated. However, other
3601 * binding points in the same command will be updated if their
3602 * parameters are valid and no other error occurs."
3605 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3607 for (int i
= 0; i
< count
; i
++) {
3608 struct gl_uniform_buffer_binding
*binding
=
3609 &ctx
->UniformBufferBindings
[first
+ i
];
3610 struct gl_buffer_object
*bufObj
;
3611 GLintptr offset
= 0;
3612 GLsizeiptr size
= 0;
3615 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3618 /* The ARB_multi_bind spec says:
3620 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3621 * pair of values in <offsets> and <sizes> does not respectively
3622 * satisfy the constraints described for those parameters for the
3623 * specified target, as described in section 6.7.1 (per binding)."
3625 * Section 6.7.1 refers to table 6.5, which says:
3627 * "┌───────────────────────────────────────────────────────────────┐
3628 * │ Uniform buffer array bindings (see sec. 7.6) │
3629 * ├─────────────────────┬─────────────────────────────────────────┤
3631 * │ offset restriction │ multiple of value of UNIFORM_BUFFER_- │
3632 * │ │ OFFSET_ALIGNMENT │
3634 * │ size restriction │ none │
3635 * └─────────────────────┴─────────────────────────────────────────┘"
3637 if (offsets
[i
] & (ctx
->Const
.UniformBufferOffsetAlignment
- 1)) {
3638 _mesa_error(ctx
, GL_INVALID_VALUE
,
3639 "glBindBuffersRange(offsets[%u]=%" PRId64
3640 " is misaligned; it must be a multiple of the value of "
3641 "GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT=%u when "
3642 "target=GL_UNIFORM_BUFFER)",
3643 i
, (int64_t) offsets
[i
],
3644 ctx
->Const
.UniformBufferOffsetAlignment
);
3648 offset
= offsets
[i
];
3652 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3653 bufObj
= binding
->BufferObject
;
3655 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3658 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3659 set_ubo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3661 set_ubo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3665 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3669 bind_shader_storage_buffers(struct gl_context
*ctx
, GLuint first
,
3670 GLsizei count
, const GLuint
*buffers
,
3672 const GLintptr
*offsets
,
3673 const GLsizeiptr
*sizes
,
3676 if (!error_check_bind_shader_storage_buffers(ctx
, first
, count
, caller
))
3679 /* Assume that at least one binding will be changed */
3680 FLUSH_VERTICES(ctx
, 0);
3681 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewShaderStorageBuffer
;
3684 /* The ARB_multi_bind spec says:
3686 * "If <buffers> is NULL, all bindings from <first> through
3687 * <first>+<count>-1 are reset to their unbound (zero) state.
3688 * In this case, the offsets and sizes associated with the
3689 * binding points are set to default values, ignoring
3690 * <offsets> and <sizes>."
3692 unbind_shader_storage_buffers(ctx
, first
, count
);
3696 /* Note that the error semantics for multi-bind commands differ from
3697 * those of other GL commands.
3699 * The Issues section in the ARB_multi_bind spec says:
3701 * "(11) Typically, OpenGL specifies that if an error is generated by a
3702 * command, that command has no effect. This is somewhat
3703 * unfortunate for multi-bind commands, because it would require a
3704 * first pass to scan the entire list of bound objects for errors
3705 * and then a second pass to actually perform the bindings.
3706 * Should we have different error semantics?
3708 * RESOLVED: Yes. In this specification, when the parameters for
3709 * one of the <count> binding points are invalid, that binding point
3710 * is not updated and an error will be generated. However, other
3711 * binding points in the same command will be updated if their
3712 * parameters are valid and no other error occurs."
3715 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3717 for (int i
= 0; i
< count
; i
++) {
3718 struct gl_shader_storage_buffer_binding
*binding
=
3719 &ctx
->ShaderStorageBufferBindings
[first
+ i
];
3720 struct gl_buffer_object
*bufObj
;
3721 GLintptr offset
= 0;
3722 GLsizeiptr size
= 0;
3725 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3728 /* The ARB_multi_bind spec says:
3730 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3731 * pair of values in <offsets> and <sizes> does not respectively
3732 * satisfy the constraints described for those parameters for the
3733 * specified target, as described in section 6.7.1 (per binding)."
3735 * Section 6.7.1 refers to table 6.5, which says:
3737 * "┌───────────────────────────────────────────────────────────────┐
3738 * │ Shader storage buffer array bindings (see sec. 7.8) │
3739 * ├─────────────────────┬─────────────────────────────────────────┤
3741 * │ offset restriction │ multiple of value of SHADER_STORAGE_- │
3742 * │ │ BUFFER_OFFSET_ALIGNMENT │
3744 * │ size restriction │ none │
3745 * └─────────────────────┴─────────────────────────────────────────┘"
3747 if (offsets
[i
] & (ctx
->Const
.ShaderStorageBufferOffsetAlignment
- 1)) {
3748 _mesa_error(ctx
, GL_INVALID_VALUE
,
3749 "glBindBuffersRange(offsets[%u]=%" PRId64
3750 " is misaligned; it must be a multiple of the value of "
3751 "GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT=%u when "
3752 "target=GL_SHADER_STORAGE_BUFFER)",
3753 i
, (int64_t) offsets
[i
],
3754 ctx
->Const
.ShaderStorageBufferOffsetAlignment
);
3758 offset
= offsets
[i
];
3762 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
3763 bufObj
= binding
->BufferObject
;
3765 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3768 if (bufObj
== ctx
->Shared
->NullBufferObj
)
3769 set_ssbo_binding(ctx
, binding
, bufObj
, -1, -1, !range
);
3771 set_ssbo_binding(ctx
, binding
, bufObj
, offset
, size
, !range
);
3775 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3779 error_check_bind_xfb_buffers(struct gl_context
*ctx
,
3780 struct gl_transform_feedback_object
*tfObj
,
3781 GLuint first
, GLsizei count
, const char *caller
)
3783 if (!ctx
->Extensions
.EXT_transform_feedback
) {
3784 _mesa_error(ctx
, GL_INVALID_ENUM
,
3785 "%s(target=GL_TRANSFORM_FEEDBACK_BUFFER)", caller
);
3789 /* Page 398 of the PDF of the OpenGL 4.4 (Core Profile) spec says:
3791 * "An INVALID_OPERATION error is generated :
3794 * • by BindBufferRange or BindBufferBase if target is TRANSFORM_-
3795 * FEEDBACK_BUFFER and transform feedback is currently active."
3797 * We assume that this is also meant to apply to BindBuffersRange
3798 * and BindBuffersBase.
3800 if (tfObj
->Active
) {
3801 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3802 "%s(Changing transform feedback buffers while "
3803 "transform feedback is active)", caller
);
3807 /* The ARB_multi_bind_spec says:
3809 * "An INVALID_OPERATION error is generated if <first> + <count> is
3810 * greater than the number of target-specific indexed binding points,
3811 * as described in section 6.7.1."
3813 if (first
+ count
> ctx
->Const
.MaxTransformFeedbackBuffers
) {
3814 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3815 "%s(first=%u + count=%d > the value of "
3816 "GL_MAX_TRANSFORM_FEEDBACK_BUFFERS=%u)",
3817 caller
, first
, count
,
3818 ctx
->Const
.MaxTransformFeedbackBuffers
);
3826 * Unbind all transform feedback buffers in the range
3827 * <first> through <first>+<count>-1
3830 unbind_xfb_buffers(struct gl_context
*ctx
,
3831 struct gl_transform_feedback_object
*tfObj
,
3832 GLuint first
, GLsizei count
)
3834 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3836 for (int i
= 0; i
< count
; i
++)
3837 _mesa_set_transform_feedback_binding(ctx
, tfObj
, first
+ i
,
3842 bind_xfb_buffers(struct gl_context
*ctx
,
3843 GLuint first
, GLsizei count
,
3844 const GLuint
*buffers
,
3846 const GLintptr
*offsets
,
3847 const GLsizeiptr
*sizes
,
3850 struct gl_transform_feedback_object
*tfObj
=
3851 ctx
->TransformFeedback
.CurrentObject
;
3853 if (!error_check_bind_xfb_buffers(ctx
, tfObj
, first
, count
, caller
))
3856 /* Assume that at least one binding will be changed */
3857 FLUSH_VERTICES(ctx
, 0);
3858 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewTransformFeedback
;
3861 /* The ARB_multi_bind spec says:
3863 * "If <buffers> is NULL, all bindings from <first> through
3864 * <first>+<count>-1 are reset to their unbound (zero) state.
3865 * In this case, the offsets and sizes associated with the
3866 * binding points are set to default values, ignoring
3867 * <offsets> and <sizes>."
3869 unbind_xfb_buffers(ctx
, tfObj
, first
, count
);
3873 /* Note that the error semantics for multi-bind commands differ from
3874 * those of other GL commands.
3876 * The Issues section in the ARB_multi_bind spec says:
3878 * "(11) Typically, OpenGL specifies that if an error is generated by a
3879 * command, that command has no effect. This is somewhat
3880 * unfortunate for multi-bind commands, because it would require a
3881 * first pass to scan the entire list of bound objects for errors
3882 * and then a second pass to actually perform the bindings.
3883 * Should we have different error semantics?
3885 * RESOLVED: Yes. In this specification, when the parameters for
3886 * one of the <count> binding points are invalid, that binding point
3887 * is not updated and an error will be generated. However, other
3888 * binding points in the same command will be updated if their
3889 * parameters are valid and no other error occurs."
3892 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
3894 for (int i
= 0; i
< count
; i
++) {
3895 const GLuint index
= first
+ i
;
3896 struct gl_buffer_object
* const boundBufObj
= tfObj
->Buffers
[index
];
3897 struct gl_buffer_object
*bufObj
;
3898 GLintptr offset
= 0;
3899 GLsizeiptr size
= 0;
3902 offset
= offsets
[i
];
3905 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
3908 /* The ARB_multi_bind spec says:
3910 * "An INVALID_VALUE error is generated by BindBuffersRange if any
3911 * pair of values in <offsets> and <sizes> does not respectively
3912 * satisfy the constraints described for those parameters for the
3913 * specified target, as described in section 6.7.1 (per binding)."
3915 * Section 6.7.1 refers to table 6.5, which says:
3917 * "┌───────────────────────────────────────────────────────────────┐
3918 * │ Transform feedback array bindings (see sec. 13.2.2) │
3919 * ├───────────────────────┬───────────────────────────────────────┤
3921 * │ offset restriction │ multiple of 4 │
3923 * │ size restriction │ multiple of 4 │
3924 * └───────────────────────┴───────────────────────────────────────┘"
3926 if (offsets
[i
] & 0x3) {
3927 _mesa_error(ctx
, GL_INVALID_VALUE
,
3928 "glBindBuffersRange(offsets[%u]=%" PRId64
3929 " is misaligned; it must be a multiple of 4 when "
3930 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3931 i
, (int64_t) offsets
[i
]);
3935 if (sizes
[i
] & 0x3) {
3936 _mesa_error(ctx
, GL_INVALID_VALUE
,
3937 "glBindBuffersRange(sizes[%u]=%" PRId64
3938 " is misaligned; it must be a multiple of 4 when "
3939 "target=GL_TRANSFORM_FEEDBACK_BUFFER)",
3940 i
, (int64_t) sizes
[i
]);
3944 offset
= offsets
[i
];
3948 if (boundBufObj
&& boundBufObj
->Name
== buffers
[i
])
3949 bufObj
= boundBufObj
;
3951 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
3954 _mesa_set_transform_feedback_binding(ctx
, tfObj
, index
, bufObj
,
3958 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
3962 error_check_bind_atomic_buffers(struct gl_context
*ctx
,
3963 GLuint first
, GLsizei count
,
3966 if (!ctx
->Extensions
.ARB_shader_atomic_counters
) {
3967 _mesa_error(ctx
, GL_INVALID_ENUM
,
3968 "%s(target=GL_ATOMIC_COUNTER_BUFFER)", caller
);
3972 /* The ARB_multi_bind_spec says:
3974 * "An INVALID_OPERATION error is generated if <first> + <count> is
3975 * greater than the number of target-specific indexed binding points,
3976 * as described in section 6.7.1."
3978 if (first
+ count
> ctx
->Const
.MaxAtomicBufferBindings
) {
3979 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3980 "%s(first=%u + count=%d > the value of "
3981 "GL_MAX_ATOMIC_BUFFER_BINDINGS=%u)",
3982 caller
, first
, count
, ctx
->Const
.MaxAtomicBufferBindings
);
3990 * Unbind all atomic counter buffers in the range
3991 * <first> through <first>+<count>-1
3994 unbind_atomic_buffers(struct gl_context
*ctx
, GLuint first
, GLsizei count
)
3996 struct gl_buffer_object
* const bufObj
= ctx
->Shared
->NullBufferObj
;
3998 for (int i
= 0; i
< count
; i
++)
3999 set_atomic_buffer_binding(ctx
, &ctx
->AtomicBufferBindings
[first
+ i
],
4004 bind_atomic_buffers(struct gl_context
*ctx
,
4007 const GLuint
*buffers
,
4009 const GLintptr
*offsets
,
4010 const GLsizeiptr
*sizes
,
4013 if (!error_check_bind_atomic_buffers(ctx
, first
, count
, caller
))
4016 /* Assume that at least one binding will be changed */
4017 FLUSH_VERTICES(ctx
, 0);
4018 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewAtomicBuffer
;
4021 /* The ARB_multi_bind spec says:
4023 * "If <buffers> is NULL, all bindings from <first> through
4024 * <first>+<count>-1 are reset to their unbound (zero) state.
4025 * In this case, the offsets and sizes associated with the
4026 * binding points are set to default values, ignoring
4027 * <offsets> and <sizes>."
4029 unbind_atomic_buffers(ctx
, first
, count
);
4033 /* Note that the error semantics for multi-bind commands differ from
4034 * those of other GL commands.
4036 * The Issues section in the ARB_multi_bind spec says:
4038 * "(11) Typically, OpenGL specifies that if an error is generated by a
4039 * command, that command has no effect. This is somewhat
4040 * unfortunate for multi-bind commands, because it would require a
4041 * first pass to scan the entire list of bound objects for errors
4042 * and then a second pass to actually perform the bindings.
4043 * Should we have different error semantics?
4045 * RESOLVED: Yes. In this specification, when the parameters for
4046 * one of the <count> binding points are invalid, that binding point
4047 * is not updated and an error will be generated. However, other
4048 * binding points in the same command will be updated if their
4049 * parameters are valid and no other error occurs."
4052 _mesa_HashLockMutex(ctx
->Shared
->BufferObjects
);
4054 for (int i
= 0; i
< count
; i
++) {
4055 struct gl_atomic_buffer_binding
*binding
=
4056 &ctx
->AtomicBufferBindings
[first
+ i
];
4057 struct gl_buffer_object
*bufObj
;
4058 GLintptr offset
= 0;
4059 GLsizeiptr size
= 0;
4062 if (!bind_buffers_check_offset_and_size(ctx
, i
, offsets
, sizes
))
4065 /* The ARB_multi_bind spec says:
4067 * "An INVALID_VALUE error is generated by BindBuffersRange if any
4068 * pair of values in <offsets> and <sizes> does not respectively
4069 * satisfy the constraints described for those parameters for the
4070 * specified target, as described in section 6.7.1 (per binding)."
4072 * Section 6.7.1 refers to table 6.5, which says:
4074 * "┌───────────────────────────────────────────────────────────────┐
4075 * │ Atomic counter array bindings (see sec. 7.7.2) │
4076 * ├───────────────────────┬───────────────────────────────────────┤
4078 * │ offset restriction │ multiple of 4 │
4080 * │ size restriction │ none │
4081 * └───────────────────────┴───────────────────────────────────────┘"
4083 if (offsets
[i
] & (ATOMIC_COUNTER_SIZE
- 1)) {
4084 _mesa_error(ctx
, GL_INVALID_VALUE
,
4085 "glBindBuffersRange(offsets[%u]=%" PRId64
4086 " is misaligned; it must be a multiple of %d when "
4087 "target=GL_ATOMIC_COUNTER_BUFFER)",
4088 i
, (int64_t) offsets
[i
], ATOMIC_COUNTER_SIZE
);
4092 offset
= offsets
[i
];
4096 if (binding
->BufferObject
&& binding
->BufferObject
->Name
== buffers
[i
])
4097 bufObj
= binding
->BufferObject
;
4099 bufObj
= _mesa_multi_bind_lookup_bufferobj(ctx
, buffers
, i
, caller
);
4102 set_atomic_buffer_binding(ctx
, binding
, bufObj
, offset
, size
);
4105 _mesa_HashUnlockMutex(ctx
->Shared
->BufferObjects
);
4108 static ALWAYS_INLINE
void
4109 bind_buffer_range(GLenum target
, GLuint index
, GLuint buffer
, GLintptr offset
,
4110 GLsizeiptr size
, bool no_error
)
4112 GET_CURRENT_CONTEXT(ctx
);
4113 struct gl_buffer_object
*bufObj
;
4115 if (MESA_VERBOSE
& VERBOSE_API
) {
4116 _mesa_debug(ctx
, "glBindBufferRange(%s, %u, %u, %lu, %lu)\n",
4117 _mesa_enum_to_string(target
), index
, buffer
,
4118 (unsigned long) offset
, (unsigned long) size
);
4122 bufObj
= ctx
->Shared
->NullBufferObj
;
4124 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4125 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4126 &bufObj
, "glBindBufferRange"))
4132 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4133 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4134 index
, bufObj
, offset
, size
);
4136 case GL_UNIFORM_BUFFER
:
4137 bind_buffer_range_uniform_buffer(ctx
, index
, bufObj
, offset
, size
);
4139 case GL_SHADER_STORAGE_BUFFER
:
4140 bind_buffer_range_shader_storage_buffer(ctx
, index
, bufObj
, offset
,
4143 case GL_ATOMIC_COUNTER_BUFFER
:
4144 bind_atomic_buffer(ctx
, index
, bufObj
, offset
, size
);
4147 unreachable("invalid BindBufferRange target with KHR_no_error");
4151 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4152 "glBindBufferRange(invalid buffer=%u)", buffer
);
4158 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindBufferRange(size=%d)",
4165 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4166 if (!_mesa_validate_buffer_range_xfb(ctx
,
4167 ctx
->TransformFeedback
.CurrentObject
,
4168 index
, bufObj
, offset
, size
,
4172 _mesa_bind_buffer_range_xfb(ctx
, ctx
->TransformFeedback
.CurrentObject
,
4173 index
, bufObj
, offset
, size
);
4175 case GL_UNIFORM_BUFFER
:
4176 bind_buffer_range_uniform_buffer_err(ctx
, index
, bufObj
, offset
,
4179 case GL_SHADER_STORAGE_BUFFER
:
4180 bind_buffer_range_shader_storage_buffer_err(ctx
, index
, bufObj
,
4183 case GL_ATOMIC_COUNTER_BUFFER
:
4184 bind_atomic_buffer_err(ctx
, index
, bufObj
, offset
, size
,
4185 "glBindBufferRange");
4188 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferRange(target)");
4195 _mesa_BindBufferRange_no_error(GLenum target
, GLuint index
, GLuint buffer
,
4196 GLintptr offset
, GLsizeiptr size
)
4198 bind_buffer_range(target
, index
, buffer
, offset
, size
, true);
4202 _mesa_BindBufferRange(GLenum target
, GLuint index
,
4203 GLuint buffer
, GLintptr offset
, GLsizeiptr size
)
4205 bind_buffer_range(target
, index
, buffer
, offset
, size
, false);
4209 _mesa_BindBufferBase(GLenum target
, GLuint index
, GLuint buffer
)
4211 GET_CURRENT_CONTEXT(ctx
);
4212 struct gl_buffer_object
*bufObj
;
4214 if (MESA_VERBOSE
& VERBOSE_API
) {
4215 _mesa_debug(ctx
, "glBindBufferBase(%s, %u, %u)\n",
4216 _mesa_enum_to_string(target
), index
, buffer
);
4220 bufObj
= ctx
->Shared
->NullBufferObj
;
4222 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4223 if (!_mesa_handle_bind_buffer_gen(ctx
, buffer
,
4224 &bufObj
, "glBindBufferBase"))
4229 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4230 "glBindBufferBase(invalid buffer=%u)", buffer
);
4234 /* Note that there's some oddness in the GL 3.1-GL 3.3 specifications with
4235 * regards to BindBufferBase. It says (GL 3.1 core spec, page 63):
4237 * "BindBufferBase is equivalent to calling BindBufferRange with offset
4238 * zero and size equal to the size of buffer."
4240 * but it says for glGetIntegeri_v (GL 3.1 core spec, page 230):
4242 * "If the parameter (starting offset or size) was not specified when the
4243 * buffer object was bound, zero is returned."
4245 * What happens if the size of the buffer changes? Does the size of the
4246 * buffer at the moment glBindBufferBase was called still play a role, like
4247 * the first quote would imply, or is the size meaningless in the
4248 * glBindBufferBase case like the second quote would suggest? The GL 4.1
4249 * core spec page 45 says:
4251 * "It is equivalent to calling BindBufferRange with offset zero, while
4252 * size is determined by the size of the bound buffer at the time the
4255 * My interpretation is that the GL 4.1 spec was a clarification of the
4256 * behavior, not a change. In particular, this choice will only make
4257 * rendering work in cases where it would have had undefined results.
4261 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4262 _mesa_bind_buffer_base_transform_feedback(ctx
,
4263 ctx
->TransformFeedback
.CurrentObject
,
4264 index
, bufObj
, false);
4266 case GL_UNIFORM_BUFFER
:
4267 bind_buffer_base_uniform_buffer(ctx
, index
, bufObj
);
4269 case GL_SHADER_STORAGE_BUFFER
:
4270 bind_buffer_base_shader_storage_buffer(ctx
, index
, bufObj
);
4272 case GL_ATOMIC_COUNTER_BUFFER
:
4273 bind_atomic_buffer_err(ctx
, index
, bufObj
, 0, 0,
4274 "glBindBufferBase");
4277 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBufferBase(target)");
4283 _mesa_BindBuffersRange(GLenum target
, GLuint first
, GLsizei count
,
4284 const GLuint
*buffers
,
4285 const GLintptr
*offsets
, const GLsizeiptr
*sizes
)
4287 GET_CURRENT_CONTEXT(ctx
);
4289 if (MESA_VERBOSE
& VERBOSE_API
) {
4290 _mesa_debug(ctx
, "glBindBuffersRange(%s, %u, %d, %p, %p, %p)\n",
4291 _mesa_enum_to_string(target
), first
, count
,
4292 buffers
, offsets
, sizes
);
4296 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4297 bind_xfb_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4298 "glBindBuffersRange");
4300 case GL_UNIFORM_BUFFER
:
4301 bind_uniform_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4302 "glBindBuffersRange");
4304 case GL_SHADER_STORAGE_BUFFER
:
4305 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4306 "glBindBuffersRange");
4308 case GL_ATOMIC_COUNTER_BUFFER
:
4309 bind_atomic_buffers(ctx
, first
, count
, buffers
, true, offsets
, sizes
,
4310 "glBindBuffersRange");
4313 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersRange(target=%s)",
4314 _mesa_enum_to_string(target
));
4320 _mesa_BindBuffersBase(GLenum target
, GLuint first
, GLsizei count
,
4321 const GLuint
*buffers
)
4323 GET_CURRENT_CONTEXT(ctx
);
4325 if (MESA_VERBOSE
& VERBOSE_API
) {
4326 _mesa_debug(ctx
, "glBindBuffersBase(%s, %u, %d, %p)\n",
4327 _mesa_enum_to_string(target
), first
, count
, buffers
);
4331 case GL_TRANSFORM_FEEDBACK_BUFFER
:
4332 bind_xfb_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4333 "glBindBuffersBase");
4335 case GL_UNIFORM_BUFFER
:
4336 bind_uniform_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4337 "glBindBuffersBase");
4339 case GL_SHADER_STORAGE_BUFFER
:
4340 bind_shader_storage_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4341 "glBindBuffersBase");
4343 case GL_ATOMIC_COUNTER_BUFFER
:
4344 bind_atomic_buffers(ctx
, first
, count
, buffers
, false, NULL
, NULL
,
4345 "glBindBuffersBase");
4348 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindBuffersBase(target=%s)",
4349 _mesa_enum_to_string(target
));
4354 static ALWAYS_INLINE
void
4355 invalidate_buffer_subdata(struct gl_context
*ctx
,
4356 struct gl_buffer_object
*bufObj
, GLintptr offset
,
4359 if (ctx
->Driver
.InvalidateBufferSubData
)
4360 ctx
->Driver
.InvalidateBufferSubData(ctx
, bufObj
, offset
, length
);
4364 _mesa_InvalidateBufferSubData_no_error(GLuint buffer
, GLintptr offset
,
4367 GET_CURRENT_CONTEXT(ctx
);
4369 struct gl_buffer_object
*bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4370 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4374 _mesa_InvalidateBufferSubData(GLuint buffer
, GLintptr offset
,
4377 GET_CURRENT_CONTEXT(ctx
);
4378 struct gl_buffer_object
*bufObj
;
4379 const GLintptr end
= offset
+ length
;
4381 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4382 * Profile) spec says:
4384 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4385 * name of an existing buffer object."
4387 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4388 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4389 _mesa_error(ctx
, GL_INVALID_VALUE
,
4390 "glInvalidateBufferSubData(name = %u) invalid object",
4395 /* The GL_ARB_invalidate_subdata spec says:
4397 * "An INVALID_VALUE error is generated if <offset> or <length> is
4398 * negative, or if <offset> + <length> is greater than the value of
4401 if (offset
< 0 || length
< 0 || end
> bufObj
->Size
) {
4402 _mesa_error(ctx
, GL_INVALID_VALUE
,
4403 "glInvalidateBufferSubData(invalid offset or length)");
4407 /* The OpenGL 4.4 (Core Profile) spec says:
4409 * "An INVALID_OPERATION error is generated if buffer is currently
4410 * mapped by MapBuffer or if the invalidate range intersects the range
4411 * currently mapped by MapBufferRange, unless it was mapped
4412 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4414 if (!(bufObj
->Mappings
[MAP_USER
].AccessFlags
& GL_MAP_PERSISTENT_BIT
) &&
4415 bufferobj_range_mapped(bufObj
, offset
, length
)) {
4416 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4417 "glInvalidateBufferSubData(intersection with mapped "
4422 invalidate_buffer_subdata(ctx
, bufObj
, offset
, length
);
4426 _mesa_InvalidateBufferData_no_error(GLuint buffer
)
4428 GET_CURRENT_CONTEXT(ctx
);
4430 struct gl_buffer_object
*bufObj
=_mesa_lookup_bufferobj(ctx
, buffer
);
4431 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4435 _mesa_InvalidateBufferData(GLuint buffer
)
4437 GET_CURRENT_CONTEXT(ctx
);
4438 struct gl_buffer_object
*bufObj
;
4440 /* Section 6.5 (Invalidating Buffer Data) of the OpenGL 4.5 (Compatibility
4441 * Profile) spec says:
4443 * "An INVALID_VALUE error is generated if buffer is zero or is not the
4444 * name of an existing buffer object."
4446 bufObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4447 if (!bufObj
|| bufObj
== &DummyBufferObject
) {
4448 _mesa_error(ctx
, GL_INVALID_VALUE
,
4449 "glInvalidateBufferData(name = %u) invalid object",
4454 /* The OpenGL 4.4 (Core Profile) spec says:
4456 * "An INVALID_OPERATION error is generated if buffer is currently
4457 * mapped by MapBuffer or if the invalidate range intersects the range
4458 * currently mapped by MapBufferRange, unless it was mapped
4459 * with MAP_PERSISTENT_BIT set in the MapBufferRange access flags."
4461 if (_mesa_check_disallowed_mapping(bufObj
)) {
4462 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4463 "glInvalidateBufferData(intersection with mapped "
4468 invalidate_buffer_subdata(ctx
, bufObj
, 0, bufObj
->Size
);
4472 buffer_page_commitment(struct gl_context
*ctx
,
4473 struct gl_buffer_object
*bufferObj
,
4474 GLintptr offset
, GLsizeiptr size
,
4475 GLboolean commit
, const char *func
)
4477 if (!(bufferObj
->StorageFlags
& GL_SPARSE_STORAGE_BIT_ARB
)) {
4478 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(not a sparse buffer object)",
4483 if (size
< 0 || size
> bufferObj
->Size
||
4484 offset
< 0 || offset
> bufferObj
->Size
- size
) {
4485 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(out of bounds)",
4490 /* The GL_ARB_sparse_buffer extension specification says:
4492 * "INVALID_VALUE is generated by BufferPageCommitmentARB if <offset> is
4493 * not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB, or if <size>
4494 * is not an integer multiple of SPARSE_BUFFER_PAGE_SIZE_ARB and does
4495 * not extend to the end of the buffer's data store."
4497 if (offset
% ctx
->Const
.SparseBufferPageSize
!= 0) {
4498 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(offset not aligned to page size)",
4503 if (size
% ctx
->Const
.SparseBufferPageSize
!= 0 &&
4504 offset
+ size
!= bufferObj
->Size
) {
4505 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(size not aligned to page size)",
4510 ctx
->Driver
.BufferPageCommitment(ctx
, bufferObj
, offset
, size
, commit
);
4514 _mesa_BufferPageCommitmentARB(GLenum target
, GLintptr offset
, GLsizeiptr size
,
4517 GET_CURRENT_CONTEXT(ctx
);
4518 struct gl_buffer_object
*bufferObj
;
4520 bufferObj
= get_buffer(ctx
, "glBufferPageCommitmentARB", target
,
4525 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4526 "glBufferPageCommitmentARB");
4530 _mesa_NamedBufferPageCommitmentARB(GLuint buffer
, GLintptr offset
,
4531 GLsizeiptr size
, GLboolean commit
)
4533 GET_CURRENT_CONTEXT(ctx
);
4534 struct gl_buffer_object
*bufferObj
;
4536 bufferObj
= _mesa_lookup_bufferobj(ctx
, buffer
);
4537 if (!bufferObj
|| bufferObj
== &DummyBufferObject
) {
4538 /* Note: the extension spec is not clear about the excpected error value. */
4539 _mesa_error(ctx
, GL_INVALID_VALUE
,
4540 "glNamedBufferPageCommitmentARB(name = %u) invalid object",
4545 buffer_page_commitment(ctx
, bufferObj
, offset
, size
, commit
,
4546 "glNamedBufferPageCommitmentARB");