1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
|
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry>
<refentryinfo>
<keywordset>
<keyword>clCreateContextFromType</keyword>
</keywordset>
</refentryinfo>
<refmeta>
<refentrytitle>
clCreateContextFromType
</refentrytitle>
<refmiscinfo>
<copyright>
<year>2007-2011</year>
<holder>The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.</holder>
</copyright>
</refmiscinfo>
<manvolnum>3</manvolnum>
</refmeta>
<!-- ================================ SYNOPSIS -->
<refnamediv id="clCreateContextFromType">
<refname>
clCreateContextFromType
</refname>
<refpurpose>
Create an OpenCL context from a device type that identifies the specific device(s) to use.
</refpurpose>
</refnamediv>
<refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title>
<funcsynopsis>
<funcprototype>
<funcdef>
<link xlink:href="scalarDataTypes.html">cl_context</link>
<function>
clCreateContextFromType
</function>
</funcdef>
<paramdef>const <type><link xlink:href="enums.html#cl_context_properties">cl_context_properties</link></type>
<parameter>*properties</parameter></paramdef>
<paramdef><link xlink:href="enums.html#cl_device_type">cl_device_type</link>
<parameter>device_type</parameter></paramdef>
<paramdef><link xlink:href="scalarDataTypes.html">void</link>
<parameter>(CL_CALLBACK *pfn_notify)
(const <link xlink:href="scalarDataTypes.html">char</link> *errinfo</parameter></paramdef>
<paramdef>const <link xlink:href="scalarDataTypes.html">void</link>
<parameter>*private_info</parameter></paramdef>
<paramdef><link xlink:href="scalarDataTypes.html">size_t</link>
<parameter>cb</parameter></paramdef>
<paramdef><link xlink:href="scalarDataTypes.html">void</link>
<parameter>*user_data)</parameter></paramdef>
<paramdef><link xlink:href="scalarDataTypes.html">void</link>
<parameter>*user_data</parameter></paramdef>
<paramdef><link xlink:href="scalarDataTypes.html">cl_int</link>
<parameter>*errcode_ret</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<!-- ================================ PARAMETERS -->
<refsect1 xmlns:xlink="http://www.w3.org/1999/xlink" id="parameters">
<title>Parameters</title>
<variablelist>
<!-- ================================ PARAMETER TABLE (OPTIONAL) -->
<varlistentry>
<term>properties</term>
<listitem>
<para>
Specifies a list of context property names and their corresponding values.
Each property name is immediately followed by the corresponding desired
value. The list of supported properties is described in the table
below. <varname>properties</varname> can also be NULL in which case the
platform that is selected is implementation-defined.
</para>
<para>
If the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is supported, <varname>properties</varname>
points to an attribute list whose format and valid contents
are identical to the <varname>properties</varname> argument of
<citerefentry><refentrytitle>clCreateContext</refentrytitle></citerefentry>
which is: <varname>properties</varname> specifies a list of context property
names and their corresponding values. Each property name is immediately
followed by the corresponding desired value. The list is terminated
with 0. The list of supported properties is described in the table
below. <varname>properties</varname> can be NULL in which case the platform
that is selected is implementation-defined.
</para>
<!-- table 4.5 -->
<informaltable frame="all"><tgroup cols="3" align="left" colsep="1" rowsep="1">
<colspec colname="col1" colnum="1" />
<colspec colname="col2" colnum="2" />
<colspec colname="col3" colnum="3" />
<thead>
<row>
<entry>cl_context_properties enum</entry>
<entry>Property value</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><constant>CL_CONTEXT_PLATFORM</constant></entry>
<entry><link xlink:href="abstractDataTypes.html">cl_platform_id</link></entry>
<entry>Specifies the platform to use.</entry>
</row>
<row>
<entry><constant>CL_CONTEXT_INTEROP_USER_SYNC</constant></entry>
<entry><link xlink:href="enums.html#cl_bool">cl_bool</link></entry>
<entry>Specifies whether the user is responsible for synchronization
between OpenCL and other APIs. Please refer to the specific sections
in the OpenCL 1.2 extension specification that describe sharing with
other APIs for restrictions on using this flag. If
<constant>CL_CONTEXT_INTEROP_USER_SYNC</constant> is not specified, a
default of <constant>CL_FALSE</constant> is assumed.</entry>
</row>
<row><!-- ext. spec p. 68, section 9.9.5 -->
<entry><constant>CL_CONTEXT_D3D10_DEVICE_KHR</constant></entry>
<entry><type>ID3D10Device</type> *</entry>
<entry>
Specifies the <type>ID3D10Device</type> * to use for Direct3D 10
interoperability. The default value is NULL (applies if the extension
<citerefentry><refentrytitle>cl_khr_d3d10_sharing</refentrytitle></citerefentry>
is supported)
</entry>
</row>
<row><!-- ext. spec p. 86, section 9.10.5 -->
<entry><constant>CL_CONTEXT_ADAPTER_D3D9_KHR</constant></entry>
<entry><type>IDirect3DDevice9</type> *</entry>
<entry>
Specifies an <type>IDirect3DDevice9</type>
to use for D3D9 intero (applies if the
<citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry>
extension is supported)
</entry>
</row>
<row><!-- ext. spec p. 86, section 9.10.5 -->
<entry><constant>CL_CONTEXT_ADAPTER_D3D9EX_KHR</constant></entry>
<entry><type>IDirect3DDeviceEx</type>*</entry>
<entry>
Specifies an <type>IDirect3DDevice9Ex</type>
to use for D3D9 interop (applies if the
<citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry>
extension is supported)
</entry>
</row>
<row><!-- ext. spec p. 86, section 9.10.5 -->
<entry><constant>CL_CONTEXT_ADAPTER_DXVA_KHR</constant></entry>
<entry><type>IDXVAHD_Device</type> *</entry>
<entry>
Specifies an <type>IDXVAHD_Device</type>
to use for DXVA interop (applies if the
<citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry>
extension is supported)
</entry>
</row>
<row><!-- ext. spec p. 41, section 9.6.4 -->
<entry><constant>CL_GL_CONTEXT_KHR</constant></entry>
<entry>0, OpenGL context handle</entry>
<entry>
OpenGL context to associated
the OpenCL context with (available if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled)
</entry>
</row>
<row><!-- ext. spec p. 41, section 9.6.4 -->
<entry><constant>CL_CGL_SHAREGROUP_KHR</constant></entry>
<entry>0, CGL share group handle</entry>
<entry>
CGL share group to associate
the OpenCL context with (available if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled)
</entry>
</row>
<row><!-- ext. spec p. 41, section 9.6.4 -->
<entry><constant>CL_EGL_DISPLAY_KHR</constant></entry>
<entry> <constant>EGL_NO_DISPLAY</constant>, <type>EGLDisplay</type> handle </entry>
<entry>
CGL share group to associate
the OpenCL context with (available if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled)
</entry>
</row>
<row><!-- ext. spec p. 41, section 9.6.4 -->
<entry><constant>CL_GLX_DISPLAY_KHR</constant></entry>
<entry>None, X handle</entry>
<entry>
X Display an OpenGL context was
created with respect to (available if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled)
</entry>
</row>
<row><!-- ext. spec p. 41, section 9.6.4 -->
<entry><constant>CL_WGL_HDC_KHR</constant></entry>
<entry>0, HDC handle</entry>
<entry>
HDC an OpenGL context was created with respect to (available if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled)
</entry>
</row>
<row><!-- ext. spec p. 99, section 9.11.5 -->
<entry><constant>CL_CONTEXT_D3D11_DEVICE_KHR</constant></entry>
<entry><type>ID3D11Device</type> *</entry>
<entry>
Specifies the <type>ID3D11Device</type> * to use for Direct3D
11 interoperability. The default value is NULL * (applies if the
<citerefentry><refentrytitle>cl_khr_d3d11_sharing</refentrytitle></citerefentry>
extension is supported)
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</listitem>
</varlistentry>
<!-- ================================ END PARAMETER TABLE -->
<!-- ================================ PARAMETER TABLE (OPTIONAL) -->
<varlistentry>
<term>device_type</term>
<listitem>
<para>
A bit-field that identifies the type of device and is described in the table below.
</para>
<!-- table 4.2 -->
<informaltable frame="all"><tgroup cols="2" align="left" colsep="1" rowsep="1">
<colspec colname="col1" colnum="1" />
<colspec colname="col2" colnum="2" />
<thead>
<row>
<entry>cl_device_type</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><constant>CL_DEVICE_TYPE_CPU</constant></entry>
<entry>
An OpenCL device that is the host processor. The host processor
runs the OpenCL implementations and is a single or multi-core CPU.
</entry>
</row>
<row>
<entry><constant>CL_DEVICE_TYPE_GPU</constant></entry>
<entry>
An OpenCL device that is a GPU. By this we mean that the device
can also be used to accelerate a 3D API such as OpenGL or DirectX.
</entry>
</row>
<row>
<entry><constant>CL_DEVICE_TYPE_ACCELERATOR</constant></entry>
<entry>
Dedicated OpenCL accelerators (for example the IBM CELL Blade). These
devices communicate with the host processor using a peripheral
interconnect such as PCIe.
</entry>
</row>
<row>
<entry><constant>CL_DEVICE_TYPE_CUSTOM</constant></entry>
<entry>
Dedicated accelerators that do not support programs written in
OpenCL C.
</entry>
</row>
<row>
<entry><constant>CL_DEVICE_TYPE_DEFAULT</constant></entry>
<entry>
The default OpenCL device in the system. The default device cannot
be a <constant>CL_DEVICE_TYPE_CUSTOM</constant> device.
</entry>
</row>
<row>
<entry><constant>CL_DEVICE_TYPE_ALL</constant></entry>
<entry>
All OpenCL devices available in the system except
<constant>CL_DEVICE_TYPE_CUSTOM</constant> devices.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</listitem>
</varlistentry>
<!-- ================================ END PARAMETER TABLE -->
<varlistentry>
<term><varname>pfn_notify</varname></term>
<!-- copy the description from clCreateContext -->
<listitem>
<para>
A callback function that can be registered by the application. This callback
function will be used by the OpenCL implementation to report information
on errors that occur in this context. This callback function may be called
asynchronously by the OpenCL implementation. It is the application's
responsibility to ensure that the callback function is thread-safe.
If <varname>pfn_notify</varname> is NULL, no callback function is registered.
The parameters to this callback function are:
</para>
<para><varname>errinfo</varname> is a pointer to an error string.</para>
<para>
<varname>private_info</varname> and <varname>cb</varname> represent a pointer
to binary data that is returned by the OpenCL implementation that can be used
to log additional information helpful in debugging the error.
</para>
<para><varname>user_data</varname> is a pointer to user supplied data.</para>
<para>
There are a number of cases where error notifications need to be delivered
due to an error that occurs outside a context. Such notifications may not
be delivered through the <varname>pfn_notify</varname> callback. Where these
notifications go is implementation-defined.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>user_data</varname></term>
<!-- copy the description from clCreateContext -->
<listitem>
<para>
Passed as the <varname>user_data</varname> argument when
<varname>pfn_notify</varname> is called. user_data can be NULL.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<varname> <!-- parameter name -->
errcode_ret
</varname>
</term>
<listitem>
<para> <!-- parameter description -->
Return an appropriate error code. If errcode_ret is NULL, no error code is returned.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<!-- ================================ NOTES -->
<refsect1 id="description"><title>Description</title>
<para>
Only devices that are returned by
<citerefentry><refentrytitle>clGetDeviceIDs</refentrytitle></citerefentry> for
<varname>device_type</varname> are used to create the context. The context does not
reference any sub-devices that may have been created from these devices.
</para>
</refsect1>
<!-- ================================ NOTES -->
<refsect1 id="notes"><title>Notes</title>
<para>
<function>clCreateContextFromType</function> may return all or a subset of the actual
physical devices present in the platform and that match <varname>device_type</varname>.
</para>
<para>
<function>clCreateContextFromType</function> and
<citerefentry><refentrytitle>clCreateContext</refentrytitle></citerefentry> perform an
implicit retain. This is very helpful for 3rd party libraries, which typically get a
context passed to them by the application. However, it is possible that the application
may delete the context without informing the library. Allowing functions to attach to
(i.e. retain) and release a context solves the problem of a context being used by a
library no longer being valid.
</para>
</refsect1>
<!-- ================================ ERRORS -->
<refsect1 id="errors"><title>Errors</title>
<para>
<function>clCreateContextFromType</function> returns a valid non-zero context and
<varname>errcode_ret</varname> is set to <errorname>CL_SUCCESS</errorname> if the
context is created successfully. Otherwise, it returns a NULL value with the following
error vlaues returned in <varname>errcode_ret</varname>:
</para>
<itemizedlist mark="disc">
<listitem>
<errorname>CL_INVALID_PLATFORM</errorname> if <varname>properties</varname>
is NULL and no platform could be selected or if platform value specified
in <varname>properties</varname> is not a valid platform. If the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is supported, this error is replaced (or not) by
<constant>CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR</constant> and possibly
<constant>CL_INVALID_OPERATION</constant> (see below and section 9.6.4 of the
spec for clarification). <!-- ext. spec p. 42 says: "Replace the first error
in the list for clCreateContextFromType with the same two new errors described
above for clCreateContext." However, p. 100 says the same thing except to "add"
those two new errors, not "replace." It's not clear what those "two new errors"
for clCreateContext are. The first "new" error value mentioned for clCreateContext
is CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR on p. 39 (mentioned again several times
on pp. 40-42 for different error conditions (are those different "errors"? Do they
all apply to clCreateContextFromType?) The second "new" error value is mentioned
but not named on p. 41 as "Specifying this property when creating a context with
OpenCL / OpenGL sharing will return an appropriate error." The third new error
mentioned for clCreateContext is CL_INVALID_OPERATION on p. 42. The description
we've supplied above is a guess at interpreting this convoluted indirection. -->
</listitem>
<listitem>
<errorname>CL_INVALID_PROPERTY</errorname> if context property name in
<varname>properties</varname> is not a supported property name, or if the value
specified for a supported property name is not valid, or if the same property
name is specified more than once.
</listitem>
<listitem>
<errorname>CL_INVALID_VALUE</errorname> if <varname>pfn_notify</varname> is NULL
but <varname>user_data</varname> is not NULL.
</listitem>
<listitem>
<errorname>CL_INVALID_DEVICE_TYPE</errorname> if <varname>device_type</varname>
is not a valid value.
</listitem>
<listitem>
<errorname>CL_DEVICE_NOT_AVAILABLE</errorname> if no devices that
match <varname>device_type</varname> and property values specified in
<varname>properties</varname> are currently available.
</listitem>
<listitem>
<errorname>CL_DEVICE_NOT_FOUND</errorname> if no devices that match
<varname>device_type</varname> and property values specified in
<varname>properties</varname> were found.
</listitem>
<listitem>
<errorname>CL_OUT_OF_RESOURCES</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the device.
</listitem>
<listitem>
<errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the host.
</listitem>
<listitem>
<!-- ext spec. p. 68, section 9.9.4 -->
<errorname>CL_INVALID_D3D10_DEVICE_KHR</errorname> if the Direct3D
10 device specified for interoperability is not compatible with
the devices against which the context is to be created (if the
<citerefentry><refentrytitle>cl_khr_d3d10_sharing</refentrytitle></citerefentry>
extension is enabled).
</listitem>
<listitem>
<!-- ext. spec p. 39, section 9.6.3 -->
<errorname>CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR</errorname> when an invalid OpenGL
context or share group object handle is specified in <varname>properties</varname>
if the <citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled.
</listitem>
<listitem>
<!-- ext spec. p. 40, section 9.6.4 -->
<errorname>CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR</errorname>: If
no OpenGL or OpenGL ES context or share group is specified in the
attribute list, then memory objects may not be shared, and calling
any of the commands in section 9.7 will result in this error (if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled).
</listitem>
<listitem>
<para>
<!-- ext spec. p. 41: this new error for clCreateContext
applies to clCreateContextFromType (see comments above) -->
<errorname>CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR</errorname> if the
<citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled and if a context was specified by any of the following
means:
</para>
<itemizedlist mark="disc">
<listitem>
Context specified for an EGL-based OpenGL ES or OpenGL implementation
by setting the attributes <constant>CL_GL_CONTEXT_KHR</constant> and
<constant>CL_EGL_DISPLAY_KHR</constant>.
</listitem>
<listitem>
Context was specified for a GLX-based OpenGL implementation by
setting the attributes <constant>CL_GL_CONTEXT_KHR</constant> and
<constant>CL_GLX_DISPLAY_KHR</constant>.
</listitem>
<listitem>
Context was specified for a WGL-based OpenGL implementation by
setting the attributes <constant>CL_GL_CONTEXT_KHR</constant> and
<constant>CL_WGL_HDC_KHR</constant>.
</listitem>
</itemizedlist>
and any of the following conditions hold:
<itemizedlist mark="disc">
<listitem>
The specified display and context attributes do not identify a valid
OpenGL or OpenGL ES context.
</listitem>
<listitem>
The specified context does not support buffer and renderbuffer objects.
</listitem>
<listitem>
The specified context is not compatible with the OpenCL context being
created (for example, it exists in a physically distinct address space,
such as another hardware device, or does not support sharing data with
OpenCL due to implementation restrictions).
</listitem>
</itemizedlist>
</listitem>
<listitem>
<!-- ext spec. p. 42, continuing the description of this new error value for
clCreateContext, which may apply to clCreateContextFromType (see the comments
above) --> <errorname>CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR</errorname>
if a share group was specified for a CGL-based OpenGL implementation by
setting the attribute <constant>CL_CGL_SHAREGROUP_KHR</constant>, and the
specified share group does not identify a valid CGL share group object (only if
the <citerefentry><refentrytitle>cl_khr_gl_sharing</refentrytitle></citerefentry>
extension is enabled).
</listitem>
<listitem>
<!-- ext. spec. p. 85, section 9.10.4 -->
<errorname>CL_INVALID_DX9_MEDIA_ADAPTER_KHR</errorname> if the
media adapter specified for interoperability is not compatible with
the devices against which the context is to be created (only if the
<citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry>
extension is supported).
</listitem>
<listitem>
<!-- ext. spec p. 86, section 9.10.5 --> <errorname>CL_INVALID_ADAPTER_KHR</errorname> if
any of the values of the properties <constant>CL_CONTEXT_ADAPTER_D3D9_KHR</constant>,
<constant>CL_CONTEXT_ADAPTER_D3D9EX_KHR</constant> or
<constant>CL_CONTEXT_ADAPTER_DXVA_KHR</constant> is non-NULL and
does not specify a valid media adapter with which the cl_device_ids
against which this context is to be created may interoperate. (only if the
<citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry>
extension is supported).
</listitem>
<listitem>
<!-- ext. spec p. 86, section 9.10.5 -->
<errorname>CL_INVALID_OPERATION</errorname> if interoperability is
specified by setting <constant>CL_CONTEXT_ADAPTER_D3D9_KHR</constant>,
<constant>CL_CONTEXT_ADAPTER_D3D9EX_KHR</constant> or
<constant>CL_CONTEXT_ADAPTER_DXVA_KHR</constant> to a non-NULL value, and
interoperability with another graphics API is also specified. (only if the
<citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry>
extension is supported).
</listitem>
<listitem>
<!-- ext. spec p. 99, section 9.11.4 -->
<errorname>CL_INVALID_D3D11_DEVICE_KHR</errorname> if the Direct3D
11 device specified for interoperability is not compatible with
the devices against which the context is to be created (only if the
<citerefentry><refentrytitle>cl_khr_d3d11_sharing</refentrytitle></citerefentry>
extension is supported).
</listitem>
<listitem>
<!-- ext. spec p. 100, section 9.11.5 --> <errorname>CL_INVALID_OPERATION</errorname>
if Direct3D 11 interoperability is specified by setting
<constant>CL_INVALID_D3D11_DEVICE_KHR</constant> to a non-NULL value, and
interoperability with another graphics API is also specified. (only if the
<citerefentry><refentrytitle>cl_khr_d3d11_sharing</refentrytitle></citerefentry>
extension is supported).
</listitem>
<listitem>
<!-- ext. spec p. 100, section 9.11.5 -->
<errorname>CL_INVALID_D3D11_DEVICE_KHR</errorname> if the value of the property
<constant>CL_CONTEXT_D3D11_DEVICE_KHR</constant> is non-NULL and does not specify
a valid Direct3D 11 device with which the <varname>cl_device_ids</varname>
against which this context is to be created may interoperate. (only if the
<citerefentry><refentrytitle>cl_khr_d3d11_sharing</refentrytitle></citerefentry>
extension is supported).
</listitem>
</itemizedlist>
</refsect1>
<!-- ================================ EXAMPLE -->
<!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE -->
<!--
<refsect2 id="example1">
<title>
Example
</title>
<informaltable frame="none">
<tgroup cols="1" align="left" colsep="0" rowsep="0">
<colspec colname="col1" colnum="1" />
<tbody>
<row>
<entry>Example goes here - it will be set in "code" type with white space preserved.</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect2> -->
<!-- ================================ SPECIFICATION -->
<!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page
-->
<refsect1 id="specification"><title>Specification</title>
<para>
<imageobject>
<imagedata fileref="pdficon_small1.gif" format="gif" />
</imageobject>
<olink uri="clCreateContextFromType">OpenCL Specification</olink>
</para>
</refsect1>
<!-- ================================ ALSO SEE -->
<refsect1 id="seealso"><title>Also see</title>
<para>
<citerefentry><refentrytitle>clCreateContext</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clGetContextInfo</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clReleaseContext</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clRetainContext</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>clGetContextInfo</refentrytitle></citerefentry>,
<citerefentry href="classDiagram"><refentrytitle>Cardinality Diagram</refentrytitle></citerefentry>
</para>
</refsect1>
<!-- ================================ COPYRIGHT -->
<!-- Content included from copyright.inc.xsl -->
<refsect3 id="Copyright"><title></title>
<imageobject>
<imagedata fileref="KhronosLogo.jpg" format="jpg" />
</imageobject>
<para />
</refsect3>
<!-- 23-Oct-2011 -->
</refentry>
|
