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Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.61 by root, Sat Apr 28 13:31:40 2012 UTC vs.
Revision 1.81 by root, Sat May 5 14:17:39 2012 UTC

…		…
28	specific device ("compiling and linking"), also binary programs. For each	28	specific device ("compiling and linking"), also binary programs. For each
29	kernel function in a program you can then create an OpenCL::Kernel object	29	kernel function in a program you can then create an OpenCL::Kernel object
30	which represents basically a function call with argument values.	30	which represents basically a function call with argument values.
31		31
32	OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat	32	OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat
33	memory areas, think arrays or structs) and OpenCL::Image objects (think 2d	33	memory areas, think arrays or structs) and OpenCL::Image objects (think 2D
34	or 3d array) for bulk data and input and output for kernels.	34	or 3D array) for bulk data and input and output for kernels.
35		35
36	OpenCL::Sampler objects, which are kind of like texture filter modes in	36	OpenCL::Sampler objects, which are kind of like texture filter modes in
37	OpenGL.	37	OpenGL.
38		38
39	OpenCL::Queue objects - command queues, which allow you to submit memory	39	OpenCL::Queue objects - command queues, which allow you to submit memory
…		…
43		43
44	OpenCL::Event objects are used to signal when something is complete.	44	OpenCL::Event objects are used to signal when something is complete.
45		45
46	=head2 HELPFUL RESOURCES	46	=head2 HELPFUL RESOURCES
47		47
48	The OpenCL specs used to develop this module:	48	The OpenCL specs used to develop this module - download these and keept
		49	hema round, they are required reference material:
49		50
50	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf	51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf
51	http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf	52	http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf
52	http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf	53	http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf
53		54
…		…
210		211
211	# wait for the last event to complete	212	# wait for the last event to complete
212	$ev->wait;	213	$ev->wait;
213		214
214	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia	215	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia
215	set tunnel effect.	216	set flight effect.
216		217
217	This is quite a long example to get you going.	218	This is quite a long example to get you going - you can also download it
		219	from L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>.
218		220
219	use OpenGL ":all";	221	use OpenGL ":all";
220	use OpenCL;	222	use OpenCL;
221		223
		224	my $S = $ARGV[0] || 256; # window/texture size, smaller is faster
		225
222	# open a window and create a gl texture	226	# open a window and create a gl texture
223	OpenGL::glpOpenWindow width => 256, height => 256;	227	OpenGL::glpOpenWindow width => $S, height => $S;
224	my $texid = glGenTextures_p 1;	228	my $texid = glGenTextures_p 1;
225	glBindTexture GL_TEXTURE_2D, $texid;	229	glBindTexture GL_TEXTURE_2D, $texid;
226	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;	230	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, $S, $S, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;
227		231
228	# find and use the first opencl device that let's us get a shared opengl context	232	# find and use the first opencl device that let's us get a shared opengl context
229	my $platform;	233	my $platform;
230	my $dev;	234	my $dev;
231	my $ctx;	235	my $ctx;
…		…
250	# now the boring opencl code	254	# now the boring opencl code
251	my $src = <<EOF;	255	my $src = <<EOF;
252	kernel void	256	kernel void
253	juliatunnel (write_only image2d_t img, float time)	257	juliatunnel (write_only image2d_t img, float time)
254	{	258	{
255	float2 p = (float2)(get_global_id (0), get_global_id (1)) / 256.f * 2.f - 1.f;	259	int2 xy = (int2)(get_global_id (0), get_global_id (1));
		260	float2 p = convert_float2 (xy) / $S.f * 2.f - 1.f;
256		261
257	float2 m = (float2)(1.f, p.y) / fabs (p.x);	262	float2 m = (float2)(1.f, p.y) / fabs (p.x); // tunnel
258	m.x = fabs (fmod (m.x + time * 0.05f, 4.f)) - 2.f;	263	m.x = fabs (fmod (m.x + time * 0.05f, 4.f) - 2.f);
259		264
260	float2 z = m;	265	float2 z = m;
261	float2 c = (float2)(sin (time * 0.05005), cos (time * 0.06001));	266	float2 c = (float2)(sin (time * 0.01133f), cos (time * 0.02521f));
262		267
263	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i)	268	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i) // standard julia
264	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;	269	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
265		270
266	float3 colour = (float3)(z.x, z.y, z.x * z.y);	271	float3 colour = (float3)(z.x, z.y, atan2 (z.y, z.x));
267	write_imagef (img, (int2)(get_global_id (0), get_global_id (1)), (float4)(colour * p.x * p.x, 1.));	272	write_imagef (img, xy, (float4)(colour * p.x * p.x, 1.));
268	}	273	}
269	EOF	274	EOF
270		275
271	my $prog = $ctx->build_program ($src);	276	my $prog = $ctx->build_program ($src);
272	my $kernel = $prog->kernel ("juliatunnel");	277	my $kernel = $prog->kernel ("juliatunnel");
…		…
276	for (my $time; ; ++$time) {	281	for (my $time; ; ++$time) {
277	# acquire objects from opengl	282	# acquire objects from opengl
278	$queue->acquire_gl_objects ([$tex]);	283	$queue->acquire_gl_objects ([$tex]);
279		284
280	# configure and run our kernel	285	# configure and run our kernel
281	$kernel->set_image2d (0, $tex);	286	$kernel->setf ("mf", $tex, $time*2); # mf = memory object, float
282	$kernel->set_float (1, $time);
283	$queue->nd_range_kernel ($kernel, undef, [256, 256], undef);	287	$queue->nd_range_kernel ($kernel, undef, [$S, $S], undef);
284		288
285	# release objects to opengl again	289	# release objects to opengl again
286	$queue->release_gl_objects ([$tex]);	290	$queue->release_gl_objects ([$tex]);
287		291
288	# wait	292	# wait
…		…
302	glXSwapBuffers;	306	glXSwapBuffers;
303		307
304	select undef, undef, undef, 1/60;	308	select undef, undef, undef, 1/60;
305	}	309	}
306		310
		311	=head2 How to modify the previous example to not rely on GL sharing.
		312
		313	For those poor souls with only a sucky CPU OpenCL implementation, you
		314	currently have to read the image into some perl scalar, and then modify a
		315	texture or use glDrawPixels or so).
		316
		317	First, when you don't need gl sharing, you can create the context much simpler:
		318
		319	$ctx = $platform->context (undef, [$dev])
		320
		321	To use a texture, you would modify the above example by creating an
		322	OpenCL::Image manually instead of deriving it from a texture:
		323
		324	my $tex = $ctx->image2d (OpenCL::MEM_WRITE_ONLY, OpenCL::RGBA, OpenCL::UNORM_INT8, $S, $S);
		325
		326	And in the draw loop, intead of acquire_gl_objects/release_gl_objects, you
		327	would read the image2d after the kernel has written it:
		328
		329	$queue->read_image ($tex, 0, 0, 0, 0, $S, $S, 1, 0, 0, my $data);
		330
		331	And then you would upload the pixel data to the texture (or use glDrawPixels):
		332
		333	glTexSubImage2D_s GL_TEXTURE_2D, 0, 0, 0, $S, $S, GL_RGBA, GL_UNSIGNED_BYTE, $data;
		334
		335	The fully modified example can be found at
		336	L<http://cvs.schmorp.de/OpenCL/examples/juliaflight-nosharing>.
		337
		338	=head2 Julia sets look soooo 80ies.
		339
		340	Then colour them differently, e.g. using orbit traps! Replace the loop and
		341	colour calculation from the previous examples by this:
		342
		343	float2 dm = (float2)(1.f, 1.f);
		344
		345	for (int i = 0; i < 25; ++i)
		346	{
		347	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
		348	dm = fmin (dm, (float2)(fabs (dot (z, z) - 1.f), fabs (z.x - 1.f)));
		349	}
		350
		351	float3 colour = (float3)(dm.x * dm.y, dm.x * dm.y, dm.x);
		352
		353	Also try C<-10.f> instead of C<-1.f>.
		354
307	=head1 DOCUMENTATION	355	=head1 DOCUMENTATION
308		356
309	=head2 BASIC CONVENTIONS	357	=head2 BASIC CONVENTIONS
310		358
311	This is not a one-to-one C-style translation of OpenCL to Perl - instead	359	This is not a one-to-one C-style translation of OpenCL to Perl - instead
…		…
340		388
341	=item * When enqueuing commands, if the enqueue method is called in void	389	=item * When enqueuing commands, if the enqueue method is called in void
342	context, no event is created. In all other contexts an event is returned	390	context, no event is created. In all other contexts an event is returned
343	by the method.	391	by the method.
344		392
345	=item * This module expects all functions to return C<CL_SUCCESS>. If any	393	=item * This module expects all functions to return C<OpenCL::SUCCESS>. If any
346	other status is returned the function will throw an exception, so you	394	other status is returned the function will throw an exception, so you
347	don't normally have to to any error checking.	395	don't normally have to to any error checking.
348		396
349	=back	397	=back
		398
		399	=head2 CONSTANTS
		400
		401	All C<CL_xxx> constants that this module supports are always available
		402	in the C<OpenCL> namespace as C<OpenCL::xxx> (i.e. without the C<CL_>
		403	prefix). Constants which are not defined in the header files used during
		404	compilation, or otherwise are not available, will have the value C<-1>.
		405
		406	The latest version of this module knows and exports the constants
		407	listed in L<http://cvs.schmorp.de/OpenCL/constiv.h>.
		408
		409	=head2 OPENCL 1.1 VS. OPENCL 1.2
		410
		411	This module supports both OpenCL version 1.1 and 1.2, although the OpenCL
		412	1.2 interface hasn't been tested much for lack of availability of an
		413	actual implementation.
		414
		415	Every function or method in this manual page that interfaces to a
		416	particular OpenCL function has a link to the its C manual page.
		417
		418	If the link contains a F<1.1>, then this function is an OpenCL 1.1
		419	function. Most but not all also exist in OpenCL 1.2, and this module
		420	tries to emulate the missing ones for you, when told to do so at
		421	compiletime. You can check whether a function was removed in OpenCL 1.2 by
		422	replacing the F<1.1> component in the URL by F<1.2>.
		423
		424	If the link contains a F<1.2>, then this is a OpenCL 1.2-only
		425	function. Even if the module was compiled with OpenCL 1.2 header files
		426	and has an 1.2 OpenCL library, calling such a function on a platform that
		427	doesn't implement 1.2 causes undefined behaviour, usually a crash (But
		428	this is not guaranteed).
		429
		430	You can find out whether this module was compiled to prefer 1.1
		431	functionality by ooking at C<OpenCL::PREFER_1_1> - if it is true, then
		432	1.1 functions generally are implemented using 1.1 OpenCL functions. If it
		433	is false, then 1.1 functions missing from 1.2 are emulated by calling 1.2
		434	fucntions.
		435
		436	This is a somewhat sorry state of affairs, but the Khronos group choose to
		437	make every release of OpenCL source and binary incompatible with previous
		438	releases.
350		439
351	=head2 PERL AND OPENCL TYPES	440	=head2 PERL AND OPENCL TYPES
352		441
353	This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack	442	This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack
354	format equivalents:	443	format equivalents:
…		…
386	OpenCL can generate a number of (potentially) asynchronous events, for	475	OpenCL can generate a number of (potentially) asynchronous events, for
387	example, after compiling a program, to signal a context-related error or,	476	example, after compiling a program, to signal a context-related error or,
388	perhaps most important, to signal completion of queued jobs (by setting	477	perhaps most important, to signal completion of queued jobs (by setting
389	callbacks on OpenCL::Event objects).	478	callbacks on OpenCL::Event objects).
390		479
		480	The OpenCL module converts all these callbacks into events - you can
		481	still register callbacks, but they are not executed when your OpenCL
		482	implementation calls the actual callback, but only later. Therefore, none
		483	of the limitations of OpenCL callbacks apply to the perl implementation:
		484	it is perfectly safe to make blocking operations from event callbacks, and
		485	enqueued operations don't need to be flushed.
		486
391	To facilitate this, this module maintains an event queue - each	487	To facilitate this, this module maintains an event queue - each
392	time an asynchronous event happens, it is queued, and perl will be	488	time an asynchronous event happens, it is queued, and perl will be
393	interrupted. This is implemented via the L<Async::Interrupt> module. In	489	interrupted. This is implemented via the L<Async::Interrupt> module. In
394	addition, this module has L<AnyEvent> support, so it can seamlessly	490	addition, this module has L<AnyEvent> support, so it can seamlessly
395	integrate itself into many event loops.	491	integrate itself into many event loops.
396		492
397	Since this module is a bit hard to understand, here are some case examples:	493	Since L<Async::Interrupt> is a bit hard to understand, here are some case examples:
398		494
399	=head3 Don't use callbacks.	495	=head3 Don't use callbacks.
400		496
401	When your program never uses any callbacks, then there will never be any	497	When your program never uses any callbacks, then there will never be any
402	notifications you need to take care of, and therefore no need to worry	498	notifications you need to take care of, and therefore no need to worry
…		…
493	=cut	589	=cut
494		590
495	package OpenCL;	591	package OpenCL;
496		592
497	use common::sense;	593	use common::sense;
		594	use Carp ();
498	use Async::Interrupt ();	595	use Async::Interrupt ();
499		596
500	our $POLL_FUNC; # set by XS	597	our $POLL_FUNC; # set by XS
501		598
502	BEGIN {	599	BEGIN {
503	our $VERSION = '0.97';	600	our $VERSION = '0.99';
504		601
505	require XSLoader;	602	require XSLoader;
506	XSLoader::load (__PACKAGE__, $VERSION);	603	XSLoader::load (__PACKAGE__, $VERSION);
507		604
508	@OpenCL::Platform::ISA =	605	@OpenCL::Platform::ISA =
…		…
513	@OpenCL::Sampler::ISA =	610	@OpenCL::Sampler::ISA =
514	@OpenCL::Program::ISA =	611	@OpenCL::Program::ISA =
515	@OpenCL::Kernel::ISA =	612	@OpenCL::Kernel::ISA =
516	@OpenCL::Event::ISA = OpenCL::Object::;	613	@OpenCL::Event::ISA = OpenCL::Object::;
517		614
		615	@OpenCL::SubDevice::ISA = OpenCL::Device::;
		616
518	@OpenCL::Buffer::ISA =	617	@OpenCL::Buffer::ISA =
519	@OpenCL::Image::ISA = OpenCL::Memory::;	618	@OpenCL::Image::ISA = OpenCL::Memory::;
520		619
521	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;	620	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
522		621
…		…
526	@OpenCL::Image1D::ISA =	625	@OpenCL::Image1D::ISA =
527	@OpenCL::Image1DArray::ISA =	626	@OpenCL::Image1DArray::ISA =
528	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;	627	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
529		628
530	@OpenCL::UserEvent::ISA = OpenCL::Event::;	629	@OpenCL::UserEvent::ISA = OpenCL::Event::;
		630
		631	@OpenCL::MappedBuffer::ISA =
		632	@OpenCL::MappedImage::ISA = OpenCL::Mapped::;
531	}	633	}
532		634
533	=head2 THE OpenCL PACKAGE	635	=head2 THE OpenCL PACKAGE
534		636
535	=over 4	637	=over 4
…		…
539	The last error returned by a function - it's only valid after an error occured	641	The last error returned by a function - it's only valid after an error occured
540	and before calling another OpenCL function.	642	and before calling another OpenCL function.
541		643
542	=item $str = OpenCL::err2str [$errval]	644	=item $str = OpenCL::err2str [$errval]
543		645
544	Converts an error value into a human readable string. IF no error value is	646	Converts an error value into a human readable string. If no error value is
545	given, then the last error will be used (as returned by OpenCL::errno).	647	given, then the last error will be used (as returned by OpenCL::errno).
		648
		649	The latest version of this module knows the error constants
		650	listed in L<http://cvs.schmorp.de/OpenCL/errstr.h>.
546		651
547	=item $str = OpenCL::enum2str $enum	652	=item $str = OpenCL::enum2str $enum
548		653
549	Converts most enum values (of parameter names, image format constants,	654	Converts most enum values (of parameter names, image format constants,
550	object types, addressing and filter modes, command types etc.) into a	655	object types, addressing and filter modes, command types etc.) into a
551	human readable string. When confronted with some random integer it can be	656	human readable string. When confronted with some random integer it can be
552	very helpful to pass it through this function to maybe get some readable	657	very helpful to pass it through this function to maybe get some readable
553	string out of it.	658	string out of it.
554		659
		660	The latest version of this module knows the enumaration constants
		661	listed in L<http://cvs.schmorp.de/OpenCL/errstr.h>.
		662
555	=item @platforms = OpenCL::platforms	663	=item @platforms = OpenCL::platforms
556		664
557	Returns all available OpenCL::Platform objects.	665	Returns all available OpenCL::Platform objects.
558		666
559	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>	667	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
560		668
561	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr	669	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr
562		670
563	Tries to create a context from a default device and platform type - never worked for me.	671	Tries to create a context from a default device and platform type - never worked for me.
		672	Consider using C<< $platform->context_from_type >> instead.
		673
		674	type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU, OpenCL::DEVICE_TYPE_GPU,
		675	OpenCL::DEVICE_TYPE_ACCELERATOR, OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
564		676
565	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	677	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
566		678
567	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)	679	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
568		680
569	Create a new OpenCL::Context object using the given device object(s). This	681	Create a new OpenCL::Context object using the given device object(s).
570	function isn't implemented yet, use C<< $platform->context >> instead.	682	Consider using C<< $platform->context >> instead.
571		683
572	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>	684	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
573		685
574	=item OpenCL::wait_for_events $wait_events...	686	=item OpenCL::wait_for_events $wait_events...
575		687
…		…
656	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	768	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
657		769
658	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)	770	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
659		771
660	Create a new OpenCL::Context object using the given device object(s)- a	772	Create a new OpenCL::Context object using the given device object(s)- a
661	CL_CONTEXT_PLATFORM property is supplied automatically.	773	OpenCL::CONTEXT_PLATFORM property is supplied automatically.
662		774
663	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>	775	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
664		776
665	=item $packed_value = $platform->info ($name)	777	=item $packed_value = $platform->info ($name)
666		778
…		…
682		794
683	=for gengetinfo begin platform	795	=for gengetinfo begin platform
684		796
685	=item $string = $platform->profile	797	=item $string = $platform->profile
686		798
687	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.	799	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_PROFILE> and returns the result.
688		800
689	=item $string = $platform->version	801	=item $string = $platform->version
690		802
691	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result.	803	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VERSION> and returns the result.
692		804
693	=item $string = $platform->name	805	=item $string = $platform->name
694		806
695	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result.	807	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_NAME> and returns the result.
696		808
697	=item $string = $platform->vendor	809	=item $string = $platform->vendor
698		810
699	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result.	811	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VENDOR> and returns the result.
700		812
701	=item $string = $platform->extensions	813	=item $string = $platform->extensions
702		814
703	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result.	815	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_EXTENSIONS> and returns the result.
704		816
705	=for gengetinfo end platform	817	=for gengetinfo end platform
706		818
707	=back	819	=back
708		820
…		…
712		824
713	=item $packed_value = $device->info ($name)	825	=item $packed_value = $device->info ($name)
714		826
715	See C<< $platform->info >> for details.	827	See C<< $platform->info >> for details.
716		828
		829	type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU,
		830	OpenCL::DEVICE_TYPE_GPU, OpenCL::DEVICE_TYPE_ACCELERATOR,
		831	OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
		832
		833	fp_config: OpenCL::FP_DENORM, OpenCL::FP_INF_NAN, OpenCL::FP_ROUND_TO_NEAREST,
		834	OpenCL::FP_ROUND_TO_ZERO, OpenCL::FP_ROUND_TO_INF, OpenCL::FP_FMA,
		835	OpenCL::FP_SOFT_FLOAT, OpenCL::FP_CORRECTLY_ROUNDED_DIVIDE_SQRT.
		836
		837	mem_cache_type: OpenCL::NONE, OpenCL::READ_ONLY_CACHE, OpenCL::READ_WRITE_CACHE.
		838
		839	local_mem_type: OpenCL::LOCAL, OpenCL::GLOBAL.
		840
		841	exec_capabilities: OpenCL::EXEC_KERNEL, OpenCL::EXEC_NATIVE_KERNEL.
		842
		843	command_queue_properties: OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE,
		844	OpenCL::QUEUE_PROFILING_ENABLE.
		845
		846	partition_properties: OpenCL::DEVICE_PARTITION_EQUALLY,
		847	OpenCL::DEVICE_PARTITION_BY_COUNTS, OpenCL::DEVICE_PARTITION_BY_COUNTS_LIST_END,
		848	OpenCL::DEVICE_PARTITION_BY_AFFINITY_DOMAIN.
		849
		850	affinity_domain: OpenCL::DEVICE_AFFINITY_DOMAIN_NUMA,
		851	OpenCL::DEVICE_AFFINITY_DOMAIN_L4_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L3_CACHE,
		852	OpenCL::DEVICE_AFFINITY_DOMAIN_L2_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L1_CACHE,
		853	OpenCL::DEVICE_AFFINITY_DOMAIN_NEXT_PARTITIONABLE.
		854
717	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>	855	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>
718		856
		857	=item @devices = $device->sub_devices (\@properties)
		858
		859	Creates OpencL::SubDevice objects by partitioning an existing device.
		860
		861	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateSubDevices.html>
		862
719	=for gengetinfo begin device	863	=for gengetinfo begin device
720		864
721	=item $device_type = $device->type	865	=item $device_type = $device->type
722		866
723	Calls C<clGetDeviceInfo> with C<CL_DEVICE_TYPE> and returns the result.	867	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_TYPE> and returns the result.
724		868
725	=item $uint = $device->vendor_id	869	=item $uint = $device->vendor_id
726		870
727	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR_ID> and returns the result.	871	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR_ID> and returns the result.
728		872
729	=item $uint = $device->max_compute_units	873	=item $uint = $device->max_compute_units
730		874
731	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_COMPUTE_UNITS> and returns the result.	875	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_COMPUTE_UNITS> and returns the result.
732		876
733	=item $uint = $device->max_work_item_dimensions	877	=item $uint = $device->max_work_item_dimensions
734		878
735	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.	879	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.
736		880
737	=item $int = $device->max_work_group_size	881	=item $int = $device->max_work_group_size
738		882
739	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.	883	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.
740		884
741	=item @ints = $device->max_work_item_sizes	885	=item @ints = $device->max_work_item_sizes
742		886
743	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.	887	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.
744		888
745	=item $uint = $device->preferred_vector_width_char	889	=item $uint = $device->preferred_vector_width_char
746		890
747	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.	891	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.
748		892
749	=item $uint = $device->preferred_vector_width_short	893	=item $uint = $device->preferred_vector_width_short
750		894
751	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.	895	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.
752		896
753	=item $uint = $device->preferred_vector_width_int	897	=item $uint = $device->preferred_vector_width_int
754		898
755	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.	899	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.
756		900
757	=item $uint = $device->preferred_vector_width_long	901	=item $uint = $device->preferred_vector_width_long
758		902
759	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.	903	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.
760		904
761	=item $uint = $device->preferred_vector_width_float	905	=item $uint = $device->preferred_vector_width_float
762		906
763	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.	907	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.
764		908
765	=item $uint = $device->preferred_vector_width_double	909	=item $uint = $device->preferred_vector_width_double
766		910
767	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.	911	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.
768		912
769	=item $uint = $device->max_clock_frequency	913	=item $uint = $device->max_clock_frequency
770		914
771	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.	915	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.
772		916
773	=item $bitfield = $device->address_bits	917	=item $bitfield = $device->address_bits
774		918
775	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ADDRESS_BITS> and returns the result.	919	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ADDRESS_BITS> and returns the result.
776		920
777	=item $uint = $device->max_read_image_args	921	=item $uint = $device->max_read_image_args
778		922
779	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.	923	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.
780		924
781	=item $uint = $device->max_write_image_args	925	=item $uint = $device->max_write_image_args
782		926
783	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.	927	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.
784		928
785	=item $ulong = $device->max_mem_alloc_size	929	=item $ulong = $device->max_mem_alloc_size
786		930
787	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.	931	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.
788		932
789	=item $int = $device->image2d_max_width	933	=item $int = $device->image2d_max_width
790		934
791	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.	935	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.
792		936
793	=item $int = $device->image2d_max_height	937	=item $int = $device->image2d_max_height
794		938
795	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.	939	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.
796		940
797	=item $int = $device->image3d_max_width	941	=item $int = $device->image3d_max_width
798		942
799	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.	943	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.
800		944
801	=item $int = $device->image3d_max_height	945	=item $int = $device->image3d_max_height
802		946
803	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.	947	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.
804		948
805	=item $int = $device->image3d_max_depth	949	=item $int = $device->image3d_max_depth
806		950
807	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.	951	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.
808		952
809	=item $uint = $device->image_support	953	=item $uint = $device->image_support
810		954
811	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE_SUPPORT> and returns the result.	955	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE_SUPPORT> and returns the result.
812		956
813	=item $int = $device->max_parameter_size	957	=item $int = $device->max_parameter_size
814		958
815	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_PARAMETER_SIZE> and returns the result.	959	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_PARAMETER_SIZE> and returns the result.
816		960
817	=item $uint = $device->max_samplers	961	=item $uint = $device->max_samplers
818		962
819	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_SAMPLERS> and returns the result.	963	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_SAMPLERS> and returns the result.
820		964
821	=item $uint = $device->mem_base_addr_align	965	=item $uint = $device->mem_base_addr_align
822		966
823	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.	967	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.
824		968
825	=item $uint = $device->min_data_type_align_size	969	=item $uint = $device->min_data_type_align_size
826		970
827	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.	971	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.
828		972
829	=item $device_fp_config = $device->single_fp_config	973	=item $device_fp_config = $device->single_fp_config
830		974
831	Calls C<clGetDeviceInfo> with C<CL_DEVICE_SINGLE_FP_CONFIG> and returns the result.	975	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_SINGLE_FP_CONFIG> and returns the result.
832		976
833	=item $device_mem_cache_type = $device->global_mem_cache_type	977	=item $device_mem_cache_type = $device->global_mem_cache_type
834		978
835	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.	979	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.
836		980
837	=item $uint = $device->global_mem_cacheline_size	981	=item $uint = $device->global_mem_cacheline_size
838		982
839	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.	983	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.
840		984
841	=item $ulong = $device->global_mem_cache_size	985	=item $ulong = $device->global_mem_cache_size
842		986
843	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.	987	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.
844		988
845	=item $ulong = $device->global_mem_size	989	=item $ulong = $device->global_mem_size
846		990
847	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_SIZE> and returns the result.	991	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_SIZE> and returns the result.
848		992
849	=item $ulong = $device->max_constant_buffer_size	993	=item $ulong = $device->max_constant_buffer_size
850		994
851	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.	995	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.
852		996
853	=item $uint = $device->max_constant_args	997	=item $uint = $device->max_constant_args
854		998
855	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_ARGS> and returns the result.	999	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_ARGS> and returns the result.
856		1000
857	=item $device_local_mem_type = $device->local_mem_type	1001	=item $device_local_mem_type = $device->local_mem_type
858		1002
859	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_TYPE> and returns the result.	1003	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_TYPE> and returns the result.
860		1004
861	=item $ulong = $device->local_mem_size	1005	=item $ulong = $device->local_mem_size
862		1006
863	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_SIZE> and returns the result.	1007	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_SIZE> and returns the result.
864		1008
865	=item $boolean = $device->error_correction_support	1009	=item $boolean = $device->error_correction_support
866		1010
867	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.	1011	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.
868		1012
869	=item $int = $device->profiling_timer_resolution	1013	=item $int = $device->profiling_timer_resolution
870		1014
871	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.	1015	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.
872		1016
873	=item $boolean = $device->endian_little	1017	=item $boolean = $device->endian_little
874		1018
875	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ENDIAN_LITTLE> and returns the result.	1019	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ENDIAN_LITTLE> and returns the result.
876		1020
877	=item $boolean = $device->available	1021	=item $boolean = $device->available
878		1022
879	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AVAILABLE> and returns the result.	1023	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AVAILABLE> and returns the result.
880		1024
881	=item $boolean = $device->compiler_available	1025	=item $boolean = $device->compiler_available
882		1026
883	Calls C<clGetDeviceInfo> with C<CL_DEVICE_COMPILER_AVAILABLE> and returns the result.	1027	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_COMPILER_AVAILABLE> and returns the result.
884		1028
885	=item $device_exec_capabilities = $device->execution_capabilities	1029	=item $device_exec_capabilities = $device->execution_capabilities
886		1030
887	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXECUTION_CAPABILITIES> and returns the result.	1031	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXECUTION_CAPABILITIES> and returns the result.
888		1032
889	=item $command_queue_properties = $device->properties	1033	=item $command_queue_properties = $device->properties
890		1034
891	Calls C<clGetDeviceInfo> with C<CL_DEVICE_QUEUE_PROPERTIES> and returns the result.	1035	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_QUEUE_PROPERTIES> and returns the result.
892		1036
893	=item $ = $device->platform	1037	=item $ = $device->platform
894		1038
895	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PLATFORM> and returns the result.	1039	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PLATFORM> and returns the result.
896		1040
897	=item $string = $device->name	1041	=item $string = $device->name
898		1042
899	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NAME> and returns the result.	1043	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NAME> and returns the result.
900		1044
901	=item $string = $device->vendor	1045	=item $string = $device->vendor
902		1046
903	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR> and returns the result.	1047	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR> and returns the result.
904		1048
905	=item $string = $device->driver_version	1049	=item $string = $device->driver_version
906		1050
907	Calls C<clGetDeviceInfo> with C<CL_DRIVER_VERSION> and returns the result.	1051	Calls C<clGetDeviceInfo> with C<OpenCL::DRIVER_VERSION> and returns the result.
908		1052
909	=item $string = $device->profile	1053	=item $string = $device->profile
910		1054
911	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILE> and returns the result.	1055	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILE> and returns the result.
912		1056
913	=item $string = $device->version	1057	=item $string = $device->version
914		1058
915	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VERSION> and returns the result.	1059	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VERSION> and returns the result.
916		1060
917	=item $string = $device->extensions	1061	=item $string = $device->extensions
918		1062
919	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXTENSIONS> and returns the result.	1063	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXTENSIONS> and returns the result.
920		1064
921	=item $uint = $device->preferred_vector_width_half	1065	=item $uint = $device->preferred_vector_width_half
922		1066
923	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.	1067	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.
924		1068
925	=item $uint = $device->native_vector_width_char	1069	=item $uint = $device->native_vector_width_char
926		1070
927	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.	1071	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.
928		1072
929	=item $uint = $device->native_vector_width_short	1073	=item $uint = $device->native_vector_width_short
930		1074
931	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.	1075	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.
932		1076
933	=item $uint = $device->native_vector_width_int	1077	=item $uint = $device->native_vector_width_int
934		1078
935	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.	1079	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.
936		1080
937	=item $uint = $device->native_vector_width_long	1081	=item $uint = $device->native_vector_width_long
938		1082
939	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.	1083	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.
940		1084
941	=item $uint = $device->native_vector_width_float	1085	=item $uint = $device->native_vector_width_float
942		1086
943	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.	1087	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.
944		1088
945	=item $uint = $device->native_vector_width_double	1089	=item $uint = $device->native_vector_width_double
946		1090
947	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.	1091	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.
948		1092
949	=item $uint = $device->native_vector_width_half	1093	=item $uint = $device->native_vector_width_half
950		1094
951	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.	1095	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.
952		1096
953	=item $device_fp_config = $device->double_fp_config	1097	=item $device_fp_config = $device->double_fp_config
954		1098
955	Calls C<clGetDeviceInfo> with C<CL_DEVICE_DOUBLE_FP_CONFIG> and returns the result.	1099	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_DOUBLE_FP_CONFIG> and returns the result.
956		1100
957	=item $device_fp_config = $device->half_fp_config	1101	=item $device_fp_config = $device->half_fp_config
958		1102
959	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HALF_FP_CONFIG> and returns the result.	1103	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HALF_FP_CONFIG> and returns the result.
960		1104
961	=item $boolean = $device->host_unified_memory	1105	=item $boolean = $device->host_unified_memory
962		1106
963	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HOST_UNIFIED_MEMORY> and returns the result.	1107	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HOST_UNIFIED_MEMORY> and returns the result.
964		1108
965	=item $device = $device->parent_device_ext	1109	=item $device = $device->parent_device_ext
966		1110
967	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARENT_DEVICE_EXT> and returns the result.	1111	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARENT_DEVICE_EXT> and returns the result.
968		1112
969	=item @device_partition_property_exts = $device->partition_types_ext	1113	=item @device_partition_property_exts = $device->partition_types_ext
970		1114
971	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_TYPES_EXT> and returns the result.	1115	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_TYPES_EXT> and returns the result.
972		1116
973	=item @device_partition_property_exts = $device->affinity_domains_ext	1117	=item @device_partition_property_exts = $device->affinity_domains_ext
974		1118
975	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.	1119	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.
976		1120
977	=item $uint = $device->reference_count_ext	1121	=item $uint = $device->reference_count_ext
978		1122
979	Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT> and returns the result.	1123	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_REFERENCE_COUNT_EXT> and returns the result.
980		1124
981	=item @device_partition_property_exts = $device->partition_style_ext	1125	=item @device_partition_property_exts = $device->partition_style_ext
982		1126
983	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result.	1127	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_STYLE_EXT> and returns the result.
984		1128
985	=for gengetinfo end device	1129	=for gengetinfo end device
986		1130
987	=back	1131	=back
988		1132
989	=head2 THE OpenCL::Context CLASS	1133	=head2 THE OpenCL::Context CLASS
		1134
		1135	An OpenCL::Context is basically a container, or manager, for a number of
		1136	devices of a platform. It is used to create all sorts of secondary objects
		1137	such as buffers, queues, programs and so on.
		1138
		1139	All context creation functions and methods take a list of properties
		1140	(type-value pairs). All property values can be specified as integers -
		1141	some additionally support other types:
		1142
		1143	=over 4
		1144
		1145	=item OpenCL::CONTEXT_PLATFORM
		1146
		1147	Also accepts OpenCL::Platform objects.
		1148
		1149	=item OpenCL::GLX_DISPLAY_KHR
		1150
		1151	Also accepts C<undef>, in which case a deep and troubling hack is engaged
		1152	to find the current glx display (see L<GLX SUPPORT>).
		1153
		1154	=item OpenCL::GL_CONTEXT_KHR
		1155
		1156	Also accepts C<undef>, in which case a deep and troubling hack is engaged
		1157	to find the current glx context (see L<GLX SUPPORT>).
		1158
		1159	=back
990		1160
991	=over 4	1161	=over 4
992		1162
993	=item $prog = $ctx->build_program ($program, $options = "")	1163	=item $prog = $ctx->build_program ($program, $options = "")
994		1164
…		…
1003	=cut	1173	=cut
1004		1174
1005	sub OpenCL::Context::build_program {	1175	sub OpenCL::Context::build_program {
1006	my ($self, $prog, $options) = @_;	1176	my ($self, $prog, $options) = @_;
1007		1177
1008	require Carp;
1009
1010	$prog = $self->program_with_source ($prog)	1178	$prog = $self->program_with_source ($prog)
1011	unless ref $prog;	1179	unless ref $prog;
1012		1180
1013	eval { $prog->build (undef, $options); 1 }	1181	eval { $prog->build (undef, $options); 1 }
1014	or errno == BUILD_PROGRAM_FAILURE	1182	or errno == BUILD_PROGRAM_FAILURE
		1183	or errno == INVALID_BINARY # workaround nvidia bug
1015	or Carp::croak "OpenCL::Context->build_program: " . err2str;	1184	or Carp::croak "OpenCL::Context->build_program: " . err2str;
1016		1185
1017	# we check status for all devices	1186	# we check status for all devices
1018	for my $dev ($self->devices) {	1187	for my $dev ($self->devices) {
1019	$prog->build_status ($dev) == BUILD_SUCCESS	1188	$prog->build_status ($dev) == BUILD_SUCCESS
1020	or Carp::croak ("Building OpenCL program for device '" . $dev->name . "' failed:\n"	1189	or Carp::croak "Building OpenCL program for device '" . $dev->name . "' failed:\n"
1021	. $prog->build_log ($dev));	1190	. $prog->build_log ($dev);
1022	}	1191	}
1023		1192
1024	$prog	1193	$prog
1025	}	1194	}
1026		1195
…		…
1043	=item $buf = $ctx->buffer ($flags, $len)	1212	=item $buf = $ctx->buffer ($flags, $len)
1044		1213
1045	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the	1214	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the
1046	given flags and octet-size.	1215	given flags and octet-size.
1047		1216
		1217	flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_WRITE_ONLY, OpenCL::MEM_READ_ONLY,
		1218	OpenCL::MEM_USE_HOST_PTR, OpenCL::MEM_ALLOC_HOST_PTR, OpenCL::MEM_COPY_HOST_PTR,
		1219	OpenCL::MEM_HOST_WRITE_ONLY, OpenCL::MEM_HOST_READ_ONLY, OpenCL::MEM_HOST_NO_ACCESS.
		1220
1048	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>	1221	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>
1049		1222
1050	=item $buf = $ctx->buffer_sv ($flags, $data)	1223	=item $buf = $ctx->buffer_sv ($flags, $data)
1051		1224
1052	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and	1225	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and
…		…
1055	=item $img = $ctx->image ($self, $flags, $channel_order, $channel_type, $type, $width, $height, $depth = 0, $array_size = 0, $row_pitch = 0, $slice_pitch = 0, $num_mip_level = 0, $num_samples = 0, $*data = &PL_sv_undef)	1228	=item $img = $ctx->image ($self, $flags, $channel_order, $channel_type, $type, $width, $height, $depth = 0, $array_size = 0, $row_pitch = 0, $slice_pitch = 0, $num_mip_level = 0, $num_samples = 0, $*data = &PL_sv_undef)
1056		1229
1057	Creates a new OpenCL::Image object and optionally initialises it with	1230	Creates a new OpenCL::Image object and optionally initialises it with
1058	the given data values.	1231	the given data values.
1059		1232
		1233	channel_order: OpenCL::R, OpenCL::A, OpenCL::RG, OpenCL::RA, OpenCL::RGB,
		1234	OpenCL::RGBA, OpenCL::BGRA, OpenCL::ARGB, OpenCL::INTENSITY, OpenCL::LUMINANCE,
		1235	OpenCL::Rx, OpenCL::RGx, OpenCL::RGBx.
		1236
		1237	channel_type: OpenCL::SNORM_INT8, OpenCL::SNORM_INT16, OpenCL::UNORM_INT8,
		1238	OpenCL::UNORM_INT16, OpenCL::UNORM_SHORT_565, OpenCL::UNORM_SHORT_555,
		1239	OpenCL::UNORM_INT_101010, OpenCL::SIGNED_INT8, OpenCL::SIGNED_INT16,
		1240	OpenCL::SIGNED_INT32, OpenCL::UNSIGNED_INT8, OpenCL::UNSIGNED_INT16,
		1241	OpenCL::UNSIGNED_INT32, OpenCL::HALF_FLOAT, OpenCL::FLOAT.
		1242
		1243	type: OpenCL::MEM_OBJECT_BUFFER, OpenCL::MEM_OBJECT_IMAGE2D,
		1244	OpenCL::MEM_OBJECT_IMAGE3D, OpenCL::MEM_OBJECT_IMAGE2D_ARRAY,
		1245	OpenCL::MEM_OBJECT_IMAGE1D, OpenCL::MEM_OBJECT_IMAGE1D_ARRAY,
		1246	OpenCL::MEM_OBJECT_IMAGE1D_BUFFER.
		1247
1060	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>	1248	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>
1061		1249
1062	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)	1250	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)
1063		1251
1064	Creates a new OpenCL::Image2D object and optionally initialises it with	1252	Creates a new OpenCL::Image2D object and optionally initialises it with
…		…
1076	=item $buffer = $ctx->gl_buffer ($flags, $bufobj)	1264	=item $buffer = $ctx->gl_buffer ($flags, $bufobj)
1077		1265
1078	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given	1266	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given
1079	OpenGL buffer object.	1267	OpenGL buffer object.
1080		1268
		1269	flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_READ_ONLY, OpenCL::MEM_WRITE_ONLY.
		1270
1081	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html	1271	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html
1082		1272
1083	=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)	1273	=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)
1084		1274
1085	Creates a new OpenCL::Image object that refers to the given OpenGL	1275	Creates a new OpenCL::Image object that refers to the given OpenGL
1086	texture object or buffer.	1276	texture object or buffer.
1087		1277
		1278	target: GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_BUFFER,
		1279	GL_TEXTURE_2D, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_3D,
		1280	GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
		1281	GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
		1282	GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
		1283	GL_TEXTURE_RECTANGLE/GL_TEXTURE_RECTANGLE_ARB.
		1284
1088	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html	1285	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html
1089		1286
1090	=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)	1287	=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)
1091		1288
1092	Creates a new OpenCL::Image2D object that refers to the given OpenGL	1289	Creates a new OpenCL::Image2D object that refers to the given OpenGL
…		…
1117		1314
1118	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)	1315	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)
1119		1316
1120	Creates a new OpenCL::Sampler object.	1317	Creates a new OpenCL::Sampler object.
1121		1318
		1319	addressing_mode: OpenCL::ADDRESS_NONE, OpenCL::ADDRESS_CLAMP_TO_EDGE,
		1320	OpenCL::ADDRESS_CLAMP, OpenCL::ADDRESS_REPEAT, OpenCL::ADDRESS_MIRRORED_REPEAT.
		1321
		1322	filter_mode: OpenCL::FILTER_NEAREST, OpenCL::FILTER_LINEAR.
		1323
1122	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>	1324	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>
1123		1325
1124	=item $program = $ctx->program_with_source ($string)	1326	=item $program = $ctx->program_with_source ($string)
1125		1327
1126	Creates a new OpenCL::Program object from the given source code.	1328	Creates a new OpenCL::Program object from the given source code.
1127		1329
1128	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>	1330	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>
1129		1331
		1332	=item ($program, \@status) = $ctx->program_with_binary (\@devices, \@binaries)
		1333
		1334	Creates a new OpenCL::Program object from the given binaries.
		1335
		1336	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithBinary.html>
		1337
		1338	Example: clone an existing program object that contains a successfully
		1339	compiled program, no matter how useless this is.
		1340
		1341	my $clone = $ctx->program_with_binary ([$prog->devices], [$prog->binaries]);
		1342
		1343	=item $program = $ctx->program_with_built_in_kernels (\@devices, $kernel_names)
		1344
		1345	Creates a new OpenCL::Program object from the given built-in kernel names.
		1346
		1347	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateProgramWithBuiltInKernels.html>
		1348
		1349	=item $program = $ctx->link_program (\@devices, $options, \@programs, $cb->($program) = undef)
		1350
		1351	Links all (already compiled) program objects specified in C<@programs>
		1352	together and returns a new OpenCL::Program object with the result.
		1353
		1354	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clLinkProgram.html>
		1355
1130	=item $packed_value = $ctx->info ($name)	1356	=item $packed_value = $ctx->info ($name)
1131		1357
1132	See C<< $platform->info >> for details.	1358	See C<< $platform->info >> for details.
1133		1359
1134	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>	1360	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>
1135		1361
1136	=for gengetinfo begin context	1362	=for gengetinfo begin context
1137		1363
1138	=item $uint = $context->reference_count	1364	=item $uint = $context->reference_count
1139		1365
1140	Calls C<clGetContextInfo> with C<CL_CONTEXT_REFERENCE_COUNT> and returns the result.	1366	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_REFERENCE_COUNT> and returns the result.
1141		1367
1142	=item @devices = $context->devices	1368	=item @devices = $context->devices
1143		1369
1144	Calls C<clGetContextInfo> with C<CL_CONTEXT_DEVICES> and returns the result.	1370	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_DEVICES> and returns the result.
1145		1371
1146	=item @property_ints = $context->properties	1372	=item @property_ints = $context->properties
1147		1373
1148	Calls C<clGetContextInfo> with C<CL_CONTEXT_PROPERTIES> and returns the result.	1374	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_PROPERTIES> and returns the result.
1149		1375
1150	=item $uint = $context->num_devices	1376	=item $uint = $context->num_devices
1151		1377
1152	Calls C<clGetContextInfo> with C<CL_CONTEXT_NUM_DEVICES> and returns the result.	1378	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_NUM_DEVICES> and returns the result.
1153		1379
1154	=for gengetinfo end context	1380	=for gengetinfo end context
1155		1381
1156	=back	1382	=back
1157		1383
…		…
1204		1430
1205	=item $ev = $queue->write_buffer_rect (OpenCL::Memory buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...)	1431	=item $ev = $queue->write_buffer_rect (OpenCL::Memory buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...)
1206		1432
1207	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html	1433	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html
1208		1434
		1435	=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
		1436
		1437	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>
		1438
1209	=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1439	=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
1210		1440
1211	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>	1441	C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL
1212		1442	module uses the image width (and height) to supply default values.
1213	=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
1214		1443
1215	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>	1444	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>
1216		1445
1217	=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1446	=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
1218		1447
		1448	C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL
		1449	module uses the image width (and height) to supply default values.
1219	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>	1450	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>
1220		1451
1221	=item $ev = $queue->copy_image ($src_image, $dst_image, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)	1452	=item $ev = $queue->copy_image ($src_image, $dst_image, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
1222		1453
1223	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>	1454	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>
…		…
1268	reference to an array of local work sizes, with the same number of	1499	reference to an array of local work sizes, with the same number of
1269	elements as \@global_work_size.	1500	elements as \@global_work_size.
1270		1501
1271	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>	1502	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
1272		1503
		1504	=item $ev = $queue->migrate_mem_objects (\@mem_objects, $flags, $wait_events...)
		1505
		1506	Migrates a number of OpenCL::Memory objects to or from the device.
		1507
		1508	flags: OpenCL::MIGRATE_MEM_OBJECT_HOST, OpenCL::MIGRATE_MEM_OBJECT_CONTENT_UNDEFINED
		1509
		1510	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMigrateMemObjects.html>
		1511
1273	=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)	1512	=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)
1274		1513
1275	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired	1514	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired
1276	for subsequent OpenCL usage.	1515	for subsequent OpenCL usage.
1277		1516
…		…
1312		1551
1313	=for gengetinfo begin command_queue	1552	=for gengetinfo begin command_queue
1314		1553
1315	=item $ctx = $command_queue->context	1554	=item $ctx = $command_queue->context
1316		1555
1317	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_CONTEXT> and returns the result.	1556	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_CONTEXT> and returns the result.
1318		1557
1319	=item $device = $command_queue->device	1558	=item $device = $command_queue->device
1320		1559
1321	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_DEVICE> and returns the result.	1560	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_DEVICE> and returns the result.
1322		1561
1323	=item $uint = $command_queue->reference_count	1562	=item $uint = $command_queue->reference_count
1324		1563
1325	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_REFERENCE_COUNT> and returns the result.	1564	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_REFERENCE_COUNT> and returns the result.
1326		1565
1327	=item $command_queue_properties = $command_queue->properties	1566	=item $command_queue_properties = $command_queue->properties
1328		1567
1329	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_PROPERTIES> and returns the result.	1568	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_PROPERTIES> and returns the result.
1330		1569
1331	=for gengetinfo end command_queue	1570	=for gengetinfo end command_queue
		1571
		1572	=back
		1573
		1574	=head3 MEMORY MAPPED BUFFERS
		1575
		1576	OpenCL allows you to map buffers and images to host memory (read: perl
		1577	scalars). This is done much like reading or copying a buffer, by enqueuing
		1578	a map or unmap operation on the command queue.
		1579
		1580	The map operations return an C<OpenCL::Mapped> object - see L<THE
		1581	OpenCL::Mapped CLASS> section for details on what to do with these
		1582	objects.
		1583
		1584	The object will be unmapped automatically when the mapped object is
		1585	destroyed (you can use a barrier to make sure the unmap has finished,
		1586	before using the buffer in a kernel), but you can also enqueue an unmap
		1587	operation manually.
		1588
		1589	=over 4
		1590
		1591	=item $mapped_buffer = $queue->map_buffer ($buf, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $offset=0, $size=undef, $wait_events...)
		1592
		1593	Maps the given buffer into host memory and returns an
		1594	C<OpenCL::MappedBuffer> object. If C<$size> is specified as undef, then
		1595	the map will extend to the end of the buffer.
		1596
		1597	map_flags: OpenCL::MAP_READ, OpenCL::MAP_WRITE, OpenCL::MAP_WRITE_INVALIDATE_REGION.
		1598
		1599	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapBuffer.html>
		1600
		1601	Example: map the buffer $buf fully and replace the first 4 bytes by "abcd", then unmap.
		1602
		1603	{
		1604	my $mapped = $queue->map_buffer ($buf, 1, OpenCL::MAP_WRITE);
		1605	substr $$mapped, 0, 4, "abcd";
		1606	} # asynchronously unmap because $mapped is destroyed
		1607
		1608	=item $mapped_image = $queue->map_image ($img, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $x=0, $y=0, $z=0, $width=undef, $height=undef, $depth=undef, $wait_events...)
		1609
		1610	Maps the given image area into host memory and return an
		1611	C<OpenCL::MappedImage> object.
		1612
		1613	If any of C<$width>, C<$height> and/or C<$depth> are C<undef> then they
		1614	will be replaced by the maximum possible value.
		1615
		1616	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapImage.html>
		1617
		1618	Example: map an image (with OpenCL::UNSIGNED_INT8 channel type) and set
		1619	the first channel of the leftmost column to 5, then explicitly unmap
		1620	it. You are not necessarily meant to do it this way, this example just
		1621	shows you the accessors to use :)
		1622
		1623	my $mapped = $queue->map_image ($image, 1, OpenCL::MAP_WRITE);
		1624
		1625	$mapped->set ($_ * $mapped->row_pitch, pack "C", 5)
		1626	for 0..$image->height;
		1627
		1628	$mapped->unmap;.
		1629	$mapped->wait; # only needed for out of order queues normally
		1630
		1631	=item $ev = $queue->unmap ($mapped, $wait_events...)
		1632
		1633	Unmaps the data from host memory. You must not call any methods that
		1634	modify the data, or modify the data scalar directly, after calling this
		1635	method.
		1636
		1637	The mapped event object will always be passed as part of the
		1638	$wait_events. The mapped event object will be replaced by the new event
		1639	object that this request creates.
1332		1640
1333	=back	1641	=back
1334		1642
1335	=head2 THE OpenCL::Memory CLASS	1643	=head2 THE OpenCL::Memory CLASS
1336		1644
…		…
1347		1655
1348	=for gengetinfo begin mem	1656	=for gengetinfo begin mem
1349		1657
1350	=item $mem_object_type = $mem->type	1658	=item $mem_object_type = $mem->type
1351		1659
1352	Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result.	1660	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_TYPE> and returns the result.
1353		1661
1354	=item $mem_flags = $mem->flags	1662	=item $mem_flags = $mem->flags
1355		1663
1356	Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result.	1664	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_FLAGS> and returns the result.
1357		1665
1358	=item $int = $mem->size	1666	=item $int = $mem->size
1359		1667
1360	Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result.	1668	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_SIZE> and returns the result.
1361		1669
1362	=item $ptr_value = $mem->host_ptr	1670	=item $ptr_value = $mem->host_ptr
1363		1671
1364	Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result.	1672	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_HOST_PTR> and returns the result.
1365		1673
1366	=item $uint = $mem->map_count	1674	=item $uint = $mem->map_count
1367		1675
1368	Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result.	1676	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_MAP_COUNT> and returns the result.
1369		1677
1370	=item $uint = $mem->reference_count	1678	=item $uint = $mem->reference_count
1371		1679
1372	Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result.	1680	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_REFERENCE_COUNT> and returns the result.
1373		1681
1374	=item $ctx = $mem->context	1682	=item $ctx = $mem->context
1375		1683
1376	Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result.	1684	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_CONTEXT> and returns the result.
1377		1685
1378	=item $mem = $mem->associated_memobject	1686	=item $mem = $mem->associated_memobject
1379		1687
1380	Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result.	1688	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_ASSOCIATED_MEMOBJECT> and returns the result.
1381		1689
1382	=item $int = $mem->offset	1690	=item $int = $mem->offset
1383		1691
1384	Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result.	1692	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_OFFSET> and returns the result.
1385		1693
1386	=for gengetinfo end mem	1694	=for gengetinfo end mem
1387		1695
1388	=item ($type, $name) = $mem->gl_object_info	1696	=item ($type, $name) = $mem->gl_object_info
1389		1697
…		…
1409	=over 4	1717	=over 4
1410		1718
1411	=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size)	1719	=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size)
1412		1720
1413	Creates an OpenCL::Buffer objects from this buffer and returns it. The	1721	Creates an OpenCL::Buffer objects from this buffer and returns it. The
1414	C<buffer_create_type> is assumed to be C<CL_BUFFER_CREATE_TYPE_REGION>.	1722	C<buffer_create_type> is assumed to be C<OpenCL::BUFFER_CREATE_TYPE_REGION>.
1415		1723
1416	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html>	1724	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html>
1417		1725
1418	=back	1726	=back
1419		1727
…		…
1435	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>	1743	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
1436		1744
1437	=item ($channel_order, $channel_data_type) = $image->format	1745	=item ($channel_order, $channel_data_type) = $image->format
1438		1746
1439	Returns the channel order and type used to create the image by calling	1747	Returns the channel order and type used to create the image by calling
1440	C<clGetImageInfo> with C<CL_IMAGE_FORMAT>.	1748	C<clGetImageInfo> with C<OpenCL::IMAGE_FORMAT>.
1441		1749
1442	=for gengetinfo begin image	1750	=for gengetinfo begin image
1443		1751
1444	=item $int = $image->element_size	1752	=item $int = $image->element_size
1445		1753
1446	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.	1754	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ELEMENT_SIZE> and returns the result.
1447		1755
1448	=item $int = $image->row_pitch	1756	=item $int = $image->row_pitch
1449		1757
1450	Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result.	1758	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ROW_PITCH> and returns the result.
1451		1759
1452	=item $int = $image->slice_pitch	1760	=item $int = $image->slice_pitch
1453		1761
1454	Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result.	1762	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_SLICE_PITCH> and returns the result.
1455		1763
1456	=item $int = $image->width	1764	=item $int = $image->width
1457		1765
1458	Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result.	1766	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_WIDTH> and returns the result.
1459		1767
1460	=item $int = $image->height	1768	=item $int = $image->height
1461		1769
1462	Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result.	1770	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_HEIGHT> and returns the result.
1463		1771
1464	=item $int = $image->depth	1772	=item $int = $image->depth
1465		1773
1466	Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result.	1774	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_DEPTH> and returns the result.
1467		1775
1468	=for gengetinfo end image	1776	=for gengetinfo end image
1469		1777
1470	=for gengetinfo begin gl_texture	1778	=for gengetinfo begin gl_texture
1471		1779
1472	=item $GLenum = $gl_texture->target	1780	=item $GLenum = $gl_texture->target
1473		1781
1474	Calls C<clGetGLTextureInfo> with C<CL_GL_TEXTURE_TARGET> and returns the result.	1782	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_TEXTURE_TARGET> and returns the result.
1475		1783
1476	=item $GLint = $gl_texture->gl_mipmap_level	1784	=item $GLint = $gl_texture->gl_mipmap_level
1477		1785
1478	Calls C<clGetGLTextureInfo> with C<CL_GL_MIPMAP_LEVEL> and returns the result.	1786	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_MIPMAP_LEVEL> and returns the result.
1479		1787
1480	=for gengetinfo end gl_texture	1788	=for gengetinfo end gl_texture
1481		1789
1482	=back	1790	=back
1483		1791
…		…
1493		1801
1494	=for gengetinfo begin sampler	1802	=for gengetinfo begin sampler
1495		1803
1496	=item $uint = $sampler->reference_count	1804	=item $uint = $sampler->reference_count
1497		1805
1498	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result.	1806	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_REFERENCE_COUNT> and returns the result.
1499		1807
1500	=item $ctx = $sampler->context	1808	=item $ctx = $sampler->context
1501		1809
1502	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result.	1810	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_CONTEXT> and returns the result.
1503		1811
1504	=item $addressing_mode = $sampler->normalized_coords	1812	=item $addressing_mode = $sampler->normalized_coords
1505		1813
1506	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result.	1814	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_NORMALIZED_COORDS> and returns the result.
1507		1815
1508	=item $filter_mode = $sampler->addressing_mode	1816	=item $filter_mode = $sampler->addressing_mode
1509		1817
1510	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result.	1818	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_ADDRESSING_MODE> and returns the result.
1511		1819
1512	=item $boolean = $sampler->filter_mode	1820	=item $boolean = $sampler->filter_mode
1513		1821
1514	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result.	1822	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_FILTER_MODE> and returns the result.
1515		1823
1516	=for gengetinfo end sampler	1824	=for gengetinfo end sampler
1517		1825
1518	=back	1826	=back
1519		1827
…		…
1529	If a callback is specified, then it will be called when compilation is	1837	If a callback is specified, then it will be called when compilation is
1530	finished. Note that many OpenCL implementations block your program while	1838	finished. Note that many OpenCL implementations block your program while
1531	compiling whether you use a callback or not. See C<build_async> if you	1839	compiling whether you use a callback or not. See C<build_async> if you
1532	want to make sure the build is done in the background.	1840	want to make sure the build is done in the background.
1533		1841
1534	Note that some OpenCL implementations atc up badly, and don't call the	1842	Note that some OpenCL implementations act up badly, and don't call the
1535	callback in some error cases (but call it in others). This implementation	1843	callback in some error cases (but call it in others). This implementation
1536	assumes the callback will always be called, and leaks memory if this is	1844	assumes the callback will always be called, and leaks memory if this is
1537	not so. So best make sure you don't pass in invalid values.	1845	not so. So best make sure you don't pass in invalid values.
1538		1846
		1847	Some implementations fail with C<OpenCL::INVALID_BINARY> when the
		1848	compilation state is successful but some later stage fails.
		1849
		1850	options: C<-D name>, C<-D name=definition>, C<-I dir>,
		1851	C<-cl-single-precision-constant>, C<-cl-denorms-are-zero>,
		1852	C<-cl-fp32-correctly-rounded-divide-sqrt>, C<-cl-opt-disable>,
		1853	C<-cl-mad-enable>, C<-cl-no-signed-zeros>, C<-cl-unsafe-math-optimizations>,
		1854	C<-cl-finite-math-only>, C<-cl-fast-relaxed-math>,
		1855	C<-w>, C<-Werror>, C<-cl-std=CL1.1/CL1.2>, C<-cl-kernel-arg-info>,
		1856	C<-create-library>, C<-enable-link-options>.
		1857
		1858	build_status: OpenCL::BUILD_SUCCESS, OpenCL::BUILD_NONE,
		1859	OpenCL::BUILD_ERROR, OpenCL::BUILD_IN_PROGRESS.
		1860
1539	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>	1861	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
1540		1862
1541	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)	1863	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
1542		1864
1543	Similar to C<< ->build >>, except it starts a thread, and never fails (you	1865	Similar to C<< ->build >>, except it starts a thread, and never fails (you
1544	need to check the compilation status form the callback, or by polling).	1866	need to check the compilation status form the callback, or by polling).
1545		1867
		1868	=item $program->compile (\@devices = undef, $options = "", \%headers = undef, $cb->($program) = undef)
		1869
		1870	Compiles the given program for the given devices (or all devices if
		1871	undef). If C<$headers> is given, it must be a hashref with include name =>
		1872	OpenCL::Program pairs.
		1873
		1874	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCompileProgram.html>
		1875
1546	=item $packed_value = $program->build_info ($device, $name)	1876	=item $packed_value = $program->build_info ($device, $name)
1547		1877
1548	Similar to C<< $platform->info >>, but returns build info for a previous	1878	Similar to C<< $platform->info >>, but returns build info for a previous
1549	build attempt for the given device.	1879	build attempt for the given device.
1550		1880
		1881	binary_type: OpenCL::PROGRAM_BINARY_TYPE_NONE,
		1882	OpenCL::PROGRAM_BINARY_TYPE_COMPILED_OBJECT,
		1883	OpenCL::PROGRAM_BINARY_TYPE_LIBRARY,
		1884	OpenCL::PROGRAM_BINARY_TYPE_EXECUTABLE.
		1885
1551	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>	1886	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>
1552		1887
1553	=item $kernel = $program->kernel ($function_name)	1888	=item $kernel = $program->kernel ($function_name)
1554		1889
1555	Creates an OpenCL::Kernel object out of the named C<__kernel> function in	1890	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
…		…
1565		1900
1566	=for gengetinfo begin program_build	1901	=for gengetinfo begin program_build
1567		1902
1568	=item $build_status = $program->build_status ($device)	1903	=item $build_status = $program->build_status ($device)
1569		1904
1570	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result.	1905	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_STATUS> and returns the result.
1571		1906
1572	=item $string = $program->build_options ($device)	1907	=item $string = $program->build_options ($device)
1573		1908
1574	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result.	1909	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_OPTIONS> and returns the result.
1575		1910
1576	=item $string = $program->build_log ($device)	1911	=item $string = $program->build_log ($device)
1577		1912
1578	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result.	1913	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_LOG> and returns the result.
		1914
		1915	=item $binary_type = $program->binary_type ($device)
		1916
		1917	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BINARY_TYPE> and returns the result.
1579		1918
1580	=for gengetinfo end program_build	1919	=for gengetinfo end program_build
1581		1920
1582	=item $packed_value = $program->info ($name)	1921	=item $packed_value = $program->info ($name)
1583		1922
…		…
1587		1926
1588	=for gengetinfo begin program	1927	=for gengetinfo begin program
1589		1928
1590	=item $uint = $program->reference_count	1929	=item $uint = $program->reference_count
1591		1930
1592	Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result.	1931	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_REFERENCE_COUNT> and returns the result.
1593		1932
1594	=item $ctx = $program->context	1933	=item $ctx = $program->context
1595		1934
1596	Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result.	1935	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_CONTEXT> and returns the result.
1597		1936
1598	=item $uint = $program->num_devices	1937	=item $uint = $program->num_devices
1599		1938
1600	Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result.	1939	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_NUM_DEVICES> and returns the result.
1601		1940
1602	=item @devices = $program->devices	1941	=item @devices = $program->devices
1603		1942
1604	Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result.	1943	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_DEVICES> and returns the result.
1605		1944
1606	=item $string = $program->source	1945	=item $string = $program->source
1607		1946
1608	Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result.	1947	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_SOURCE> and returns the result.
1609		1948
1610	=item @ints = $program->binary_sizes	1949	=item @ints = $program->binary_sizes
1611		1950
1612	Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result.	1951	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_BINARY_SIZES> and returns the result.
1613		1952
1614	=for gengetinfo end program	1953	=for gengetinfo end program
1615		1954
1616	=item @blobs = $program->binaries	1955	=item @blobs = $program->binaries
1617		1956
…		…
1638		1977
1639	=for gengetinfo begin kernel	1978	=for gengetinfo begin kernel
1640		1979
1641	=item $string = $kernel->function_name	1980	=item $string = $kernel->function_name
1642		1981
1643	Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result.	1982	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_FUNCTION_NAME> and returns the result.
1644		1983
1645	=item $uint = $kernel->num_args	1984	=item $uint = $kernel->num_args
1646		1985
1647	Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result.	1986	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_NUM_ARGS> and returns the result.
1648		1987
1649	=item $uint = $kernel->reference_count	1988	=item $uint = $kernel->reference_count
1650		1989
1651	Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result.	1990	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_REFERENCE_COUNT> and returns the result.
1652		1991
1653	=item $ctx = $kernel->context	1992	=item $ctx = $kernel->context
1654		1993
1655	Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result.	1994	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_CONTEXT> and returns the result.
1656		1995
1657	=item $program = $kernel->program	1996	=item $program = $kernel->program
1658		1997
1659	Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result.	1998	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_PROGRAM> and returns the result.
1660		1999
1661	=for gengetinfo end kernel	2000	=for gengetinfo end kernel
1662		2001
1663	=item $packed_value = $kernel->work_group_info ($device, $name)	2002	=item $packed_value = $kernel->work_group_info ($device, $name)
1664		2003
1665	See C<< $platform->info >> for details.	2004	See C<< $platform->info >> for details.
1666		2005
1667	The reason this method is not called C<info> is that there already is an
1668	C<< ->info >> method.
1669
1670	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>	2006	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
1671		2007
1672	=for gengetinfo begin kernel_work_group	2008	=for gengetinfo begin kernel_work_group
1673		2009
1674	=item $int = $kernel->work_group_size ($device)	2010	=item $int = $kernel->work_group_size ($device)
1675		2011
1676	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result.	2012	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_WORK_GROUP_SIZE> and returns the result.
1677		2013
1678	=item @ints = $kernel->compile_work_group_size ($device)	2014	=item @ints = $kernel->compile_work_group_size ($device)
1679		2015
1680	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.	2016	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.
1681		2017
1682	=item $ulong = $kernel->local_mem_size ($device)	2018	=item $ulong = $kernel->local_mem_size ($device)
1683		2019
1684	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result.	2020	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_LOCAL_MEM_SIZE> and returns the result.
1685		2021
1686	=item $int = $kernel->preferred_work_group_size_multiple ($device)	2022	=item $int = $kernel->preferred_work_group_size_multiple ($device)
1687		2023
1688	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.	2024	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.
1689		2025
1690	=item $ulong = $kernel->private_mem_size ($device)	2026	=item $ulong = $kernel->private_mem_size ($device)
1691		2027
1692	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.	2028	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PRIVATE_MEM_SIZE> and returns the result.
1693		2029
1694	=for gengetinfo end kernel_work_group	2030	=for gengetinfo end kernel_work_group
		2031
		2032	=item $packed_value = $kernel->arg_info ($idx, $name)
		2033
		2034	See C<< $platform->info >> for details.
		2035
		2036	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clGetKernelArgInfo.html>
		2037
		2038	=for gengetinfo begin kernel_arg
		2039
		2040	=item $kernel_arg_address_qualifier = $kernel->arg_address_qualifier ($idx)
		2041
		2042	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ADDRESS_QUALIFIER> and returns the result.
		2043
		2044	=item $kernel_arg_access_qualifier = $kernel->arg_access_qualifier ($idx)
		2045
		2046	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ACCESS_QUALIFIER> and returns the result.
		2047
		2048	=item $string = $kernel->arg_type_name ($idx)
		2049
		2050	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_NAME> and returns the result.
		2051
		2052	=item $kernel_arg_type_qualifier = $kernel->arg_type_qualifier ($idx)
		2053
		2054	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_QUALIFIER> and returns the result.
		2055
		2056	=item $string = $kernel->arg_name ($idx)
		2057
		2058	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_NAME> and returns the result.
		2059
		2060	=for gengetinfo end kernel_arg
1695		2061
1696	=item $kernel->setf ($format, ...)	2062	=item $kernel->setf ($format, ...)
1697		2063
1698	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic	2064	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
1699	way to set arguments (and with OpenCL 1.2 it might be rather slow), you	2065	way to set arguments (and with OpenCL 1.2 it might be rather slow), you
…		…
1811		2177
1812	=for gengetinfo begin event	2178	=for gengetinfo begin event
1813		2179
1814	=item $queue = $event->command_queue	2180	=item $queue = $event->command_queue
1815		2181
1816	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result.	2182	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_QUEUE> and returns the result.
1817		2183
1818	=item $command_type = $event->command_type	2184	=item $command_type = $event->command_type
1819		2185
1820	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result.	2186	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_TYPE> and returns the result.
1821		2187
1822	=item $uint = $event->reference_count	2188	=item $uint = $event->reference_count
1823		2189
1824	Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result.	2190	Calls C<clGetEventInfo> with C<OpenCL::EVENT_REFERENCE_COUNT> and returns the result.
1825		2191
1826	=item $uint = $event->command_execution_status	2192	=item $uint = $event->command_execution_status
1827		2193
1828	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result.	2194	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_EXECUTION_STATUS> and returns the result.
1829		2195
1830	=item $ctx = $event->context	2196	=item $ctx = $event->context
1831		2197
1832	Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result.	2198	Calls C<clGetEventInfo> with C<OpenCL::EVENT_CONTEXT> and returns the result.
1833		2199
1834	=for gengetinfo end event	2200	=for gengetinfo end event
1835		2201
1836	=item $packed_value = $ev->profiling_info ($name)	2202	=item $packed_value = $ev->profiling_info ($name)
1837		2203
…		…
1844		2210
1845	=for gengetinfo begin profiling	2211	=for gengetinfo begin profiling
1846		2212
1847	=item $ulong = $event->profiling_command_queued	2213	=item $ulong = $event->profiling_command_queued
1848		2214
1849	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result.	2215	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_QUEUED> and returns the result.
1850		2216
1851	=item $ulong = $event->profiling_command_submit	2217	=item $ulong = $event->profiling_command_submit
1852		2218
1853	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result.	2219	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_SUBMIT> and returns the result.
1854		2220
1855	=item $ulong = $event->profiling_command_start	2221	=item $ulong = $event->profiling_command_start
1856		2222
1857	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result.	2223	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_START> and returns the result.
1858		2224
1859	=item $ulong = $event->profiling_command_end	2225	=item $ulong = $event->profiling_command_end
1860		2226
1861	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result.	2227	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_END> and returns the result.
1862		2228
1863	=for gengetinfo end profiling	2229	=for gengetinfo end profiling
1864		2230
1865	=back	2231	=back
1866		2232
…		…
1873	=item $ev->set_status ($execution_status)	2239	=item $ev->set_status ($execution_status)
1874		2240
1875	Sets the execution status of the user event. Can only be called once,	2241	Sets the execution status of the user event. Can only be called once,
1876	either with OpenCL::COMPLETE or a negative number as status.	2242	either with OpenCL::COMPLETE or a negative number as status.
1877		2243
		2244	execution_status: OpenCL::COMPLETE or a negative integer.
		2245
1878	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>	2246	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1879		2247
1880	=back	2248	=back
		2249
		2250	=head2 THE OpenCL::Mapped CLASS
		2251
		2252	This class represents objects mapped into host memory. They are
		2253	represented by a blessed string scalar. The string data is the mapped
		2254	memory area, that is, if you read or write it, then the mapped object is
		2255	accessed directly.
		2256
		2257	You must only ever use operations that modify the string in-place - for
		2258	example, a C<substr> that doesn't change the length, or maybe a regex that
		2259	doesn't change the length. Any other operation might cause the data to be
		2260	copied.
		2261
		2262	When the object is destroyed it will enqueue an implicit unmap operation
		2263	on the queue that was used to create it.
		2264
		2265	Keep in mind that you I<need> to unmap (or destroy) mapped objects before
		2266	OpenCL sees the changes, even if some implementations don't need this
		2267	sometimes.
		2268
		2269	Example, replace the first two floats in the mapped buffer by 1 and 2.
		2270
		2271	my $mapped = $queue->map_buffer ($buf, ...
		2272	$mapped->event->wait; # make sure it's there
		2273
		2274	# now replace first 8 bytes by new data, which is exactly 8 bytes long
		2275	# we blindly assume device endianness to equal host endianness
		2276	# (and of course, we assume iee 754 single precision floats :)
		2277	substr $$mapped, 0, 8, pack "f*", 1, 2;
		2278
		2279	=over 4
		2280
		2281	=item $ev = $mapped->unmap ($wait_events...)
		2282
		2283	Unmaps the mapped memory object, using the queue originally used to create
		2284	it, quite similarly to C<< $queue->unmap ($mapped, ...) >>.
		2285
		2286	=item $bool = $mapped->mapped
		2287
		2288	Returns whether the object is still mapped - true before an C<unmap> is
		2289	enqueued, false afterwards.
		2290
		2291	=item $ev = $mapped->event
		2292
		2293	Return the event object associated with the mapped object. Initially, this
		2294	will be the event object created when mapping the object, and after an
		2295	unmap, this will be the event object that the unmap operation created.
		2296
		2297	=item $mapped->wait
		2298
		2299	Same as C<< $mapped->event->wait >> - makes sure no operations on this
		2300	mapped object are outstanding.
		2301
		2302	=item $bytes = $mapped->size
		2303
		2304	Returns the size of the mapped area, in bytes. Same as C<length $$mapped>.
		2305
		2306	=item $ptr = $mapped->ptr
		2307
		2308	Returns the raw memory address of the mapped area.
		2309
		2310	=item $mapped->set ($offset, $data)
		2311
		2312	Replaces the data at the given C<$offset> in the memory area by the new
		2313	C<$data>. This method is safer than direct manipulation of C<$mapped>
		2314	because it does bounds-checking, but also slower.
		2315
		2316	=item $data = $mapped->get ($offset, $length)
		2317
		2318	Returns (without copying) a scalar representing the data at the given
		2319	C<$offset> and C<$length> in the mapped memory area. This is the same as
		2320	the following substr, except much slower;
		2321
		2322	$data = substr $$mapped, $offset, $length
		2323
		2324	=cut
		2325
		2326	sub OpenCL::Mapped::get {
		2327	substr ${$_[0]}, $_[1], $_[2]
		2328	}
		2329
		2330	=back
		2331
		2332	=head2 THE OpenCL::MappedBuffer CLASS
		2333
		2334	This is a subclass of OpenCL::Mapped, representing mapped buffers.
		2335
		2336	=head2 THE OpenCL::MappedImage CLASS
		2337
		2338	This is a subclass of OpenCL::Mapped, representing mapped images.
		2339
		2340	=over 4
		2341
		2342	=item $bytes = $mapped->row_pitch
		2343
		2344	=item $bytes = $mapped->slice_pitch
		2345
		2346	Return the row or slice pitch of the image that has been mapped.
		2347
		2348	=back
		2349
1881		2350
1882	=cut	2351	=cut
1883		2352
1884	1;	2353	1;
1885		2354

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