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Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.63 by root, Sun Apr 29 18:24:35 2012 UTC vs.
Revision 1.83 by root, Sat May 5 15:11:19 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
…		…
499	use Async::Interrupt ();	595	use Async::Interrupt ();
500		596
501	our $POLL_FUNC; # set by XS	597	our $POLL_FUNC; # set by XS
502		598
503	BEGIN {	599	BEGIN {
504	our $VERSION = '0.98';	600	our $VERSION = '0.99';
505		601
506	require XSLoader;	602	require XSLoader;
507	XSLoader::load (__PACKAGE__, $VERSION);	603	XSLoader::load (__PACKAGE__, $VERSION);
508		604
509	@OpenCL::Platform::ISA =	605	@OpenCL::Platform::ISA =
…		…
514	@OpenCL::Sampler::ISA =	610	@OpenCL::Sampler::ISA =
515	@OpenCL::Program::ISA =	611	@OpenCL::Program::ISA =
516	@OpenCL::Kernel::ISA =	612	@OpenCL::Kernel::ISA =
517	@OpenCL::Event::ISA = OpenCL::Object::;	613	@OpenCL::Event::ISA = OpenCL::Object::;
518		614
		615	@OpenCL::SubDevice::ISA = OpenCL::Device::;
		616
519	@OpenCL::Buffer::ISA =	617	@OpenCL::Buffer::ISA =
520	@OpenCL::Image::ISA = OpenCL::Memory::;	618	@OpenCL::Image::ISA = OpenCL::Memory::;
521		619
522	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;	620	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
523		621
…		…
527	@OpenCL::Image1D::ISA =	625	@OpenCL::Image1D::ISA =
528	@OpenCL::Image1DArray::ISA =	626	@OpenCL::Image1DArray::ISA =
529	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;	627	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
530		628
531	@OpenCL::UserEvent::ISA = OpenCL::Event::;	629	@OpenCL::UserEvent::ISA = OpenCL::Event::;
		630
		631	@OpenCL::MappedBuffer::ISA =
		632	@OpenCL::MappedImage::ISA = OpenCL::Mapped::;
532	}	633	}
533		634
534	=head2 THE OpenCL PACKAGE	635	=head2 THE OpenCL PACKAGE
535		636
536	=over 4	637	=over 4
…		…
540	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
541	and before calling another OpenCL function.	642	and before calling another OpenCL function.
542		643
543	=item $str = OpenCL::err2str [$errval]	644	=item $str = OpenCL::err2str [$errval]
544		645
545	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
546	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>.
547		651
548	=item $str = OpenCL::enum2str $enum	652	=item $str = OpenCL::enum2str $enum
549		653
550	Converts most enum values (of parameter names, image format constants,	654	Converts most enum values (of parameter names, image format constants,
551	object types, addressing and filter modes, command types etc.) into a	655	object types, addressing and filter modes, command types etc.) into a
552	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
553	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
554	string out of it.	658	string out of it.
555		659
		660	The latest version of this module knows the enumaration constants
		661	listed in L<http://cvs.schmorp.de/OpenCL/enumstr.h>.
		662
556	=item @platforms = OpenCL::platforms	663	=item @platforms = OpenCL::platforms
557		664
558	Returns all available OpenCL::Platform objects.	665	Returns all available OpenCL::Platform objects.
559		666
560	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>
561		668
562	=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
563		670
564	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.
565		676
566	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>
567		678
568	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)	679	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
569		680
570	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).
571	function isn't implemented yet, use C<< $platform->context >> instead.	682	Consider using C<< $platform->context >> instead.
572		683
573	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>
574		685
575	=item OpenCL::wait_for_events $wait_events...	686	=item OpenCL::wait_for_events $wait_events...
576		687
…		…
657	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>
658		769
659	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)	770	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
660		771
661	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
662	CL_CONTEXT_PLATFORM property is supplied automatically.	773	OpenCL::CONTEXT_PLATFORM property is supplied automatically.
663		774
664	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>
665		776
666	=item $packed_value = $platform->info ($name)	777	=item $packed_value = $platform->info ($name)
667		778
…		…
683		794
684	=for gengetinfo begin platform	795	=for gengetinfo begin platform
685		796
686	=item $string = $platform->profile	797	=item $string = $platform->profile
687		798
688	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.
689		800
690	=item $string = $platform->version	801	=item $string = $platform->version
691		802
692	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.
693		804
694	=item $string = $platform->name	805	=item $string = $platform->name
695		806
696	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.
697		808
698	=item $string = $platform->vendor	809	=item $string = $platform->vendor
699		810
700	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.
701		812
702	=item $string = $platform->extensions	813	=item $string = $platform->extensions
703		814
704	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.
705		816
706	=for gengetinfo end platform	817	=for gengetinfo end platform
707		818
708	=back	819	=back
709		820
…		…
713		824
714	=item $packed_value = $device->info ($name)	825	=item $packed_value = $device->info ($name)
715		826
716	See C<< $platform->info >> for details.	827	See C<< $platform->info >> for details.
717		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
718	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>
719		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
720	=for gengetinfo begin device	863	=for gengetinfo begin device
721		864
722	=item $device_type = $device->type	865	=item $device_type = $device->type
723		866
724	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.
725		868
726	=item $uint = $device->vendor_id	869	=item $uint = $device->vendor_id
727		870
728	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.
729		872
730	=item $uint = $device->max_compute_units	873	=item $uint = $device->max_compute_units
731		874
732	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.
733		876
734	=item $uint = $device->max_work_item_dimensions	877	=item $uint = $device->max_work_item_dimensions
735		878
736	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.
737		880
738	=item $int = $device->max_work_group_size	881	=item $int = $device->max_work_group_size
739		882
740	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.
741		884
742	=item @ints = $device->max_work_item_sizes	885	=item @ints = $device->max_work_item_sizes
743		886
744	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.
745		888
746	=item $uint = $device->preferred_vector_width_char	889	=item $uint = $device->preferred_vector_width_char
747		890
748	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.
749		892
750	=item $uint = $device->preferred_vector_width_short	893	=item $uint = $device->preferred_vector_width_short
751		894
752	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.
753		896
754	=item $uint = $device->preferred_vector_width_int	897	=item $uint = $device->preferred_vector_width_int
755		898
756	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.
757		900
758	=item $uint = $device->preferred_vector_width_long	901	=item $uint = $device->preferred_vector_width_long
759		902
760	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.
761		904
762	=item $uint = $device->preferred_vector_width_float	905	=item $uint = $device->preferred_vector_width_float
763		906
764	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.
765		908
766	=item $uint = $device->preferred_vector_width_double	909	=item $uint = $device->preferred_vector_width_double
767		910
768	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.
769		912
770	=item $uint = $device->max_clock_frequency	913	=item $uint = $device->max_clock_frequency
771		914
772	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.
773		916
774	=item $bitfield = $device->address_bits	917	=item $bitfield = $device->address_bits
775		918
776	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.
777		920
778	=item $uint = $device->max_read_image_args	921	=item $uint = $device->max_read_image_args
779		922
780	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.
781		924
782	=item $uint = $device->max_write_image_args	925	=item $uint = $device->max_write_image_args
783		926
784	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.
785		928
786	=item $ulong = $device->max_mem_alloc_size	929	=item $ulong = $device->max_mem_alloc_size
787		930
788	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.
789		932
790	=item $int = $device->image2d_max_width	933	=item $int = $device->image2d_max_width
791		934
792	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.
793		936
794	=item $int = $device->image2d_max_height	937	=item $int = $device->image2d_max_height
795		938
796	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.
797		940
798	=item $int = $device->image3d_max_width	941	=item $int = $device->image3d_max_width
799		942
800	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.
801		944
802	=item $int = $device->image3d_max_height	945	=item $int = $device->image3d_max_height
803		946
804	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.
805		948
806	=item $int = $device->image3d_max_depth	949	=item $int = $device->image3d_max_depth
807		950
808	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.
809		952
810	=item $uint = $device->image_support	953	=item $uint = $device->image_support
811		954
812	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.
813		956
814	=item $int = $device->max_parameter_size	957	=item $int = $device->max_parameter_size
815		958
816	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.
817		960
818	=item $uint = $device->max_samplers	961	=item $uint = $device->max_samplers
819		962
820	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.
821		964
822	=item $uint = $device->mem_base_addr_align	965	=item $uint = $device->mem_base_addr_align
823		966
824	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.
825		968
826	=item $uint = $device->min_data_type_align_size	969	=item $uint = $device->min_data_type_align_size
827		970
828	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.
829		972
830	=item $device_fp_config = $device->single_fp_config	973	=item $device_fp_config = $device->single_fp_config
831		974
832	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.
833		976
834	=item $device_mem_cache_type = $device->global_mem_cache_type	977	=item $device_mem_cache_type = $device->global_mem_cache_type
835		978
836	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.
837		980
838	=item $uint = $device->global_mem_cacheline_size	981	=item $uint = $device->global_mem_cacheline_size
839		982
840	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.
841		984
842	=item $ulong = $device->global_mem_cache_size	985	=item $ulong = $device->global_mem_cache_size
843		986
844	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.
845		988
846	=item $ulong = $device->global_mem_size	989	=item $ulong = $device->global_mem_size
847		990
848	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.
849		992
850	=item $ulong = $device->max_constant_buffer_size	993	=item $ulong = $device->max_constant_buffer_size
851		994
852	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.
853		996
854	=item $uint = $device->max_constant_args	997	=item $uint = $device->max_constant_args
855		998
856	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.
857		1000
858	=item $device_local_mem_type = $device->local_mem_type	1001	=item $device_local_mem_type = $device->local_mem_type
859		1002
860	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.
861		1004
862	=item $ulong = $device->local_mem_size	1005	=item $ulong = $device->local_mem_size
863		1006
864	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.
865		1008
866	=item $boolean = $device->error_correction_support	1009	=item $boolean = $device->error_correction_support
867		1010
868	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.
869		1012
870	=item $int = $device->profiling_timer_resolution	1013	=item $int = $device->profiling_timer_resolution
871		1014
872	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.
873		1016
874	=item $boolean = $device->endian_little	1017	=item $boolean = $device->endian_little
875		1018
876	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.
877		1020
878	=item $boolean = $device->available	1021	=item $boolean = $device->available
879		1022
880	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.
881		1024
882	=item $boolean = $device->compiler_available	1025	=item $boolean = $device->compiler_available
883		1026
884	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.
885		1028
886	=item $device_exec_capabilities = $device->execution_capabilities	1029	=item $device_exec_capabilities = $device->execution_capabilities
887		1030
888	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.
889		1032
890	=item $command_queue_properties = $device->properties	1033	=item $command_queue_properties = $device->properties
891		1034
892	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.
893		1036
894	=item $ = $device->platform	1037	=item $ = $device->platform
895		1038
896	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.
897		1040
898	=item $string = $device->name	1041	=item $string = $device->name
899		1042
900	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.
901		1044
902	=item $string = $device->vendor	1045	=item $string = $device->vendor
903		1046
904	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.
905		1048
906	=item $string = $device->driver_version	1049	=item $string = $device->driver_version
907		1050
908	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.
909		1052
910	=item $string = $device->profile	1053	=item $string = $device->profile
911		1054
912	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.
913		1056
914	=item $string = $device->version	1057	=item $string = $device->version
915		1058
916	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.
917		1060
918	=item $string = $device->extensions	1061	=item $string = $device->extensions
919		1062
920	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.
921		1064
922	=item $uint = $device->preferred_vector_width_half	1065	=item $uint = $device->preferred_vector_width_half
923		1066
924	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.
925		1068
926	=item $uint = $device->native_vector_width_char	1069	=item $uint = $device->native_vector_width_char
927		1070
928	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.
929		1072
930	=item $uint = $device->native_vector_width_short	1073	=item $uint = $device->native_vector_width_short
931		1074
932	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.
933		1076
934	=item $uint = $device->native_vector_width_int	1077	=item $uint = $device->native_vector_width_int
935		1078
936	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.
937		1080
938	=item $uint = $device->native_vector_width_long	1081	=item $uint = $device->native_vector_width_long
939		1082
940	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.
941		1084
942	=item $uint = $device->native_vector_width_float	1085	=item $uint = $device->native_vector_width_float
943		1086
944	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.
945		1088
946	=item $uint = $device->native_vector_width_double	1089	=item $uint = $device->native_vector_width_double
947		1090
948	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.
949		1092
950	=item $uint = $device->native_vector_width_half	1093	=item $uint = $device->native_vector_width_half
951		1094
952	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.
953		1096
954	=item $device_fp_config = $device->double_fp_config	1097	=item $device_fp_config = $device->double_fp_config
955		1098
956	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.
957		1100
958	=item $device_fp_config = $device->half_fp_config	1101	=item $device_fp_config = $device->half_fp_config
959		1102
960	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.
961		1104
962	=item $boolean = $device->host_unified_memory	1105	=item $boolean = $device->host_unified_memory
963		1106
964	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.
965		1108
966	=item $device = $device->parent_device_ext	1109	=item $device = $device->parent_device_ext
967		1110
968	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.
969		1112
970	=item @device_partition_property_exts = $device->partition_types_ext	1113	=item @device_partition_property_exts = $device->partition_types_ext
971		1114
972	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.
973		1116
974	=item @device_partition_property_exts = $device->affinity_domains_ext	1117	=item @device_partition_property_exts = $device->affinity_domains_ext
975		1118
976	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.
977		1120
978	=item $uint = $device->reference_count_ext	1121	=item $uint = $device->reference_count_ext
979		1122
980	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.
981		1124
982	=item @device_partition_property_exts = $device->partition_style_ext	1125	=item @device_partition_property_exts = $device->partition_style_ext
983		1126
984	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.
985		1128
986	=for gengetinfo end device	1129	=for gengetinfo end device
987		1130
988	=back	1131	=back
989		1132
990	=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
991		1160
992	=over 4	1161	=over 4
993		1162
994	=item $prog = $ctx->build_program ($program, $options = "")	1163	=item $prog = $ctx->build_program ($program, $options = "")
995		1164
…		…
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
…		…
1196		1422
1197	=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)	1423	=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)
1198		1424
1199	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>	1425	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>
1200		1426
1201	=item $ev = $queue->read_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...)	1427	$eue->read_buffer_rect ($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...)
1202		1428
1203	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html	1429	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html
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 = $queue->write_buffer_rect ($buf, $blocking, $buf_y, $host_x, $host_z, $height, $buf_row_pitch, $host_row_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
…		…
1343		1651
1344	See C<< $platform->info >> for details.	1652	See C<< $platform->info >> for details.
1345		1653
1346	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html>	1654	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html>
1347		1655
		1656	=item $memory->destructor_callback ($cb->())
		1657
		1658	Sets a callback that will be invoked after the memory object is destructed.
		1659
		1660	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetMemObjectDestructorCallback.html>
		1661
1348	=for gengetinfo begin mem	1662	=for gengetinfo begin mem
1349		1663
1350	=item $mem_object_type = $mem->type	1664	=item $mem_object_type = $mem->type
1351		1665
1352	Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result.	1666	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_TYPE> and returns the result.
1353		1667
1354	=item $mem_flags = $mem->flags	1668	=item $mem_flags = $mem->flags
1355		1669
1356	Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result.	1670	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_FLAGS> and returns the result.
1357		1671
1358	=item $int = $mem->size	1672	=item $int = $mem->size
1359		1673
1360	Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result.	1674	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_SIZE> and returns the result.
1361		1675
1362	=item $ptr_value = $mem->host_ptr	1676	=item $ptr_value = $mem->host_ptr
1363		1677
1364	Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result.	1678	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_HOST_PTR> and returns the result.
1365		1679
1366	=item $uint = $mem->map_count	1680	=item $uint = $mem->map_count
1367		1681
1368	Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result.	1682	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_MAP_COUNT> and returns the result.
1369		1683
1370	=item $uint = $mem->reference_count	1684	=item $uint = $mem->reference_count
1371		1685
1372	Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result.	1686	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_REFERENCE_COUNT> and returns the result.
1373		1687
1374	=item $ctx = $mem->context	1688	=item $ctx = $mem->context
1375		1689
1376	Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result.	1690	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_CONTEXT> and returns the result.
1377		1691
1378	=item $mem = $mem->associated_memobject	1692	=item $mem = $mem->associated_memobject
1379		1693
1380	Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result.	1694	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_ASSOCIATED_MEMOBJECT> and returns the result.
1381		1695
1382	=item $int = $mem->offset	1696	=item $int = $mem->offset
1383		1697
1384	Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result.	1698	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_OFFSET> and returns the result.
1385		1699
1386	=for gengetinfo end mem	1700	=for gengetinfo end mem
1387		1701
1388	=item ($type, $name) = $mem->gl_object_info	1702	=item ($type, $name) = $mem->gl_object_info
1389		1703
…		…
1409	=over 4	1723	=over 4
1410		1724
1411	=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size)	1725	=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size)
1412		1726
1413	Creates an OpenCL::Buffer objects from this buffer and returns it. The	1727	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>.	1728	C<buffer_create_type> is assumed to be C<OpenCL::BUFFER_CREATE_TYPE_REGION>.
1415		1729
1416	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html>	1730	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html>
1417		1731
1418	=back	1732	=back
1419		1733
…		…
1435	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>	1749	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
1436		1750
1437	=item ($channel_order, $channel_data_type) = $image->format	1751	=item ($channel_order, $channel_data_type) = $image->format
1438		1752
1439	Returns the channel order and type used to create the image by calling	1753	Returns the channel order and type used to create the image by calling
1440	C<clGetImageInfo> with C<CL_IMAGE_FORMAT>.	1754	C<clGetImageInfo> with C<OpenCL::IMAGE_FORMAT>.
1441		1755
1442	=for gengetinfo begin image	1756	=for gengetinfo begin image
1443		1757
1444	=item $int = $image->element_size	1758	=item $int = $image->element_size
1445		1759
1446	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.	1760	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ELEMENT_SIZE> and returns the result.
1447		1761
1448	=item $int = $image->row_pitch	1762	=item $int = $image->row_pitch
1449		1763
1450	Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result.	1764	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ROW_PITCH> and returns the result.
1451		1765
1452	=item $int = $image->slice_pitch	1766	=item $int = $image->slice_pitch
1453		1767
1454	Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result.	1768	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_SLICE_PITCH> and returns the result.
1455		1769
1456	=item $int = $image->width	1770	=item $int = $image->width
1457		1771
1458	Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result.	1772	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_WIDTH> and returns the result.
1459		1773
1460	=item $int = $image->height	1774	=item $int = $image->height
1461		1775
1462	Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result.	1776	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_HEIGHT> and returns the result.
1463		1777
1464	=item $int = $image->depth	1778	=item $int = $image->depth
1465		1779
1466	Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result.	1780	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_DEPTH> and returns the result.
1467		1781
1468	=for gengetinfo end image	1782	=for gengetinfo end image
1469		1783
1470	=for gengetinfo begin gl_texture	1784	=for gengetinfo begin gl_texture
1471		1785
1472	=item $GLenum = $gl_texture->target	1786	=item $GLenum = $gl_texture->target
1473		1787
1474	Calls C<clGetGLTextureInfo> with C<CL_GL_TEXTURE_TARGET> and returns the result.	1788	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_TEXTURE_TARGET> and returns the result.
1475		1789
1476	=item $GLint = $gl_texture->gl_mipmap_level	1790	=item $GLint = $gl_texture->gl_mipmap_level
1477		1791
1478	Calls C<clGetGLTextureInfo> with C<CL_GL_MIPMAP_LEVEL> and returns the result.	1792	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_MIPMAP_LEVEL> and returns the result.
1479		1793
1480	=for gengetinfo end gl_texture	1794	=for gengetinfo end gl_texture
1481		1795
1482	=back	1796	=back
1483		1797
…		…
1493		1807
1494	=for gengetinfo begin sampler	1808	=for gengetinfo begin sampler
1495		1809
1496	=item $uint = $sampler->reference_count	1810	=item $uint = $sampler->reference_count
1497		1811
1498	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result.	1812	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_REFERENCE_COUNT> and returns the result.
1499		1813
1500	=item $ctx = $sampler->context	1814	=item $ctx = $sampler->context
1501		1815
1502	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result.	1816	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_CONTEXT> and returns the result.
1503		1817
1504	=item $addressing_mode = $sampler->normalized_coords	1818	=item $addressing_mode = $sampler->normalized_coords
1505		1819
1506	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result.	1820	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_NORMALIZED_COORDS> and returns the result.
1507		1821
1508	=item $filter_mode = $sampler->addressing_mode	1822	=item $filter_mode = $sampler->addressing_mode
1509		1823
1510	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result.	1824	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_ADDRESSING_MODE> and returns the result.
1511		1825
1512	=item $boolean = $sampler->filter_mode	1826	=item $boolean = $sampler->filter_mode
1513		1827
1514	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result.	1828	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_FILTER_MODE> and returns the result.
1515		1829
1516	=for gengetinfo end sampler	1830	=for gengetinfo end sampler
1517		1831
1518	=back	1832	=back
1519		1833
…		…
1537	not so. So best make sure you don't pass in invalid values.	1851	not so. So best make sure you don't pass in invalid values.
1538		1852
1539	Some implementations fail with C<OpenCL::INVALID_BINARY> when the	1853	Some implementations fail with C<OpenCL::INVALID_BINARY> when the
1540	compilation state is successful but some later stage fails.	1854	compilation state is successful but some later stage fails.
1541		1855
		1856	options: C<-D name>, C<-D name=definition>, C<-I dir>,
		1857	C<-cl-single-precision-constant>, C<-cl-denorms-are-zero>,
		1858	C<-cl-fp32-correctly-rounded-divide-sqrt>, C<-cl-opt-disable>,
		1859	C<-cl-mad-enable>, C<-cl-no-signed-zeros>, C<-cl-unsafe-math-optimizations>,
		1860	C<-cl-finite-math-only>, C<-cl-fast-relaxed-math>,
		1861	C<-w>, C<-Werror>, C<-cl-std=CL1.1/CL1.2>, C<-cl-kernel-arg-info>,
		1862	C<-create-library>, C<-enable-link-options>.
		1863
		1864	build_status: OpenCL::BUILD_SUCCESS, OpenCL::BUILD_NONE,
		1865	OpenCL::BUILD_ERROR, OpenCL::BUILD_IN_PROGRESS.
		1866
1542	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>	1867	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
1543		1868
1544	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)	1869	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
1545		1870
1546	Similar to C<< ->build >>, except it starts a thread, and never fails (you	1871	Similar to C<< ->build >>, except it starts a thread, and never fails (you
1547	need to check the compilation status form the callback, or by polling).	1872	need to check the compilation status form the callback, or by polling).
1548		1873
		1874	=item $program->compile (\@devices = undef, $options = "", \%headers = undef, $cb->($program) = undef)
		1875
		1876	Compiles the given program for the given devices (or all devices if
		1877	undef). If C<$headers> is given, it must be a hashref with include name =>
		1878	OpenCL::Program pairs.
		1879
		1880	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCompileProgram.html>
		1881
1549	=item $packed_value = $program->build_info ($device, $name)	1882	=item $packed_value = $program->build_info ($device, $name)
1550		1883
1551	Similar to C<< $platform->info >>, but returns build info for a previous	1884	Similar to C<< $platform->info >>, but returns build info for a previous
1552	build attempt for the given device.	1885	build attempt for the given device.
1553		1886
		1887	binary_type: OpenCL::PROGRAM_BINARY_TYPE_NONE,
		1888	OpenCL::PROGRAM_BINARY_TYPE_COMPILED_OBJECT,
		1889	OpenCL::PROGRAM_BINARY_TYPE_LIBRARY,
		1890	OpenCL::PROGRAM_BINARY_TYPE_EXECUTABLE.
		1891
1554	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>	1892	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>
1555		1893
1556	=item $kernel = $program->kernel ($function_name)	1894	=item $kernel = $program->kernel ($function_name)
1557		1895
1558	Creates an OpenCL::Kernel object out of the named C<__kernel> function in	1896	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
…		…
1568		1906
1569	=for gengetinfo begin program_build	1907	=for gengetinfo begin program_build
1570		1908
1571	=item $build_status = $program->build_status ($device)	1909	=item $build_status = $program->build_status ($device)
1572		1910
1573	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result.	1911	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_STATUS> and returns the result.
1574		1912
1575	=item $string = $program->build_options ($device)	1913	=item $string = $program->build_options ($device)
1576		1914
1577	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result.	1915	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_OPTIONS> and returns the result.
1578		1916
1579	=item $string = $program->build_log ($device)	1917	=item $string = $program->build_log ($device)
1580		1918
1581	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result.	1919	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_LOG> and returns the result.
		1920
		1921	=item $binary_type = $program->binary_type ($device)
		1922
		1923	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BINARY_TYPE> and returns the result.
1582		1924
1583	=for gengetinfo end program_build	1925	=for gengetinfo end program_build
1584		1926
1585	=item $packed_value = $program->info ($name)	1927	=item $packed_value = $program->info ($name)
1586		1928
…		…
1590		1932
1591	=for gengetinfo begin program	1933	=for gengetinfo begin program
1592		1934
1593	=item $uint = $program->reference_count	1935	=item $uint = $program->reference_count
1594		1936
1595	Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result.	1937	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_REFERENCE_COUNT> and returns the result.
1596		1938
1597	=item $ctx = $program->context	1939	=item $ctx = $program->context
1598		1940
1599	Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result.	1941	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_CONTEXT> and returns the result.
1600		1942
1601	=item $uint = $program->num_devices	1943	=item $uint = $program->num_devices
1602		1944
1603	Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result.	1945	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_NUM_DEVICES> and returns the result.
1604		1946
1605	=item @devices = $program->devices	1947	=item @devices = $program->devices
1606		1948
1607	Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result.	1949	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_DEVICES> and returns the result.
1608		1950
1609	=item $string = $program->source	1951	=item $string = $program->source
1610		1952
1611	Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result.	1953	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_SOURCE> and returns the result.
1612		1954
1613	=item @ints = $program->binary_sizes	1955	=item @ints = $program->binary_sizes
1614		1956
1615	Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result.	1957	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_BINARY_SIZES> and returns the result.
1616		1958
1617	=for gengetinfo end program	1959	=for gengetinfo end program
1618		1960
1619	=item @blobs = $program->binaries	1961	=item @blobs = $program->binaries
1620		1962
…		…
1641		1983
1642	=for gengetinfo begin kernel	1984	=for gengetinfo begin kernel
1643		1985
1644	=item $string = $kernel->function_name	1986	=item $string = $kernel->function_name
1645		1987
1646	Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result.	1988	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_FUNCTION_NAME> and returns the result.
1647		1989
1648	=item $uint = $kernel->num_args	1990	=item $uint = $kernel->num_args
1649		1991
1650	Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result.	1992	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_NUM_ARGS> and returns the result.
1651		1993
1652	=item $uint = $kernel->reference_count	1994	=item $uint = $kernel->reference_count
1653		1995
1654	Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result.	1996	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_REFERENCE_COUNT> and returns the result.
1655		1997
1656	=item $ctx = $kernel->context	1998	=item $ctx = $kernel->context
1657		1999
1658	Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result.	2000	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_CONTEXT> and returns the result.
1659		2001
1660	=item $program = $kernel->program	2002	=item $program = $kernel->program
1661		2003
1662	Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result.	2004	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_PROGRAM> and returns the result.
1663		2005
1664	=for gengetinfo end kernel	2006	=for gengetinfo end kernel
1665		2007
1666	=item $packed_value = $kernel->work_group_info ($device, $name)	2008	=item $packed_value = $kernel->work_group_info ($device, $name)
1667		2009
1668	See C<< $platform->info >> for details.	2010	See C<< $platform->info >> for details.
1669		2011
1670	The reason this method is not called C<info> is that there already is an
1671	C<< ->info >> method.
1672
1673	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>	2012	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
1674		2013
1675	=for gengetinfo begin kernel_work_group	2014	=for gengetinfo begin kernel_work_group
1676		2015
1677	=item $int = $kernel->work_group_size ($device)	2016	=item $int = $kernel->work_group_size ($device)
1678		2017
1679	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result.	2018	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_WORK_GROUP_SIZE> and returns the result.
1680		2019
1681	=item @ints = $kernel->compile_work_group_size ($device)	2020	=item @ints = $kernel->compile_work_group_size ($device)
1682		2021
1683	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.	2022	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.
1684		2023
1685	=item $ulong = $kernel->local_mem_size ($device)	2024	=item $ulong = $kernel->local_mem_size ($device)
1686		2025
1687	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result.	2026	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_LOCAL_MEM_SIZE> and returns the result.
1688		2027
1689	=item $int = $kernel->preferred_work_group_size_multiple ($device)	2028	=item $int = $kernel->preferred_work_group_size_multiple ($device)
1690		2029
1691	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.	2030	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.
1692		2031
1693	=item $ulong = $kernel->private_mem_size ($device)	2032	=item $ulong = $kernel->private_mem_size ($device)
1694		2033
1695	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.	2034	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PRIVATE_MEM_SIZE> and returns the result.
1696		2035
1697	=for gengetinfo end kernel_work_group	2036	=for gengetinfo end kernel_work_group
		2037
		2038	=item $packed_value = $kernel->arg_info ($idx, $name)
		2039
		2040	See C<< $platform->info >> for details.
		2041
		2042	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clGetKernelArgInfo.html>
		2043
		2044	=for gengetinfo begin kernel_arg
		2045
		2046	=item $kernel_arg_address_qualifier = $kernel->arg_address_qualifier ($idx)
		2047
		2048	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ADDRESS_QUALIFIER> and returns the result.
		2049
		2050	=item $kernel_arg_access_qualifier = $kernel->arg_access_qualifier ($idx)
		2051
		2052	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ACCESS_QUALIFIER> and returns the result.
		2053
		2054	=item $string = $kernel->arg_type_name ($idx)
		2055
		2056	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_NAME> and returns the result.
		2057
		2058	=item $kernel_arg_type_qualifier = $kernel->arg_type_qualifier ($idx)
		2059
		2060	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_QUALIFIER> and returns the result.
		2061
		2062	=item $string = $kernel->arg_name ($idx)
		2063
		2064	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_NAME> and returns the result.
		2065
		2066	=for gengetinfo end kernel_arg
1698		2067
1699	=item $kernel->setf ($format, ...)	2068	=item $kernel->setf ($format, ...)
1700		2069
1701	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic	2070	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
1702	way to set arguments (and with OpenCL 1.2 it might be rather slow), you	2071	way to set arguments (and with OpenCL 1.2 it might be rather slow), you
…		…
1814		2183
1815	=for gengetinfo begin event	2184	=for gengetinfo begin event
1816		2185
1817	=item $queue = $event->command_queue	2186	=item $queue = $event->command_queue
1818		2187
1819	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result.	2188	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_QUEUE> and returns the result.
1820		2189
1821	=item $command_type = $event->command_type	2190	=item $command_type = $event->command_type
1822		2191
1823	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result.	2192	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_TYPE> and returns the result.
1824		2193
1825	=item $uint = $event->reference_count	2194	=item $uint = $event->reference_count
1826		2195
1827	Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result.	2196	Calls C<clGetEventInfo> with C<OpenCL::EVENT_REFERENCE_COUNT> and returns the result.
1828		2197
1829	=item $uint = $event->command_execution_status	2198	=item $uint = $event->command_execution_status
1830		2199
1831	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result.	2200	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_EXECUTION_STATUS> and returns the result.
1832		2201
1833	=item $ctx = $event->context	2202	=item $ctx = $event->context
1834		2203
1835	Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result.	2204	Calls C<clGetEventInfo> with C<OpenCL::EVENT_CONTEXT> and returns the result.
1836		2205
1837	=for gengetinfo end event	2206	=for gengetinfo end event
1838		2207
1839	=item $packed_value = $ev->profiling_info ($name)	2208	=item $packed_value = $ev->profiling_info ($name)
1840		2209
…		…
1847		2216
1848	=for gengetinfo begin profiling	2217	=for gengetinfo begin profiling
1849		2218
1850	=item $ulong = $event->profiling_command_queued	2219	=item $ulong = $event->profiling_command_queued
1851		2220
1852	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result.	2221	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_QUEUED> and returns the result.
1853		2222
1854	=item $ulong = $event->profiling_command_submit	2223	=item $ulong = $event->profiling_command_submit
1855		2224
1856	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result.	2225	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_SUBMIT> and returns the result.
1857		2226
1858	=item $ulong = $event->profiling_command_start	2227	=item $ulong = $event->profiling_command_start
1859		2228
1860	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result.	2229	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_START> and returns the result.
1861		2230
1862	=item $ulong = $event->profiling_command_end	2231	=item $ulong = $event->profiling_command_end
1863		2232
1864	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result.	2233	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_END> and returns the result.
1865		2234
1866	=for gengetinfo end profiling	2235	=for gengetinfo end profiling
1867		2236
1868	=back	2237	=back
1869		2238
…		…
1876	=item $ev->set_status ($execution_status)	2245	=item $ev->set_status ($execution_status)
1877		2246
1878	Sets the execution status of the user event. Can only be called once,	2247	Sets the execution status of the user event. Can only be called once,
1879	either with OpenCL::COMPLETE or a negative number as status.	2248	either with OpenCL::COMPLETE or a negative number as status.
1880		2249
		2250	execution_status: OpenCL::COMPLETE or a negative integer.
		2251
1881	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>	2252	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1882		2253
1883	=back	2254	=back
		2255
		2256	=head2 THE OpenCL::Mapped CLASS
		2257
		2258	This class represents objects mapped into host memory. They are
		2259	represented by a blessed string scalar. The string data is the mapped
		2260	memory area, that is, if you read or write it, then the mapped object is
		2261	accessed directly.
		2262
		2263	You must only ever use operations that modify the string in-place - for
		2264	example, a C<substr> that doesn't change the length, or maybe a regex that
		2265	doesn't change the length. Any other operation might cause the data to be
		2266	copied.
		2267
		2268	When the object is destroyed it will enqueue an implicit unmap operation
		2269	on the queue that was used to create it.
		2270
		2271	Keep in mind that you I<need> to unmap (or destroy) mapped objects before
		2272	OpenCL sees the changes, even if some implementations don't need this
		2273	sometimes.
		2274
		2275	Example, replace the first two floats in the mapped buffer by 1 and 2.
		2276
		2277	my $mapped = $queue->map_buffer ($buf, ...
		2278	$mapped->event->wait; # make sure it's there
		2279
		2280	# now replace first 8 bytes by new data, which is exactly 8 bytes long
		2281	# we blindly assume device endianness to equal host endianness
		2282	# (and of course, we assume iee 754 single precision floats :)
		2283	substr $$mapped, 0, 8, pack "f*", 1, 2;
		2284
		2285	=over 4
		2286
		2287	=item $ev = $mapped->unmap ($wait_events...)
		2288
		2289	Unmaps the mapped memory object, using the queue originally used to create
		2290	it, quite similarly to C<< $queue->unmap ($mapped, ...) >>.
		2291
		2292	=item $bool = $mapped->mapped
		2293
		2294	Returns whether the object is still mapped - true before an C<unmap> is
		2295	enqueued, false afterwards.
		2296
		2297	=item $ev = $mapped->event
		2298
		2299	Return the event object associated with the mapped object. Initially, this
		2300	will be the event object created when mapping the object, and after an
		2301	unmap, this will be the event object that the unmap operation created.
		2302
		2303	=item $mapped->wait
		2304
		2305	Same as C<< $mapped->event->wait >> - makes sure no operations on this
		2306	mapped object are outstanding.
		2307
		2308	=item $bytes = $mapped->size
		2309
		2310	Returns the size of the mapped area, in bytes. Same as C<length $$mapped>.
		2311
		2312	=item $ptr = $mapped->ptr
		2313
		2314	Returns the raw memory address of the mapped area.
		2315
		2316	=item $mapped->set ($offset, $data)
		2317
		2318	Replaces the data at the given C<$offset> in the memory area by the new
		2319	C<$data>. This method is safer than direct manipulation of C<$mapped>
		2320	because it does bounds-checking, but also slower.
		2321
		2322	=item $data = $mapped->get ($offset, $length)
		2323
		2324	Returns (without copying) a scalar representing the data at the given
		2325	C<$offset> and C<$length> in the mapped memory area. This is the same as
		2326	the following substr, except much slower;
		2327
		2328	$data = substr $$mapped, $offset, $length
		2329
		2330	=cut
		2331
		2332	sub OpenCL::Mapped::get {
		2333	substr ${$_[0]}, $_[1], $_[2]
		2334	}
		2335
		2336	=back
		2337
		2338	=head2 THE OpenCL::MappedBuffer CLASS
		2339
		2340	This is a subclass of OpenCL::Mapped, representing mapped buffers.
		2341
		2342	=head2 THE OpenCL::MappedImage CLASS
		2343
		2344	This is a subclass of OpenCL::Mapped, representing mapped images.
		2345
		2346	=over 4
		2347
		2348	=item $bytes = $mapped->row_pitch
		2349
		2350	=item $bytes = $mapped->slice_pitch
		2351
		2352	Return the row or slice pitch of the image that has been mapped.
		2353
		2354	=back
		2355
1884		2356
1885	=cut	2357	=cut
1886		2358
1887	1;	2359	1;
1888		2360

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