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Revision 1.50 by root, Tue Apr 24 13:30:49 2012 UTC vs.
Revision 1.78 by root, Sat May 5 13:07:19 2012 UTC

…		…
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 spec used to develop this module (1.2 spec was available, but	48	The OpenCL specs used to develop this module - download these and keept
49	no implementation was available to me :).	49	hema round, they are required reference material:
50		50
51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf	51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf
		52	http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf
		53	http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf
52		54
53	OpenCL manpages:	55	OpenCL manpages:
54		56
55	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/	57	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/
		58	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/
56		59
57	If you are into UML class diagrams, the following diagram might help - if	60	If you are into UML class diagrams, the following diagram might help - if
58	not, it will be mildly cobfusing:	61	not, it will be mildly confusing (also, the class hierarchy of this module
		62	is much more fine-grained):
59		63
60	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/classDiagram.html	64	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/classDiagram.html
61		65
62	Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it	66	Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it
63	is, but at least it's free of charge:	67	is, but at least it's free of charge:
64		68
65	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf	69	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf
…		…
92	initialised at creation time).	96	initialised at creation time).
93		97
94	Enqueue the kernel execution.	98	Enqueue the kernel execution.
95		99
96	Enqueue buffer reads for your output buffer to read results.	100	Enqueue buffer reads for your output buffer to read results.
		101
		102	=head1 OPENCL 1.1 VS. OPENCL 1.2
		103
		104	This module supports both OpenCL version 1.1 and 1.2, although the OpenCL
		105	1.2 interface hasn't been tested much for lack of availability of an
		106	actual implementation.
		107
		108	Every function or method in this manual page that interfaces to a
		109	particular OpenCL function has a link to the its C manual page.
		110
		111	If the link contains a F<1.1>, then this function is an OpenCL 1.1
		112	function. Most but not all also exist in OpenCL 1.2, and this module
		113	tries to emulate the missing ones for you, when told to do so at
		114	compiletime. You cna check whether a function was removed in OpenCL 1.2 by
		115	replacing the F<1.1> component in the URL by F<1.2>.
		116
		117	If the link contains a F<1.2>, then this is a OpenCL 1.2-only
		118	function. Even if the module was compiled with OpenCL 1.2 header files
		119	and has an 1.2 OpenCL library, calling such a function on a platform that
		120	doesn't implement 1.2 causes undefined behaviour, usually a crash (But
		121	this is not guaranteed).
		122
		123	You can find out whether this module was compiled to prefer 1.1
		124	functionality by ooking at C<OpenCL::PREFER_1_1> - if it is true, then
		125	1.1 functions generally are implemented using 1.1 OpenCL functions. If it
		126	is false, then 1.1 functions missing from 1.2 are emulated by calling 1.2
		127	fucntions.
		128
		129	This is a somewhat sorry state of affairs, but the Khronos group choose to
		130	make every release of OpenCL source and binary incompatible with previous
		131	releases.
97		132
98	=head1 EXAMPLES	133	=head1 EXAMPLES
99		134
100	=head2 Enumerate all devices and get contexts for them.	135	=head2 Enumerate all devices and get contexts for them.
101		136
…		…
138	=head2 Create a buffer with some predefined data, read it back synchronously,	173	=head2 Create a buffer with some predefined data, read it back synchronously,
139	then asynchronously.	174	then asynchronously.
140		175
141	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");	176	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");
142		177
143	$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data);	178	$queue->read_buffer ($buf, 1, 1, 3, my $data);
144	print "$data\n";	179	print "$data\n";
145		180
146	my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data);	181	my $ev = $queue->read_buffer ($buf, 0, 1, 3, my $data);
147	$ev->wait;	182	$ev->wait;
148	print "$data\n"; # prints "elm"	183	print "$data\n"; # prints "elm"
149		184
150	=head2 Create and build a program, then create a kernel out of one of its	185	=head2 Create and build a program, then create a kernel out of one of its
151	functions.	186	functions.
…		…
157	$id = get_global_id (0);	192	$id = get_global_id (0);
158	output [id] = input [id] * input [id];	193	output [id] = input [id] * input [id];
159	}	194	}
160	';	195	';
161		196
162	my $prog = $ctx->program_with_source ($src);	197	my $prog = $ctx->build_program ($src);
163
164	# build croaks on compile errors, so catch it and print the compile errors
165	eval { $prog->build ($dev, "-cl-fast-relaxed-math"); 1 }
166	or die $prog->build_log;
167
168	my $kernel = $prog->kernel ("squareit");	198	my $kernel = $prog->kernel ("squareit");
169		199
170	=head2 Create some input and output float buffers, then call the	200	=head2 Create some input and output float buffers, then call the
171	'squareit' kernel on them.	201	'squareit' kernel on them.
172		202
…		…
176	# set buffer	206	# set buffer
177	$kernel->set_buffer (0, $input);	207	$kernel->set_buffer (0, $input);
178	$kernel->set_buffer (1, $output);	208	$kernel->set_buffer (1, $output);
179		209
180	# execute it for all 4 numbers	210	# execute it for all 4 numbers
181	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	211	$queue->nd_range_kernel ($kernel, undef, [4], undef);
182		212
183	# enqueue a synchronous read	213	# enqueue a synchronous read
184	$queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	214	$queue->read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
185		215
186	# print the results:	216	# print the results:
187	printf "%s\n", join ", ", unpack "f*", $data;	217	printf "%s\n", join ", ", unpack "f*", $data;
188		218
189	=head2 The same enqueue operations as before, but assuming an out-of-order queue,	219	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
190	showing off barriers.	220	showing off barriers.
191		221
192	# execute it for all 4 numbers	222	# execute it for all 4 numbers
193	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	223	$queue->nd_range_kernel ($kernel, undef, [4], undef);
194		224
195	# enqueue a barrier to ensure in-order execution	225	# enqueue a barrier to ensure in-order execution
196	$queue->enqueue_barrier;	226	$queue->barrier;
197		227
198	# enqueue an async read	228	# enqueue an async read
199	$queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	229	$queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
200		230
201	# wait for all requests to finish	231	# wait for all requests to finish
202	$queue->finish;	232	$queue->finish;
203		233
204	=head2 The same enqueue operations as before, but assuming an out-of-order queue,	234	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
205	showing off event objects and wait lists.	235	showing off event objects and wait lists.
206		236
207	# execute it for all 4 numbers	237	# execute it for all 4 numbers
208	my $ev = $queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	238	my $ev = $queue->nd_range_kernel ($kernel, undef, [4], undef);
209		239
210	# enqueue an async read	240	# enqueue an async read
211	$ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);	241	$ev = $queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);
212		242
213	# wait for the last event to complete	243	# wait for the last event to complete
214	$ev->wait;	244	$ev->wait;
215		245
216	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia	246	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia
217	set tunnel effect.	247	set flight effect.
218		248
219	This is quite a long example to get you going.	249	This is quite a long example to get you going - you can download it from
		250	L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>.
220		251
221	use OpenGL ":all";	252	use OpenGL ":all";
222	use OpenCL;	253	use OpenCL;
223		254
		255	my $S = $ARGV[0] || 256; # window/texture size, smaller is faster
		256
224	# open a window and create a gl texture	257	# open a window and create a gl texture
225	OpenGL::glpOpenWindow width => 256, height => 256;	258	OpenGL::glpOpenWindow width => $S, height => $S;
226	my $texid = glGenTextures_p 1;	259	my $texid = glGenTextures_p 1;
227	glBindTexture GL_TEXTURE_2D, $texid;	260	glBindTexture GL_TEXTURE_2D, $texid;
228	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;	261	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, $S, $S, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;
229		262
230	# find and use the first opencl device that let's us get a shared opengl context	263	# find and use the first opencl device that let's us get a shared opengl context
231	my $platform;	264	my $platform;
232	my $dev;	265	my $dev;
233	my $ctx;	266	my $ctx;
…		…
252	# now the boring opencl code	285	# now the boring opencl code
253	my $src = <<EOF;	286	my $src = <<EOF;
254	kernel void	287	kernel void
255	juliatunnel (write_only image2d_t img, float time)	288	juliatunnel (write_only image2d_t img, float time)
256	{	289	{
257	float2 p = (float2)(get_global_id (0), get_global_id (1)) / 256.f * 2.f - 1.f;	290	int2 xy = (int2)(get_global_id (0), get_global_id (1));
		291	float2 p = convert_float2 (xy) / $S.f * 2.f - 1.f;
258		292
259	float2 m = (float2)(1.f, p.y) / fabs (p.x);	293	float2 m = (float2)(1.f, p.y) / fabs (p.x); // tunnel
260	m.x = fabs (fmod (m.x + time * 0.05f, 4.f)) - 2.f;	294	m.x = fabs (fmod (m.x + time * 0.05f, 4.f) - 2.f);
261		295
262	float2 z = m;	296	float2 z = m;
263	float2 c = (float2)(sin (time * 0.05005), cos (time * 0.06001));	297	float2 c = (float2)(sin (time * 0.01133f), cos (time * 0.02521f));
264		298
265	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i)	299	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i) // standard julia
266	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;	300	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
267		301
268	float3 colour = (float3)(z.x, z.y, z.x * z.y);	302	float3 colour = (float3)(z.x, z.y, atan2 (z.y, z.x));
269	write_imagef (img, (int2)(get_global_id (0), get_global_id (1)), (float4)(colour * p.x * p.x, 1.));	303	write_imagef (img, xy, (float4)(colour * p.x * p.x, 1.));
270	}	304	}
271	EOF	305	EOF
		306
272	my $prog = $ctx->program_with_source ($src);	307	my $prog = $ctx->build_program ($src);
273	eval { $prog->build ($dev); 1 }
274	or die $prog->build_log ($dev);
275
276	my $kernel = $prog->kernel ("juliatunnel");	308	my $kernel = $prog->kernel ("juliatunnel");
277		309
278	# program compiled, kernel ready, now draw and loop	310	# program compiled, kernel ready, now draw and loop
279		311
280	for (my $time; ; ++$time) {	312	for (my $time; ; ++$time) {
281	# acquire objects from opengl	313	# acquire objects from opengl
282	$queue->enqueue_acquire_gl_objects ([$tex]);	314	$queue->acquire_gl_objects ([$tex]);
283		315
284	# configure and run our kernel	316	# configure and run our kernel
285	$kernel->set_image2d (0, $tex);	317	$kernel->setf ("mf", $tex, $time*2); # mf = memory object, float
286	$kernel->set_float (1, $time);
287	$queue->enqueue_nd_range_kernel ($kernel, undef, [256, 256], undef);	318	$queue->nd_range_kernel ($kernel, undef, [$S, $S], undef);
288		319
289	# release objects to opengl again	320	# release objects to opengl again
290	$queue->enqueue_release_gl_objects ([$tex]);	321	$queue->release_gl_objects ([$tex]);
291		322
292	# wait	323	# wait
293	$queue->finish;	324	$queue->finish;
294		325
295	# now draw the texture, the defaults should be all right	326	# now draw the texture, the defaults should be all right
…		…
305		336
306	glXSwapBuffers;	337	glXSwapBuffers;
307		338
308	select undef, undef, undef, 1/60;	339	select undef, undef, undef, 1/60;
309	}	340	}
		341
		342	=head2 How to modify the previous example to not rely on GL sharing.
		343
		344	For those poor souls with only a sucky CPU OpenCL implementation, you
		345	currently have to read the image into some perl scalar, and then modify a
		346	texture or use glDrawPixels or so).
		347
		348	First, when you don't need gl sharing, you can create the context much simpler:
		349
		350	$ctx = $platform->context (undef, [$dev])
		351
		352	To use a texture, you would modify the above example by creating an
		353	OpenCL::Image manually instead of deriving it from a texture:
		354
		355	my $tex = $ctx->image2d (OpenCL::MEM_WRITE_ONLY, OpenCL::RGBA, OpenCL::UNORM_INT8, $S, $S);
		356
		357	And in the draw loop, intead of acquire_gl_objects/release_gl_objects, you
		358	would read the image2d after the kernel has written it:
		359
		360	$queue->read_image ($tex, 0, 0, 0, 0, $S, $S, 1, 0, 0, my $data);
		361
		362	And then you would upload the pixel data to the texture (or use glDrawPixels):
		363
		364	glTexSubImage2D_s GL_TEXTURE_2D, 0, 0, 0, $S, $S, GL_RGBA, GL_UNSIGNED_BYTE, $data;
		365
		366	The fully modified example can be found at
		367	L<http://cvs.schmorp.de/OpenCL/examples/juliaflight-nosharing>.
		368
		369	=head2 Julia sets look soooo 80ies.
		370
		371	Then colour them differently, e.g. using orbit traps! Replace the loop and
		372	colour calculation from the previous examples by this:
		373
		374	float2 dm = (float2)(1.f, 1.f);
		375
		376	for (int i = 0; i < 25; ++i)
		377	{
		378	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
		379	dm = fmin (dm, (float2)(fabs (dot (z, z) - 1.f), fabs (z.x - 1.f)));
		380	}
		381
		382	float3 colour = (float3)(dm.x * dm.y, dm.x * dm.y, dm.x);
		383
		384	Also try C<-10.f> instead of C<-1.f>.
310		385
311	=head1 DOCUMENTATION	386	=head1 DOCUMENTATION
312		387
313	=head2 BASIC CONVENTIONS	388	=head2 BASIC CONVENTIONS
314		389
…		…
383		458
384	For this to work, the OpenGL library must be loaded, a GLX context must	459	For this to work, the OpenGL library must be loaded, a GLX context must
385	have been created and be made current, and C<dlsym> must be available and	460	have been created and be made current, and C<dlsym> must be available and
386	capable of finding the function via C<RTLD_DEFAULT>.	461	capable of finding the function via C<RTLD_DEFAULT>.
387		462
		463	=head2 EVENT SYSTEM
		464
		465	OpenCL can generate a number of (potentially) asynchronous events, for
		466	example, after compiling a program, to signal a context-related error or,
		467	perhaps most important, to signal completion of queued jobs (by setting
		468	callbacks on OpenCL::Event objects).
		469
		470	The OpenCL module converts all these callbacks into events - you can
		471	still register callbacks, but they are not executed when your OpenCL
		472	implementation calls the actual callback, but only later. Therefore, none
		473	of the limitations of OpenCL callbacks apply to the perl implementation:
		474	it is perfectly safe to make blocking operations from event callbacks, and
		475	enqueued operations don't need to be flushed.
		476
		477	To facilitate this, this module maintains an event queue - each
		478	time an asynchronous event happens, it is queued, and perl will be
		479	interrupted. This is implemented via the L<Async::Interrupt> module. In
		480	addition, this module has L<AnyEvent> support, so it can seamlessly
		481	integrate itself into many event loops.
		482
		483	Since L<Async::Interrupt> is a bit hard to understand, here are some case examples:
		484
		485	=head3 Don't use callbacks.
		486
		487	When your program never uses any callbacks, then there will never be any
		488	notifications you need to take care of, and therefore no need to worry
		489	about all this.
		490
		491	You can achieve a great deal by explicitly waiting for events, or using
		492	barriers and flush calls. In many programs, there is no need at all to
		493	tinker with asynchronous events.
		494
		495	=head3 Use AnyEvent
		496
		497	This module automatically registers a watcher that invokes all outstanding
		498	event callbacks when AnyEvent is initialised (and block asynchronous
		499	interruptions). Using this mode of operations is the safest and most
		500	recommended one.
		501
		502	To use this, simply use AnyEvent and this module normally, make sure you
		503	have an event loop running:
		504
		505	use Gtk2 -init;
		506	use AnyEvent;
		507
		508	# initialise AnyEvent, by creating a watcher, or:
		509	AnyEvent::detect;
		510
		511	my $e = $queue->marker;
		512	$e->cb (sub {
		513	warn "opencl is finished\n";
		514	})
		515
		516	main Gtk2;
		517
		518	Note that this module will not initialise AnyEvent for you. Before
		519	AnyEvent is initialised, the module will asynchronously interrupt perl
		520	instead. To avoid any surprises, it's best to explicitly initialise
		521	AnyEvent.
		522
		523	You can temporarily enable asynchronous interruptions (see next paragraph)
		524	by calling C<$OpenCL::INTERRUPT->unblock> and disable them again by
		525	calling C<$OpenCL::INTERRUPT->block>.
		526
		527	=head3 Let yourself be interrupted at any time
		528
		529	This mode is the default unless AnyEvent is loaded and initialised. In
		530	this mode, OpenCL asynchronously interrupts a running perl program. The
		531	emphasis is on both I<asynchronously> and I<running> here.
		532
		533	Asynchronously means that perl might execute your callbacks at any
		534	time. For example, in the following code (I<THAT YOU SHOULD NOT COPY>),
		535	the C<until> loop following the marker call will be interrupted by the
		536	callback:
		537
		538	my $e = $queue->marker;
		539	my $flag;
		540	$e->cb (sub { $flag = 1 });
		541	1 until $flag;
		542	# $flag is now 1
		543
		544	The reason why you shouldn't blindly copy the above code is that
		545	busy waiting is a really really bad thing, and really really bad for
		546	performance.
		547
		548	While at first this asynchronous business might look exciting, it can be
		549	really hard, because you need to be prepared for the callback code to be
		550	executed at any time, which limits the amount of things the callback code
		551	can do safely.
		552
		553	This can be mitigated somewhat by using C<<
		554	$OpenCL::INTERRUPT->scope_block >> (see the L<Async::Interrupt>
		555	documentation for details).
		556
		557	The other problem is that your program must be actively I<running> to be
		558	interrupted. When you calculate stuff, your program is running. When you
		559	hang in some C functions or other block execution (by calling C<sleep>,
		560	C<select>, running an event loop and so on), your program is waiting, not
		561	running.
		562
		563	One way around that would be to attach a read watcher to your event loop,
		564	listening for events on C<< $OpenCL::INTERRUPT->pipe_fileno >>, using a
		565	dummy callback (C<sub { }>) to temporarily execute some perl code.
		566
		567	That is then awfully close to using the built-in AnyEvent support above,
		568	though, so consider that one instead.
		569
		570	=head3 Be creative
		571
		572	OpenCL exports the L<Async::Interrupt> object it uses in the global
		573	variable C<$OpenCL::INTERRUPT>. You can configure it in any way you like.
		574
		575	So if you want to feel like a real pro, err, wait, if you feel no risk
		576	menas no fun, you can experiment by implementing your own mode of
		577	operations.
		578
		579	=cut
		580
		581	package OpenCL;
		582
		583	use common::sense;
		584	use Carp ();
		585	use Async::Interrupt ();
		586
		587	our $POLL_FUNC; # set by XS
		588
		589	BEGIN {
		590	our $VERSION = '0.99';
		591
		592	require XSLoader;
		593	XSLoader::load (__PACKAGE__, $VERSION);
		594
		595	@OpenCL::Platform::ISA =
		596	@OpenCL::Device::ISA =
		597	@OpenCL::Context::ISA =
		598	@OpenCL::Queue::ISA =
		599	@OpenCL::Memory::ISA =
		600	@OpenCL::Sampler::ISA =
		601	@OpenCL::Program::ISA =
		602	@OpenCL::Kernel::ISA =
		603	@OpenCL::Event::ISA = OpenCL::Object::;
		604
		605	@OpenCL::SubDevice::ISA = OpenCL::Device::;
		606
		607	@OpenCL::Buffer::ISA =
		608	@OpenCL::Image::ISA = OpenCL::Memory::;
		609
		610	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
		611
		612	@OpenCL::Image2D::ISA =
		613	@OpenCL::Image3D::ISA =
		614	@OpenCL::Image2DArray::ISA =
		615	@OpenCL::Image1D::ISA =
		616	@OpenCL::Image1DArray::ISA =
		617	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
		618
		619	@OpenCL::UserEvent::ISA = OpenCL::Event::;
		620
		621	@OpenCL::MappedBuffer::ISA =
		622	@OpenCL::MappedImage::ISA = OpenCL::Mapped::;
		623	}
		624
388	=head2 THE OpenCL PACKAGE	625	=head2 THE OpenCL PACKAGE
389		626
390	=over 4	627	=over 4
391		628
392	=item $int = OpenCL::errno	629	=item $int = OpenCL::errno
393		630
394	The last error returned by a function - it's only valid after an error occured	631	The last error returned by a function - it's only valid after an error occured
395	and before calling another OpenCL function.	632	and before calling another OpenCL function.
396		633
397	=item $str = OpenCL::err2str $errval	634	=item $str = OpenCL::err2str [$errval]
398		635
399	Comverts an error value into a human readable string.	636	Converts an error value into a human readable string. IF no error value is
		637	given, then the last error will be used (as returned by OpenCL::errno).
400		638
401	=item $str = OpenCL::enum2str $enum	639	=item $str = OpenCL::enum2str $enum
402		640
403	Converts most enum values (of parameter names, image format constants,	641	Converts most enum values (of parameter names, image format constants,
404	object types, addressing and filter modes, command types etc.) into a	642	object types, addressing and filter modes, command types etc.) into a
…		…
410		648
411	Returns all available OpenCL::Platform objects.	649	Returns all available OpenCL::Platform objects.
412		650
413	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>	651	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
414		652
415	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef	653	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr
416		654
417	Tries to create a context from a default device and platform - never worked for me.	655	Tries to create a context from a default device and platform type - never worked for me.
		656	Consider using C<< $platform->context_from_type >> instead.
		657
		658	type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU, OpenCL::DEVICE_TYPE_GPU,
		659	OpenCL::DEVICE_TYPE_ACCELERATOR, OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
418		660
419	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	661	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
420		662
		663	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
		664
		665	Create a new OpenCL::Context object using the given device object(s).
		666	Consider using C<< $platform->context >> instead.
		667
		668	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
		669
421	=item OpenCL::wait_for_events $wait_events...	670	=item OpenCL::wait_for_events $wait_events...
422		671
423	Waits for all events to complete.	672	Waits for all events to complete.
424		673
425	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	674	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
426		675
		676	=item OpenCL::poll
		677
		678	Checks if there are any outstanding events (see L<EVENT SYSTEM>) and
		679	invokes their callbacks.
		680
		681	=item $OpenCL::INTERRUPT
		682
		683	The L<Async::Interrupt> object used to signal asynchronous events (see
		684	L<EVENT SYSTEM>).
		685
		686	=cut
		687
		688	our $INTERRUPT = new Async::Interrupt c_cb => [$POLL_FUNC, 0];
		689
		690	&_eq_initialise ($INTERRUPT->signal_func);
		691
		692	=item $OpenCL::WATCHER
		693
		694	The L<AnyEvent> watcher object used to watch for asynchronous events (see
		695	L<EVENT SYSTEM>). This variable is C<undef> until L<AnyEvent> has been
		696	loaded I<and> initialised (e.g. by calling C<AnyEvent::detect>).
		697
		698	=cut
		699
		700	our $WATCHER;
		701
		702	sub _init_anyevent {
		703	$INTERRUPT->block;
		704	$WATCHER = AE::io ($INTERRUPT->pipe_fileno, 0, sub { $INTERRUPT->handle });
		705	}
		706
		707	if (defined $AnyEvent::MODEL) {
		708	_init_anyevent;
		709	} else {
		710	push @AnyEvent::post_detect, \&_init_anyevent;
		711	}
		712
427	=back	713	=back
428		714
		715	=head2 THE OpenCL::Object CLASS
		716
		717	This is the base class for all objects in the OpenCL module. The only
		718	method it implements is the C<id> method, which is only useful if you want
		719	to interface to OpenCL on the C level.
		720
		721	=over 4
		722
		723	=item $iv = $obj->id
		724
		725	OpenCL objects are represented by pointers or integers on the C level. If
		726	you want to interface to an OpenCL object directly on the C level, then
		727	you need this value, which is returned by this method. You should use an
		728	C<IV> type in your code and cast that to the correct type.
		729
		730	=cut
		731
		732	sub OpenCL::Object::id {
		733	ref $_[0] eq "SCALAR"
		734	? ${ $_[0] }
		735	: $_[0][0]
		736	}
		737
		738	=back
		739
429	=head2 THE OpenCL::Platform CLASS	740	=head2 THE OpenCL::Platform CLASS
430		741
431	=over 4	742	=over 4
432		743
433	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)	744	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)
434		745
435	Returns a list of matching OpenCL::Device objects.	746	Returns a list of matching OpenCL::Device objects.
436		747
437	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef)	748	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr)
438		749
439	Tries to create a context. Never worked for me, and you need devices explicitly anyway.	750	Tries to create a context. Never worked for me, and you need devices explicitly anyway.
440		751
441	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	752	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
442		753
443	=item $ctx = $platform->context ($properties = undef, @$devices, $notify = undef)	754	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
444		755
445	Create a new OpenCL::Context object using the given device object(s)- a	756	Create a new OpenCL::Context object using the given device object(s)- a
446	CL_CONTEXT_PLATFORM property is supplied automatically.	757	CL_CONTEXT_PLATFORM property is supplied automatically.
447		758
448	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>	759	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
…		…
467		778
468	=for gengetinfo begin platform	779	=for gengetinfo begin platform
469		780
470	=item $string = $platform->profile	781	=item $string = $platform->profile
471		782
472	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.	783	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_PROFILE> and returns the result.
473		784
474	=item $string = $platform->version	785	=item $string = $platform->version
475		786
476	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result.	787	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VERSION> and returns the result.
477		788
478	=item $string = $platform->name	789	=item $string = $platform->name
479		790
480	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result.	791	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_NAME> and returns the result.
481		792
482	=item $string = $platform->vendor	793	=item $string = $platform->vendor
483		794
484	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result.	795	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VENDOR> and returns the result.
485		796
486	=item $string = $platform->extensions	797	=item $string = $platform->extensions
487		798
488	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result.	799	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_EXTENSIONS> and returns the result.
489		800
490	=for gengetinfo end platform	801	=for gengetinfo end platform
491		802
492	=back	803	=back
493		804
…		…
497		808
498	=item $packed_value = $device->info ($name)	809	=item $packed_value = $device->info ($name)
499		810
500	See C<< $platform->info >> for details.	811	See C<< $platform->info >> for details.
501		812
		813	type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU,
		814	OpenCL::DEVICE_TYPE_GPU, OpenCL::DEVICE_TYPE_ACCELERATOR,
		815	OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
		816
		817	fp_config: OpenCL::FP_DENORM, OpenCL::FP_INF_NAN, OpenCL::FP_ROUND_TO_NEAREST,
		818	OpenCL::FP_ROUND_TO_ZERO, OpenCL::FP_ROUND_TO_INF, OpenCL::FP_FMA,
		819	OpenCL::FP_SOFT_FLOAT, OpenCL::FP_CORRECTLY_ROUNDED_DIVIDE_SQRT.
		820
		821	mem_cache_type: OpenCL::NONE, OpenCL::READ_ONLY_CACHE, OpenCL::READ_WRITE_CACHE.
		822
		823	local_mem_type: OpenCL::LOCAL, OpenCL::GLOBAL.
		824
		825	exec_capabilities: OpenCL::EXEC_KERNEL, OpenCL::EXEC_NATIVE_KERNEL.
		826
		827	command_queue_properties: OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE,
		828	OpenCL::QUEUE_PROFILING_ENABLE.
		829
		830	partition_properties: OpenCL::DEVICE_PARTITION_EQUALLY,
		831	OpenCL::DEVICE_PARTITION_BY_COUNTS, OpenCL::DEVICE_PARTITION_BY_COUNTS_LIST_END,
		832	OpenCL::DEVICE_PARTITION_BY_AFFINITY_DOMAIN.
		833
		834	affinity_domain: OpenCL::DEVICE_AFFINITY_DOMAIN_NUMA,
		835	OpenCL::DEVICE_AFFINITY_DOMAIN_L4_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L3_CACHE,
		836	OpenCL::DEVICE_AFFINITY_DOMAIN_L2_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L1_CACHE,
		837	OpenCL::DEVICE_AFFINITY_DOMAIN_NEXT_PARTITIONABLE.
		838
502	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>	839	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>
503		840
		841	=item @devices = $device->sub_devices (\@properties)
		842
		843	Creates OpencL::SubDevice objects by partitioning an existing device.
		844
		845	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateSubDevices.html>
		846
504	=for gengetinfo begin device	847	=for gengetinfo begin device
505		848
506	=item $device_type = $device->type	849	=item $device_type = $device->type
507		850
508	Calls C<clGetDeviceInfo> with C<CL_DEVICE_TYPE> and returns the result.	851	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_TYPE> and returns the result.
509		852
510	=item $uint = $device->vendor_id	853	=item $uint = $device->vendor_id
511		854
512	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR_ID> and returns the result.	855	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR_ID> and returns the result.
513		856
514	=item $uint = $device->max_compute_units	857	=item $uint = $device->max_compute_units
515		858
516	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_COMPUTE_UNITS> and returns the result.	859	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_COMPUTE_UNITS> and returns the result.
517		860
518	=item $uint = $device->max_work_item_dimensions	861	=item $uint = $device->max_work_item_dimensions
519		862
520	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.	863	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.
521		864
522	=item $int = $device->max_work_group_size	865	=item $int = $device->max_work_group_size
523		866
524	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.	867	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.
525		868
526	=item @ints = $device->max_work_item_sizes	869	=item @ints = $device->max_work_item_sizes
527		870
528	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.	871	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.
529		872
530	=item $uint = $device->preferred_vector_width_char	873	=item $uint = $device->preferred_vector_width_char
531		874
532	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.	875	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.
533		876
534	=item $uint = $device->preferred_vector_width_short	877	=item $uint = $device->preferred_vector_width_short
535		878
536	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.	879	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.
537		880
538	=item $uint = $device->preferred_vector_width_int	881	=item $uint = $device->preferred_vector_width_int
539		882
540	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.	883	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.
541		884
542	=item $uint = $device->preferred_vector_width_long	885	=item $uint = $device->preferred_vector_width_long
543		886
544	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.	887	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.
545		888
546	=item $uint = $device->preferred_vector_width_float	889	=item $uint = $device->preferred_vector_width_float
547		890
548	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.	891	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.
549		892
550	=item $uint = $device->preferred_vector_width_double	893	=item $uint = $device->preferred_vector_width_double
551		894
552	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.	895	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.
553		896
554	=item $uint = $device->max_clock_frequency	897	=item $uint = $device->max_clock_frequency
555		898
556	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.	899	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.
557		900
558	=item $bitfield = $device->address_bits	901	=item $bitfield = $device->address_bits
559		902
560	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ADDRESS_BITS> and returns the result.	903	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ADDRESS_BITS> and returns the result.
561		904
562	=item $uint = $device->max_read_image_args	905	=item $uint = $device->max_read_image_args
563		906
564	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.	907	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.
565		908
566	=item $uint = $device->max_write_image_args	909	=item $uint = $device->max_write_image_args
567		910
568	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.	911	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.
569		912
570	=item $ulong = $device->max_mem_alloc_size	913	=item $ulong = $device->max_mem_alloc_size
571		914
572	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.	915	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.
573		916
574	=item $int = $device->image2d_max_width	917	=item $int = $device->image2d_max_width
575		918
576	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.	919	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.
577		920
578	=item $int = $device->image2d_max_height	921	=item $int = $device->image2d_max_height
579		922
580	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.	923	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.
581		924
582	=item $int = $device->image3d_max_width	925	=item $int = $device->image3d_max_width
583		926
584	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.	927	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.
585		928
586	=item $int = $device->image3d_max_height	929	=item $int = $device->image3d_max_height
587		930
588	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.	931	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.
589		932
590	=item $int = $device->image3d_max_depth	933	=item $int = $device->image3d_max_depth
591		934
592	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.	935	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.
593		936
594	=item $uint = $device->image_support	937	=item $uint = $device->image_support
595		938
596	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE_SUPPORT> and returns the result.	939	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE_SUPPORT> and returns the result.
597		940
598	=item $int = $device->max_parameter_size	941	=item $int = $device->max_parameter_size
599		942
600	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_PARAMETER_SIZE> and returns the result.	943	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_PARAMETER_SIZE> and returns the result.
601		944
602	=item $uint = $device->max_samplers	945	=item $uint = $device->max_samplers
603		946
604	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_SAMPLERS> and returns the result.	947	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_SAMPLERS> and returns the result.
605		948
606	=item $uint = $device->mem_base_addr_align	949	=item $uint = $device->mem_base_addr_align
607		950
608	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.	951	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.
609		952
610	=item $uint = $device->min_data_type_align_size	953	=item $uint = $device->min_data_type_align_size
611		954
612	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.	955	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.
613		956
614	=item $device_fp_config = $device->single_fp_config	957	=item $device_fp_config = $device->single_fp_config
615		958
616	Calls C<clGetDeviceInfo> with C<CL_DEVICE_SINGLE_FP_CONFIG> and returns the result.	959	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_SINGLE_FP_CONFIG> and returns the result.
617		960
618	=item $device_mem_cache_type = $device->global_mem_cache_type	961	=item $device_mem_cache_type = $device->global_mem_cache_type
619		962
620	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.	963	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.
621		964
622	=item $uint = $device->global_mem_cacheline_size	965	=item $uint = $device->global_mem_cacheline_size
623		966
624	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.	967	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.
625		968
626	=item $ulong = $device->global_mem_cache_size	969	=item $ulong = $device->global_mem_cache_size
627		970
628	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.	971	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.
629		972
630	=item $ulong = $device->global_mem_size	973	=item $ulong = $device->global_mem_size
631		974
632	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_SIZE> and returns the result.	975	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_SIZE> and returns the result.
633		976
634	=item $ulong = $device->max_constant_buffer_size	977	=item $ulong = $device->max_constant_buffer_size
635		978
636	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.	979	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.
637		980
638	=item $uint = $device->max_constant_args	981	=item $uint = $device->max_constant_args
639		982
640	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_ARGS> and returns the result.	983	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_ARGS> and returns the result.
641		984
642	=item $device_local_mem_type = $device->local_mem_type	985	=item $device_local_mem_type = $device->local_mem_type
643		986
644	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_TYPE> and returns the result.	987	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_TYPE> and returns the result.
645		988
646	=item $ulong = $device->local_mem_size	989	=item $ulong = $device->local_mem_size
647		990
648	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_SIZE> and returns the result.	991	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_SIZE> and returns the result.
649		992
650	=item $boolean = $device->error_correction_support	993	=item $boolean = $device->error_correction_support
651		994
652	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.	995	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.
653		996
654	=item $int = $device->profiling_timer_resolution	997	=item $int = $device->profiling_timer_resolution
655		998
656	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.	999	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.
657		1000
658	=item $boolean = $device->endian_little	1001	=item $boolean = $device->endian_little
659		1002
660	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ENDIAN_LITTLE> and returns the result.	1003	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ENDIAN_LITTLE> and returns the result.
661		1004
662	=item $boolean = $device->available	1005	=item $boolean = $device->available
663		1006
664	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AVAILABLE> and returns the result.	1007	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AVAILABLE> and returns the result.
665		1008
666	=item $boolean = $device->compiler_available	1009	=item $boolean = $device->compiler_available
667		1010
668	Calls C<clGetDeviceInfo> with C<CL_DEVICE_COMPILER_AVAILABLE> and returns the result.	1011	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_COMPILER_AVAILABLE> and returns the result.
669		1012
670	=item $device_exec_capabilities = $device->execution_capabilities	1013	=item $device_exec_capabilities = $device->execution_capabilities
671		1014
672	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXECUTION_CAPABILITIES> and returns the result.	1015	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXECUTION_CAPABILITIES> and returns the result.
673		1016
674	=item $command_queue_properties = $device->properties	1017	=item $command_queue_properties = $device->properties
675		1018
676	Calls C<clGetDeviceInfo> with C<CL_DEVICE_QUEUE_PROPERTIES> and returns the result.	1019	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_QUEUE_PROPERTIES> and returns the result.
677		1020
678	=item $ = $device->platform	1021	=item $ = $device->platform
679		1022
680	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PLATFORM> and returns the result.	1023	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PLATFORM> and returns the result.
681		1024
682	=item $string = $device->name	1025	=item $string = $device->name
683		1026
684	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NAME> and returns the result.	1027	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NAME> and returns the result.
685		1028
686	=item $string = $device->vendor	1029	=item $string = $device->vendor
687		1030
688	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR> and returns the result.	1031	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR> and returns the result.
689		1032
690	=item $string = $device->driver_version	1033	=item $string = $device->driver_version
691		1034
692	Calls C<clGetDeviceInfo> with C<CL_DRIVER_VERSION> and returns the result.	1035	Calls C<clGetDeviceInfo> with C<OpenCL::DRIVER_VERSION> and returns the result.
693		1036
694	=item $string = $device->profile	1037	=item $string = $device->profile
695		1038
696	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILE> and returns the result.	1039	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILE> and returns the result.
697		1040
698	=item $string = $device->version	1041	=item $string = $device->version
699		1042
700	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VERSION> and returns the result.	1043	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VERSION> and returns the result.
701		1044
702	=item $string = $device->extensions	1045	=item $string = $device->extensions
703		1046
704	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXTENSIONS> and returns the result.	1047	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXTENSIONS> and returns the result.
705		1048
706	=item $uint = $device->preferred_vector_width_half	1049	=item $uint = $device->preferred_vector_width_half
707		1050
708	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.	1051	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.
709		1052
710	=item $uint = $device->native_vector_width_char	1053	=item $uint = $device->native_vector_width_char
711		1054
712	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.	1055	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.
713		1056
714	=item $uint = $device->native_vector_width_short	1057	=item $uint = $device->native_vector_width_short
715		1058
716	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.	1059	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.
717		1060
718	=item $uint = $device->native_vector_width_int	1061	=item $uint = $device->native_vector_width_int
719		1062
720	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.	1063	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.
721		1064
722	=item $uint = $device->native_vector_width_long	1065	=item $uint = $device->native_vector_width_long
723		1066
724	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.	1067	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.
725		1068
726	=item $uint = $device->native_vector_width_float	1069	=item $uint = $device->native_vector_width_float
727		1070
728	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.	1071	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.
729		1072
730	=item $uint = $device->native_vector_width_double	1073	=item $uint = $device->native_vector_width_double
731		1074
732	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.	1075	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.
733		1076
734	=item $uint = $device->native_vector_width_half	1077	=item $uint = $device->native_vector_width_half
735		1078
736	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.	1079	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.
737		1080
738	=item $device_fp_config = $device->double_fp_config	1081	=item $device_fp_config = $device->double_fp_config
739		1082
740	Calls C<clGetDeviceInfo> with C<CL_DEVICE_DOUBLE_FP_CONFIG> and returns the result.	1083	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_DOUBLE_FP_CONFIG> and returns the result.
741		1084
742	=item $device_fp_config = $device->half_fp_config	1085	=item $device_fp_config = $device->half_fp_config
743		1086
744	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HALF_FP_CONFIG> and returns the result.	1087	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HALF_FP_CONFIG> and returns the result.
745		1088
746	=item $boolean = $device->host_unified_memory	1089	=item $boolean = $device->host_unified_memory
747		1090
748	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HOST_UNIFIED_MEMORY> and returns the result.	1091	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HOST_UNIFIED_MEMORY> and returns the result.
749		1092
750	=item $device = $device->parent_device_ext	1093	=item $device = $device->parent_device_ext
751		1094
752	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARENT_DEVICE_EXT> and returns the result.	1095	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARENT_DEVICE_EXT> and returns the result.
753		1096
754	=item @device_partition_property_exts = $device->partition_types_ext	1097	=item @device_partition_property_exts = $device->partition_types_ext
755		1098
756	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_TYPES_EXT> and returns the result.	1099	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_TYPES_EXT> and returns the result.
757		1100
758	=item @device_partition_property_exts = $device->affinity_domains_ext	1101	=item @device_partition_property_exts = $device->affinity_domains_ext
759		1102
760	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.	1103	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.
761		1104
762	=item $uint = $device->reference_count_ext	1105	=item $uint = $device->reference_count_ext
763		1106
764	Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT> and returns the result.	1107	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_REFERENCE_COUNT_EXT> and returns the result.
765		1108
766	=item @device_partition_property_exts = $device->partition_style_ext	1109	=item @device_partition_property_exts = $device->partition_style_ext
767		1110
768	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result.	1111	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_STYLE_EXT> and returns the result.
769		1112
770	=for gengetinfo end device	1113	=for gengetinfo end device
771		1114
772	=back	1115	=back
773		1116
774	=head2 THE OpenCL::Context CLASS	1117	=head2 THE OpenCL::Context CLASS
775		1118
		1119	An OpenCL::Context is basically a container, or manager, for a number of
		1120	devices of a platform. It is used to create all sorts of secondary objects
		1121	such as buffers, queues, programs and so on.
		1122
		1123	All context creation functions and methods take a list of properties
		1124	(type-value pairs). All property values can be specified as integers -
		1125	some additionally support other types:
		1126
776	=over 4	1127	=over 4
		1128
		1129	=item OpenCL::CONTEXT_PLATFORM
		1130
		1131	Also accepts OpenCL::Platform objects.
		1132
		1133	=item OpenCL::GLX_DISPLAY_KHR
		1134
		1135	Also accepts C<undef>, in which case a deep and troubling hack is engaged
		1136	to find the current glx display (see L<GLX SUPPORT>).
		1137
		1138	=item OpenCL::GL_CONTEXT_KHR
		1139
		1140	Also accepts C<undef>, in which case a deep and troubling hack is engaged
		1141	to find the current glx context (see L<GLX SUPPORT>).
		1142
		1143	=back
		1144
		1145	=over 4
		1146
		1147	=item $prog = $ctx->build_program ($program, $options = "")
		1148
		1149	This convenience function tries to build the program on all devices in
		1150	the context. If the build fails, then the function will C<croak> with the
		1151	build log. Otherwise ti returns the program object.
		1152
		1153	The C<$program> can either be a C<OpenCL::Program> object or a string
		1154	containing the program. In the latter case, a program objetc will be
		1155	created automatically.
		1156
		1157	=cut
		1158
		1159	sub OpenCL::Context::build_program {
		1160	my ($self, $prog, $options) = @_;
		1161
		1162	$prog = $self->program_with_source ($prog)
		1163	unless ref $prog;
		1164
		1165	eval { $prog->build (undef, $options); 1 }
		1166	or errno == BUILD_PROGRAM_FAILURE
		1167	or errno == INVALID_BINARY # workaround nvidia bug
		1168	or Carp::croak "OpenCL::Context->build_program: " . err2str;
		1169
		1170	# we check status for all devices
		1171	for my $dev ($self->devices) {
		1172	$prog->build_status ($dev) == BUILD_SUCCESS
		1173	or Carp::croak "Building OpenCL program for device '" . $dev->name . "' failed:\n"
		1174	. $prog->build_log ($dev);
		1175	}
		1176
		1177	$prog
		1178	}
777		1179
778	=item $queue = $ctx->queue ($device, $properties)	1180	=item $queue = $ctx->queue ($device, $properties)
779		1181
780	Create a new OpenCL::Queue object from the context and the given device.	1182	Create a new OpenCL::Queue object from the context and the given device.
781		1183
…		…
794	=item $buf = $ctx->buffer ($flags, $len)	1196	=item $buf = $ctx->buffer ($flags, $len)
795		1197
796	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the	1198	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the
797	given flags and octet-size.	1199	given flags and octet-size.
798		1200
		1201	flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_WRITE_ONLY, OpenCL::MEM_READ_ONLY,
		1202	OpenCL::MEM_USE_HOST_PTR, OpenCL::MEM_ALLOC_HOST_PTR, OpenCL::MEM_COPY_HOST_PTR,
		1203	OpenCL::MEM_HOST_WRITE_ONLY, OpenCL::MEM_HOST_READ_ONLY, OpenCL::MEM_HOST_NO_ACCESS.
		1204
799	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>	1205	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>
800		1206
801	=item $buf = $ctx->buffer_sv ($flags, $data)	1207	=item $buf = $ctx->buffer_sv ($flags, $data)
802		1208
803	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and	1209	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and
804	initialise it with the given data values.	1210	initialise it with the given data values.
805		1211
806	=item $img = $ctx->image ($self, $flags, $channel_order, $channel_type, $type, $width, $height, $depth, $array_size = 0, $row_pitch = 0, $slice_pitch = 0, $num_mip_level = 0, $num_samples = 0, $*data = &PL_sv_undef)	1212	=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)
807		1213
808	Creates a new OpenCL::Image object and optionally initialises it with	1214	Creates a new OpenCL::Image object and optionally initialises it with
809	the given data values.	1215	the given data values.
810		1216
		1217	channel_order: OpenCL::R, OpenCL::A, OpenCL::RG, OpenCL::RA, OpenCL::RGB,
		1218	OpenCL::RGBA, OpenCL::BGRA, OpenCL::ARGB, OpenCL::INTENSITY, OpenCL::LUMINANCE,
		1219	OpenCL::Rx, OpenCL::RGx, OpenCL::RGBx.
		1220
		1221	channel_type: OpenCL::SNORM_INT8, OpenCL::SNORM_INT16, OpenCL::UNORM_INT8,
		1222	OpenCL::UNORM_INT16, OpenCL::UNORM_SHORT_565, OpenCL::UNORM_SHORT_555,
		1223	OpenCL::UNORM_INT_101010, OpenCL::SIGNED_INT8, OpenCL::SIGNED_INT16,
		1224	OpenCL::SIGNED_INT32, OpenCL::UNSIGNED_INT8, OpenCL::UNSIGNED_INT16,
		1225	OpenCL::UNSIGNED_INT32, OpenCL::HALF_FLOAT, OpenCL::FLOAT.
		1226
		1227	type: OpenCL::MEM_OBJECT_BUFFER, OpenCL::MEM_OBJECT_IMAGE2D,
		1228	OpenCL::MEM_OBJECT_IMAGE3D, OpenCL::MEM_OBJECT_IMAGE2D_ARRAY,
		1229	OpenCL::MEM_OBJECT_IMAGE1D, OpenCL::MEM_OBJECT_IMAGE1D_ARRAY,
		1230	OpenCL::MEM_OBJECT_IMAGE1D_BUFFER.
		1231
811	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>	1232	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>
812		1233
813	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)	1234	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)
814		1235
815	Creates a new OpenCL::Image2D object and optionally initialises it with	1236	Creates a new OpenCL::Image2D object and optionally initialises it with
…		…
827	=item $buffer = $ctx->gl_buffer ($flags, $bufobj)	1248	=item $buffer = $ctx->gl_buffer ($flags, $bufobj)
828		1249
829	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given	1250	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given
830	OpenGL buffer object.	1251	OpenGL buffer object.
831		1252
		1253	flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_READ_ONLY, OpenCL::MEM_WRITE_ONLY.
		1254
832	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html	1255	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html
833		1256
834	=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)	1257	=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)
835		1258
836	Creates a new OpenCL::Image object that refers to the given OpenGL	1259	Creates a new OpenCL::Image object that refers to the given OpenGL
837	texture object or buffer.	1260	texture object or buffer.
838		1261
		1262	target: GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_BUFFER,
		1263	GL_TEXTURE_2D, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_3D,
		1264	GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
		1265	GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
		1266	GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
		1267	GL_TEXTURE_RECTANGLE/GL_TEXTURE_RECTANGLE_ARB.
		1268
839	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html	1269	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html
840		1270
841	=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)	1271	=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)
842		1272
843	Creates a new OpenCL::Image2D object that refers to the given OpenGL	1273	Creates a new OpenCL::Image2D object that refers to the given OpenGL
…		…
868		1298
869	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)	1299	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)
870		1300
871	Creates a new OpenCL::Sampler object.	1301	Creates a new OpenCL::Sampler object.
872		1302
		1303	addressing_mode: OpenCL::ADDRESS_NONE, OpenCL::ADDRESS_CLAMP_TO_EDGE,
		1304	OpenCL::ADDRESS_CLAMP, OpenCL::ADDRESS_REPEAT, OpenCL::ADDRESS_MIRRORED_REPEAT.
		1305
		1306	filter_mode: OpenCL::FILTER_NEAREST, OpenCL::FILTER_LINEAR.
		1307
873	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>	1308	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>
874		1309
875	=item $program = $ctx->program_with_source ($string)	1310	=item $program = $ctx->program_with_source ($string)
876		1311
877	Creates a new OpenCL::Program object from the given source code.	1312	Creates a new OpenCL::Program object from the given source code.
878		1313
879	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>	1314	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>
880		1315
		1316	=item ($program, \@status) = $ctx->program_with_binary (\@devices, \@binaries)
		1317
		1318	Creates a new OpenCL::Program object from the given binaries.
		1319
		1320	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithBinary.html>
		1321
		1322	Example: clone an existing program object that contains a successfully
		1323	compiled program, no matter how useless this is.
		1324
		1325	my $clone = $ctx->program_with_binary ([$prog->devices], [$prog->binaries]);
		1326
		1327	=item $program = $ctx->program_with_built_in_kernels (\@devices, $kernel_names)
		1328
		1329	Creates a new OpenCL::Program object from the given built-in kernel names.
		1330
		1331	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateProgramWithBuiltInKernels.html>
		1332
		1333	=item $program = $ctx->link_program (\@devices, $options, \@programs, $cb->($program) = undef)
		1334
		1335	Links all (already compiled) program objects specified in C<@programs>
		1336	together and returns a new OpenCL::Program object with the result.
		1337
		1338	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clLinkProgram.html>
		1339
881	=item $packed_value = $ctx->info ($name)	1340	=item $packed_value = $ctx->info ($name)
882		1341
883	See C<< $platform->info >> for details.	1342	See C<< $platform->info >> for details.
884		1343
885	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>	1344	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>
886		1345
887	=for gengetinfo begin context	1346	=for gengetinfo begin context
888		1347
889	=item $uint = $context->reference_count	1348	=item $uint = $context->reference_count
890		1349
891	Calls C<clGetContextInfo> with C<CL_CONTEXT_REFERENCE_COUNT> and returns the result.	1350	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_REFERENCE_COUNT> and returns the result.
892		1351
893	=item @devices = $context->devices	1352	=item @devices = $context->devices
894		1353
895	Calls C<clGetContextInfo> with C<CL_CONTEXT_DEVICES> and returns the result.	1354	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_DEVICES> and returns the result.
896		1355
897	=item @property_ints = $context->properties	1356	=item @property_ints = $context->properties
898		1357
899	Calls C<clGetContextInfo> with C<CL_CONTEXT_PROPERTIES> and returns the result.	1358	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_PROPERTIES> and returns the result.
900		1359
901	=item $uint = $context->num_devices	1360	=item $uint = $context->num_devices
902		1361
903	Calls C<clGetContextInfo> with C<CL_CONTEXT_NUM_DEVICES> and returns the result.	1362	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_NUM_DEVICES> and returns the result.
904		1363
905	=for gengetinfo end context	1364	=for gengetinfo end context
906		1365
907	=back	1366	=back
908		1367
909	=head2 THE OpenCL::Queue CLASS	1368	=head2 THE OpenCL::Queue CLASS
910		1369
911	An OpenCL::Queue represents an execution queue for OpenCL. You execute	1370	An OpenCL::Queue represents an execution queue for OpenCL. You execute
912	requests by calling their respective C<enqueue_xxx> method and waitinf for	1371	requests by calling their respective method and waiting for it to complete
913	it to complete in some way.	1372	in some way.
914		1373
915	All the enqueue methods return an event object that can be used to wait	1374	Most methods that enqueue some request return an event object that can
916	for completion, unless the method is called in void context, in which case	1375	be used to wait for completion (optionally using a callback), unless
917	no event object is created.	1376	the method is called in void context, in which case no event object is
		1377	created.
918		1378
919	They also allow you to specify any number of other event objects that this	1379	They also allow you to specify any number of other event objects that this
920	request has to wait for before it starts executing, by simply passing the	1380	request has to wait for before it starts executing, by simply passing the
921	event objects as extra parameters to the enqueue methods. To simplify	1381	event objects as extra parameters to the enqueue methods. To simplify
922	program design, this module ignores any C<undef> values in the list of	1382	program design, this module ignores any C<undef> values in the list of
923	events. This makes it possible to code operations such as this, without	1383	events. This makes it possible to code operations such as this, without
924	having to put a valid event object into C<$event> first:	1384	having to put a valid event object into C<$event> first:
925		1385
926	$event = $queue->enqueue_xxx (..., $event);	1386	$event = $queue->xxx (..., $event);
927		1387
928	Queues execute in-order by default, without any parallelism, so in most	1388	Queues execute in-order by default, without any parallelism, so in most
929	cases (i.e. you use only one queue) it's not necessary to wait for or	1389	cases (i.e. you use only one queue) it's not necessary to wait for or
930	create event objects, althoguh an our of order queue is often a bit	1390	create event objects, althoguh an our of order queue is often a bit
931	faster.	1391	faster.
932		1392
933	=over 4	1393	=over 4
934		1394
935	=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)	1395	=item $ev = $queue->read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)
936		1396
937	Reads data from buffer into the given string.	1397	Reads data from buffer into the given string.
938		1398
939	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>	1399	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>
940		1400
941	=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)	1401	=item $ev = $queue->write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)
942		1402
943	Writes data to buffer from the given string.	1403	Writes data to buffer from the given string.
944		1404
945	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>	1405	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>
946		1406
947	=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)	1407	=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)
948		1408
949	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>	1409	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>
950		1410
951	=item $ev = $queue->enqueue_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...)	1411	=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...)
952		1412
953	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html	1413	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html
954		1414
955	=item $ev = $queue->enqueue_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...)	1415	=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...)
956		1416
957	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html	1417	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html
958		1418
959	=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
960
961	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>
962
963	=item $ev = $queue->enqueue_copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)	1419	=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
		1420
		1421	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>
		1422
		1423	=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
		1424
		1425	C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL
		1426	module uses the image width (and height) to supply default values.
964		1427
965	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>	1428	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>
966		1429
967	=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1430	=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
968		1431
		1432	C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL
		1433	module uses the image width (and height) to supply default values.
969	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>	1434	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>
970		1435
971	=item $ev = $queue->enqueue_copy_image ($src_image, $dst_image, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)	1436	=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...)
972		1437
973	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>	1438	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>
974		1439
975	=item $ev = $queue->enqueue_copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...)	1440	=item $ev = $queue->copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...)
976		1441
977	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>	1442	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>
978		1443
979	=item $ev = $queue->enqueue_copy_buffer_rect ($src, $dst, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $src_row_pitch, $src_slice_pitch, $dst_row_pitch, $dst_slice_pitch, $wait_event...)	1444	=item $ev = $queue->copy_buffer_rect ($src, $dst, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $src_row_pitch, $src_slice_pitch, $dst_row_pitch, $dst_slice_pitch, $wait_event...)
980		1445
981	Yeah.	1446	Yeah.
982		1447
983	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.	1448	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.
984		1449
		1450	=item $ev = $queue->fill_buffer ($mem, $pattern, $offset, $size, ...)
		1451
		1452	Fills the given buffer object with repeated applications of C<$pattern>,
		1453	starting at C<$offset> for C<$size> octets.
		1454
		1455	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillBuffer.html>
		1456
		1457	=item $ev = $queue->fill_image ($img, $r, $g, $b, $a, $x, $y, $z, $width, $height, $depth, ...)
		1458
		1459	Fills the given image area with the given rgba colour components. The
		1460	components are normally floating point values between C<0> and C<1>,
		1461	except when the image channel data type is a signe dor unsigned
		1462	unnormalised format, in which case the range is determined by the format.
		1463
		1464	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillImage.html>
		1465
985	=item $ev = $queue->enqueue_task ($kernel, $wait_events...)	1466	=item $ev = $queue->task ($kernel, $wait_events...)
986		1467
987	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>	1468	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>
988		1469
989	=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...)	1470	=item $ev = $queue->nd_range_kernel ($kernel, \@global_work_offset, \@global_work_size, \@local_work_size, $wait_events...)
990		1471
991	Enqueues a kernel execution.	1472	Enqueues a kernel execution.
992		1473
993	@$global_work_size must be specified as a reference to an array of	1474	\@global_work_size must be specified as a reference to an array of
994	integers specifying the work sizes (element counts).	1475	integers specifying the work sizes (element counts).
995		1476
996	@$global_work_offset must be either C<undef> (in which case all offsets	1477	\@global_work_offset must be either C<undef> (in which case all offsets
997	are C<0>), or a reference to an array of work offsets, with the same number	1478	are C<0>), or a reference to an array of work offsets, with the same number
998	of elements as @$global_work_size.	1479	of elements as \@global_work_size.
999		1480
1000	@$local_work_size must be either C<undef> (in which case the	1481	\@local_work_size must be either C<undef> (in which case the
1001	implementation is supposed to choose good local work sizes), or a	1482	implementation is supposed to choose good local work sizes), or a
1002	reference to an array of local work sizes, with the same number of	1483	reference to an array of local work sizes, with the same number of
1003	elements as @$global_work_size.	1484	elements as \@global_work_size.
1004		1485
1005	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>	1486	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
1006		1487
		1488	=item $ev = $queue->migrate_mem_objects (\@mem_objects, $flags, $wait_events...)
		1489
		1490	Migrates a number of OpenCL::Memory objects to or from the device.
		1491
		1492	flags: OpenCL::MIGRATE_MEM_OBJECT_HOST, OpenCL::MIGRATE_MEM_OBJECT_CONTENT_UNDEFINED
		1493
		1494	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMigrateMemObjects.html>
		1495
1007	=item $ev = $queue->enqueue_acquire_gl_objects ([object, ...], $wait_events...)	1496	=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)
1008		1497
1009	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired	1498	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired
1010	for subsequent OpenCL usage.	1499	for subsequent OpenCL usage.
1011		1500
1012	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>	1501	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>
1013		1502
1014	=item $ev = $queue->enqueue_release_gl_objects ([object, ...], $wait_events...)	1503	=item $ev = $queue->release_gl_objects ([object, ...], $wait_events...)
1015		1504
1016	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released	1505	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released
1017	for subsequent OpenGL usage.	1506	for subsequent OpenGL usage.
1018		1507
1019	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>	1508	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>
1020		1509
1021	=item $ev = $queue->enqueue_wait_for_events ($wait_events...)	1510	=item $ev = $queue->wait_for_events ($wait_events...)
1022		1511
1023	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>	1512	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>
1024		1513
1025	=item $ev = $queue->enqueue_marker ($wait_events...)	1514	=item $ev = $queue->marker ($wait_events...)
1026		1515
1027	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html>	1516	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html>
1028		1517
1029	=item $ev = $queue->enqueue_barrier ($wait_events...)	1518	=item $ev = $queue->barrier ($wait_events...)
1030		1519
1031	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html>	1520	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html>
1032		1521
1033	=item $queue->flush	1522	=item $queue->flush
1034		1523
…		…
1046		1535
1047	=for gengetinfo begin command_queue	1536	=for gengetinfo begin command_queue
1048		1537
1049	=item $ctx = $command_queue->context	1538	=item $ctx = $command_queue->context
1050		1539
1051	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_CONTEXT> and returns the result.	1540	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_CONTEXT> and returns the result.
1052		1541
1053	=item $device = $command_queue->device	1542	=item $device = $command_queue->device
1054		1543
1055	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_DEVICE> and returns the result.	1544	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_DEVICE> and returns the result.
1056		1545
1057	=item $uint = $command_queue->reference_count	1546	=item $uint = $command_queue->reference_count
1058		1547
1059	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_REFERENCE_COUNT> and returns the result.	1548	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_REFERENCE_COUNT> and returns the result.
1060		1549
1061	=item $command_queue_properties = $command_queue->properties	1550	=item $command_queue_properties = $command_queue->properties
1062		1551
1063	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_PROPERTIES> and returns the result.	1552	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_PROPERTIES> and returns the result.
1064		1553
1065	=for gengetinfo end command_queue	1554	=for gengetinfo end command_queue
		1555
		1556	=back
		1557
		1558	=head3 MEMORY MAPPED BUFFERS
		1559
		1560	OpenCL allows you to map buffers and images to host memory (read: perl
		1561	scalars). This is done much like reading or copying a buffer, by enqueuing
		1562	a map or unmap operation on the command queue.
		1563
		1564	The map operations return an C<OpenCL::Mapped> object - see L<THE
		1565	OpenCL::Mapped CLASS> section for details on what to do with these
		1566	objects.
		1567
		1568	The object will be unmapped automatically when the mapped object is
		1569	destroyed (you can use a barrier to make sure the unmap has finished,
		1570	before using the buffer in a kernel), but you can also enqueue an unmap
		1571	operation manually.
		1572
		1573	=over 4
		1574
		1575	=item $mapped_buffer = $queue->map_buffer ($buf, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $offset=0, $size=undef, $wait_events...)
		1576
		1577	Maps the given buffer into host memory and returns an
		1578	C<OpenCL::MappedBuffer> object. If C<$size> is specified as undef, then
		1579	the map will extend to the end of the buffer.
		1580
		1581	map_flags: OpenCL::MAP_READ, OpenCL::MAP_WRITE, OpenCL::MAP_WRITE_INVALIDATE_REGION.
		1582
		1583	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapBuffer.html>
		1584
		1585	Example: map the buffer $buf fully and replace the first 4 bytes by "abcd", then unmap.
		1586
		1587	{
		1588	my $mapped = $queue->map_buffer ($buf, 1, OpenCL::MAP_WRITE);
		1589	substr $$mapped, 0, 4, "abcd";
		1590	} # asynchronously unmap because $mapped is destroyed
		1591
		1592	=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...)
		1593
		1594	Maps the given image area into host memory and return an
		1595	C<OpenCL::MappedImage> object.
		1596
		1597	If any of C<$width>, C<$height> and/or C<$depth> are C<undef> then they
		1598	will be replaced by the maximum possible value.
		1599
		1600	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapImage.html>
		1601
		1602	Example: map an image (with OpenCL::UNSIGNED_INT8 channel type) and set
		1603	the first channel of the leftmost column to 5, then explicitly unmap
		1604	it. You are not necessarily meant to do it this way, this example just
		1605	shows you the accessors to use :)
		1606
		1607	my $mapped = $queue->map_image ($image, 1, OpenCL::MAP_WRITE);
		1608
		1609	$mapped->set ($_ * $mapped->row_pitch, pack "C", 5)
		1610	for 0..$image->height;
		1611
		1612	$mapped->unmap;.
		1613	$mapped->wait; # only needed for out of order queues normally
		1614
		1615	=item $ev = $queue->unmap ($mapped, $wait_events...)
		1616
		1617	Unmaps the data from host memory. You must not call any methods that
		1618	modify the data, or modify the data scalar directly, after calling this
		1619	method.
		1620
		1621	The mapped event object will always be passed as part of the
		1622	$wait_events. The mapped event object will be replaced by the new event
		1623	object that this request creates.
1066		1624
1067	=back	1625	=back
1068		1626
1069	=head2 THE OpenCL::Memory CLASS	1627	=head2 THE OpenCL::Memory CLASS
1070		1628
…		…
1081		1639
1082	=for gengetinfo begin mem	1640	=for gengetinfo begin mem
1083		1641
1084	=item $mem_object_type = $mem->type	1642	=item $mem_object_type = $mem->type
1085		1643
1086	Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result.	1644	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_TYPE> and returns the result.
1087		1645
1088	=item $mem_flags = $mem->flags	1646	=item $mem_flags = $mem->flags
1089		1647
1090	Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result.	1648	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_FLAGS> and returns the result.
1091		1649
1092	=item $int = $mem->size	1650	=item $int = $mem->size
1093		1651
1094	Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result.	1652	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_SIZE> and returns the result.
1095		1653
1096	=item $ptr_value = $mem->host_ptr	1654	=item $ptr_value = $mem->host_ptr
1097		1655
1098	Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result.	1656	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_HOST_PTR> and returns the result.
1099		1657
1100	=item $uint = $mem->map_count	1658	=item $uint = $mem->map_count
1101		1659
1102	Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result.	1660	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_MAP_COUNT> and returns the result.
1103		1661
1104	=item $uint = $mem->reference_count	1662	=item $uint = $mem->reference_count
1105		1663
1106	Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result.	1664	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_REFERENCE_COUNT> and returns the result.
1107		1665
1108	=item $ctx = $mem->context	1666	=item $ctx = $mem->context
1109		1667
1110	Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result.	1668	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_CONTEXT> and returns the result.
1111		1669
1112	=item $mem = $mem->associated_memobject	1670	=item $mem = $mem->associated_memobject
1113		1671
1114	Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result.	1672	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_ASSOCIATED_MEMOBJECT> and returns the result.
1115		1673
1116	=item $int = $mem->offset	1674	=item $int = $mem->offset
1117		1675
1118	Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result.	1676	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_OFFSET> and returns the result.
1119		1677
1120	=for gengetinfo end mem	1678	=for gengetinfo end mem
1121		1679
1122	=item ($type, $name) = $mem->gl_object_info	1680	=item ($type, $name) = $mem->gl_object_info
1123		1681
…		…
1157	OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D,	1715	OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D,
1158	OpenCL::Image2DArray and OpenCL::Image3D.	1716	OpenCL::Image2DArray and OpenCL::Image3D.
1159		1717
1160	=over 4	1718	=over 4
1161		1719
1162	=item $packed_value = $ev->image_info ($name)	1720	=item $packed_value = $image->image_info ($name)
1163		1721
1164	See C<< $platform->info >> for details.	1722	See C<< $platform->info >> for details.
1165		1723
1166	The reason this method is not called C<info> is that there already is an	1724	The reason this method is not called C<info> is that there already is an
1167	C<< ->info >> method inherited from C<OpenCL::Memory>.	1725	C<< ->info >> method inherited from C<OpenCL::Memory>.
1168		1726
1169	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>	1727	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
1170		1728
		1729	=item ($channel_order, $channel_data_type) = $image->format
		1730
		1731	Returns the channel order and type used to create the image by calling
		1732	C<clGetImageInfo> with C<CL_IMAGE_FORMAT>.
		1733
1171	=for gengetinfo begin image	1734	=for gengetinfo begin image
1172		1735
1173	=item $int = $image->element_size	1736	=item $int = $image->element_size
1174		1737
1175	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.	1738	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ELEMENT_SIZE> and returns the result.
1176		1739
1177	=item $int = $image->row_pitch	1740	=item $int = $image->row_pitch
1178		1741
1179	Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result.	1742	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ROW_PITCH> and returns the result.
1180		1743
1181	=item $int = $image->slice_pitch	1744	=item $int = $image->slice_pitch
1182		1745
1183	Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result.	1746	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_SLICE_PITCH> and returns the result.
1184		1747
1185	=item $int = $image->width	1748	=item $int = $image->width
1186		1749
1187	Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result.	1750	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_WIDTH> and returns the result.
1188		1751
1189	=item $int = $image->height	1752	=item $int = $image->height
1190		1753
1191	Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result.	1754	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_HEIGHT> and returns the result.
1192		1755
1193	=item $int = $image->depth	1756	=item $int = $image->depth
1194		1757
1195	Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result.	1758	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_DEPTH> and returns the result.
1196		1759
1197	=for gengetinfo end image	1760	=for gengetinfo end image
1198		1761
1199	=for gengetinfo begin gl_texture	1762	=for gengetinfo begin gl_texture
1200		1763
1201	=item $GLenum = $gl_texture->target	1764	=item $GLenum = $gl_texture->target
1202		1765
1203	Calls C<clGetGLTextureInfo> with C<CL_GL_TEXTURE_TARGET> and returns the result.	1766	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_TEXTURE_TARGET> and returns the result.
1204		1767
1205	=item $GLint = $gl_texture->gl_mipmap_level	1768	=item $GLint = $gl_texture->gl_mipmap_level
1206		1769
1207	Calls C<clGetGLTextureInfo> with C<CL_GL_MIPMAP_LEVEL> and returns the result.	1770	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_MIPMAP_LEVEL> and returns the result.
1208		1771
1209	=for gengetinfo end gl_texture	1772	=for gengetinfo end gl_texture
1210		1773
1211	=back	1774	=back
1212		1775
…		…
1222		1785
1223	=for gengetinfo begin sampler	1786	=for gengetinfo begin sampler
1224		1787
1225	=item $uint = $sampler->reference_count	1788	=item $uint = $sampler->reference_count
1226		1789
1227	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result.	1790	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_REFERENCE_COUNT> and returns the result.
1228		1791
1229	=item $ctx = $sampler->context	1792	=item $ctx = $sampler->context
1230		1793
1231	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result.	1794	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_CONTEXT> and returns the result.
1232		1795
1233	=item $addressing_mode = $sampler->normalized_coords	1796	=item $addressing_mode = $sampler->normalized_coords
1234		1797
1235	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result.	1798	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_NORMALIZED_COORDS> and returns the result.
1236		1799
1237	=item $filter_mode = $sampler->addressing_mode	1800	=item $filter_mode = $sampler->addressing_mode
1238		1801
1239	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result.	1802	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_ADDRESSING_MODE> and returns the result.
1240		1803
1241	=item $boolean = $sampler->filter_mode	1804	=item $boolean = $sampler->filter_mode
1242		1805
1243	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result.	1806	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_FILTER_MODE> and returns the result.
1244		1807
1245	=for gengetinfo end sampler	1808	=for gengetinfo end sampler
1246		1809
1247	=back	1810	=back
1248		1811
1249	=head2 THE OpenCL::Program CLASS	1812	=head2 THE OpenCL::Program CLASS
1250		1813
1251	=over 4	1814	=over 4
1252		1815
1253	=item $program->build ($device, $options = "")	1816	=item $program->build (\@devices = undef, $options = "", $cb->($program) = undef)
1254		1817
1255	Tries to build the program with the givne options.	1818	Tries to build the program with the given options. See also the
		1819	C<$ctx->build> convenience function.
		1820
		1821	If a callback is specified, then it will be called when compilation is
		1822	finished. Note that many OpenCL implementations block your program while
		1823	compiling whether you use a callback or not. See C<build_async> if you
		1824	want to make sure the build is done in the background.
		1825
		1826	Note that some OpenCL implementations act up badly, and don't call the
		1827	callback in some error cases (but call it in others). This implementation
		1828	assumes the callback will always be called, and leaks memory if this is
		1829	not so. So best make sure you don't pass in invalid values.
		1830
		1831	Some implementations fail with C<OpenCL::INVALID_BINARY> when the
		1832	compilation state is successful but some later stage fails.
		1833
		1834	options: C<-D name>, C<-D name=definition>, C<-I dir>,
		1835	C<-cl-single-precision-constant>, C<-cl-denorms-are-zero>,
		1836	C<-cl-fp32-correctly-rounded-divide-sqrt>, C<-cl-opt-disable>,
		1837	C<-cl-mad-enable>, C<-cl-no-signed-zeros>, C<-cl-unsafe-math-optimizations>,
		1838	C<-cl-finite-math-only>, C<-cl-fast-relaxed-math>,
		1839	C<-w>, C<-Werror>, C<-cl-std=CL1.1/CL1.2>, C<-cl-kernel-arg-info>,
		1840	C<-create-library>, C<-enable-link-options>.
		1841
		1842	build_status: OpenCL::BUILD_SUCCESS, OpenCL::BUILD_NONE,
		1843	OpenCL::BUILD_ERROR, OpenCL::BUILD_IN_PROGRESS.
1256		1844
1257	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>	1845	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
		1846
		1847	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
		1848
		1849	Similar to C<< ->build >>, except it starts a thread, and never fails (you
		1850	need to check the compilation status form the callback, or by polling).
		1851
		1852	=item $program->compile (\@devices = undef, $options = "", \%headers = undef, $cb->($program) = undef)
		1853
		1854	Compiles the given program for the given devices (or all devices if
		1855	undef). If C<$headers> is given, it must be a hashref with include name =>
		1856	OpenCL::Program pairs.
		1857
		1858	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCompileProgram.html>
1258		1859
1259	=item $packed_value = $program->build_info ($device, $name)	1860	=item $packed_value = $program->build_info ($device, $name)
1260		1861
1261	Similar to C<< $platform->info >>, but returns build info for a previous	1862	Similar to C<< $platform->info >>, but returns build info for a previous
1262	build attempt for the given device.	1863	build attempt for the given device.
1263		1864
		1865	binary_type: OpenCL::PROGRAM_BINARY_TYPE_NONE,
		1866	OpenCL::PROGRAM_BINARY_TYPE_COMPILED_OBJECT,
		1867	OpenCL::PROGRAM_BINARY_TYPE_LIBRARY,
		1868	OpenCL::PROGRAM_BINARY_TYPE_EXECUTABLE.
		1869
1264	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>	1870	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>
1265		1871
1266	=item $kernel = $program->kernel ($function_name)	1872	=item $kernel = $program->kernel ($function_name)
1267		1873
1268	Creates an OpenCL::Kernel object out of the named C<__kernel> function in	1874	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
…		…
1278		1884
1279	=for gengetinfo begin program_build	1885	=for gengetinfo begin program_build
1280		1886
1281	=item $build_status = $program->build_status ($device)	1887	=item $build_status = $program->build_status ($device)
1282		1888
1283	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result.	1889	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_STATUS> and returns the result.
1284		1890
1285	=item $string = $program->build_options ($device)	1891	=item $string = $program->build_options ($device)
1286		1892
1287	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result.	1893	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_OPTIONS> and returns the result.
1288		1894
1289	=item $string = $program->build_log ($device)	1895	=item $string = $program->build_log ($device)
1290		1896
1291	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result.	1897	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_LOG> and returns the result.
1292		1898
1293	=for gengetinfo end program_build	1899	=for gengetinfo end program_build
1294		1900
1295	=item $packed_value = $program->info ($name)	1901	=item $packed_value = $program->info ($name)
1296		1902
…		…
1300		1906
1301	=for gengetinfo begin program	1907	=for gengetinfo begin program
1302		1908
1303	=item $uint = $program->reference_count	1909	=item $uint = $program->reference_count
1304		1910
1305	Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result.	1911	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_REFERENCE_COUNT> and returns the result.
1306		1912
1307	=item $ctx = $program->context	1913	=item $ctx = $program->context
1308		1914
1309	Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result.	1915	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_CONTEXT> and returns the result.
1310		1916
1311	=item $uint = $program->num_devices	1917	=item $uint = $program->num_devices
1312		1918
1313	Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result.	1919	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_NUM_DEVICES> and returns the result.
1314		1920
1315	=item @devices = $program->devices	1921	=item @devices = $program->devices
1316		1922
1317	Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result.	1923	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_DEVICES> and returns the result.
1318		1924
1319	=item $string = $program->source	1925	=item $string = $program->source
1320		1926
1321	Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result.	1927	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_SOURCE> and returns the result.
1322		1928
1323	=item @ints = $program->binary_sizes	1929	=item @ints = $program->binary_sizes
1324		1930
1325	Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result.	1931	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_BINARY_SIZES> and returns the result.
1326		1932
1327	=for gengetinfo end program	1933	=for gengetinfo end program
1328		1934
1329	=item @blobs = $program->binaries	1935	=item @blobs = $program->binaries
1330		1936
…		…
1351		1957
1352	=for gengetinfo begin kernel	1958	=for gengetinfo begin kernel
1353		1959
1354	=item $string = $kernel->function_name	1960	=item $string = $kernel->function_name
1355		1961
1356	Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result.	1962	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_FUNCTION_NAME> and returns the result.
1357		1963
1358	=item $uint = $kernel->num_args	1964	=item $uint = $kernel->num_args
1359		1965
1360	Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result.	1966	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_NUM_ARGS> and returns the result.
1361		1967
1362	=item $uint = $kernel->reference_count	1968	=item $uint = $kernel->reference_count
1363		1969
1364	Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result.	1970	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_REFERENCE_COUNT> and returns the result.
1365		1971
1366	=item $ctx = $kernel->context	1972	=item $ctx = $kernel->context
1367		1973
1368	Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result.	1974	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_CONTEXT> and returns the result.
1369		1975
1370	=item $program = $kernel->program	1976	=item $program = $kernel->program
1371		1977
1372	Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result.	1978	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_PROGRAM> and returns the result.
1373		1979
1374	=for gengetinfo end kernel	1980	=for gengetinfo end kernel
1375		1981
1376	=item $packed_value = $kernel->work_group_info ($device, $name)	1982	=item $packed_value = $kernel->work_group_info ($device, $name)
1377		1983
1378	See C<< $platform->info >> for details.	1984	See C<< $platform->info >> for details.
1379		1985
1380	The reason this method is not called C<info> is that there already is an
1381	C<< ->info >> method.
1382
1383	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>	1986	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
1384		1987
1385	=for gengetinfo begin kernel_work_group	1988	=for gengetinfo begin kernel_work_group
1386		1989
1387	=item $int = $kernel->work_group_size ($device)	1990	=item $int = $kernel->work_group_size ($device)
1388		1991
1389	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result.	1992	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_WORK_GROUP_SIZE> and returns the result.
1390		1993
1391	=item @ints = $kernel->compile_work_group_size ($device)	1994	=item @ints = $kernel->compile_work_group_size ($device)
1392		1995
1393	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.	1996	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.
1394		1997
1395	=item $ulong = $kernel->local_mem_size ($device)	1998	=item $ulong = $kernel->local_mem_size ($device)
1396		1999
1397	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result.	2000	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_LOCAL_MEM_SIZE> and returns the result.
1398		2001
1399	=item $int = $kernel->preferred_work_group_size_multiple ($device)	2002	=item $int = $kernel->preferred_work_group_size_multiple ($device)
1400		2003
1401	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.	2004	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.
1402		2005
1403	=item $ulong = $kernel->private_mem_size ($device)	2006	=item $ulong = $kernel->private_mem_size ($device)
1404		2007
1405	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.	2008	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PRIVATE_MEM_SIZE> and returns the result.
1406		2009
1407	=for gengetinfo end kernel_work_group	2010	=for gengetinfo end kernel_work_group
1408		2011
		2012	=item $packed_value = $kernel->arg_info ($idx, $name)
		2013
		2014	See C<< $platform->info >> for details.
		2015
		2016	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clGetKernelArgInfo.html>
		2017
		2018	=for gengetinfo begin kernel_arg
		2019
		2020	=item $kernel_arg_address_qualifier = $kernel->arg_address_qualifier ($idx)
		2021
		2022	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ADDRESS_QUALIFIER> and returns the result.
		2023
		2024	=item $kernel_arg_access_qualifier = $kernel->arg_access_qualifier ($idx)
		2025
		2026	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ACCESS_QUALIFIER> and returns the result.
		2027
		2028	=item $string = $kernel->arg_type_name ($idx)
		2029
		2030	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_NAME> and returns the result.
		2031
		2032	=item $kernel_arg_type_qualifier = $kernel->arg_type_qualifier ($idx)
		2033
		2034	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_QUALIFIER> and returns the result.
		2035
		2036	=item $string = $kernel->arg_name ($idx)
		2037
		2038	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_NAME> and returns the result.
		2039
		2040	=for gengetinfo end kernel_arg
		2041
		2042	=item $kernel->setf ($format, ...)
		2043
		2044	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
		2045	way to set arguments (and with OpenCL 1.2 it might be rather slow), you
		2046	need to specify a format argument, much as with C<printf>, to tell OpenCL
		2047	what type of argument it is.
		2048
		2049	The format arguments are single letters:
		2050
		2051	c char
		2052	C unsigned char
		2053	s short
		2054	S unsigned short
		2055	i int
		2056	I unsigned int
		2057	l long
		2058	L unsigned long
		2059
		2060	h half float (0..65535)
		2061	f float
		2062	d double
		2063
		2064	z local (octet size)
		2065
		2066	m memory object (buffer or image)
		2067	a sampler
		2068	e event
		2069
		2070	Space characters in the format string are ignored.
		2071
		2072	Example: set the arguments for a kernel that expects an int, two floats, a buffer and an image.
		2073
		2074	$kernel->setf ("i ff mm", 5, 0.5, 3, $buffer, $image);
		2075
1409	=item $kernel->set_TYPE ($index, $value)	2076	=item $kernel->set_TYPE ($index, $value)
1410		2077
		2078	=item $kernel->set_char ($index, $value)
		2079
		2080	=item $kernel->set_uchar ($index, $value)
		2081
		2082	=item $kernel->set_short ($index, $value)
		2083
		2084	=item $kernel->set_ushort ($index, $value)
		2085
		2086	=item $kernel->set_int ($index, $value)
		2087
		2088	=item $kernel->set_uint ($index, $value)
		2089
		2090	=item $kernel->set_long ($index, $value)
		2091
		2092	=item $kernel->set_ulong ($index, $value)
		2093
		2094	=item $kernel->set_half ($index, $value)
		2095
		2096	=item $kernel->set_float ($index, $value)
		2097
		2098	=item $kernel->set_double ($index, $value)
		2099
		2100	=item $kernel->set_memory ($index, $value)
		2101
		2102	=item $kernel->set_buffer ($index, $value)
		2103
		2104	=item $kernel->set_image ($index, $value)
		2105
		2106	=item $kernel->set_sampler ($index, $value)
		2107
		2108	=item $kernel->set_local ($index, $value)
		2109
		2110	=item $kernel->set_event ($index, $value)
		2111
1411	This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>.	2112	This is a family of methods to set the kernel argument with the number
1412		2113	C<$index> to the give C<$value>.
1413	TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>,
1414	C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>,
1415	C<image2d>, C<image3d>, C<sampler>, C<local> or C<event>.
1416		2114
1417	Chars and integers (including the half type) are specified as integers,	2115	Chars and integers (including the half type) are specified as integers,
1418	float and double as floating point values, memory/buffer/image2d/image3d	2116	float and double as floating point values, memory/buffer/image must be
1419	must be an object of that type or C<undef>, local-memory arguments are	2117	an object of that type or C<undef>, local-memory arguments are set by
1420	set by specifying the size, and sampler and event must be objects of that	2118	specifying the size, and sampler and event must be objects of that type.
1421	type.	2119
		2120	Note that C<set_memory> works for all memory objects (all types of buffers
		2121	and images) - the main purpose of the more specific C<set_TYPE> functions
		2122	is type checking.
1422		2123
1423	Setting an argument for a kernel does NOT keep a reference to the object -	2124	Setting an argument for a kernel does NOT keep a reference to the object -
1424	for example, if you set an argument to some image object, free the image,	2125	for example, if you set an argument to some image object, free the image,
1425	and call the kernel, you will run into undefined behaviour.	2126	and call the kernel, you will run into undefined behaviour.
1426		2127
…		…
1439		2140
1440	Waits for the event to complete.	2141	Waits for the event to complete.
1441		2142
1442	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	2143	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
1443		2144
		2145	=item $ev->cb ($exec_callback_type, $callback->($event, $event_command_exec_status))
		2146
		2147	Adds a callback to the callback stack for the given event type. There is
		2148	no way to remove a callback again.
		2149
		2150	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html>
		2151
1444	=item $packed_value = $ev->info ($name)	2152	=item $packed_value = $ev->info ($name)
1445		2153
1446	See C<< $platform->info >> for details.	2154	See C<< $platform->info >> for details.
1447		2155
1448	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>	2156	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>
1449		2157
1450	=for gengetinfo begin event	2158	=for gengetinfo begin event
1451		2159
1452	=item $queue = $event->command_queue	2160	=item $queue = $event->command_queue
1453		2161
1454	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result.	2162	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_QUEUE> and returns the result.
1455		2163
1456	=item $command_type = $event->command_type	2164	=item $command_type = $event->command_type
1457		2165
1458	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result.	2166	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_TYPE> and returns the result.
1459		2167
1460	=item $uint = $event->reference_count	2168	=item $uint = $event->reference_count
1461		2169
1462	Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result.	2170	Calls C<clGetEventInfo> with C<OpenCL::EVENT_REFERENCE_COUNT> and returns the result.
1463		2171
1464	=item $uint = $event->command_execution_status	2172	=item $uint = $event->command_execution_status
1465		2173
1466	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result.	2174	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_EXECUTION_STATUS> and returns the result.
1467		2175
1468	=item $ctx = $event->context	2176	=item $ctx = $event->context
1469		2177
1470	Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result.	2178	Calls C<clGetEventInfo> with C<OpenCL::EVENT_CONTEXT> and returns the result.
1471		2179
1472	=for gengetinfo end event	2180	=for gengetinfo end event
1473		2181
1474	=item $packed_value = $ev->profiling_info ($name)	2182	=item $packed_value = $ev->profiling_info ($name)
1475		2183
…		…
1482		2190
1483	=for gengetinfo begin profiling	2191	=for gengetinfo begin profiling
1484		2192
1485	=item $ulong = $event->profiling_command_queued	2193	=item $ulong = $event->profiling_command_queued
1486		2194
1487	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result.	2195	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_QUEUED> and returns the result.
1488		2196
1489	=item $ulong = $event->profiling_command_submit	2197	=item $ulong = $event->profiling_command_submit
1490		2198
1491	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result.	2199	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_SUBMIT> and returns the result.
1492		2200
1493	=item $ulong = $event->profiling_command_start	2201	=item $ulong = $event->profiling_command_start
1494		2202
1495	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result.	2203	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_START> and returns the result.
1496		2204
1497	=item $ulong = $event->profiling_command_end	2205	=item $ulong = $event->profiling_command_end
1498		2206
1499	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result.	2207	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_END> and returns the result.
1500		2208
1501	=for gengetinfo end profiling	2209	=for gengetinfo end profiling
1502		2210
1503	=back	2211	=back
1504		2212
…		…
1508		2216
1509	=over 4	2217	=over 4
1510		2218
1511	=item $ev->set_status ($execution_status)	2219	=item $ev->set_status ($execution_status)
1512		2220
		2221	Sets the execution status of the user event. Can only be called once,
		2222	either with OpenCL::COMPLETE or a negative number as status.
		2223
		2224	execution_status: OpenCL::COMPLETE or a negative integer.
		2225
1513	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>	2226	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1514		2227
1515	=back	2228	=back
1516		2229
		2230	=head2 THE OpenCL::Mapped CLASS
		2231
		2232	This class represents objects mapped into host memory. They are
		2233	represented by a blessed string scalar. The string data is the mapped
		2234	memory area, that is, if you read or write it, then the mapped object is
		2235	accessed directly.
		2236
		2237	You must only ever use operations that modify the string in-place - for
		2238	example, a C<substr> that doesn't change the length, or maybe a regex that
		2239	doesn't change the length. Any other operation might cause the data to be
		2240	copied.
		2241
		2242	When the object is destroyed it will enqueue an implicit unmap operation
		2243	on the queue that was used to create it.
		2244
		2245	Keep in mind that you I<need> to unmap (or destroy) mapped objects before
		2246	OpenCL sees the changes, even if some implementations don't need this
		2247	sometimes.
		2248
		2249	Example, replace the first two floats in the mapped buffer by 1 and 2.
		2250
		2251	my $mapped = $queue->map_buffer ($buf, ...
		2252	$mapped->event->wait; # make sure it's there
		2253
		2254	# now replace first 8 bytes by new data, which is exactly 8 bytes long
		2255	# we blindly assume device endianness to equal host endianness
		2256	# (and of course, we assume iee 754 single precision floats :)
		2257	substr $$mapped, 0, 8, pack "f*", 1, 2;
		2258
		2259	=over 4
		2260
		2261	=item $ev = $mapped->unmap ($wait_events...)
		2262
		2263	Unmaps the mapped memory object, using the queue originally used to create
		2264	it, quite similarly to C<< $queue->unmap ($mapped, ...) >>.
		2265
		2266	=item $bool = $mapped->mapped
		2267
		2268	Returns whether the object is still mapped - true before an C<unmap> is
		2269	enqueued, false afterwards.
		2270
		2271	=item $ev = $mapped->event
		2272
		2273	Return the event object associated with the mapped object. Initially, this
		2274	will be the event object created when mapping the object, and after an
		2275	unmap, this will be the event object that the unmap operation created.
		2276
		2277	=item $mapped->wait
		2278
		2279	Same as C<< $mapped->event->wait >> - makes sure no operations on this
		2280	mapped object are outstanding.
		2281
		2282	=item $bytes = $mapped->size
		2283
		2284	Returns the size of the mapped area, in bytes. Same as C<length $$mapped>.
		2285
		2286	=item $ptr = $mapped->ptr
		2287
		2288	Returns the raw memory address of the mapped area.
		2289
		2290	=item $mapped->set ($offset, $data)
		2291
		2292	Replaces the data at the given C<$offset> in the memory area by the new
		2293	C<$data>. This method is safer than direct manipulation of C<$mapped>
		2294	because it does bounds-checking, but also slower.
		2295
		2296	=item $data = $mapped->get ($offset, $length)
		2297
		2298	Returns (without copying) a scalar representing the data at the given
		2299	C<$offset> and C<$length> in the mapped memory area. This is the same as
		2300	the following substr, except much slower;
		2301
		2302	$data = substr $$mapped, $offset, $length
		2303
1517	=cut	2304	=cut
1518		2305
1519	package OpenCL;	2306	sub OpenCL::Mapped::get {
1520		2307	substr ${$_[0]}, $_[1], $_[2]
1521	use common::sense;
1522
1523	BEGIN {
1524	our $VERSION = '0.96';
1525
1526	require XSLoader;
1527	XSLoader::load (__PACKAGE__, $VERSION);
1528
1529	@OpenCL::Buffer::ISA =
1530	@OpenCL::Image::ISA = OpenCL::Memory::;
1531
1532	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
1533
1534	@OpenCL::Image2D::ISA =
1535	@OpenCL::Image3D::ISA =
1536	@OpenCL::Image2DArray::ISA =
1537	@OpenCL::Image1D::ISA =
1538	@OpenCL::Image1DArray::ISA =
1539	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
1540
1541	@OpenCL::UserEvent::ISA = OpenCL::Event::;
1542	}	2308	}
		2309
		2310	=back
		2311
		2312	=head2 THE OpenCL::MappedBuffer CLASS
		2313
		2314	This is a subclass of OpenCL::Mapped, representing mapped buffers.
		2315
		2316	=head2 THE OpenCL::MappedImage CLASS
		2317
		2318	This is a subclass of OpenCL::Mapped, representing mapped images.
		2319
		2320	=over 4
		2321
		2322	=item $bytes = $mapped->row_pitch
		2323
		2324	=item $bytes = $mapped->slice_pitch
		2325
		2326	Return the row or slice pitch of the image that has been mapped.
		2327
		2328	=back
		2329
		2330
		2331	=cut
1543		2332
1544	1;	2333	1;
1545		2334
1546	=head1 AUTHOR	2335	=head1 AUTHOR
1547		2336

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