[ViewVC] Diff of: cvs/OpenCL/OpenCL.pm

Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.49 by root, Sat Apr 21 20:48:03 2012 UTC vs.
Revision 1.64 by root, Mon Apr 30 23:12:43 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:
49	no implementation was available to me :).
50		49
51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf	50	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf
		51	http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf
		52	http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf
52		53
53	OpenCL manpages:	54	OpenCL manpages:
54		55
55	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/	56	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/
		57	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/
56		58
57	If you are into UML class diagrams, the following diagram might help - if	59	If you are into UML class diagrams, the following diagram might help - if
58	not, it will be mildly cobfusing:	60	not, it will be mildly confusing (also, the class hierarchy of this module
		61	is much more fine-grained):
59		62
60	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/classDiagram.html	63	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/classDiagram.html
61		64
62	Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it	65	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:	66	is, but at least it's free of charge:
64		67
65	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf	68	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf
…		…
138	=head2 Create a buffer with some predefined data, read it back synchronously,	141	=head2 Create a buffer with some predefined data, read it back synchronously,
139	then asynchronously.	142	then asynchronously.
140		143
141	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");	144	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");
142		145
143	$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data);	146	$queue->read_buffer ($buf, 1, 1, 3, my $data);
144	print "$data\n";	147	print "$data\n";
145		148
146	my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data);	149	my $ev = $queue->read_buffer ($buf, 0, 1, 3, my $data);
147	$ev->wait;	150	$ev->wait;
148	print "$data\n"; # prints "elm"	151	print "$data\n"; # prints "elm"
149		152
150	=head2 Create and build a program, then create a kernel out of one of its	153	=head2 Create and build a program, then create a kernel out of one of its
151	functions.	154	functions.
…		…
157	$id = get_global_id (0);	160	$id = get_global_id (0);
158	output [id] = input [id] * input [id];	161	output [id] = input [id] * input [id];
159	}	162	}
160	';	163	';
161		164
162	my $prog = $ctx->program_with_source ($src);	165	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");	166	my $kernel = $prog->kernel ("squareit");
169		167
170	=head2 Create some input and output float buffers, then call the	168	=head2 Create some input and output float buffers, then call the
171	'squareit' kernel on them.	169	'squareit' kernel on them.
172		170
…		…
176	# set buffer	174	# set buffer
177	$kernel->set_buffer (0, $input);	175	$kernel->set_buffer (0, $input);
178	$kernel->set_buffer (1, $output);	176	$kernel->set_buffer (1, $output);
179		177
180	# execute it for all 4 numbers	178	# execute it for all 4 numbers
181	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	179	$queue->nd_range_kernel ($kernel, undef, [4], undef);
182		180
183	# enqueue a synchronous read	181	# enqueue a synchronous read
184	$queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	182	$queue->read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
185		183
186	# print the results:	184	# print the results:
187	printf "%s\n", join ", ", unpack "f*", $data;	185	printf "%s\n", join ", ", unpack "f*", $data;
188		186
189	=head2 The same enqueue operations as before, but assuming an out-of-order queue,	187	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
190	showing off barriers.	188	showing off barriers.
191		189
192	# execute it for all 4 numbers	190	# execute it for all 4 numbers
193	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	191	$queue->nd_range_kernel ($kernel, undef, [4], undef);
194		192
195	# enqueue a barrier to ensure in-order execution	193	# enqueue a barrier to ensure in-order execution
196	$queue->enqueue_barrier;	194	$queue->barrier;
197		195
198	# enqueue an async read	196	# enqueue an async read
199	$queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	197	$queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
200		198
201	# wait for all requests to finish	199	# wait for all requests to finish
202	$queue->finish;	200	$queue->finish;
203		201
204	=head2 The same enqueue operations as before, but assuming an out-of-order queue,	202	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
205	showing off event objects and wait lists.	203	showing off event objects and wait lists.
206		204
207	# execute it for all 4 numbers	205	# execute it for all 4 numbers
208	my $ev = $queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	206	my $ev = $queue->nd_range_kernel ($kernel, undef, [4], undef);
209		207
210	# enqueue an async read	208	# enqueue an async read
211	$ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);	209	$ev = $queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);
212		210
213	# wait for the last event to complete	211	# wait for the last event to complete
214	$ev->wait;	212	$ev->wait;
215		213
216	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia	214	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia
217	set tunnel effect.	215	set tunnel effect.
218		216
219	This is quite a long example to get you going.	217	This is quite a long example to get you going - you can download it from
		218	L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>.
220		219
221	use OpenGL ":all";	220	use OpenGL ":all";
222	use OpenCL;	221	use OpenCL;
223		222
		223	my $S = $ARGV[0] \|\| 256; # window/texture size, smaller is faster
		224
224	# open a window and create a gl texture	225	# open a window and create a gl texture
225	OpenGL::glpOpenWindow width => 256, height => 256;	226	OpenGL::glpOpenWindow width => $S, height => $S;
226	my $texid = glGenTextures_p 1;	227	my $texid = glGenTextures_p 1;
227	glBindTexture GL_TEXTURE_2D, $texid;	228	glBindTexture GL_TEXTURE_2D, $texid;
228	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;	229	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, $S, $S, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;
229		230
230	# find and use the first opencl device that let's us get a shared opengl context	231	# find and use the first opencl device that let's us get a shared opengl context
231	my $platform;	232	my $platform;
232	my $dev;	233	my $dev;
233	my $ctx;	234	my $ctx;
…		…
252	# now the boring opencl code	253	# now the boring opencl code
253	my $src = <<EOF;	254	my $src = <<EOF;
254	kernel void	255	kernel void
255	juliatunnel (write_only image2d_t img, float time)	256	juliatunnel (write_only image2d_t img, float time)
256	{	257	{
257	float2 p = (float2)(get_global_id (0), get_global_id (1)) / 256.f * 2.f - 1.f;	258	int2 xy = (int2)(get_global_id (0), get_global_id (1));
		259	float2 p = convert_float2 (xy) / $S.f * 2.f - 1.f;
258		260
259	float2 m = (float2)(1.f, p.y) / fabs (p.x);	261	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;	262	m.x = fabs (fmod (m.x + time * 0.05f, 4.f) - 2.f);
261		263
262	float2 z = m;	264	float2 z = m;
263	float2 c = (float2)(sin (time * 0.05005), cos (time * 0.06001));	265	float2 c = (float2)(sin (time * 0.01133f), cos (time * 0.02521f));
264		266
265	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i)	267	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;	268	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
267		269
268	float3 colour = (float3)(z.x, z.y, z.x * z.y);	270	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.));	271	write_imagef (img, xy, (float4)(colour * p.x * p.x, 1.));
270	}	272	}
271	EOF	273	EOF
		274
272	my $prog = $ctx->program_with_source ($src);	275	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");	276	my $kernel = $prog->kernel ("juliatunnel");
277		277
278	# program compiled, kernel ready, now draw and loop	278	# program compiled, kernel ready, now draw and loop
279		279
280	for (my $time; ; ++$time) {	280	for (my $time; ; ++$time) {
281	# acquire objects from opengl	281	# acquire objects from opengl
282	$queue->enqueue_acquire_gl_objects ([$tex]);	282	$queue->acquire_gl_objects ([$tex]);
283		283
284	# configure and run our kernel	284	# configure and run our kernel
285	$kernel->set_image2d (0, $tex);	285	$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);	286	$queue->nd_range_kernel ($kernel, undef, [$S, $S], undef);
288		287
289	# release objects to opengl again	288	# release objects to opengl again
290	$queue->enqueue_release_gl_objects ([$tex]);	289	$queue->release_gl_objects ([$tex]);
291		290
292	# wait	291	# wait
293	$queue->finish;	292	$queue->finish;
294		293
295	# now draw the texture, the defaults should be all right	294	# now draw the texture, the defaults should be all right
…		…
383		382
384	For this to work, the OpenGL library must be loaded, a GLX context must	383	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	384	have been created and be made current, and C<dlsym> must be available and
386	capable of finding the function via C<RTLD_DEFAULT>.	385	capable of finding the function via C<RTLD_DEFAULT>.
387		386
		387	=head2 EVENT SYSTEM
		388
		389	OpenCL can generate a number of (potentially) asynchronous events, for
		390	example, after compiling a program, to signal a context-related error or,
		391	perhaps most important, to signal completion of queued jobs (by setting
		392	callbacks on OpenCL::Event objects).
		393
		394	To facilitate this, this module maintains an event queue - each
		395	time an asynchronous event happens, it is queued, and perl will be
		396	interrupted. This is implemented via the L<Async::Interrupt> module. In
		397	addition, this module has L<AnyEvent> support, so it can seamlessly
		398	integrate itself into many event loops.
		399
		400	Since this module is a bit hard to understand, here are some case examples:
		401
		402	=head3 Don't use callbacks.
		403
		404	When your program never uses any callbacks, then there will never be any
		405	notifications you need to take care of, and therefore no need to worry
		406	about all this.
		407
		408	You can achieve a great deal by explicitly waiting for events, or using
		409	barriers and flush calls. In many programs, there is no need at all to
		410	tinker with asynchronous events.
		411
		412	=head3 Use AnyEvent
		413
		414	This module automatically registers a watcher that invokes all outstanding
		415	event callbacks when AnyEvent is initialised (and block asynchronous
		416	interruptions). Using this mode of operations is the safest and most
		417	recommended one.
		418
		419	To use this, simply use AnyEvent and this module normally, make sure you
		420	have an event loop running:
		421
		422	use Gtk2 -init;
		423	use AnyEvent;
		424
		425	# initialise AnyEvent, by creating a watcher, or:
		426	AnyEvent::detect;
		427
		428	my $e = $queue->marker;
		429	$e->cb (sub {
		430	warn "opencl is finished\n";
		431	})
		432
		433	main Gtk2;
		434
		435	Note that this module will not initialise AnyEvent for you. Before
		436	AnyEvent is initialised, the module will asynchronously interrupt perl
		437	instead. To avoid any surprises, it's best to explicitly initialise
		438	AnyEvent.
		439
		440	You can temporarily enable asynchronous interruptions (see next paragraph)
		441	by calling C<$OpenCL::INTERRUPT->unblock> and disable them again by
		442	calling C<$OpenCL::INTERRUPT->block>.
		443
		444	=head3 Let yourself be interrupted at any time
		445
		446	This mode is the default unless AnyEvent is loaded and initialised. In
		447	this mode, OpenCL asynchronously interrupts a running perl program. The
		448	emphasis is on both I<asynchronously> and I<running> here.
		449
		450	Asynchronously means that perl might execute your callbacks at any
		451	time. For example, in the following code (I<THAT YOU SHOULD NOT COPY>),
		452	the C<until> loop following the marker call will be interrupted by the
		453	callback:
		454
		455	my $e = $queue->marker;
		456	my $flag;
		457	$e->cb (sub { $flag = 1 });
		458	1 until $flag;
		459	# $flag is now 1
		460
		461	The reason why you shouldn't blindly copy the above code is that
		462	busy waiting is a really really bad thing, and really really bad for
		463	performance.
		464
		465	While at first this asynchronous business might look exciting, it can be
		466	really hard, because you need to be prepared for the callback code to be
		467	executed at any time, which limits the amount of things the callback code
		468	can do safely.
		469
		470	This can be mitigated somewhat by using C<<
		471	$OpenCL::INTERRUPT->scope_block >> (see the L<Async::Interrupt>
		472	documentation for details).
		473
		474	The other problem is that your program must be actively I<running> to be
		475	interrupted. When you calculate stuff, your program is running. When you
		476	hang in some C functions or other block execution (by calling C<sleep>,
		477	C<select>, running an event loop and so on), your program is waiting, not
		478	running.
		479
		480	One way around that would be to attach a read watcher to your event loop,
		481	listening for events on C<< $OpenCL::INTERRUPT->pipe_fileno >>, using a
		482	dummy callback (C<sub { }>) to temporarily execute some perl code.
		483
		484	That is then awfully close to using the built-in AnyEvent support above,
		485	though, so consider that one instead.
		486
		487	=head3 Be creative
		488
		489	OpenCL exports the L<Async::Interrupt> object it uses in the global
		490	variable C<$OpenCL::INTERRUPT>. You can configure it in any way you like.
		491
		492	So if you want to feel like a real pro, err, wait, if you feel no risk
		493	menas no fun, you can experiment by implementing your own mode of
		494	operations.
		495
		496	=cut
		497
		498	package OpenCL;
		499
		500	use common::sense;
		501	use Carp ();
		502	use Async::Interrupt ();
		503
		504	our $POLL_FUNC; # set by XS
		505
		506	BEGIN {
		507	our $VERSION = '0.98';
		508
		509	require XSLoader;
		510	XSLoader::load (__PACKAGE__, $VERSION);
		511
		512	@OpenCL::Platform::ISA =
		513	@OpenCL::Device::ISA =
		514	@OpenCL::Context::ISA =
		515	@OpenCL::Queue::ISA =
		516	@OpenCL::Memory::ISA =
		517	@OpenCL::Sampler::ISA =
		518	@OpenCL::Program::ISA =
		519	@OpenCL::Kernel::ISA =
		520	@OpenCL::Event::ISA = OpenCL::Object::;
		521
		522	@OpenCL::Buffer::ISA =
		523	@OpenCL::Image::ISA = OpenCL::Memory::;
		524
		525	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
		526
		527	@OpenCL::Image2D::ISA =
		528	@OpenCL::Image3D::ISA =
		529	@OpenCL::Image2DArray::ISA =
		530	@OpenCL::Image1D::ISA =
		531	@OpenCL::Image1DArray::ISA =
		532	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
		533
		534	@OpenCL::UserEvent::ISA = OpenCL::Event::;
		535	}
		536
388	=head2 THE OpenCL PACKAGE	537	=head2 THE OpenCL PACKAGE
389		538
390	=over 4	539	=over 4
391		540
392	=item $int = OpenCL::errno	541	=item $int = OpenCL::errno
393		542
394	The last error returned by a function - it's only valid after an error occured	543	The last error returned by a function - it's only valid after an error occured
395	and before calling another OpenCL function.	544	and before calling another OpenCL function.
396		545
397	=item $str = OpenCL::err2str $errval	546	=item $str = OpenCL::err2str [$errval]
398		547
399	Comverts an error value into a human readable string.	548	Converts an error value into a human readable string. IF no error value is
		549	given, then the last error will be used (as returned by OpenCL::errno).
400		550
401	=item $str = OpenCL::enum2str $enum	551	=item $str = OpenCL::enum2str $enum
402		552
403	Converts most enum values (of parameter names, image format constants,	553	Converts most enum values (of parameter names, image format constants,
404	object types, addressing and filter modes, command types etc.) into a	554	object types, addressing and filter modes, command types etc.) into a
…		…
410		560
411	Returns all available OpenCL::Platform objects.	561	Returns all available OpenCL::Platform objects.
412		562
413	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>	563	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
414		564
415	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef	565	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr
416		566
417	Tries to create a context from a default device and platform - never worked for me.	567	Tries to create a context from a default device and platform type - never worked for me.
418		568
419	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	569	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
420		570
		571	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
		572
		573	Create a new OpenCL::Context object using the given device object(s). This
		574	function isn't implemented yet, use C<< $platform->context >> instead.
		575
		576	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
		577
421	=item OpenCL::wait_for_events $wait_events...	578	=item OpenCL::wait_for_events $wait_events...
422		579
423	Waits for all events to complete.	580	Waits for all events to complete.
424		581
425	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	582	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
426		583
		584	=item OpenCL::poll
		585
		586	Checks if there are any outstanding events (see L<EVENT SYSTEM>) and
		587	invokes their callbacks.
		588
		589	=item $OpenCL::INTERRUPT
		590
		591	The L<Async::Interrupt> object used to signal asynchronous events (see
		592	L<EVENT SYSTEM>).
		593
		594	=cut
		595
		596	our $INTERRUPT = new Async::Interrupt c_cb => [$POLL_FUNC, 0];
		597
		598	&_eq_initialise ($INTERRUPT->signal_func);
		599
		600	=item $OpenCL::WATCHER
		601
		602	The L<AnyEvent> watcher object used to watch for asynchronous events (see
		603	L<EVENT SYSTEM>). This variable is C<undef> until L<AnyEvent> has been
		604	loaded I<and> initialised (e.g. by calling C<AnyEvent::detect>).
		605
		606	=cut
		607
		608	our $WATCHER;
		609
		610	sub _init_anyevent {
		611	$INTERRUPT->block;
		612	$WATCHER = AE::io ($INTERRUPT->pipe_fileno, 0, sub { $INTERRUPT->handle });
		613	}
		614
		615	if (defined $AnyEvent::MODEL) {
		616	_init_anyevent;
		617	} else {
		618	push @AnyEvent::post_detect, \&_init_anyevent;
		619	}
		620
427	=back	621	=back
428		622
		623	=head2 THE OpenCL::Object CLASS
		624
		625	This is the base class for all objects in the OpenCL module. The only
		626	method it implements is the C<id> method, which is only useful if you want
		627	to interface to OpenCL on the C level.
		628
		629	=over 4
		630
		631	=item $iv = $obj->id
		632
		633	OpenCL objects are represented by pointers or integers on the C level. If
		634	you want to interface to an OpenCL object directly on the C level, then
		635	you need this value, which is returned by this method. You should use an
		636	C<IV> type in your code and cast that to the correct type.
		637
		638	=cut
		639
		640	sub OpenCL::Object::id {
		641	ref $_[0] eq "SCALAR"
		642	? ${ $_[0] }
		643	: $_[0][0]
		644	}
		645
		646	=back
		647
429	=head2 THE OpenCL::Platform CLASS	648	=head2 THE OpenCL::Platform CLASS
430		649
431	=over 4	650	=over 4
432		651
433	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)	652	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)
434		653
435	Returns a list of matching OpenCL::Device objects.	654	Returns a list of matching OpenCL::Device objects.
436		655
437	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef)	656	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr)
438		657
439	Tries to create a context. Never worked for me, and you need devices explicitly anyway.	658	Tries to create a context. Never worked for me, and you need devices explicitly anyway.
440		659
441	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	660	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
442		661
443	=item $ctx = $platform->context ($properties = undef, @$devices, $notify = undef)	662	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
444		663
445	Create a new OpenCL::Context object using the given device object(s)- a	664	Create a new OpenCL::Context object using the given device object(s)- a
446	CL_CONTEXT_PLATFORM property is supplied automatically.	665	CL_CONTEXT_PLATFORM property is supplied automatically.
447		666
448	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>	667	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
…		…
456	It's best to avoid this method and use one of the following convenience	675	It's best to avoid this method and use one of the following convenience
457	wrappers.	676	wrappers.
458		677
459	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>	678	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>
460		679
		680	=item $platform->unload_compiler
		681
		682	Attempts to unload the compiler for this platform, for endless
		683	profit. Does nothing on OpenCL 1.1.
		684
		685	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clUnloadPlatformCompiler.html>
		686
461	=for gengetinfo begin platform	687	=for gengetinfo begin platform
462		688
463	=item $string = $platform->profile	689	=item $string = $platform->profile
464		690
465	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.	691	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.
…		…
765	=back	991	=back
766		992
767	=head2 THE OpenCL::Context CLASS	993	=head2 THE OpenCL::Context CLASS
768		994
769	=over 4	995	=over 4
		996
		997	=item $prog = $ctx->build_program ($program, $options = "")
		998
		999	This convenience function tries to build the program on all devices in
		1000	the context. If the build fails, then the function will C<croak> with the
		1001	build log. Otherwise ti returns the program object.
		1002
		1003	The C<$program> can either be a C<OpenCL::Program> object or a string
		1004	containing the program. In the latter case, a program objetc will be
		1005	created automatically.
		1006
		1007	=cut
		1008
		1009	sub OpenCL::Context::build_program {
		1010	my ($self, $prog, $options) = @_;
		1011
		1012	$prog = $self->program_with_source ($prog)
		1013	unless ref $prog;
		1014
		1015	eval { $prog->build (undef, $options); 1 }
		1016	or errno == BUILD_PROGRAM_FAILURE
		1017	or errno == INVALID_BINARY # workaround nvidia bug
		1018	or Carp::croak "OpenCL::Context->build_program: " . err2str;
		1019
		1020	# we check status for all devices
		1021	for my $dev ($self->devices) {
		1022	$prog->build_status ($dev) == BUILD_SUCCESS
		1023	or Carp::croak "Building OpenCL program for device '" . $dev->name . "' failed:\n"
		1024	. $prog->build_log ($dev);
		1025	}
		1026
		1027	$prog
		1028	}
770		1029
771	=item $queue = $ctx->queue ($device, $properties)	1030	=item $queue = $ctx->queue ($device, $properties)
772		1031
773	Create a new OpenCL::Queue object from the context and the given device.	1032	Create a new OpenCL::Queue object from the context and the given device.
774		1033
…		…
794	=item $buf = $ctx->buffer_sv ($flags, $data)	1053	=item $buf = $ctx->buffer_sv ($flags, $data)
795		1054
796	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and	1055	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and
797	initialise it with the given data values.	1056	initialise it with the given data values.
798		1057
799	=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)	1058	=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)
800		1059
801	Creates a new OpenCL::Image object and optionally initialises it with	1060	Creates a new OpenCL::Image object and optionally initialises it with
802	the given data values.	1061	the given data values.
803		1062
804	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>	1063	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>
…		…
900	=back	1159	=back
901		1160
902	=head2 THE OpenCL::Queue CLASS	1161	=head2 THE OpenCL::Queue CLASS
903		1162
904	An OpenCL::Queue represents an execution queue for OpenCL. You execute	1163	An OpenCL::Queue represents an execution queue for OpenCL. You execute
905	requests by calling their respective C<enqueue_xxx> method and waitinf for	1164	requests by calling their respective method and waiting for it to complete
906	it to complete in some way.	1165	in some way.
907		1166
908	All the enqueue methods return an event object that can be used to wait	1167	Most methods that enqueue some request return an event object that can
909	for completion, unless the method is called in void context, in which case	1168	be used to wait for completion (optionally using a callback), unless
910	no event object is created.	1169	the method is called in void context, in which case no event object is
		1170	created.
911		1171
912	They also allow you to specify any number of other event objects that this	1172	They also allow you to specify any number of other event objects that this
913	request has to wait for before it starts executing, by simply passing the	1173	request has to wait for before it starts executing, by simply passing the
914	event objects as extra parameters to the enqueue methods. To simplify	1174	event objects as extra parameters to the enqueue methods. To simplify
915	program design, this module ignores any C<undef> values in the list of	1175	program design, this module ignores any C<undef> values in the list of
916	events. This makes it possible to code operations such as this, without	1176	events. This makes it possible to code operations such as this, without
917	having to put a valid event object into C<$event> first:	1177	having to put a valid event object into C<$event> first:
918		1178
919	$event = $queue->enqueue_xxx (..., $event);	1179	$event = $queue->xxx (..., $event);
920		1180
921	Queues execute in-order by default, without any parallelism, so in most	1181	Queues execute in-order by default, without any parallelism, so in most
922	cases (i.e. you use only one queue) it's not necessary to wait for or	1182	cases (i.e. you use only one queue) it's not necessary to wait for or
923	create event objects, althoguh an our of order queue is often a bit	1183	create event objects, althoguh an our of order queue is often a bit
924	faster.	1184	faster.
925		1185
926	=over 4	1186	=over 4
927		1187
928	=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)	1188	=item $ev = $queue->read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)
929		1189
930	Reads data from buffer into the given string.	1190	Reads data from buffer into the given string.
931		1191
932	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>	1192	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>
933		1193
934	=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)	1194	=item $ev = $queue->write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)
935		1195
936	Writes data to buffer from the given string.	1196	Writes data to buffer from the given string.
937		1197
938	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>	1198	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>
939		1199
940	=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)	1200	=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)
941		1201
942	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>	1202	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>
943		1203
944	=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...)	1204	=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...)
945		1205
946	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html	1206	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html
947		1207
948	=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...)	1208	=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...)
949		1209
950	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html	1210	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html
951		1211
952	=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1212	=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
953		1213
954	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>	1214	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>
955		1215
956	=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...)	1216	=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
957		1217
958	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>	1218	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>
959		1219
960	=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1220	=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
961		1221
962	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>	1222	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>
963		1223
964	=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...)	1224	=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...)
965		1225
966	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>	1226	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>
967		1227
968	=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...)	1228	=item $ev = $queue->copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...)
969		1229
970	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>	1230	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>
971		1231
972	=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...)	1232	=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...)
973		1233
974	Yeah.	1234	Yeah.
975		1235
976	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.	1236	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.
977		1237
		1238	=item $ev = $queue->fill_buffer ($mem, $pattern, $offset, $size, ...)
		1239
		1240	Fills the given buffer object with repeated applications of C<$pattern>,
		1241	starting at C<$offset> for C<$size> octets.
		1242
		1243	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillBuffer.html>
		1244
		1245	=item $ev = $queue->fill_image ($img, $r, $g, $b, $a, $x, $y, $z, $width, $height, $depth, ...)
		1246
		1247	Fills the given image area with the given rgba colour components. The
		1248	components are normally floating point values between C<0> and C<1>,
		1249	except when the image channel data type is a signe dor unsigned
		1250	unnormalised format, in which case the range is determined by the format.
		1251
		1252	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillImage.html>
		1253
978	=item $ev = $queue->enqueue_task ($kernel, $wait_events...)	1254	=item $ev = $queue->task ($kernel, $wait_events...)
979		1255
980	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>	1256	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>
981		1257
982	=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...)	1258	=item $ev = $queue->nd_range_kernel ($kernel, \@global_work_offset, \@global_work_size, \@local_work_size, $wait_events...)
983		1259
984	Enqueues a kernel execution.	1260	Enqueues a kernel execution.
985		1261
986	@$global_work_size must be specified as a reference to an array of	1262	\@global_work_size must be specified as a reference to an array of
987	integers specifying the work sizes (element counts).	1263	integers specifying the work sizes (element counts).
988		1264
989	@$global_work_offset must be either C<undef> (in which case all offsets	1265	\@global_work_offset must be either C<undef> (in which case all offsets
990	are C<0>), or a reference to an array of work offsets, with the same number	1266	are C<0>), or a reference to an array of work offsets, with the same number
991	of elements as @$global_work_size.	1267	of elements as \@global_work_size.
992		1268
993	@$local_work_size must be either C<undef> (in which case the	1269	\@local_work_size must be either C<undef> (in which case the
994	implementation is supposed to choose good local work sizes), or a	1270	implementation is supposed to choose good local work sizes), or a
995	reference to an array of local work sizes, with the same number of	1271	reference to an array of local work sizes, with the same number of
996	elements as @$global_work_size.	1272	elements as \@global_work_size.
997		1273
998	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>	1274	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
999		1275
1000	=item $ev = $queue->enqueue_acquire_gl_objects ([object, ...], $wait_events...)	1276	=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)
1001		1277
1002	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired	1278	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired
1003	for subsequent OpenCL usage.	1279	for subsequent OpenCL usage.
1004		1280
1005	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>	1281	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>
1006		1282
1007	=item $ev = $queue->enqueue_release_gl_objects ([object, ...], $wait_events...)	1283	=item $ev = $queue->release_gl_objects ([object, ...], $wait_events...)
1008		1284
1009	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released	1285	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released
1010	for subsequent OpenGL usage.	1286	for subsequent OpenGL usage.
1011		1287
1012	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>	1288	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>
1013		1289
1014	=item $ev = $queue->enqueue_wait_for_events ($wait_events...)	1290	=item $ev = $queue->wait_for_events ($wait_events...)
1015		1291
1016	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>	1292	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>
1017		1293
1018	=item $ev = $queue->enqueue_marker ($wait_events...)	1294	=item $ev = $queue->marker ($wait_events...)
1019		1295
1020	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html>	1296	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html>
1021		1297
1022	=item $ev = $queue->enqueue_barrier ($wait_events...)	1298	=item $ev = $queue->barrier ($wait_events...)
1023		1299
1024	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html>	1300	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html>
1025		1301
1026	=item $queue->flush	1302	=item $queue->flush
1027		1303
…		…
1150	OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D,	1426	OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D,
1151	OpenCL::Image2DArray and OpenCL::Image3D.	1427	OpenCL::Image2DArray and OpenCL::Image3D.
1152		1428
1153	=over 4	1429	=over 4
1154		1430
1155	=item $packed_value = $ev->image_info ($name)	1431	=item $packed_value = $image->image_info ($name)
1156		1432
1157	See C<< $platform->info >> for details.	1433	See C<< $platform->info >> for details.
1158		1434
1159	The reason this method is not called C<info> is that there already is an	1435	The reason this method is not called C<info> is that there already is an
1160	C<< ->info >> method inherited from C<OpenCL::Memory>.	1436	C<< ->info >> method inherited from C<OpenCL::Memory>.
1161		1437
1162	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>	1438	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
1163		1439
		1440	=item ($channel_order, $channel_data_type) = $image->format
		1441
		1442	Returns the channel order and type used to create the image by calling
		1443	C<clGetImageInfo> with C<CL_IMAGE_FORMAT>.
		1444
1164	=for gengetinfo begin image	1445	=for gengetinfo begin image
1165		1446
1166	=item $int = $image->element_size	1447	=item $int = $image->element_size
1167		1448
1168	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.	1449	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.
…		…
1241		1522
1242	=head2 THE OpenCL::Program CLASS	1523	=head2 THE OpenCL::Program CLASS
1243		1524
1244	=over 4	1525	=over 4
1245		1526
1246	=item $program->build ($device, $options = "")	1527	=item $program->build (\@devices = undef, $options = "", $cb->($program) = undef)
1247		1528
1248	Tries to build the program with the givne options.	1529	Tries to build the program with the given options. See also the
		1530	C<$ctx->build> convenience function.
		1531
		1532	If a callback is specified, then it will be called when compilation is
		1533	finished. Note that many OpenCL implementations block your program while
		1534	compiling whether you use a callback or not. See C<build_async> if you
		1535	want to make sure the build is done in the background.
		1536
		1537	Note that some OpenCL implementations act up badly, and don't call the
		1538	callback in some error cases (but call it in others). This implementation
		1539	assumes the callback will always be called, and leaks memory if this is
		1540	not so. So best make sure you don't pass in invalid values.
		1541
		1542	Some implementations fail with C<OpenCL::INVALID_BINARY> when the
		1543	compilation state is successful but some later stage fails.
1249		1544
1250	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>	1545	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
		1546
		1547	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
		1548
		1549	Similar to C<< ->build >>, except it starts a thread, and never fails (you
		1550	need to check the compilation status form the callback, or by polling).
1251		1551
1252	=item $packed_value = $program->build_info ($device, $name)	1552	=item $packed_value = $program->build_info ($device, $name)
1253		1553
1254	Similar to C<< $platform->info >>, but returns build info for a previous	1554	Similar to C<< $platform->info >>, but returns build info for a previous
1255	build attempt for the given device.	1555	build attempt for the given device.
…		…
1260		1560
1261	Creates an OpenCL::Kernel object out of the named C<__kernel> function in	1561	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
1262	the program.	1562	the program.
1263		1563
1264	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>	1564	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>
		1565
		1566	=item @kernels = $program->kernels_in_program
		1567
		1568	Returns all kernels successfully compiled for all devices in program.
		1569
		1570	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernelsInProgram.html
1265		1571
1266	=for gengetinfo begin program_build	1572	=for gengetinfo begin program_build
1267		1573
1268	=item $build_status = $program->build_status ($device)	1574	=item $build_status = $program->build_status ($device)
1269		1575
…		…
1391		1697
1392	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.	1698	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.
1393		1699
1394	=for gengetinfo end kernel_work_group	1700	=for gengetinfo end kernel_work_group
1395		1701
		1702	=item $kernel->setf ($format, ...)
		1703
		1704	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
		1705	way to set arguments (and with OpenCL 1.2 it might be rather slow), you
		1706	need to specify a format argument, much as with C<printf>, to tell OpenCL
		1707	what type of argument it is.
		1708
		1709	The format arguments are single letters:
		1710
		1711	c char
		1712	C unsigned char
		1713	s short
		1714	S unsigned short
		1715	i int
		1716	I unsigned int
		1717	l long
		1718	L unsigned long
		1719
		1720	h half float (0..65535)
		1721	f float
		1722	d double
		1723
		1724	z local (octet size)
		1725
		1726	m memory object (buffer or image)
		1727	a sampler
		1728	e event
		1729
		1730	Space characters in the format string are ignored.
		1731
		1732	Example: set the arguments for a kernel that expects an int, two floats, a buffer and an image.
		1733
		1734	$kernel->setf ("i ff mm", 5, 0.5, 3, $buffer, $image);
		1735
1396	=item $kernel->set_TYPE ($index, $value)	1736	=item $kernel->set_TYPE ($index, $value)
1397		1737
		1738	=item $kernel->set_char ($index, $value)
		1739
		1740	=item $kernel->set_uchar ($index, $value)
		1741
		1742	=item $kernel->set_short ($index, $value)
		1743
		1744	=item $kernel->set_ushort ($index, $value)
		1745
		1746	=item $kernel->set_int ($index, $value)
		1747
		1748	=item $kernel->set_uint ($index, $value)
		1749
		1750	=item $kernel->set_long ($index, $value)
		1751
		1752	=item $kernel->set_ulong ($index, $value)
		1753
		1754	=item $kernel->set_half ($index, $value)
		1755
		1756	=item $kernel->set_float ($index, $value)
		1757
		1758	=item $kernel->set_double ($index, $value)
		1759
		1760	=item $kernel->set_memory ($index, $value)
		1761
		1762	=item $kernel->set_buffer ($index, $value)
		1763
		1764	=item $kernel->set_image ($index, $value)
		1765
		1766	=item $kernel->set_sampler ($index, $value)
		1767
		1768	=item $kernel->set_local ($index, $value)
		1769
		1770	=item $kernel->set_event ($index, $value)
		1771
1398	This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>.	1772	This is a family of methods to set the kernel argument with the number
1399		1773	C<$index> to the give C<$value>.
1400	TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>,
1401	C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>,
1402	C<image2d>, C<image3d>, C<sampler>, C<local> or C<event>.
1403		1774
1404	Chars and integers (including the half type) are specified as integers,	1775	Chars and integers (including the half type) are specified as integers,
1405	float and double as floating point values, memory/buffer/image2d/image3d	1776	float and double as floating point values, memory/buffer/image must be
1406	must be an object of that type or C<undef>, local-memory arguments are	1777	an object of that type or C<undef>, local-memory arguments are set by
1407	set by specifying the size, and sampler and event must be objects of that	1778	specifying the size, and sampler and event must be objects of that type.
1408	type.	1779
		1780	Note that C<set_memory> works for all memory objects (all types of buffers
		1781	and images) - the main purpose of the more specific C<set_TYPE> functions
		1782	is type checking.
		1783
		1784	Setting an argument for a kernel does NOT keep a reference to the object -
		1785	for example, if you set an argument to some image object, free the image,
		1786	and call the kernel, you will run into undefined behaviour.
1409		1787
1410	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>	1788	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>
1411		1789
1412	=back	1790	=back
1413		1791
…		…
1422		1800
1423	Waits for the event to complete.	1801	Waits for the event to complete.
1424		1802
1425	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	1803	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
1426		1804
		1805	=item $ev->cb ($exec_callback_type, $callback->($event, $event_command_exec_status))
		1806
		1807	Adds a callback to the callback stack for the given event type. There is
		1808	no way to remove a callback again.
		1809
		1810	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html>
		1811
1427	=item $packed_value = $ev->info ($name)	1812	=item $packed_value = $ev->info ($name)
1428		1813
1429	See C<< $platform->info >> for details.	1814	See C<< $platform->info >> for details.
1430		1815
1431	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>	1816	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>
…		…
1491		1876
1492	=over 4	1877	=over 4
1493		1878
1494	=item $ev->set_status ($execution_status)	1879	=item $ev->set_status ($execution_status)
1495		1880
		1881	Sets the execution status of the user event. Can only be called once,
		1882	either with OpenCL::COMPLETE or a negative number as status.
		1883
1496	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>	1884	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1497		1885
1498	=back	1886	=back
1499		1887
1500	=cut	1888	=cut
1501
1502	package OpenCL;
1503
1504	use common::sense;
1505
1506	BEGIN {
1507	our $VERSION = '0.96';
1508
1509	require XSLoader;
1510	XSLoader::load (__PACKAGE__, $VERSION);
1511
1512	@OpenCL::Buffer::ISA =
1513	@OpenCL::Image::ISA = OpenCL::Memory::;
1514
1515	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
1516
1517	@OpenCL::Image2D::ISA =
1518	@OpenCL::Image3D::ISA =
1519	@OpenCL::Image2DArray::ISA =
1520	@OpenCL::Image1D::ISA =
1521	@OpenCL::Image1DArray::ISA =
1522	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
1523
1524	@OpenCL::UserEvent::ISA = OpenCL::Event::;
1525	}
1526		1889
1527	1;	1890	1;
1528		1891
1529	=head1 AUTHOR	1892	=head1 AUTHOR
1530		1893

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Comparing OpenCL/OpenCL.pm (file contents): Revision 1.49 by root, Sat Apr 21 20:48:03 2012 UTC vs. Revision 1.64 by root, Mon Apr 30 23:12:43 2012 UTC

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Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.49 by root, Sat Apr 21 20:48:03 2012 UTC vs.
Revision 1.64 by root, Mon Apr 30 23:12:43 2012 UTC