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

Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.37 by root, Thu Apr 19 14:36:46 2012 UTC vs.
Revision 1.62 by root, Sat Apr 28 13:33:04 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); 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;
		213
		214	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia
		215	set tunnel effect.
		216
		217	This is quite a long example to get you going.
		218
		219	use OpenGL ":all";
		220	use OpenCL;
		221
		222	# open a window and create a gl texture
		223	OpenGL::glpOpenWindow width => 256, height => 256;
		224	my $texid = glGenTextures_p 1;
		225	glBindTexture GL_TEXTURE_2D, $texid;
		226	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;
		227
		228	# find and use the first opencl device that let's us get a shared opengl context
		229	my $platform;
		230	my $dev;
		231	my $ctx;
		232
		233	for (OpenCL::platforms) {
		234	$platform = $_;
		235	for ($platform->devices) {
		236	$dev = $_;
		237	$ctx = $platform->context ([OpenCL::GLX_DISPLAY_KHR, undef, OpenCL::GL_CONTEXT_KHR, undef], [$dev])
		238	and last;
		239	}
		240	}
		241
		242	$ctx
		243	or die "cannot find suitable OpenCL device\n";
		244
		245	my $queue = $ctx->queue ($dev);
		246
		247	# now attach an opencl image2d object to the opengl texture
		248	my $tex = $ctx->gl_texture2d (OpenCL::MEM_WRITE_ONLY, GL_TEXTURE_2D, 0, $texid);
		249
		250	# now the boring opencl code
		251	my $src = <<EOF;
		252	kernel void
		253	juliatunnel (write_only image2d_t img, float time)
		254	{
		255	float2 p = (float2)(get_global_id (0), get_global_id (1)) / 256.f * 2.f - 1.f;
		256
		257	float2 m = (float2)(1.f, p.y) / fabs (p.x);
		258	m.x = fabs (fmod (m.x + time * 0.05f, 4.f)) - 2.f;
		259
		260	float2 z = m;
		261	float2 c = (float2)(sin (time * 0.05005), cos (time * 0.06001));
		262
		263	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i)
		264	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
		265
		266	float3 colour = (float3)(z.x, z.y, z.x * z.y);
		267	write_imagef (img, (int2)(get_global_id (0), get_global_id (1)), (float4)(colour * p.x * p.x, 1.));
		268	}
		269	EOF
		270
		271	my $prog = $ctx->build_program ($src);
		272	my $kernel = $prog->kernel ("juliatunnel");
		273
		274	# program compiled, kernel ready, now draw and loop
		275
		276	for (my $time; ; ++$time) {
		277	# acquire objects from opengl
		278	$queue->acquire_gl_objects ([$tex]);
		279
		280	# configure and run our kernel
		281	$kernel->set_image2d (0, $tex);
		282	$kernel->set_float (1, $time);
		283	$queue->nd_range_kernel ($kernel, undef, [256, 256], undef);
		284
		285	# release objects to opengl again
		286	$queue->release_gl_objects ([$tex]);
		287
		288	# wait
		289	$queue->finish;
		290
		291	# now draw the texture, the defaults should be all right
		292	glTexParameterf GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
		293
		294	glEnable GL_TEXTURE_2D;
		295	glBegin GL_QUADS;
		296	glTexCoord2f 0, 1; glVertex3i -1, -1, -1;
		297	glTexCoord2f 0, 0; glVertex3i 1, -1, -1;
		298	glTexCoord2f 1, 0; glVertex3i 1, 1, -1;
		299	glTexCoord2f 1, 1; glVertex3i -1, 1, -1;
		300	glEnd;
		301
		302	glXSwapBuffers;
		303
		304	select undef, undef, undef, 1/60;
		305	}
215		306
216	=head1 DOCUMENTATION	307	=head1 DOCUMENTATION
217		308
218	=head2 BASIC CONVENTIONS	309	=head2 BASIC CONVENTIONS
219		310
…		…
241	=item * Structures are often specified by flattening out their components	332	=item * Structures are often specified by flattening out their components
242	as with short vectors, and returned as arrayrefs.	333	as with short vectors, and returned as arrayrefs.
243		334
244	=item * When enqueuing commands, the wait list is specified by adding	335	=item * When enqueuing commands, the wait list is specified by adding
245	extra arguments to the function - anywhere a C<$wait_events...> argument	336	extra arguments to the function - anywhere a C<$wait_events...> argument
246	is documented this can be any number of event objects.	337	is documented this can be any number of event objects. As an extsnion
		338	implemented by this module, C<undef> values will be ignored in the event
		339	list.
247		340
248	=item * When enqueuing commands, if the enqueue method is called in void	341	=item * When enqueuing commands, if the enqueue method is called in void
249	context, no event is created. In all other contexts an event is returned	342	context, no event is created. In all other contexts an event is returned
250	by the method.	343	by the method.
251		344
…		…
275		368
276	=head2 GLX SUPPORT	369	=head2 GLX SUPPORT
277		370
278	Due to the sad state that OpenGL support is in in Perl (mostly the OpenGL	371	Due to the sad state that OpenGL support is in in Perl (mostly the OpenGL
279	module, which has little to no documentation and has little to no support	372	module, which has little to no documentation and has little to no support
280	for glx), this module, as a special extension, treats context creation	373	for glX), this module, as a special extension, treats context creation
281	properties C<OpenCL::GLX_DISPLAY_KHR> and C<OpenCL::GL_CONTEXT_KHR>	374	properties C<OpenCL::GLX_DISPLAY_KHR> and C<OpenCL::GL_CONTEXT_KHR>
282	specially: If either or both of these are C<undef>, then the OpenCL	375	specially: If either or both of these are C<undef>, then the OpenCL
283	module tries to dynamically resolve C<glxGetCurrentDisplay> and	376	module tries to dynamically resolve C<glXGetCurrentDisplay> and
284	C<glxGetCurrentContext>, call these functions and use their return values	377	C<glXGetCurrentContext>, call these functions and use their return values
285	instead.	378	instead.
286		379
287	For this to work, the OpenGL library must be loaded, a GLX context must	380	For this to work, the OpenGL library must be loaded, a GLX context must
288	have been created and be made current, and C<dlsym> must be available and	381	have been created and be made current, and C<dlsym> must be available and
289	capable of finding the function via C<RTLD_DEFAULT>.	382	capable of finding the function via C<RTLD_DEFAULT>.
290		383
		384	=head2 EVENT SYSTEM
		385
		386	OpenCL can generate a number of (potentially) asynchronous events, for
		387	example, after compiling a program, to signal a context-related error or,
		388	perhaps most important, to signal completion of queued jobs (by setting
		389	callbacks on OpenCL::Event objects).
		390
		391	To facilitate this, this module maintains an event queue - each
		392	time an asynchronous event happens, it is queued, and perl will be
		393	interrupted. This is implemented via the L<Async::Interrupt> module. In
		394	addition, this module has L<AnyEvent> support, so it can seamlessly
		395	integrate itself into many event loops.
		396
		397	Since this module is a bit hard to understand, here are some case examples:
		398
		399	=head3 Don't use callbacks.
		400
		401	When your program never uses any callbacks, then there will never be any
		402	notifications you need to take care of, and therefore no need to worry
		403	about all this.
		404
		405	You can achieve a great deal by explicitly waiting for events, or using
		406	barriers and flush calls. In many programs, there is no need at all to
		407	tinker with asynchronous events.
		408
		409	=head3 Use AnyEvent
		410
		411	This module automatically registers a watcher that invokes all outstanding
		412	event callbacks when AnyEvent is initialised (and block asynchronous
		413	interruptions). Using this mode of operations is the safest and most
		414	recommended one.
		415
		416	To use this, simply use AnyEvent and this module normally, make sure you
		417	have an event loop running:
		418
		419	use Gtk2 -init;
		420	use AnyEvent;
		421
		422	# initialise AnyEvent, by creating a watcher, or:
		423	AnyEvent::detect;
		424
		425	my $e = $queue->marker;
		426	$e->cb (sub {
		427	warn "opencl is finished\n";
		428	})
		429
		430	main Gtk2;
		431
		432	Note that this module will not initialise AnyEvent for you. Before
		433	AnyEvent is initialised, the module will asynchronously interrupt perl
		434	instead. To avoid any surprises, it's best to explicitly initialise
		435	AnyEvent.
		436
		437	You can temporarily enable asynchronous interruptions (see next paragraph)
		438	by calling C<$OpenCL::INTERRUPT->unblock> and disable them again by
		439	calling C<$OpenCL::INTERRUPT->block>.
		440
		441	=head3 Let yourself be interrupted at any time
		442
		443	This mode is the default unless AnyEvent is loaded and initialised. In
		444	this mode, OpenCL asynchronously interrupts a running perl program. The
		445	emphasis is on both I<asynchronously> and I<running> here.
		446
		447	Asynchronously means that perl might execute your callbacks at any
		448	time. For example, in the following code (I<THAT YOU SHOULD NOT COPY>),
		449	the C<until> loop following the marker call will be interrupted by the
		450	callback:
		451
		452	my $e = $queue->marker;
		453	my $flag;
		454	$e->cb (sub { $flag = 1 });
		455	1 until $flag;
		456	# $flag is now 1
		457
		458	The reason why you shouldn't blindly copy the above code is that
		459	busy waiting is a really really bad thing, and really really bad for
		460	performance.
		461
		462	While at first this asynchronous business might look exciting, it can be
		463	really hard, because you need to be prepared for the callback code to be
		464	executed at any time, which limits the amount of things the callback code
		465	can do safely.
		466
		467	This can be mitigated somewhat by using C<<
		468	$OpenCL::INTERRUPT->scope_block >> (see the L<Async::Interrupt>
		469	documentation for details).
		470
		471	The other problem is that your program must be actively I<running> to be
		472	interrupted. When you calculate stuff, your program is running. When you
		473	hang in some C functions or other block execution (by calling C<sleep>,
		474	C<select>, running an event loop and so on), your program is waiting, not
		475	running.
		476
		477	One way around that would be to attach a read watcher to your event loop,
		478	listening for events on C<< $OpenCL::INTERRUPT->pipe_fileno >>, using a
		479	dummy callback (C<sub { }>) to temporarily execute some perl code.
		480
		481	That is then awfully close to using the built-in AnyEvent support above,
		482	though, so consider that one instead.
		483
		484	=head3 Be creative
		485
		486	OpenCL exports the L<Async::Interrupt> object it uses in the global
		487	variable C<$OpenCL::INTERRUPT>. You can configure it in any way you like.
		488
		489	So if you want to feel like a real pro, err, wait, if you feel no risk
		490	menas no fun, you can experiment by implementing your own mode of
		491	operations.
		492
		493	=cut
		494
		495	package OpenCL;
		496
		497	use common::sense;
		498	use Carp ();
		499	use Async::Interrupt ();
		500
		501	our $POLL_FUNC; # set by XS
		502
		503	BEGIN {
		504	our $VERSION = '0.98';
		505
		506	require XSLoader;
		507	XSLoader::load (__PACKAGE__, $VERSION);
		508
		509	@OpenCL::Platform::ISA =
		510	@OpenCL::Device::ISA =
		511	@OpenCL::Context::ISA =
		512	@OpenCL::Queue::ISA =
		513	@OpenCL::Memory::ISA =
		514	@OpenCL::Sampler::ISA =
		515	@OpenCL::Program::ISA =
		516	@OpenCL::Kernel::ISA =
		517	@OpenCL::Event::ISA = OpenCL::Object::;
		518
		519	@OpenCL::Buffer::ISA =
		520	@OpenCL::Image::ISA = OpenCL::Memory::;
		521
		522	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
		523
		524	@OpenCL::Image2D::ISA =
		525	@OpenCL::Image3D::ISA =
		526	@OpenCL::Image2DArray::ISA =
		527	@OpenCL::Image1D::ISA =
		528	@OpenCL::Image1DArray::ISA =
		529	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
		530
		531	@OpenCL::UserEvent::ISA = OpenCL::Event::;
		532	}
		533
291	=head2 THE OpenCL PACKAGE	534	=head2 THE OpenCL PACKAGE
292		535
293	=over 4	536	=over 4
294		537
295	=item $int = OpenCL::errno	538	=item $int = OpenCL::errno
296		539
297	The last error returned by a function - it's only valid after an error occured	540	The last error returned by a function - it's only valid after an error occured
298	and before calling another OpenCL function.	541	and before calling another OpenCL function.
299		542
300	=item $str = OpenCL::err2str $errval	543	=item $str = OpenCL::err2str [$errval]
301		544
302	Comverts an error value into a human readable string.	545	Converts an error value into a human readable string. IF no error value is
		546	given, then the last error will be used (as returned by OpenCL::errno).
303		547
304	=item $str = OpenCL::enum2str $enum	548	=item $str = OpenCL::enum2str $enum
305		549
306	Converts most enum values (of parameter names, image format constants,	550	Converts most enum values (of parameter names, image format constants,
307	object types, addressing and filter modes, command types etc.) into a	551	object types, addressing and filter modes, command types etc.) into a
…		…
313		557
314	Returns all available OpenCL::Platform objects.	558	Returns all available OpenCL::Platform objects.
315		559
316	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>	560	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
317		561
318	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef	562	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr
319		563
320	Tries to create a context from a default device and platform - never worked for me.	564	Tries to create a context from a default device and platform type - never worked for me.
321		565
322	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	566	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
323		567
		568	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
		569
		570	Create a new OpenCL::Context object using the given device object(s). This
		571	function isn't implemented yet, use C<< $platform->context >> instead.
		572
		573	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
		574
324	=item OpenCL::wait_for_events $wait_events...	575	=item OpenCL::wait_for_events $wait_events...
325		576
326	Waits for all events to complete.	577	Waits for all events to complete.
327		578
328	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	579	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
329		580
		581	=item OpenCL::poll
		582
		583	Checks if there are any outstanding events (see L<EVENT SYSTEM>) and
		584	invokes their callbacks.
		585
		586	=item $OpenCL::INTERRUPT
		587
		588	The L<Async::Interrupt> object used to signal asynchronous events (see
		589	L<EVENT SYSTEM>).
		590
		591	=cut
		592
		593	our $INTERRUPT = new Async::Interrupt c_cb => [$POLL_FUNC, 0];
		594
		595	&_eq_initialise ($INTERRUPT->signal_func);
		596
		597	=item $OpenCL::WATCHER
		598
		599	The L<AnyEvent> watcher object used to watch for asynchronous events (see
		600	L<EVENT SYSTEM>). This variable is C<undef> until L<AnyEvent> has been
		601	loaded I<and> initialised (e.g. by calling C<AnyEvent::detect>).
		602
		603	=cut
		604
		605	our $WATCHER;
		606
		607	sub _init_anyevent {
		608	$INTERRUPT->block;
		609	$WATCHER = AE::io ($INTERRUPT->pipe_fileno, 0, sub { $INTERRUPT->handle });
		610	}
		611
		612	if (defined $AnyEvent::MODEL) {
		613	_init_anyevent;
		614	} else {
		615	push @AnyEvent::post_detect, \&_init_anyevent;
		616	}
		617
330	=back	618	=back
331		619
		620	=head2 THE OpenCL::Object CLASS
		621
		622	This is the base class for all objects in the OpenCL module. The only
		623	method it implements is the C<id> method, which is only useful if you want
		624	to interface to OpenCL on the C level.
		625
		626	=over 4
		627
		628	=item $iv = $obj->id
		629
		630	OpenCL objects are represented by pointers or integers on the C level. If
		631	you want to interface to an OpenCL object directly on the C level, then
		632	you need this value, which is returned by this method. You should use an
		633	C<IV> type in your code and cast that to the correct type.
		634
		635	=cut
		636
		637	sub OpenCL::Object::id {
		638	ref $_[0] eq "SCALAR"
		639	? ${ $_[0] }
		640	: $_[0][0]
		641	}
		642
		643	=back
		644
332	=head2 THE OpenCL::Platform CLASS	645	=head2 THE OpenCL::Platform CLASS
333		646
334	=over 4	647	=over 4
335		648
336	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)	649	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)
337		650
338	Returns a list of matching OpenCL::Device objects.	651	Returns a list of matching OpenCL::Device objects.
339		652
340	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef)	653	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr)
341		654
342	Tries to create a context. Never worked for me, and you need devices explicitly anyway.	655	Tries to create a context. Never worked for me, and you need devices explicitly anyway.
343		656
344	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	657	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
345		658
346	=item $ctx = $platform->context ($properties = undef, @$devices, $notify = undef)	659	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
347		660
348	Create a new OpenCL::Context object using the given device object(s)- a	661	Create a new OpenCL::Context object using the given device object(s)- a
349	CL_CONTEXT_PLATFORM property is supplied automatically.	662	CL_CONTEXT_PLATFORM property is supplied automatically.
350		663
351	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>	664	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
…		…
359	It's best to avoid this method and use one of the following convenience	672	It's best to avoid this method and use one of the following convenience
360	wrappers.	673	wrappers.
361		674
362	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>	675	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>
363		676
		677	=item $platform->unload_compiler
		678
		679	Attempts to unload the compiler for this platform, for endless
		680	profit. Does nothing on OpenCL 1.1.
		681
		682	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clUnloadPlatformCompiler.html>
		683
364	=for gengetinfo begin platform	684	=for gengetinfo begin platform
365		685
366	=item $string = $platform->profile	686	=item $string = $platform->profile
367		687
368	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.	688	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.
…		…
653		973
654	=item @device_partition_property_exts = $device->affinity_domains_ext	974	=item @device_partition_property_exts = $device->affinity_domains_ext
655		975
656	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.	976	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.
657		977
658	=item $uint = $device->reference_count_ext	978	=item $uint = $device->reference_count_ext
659		979
660	Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT > and returns the result.	980	Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT> and returns the result.
661		981
662	=item @device_partition_property_exts = $device->partition_style_ext	982	=item @device_partition_property_exts = $device->partition_style_ext
663		983
664	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result.	984	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result.
665		985
…		…
669		989
670	=head2 THE OpenCL::Context CLASS	990	=head2 THE OpenCL::Context CLASS
671		991
672	=over 4	992	=over 4
673		993
		994	=item $prog = $ctx->build_program ($program, $options = "")
		995
		996	This convenience function tries to build the program on all devices in
		997	the context. If the build fails, then the function will C<croak> with the
		998	build log. Otherwise ti returns the program object.
		999
		1000	The C<$program> can either be a C<OpenCL::Program> object or a string
		1001	containing the program. In the latter case, a program objetc will be
		1002	created automatically.
		1003
		1004	=cut
		1005
		1006	sub OpenCL::Context::build_program {
		1007	my ($self, $prog, $options) = @_;
		1008
		1009	$prog = $self->program_with_source ($prog)
		1010	unless ref $prog;
		1011
		1012	eval { $prog->build (undef, $options); 1 }
		1013	or errno == BUILD_PROGRAM_FAILURE
		1014	or Carp::croak "OpenCL::Context->build_program: " . err2str;
		1015
		1016	# we check status for all devices
		1017	for my $dev ($self->devices) {
		1018	$prog->build_status ($dev) == BUILD_SUCCESS
		1019	or Carp::croak "Building OpenCL program for device '" . $dev->name . "' failed:\n"
		1020	. $prog->build_log ($dev);
		1021	}
		1022
		1023	$prog
		1024	}
		1025
674	=item $queue = $ctx->queue ($device, $properties)	1026	=item $queue = $ctx->queue ($device, $properties)
675		1027
676	Create a new OpenCL::Queue object from the context and the given device.	1028	Create a new OpenCL::Queue object from the context and the given device.
677		1029
678	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html>	1030	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html>
		1031
		1032	Example: create an out-of-order queue.
		1033
		1034	$queue = $ctx->queue ($device, OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE);
679		1035
680	=item $ev = $ctx->user_event	1036	=item $ev = $ctx->user_event
681		1037
682	Creates a new OpenCL::UserEvent object.	1038	Creates a new OpenCL::UserEvent object.
683		1039
…		…
693	=item $buf = $ctx->buffer_sv ($flags, $data)	1049	=item $buf = $ctx->buffer_sv ($flags, $data)
694		1050
695	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and	1051	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and
696	initialise it with the given data values.	1052	initialise it with the given data values.
697		1053
		1054	=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)
		1055
		1056	Creates a new OpenCL::Image object and optionally initialises it with
		1057	the given data values.
		1058
		1059	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>
		1060
698	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)	1061	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)
699		1062
700	Creates a new OpenCL::Image2D object and optionally initialises it with	1063	Creates a new OpenCL::Image2D object and optionally initialises it with
701	the given data values.	1064	the given data values.
702		1065
…		…
714	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given	1077	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given
715	OpenGL buffer object.	1078	OpenGL buffer object.
716		1079
717	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html	1080	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html
718		1081
		1082	=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)
		1083
		1084	Creates a new OpenCL::Image object that refers to the given OpenGL
		1085	texture object or buffer.
		1086
		1087	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html
		1088
719	=item $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)	1089	=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)
720		1090
721	Creates a new OpenCL::Image2D object that refers to the given OpenGL	1091	Creates a new OpenCL::Image2D object that refers to the given OpenGL
722	2D texture object.	1092	2D texture object.
723		1093
724	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture2D.html	1094	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture2D.html
725		1095
726	=item $ctx->gl_texture3d ($flags, $target, $miplevel, $texture)	1096	=item $img = $ctx->gl_texture3d ($flags, $target, $miplevel, $texture)
727		1097
728	Creates a new OpenCL::Image3D object that refers to the given OpenGL	1098	Creates a new OpenCL::Image3D object that refers to the given OpenGL
729	3D texture object.	1099	3D texture object.
730		1100
731	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture3D.html	1101	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture3D.html
…		…
785	=back	1155	=back
786		1156
787	=head2 THE OpenCL::Queue CLASS	1157	=head2 THE OpenCL::Queue CLASS
788		1158
789	An OpenCL::Queue represents an execution queue for OpenCL. You execute	1159	An OpenCL::Queue represents an execution queue for OpenCL. You execute
790	requests by calling their respective C<enqueue_xxx> method and waitinf for	1160	requests by calling their respective method and waiting for it to complete
791	it to complete in some way.	1161	in some way.
792		1162
793	All the enqueue methods return an event object that can be used to wait	1163	Most methods that enqueue some request return an event object that can
794	for completion, unless the method is called in void context, in which case	1164	be used to wait for completion (optionally using a callback), unless
795	no event object is created.	1165	the method is called in void context, in which case no event object is
		1166	created.
796		1167
797	They also allow you to specify any number of other event objects that this	1168	They also allow you to specify any number of other event objects that this
798	request has to wait for before it starts executing, by simply passing the	1169	request has to wait for before it starts executing, by simply passing the
799	event objects as extra parameters to the enqueue methods.	1170	event objects as extra parameters to the enqueue methods. To simplify
		1171	program design, this module ignores any C<undef> values in the list of
		1172	events. This makes it possible to code operations such as this, without
		1173	having to put a valid event object into C<$event> first:
		1174
		1175	$event = $queue->xxx (..., $event);
800		1176
801	Queues execute in-order by default, without any parallelism, so in most	1177	Queues execute in-order by default, without any parallelism, so in most
802	cases (i.e. you use only one queue) it's not necessary to wait for or	1178	cases (i.e. you use only one queue) it's not necessary to wait for or
803	create event objects.	1179	create event objects, althoguh an our of order queue is often a bit
		1180	faster.
804		1181
805	=over 4	1182	=over 4
806		1183
807	=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)	1184	=item $ev = $queue->read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)
808		1185
809	Reads data from buffer into the given string.	1186	Reads data from buffer into the given string.
810		1187
811	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>	1188	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>
812		1189
813	=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)	1190	=item $ev = $queue->write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)
814		1191
815	Writes data to buffer from the given string.	1192	Writes data to buffer from the given string.
816		1193
817	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>	1194	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>
818		1195
819	=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)	1196	=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)
820		1197
821	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>	1198	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>
822		1199
823	=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...)	1200	=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...)
824		1201
825	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html	1202	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html
826		1203
827	=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...)	1204	=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...)
828		1205
829	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html	1206	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html
830		1207
831	=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1208	=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
832		1209
833	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>	1210	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>
834		1211
835	=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...)	1212	=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
836		1213
837	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>	1214	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>
838		1215
839	=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1216	=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
840		1217
841	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>	1218	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>
842		1219
843	=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...)	1220	=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...)
844		1221
845	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>	1222	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>
846		1223
847	=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...)	1224	=item $ev = $queue->copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...)
848		1225
849	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>	1226	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>
850		1227
851	=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...)	1228	=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...)
852		1229
853	Yeah.	1230	Yeah.
854		1231
855	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.	1232	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.
856		1233
		1234	=item $ev = $queue->fill_buffer ($mem, $pattern, $offset, $size, ...)
		1235
		1236	Fills the given buffer object with repeated applications of C<$pattern>,
		1237	starting at C<$offset> for C<$size> octets.
		1238
		1239	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillBuffer.html>
		1240
		1241	=item $ev = $queue->fill_image ($img, $r, $g, $b, $a, $x, $y, $z, $width, $height, $depth, ...)
		1242
		1243	Fills the given image area with the given rgba colour components. The
		1244	components are normally floating point values between C<0> and C<1>,
		1245	except when the image channel data type is a signe dor unsigned
		1246	unnormalised format, in which case the range is determined by the format.
		1247
		1248	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillImage.html>
		1249
857	=item $ev = $queue->enqueue_task ($kernel, $wait_events...)	1250	=item $ev = $queue->task ($kernel, $wait_events...)
858		1251
859	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>	1252	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>
860		1253
861	=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...)	1254	=item $ev = $queue->nd_range_kernel ($kernel, \@global_work_offset, \@global_work_size, \@local_work_size, $wait_events...)
862		1255
863	Enqueues a kernel execution.	1256	Enqueues a kernel execution.
864		1257
865	@$global_work_size must be specified as a reference to an array of	1258	\@global_work_size must be specified as a reference to an array of
866	integers specifying the work sizes (element counts).	1259	integers specifying the work sizes (element counts).
867		1260
868	@$global_work_offset must be either C<undef> (in which case all offsets	1261	\@global_work_offset must be either C<undef> (in which case all offsets
869	are C<0>), or a reference to an array of work offsets, with the same number	1262	are C<0>), or a reference to an array of work offsets, with the same number
870	of elements as @$global_work_size.	1263	of elements as \@global_work_size.
871		1264
872	@$local_work_size must be either C<undef> (in which case the	1265	\@local_work_size must be either C<undef> (in which case the
873	implementation is supposed to choose good local work sizes), or a	1266	implementation is supposed to choose good local work sizes), or a
874	reference to an array of local work sizes, with the same number of	1267	reference to an array of local work sizes, with the same number of
875	elements as @$global_work_size.	1268	elements as \@global_work_size.
876		1269
877	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>	1270	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
878		1271
879	=item $ev = $queue->enqueue_marker ($wait_events...)
880
881	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMarker.html>
882
883	=item $ev = $queue->enqueue_acquire_gl_objects ([object, ...], $wait_events...)	1272	=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)
884		1273
885	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired	1274	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired
886	for subsequent OpenCL usage.	1275	for subsequent OpenCL usage.
887		1276
888	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>	1277	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>
889		1278
890	=item $ev = $queue->enqueue_release_gl_objects ([object, ...], $wait_events...)	1279	=item $ev = $queue->release_gl_objects ([object, ...], $wait_events...)
891		1280
892	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released	1281	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released
893	for subsequent OpenGL usage.	1282	for subsequent OpenGL usage.
894		1283
895	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>	1284	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>
896		1285
897	=item $ev = $queue->enqueue_wait_for_events ($wait_events...)	1286	=item $ev = $queue->wait_for_events ($wait_events...)
898		1287
899	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>	1288	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>
900		1289
901	=item $queue->enqueue_barrier	1290	=item $ev = $queue->marker ($wait_events...)
902		1291
		1292	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html>
		1293
		1294	=item $ev = $queue->barrier ($wait_events...)
		1295
903	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueBarrier.html>	1296	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html>
904		1297
905	=item $queue->flush	1298	=item $queue->flush
906		1299
907	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html>	1300	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html>
908		1301
…		…
1023		1416
1024	=back	1417	=back
1025		1418
1026	=head2 THE OpenCL::Image CLASS	1419	=head2 THE OpenCL::Image CLASS
1027		1420
1028	This is the superclass of all image objects - OpenCL::Image2D and OpenCL::Image3D.	1421	This is the superclass of all image objects - OpenCL::Image1D,
		1422	OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D,
		1423	OpenCL::Image2DArray and OpenCL::Image3D.
1029		1424
1030	=over 4	1425	=over 4
1031		1426
1032	=item $packed_value = $ev->image_info ($name)	1427	=item $packed_value = $image->image_info ($name)
1033		1428
1034	See C<< $platform->info >> for details.	1429	See C<< $platform->info >> for details.
1035		1430
1036	The reason this method is not called C<info> is that there already is an	1431	The reason this method is not called C<info> is that there already is an
1037	C<< ->info >> method inherited from C<OpenCL::Memory>.	1432	C<< ->info >> method inherited from C<OpenCL::Memory>.
1038		1433
1039	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>	1434	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
1040		1435
		1436	=item ($channel_order, $channel_data_type) = $image->format
		1437
		1438	Returns the channel order and type used to create the image by calling
		1439	C<clGetImageInfo> with C<CL_IMAGE_FORMAT>.
		1440
1041	=for gengetinfo begin image	1441	=for gengetinfo begin image
1042		1442
1043	=item $int = $image->element_size	1443	=item $int = $image->element_size
1044		1444
1045	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.	1445	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.
…		…
1118		1518
1119	=head2 THE OpenCL::Program CLASS	1519	=head2 THE OpenCL::Program CLASS
1120		1520
1121	=over 4	1521	=over 4
1122		1522
1123	=item $program->build ($device, $options = "")	1523	=item $program->build (\@devices = undef, $options = "", $cb->($program) = undef)
1124		1524
1125	Tries to build the program with the givne options.	1525	Tries to build the program with the given options. See also the
		1526	C<$ctx->build> convenience function.
		1527
		1528	If a callback is specified, then it will be called when compilation is
		1529	finished. Note that many OpenCL implementations block your program while
		1530	compiling whether you use a callback or not. See C<build_async> if you
		1531	want to make sure the build is done in the background.
		1532
		1533	Note that some OpenCL implementations atc up badly, and don't call the
		1534	callback in some error cases (but call it in others). This implementation
		1535	assumes the callback will always be called, and leaks memory if this is
		1536	not so. So best make sure you don't pass in invalid values.
1126		1537
1127	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>	1538	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
		1539
		1540	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
		1541
		1542	Similar to C<< ->build >>, except it starts a thread, and never fails (you
		1543	need to check the compilation status form the callback, or by polling).
1128		1544
1129	=item $packed_value = $program->build_info ($device, $name)	1545	=item $packed_value = $program->build_info ($device, $name)
1130		1546
1131	Similar to C<< $platform->info >>, but returns build info for a previous	1547	Similar to C<< $platform->info >>, but returns build info for a previous
1132	build attempt for the given device.	1548	build attempt for the given device.
…		…
1137		1553
1138	Creates an OpenCL::Kernel object out of the named C<__kernel> function in	1554	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
1139	the program.	1555	the program.
1140		1556
1141	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>	1557	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>
		1558
		1559	=item @kernels = $program->kernels_in_program
		1560
		1561	Returns all kernels successfully compiled for all devices in program.
		1562
		1563	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernelsInProgram.html
1142		1564
1143	=for gengetinfo begin program_build	1565	=for gengetinfo begin program_build
1144		1566
1145	=item $build_status = $program->build_status ($device)	1567	=item $build_status = $program->build_status ($device)
1146		1568
…		…
1268		1690
1269	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.	1691	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.
1270		1692
1271	=for gengetinfo end kernel_work_group	1693	=for gengetinfo end kernel_work_group
1272		1694
		1695	=item $kernel->setf ($format, ...)
		1696
		1697	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
		1698	way to set arguments (and with OpenCL 1.2 it might be rather slow), you
		1699	need to specify a format argument, much as with C<printf>, to tell OpenCL
		1700	what type of argument it is.
		1701
		1702	The format arguments are single letters:
		1703
		1704	c char
		1705	C unsigned char
		1706	s short
		1707	S unsigned short
		1708	i int
		1709	I unsigned int
		1710	l long
		1711	L unsigned long
		1712
		1713	h half float (0..65535)
		1714	f float
		1715	d double
		1716
		1717	z local (octet size)
		1718
		1719	m memory object (buffer or image)
		1720	a sampler
		1721	e event
		1722
		1723	Space characters in the format string are ignored.
		1724
		1725	Example: set the arguments for a kernel that expects an int, two floats, a buffer and an image.
		1726
		1727	$kernel->setf ("i ff mm", 5, 0.5, 3, $buffer, $image);
		1728
1273	=item $kernel->set_TYPE ($index, $value)	1729	=item $kernel->set_TYPE ($index, $value)
1274		1730
		1731	=item $kernel->set_char ($index, $value)
		1732
		1733	=item $kernel->set_uchar ($index, $value)
		1734
		1735	=item $kernel->set_short ($index, $value)
		1736
		1737	=item $kernel->set_ushort ($index, $value)
		1738
		1739	=item $kernel->set_int ($index, $value)
		1740
		1741	=item $kernel->set_uint ($index, $value)
		1742
		1743	=item $kernel->set_long ($index, $value)
		1744
		1745	=item $kernel->set_ulong ($index, $value)
		1746
		1747	=item $kernel->set_half ($index, $value)
		1748
		1749	=item $kernel->set_float ($index, $value)
		1750
		1751	=item $kernel->set_double ($index, $value)
		1752
		1753	=item $kernel->set_memory ($index, $value)
		1754
		1755	=item $kernel->set_buffer ($index, $value)
		1756
		1757	=item $kernel->set_image ($index, $value)
		1758
		1759	=item $kernel->set_sampler ($index, $value)
		1760
		1761	=item $kernel->set_local ($index, $value)
		1762
		1763	=item $kernel->set_event ($index, $value)
		1764
1275	This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>.	1765	This is a family of methods to set the kernel argument with the number
1276		1766	C<$index> to the give C<$value>.
1277	TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>,
1278	C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>,
1279	C<image2d>, C<image3d>, C<sampler> or C<event>.
1280		1767
1281	Chars and integers (including the half type) are specified as integers,	1768	Chars and integers (including the half type) are specified as integers,
1282	float and double as floating point values, memory/buffer/image2d/image3d	1769	float and double as floating point values, memory/buffer/image must be
1283	must be an object of that type or C<undef>, and sampler and event must be	1770	an object of that type or C<undef>, local-memory arguments are set by
1284	objects of that type.	1771	specifying the size, and sampler and event must be objects of that type.
		1772
		1773	Note that C<set_memory> works for all memory objects (all types of buffers
		1774	and images) - the main purpose of the more specific C<set_TYPE> functions
		1775	is type checking.
		1776
		1777	Setting an argument for a kernel does NOT keep a reference to the object -
		1778	for example, if you set an argument to some image object, free the image,
		1779	and call the kernel, you will run into undefined behaviour.
1285		1780
1286	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>	1781	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>
1287		1782
1288	=back	1783	=back
1289		1784
…		…
1298		1793
1299	Waits for the event to complete.	1794	Waits for the event to complete.
1300		1795
1301	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	1796	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
1302		1797
		1798	=item $ev->cb ($exec_callback_type, $callback->($event, $event_command_exec_status))
		1799
		1800	Adds a callback to the callback stack for the given event type. There is
		1801	no way to remove a callback again.
		1802
		1803	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html>
		1804
1303	=item $packed_value = $ev->info ($name)	1805	=item $packed_value = $ev->info ($name)
1304		1806
1305	See C<< $platform->info >> for details.	1807	See C<< $platform->info >> for details.
1306		1808
1307	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>	1809	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>
…		…
1367		1869
1368	=over 4	1870	=over 4
1369		1871
1370	=item $ev->set_status ($execution_status)	1872	=item $ev->set_status ($execution_status)
1371		1873
		1874	Sets the execution status of the user event. Can only be called once,
		1875	either with OpenCL::COMPLETE or a negative number as status.
		1876
1372	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>	1877	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1373		1878
1374	=back	1879	=back
1375		1880
1376	=cut	1881	=cut
1377
1378	package OpenCL;
1379
1380	use common::sense;
1381
1382	BEGIN {
1383	our $VERSION = '0.92';
1384
1385	require XSLoader;
1386	XSLoader::load (__PACKAGE__, $VERSION);
1387
1388	@OpenCL::Buffer::ISA =
1389	@OpenCL::Image::ISA = OpenCL::Memory::;
1390
1391	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
1392
1393	@OpenCL::Image2D::ISA =
1394	@OpenCL::Image3D::ISA = OpenCL::Image::;
1395
1396	@OpenCL::UserEvent::ISA = OpenCL::Event::;
1397	}
1398		1882
1399	1;	1883	1;
1400		1884
1401	=head1 AUTHOR	1885	=head1 AUTHOR
1402		1886

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Comparing OpenCL/OpenCL.pm (file contents): Revision 1.37 by root, Thu Apr 19 14:36:46 2012 UTC vs. Revision 1.62 by root, Sat Apr 28 13:33:04 2012 UTC

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Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.37 by root, Thu Apr 19 14:36:46 2012 UTC vs.
Revision 1.62 by root, Sat Apr 28 13:33:04 2012 UTC