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Revision 1.21 by root, Sun Nov 20 10:21:27 2011 UTC vs.
Revision 1.87 by root, Mon May 7 01:01:33 2012 UTC

…		…
28	specific device ("compiling and linking"), also binary programs. For each	28	specific device ("compiling and linking"), also binary programs. For each
29	kernel function in a program you can then create an OpenCL::Kernel object	29	kernel function in a program you can then create an OpenCL::Kernel object
30	which represents basically a function call with argument values.	30	which represents basically a function call with argument values.
31		31
32	OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat	32	OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat
33	memory areas, think arrays or structs) and OpenCL::Image objects (think 2d	33	memory areas, think arrays or structs) and OpenCL::Image objects (think 2D
34	or 3d array) for bulk data and input and output for kernels.	34	or 3D array) for bulk data and input and output for kernels.
35		35
36	OpenCL::Sampler objects, which are kind of like texture filter modes in	36	OpenCL::Sampler objects, which are kind of like texture filter modes in
37	OpenGL.	37	OpenGL.
38		38
39	OpenCL::Queue objects - command queues, which allow you to submit memory	39	OpenCL::Queue objects - command queues, which allow you to submit memory
…		…
43		43
44	OpenCL::Event objects are used to signal when something is complete.	44	OpenCL::Event objects are used to signal when something is complete.
45		45
46	=head2 HELPFUL RESOURCES	46	=head2 HELPFUL RESOURCES
47		47
48	The OpenCL spec used to develop this module (1.2 spec was available, but	48	The OpenCL specs used to develop this module - download these and keept
49	no implementation was available to me :).	49	hema round, they are required reference material:
50		50
51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf	51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf
		52	http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf
		53	http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf
52		54
53	OpenCL manpages:	55	OpenCL manpages:
54		56
55	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/	57	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/
		58	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/
56		59
57	If you are into UML class diagrams, the following diagram might help - if	60	If you are into UML class diagrams, the following diagram might help - if
58	not, it will be mildly cobfusing:	61	not, it will be mildly confusing (also, the class hierarchy of this module
		62	is much more fine-grained):
59		63
60	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/classDiagram.html	64	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/classDiagram.html
61		65
62	Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it	66	Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it
63	is, but at least it's free of charge:	67	is, but at least it's free of charge:
64		68
65	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf	69	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf
…		…
101		105
102	Best run this once to get a feel for the platforms and devices in your	106	Best run this once to get a feel for the platforms and devices in your
103	system.	107	system.
104		108
105	for my $platform (OpenCL::platforms) {	109	for my $platform (OpenCL::platforms) {
106	printf "platform: %s\n", $platform->info (OpenCL::PLATFORM_NAME);	110	printf "platform: %s\n", $platform->name;
107	printf "extensions: %s\n", $platform->info (OpenCL::PLATFORM_EXTENSIONS);	111	printf "extensions: %s\n", $platform->extensions;
108	for my $device ($platform->devices) {	112	for my $device ($platform->devices) {
109	printf "+ device: %s\n", $device->info (OpenCL::DEVICE_NAME);	113	printf "+ device: %s\n", $device->name;
110	my $ctx = $device->context;	114	my $ctx = $platform->context (undef, [$device]);
111	# do stuff	115	# do stuff
112	}	116	}
113	}	117	}
114		118
115	=head2 Get a useful context and a command queue.	119	=head2 Get a useful context and a command queue.
…		…
138	=head2 Create a buffer with some predefined data, read it back synchronously,	142	=head2 Create a buffer with some predefined data, read it back synchronously,
139	then asynchronously.	143	then asynchronously.
140		144
141	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");	145	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");
142		146
143	$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data);	147	$queue->read_buffer ($buf, 1, 1, 3, my $data);
144	print "$data\n";	148	print "$data\n";
145		149
146	my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data);	150	my $ev = $queue->read_buffer ($buf, 0, 1, 3, my $data);
147	$ev->wait;	151	$ev->wait;
148	print "$data\n"; # prints "elm"	152	print "$data\n"; # prints "elm"
149		153
150	=head2 Create and build a program, then create a kernel out of one of its	154	=head2 Create and build a program, then create a kernel out of one of its
151	functions.	155	functions.
152		156
153	my $src = '	157	my $src = '
154	__kernel void	158	kernel void
155	squareit (__global float *input, __global float *output)	159	squareit (global float *input, global float *output)
156	{	160	{
157	$id = get_global_id (0);	161	$id = get_global_id (0);
158	output [id] = input [id] * input [id];	162	output [id] = input [id] * input [id];
159	}	163	}
160	';	164	';
161		165
162	my $prog = $ctx->program_with_source ($src);	166	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 $prog->build_info ($dev, OpenCL::PROGRAM_BUILD_LOG);
167
168	my $kernel = $prog->kernel ("squareit");	167	my $kernel = $prog->kernel ("squareit");
169		168
170	=head2 Create some input and output float buffers, then call the	169	=head2 Create some input and output float buffers, then call the
171	'squareit' kernel on them.	170	'squareit' kernel on them.
172		171
…		…
176	# set buffer	175	# set buffer
177	$kernel->set_buffer (0, $input);	176	$kernel->set_buffer (0, $input);
178	$kernel->set_buffer (1, $output);	177	$kernel->set_buffer (1, $output);
179		178
180	# execute it for all 4 numbers	179	# execute it for all 4 numbers
181	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	180	$queue->nd_range_kernel ($kernel, undef, [4], undef);
182		181
183	# enqueue a synchronous read	182	# enqueue a synchronous read
184	$queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	183	$queue->read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
185		184
186	# print the results:	185	# print the results:
187	printf "%s\n", join ", ", unpack "f*", $data;	186	printf "%s\n", join ", ", unpack "f*", $data;
188		187
189	=head2 The same enqueue operations as before, but assuming an out-of-order queue,	188	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
190	showing off barriers.	189	showing off barriers.
191		190
192	# execute it for all 4 numbers	191	# execute it for all 4 numbers
193	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	192	$queue->nd_range_kernel ($kernel, undef, [4], undef);
194		193
195	# enqueue a barrier to ensure in-order execution	194	# enqueue a barrier to ensure in-order execution
196	$queue->enqueue_barrier;	195	$queue->barrier;
197		196
198	# enqueue an async read	197	# enqueue an async read
199	$queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	198	$queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
200		199
201	# wait for all requests to finish	200	# wait for all requests to finish
202	$queue->finish;	201	$queue->finish;
203		202
204	=head2 The same enqueue operations as before, but assuming an out-of-order queue,	203	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
205	showing off event objects and wait lists.	204	showing off event objects and wait lists.
206		205
207	# execute it for all 4 numbers	206	# execute it for all 4 numbers
208	my $ev = $queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	207	my $ev = $queue->nd_range_kernel ($kernel, undef, [4], undef);
209		208
210	# enqueue an async read	209	# enqueue an async read
211	$ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);	210	$ev = $queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);
212		211
213	# wait for the last event to complete	212	# wait for the last event to complete
214	$ev->wait;	213	$ev->wait;
		214
		215	=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia
		216	set flight effect.
		217
		218	This is quite a long example to get you going - you can also download it
		219	from L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>.
		220
		221	use OpenGL ":all";
		222	use OpenCL;
		223
		224	my $S = $ARGV[0] || 256; # window/texture size, smaller is faster
		225
		226	# open a window and create a gl texture
		227	OpenGL::glpOpenWindow width => $S, height => $S;
		228	my $texid = glGenTextures_p 1;
		229	glBindTexture GL_TEXTURE_2D, $texid;
		230	glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, $S, $S, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0;
		231
		232	# find and use the first opencl device that let's us get a shared opengl context
		233	my $platform;
		234	my $dev;
		235	my $ctx;
		236
		237	for (OpenCL::platforms) {
		238	$platform = $_;
		239	for ($platform->devices) {
		240	$dev = $_;
		241	$ctx = $platform->context ([OpenCL::GLX_DISPLAY_KHR, undef, OpenCL::GL_CONTEXT_KHR, undef], [$dev])
		242	and last;
		243	}
		244	}
		245
		246	$ctx
		247	or die "cannot find suitable OpenCL device\n";
		248
		249	my $queue = $ctx->queue ($dev);
		250
		251	# now attach an opencl image2d object to the opengl texture
		252	my $tex = $ctx->gl_texture2d (OpenCL::MEM_WRITE_ONLY, GL_TEXTURE_2D, 0, $texid);
		253
		254	# now the boring opencl code
		255	my $src = <<EOF;
		256	kernel void
		257	juliatunnel (write_only image2d_t img, float time)
		258	{
		259	int2 xy = (int2)(get_global_id (0), get_global_id (1));
		260	float2 p = convert_float2 (xy) / $S.f * 2.f - 1.f;
		261
		262	float2 m = (float2)(1.f, p.y) / fabs (p.x); // tunnel
		263	m.x = fabs (fmod (m.x + time * 0.05f, 4.f) - 2.f);
		264
		265	float2 z = m;
		266	float2 c = (float2)(sin (time * 0.01133f), cos (time * 0.02521f));
		267
		268	for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i) // standard julia
		269	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
		270
		271	float3 colour = (float3)(z.x, z.y, atan2 (z.y, z.x));
		272	write_imagef (img, xy, (float4)(colour * p.x * p.x, 1.));
		273	}
		274	EOF
		275
		276	my $prog = $ctx->build_program ($src);
		277	my $kernel = $prog->kernel ("juliatunnel");
		278
		279	# program compiled, kernel ready, now draw and loop
		280
		281	for (my $time; ; ++$time) {
		282	# acquire objects from opengl
		283	$queue->acquire_gl_objects ([$tex]);
		284
		285	# configure and run our kernel
		286	$kernel->setf ("mf", $tex, $time*2); # mf = memory object, float
		287	$queue->nd_range_kernel ($kernel, undef, [$S, $S], undef);
		288
		289	# release objects to opengl again
		290	$queue->release_gl_objects ([$tex]);
		291
		292	# wait
		293	$queue->finish;
		294
		295	# now draw the texture, the defaults should be all right
		296	glTexParameterf GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST;
		297
		298	glEnable GL_TEXTURE_2D;
		299	glBegin GL_QUADS;
		300	glTexCoord2f 0, 1; glVertex3i -1, -1, -1;
		301	glTexCoord2f 0, 0; glVertex3i 1, -1, -1;
		302	glTexCoord2f 1, 0; glVertex3i 1, 1, -1;
		303	glTexCoord2f 1, 1; glVertex3i -1, 1, -1;
		304	glEnd;
		305
		306	glXSwapBuffers;
		307
		308	select undef, undef, undef, 1/60;
		309	}
		310
		311	=head2 How to modify the previous example to not rely on GL sharing.
		312
		313	For those poor souls with only a sucky CPU OpenCL implementation, you
		314	currently have to read the image into some perl scalar, and then modify a
		315	texture or use glDrawPixels or so).
		316
		317	First, when you don't need gl sharing, you can create the context much simpler:
		318
		319	$ctx = $platform->context (undef, [$dev])
		320
		321	To use a texture, you would modify the above example by creating an
		322	OpenCL::Image manually instead of deriving it from a texture:
		323
		324	my $tex = $ctx->image2d (OpenCL::MEM_WRITE_ONLY, OpenCL::RGBA, OpenCL::UNORM_INT8, $S, $S);
		325
		326	And in the draw loop, intead of acquire_gl_objects/release_gl_objects, you
		327	would read the image2d after the kernel has written it:
		328
		329	$queue->read_image ($tex, 0, 0, 0, 0, $S, $S, 1, 0, 0, my $data);
		330
		331	And then you would upload the pixel data to the texture (or use glDrawPixels):
		332
		333	glTexSubImage2D_s GL_TEXTURE_2D, 0, 0, 0, $S, $S, GL_RGBA, GL_UNSIGNED_BYTE, $data;
		334
		335	The fully modified example can be found at
		336	L<http://cvs.schmorp.de/OpenCL/examples/juliaflight-nosharing>.
		337
		338	=head2 Julia sets look soooo 80ies.
		339
		340	Then colour them differently, e.g. using orbit traps! Replace the loop and
		341	colour calculation from the previous examples by this:
		342
		343	float2 dm = (float2)(1.f, 1.f);
		344
		345	for (int i = 0; i < 25; ++i)
		346	{
		347	z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c;
		348	dm = fmin (dm, (float2)(fabs (dot (z, z) - 1.f), fabs (z.x - 1.f)));
		349	}
		350
		351	float3 colour = (float3)(dm.x * dm.y, dm.x * dm.y, dm.x);
		352
		353	Also try C<-10.f> instead of C<-1.f>.
215		354
216	=head1 DOCUMENTATION	355	=head1 DOCUMENTATION
217		356
218	=head2 BASIC CONVENTIONS	357	=head2 BASIC CONVENTIONS
219		358
…		…
241	=item * Structures are often specified by flattening out their components	380	=item * Structures are often specified by flattening out their components
242	as with short vectors, and returned as arrayrefs.	381	as with short vectors, and returned as arrayrefs.
243		382
244	=item * When enqueuing commands, the wait list is specified by adding	383	=item * When enqueuing commands, the wait list is specified by adding
245	extra arguments to the function - anywhere a C<$wait_events...> argument	384	extra arguments to the function - anywhere a C<$wait_events...> argument
246	is documented this can be any number of event objects.	385	is documented this can be any number of event objects. As an extsnion
		386	implemented by this module, C<undef> values will be ignored in the event
		387	list.
247		388
248	=item * When enqueuing commands, if the enqueue method is called in void	389	=item * When enqueuing commands, if the enqueue method is called in void
249	context, no event is created. In all other contexts an event is returned	390	context, no event is created. In all other contexts an event is returned
250	by the method.	391	by the method.
251		392
252	=item * This module expects all functions to return C<CL_SUCCESS>. If any	393	=item * This module expects all functions to return C<OpenCL::SUCCESS>. If any
253	other status is returned the function will throw an exception, so you	394	other status is returned the function will throw an exception, so you
254	don't normally have to to any error checking.	395	don't normally have to to any error checking.
255		396
256	=back	397	=back
		398
		399	=head2 CONSTANTS
		400
		401	All C<CL_xxx> constants that this module supports are always available
		402	in the C<OpenCL> namespace as C<OpenCL::xxx> (i.e. without the C<CL_>
		403	prefix). Constants which are not defined in the header files used during
		404	compilation, or otherwise are not available, will have the value C<0> (in
		405	some cases, this will make them indistinguishable from real constants,
		406	sorry).
		407
		408	The latest version of this module knows and exports the constants
		409	listed in L<http://cvs.schmorp.de/OpenCL/constiv.h>.
		410
		411	=head2 OPENCL 1.1 VS. OPENCL 1.2
		412
		413	This module supports both OpenCL version 1.1 and 1.2, although the OpenCL
		414	1.2 interface hasn't been tested much for lack of availability of an
		415	actual implementation.
		416
		417	Every function or method in this manual page that interfaces to a
		418	particular OpenCL function has a link to the its C manual page.
		419
		420	If the link contains a F<1.1>, then this function is an OpenCL 1.1
		421	function. Most but not all also exist in OpenCL 1.2, and this module
		422	tries to emulate the missing ones for you, when told to do so at
		423	compiletime. You can check whether a function was removed in OpenCL 1.2 by
		424	replacing the F<1.1> component in the URL by F<1.2>.
		425
		426	If the link contains a F<1.2>, then this is a OpenCL 1.2-only
		427	function. Even if the module was compiled with OpenCL 1.2 header files
		428	and has an 1.2 OpenCL library, calling such a function on a platform that
		429	doesn't implement 1.2 causes undefined behaviour, usually a crash (But
		430	this is not guaranteed).
		431
		432	You can find out whether this module was compiled to prefer 1.1
		433	functionality by ooking at C<OpenCL::PREFER_1_1> - if it is true, then
		434	1.1 functions generally are implemented using 1.1 OpenCL functions. If it
		435	is false, then 1.1 functions missing from 1.2 are emulated by calling 1.2
		436	fucntions.
		437
		438	This is a somewhat sorry state of affairs, but the Khronos group choose to
		439	make every release of OpenCL source and binary incompatible with previous
		440	releases.
257		441
258	=head2 PERL AND OPENCL TYPES	442	=head2 PERL AND OPENCL TYPES
259		443
260	This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack	444	This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack
261	format equivalents:	445	format equivalents:
…		…
271	ulong IV - Q	455	ulong IV - Q
272	float NV float f	456	float NV float f
273	half IV ushort S	457	half IV ushort S
274	double NV double d	458	double NV double d
275		459
		460	=head2 GLX SUPPORT
		461
		462	Due to the sad state that OpenGL support is in in Perl (mostly the OpenGL
		463	module, which has little to no documentation and has little to no support
		464	for glX), this module, as a special extension, treats context creation
		465	properties C<OpenCL::GLX_DISPLAY_KHR> and C<OpenCL::GL_CONTEXT_KHR>
		466	specially: If either or both of these are C<undef>, then the OpenCL
		467	module tries to dynamically resolve C<glXGetCurrentDisplay> and
		468	C<glXGetCurrentContext>, call these functions and use their return values
		469	instead.
		470
		471	For this to work, the OpenGL library must be loaded, a GLX context must
		472	have been created and be made current, and C<dlsym> must be available and
		473	capable of finding the function via C<RTLD_DEFAULT>.
		474
		475	=head2 EVENT SYSTEM
		476
		477	OpenCL can generate a number of (potentially) asynchronous events, for
		478	example, after compiling a program, to signal a context-related error or,
		479	perhaps most important, to signal completion of queued jobs (by setting
		480	callbacks on OpenCL::Event objects).
		481
		482	The OpenCL module converts all these callbacks into events - you can
		483	still register callbacks, but they are not executed when your OpenCL
		484	implementation calls the actual callback, but only later. Therefore, none
		485	of the limitations of OpenCL callbacks apply to the perl implementation:
		486	it is perfectly safe to make blocking operations from event callbacks, and
		487	enqueued operations don't need to be flushed.
		488
		489	To facilitate this, this module maintains an event queue - each
		490	time an asynchronous event happens, it is queued, and perl will be
		491	interrupted. This is implemented via the L<Async::Interrupt> module. In
		492	addition, this module has L<AnyEvent> support, so it can seamlessly
		493	integrate itself into many event loops.
		494
		495	Since L<Async::Interrupt> is a bit hard to understand, here are some case examples:
		496
		497	=head3 Don't use callbacks.
		498
		499	When your program never uses any callbacks, then there will never be any
		500	notifications you need to take care of, and therefore no need to worry
		501	about all this.
		502
		503	You can achieve a great deal by explicitly waiting for events, or using
		504	barriers and flush calls. In many programs, there is no need at all to
		505	tinker with asynchronous events.
		506
		507	=head3 Use AnyEvent
		508
		509	This module automatically registers a watcher that invokes all outstanding
		510	event callbacks when AnyEvent is initialised (and block asynchronous
		511	interruptions). Using this mode of operations is the safest and most
		512	recommended one.
		513
		514	To use this, simply use AnyEvent and this module normally, make sure you
		515	have an event loop running:
		516
		517	use Gtk2 -init;
		518	use AnyEvent;
		519
		520	# initialise AnyEvent, by creating a watcher, or:
		521	AnyEvent::detect;
		522
		523	my $e = $queue->marker;
		524	$e->cb (sub {
		525	warn "opencl is finished\n";
		526	})
		527
		528	main Gtk2;
		529
		530	Note that this module will not initialise AnyEvent for you. Before
		531	AnyEvent is initialised, the module will asynchronously interrupt perl
		532	instead. To avoid any surprises, it's best to explicitly initialise
		533	AnyEvent.
		534
		535	You can temporarily enable asynchronous interruptions (see next paragraph)
		536	by calling C<$OpenCL::INTERRUPT->unblock> and disable them again by
		537	calling C<$OpenCL::INTERRUPT->block>.
		538
		539	=head3 Let yourself be interrupted at any time
		540
		541	This mode is the default unless AnyEvent is loaded and initialised. In
		542	this mode, OpenCL asynchronously interrupts a running perl program. The
		543	emphasis is on both I<asynchronously> and I<running> here.
		544
		545	Asynchronously means that perl might execute your callbacks at any
		546	time. For example, in the following code (I<THAT YOU SHOULD NOT COPY>),
		547	the C<until> loop following the marker call will be interrupted by the
		548	callback:
		549
		550	my $e = $queue->marker;
		551	my $flag;
		552	$e->cb (sub { $flag = 1 });
		553	1 until $flag;
		554	# $flag is now 1
		555
		556	The reason why you shouldn't blindly copy the above code is that
		557	busy waiting is a really really bad thing, and really really bad for
		558	performance.
		559
		560	While at first this asynchronous business might look exciting, it can be
		561	really hard, because you need to be prepared for the callback code to be
		562	executed at any time, which limits the amount of things the callback code
		563	can do safely.
		564
		565	This can be mitigated somewhat by using C<<
		566	$OpenCL::INTERRUPT->scope_block >> (see the L<Async::Interrupt>
		567	documentation for details).
		568
		569	The other problem is that your program must be actively I<running> to be
		570	interrupted. When you calculate stuff, your program is running. When you
		571	hang in some C functions or other block execution (by calling C<sleep>,
		572	C<select>, running an event loop and so on), your program is waiting, not
		573	running.
		574
		575	One way around that would be to attach a read watcher to your event loop,
		576	listening for events on C<< $OpenCL::INTERRUPT->pipe_fileno >>, using a
		577	dummy callback (C<sub { }>) to temporarily execute some perl code.
		578
		579	That is then awfully close to using the built-in AnyEvent support above,
		580	though, so consider that one instead.
		581
		582	=head3 Be creative
		583
		584	OpenCL exports the L<Async::Interrupt> object it uses in the global
		585	variable C<$OpenCL::INTERRUPT>. You can configure it in any way you like.
		586
		587	So if you want to feel like a real pro, err, wait, if you feel no risk
		588	menas no fun, you can experiment by implementing your own mode of
		589	operations.
		590
		591	=cut
		592
		593	package OpenCL;
		594
		595	use common::sense;
		596	use Carp ();
		597	use Async::Interrupt ();
		598
		599	our $POLL_FUNC; # set by XS
		600
		601	BEGIN {
		602	our $VERSION = '1.01';
		603
		604	require XSLoader;
		605	XSLoader::load (__PACKAGE__, $VERSION);
		606
		607	@OpenCL::Platform::ISA =
		608	@OpenCL::Device::ISA =
		609	@OpenCL::Context::ISA =
		610	@OpenCL::Queue::ISA =
		611	@OpenCL::Memory::ISA =
		612	@OpenCL::Sampler::ISA =
		613	@OpenCL::Program::ISA =
		614	@OpenCL::Kernel::ISA =
		615	@OpenCL::Event::ISA = OpenCL::Object::;
		616
		617	@OpenCL::SubDevice::ISA = OpenCL::Device::;
		618
		619	@OpenCL::Buffer::ISA =
		620	@OpenCL::Image::ISA = OpenCL::Memory::;
		621
		622	@OpenCL::BufferObj::ISA = OpenCL::Buffer::;
		623
		624	@OpenCL::Image2D::ISA =
		625	@OpenCL::Image3D::ISA =
		626	@OpenCL::Image2DArray::ISA =
		627	@OpenCL::Image1D::ISA =
		628	@OpenCL::Image1DArray::ISA =
		629	@OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
		630
		631	@OpenCL::UserEvent::ISA = OpenCL::Event::;
		632
		633	@OpenCL::MappedBuffer::ISA =
		634	@OpenCL::MappedImage::ISA = OpenCL::Mapped::;
		635	}
		636
276	=head2 THE OpenCL PACKAGE	637	=head2 THE OpenCL PACKAGE
277		638
278	=over 4	639	=over 4
279		640
280	=item $int = OpenCL::errno	641	=item $int = OpenCL::errno
281		642
282	The last error returned by a function - it's only valid after an error occured	643	The last error returned by a function - it's only valid after an error occured
283	and before calling another OpenCL function.	644	and before calling another OpenCL function.
284		645
285	=item $str = OpenCL::err2str $errval	646	=item $str = OpenCL::err2str [$errval]
286		647
287	Comverts an error value into a human readable string.	648	Converts an error value into a human readable string. If no error value is
		649	given, then the last error will be used (as returned by OpenCL::errno).
		650
		651	The latest version of this module knows the error constants
		652	listed in L<http://cvs.schmorp.de/OpenCL/errstr.h>.
288		653
289	=item $str = OpenCL::enum2str $enum	654	=item $str = OpenCL::enum2str $enum
290		655
291	Converts most enum values (inof parameter names, image format constants,	656	Converts most enum values (of parameter names, image format constants,
292	object types, addressing and filter modes, command types etc.) into a	657	object types, addressing and filter modes, command types etc.) into a
293	human readbale string. When confronted with some random integer it can be	658	human readable string. When confronted with some random integer it can be
294	very helpful to pass it through this function to maybe get some readable	659	very helpful to pass it through this function to maybe get some readable
295	string out of it.	660	string out of it.
296		661
		662	The latest version of this module knows the enumaration constants
		663	listed in L<http://cvs.schmorp.de/OpenCL/enumstr.h>.
		664
297	=item @platforms = OpenCL::platforms	665	=item @platforms = OpenCL::platforms
298		666
299	Returns all available OpenCL::Platform objects.	667	Returns all available OpenCL::Platform objects.
300		668
301	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>	669	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
302		670
303	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef	671	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr
304		672
305	Tries to create a context from a default device and platform - never worked for me.	673	Tries to create a context from a default device and platform type - never worked for me.
		674	Consider using C<< $platform->context_from_type >> instead.
		675
		676	type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU, OpenCL::DEVICE_TYPE_GPU,
		677	OpenCL::DEVICE_TYPE_ACCELERATOR, OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
306		678
307	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	679	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
308		680
		681	=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
		682
		683	Create a new OpenCL::Context object using the given device object(s).
		684	Consider using C<< $platform->context >> instead.
		685
		686	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
		687
309	=item OpenCL::wait_for_events $wait_events...	688	=item OpenCL::wait_for_events $wait_events...
310		689
311	Waits for all events to complete.	690	Waits for all events to complete.
312		691
313	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	692	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
314		693
		694	=item OpenCL::poll
		695
		696	Checks if there are any outstanding events (see L<EVENT SYSTEM>) and
		697	invokes their callbacks.
		698
		699	=item $OpenCL::INTERRUPT
		700
		701	The L<Async::Interrupt> object used to signal asynchronous events (see
		702	L<EVENT SYSTEM>).
		703
		704	=cut
		705
		706	our $INTERRUPT = new Async::Interrupt c_cb => [$POLL_FUNC, 0];
		707
		708	&_eq_initialise ($INTERRUPT->signal_func);
		709
		710	=item $OpenCL::WATCHER
		711
		712	The L<AnyEvent> watcher object used to watch for asynchronous events (see
		713	L<EVENT SYSTEM>). This variable is C<undef> until L<AnyEvent> has been
		714	loaded I<and> initialised (e.g. by calling C<AnyEvent::detect>).
		715
		716	=cut
		717
		718	our $WATCHER;
		719
		720	sub _init_anyevent {
		721	$INTERRUPT->block;
		722	$WATCHER = AE::io ($INTERRUPT->pipe_fileno, 0, sub { $INTERRUPT->handle });
		723	}
		724
		725	if (defined $AnyEvent::MODEL) {
		726	_init_anyevent;
		727	} else {
		728	push @AnyEvent::post_detect, \&_init_anyevent;
		729	}
		730
315	=back	731	=back
316		732
		733	=head2 THE OpenCL::Object CLASS
		734
		735	This is the base class for all objects in the OpenCL module. The only
		736	method it implements is the C<id> method, which is only useful if you want
		737	to interface to OpenCL on the C level.
		738
		739	=over 4
		740
		741	=item $iv = $obj->id
		742
		743	OpenCL objects are represented by pointers or integers on the C level. If
		744	you want to interface to an OpenCL object directly on the C level, then
		745	you need this value, which is returned by this method. You should use an
		746	C<IV> type in your code and cast that to the correct type.
		747
		748	=cut
		749
		750	sub OpenCL::Object::id {
		751	ref $_[0] eq "SCALAR"
		752	? ${ $_[0] }
		753	: $_[0][0]
		754	}
		755
		756	=back
		757
317	=head2 THE OpenCL::Platform CLASS	758	=head2 THE OpenCL::Platform CLASS
318		759
319	=over 4	760	=over 4
320		761
321	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)	762	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)
322		763
323	Returns a list of matching OpenCL::Device objects.	764	Returns a list of matching OpenCL::Device objects.
324		765
325	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef)	766	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr)
326		767
327	Tries to create a context. Never worked for me, and you need devices explitly anyway.	768	Tries to create a context. Never worked for me, and you need devices explicitly anyway.
328		769
329	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>	770	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
330		771
331	=item $ctx = $device->context ($properties = undef, @$devices, $notify = undef)	772	=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
332		773
333	Create a new OpenCL::Context object using the given device object(s)- a	774	Create a new OpenCL::Context object using the given device object(s)- a
334	CL_CONTEXT_PLATFORM property is supplied automatically.	775	OpenCL::CONTEXT_PLATFORM property is supplied automatically.
335		776
336	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>	777	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
337		778
338	=item $packed_value = $platform->info ($name)	779	=item $packed_value = $platform->info ($name)
339		780
340	Calls C<clGetPlatformInfo> and returns the packed, raw value - for	781	Calls C<clGetPlatformInfo> and returns the packed, raw value - for
341	strings, this will be the string, for other values you probably need to	782	strings, this will be the string (possibly including terminating \0), for
342	use the correct C<unpack>.	783	other values you probably need to use the correct C<unpack>.
343		784
344	It's best to avoid this method and use one of the predefined C<get_*>	785	It's best to avoid this method and use one of the following convenience
345	methods.	786	wrappers.
346		787
347	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>	788	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>
348		789
		790	=item $platform->unload_compiler
		791
		792	Attempts to unload the compiler for this platform, for endless
		793	profit. Does nothing on OpenCL 1.1.
		794
		795	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clUnloadPlatformCompiler.html>
		796
349	=for gengetinfo begin platform	797	=for gengetinfo begin platform
350		798
351
352	=item $string = $platform->profile	799	=item $string = $platform->profile
353		800
354	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result(s).	801	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_PROFILE> and returns the result.
355		802
356	=item $string = $platform->version	803	=item $string = $platform->version
357		804
358	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result(s).	805	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VERSION> and returns the result.
359		806
360	=item $string = $platform->name	807	=item $string = $platform->name
361		808
362	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result(s).	809	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_NAME> and returns the result.
363		810
364	=item $string = $platform->vendor	811	=item $string = $platform->vendor
365		812
366	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result(s).	813	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VENDOR> and returns the result.
367		814
368	=item $string = $platform->extensions	815	=item $string = $platform->extensions
369		816
370	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result(s).	817	Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_EXTENSIONS> and returns the result.
371		818
372	=for gengetinfo end platform	819	=for gengetinfo end platform
373		820
374	=back	821	=back
375		822
…		…
379		826
380	=item $packed_value = $device->info ($name)	827	=item $packed_value = $device->info ($name)
381		828
382	See C<< $platform->info >> for details.	829	See C<< $platform->info >> for details.
383		830
		831	type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU,
		832	OpenCL::DEVICE_TYPE_GPU, OpenCL::DEVICE_TYPE_ACCELERATOR,
		833	OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
		834
		835	fp_config: OpenCL::FP_DENORM, OpenCL::FP_INF_NAN, OpenCL::FP_ROUND_TO_NEAREST,
		836	OpenCL::FP_ROUND_TO_ZERO, OpenCL::FP_ROUND_TO_INF, OpenCL::FP_FMA,
		837	OpenCL::FP_SOFT_FLOAT, OpenCL::FP_CORRECTLY_ROUNDED_DIVIDE_SQRT.
		838
		839	mem_cache_type: OpenCL::NONE, OpenCL::READ_ONLY_CACHE, OpenCL::READ_WRITE_CACHE.
		840
		841	local_mem_type: OpenCL::LOCAL, OpenCL::GLOBAL.
		842
		843	exec_capabilities: OpenCL::EXEC_KERNEL, OpenCL::EXEC_NATIVE_KERNEL.
		844
		845	command_queue_properties: OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE,
		846	OpenCL::QUEUE_PROFILING_ENABLE.
		847
		848	partition_properties: OpenCL::DEVICE_PARTITION_EQUALLY,
		849	OpenCL::DEVICE_PARTITION_BY_COUNTS, OpenCL::DEVICE_PARTITION_BY_COUNTS_LIST_END,
		850	OpenCL::DEVICE_PARTITION_BY_AFFINITY_DOMAIN.
		851
		852	affinity_domain: OpenCL::DEVICE_AFFINITY_DOMAIN_NUMA,
		853	OpenCL::DEVICE_AFFINITY_DOMAIN_L4_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L3_CACHE,
		854	OpenCL::DEVICE_AFFINITY_DOMAIN_L2_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L1_CACHE,
		855	OpenCL::DEVICE_AFFINITY_DOMAIN_NEXT_PARTITIONABLE.
		856
384	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>	857	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>
385		858
		859	=item @devices = $device->sub_devices (\@properties)
		860
		861	Creates OpencL::SubDevice objects by partitioning an existing device.
		862
		863	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateSubDevices.html>
		864
386	=for gengetinfo begin device	865	=for gengetinfo begin device
387		866
388
389	=item $device_type = $device->type	867	=item $device_type = $device->type
390		868
391	Calls C<clGetDeviceInfo> with C<CL_DEVICE_TYPE> and returns the result(s).	869	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_TYPE> and returns the result.
392		870
393	=item $uint = $device->vendor_id	871	=item $uint = $device->vendor_id
394		872
395	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR_ID> and returns the result(s).	873	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR_ID> and returns the result.
396		874
397	=item $uint = $device->max_compute_units	875	=item $uint = $device->max_compute_units
398		876
399	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_COMPUTE_UNITS> and returns the result(s).	877	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_COMPUTE_UNITS> and returns the result.
400		878
401	=item $uint = $device->max_work_item_dimensions	879	=item $uint = $device->max_work_item_dimensions
402		880
403	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result(s).	881	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.
404		882
405	=item $int = $device->max_work_group_size	883	=item $int = $device->max_work_group_size
406		884
407	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_GROUP_SIZE> and returns the result(s).	885	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.
408		886
409	=item @ints = $device->max_work_item_sizes	887	=item @ints = $device->max_work_item_sizes
410		888
411	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_SIZES> and returns the result(s).	889	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.
412		890
413	=item $uint = $device->preferred_vector_width_char	891	=item $uint = $device->preferred_vector_width_char
414		892
415	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result(s).	893	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.
416		894
417	=item $uint = $device->preferred_vector_width_short	895	=item $uint = $device->preferred_vector_width_short
418		896
419	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result(s).	897	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.
420		898
421	=item $uint = $device->preferred_vector_width_int	899	=item $uint = $device->preferred_vector_width_int
422		900
423	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result(s).	901	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.
424		902
425	=item $uint = $device->preferred_vector_width_long	903	=item $uint = $device->preferred_vector_width_long
426		904
427	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result(s).	905	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.
428		906
429	=item $uint = $device->preferred_vector_width_float	907	=item $uint = $device->preferred_vector_width_float
430		908
431	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result(s).	909	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.
432		910
433	=item $uint = $device->preferred_vector_width_double	911	=item $uint = $device->preferred_vector_width_double
434		912
435	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result(s).	913	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.
436		914
437	=item $uint = $device->max_clock_frequency	915	=item $uint = $device->max_clock_frequency
438		916
439	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CLOCK_FREQUENCY> and returns the result(s).	917	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.
440		918
441	=item $bitfield = $device->address_bits	919	=item $bitfield = $device->address_bits
442		920
443	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ADDRESS_BITS> and returns the result(s).	921	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ADDRESS_BITS> and returns the result.
444		922
445	=item $uint = $device->max_read_image_args	923	=item $uint = $device->max_read_image_args
446		924
447	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_READ_IMAGE_ARGS> and returns the result(s).	925	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.
448		926
449	=item $uint = $device->max_write_image_args	927	=item $uint = $device->max_write_image_args
450		928
451	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result(s).	929	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.
452		930
453	=item $ulong = $device->max_mem_alloc_size	931	=item $ulong = $device->max_mem_alloc_size
454		932
455	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result(s).	933	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.
456		934
457	=item $int = $device->image2d_max_width	935	=item $int = $device->image2d_max_width
458		936
459	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_WIDTH> and returns the result(s).	937	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.
460		938
461	=item $int = $device->image2d_max_height	939	=item $int = $device->image2d_max_height
462		940
463	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result(s).	941	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.
464		942
465	=item $int = $device->image3d_max_width	943	=item $int = $device->image3d_max_width
466		944
467	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_WIDTH> and returns the result(s).	945	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.
468		946
469	=item $int = $device->image3d_max_height	947	=item $int = $device->image3d_max_height
470		948
471	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result(s).	949	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.
472		950
473	=item $int = $device->image3d_max_depth	951	=item $int = $device->image3d_max_depth
474		952
475	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_DEPTH> and returns the result(s).	953	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.
476		954
477	=item $uint = $device->image_support	955	=item $uint = $device->image_support
478		956
479	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE_SUPPORT> and returns the result(s).	957	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE_SUPPORT> and returns the result.
480		958
481	=item $int = $device->max_parameter_size	959	=item $int = $device->max_parameter_size
482		960
483	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_PARAMETER_SIZE> and returns the result(s).	961	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_PARAMETER_SIZE> and returns the result.
484		962
485	=item $uint = $device->max_samplers	963	=item $uint = $device->max_samplers
486		964
487	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_SAMPLERS> and returns the result(s).	965	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_SAMPLERS> and returns the result.
488		966
489	=item $uint = $device->mem_base_addr_align	967	=item $uint = $device->mem_base_addr_align
490		968
491	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result(s).	969	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.
492		970
493	=item $uint = $device->min_data_type_align_size	971	=item $uint = $device->min_data_type_align_size
494		972
495	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result(s).	973	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.
496		974
497	=item $device_fp_config = $device->single_fp_config	975	=item $device_fp_config = $device->single_fp_config
498		976
499	Calls C<clGetDeviceInfo> with C<CL_DEVICE_SINGLE_FP_CONFIG> and returns the result(s).	977	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_SINGLE_FP_CONFIG> and returns the result.
500		978
501	=item $device_mem_cache_type = $device->global_mem_cache_type	979	=item $device_mem_cache_type = $device->global_mem_cache_type
502		980
503	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result(s).	981	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.
504		982
505	=item $uint = $device->global_mem_cacheline_size	983	=item $uint = $device->global_mem_cacheline_size
506		984
507	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result(s).	985	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.
508		986
509	=item $ulong = $device->global_mem_cache_size	987	=item $ulong = $device->global_mem_cache_size
510		988
511	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result(s).	989	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.
512		990
513	=item $ulong = $device->global_mem_size	991	=item $ulong = $device->global_mem_size
514		992
515	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_SIZE> and returns the result(s).	993	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_SIZE> and returns the result.
516		994
517	=item $ulong = $device->max_constant_buffer_size	995	=item $ulong = $device->max_constant_buffer_size
518		996
519	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result(s).	997	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.
520		998
521	=item $uint = $device->max_constant_args	999	=item $uint = $device->max_constant_args
522		1000
523	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_ARGS> and returns the result(s).	1001	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_ARGS> and returns the result.
524		1002
525	=item $device_local_mem_type = $device->local_mem_type	1003	=item $device_local_mem_type = $device->local_mem_type
526		1004
527	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_TYPE> and returns the result(s).	1005	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_TYPE> and returns the result.
528		1006
529	=item $ulong = $device->local_mem_size	1007	=item $ulong = $device->local_mem_size
530		1008
531	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_SIZE> and returns the result(s).	1009	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_SIZE> and returns the result.
532		1010
533	=item $boolean = $device->error_correction_support	1011	=item $boolean = $device->error_correction_support
534		1012
535	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result(s).	1013	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.
536		1014
537	=item $int = $device->profiling_timer_resolution	1015	=item $int = $device->profiling_timer_resolution
538		1016
539	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result(s).	1017	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.
540		1018
541	=item $boolean = $device->endian_little	1019	=item $boolean = $device->endian_little
542		1020
543	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ENDIAN_LITTLE> and returns the result(s).	1021	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ENDIAN_LITTLE> and returns the result.
544		1022
545	=item $boolean = $device->available	1023	=item $boolean = $device->available
546		1024
547	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AVAILABLE> and returns the result(s).	1025	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AVAILABLE> and returns the result.
548		1026
549	=item $boolean = $device->compiler_available	1027	=item $boolean = $device->compiler_available
550		1028
551	Calls C<clGetDeviceInfo> with C<CL_DEVICE_COMPILER_AVAILABLE> and returns the result(s).	1029	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_COMPILER_AVAILABLE> and returns the result.
552		1030
553	=item $device_exec_capabilities = $device->execution_capabilities	1031	=item $device_exec_capabilities = $device->execution_capabilities
554		1032
555	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXECUTION_CAPABILITIES> and returns the result(s).	1033	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXECUTION_CAPABILITIES> and returns the result.
556		1034
557	=item $command_queue_properties = $device->properties	1035	=item $command_queue_properties = $device->properties
558		1036
559	Calls C<clGetDeviceInfo> with C<CL_DEVICE_QUEUE_PROPERTIES> and returns the result(s).	1037	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_QUEUE_PROPERTIES> and returns the result.
560		1038
561	=item $ = $device->platform	1039	=item $ = $device->platform
562		1040
563	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PLATFORM> and returns the result(s).	1041	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PLATFORM> and returns the result.
564		1042
565	=item $string = $device->name	1043	=item $string = $device->name
566		1044
567	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NAME> and returns the result(s).	1045	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NAME> and returns the result.
568		1046
569	=item $string = $device->vendor	1047	=item $string = $device->vendor
570		1048
571	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR> and returns the result(s).	1049	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR> and returns the result.
572		1050
573	=item $string = $device->driver_version	1051	=item $string = $device->driver_version
574		1052
575	Calls C<clGetDeviceInfo> with C<CL_DRIVER_VERSION> and returns the result(s).	1053	Calls C<clGetDeviceInfo> with C<OpenCL::DRIVER_VERSION> and returns the result.
576		1054
577	=item $string = $device->profile	1055	=item $string = $device->profile
578		1056
579	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILE> and returns the result(s).	1057	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILE> and returns the result.
580		1058
581	=item $string = $device->version	1059	=item $string = $device->version
582		1060
583	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VERSION> and returns the result(s).	1061	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VERSION> and returns the result.
584		1062
585	=item $string = $device->extensions	1063	=item $string = $device->extensions
586		1064
587	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXTENSIONS> and returns the result(s).	1065	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXTENSIONS> and returns the result.
588		1066
589	=item $uint = $device->preferred_vector_width_half	1067	=item $uint = $device->preferred_vector_width_half
590		1068
591	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result(s).	1069	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.
592		1070
593	=item $uint = $device->native_vector_width_char	1071	=item $uint = $device->native_vector_width_char
594		1072
595	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result(s).	1073	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.
596		1074
597	=item $uint = $device->native_vector_width_short	1075	=item $uint = $device->native_vector_width_short
598		1076
599	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result(s).	1077	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.
600		1078
601	=item $uint = $device->native_vector_width_int	1079	=item $uint = $device->native_vector_width_int
602		1080
603	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result(s).	1081	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.
604		1082
605	=item $uint = $device->native_vector_width_long	1083	=item $uint = $device->native_vector_width_long
606		1084
607	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result(s).	1085	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.
608		1086
609	=item $uint = $device->native_vector_width_float	1087	=item $uint = $device->native_vector_width_float
610		1088
611	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result(s).	1089	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.
612		1090
613	=item $uint = $device->native_vector_width_double	1091	=item $uint = $device->native_vector_width_double
614		1092
615	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result(s).	1093	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.
616		1094
617	=item $uint = $device->native_vector_width_half	1095	=item $uint = $device->native_vector_width_half
618		1096
619	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result(s).	1097	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.
620		1098
621	=item $device_fp_config = $device->double_fp_config	1099	=item $device_fp_config = $device->double_fp_config
622		1100
623	Calls C<clGetDeviceInfo> with C<CL_DEVICE_DOUBLE_FP_CONFIG> and returns the result(s).	1101	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_DOUBLE_FP_CONFIG> and returns the result.
624		1102
625	=item $device_fp_config = $device->half_fp_config	1103	=item $device_fp_config = $device->half_fp_config
626		1104
627	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HALF_FP_CONFIG> and returns the result(s).	1105	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HALF_FP_CONFIG> and returns the result.
628		1106
629	=item $boolean = $device->host_unified_memory	1107	=item $boolean = $device->host_unified_memory
630		1108
631	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HOST_UNIFIED_MEMORY> and returns the result(s).	1109	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HOST_UNIFIED_MEMORY> and returns the result.
632		1110
633	=item $device = $device->parent_device_ext	1111	=item $device = $device->parent_device_ext
634		1112
635	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARENT_DEVICE_EXT> and returns the result(s).	1113	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARENT_DEVICE_EXT> and returns the result.
636		1114
637	=item @device_partition_property_exts = $device->partition_types_ext	1115	=item @device_partition_property_exts = $device->partition_types_ext
638		1116
639	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_TYPES_EXT> and returns the result(s).	1117	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_TYPES_EXT> and returns the result.
640		1118
641	=item @device_partition_property_exts = $device->affinity_domains_ext	1119	=item @device_partition_property_exts = $device->affinity_domains_ext
642		1120
643	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result(s).	1121	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.
644		1122
645	=item $uint = $device->reference_count_ext	1123	=item $uint = $device->reference_count_ext
646		1124
647	Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT > and returns the result(s).	1125	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_REFERENCE_COUNT_EXT> and returns the result.
648		1126
649	=item @device_partition_property_exts = $device->partition_style_ext	1127	=item @device_partition_property_exts = $device->partition_style_ext
650		1128
651	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result(s).	1129	Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_STYLE_EXT> and returns the result.
652		1130
653	=for gengetinfo end device	1131	=for gengetinfo end device
654		1132
655	=back	1133	=back
656		1134
657	=head2 THE OpenCL::Context CLASS	1135	=head2 THE OpenCL::Context CLASS
658		1136
		1137	An OpenCL::Context is basically a container, or manager, for a number of
		1138	devices of a platform. It is used to create all sorts of secondary objects
		1139	such as buffers, queues, programs and so on.
		1140
		1141	All context creation functions and methods take a list of properties
		1142	(type-value pairs). All property values can be specified as integers -
		1143	some additionally support other types:
		1144
659	=over 4	1145	=over 4
660		1146
		1147	=item OpenCL::CONTEXT_PLATFORM
		1148
		1149	Also accepts OpenCL::Platform objects.
		1150
		1151	=item OpenCL::GLX_DISPLAY_KHR
		1152
		1153	Also accepts C<undef>, in which case a deep and troubling hack is engaged
		1154	to find the current glx display (see L<GLX SUPPORT>).
		1155
		1156	=item OpenCL::GL_CONTEXT_KHR
		1157
		1158	Also accepts C<undef>, in which case a deep and troubling hack is engaged
		1159	to find the current glx context (see L<GLX SUPPORT>).
		1160
		1161	=back
		1162
		1163	=over 4
		1164
		1165	=item $prog = $ctx->build_program ($program, $options = "")
		1166
		1167	This convenience function tries to build the program on all devices in
		1168	the context. If the build fails, then the function will C<croak> with the
		1169	build log. Otherwise ti returns the program object.
		1170
		1171	The C<$program> can either be a C<OpenCL::Program> object or a string
		1172	containing the program. In the latter case, a program objetc will be
		1173	created automatically.
		1174
		1175	=cut
		1176
		1177	sub OpenCL::Context::build_program {
		1178	my ($self, $prog, $options) = @_;
		1179
		1180	$prog = $self->program_with_source ($prog)
		1181	unless ref $prog;
		1182
		1183	eval { $prog->build (undef, $options); 1 }
		1184	or errno == BUILD_PROGRAM_FAILURE
		1185	or errno == INVALID_BINARY # workaround nvidia bug
		1186	or Carp::croak "OpenCL::Context->build_program: " . err2str;
		1187
		1188	# we check status for all devices
		1189	for my $dev ($self->devices) {
		1190	$prog->build_status ($dev) == BUILD_SUCCESS
		1191	or Carp::croak "Building OpenCL program for device '" . $dev->name . "' failed:\n"
		1192	. $prog->build_log ($dev);
		1193	}
		1194
		1195	$prog
		1196	}
		1197
661	=item $queue = $ctx->queue ($device, $properties)	1198	=item $queue = $ctx->queue ($device, $properties)
662		1199
663	Create a new OpenCL::Queue object from the context and the given device.	1200	Create a new OpenCL::Queue object from the context and the given device.
664		1201
665	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html>	1202	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html>
666		1203
		1204	Example: create an out-of-order queue.
		1205
		1206	$queue = $ctx->queue ($device, OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE);
		1207
667	=item $ev = $ctx->user_event	1208	=item $ev = $ctx->user_event
668		1209
669	Creates a new OpenCL::UserEvent object.	1210	Creates a new OpenCL::UserEvent object.
670		1211
671	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateUserEvent.html>	1212	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateUserEvent.html>
672		1213
673	=item $buf = $ctx->buffer ($flags, $len)	1214	=item $buf = $ctx->buffer ($flags, $len)
674		1215
675	Creates a new OpenCL::Buffer object with the given flags and octet-size.	1216	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the
		1217	given flags and octet-size.
		1218
		1219	flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_WRITE_ONLY, OpenCL::MEM_READ_ONLY,
		1220	OpenCL::MEM_USE_HOST_PTR, OpenCL::MEM_ALLOC_HOST_PTR, OpenCL::MEM_COPY_HOST_PTR,
		1221	OpenCL::MEM_HOST_WRITE_ONLY, OpenCL::MEM_HOST_READ_ONLY, OpenCL::MEM_HOST_NO_ACCESS.
676		1222
677	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>	1223	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>
678		1224
679	=item $buf = $ctx->buffer_sv ($flags, $data)	1225	=item $buf = $ctx->buffer_sv ($flags, $data)
680		1226
681	Creates a new OpenCL::Buffer object and initialise it with the given data values.	1227	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and
		1228	initialise it with the given data values.
		1229
		1230	=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)
		1231
		1232	Creates a new OpenCL::Image object and optionally initialises it with
		1233	the given data values.
		1234
		1235	channel_order: OpenCL::R, OpenCL::A, OpenCL::RG, OpenCL::RA, OpenCL::RGB,
		1236	OpenCL::RGBA, OpenCL::BGRA, OpenCL::ARGB, OpenCL::INTENSITY, OpenCL::LUMINANCE,
		1237	OpenCL::Rx, OpenCL::RGx, OpenCL::RGBx.
		1238
		1239	channel_type: OpenCL::SNORM_INT8, OpenCL::SNORM_INT16, OpenCL::UNORM_INT8,
		1240	OpenCL::UNORM_INT16, OpenCL::UNORM_SHORT_565, OpenCL::UNORM_SHORT_555,
		1241	OpenCL::UNORM_INT_101010, OpenCL::SIGNED_INT8, OpenCL::SIGNED_INT16,
		1242	OpenCL::SIGNED_INT32, OpenCL::UNSIGNED_INT8, OpenCL::UNSIGNED_INT16,
		1243	OpenCL::UNSIGNED_INT32, OpenCL::HALF_FLOAT, OpenCL::FLOAT.
		1244
		1245	type: OpenCL::MEM_OBJECT_BUFFER, OpenCL::MEM_OBJECT_IMAGE2D,
		1246	OpenCL::MEM_OBJECT_IMAGE3D, OpenCL::MEM_OBJECT_IMAGE2D_ARRAY,
		1247	OpenCL::MEM_OBJECT_IMAGE1D, OpenCL::MEM_OBJECT_IMAGE1D_ARRAY,
		1248	OpenCL::MEM_OBJECT_IMAGE1D_BUFFER.
		1249
		1250	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>
682		1251
683	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)	1252	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)
684		1253
685	Creates a new OpenCL::Image2D object and optionally initialises it with the given data values.	1254	Creates a new OpenCL::Image2D object and optionally initialises it with
		1255	the given data values.
686		1256
687	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html>	1257	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html>
688		1258
689	=item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $row_pitch = 0, $slice_pitch = 0, $data = undef)	1259	=item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $row_pitch = 0, $slice_pitch = 0, $data = undef)
690		1260
691	Creates a new OpenCL::Image3D object and optionally initialises it with the given data values.	1261	Creates a new OpenCL::Image3D object and optionally initialises it with
		1262	the given data values.
692		1263
693	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html>	1264	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html>
		1265
		1266	=item $buffer = $ctx->gl_buffer ($flags, $bufobj)
		1267
		1268	Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given
		1269	OpenGL buffer object.
		1270
		1271	flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_READ_ONLY, OpenCL::MEM_WRITE_ONLY.
		1272
		1273	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html
		1274
		1275	=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)
		1276
		1277	Creates a new OpenCL::Image object that refers to the given OpenGL
		1278	texture object or buffer.
		1279
		1280	target: GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_BUFFER,
		1281	GL_TEXTURE_2D, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_3D,
		1282	GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
		1283	GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
		1284	GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
		1285	GL_TEXTURE_RECTANGLE/GL_TEXTURE_RECTANGLE_ARB.
		1286
		1287	http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html
		1288
		1289	=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)
		1290
		1291	Creates a new OpenCL::Image2D object that refers to the given OpenGL
		1292	2D texture object.
		1293
		1294	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture2D.html
		1295
		1296	=item $img = $ctx->gl_texture3d ($flags, $target, $miplevel, $texture)
		1297
		1298	Creates a new OpenCL::Image3D object that refers to the given OpenGL
		1299	3D texture object.
		1300
		1301	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture3D.html
		1302
		1303	=item $ctx->gl_renderbuffer ($flags, $renderbuffer)
		1304
		1305	Creates a new OpenCL::Image2D object that refers to the given OpenGL
		1306	render buffer.
		1307
		1308	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLRenderbuffer.html
694		1309
695	=item @formats = $ctx->supported_image_formats ($flags, $image_type)	1310	=item @formats = $ctx->supported_image_formats ($flags, $image_type)
696		1311
697	Returns a list of matching image formats - each format is an arrayref with	1312	Returns a list of matching image formats - each format is an arrayref with
698	two values, $channel_order and $channel_type, in it.	1313	two values, $channel_order and $channel_type, in it.
…		…
701		1316
702	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)	1317	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)
703		1318
704	Creates a new OpenCL::Sampler object.	1319	Creates a new OpenCL::Sampler object.
705		1320
		1321	addressing_mode: OpenCL::ADDRESS_NONE, OpenCL::ADDRESS_CLAMP_TO_EDGE,
		1322	OpenCL::ADDRESS_CLAMP, OpenCL::ADDRESS_REPEAT, OpenCL::ADDRESS_MIRRORED_REPEAT.
		1323
		1324	filter_mode: OpenCL::FILTER_NEAREST, OpenCL::FILTER_LINEAR.
		1325
706	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>	1326	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>
707		1327
708	=item $program = $ctx->program_with_source ($string)	1328	=item $program = $ctx->program_with_source ($string)
709		1329
710	Creates a new OpenCL::Program object from the given source code.	1330	Creates a new OpenCL::Program object from the given source code.
711		1331
712	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>	1332	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>
713		1333
		1334	=item ($program, \@status) = $ctx->program_with_binary (\@devices, \@binaries)
		1335
		1336	Creates a new OpenCL::Program object from the given binaries.
		1337
		1338	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithBinary.html>
		1339
		1340	Example: clone an existing program object that contains a successfully
		1341	compiled program, no matter how useless this is.
		1342
		1343	my $clone = $ctx->program_with_binary ([$prog->devices], [$prog->binaries]);
		1344
		1345	=item $program = $ctx->program_with_built_in_kernels (\@devices, $kernel_names)
		1346
		1347	Creates a new OpenCL::Program object from the given built-in kernel names.
		1348
		1349	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateProgramWithBuiltInKernels.html>
		1350
		1351	=item $program = $ctx->link_program (\@devices, $options, \@programs, $cb->($program) = undef)
		1352
		1353	Links all (already compiled) program objects specified in C<@programs>
		1354	together and returns a new OpenCL::Program object with the result.
		1355
		1356	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clLinkProgram.html>
		1357
714	=item $packed_value = $ctx->info ($name)	1358	=item $packed_value = $ctx->info ($name)
715		1359
716	See C<< $platform->info >> for details.	1360	See C<< $platform->info >> for details.
717		1361
718	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>	1362	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>
719		1363
720	=for gengetinfo begin context	1364	=for gengetinfo begin context
721		1365
722
723	=item $uint = $context->reference_count	1366	=item $uint = $context->reference_count
724		1367
725	Calls C<clGetContextInfo> with C<CL_CONTEXT_REFERENCE_COUNT> and returns the result(s).	1368	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_REFERENCE_COUNT> and returns the result.
726		1369
727	=item @devices = $context->devices	1370	=item @devices = $context->devices
728		1371
729	Calls C<clGetContextInfo> with C<CL_CONTEXT_DEVICES> and returns the result(s).	1372	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_DEVICES> and returns the result.
730		1373
731	=item @property_ints = $context->properties	1374	=item @property_ints = $context->properties
732		1375
733	Calls C<clGetContextInfo> with C<CL_CONTEXT_PROPERTIES> and returns the result(s).	1376	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_PROPERTIES> and returns the result.
734		1377
735	=item $uint = $context->num_devices	1378	=item $uint = $context->num_devices
736		1379
737	Calls C<clGetContextInfo> with C<CL_CONTEXT_NUM_DEVICES> and returns the result(s).	1380	Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_NUM_DEVICES> and returns the result.
738		1381
739	=for gengetinfo end context	1382	=for gengetinfo end context
740		1383
741	=back	1384	=back
742		1385
743	=head2 THE OpenCL::Queue CLASS	1386	=head2 THE OpenCL::Queue CLASS
744		1387
745	An OpenCL::Queue represents an execution queue for OpenCL. You execute	1388	An OpenCL::Queue represents an execution queue for OpenCL. You execute
746	requests by calling their respective C<enqueue_xxx> method and waitinf for	1389	requests by calling their respective method and waiting for it to complete
747	it to complete in some way.	1390	in some way.
748		1391
749	All the enqueue methods return an event object that can be used to wait	1392	Most methods that enqueue some request return an event object that can
750	for completion, unless the method is called in void context, in which case	1393	be used to wait for completion (optionally using a callback), unless
751	no event object is created.	1394	the method is called in void context, in which case no event object is
		1395	created.
752		1396
753	They also allow you to specify any number of other event objects that this	1397	They also allow you to specify any number of other event objects that this
754	request has to wait for before it starts executing, by simply passing the	1398	request has to wait for before it starts executing, by simply passing the
755	event objects as extra parameters to the enqueue methods.	1399	event objects as extra parameters to the enqueue methods. To simplify
		1400	program design, this module ignores any C<undef> values in the list of
		1401	events. This makes it possible to code operations such as this, without
		1402	having to put a valid event object into C<$event> first:
		1403
		1404	$event = $queue->xxx (..., $event);
756		1405
757	Queues execute in-order by default, without any parallelism, so in most	1406	Queues execute in-order by default, without any parallelism, so in most
758	cases (i.e. you use only one queue) it's not necessary to wait for or	1407	cases (i.e. you use only one queue) it's not necessary to wait for or
759	create event objects.	1408	create event objects, althoguh an our of order queue is often a bit
		1409	faster.
760		1410
761	=over 4	1411	=over 4
762		1412
763	=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)	1413	=item $ev = $queue->read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)
764		1414
765	Reads data from buffer into the given string.	1415	Reads data from buffer into the given string.
766		1416
767	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>	1417	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>
768		1418
769	=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)	1419	=item $ev = $queue->write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)
770		1420
771	Writes data to buffer from the given string.	1421	Writes data to buffer from the given string.
772		1422
773	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>	1423	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>
774		1424
775	=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)	1425	=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)
776		1426
777	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>	1427	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>
778		1428
		1429	$eue->read_buffer_rect ($buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...)
		1430
		1431	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html
		1432
		1433	=item $ev = $queue->write_buffer_rect ($buf, $blocking, $buf_y, $host_x, $host_z, $height, $buf_row_pitch, $host_row_pitch, $data, $wait_events...)
		1434
		1435	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html
		1436
		1437	=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...)
		1438
		1439	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>
		1440
779	=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1441	=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
		1442
		1443	C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL
		1444	module uses the image width (and height) to supply default values.
780		1445
781	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>	1446	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>
782		1447
783	=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)	1448	=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
784		1449
		1450	C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL
		1451	module uses the image width (and height) to supply default values.
785	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>	1452	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>
786		1453
		1454	=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...)
		1455
		1456	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>
		1457
		1458	=item $ev = $queue->copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...)
		1459
		1460	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>
		1461
787	=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...)	1462	=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...)
788		1463
789	Yeah.	1464	Yeah.
790		1465
791	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>
792
793	=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...)
794
795	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.	1466	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.
796		1467
797	=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...)	1468	=item $ev = $queue->fill_buffer ($mem, $pattern, $offset, $size, ...)
798		1469
		1470	Fills the given buffer object with repeated applications of C<$pattern>,
		1471	starting at C<$offset> for C<$size> octets.
		1472
		1473	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillBuffer.html>
		1474
		1475	=item $ev = $queue->fill_image ($img, $r, $g, $b, $a, $x, $y, $z, $width, $height, $depth, ...)
		1476
		1477	Fills the given image area with the given rgba colour components. The
		1478	components are normally floating point values between C<0> and C<1>,
		1479	except when the image channel data type is a signe dor unsigned
		1480	unnormalised format, in which case the range is determined by the format.
		1481
799	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>	1482	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillImage.html>
800		1483
801	=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...)
802
803	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>
804
805	=item $ev = $queue->enqueue_task ($kernel, $wait_events...)	1484	=item $ev = $queue->task ($kernel, $wait_events...)
806		1485
807	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>	1486	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>
808		1487
809	=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...)	1488	=item $ev = $queue->nd_range_kernel ($kernel, \@global_work_offset, \@global_work_size, \@local_work_size, $wait_events...)
810		1489
811	Enqueues a kernel execution.	1490	Enqueues a kernel execution.
812		1491
813	@$global_work_size must be specified as a reference to an array of	1492	\@global_work_size must be specified as a reference to an array of
814	integers specifying the work sizes (element counts).	1493	integers specifying the work sizes (element counts).
815		1494
816	@$global_work_offset must be either C<undef> (in which case all offsets	1495	\@global_work_offset must be either C<undef> (in which case all offsets
817	are C<0>), or a reference to an array of work offsets, with the same number	1496	are C<0>), or a reference to an array of work offsets, with the same number
818	of elements as @$global_work_size.	1497	of elements as \@global_work_size.
819		1498
820	@$local_work_size must be either C<undef> (in which case the	1499	\@local_work_size must be either C<undef> (in which case the
821	implementation is supposed to choose good local work sizes), or a	1500	implementation is supposed to choose good local work sizes), or a
822	reference to an array of local work sizes, with the same number of	1501	reference to an array of local work sizes, with the same number of
823	elements as @$global_work_size.	1502	elements as \@global_work_size.
824		1503
825	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>	1504	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
826		1505
827	=item $ev = $queue->enqueue_marker	1506	=item $ev = $queue->migrate_mem_objects (\@mem_objects, $flags, $wait_events...)
828		1507
		1508	Migrates a number of OpenCL::Memory objects to or from the device.
		1509
		1510	flags: OpenCL::MIGRATE_MEM_OBJECT_HOST, OpenCL::MIGRATE_MEM_OBJECT_CONTENT_UNDEFINED
		1511
		1512	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMigrateMemObjects.html>
		1513
		1514	=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)
		1515
		1516	Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired
		1517	for subsequent OpenCL usage.
		1518
829	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMarker.html>	1519	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html>
830		1520
		1521	=item $ev = $queue->release_gl_objects ([object, ...], $wait_events...)
		1522
		1523	Enqueues a list (an array-ref of OpenCL::Memory objects) to be released
		1524	for subsequent OpenGL usage.
		1525
		1526	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html>
		1527
831	=item $ev = $queue->enqueue_wait_for_events ($wait_events...)	1528	=item $ev = $queue->wait_for_events ($wait_events...)
832		1529
833	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>	1530	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>
834		1531
835	=item $queue->enqueue_barrier	1532	=item $ev = $queue->marker ($wait_events...)
836		1533
		1534	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html>
		1535
		1536	=item $ev = $queue->barrier ($wait_events...)
		1537
837	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueBarrier.html>	1538	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html>
838		1539
839	=item $queue->flush	1540	=item $queue->flush
840		1541
841	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html>	1542	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html>
842		1543
…		…
850		1551
851	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetCommandQueueInfo.html>	1552	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetCommandQueueInfo.html>
852		1553
853	=for gengetinfo begin command_queue	1554	=for gengetinfo begin command_queue
854		1555
855
856	=item $ctx = $command_queue->context	1556	=item $ctx = $command_queue->context
857		1557
858	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_CONTEXT> and returns the result(s).	1558	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_CONTEXT> and returns the result.
859		1559
860	=item $device = $command_queue->device	1560	=item $device = $command_queue->device
861		1561
862	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_DEVICE> and returns the result(s).	1562	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_DEVICE> and returns the result.
863		1563
864	=item $uint = $command_queue->reference_count	1564	=item $uint = $command_queue->reference_count
865		1565
866	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_REFERENCE_COUNT> and returns the result(s).	1566	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_REFERENCE_COUNT> and returns the result.
867		1567
868	=item $command_queue_properties = $command_queue->properties	1568	=item $command_queue_properties = $command_queue->properties
869		1569
870	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_PROPERTIES> and returns the result(s).	1570	Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_PROPERTIES> and returns the result.
871		1571
872	=for gengetinfo end command_queue	1572	=for gengetinfo end command_queue
		1573
		1574	=back
		1575
		1576	=head3 MEMORY MAPPED BUFFERS
		1577
		1578	OpenCL allows you to map buffers and images to host memory (read: perl
		1579	scalars). This is done much like reading or copying a buffer, by enqueuing
		1580	a map or unmap operation on the command queue.
		1581
		1582	The map operations return an C<OpenCL::Mapped> object - see L<THE
		1583	OpenCL::Mapped CLASS> section for details on what to do with these
		1584	objects.
		1585
		1586	The object will be unmapped automatically when the mapped object is
		1587	destroyed (you can use a barrier to make sure the unmap has finished,
		1588	before using the buffer in a kernel), but you can also enqueue an unmap
		1589	operation manually.
		1590
		1591	=over 4
		1592
		1593	=item $mapped_buffer = $queue->map_buffer ($buf, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $offset=0, $size=undef, $wait_events...)
		1594
		1595	Maps the given buffer into host memory and returns an
		1596	C<OpenCL::MappedBuffer> object. If C<$size> is specified as undef, then
		1597	the map will extend to the end of the buffer.
		1598
		1599	map_flags: OpenCL::MAP_READ, OpenCL::MAP_WRITE, OpenCL::MAP_WRITE_INVALIDATE_REGION.
		1600
		1601	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapBuffer.html>
		1602
		1603	Example: map the buffer $buf fully and replace the first 4 bytes by "abcd", then unmap.
		1604
		1605	{
		1606	my $mapped = $queue->map_buffer ($buf, 1, OpenCL::MAP_WRITE);
		1607	substr $$mapped, 0, 4, "abcd";
		1608	} # asynchronously unmap because $mapped is destroyed
		1609
		1610	=item $mapped_image = $queue->map_image ($img, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $x=0, $y=0, $z=0, $width=undef, $height=undef, $depth=undef, $wait_events...)
		1611
		1612	Maps the given image area into host memory and return an
		1613	C<OpenCL::MappedImage> object.
		1614
		1615	If any of C<$width>, C<$height> and/or C<$depth> are C<undef> then they
		1616	will be replaced by the maximum possible value.
		1617
		1618	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapImage.html>
		1619
		1620	Example: map an image (with OpenCL::UNSIGNED_INT8 channel type) and set
		1621	the first channel of the leftmost column to 5, then explicitly unmap
		1622	it. You are not necessarily meant to do it this way, this example just
		1623	shows you the accessors to use :)
		1624
		1625	my $mapped = $queue->map_image ($image, 1, OpenCL::MAP_WRITE);
		1626
		1627	$mapped->write ($_ * $mapped->row_pitch, pack "C", 5)
		1628	for 0 .. $mapped->height - 1;
		1629
		1630	$mapped->unmap;.
		1631	$mapped->wait; # only needed for out of order queues normally
		1632
		1633	=item $ev = $queue->unmap ($mapped, $wait_events...)
		1634
		1635	Unmaps the data from host memory. You must not call any methods that
		1636	modify the data, or modify the data scalar directly, after calling this
		1637	method.
		1638
		1639	The mapped event object will always be passed as part of the
		1640	$wait_events. The mapped event object will be replaced by the new event
		1641	object that this request creates.
873		1642
874	=back	1643	=back
875		1644
876	=head2 THE OpenCL::Memory CLASS	1645	=head2 THE OpenCL::Memory CLASS
877		1646
…		…
884		1653
885	See C<< $platform->info >> for details.	1654	See C<< $platform->info >> for details.
886		1655
887	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html>	1656	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html>
888		1657
		1658	=item $memory->destructor_callback ($cb->())
		1659
		1660	Sets a callback that will be invoked after the memory object is destructed.
		1661
		1662	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetMemObjectDestructorCallback.html>
		1663
889	=for gengetinfo begin mem	1664	=for gengetinfo begin mem
890		1665
891
892	=item $mem_object_type = $mem->type	1666	=item $mem_object_type = $mem->type
893		1667
894	Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result(s).	1668	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_TYPE> and returns the result.
895		1669
896	=item $mem_flags = $mem->flags	1670	=item $mem_flags = $mem->flags
897		1671
898	Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result(s).	1672	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_FLAGS> and returns the result.
899		1673
900	=item $int = $mem->size	1674	=item $int = $mem->size
901		1675
902	Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result(s).	1676	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_SIZE> and returns the result.
903		1677
904	=item $ptr_value = $mem->host_ptr	1678	=item $ptr_value = $mem->host_ptr
905		1679
906	Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result(s).	1680	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_HOST_PTR> and returns the result.
907		1681
908	=item $uint = $mem->map_count	1682	=item $uint = $mem->map_count
909		1683
910	Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result(s).	1684	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_MAP_COUNT> and returns the result.
911		1685
912	=item $uint = $mem->reference_count	1686	=item $uint = $mem->reference_count
913		1687
914	Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result(s).	1688	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_REFERENCE_COUNT> and returns the result.
915		1689
916	=item $ctx = $mem->context	1690	=item $ctx = $mem->context
917		1691
918	Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result(s).	1692	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_CONTEXT> and returns the result.
919		1693
920	=item $mem = $mem->associated_memobject	1694	=item $mem = $mem->associated_memobject
921		1695
922	Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result(s).	1696	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_ASSOCIATED_MEMOBJECT> and returns the result.
923		1697
924	=item $int = $mem->offset	1698	=item $int = $mem->offset
925		1699
926	Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result(s).	1700	Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_OFFSET> and returns the result.
927		1701
928	=for gengetinfo end mem	1702	=for gengetinfo end mem
929		1703
		1704	=item ($type, $name) = $mem->gl_object_info
		1705
		1706	Returns the OpenGL object type (e.g. OpenCL::GL_OBJECT_TEXTURE2D) and the
		1707	object "name" (e.g. the texture name) used to create this memory object.
		1708
		1709	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetGLObjectInfo.html>
		1710
930	=back	1711	=back
931		1712
		1713	=head2 THE OpenCL::Buffer CLASS
		1714
		1715	This is a subclass of OpenCL::Memory, and the superclass of
		1716	OpenCL::BufferObj. Its purpose is simply to distinguish between buffers
		1717	and sub-buffers.
		1718
		1719	=head2 THE OpenCL::BufferObj CLASS
		1720
		1721	This is a subclass of OpenCL::Buffer and thus OpenCL::Memory. It exists
		1722	because one cna create sub buffers of OpenLC::BufferObj objects, but not
		1723	sub buffers from these sub buffers.
		1724
		1725	=over 4
		1726
		1727	=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size)
		1728
		1729	Creates an OpenCL::Buffer objects from this buffer and returns it. The
		1730	C<buffer_create_type> is assumed to be C<OpenCL::BUFFER_CREATE_TYPE_REGION>.
		1731
		1732	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html>
		1733
		1734	=back
		1735
932	=head2 THE OpenCL::Image CLASS	1736	=head2 THE OpenCL::Image CLASS
933		1737
934	This is the superclass of all image objects - OpenCL::Image2D and OpenCL::Image3D.	1738	This is the superclass of all image objects - OpenCL::Image1D,
		1739	OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D,
		1740	OpenCL::Image2DArray and OpenCL::Image3D.
935		1741
936	=over 4	1742	=over 4
937		1743
938	=item $packed_value = $ev->image_info ($name)	1744	=item $packed_value = $image->image_info ($name)
939		1745
940	See C<< $platform->info >> for details.	1746	See C<< $platform->info >> for details.
941		1747
942	The reason this method is not called C<info> is that there already is an	1748	The reason this method is not called C<info> is that there already is an
943	C<< ->info >> method inherited from C<OpenCL::Memory>.	1749	C<< ->info >> method inherited from C<OpenCL::Memory>.
944		1750
945	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>	1751	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
946		1752
		1753	=item ($channel_order, $channel_data_type) = $image->format
		1754
		1755	Returns the channel order and type used to create the image by calling
		1756	C<clGetImageInfo> with C<OpenCL::IMAGE_FORMAT>.
		1757
947	=for gengetinfo begin image	1758	=for gengetinfo begin image
948		1759
949
950	=item $int = $image->element_size	1760	=item $int = $image->element_size
951		1761
952	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result(s).	1762	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ELEMENT_SIZE> and returns the result.
953		1763
954	=item $int = $image->row_pitch	1764	=item $int = $image->row_pitch
955		1765
956	Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result(s).	1766	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ROW_PITCH> and returns the result.
957		1767
958	=item $int = $image->slice_pitch	1768	=item $int = $image->slice_pitch
959		1769
960	Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result(s).	1770	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_SLICE_PITCH> and returns the result.
961		1771
962	=item $int = $image->width	1772	=item $int = $image->width
963		1773
964	Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result(s).	1774	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_WIDTH> and returns the result.
965		1775
966	=item $int = $image->height	1776	=item $int = $image->height
967		1777
968	Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result(s).	1778	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_HEIGHT> and returns the result.
969		1779
970	=item $int = $image->depth	1780	=item $int = $image->depth
971		1781
972	Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result(s).	1782	Calls C<clGetImageInfo> with C<OpenCL::IMAGE_DEPTH> and returns the result.
973		1783
974	=for gengetinfo end image	1784	=for gengetinfo end image
975		1785
		1786	=for gengetinfo begin gl_texture
		1787
		1788	=item $GLenum = $gl_texture->target
		1789
		1790	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_TEXTURE_TARGET> and returns the result.
		1791
		1792	=item $GLint = $gl_texture->gl_mipmap_level
		1793
		1794	Calls C<clGetGLTextureInfo> with C<OpenCL::GL_MIPMAP_LEVEL> and returns the result.
		1795
		1796	=for gengetinfo end gl_texture
		1797
976	=back	1798	=back
977		1799
978	=head2 THE OpenCL::Sampler CLASS	1800	=head2 THE OpenCL::Sampler CLASS
979		1801
980	=over 4	1802	=over 4
…		…
985		1807
986	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html>	1808	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html>
987		1809
988	=for gengetinfo begin sampler	1810	=for gengetinfo begin sampler
989		1811
990
991	=item $uint = $sampler->reference_count	1812	=item $uint = $sampler->reference_count
992		1813
993	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result(s).	1814	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_REFERENCE_COUNT> and returns the result.
994		1815
995	=item $ctx = $sampler->context	1816	=item $ctx = $sampler->context
996		1817
997	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result(s).	1818	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_CONTEXT> and returns the result.
998		1819
999	=item $addressing_mode = $sampler->normalized_coords	1820	=item $addressing_mode = $sampler->normalized_coords
1000		1821
1001	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result(s).	1822	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_NORMALIZED_COORDS> and returns the result.
1002		1823
1003	=item $filter_mode = $sampler->addressing_mode	1824	=item $filter_mode = $sampler->addressing_mode
1004		1825
1005	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result(s).	1826	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_ADDRESSING_MODE> and returns the result.
1006		1827
1007	=item $boolean = $sampler->filter_mode	1828	=item $boolean = $sampler->filter_mode
1008		1829
1009	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result(s).	1830	Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_FILTER_MODE> and returns the result.
1010		1831
1011	=for gengetinfo end sampler	1832	=for gengetinfo end sampler
1012		1833
1013	=back	1834	=back
1014		1835
1015	=head2 THE OpenCL::Program CLASS	1836	=head2 THE OpenCL::Program CLASS
1016		1837
1017	=over 4	1838	=over 4
1018		1839
1019	=item $program->build ($device, $options = "")	1840	=item $program->build (\@devices = undef, $options = "", $cb->($program) = undef)
1020		1841
1021	Tries to build the program with the givne options.	1842	Tries to build the program with the given options. See also the
		1843	C<$ctx->build> convenience function.
		1844
		1845	If a callback is specified, then it will be called when compilation is
		1846	finished. Note that many OpenCL implementations block your program while
		1847	compiling whether you use a callback or not. See C<build_async> if you
		1848	want to make sure the build is done in the background.
		1849
		1850	Note that some OpenCL implementations act up badly, and don't call the
		1851	callback in some error cases (but call it in others). This implementation
		1852	assumes the callback will always be called, and leaks memory if this is
		1853	not so. So best make sure you don't pass in invalid values.
		1854
		1855	Some implementations fail with C<OpenCL::INVALID_BINARY> when the
		1856	compilation state is successful but some later stage fails.
		1857
		1858	options: C<-D name>, C<-D name=definition>, C<-I dir>,
		1859	C<-cl-single-precision-constant>, C<-cl-denorms-are-zero>,
		1860	C<-cl-fp32-correctly-rounded-divide-sqrt>, C<-cl-opt-disable>,
		1861	C<-cl-mad-enable>, C<-cl-no-signed-zeros>, C<-cl-unsafe-math-optimizations>,
		1862	C<-cl-finite-math-only>, C<-cl-fast-relaxed-math>,
		1863	C<-w>, C<-Werror>, C<-cl-std=CL1.1/CL1.2>, C<-cl-kernel-arg-info>,
		1864	C<-create-library>, C<-enable-link-options>.
		1865
		1866	build_status: OpenCL::BUILD_SUCCESS, OpenCL::BUILD_NONE,
		1867	OpenCL::BUILD_ERROR, OpenCL::BUILD_IN_PROGRESS.
1022		1868
1023	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>	1869	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
		1870
		1871	=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
		1872
		1873	Similar to C<< ->build >>, except it starts a thread, and never fails (you
		1874	need to check the compilation status form the callback, or by polling).
		1875
		1876	=item $program->compile (\@devices = undef, $options = "", \%headers = undef, $cb->($program) = undef)
		1877
		1878	Compiles the given program for the given devices (or all devices if
		1879	undef). If C<$headers> is given, it must be a hashref with include name =>
		1880	OpenCL::Program pairs.
		1881
		1882	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCompileProgram.html>
1024		1883
1025	=item $packed_value = $program->build_info ($device, $name)	1884	=item $packed_value = $program->build_info ($device, $name)
1026		1885
1027	Similar to C<< $platform->info >>, but returns build info for a previous	1886	Similar to C<< $platform->info >>, but returns build info for a previous
1028	build attempt for the given device.	1887	build attempt for the given device.
1029		1888
		1889	binary_type: OpenCL::PROGRAM_BINARY_TYPE_NONE,
		1890	OpenCL::PROGRAM_BINARY_TYPE_COMPILED_OBJECT,
		1891	OpenCL::PROGRAM_BINARY_TYPE_LIBRARY,
		1892	OpenCL::PROGRAM_BINARY_TYPE_EXECUTABLE.
		1893
1030	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>	1894	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>
1031		1895
1032	=item $kernel = $program->kernel ($function_name)	1896	=item $kernel = $program->kernel ($function_name)
1033		1897
1034	Creates an OpenCL::Kernel object out of the named C<__kernel> function in	1898	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
1035	the program.	1899	the program.
1036		1900
1037	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>	1901	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>
1038		1902
		1903	=item @kernels = $program->kernels_in_program
		1904
		1905	Returns all kernels successfully compiled for all devices in program.
		1906
		1907	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernelsInProgram.html
		1908
1039	=for gengetinfo begin program_build	1909	=for gengetinfo begin program_build
1040		1910
1041
1042	=item $build_status = $program->build_status ($device)	1911	=item $build_status = $program->build_status ($device)
1043		1912
1044	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result(s).	1913	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_STATUS> and returns the result.
1045		1914
1046	=item $string = $program->build_options ($device)	1915	=item $string = $program->build_options ($device)
1047		1916
1048	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result(s).	1917	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_OPTIONS> and returns the result.
1049		1918
1050	=item $string = $program->build_log ($device)	1919	=item $string = $program->build_log ($device)
1051		1920
1052	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result(s).	1921	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_LOG> and returns the result.
		1922
		1923	=item $binary_type = $program->binary_type ($device)
		1924
		1925	Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BINARY_TYPE> and returns the result.
1053		1926
1054	=for gengetinfo end program_build	1927	=for gengetinfo end program_build
1055		1928
1056	=item $packed_value = $program->info ($name)	1929	=item $packed_value = $program->info ($name)
1057		1930
…		…
1059		1932
1060	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html>	1933	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html>
1061		1934
1062	=for gengetinfo begin program	1935	=for gengetinfo begin program
1063		1936
1064
1065	=item $uint = $program->reference_count	1937	=item $uint = $program->reference_count
1066		1938
1067	Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result(s).	1939	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_REFERENCE_COUNT> and returns the result.
1068		1940
1069	=item $ctx = $program->context	1941	=item $ctx = $program->context
1070		1942
1071	Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result(s).	1943	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_CONTEXT> and returns the result.
1072		1944
1073	=item $uint = $program->num_devices	1945	=item $uint = $program->num_devices
1074		1946
1075	Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result(s).	1947	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_NUM_DEVICES> and returns the result.
1076		1948
1077	=item @devices = $program->devices	1949	=item @devices = $program->devices
1078		1950
1079	Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result(s).	1951	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_DEVICES> and returns the result.
1080		1952
1081	=item $string = $program->source	1953	=item $string = $program->source
1082		1954
1083	Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result(s).	1955	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_SOURCE> and returns the result.
1084		1956
1085	=item @ints = $program->binary_sizes	1957	=item @ints = $program->binary_sizes
1086		1958
1087	Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result(s).	1959	Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_BINARY_SIZES> and returns the result.
1088		1960
1089	=for gengetinfo end program	1961	=for gengetinfo end program
1090		1962
		1963	=item @blobs = $program->binaries
		1964
		1965	Returns a string for the compiled binary for every device associated with
		1966	the program, empty strings indicate missing programs, and an empty result
		1967	means no program binaries are available.
		1968
		1969	These "binaries" are often, in fact, informative low-level assembly
		1970	sources.
		1971
		1972	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html>
		1973
1091	=back	1974	=back
1092		1975
1093	=head2 THE OpenCL::Kernel CLASS	1976	=head2 THE OpenCL::Kernel CLASS
1094		1977
1095	=over 4	1978	=over 4
…		…
1100		1983
1101	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html>	1984	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html>
1102		1985
1103	=for gengetinfo begin kernel	1986	=for gengetinfo begin kernel
1104		1987
1105
1106	=item $string = $kernel->function_name	1988	=item $string = $kernel->function_name
1107		1989
1108	Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result(s).	1990	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_FUNCTION_NAME> and returns the result.
1109		1991
1110	=item $uint = $kernel->num_args	1992	=item $uint = $kernel->num_args
1111		1993
1112	Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result(s).	1994	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_NUM_ARGS> and returns the result.
1113		1995
1114	=item $uint = $kernel->reference_count	1996	=item $uint = $kernel->reference_count
1115		1997
1116	Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result(s).	1998	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_REFERENCE_COUNT> and returns the result.
1117		1999
1118	=item $ctx = $kernel->context	2000	=item $ctx = $kernel->context
1119		2001
1120	Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result(s).	2002	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_CONTEXT> and returns the result.
1121		2003
1122	=item $program = $kernel->program	2004	=item $program = $kernel->program
1123		2005
1124	Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result(s).	2006	Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_PROGRAM> and returns the result.
1125		2007
1126	=for gengetinfo end kernel	2008	=for gengetinfo end kernel
1127		2009
1128	=item $packed_value = $kernel->work_group_info ($device, $name)	2010	=item $packed_value = $kernel->work_group_info ($device, $name)
		2011
		2012	See C<< $platform->info >> for details.
		2013
		2014	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
		2015
		2016	=for gengetinfo begin kernel_work_group
		2017
		2018	=item $int = $kernel->work_group_size ($device)
		2019
		2020	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_WORK_GROUP_SIZE> and returns the result.
		2021
		2022	=item @ints = $kernel->compile_work_group_size ($device)
		2023
		2024	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.
		2025
		2026	=item $ulong = $kernel->local_mem_size ($device)
		2027
		2028	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_LOCAL_MEM_SIZE> and returns the result.
		2029
		2030	=item $int = $kernel->preferred_work_group_size_multiple ($device)
		2031
		2032	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.
		2033
		2034	=item $ulong = $kernel->private_mem_size ($device)
		2035
		2036	Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PRIVATE_MEM_SIZE> and returns the result.
		2037
		2038	=for gengetinfo end kernel_work_group
		2039
		2040	=item $packed_value = $kernel->arg_info ($idx, $name)
		2041
		2042	See C<< $platform->info >> for details.
		2043
		2044	L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clGetKernelArgInfo.html>
		2045
		2046	=for gengetinfo begin kernel_arg
		2047
		2048	=item $kernel_arg_address_qualifier = $kernel->arg_address_qualifier ($idx)
		2049
		2050	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ADDRESS_QUALIFIER> and returns the result.
		2051
		2052	=item $kernel_arg_access_qualifier = $kernel->arg_access_qualifier ($idx)
		2053
		2054	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ACCESS_QUALIFIER> and returns the result.
		2055
		2056	=item $string = $kernel->arg_type_name ($idx)
		2057
		2058	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_NAME> and returns the result.
		2059
		2060	=item $kernel_arg_type_qualifier = $kernel->arg_type_qualifier ($idx)
		2061
		2062	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_QUALIFIER> and returns the result.
		2063
		2064	=item $string = $kernel->arg_name ($idx)
		2065
		2066	Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_NAME> and returns the result.
		2067
		2068	=for gengetinfo end kernel_arg
		2069
		2070	=item $kernel->setf ($format, ...)
		2071
		2072	Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
		2073	way to set arguments (and with OpenCL 1.2 it might be rather slow), you
		2074	need to specify a format argument, much as with C<printf>, to tell OpenCL
		2075	what type of argument it is.
		2076
		2077	The format arguments are single letters:
		2078
		2079	c char
		2080	C unsigned char
		2081	s short
		2082	S unsigned short
		2083	i int
		2084	I unsigned int
		2085	l long
		2086	L unsigned long
		2087
		2088	h half float (0..65535)
		2089	f float
		2090	d double
		2091
		2092	z local (octet size)
		2093
		2094	m memory object (buffer or image)
		2095	a sampler
		2096	e event
		2097
		2098	Space characters in the format string are ignored.
		2099
		2100	Example: set the arguments for a kernel that expects an int, two floats, a buffer and an image.
		2101
		2102	$kernel->setf ("i ff mm", 5, 0.5, 3, $buffer, $image);
		2103
		2104	=item $kernel->set_TYPE ($index, $value)
		2105
		2106	=item $kernel->set_char ($index, $value)
		2107
		2108	=item $kernel->set_uchar ($index, $value)
		2109
		2110	=item $kernel->set_short ($index, $value)
		2111
		2112	=item $kernel->set_ushort ($index, $value)
		2113
		2114	=item $kernel->set_int ($index, $value)
		2115
		2116	=item $kernel->set_uint ($index, $value)
		2117
		2118	=item $kernel->set_long ($index, $value)
		2119
		2120	=item $kernel->set_ulong ($index, $value)
		2121
		2122	=item $kernel->set_half ($index, $value)
		2123
		2124	=item $kernel->set_float ($index, $value)
		2125
		2126	=item $kernel->set_double ($index, $value)
		2127
		2128	=item $kernel->set_memory ($index, $value)
		2129
		2130	=item $kernel->set_buffer ($index, $value)
		2131
		2132	=item $kernel->set_image ($index, $value)
		2133
		2134	=item $kernel->set_sampler ($index, $value)
		2135
		2136	=item $kernel->set_local ($index, $value)
		2137
		2138	=item $kernel->set_event ($index, $value)
		2139
		2140	This is a family of methods to set the kernel argument with the number
		2141	C<$index> to the give C<$value>.
		2142
		2143	Chars and integers (including the half type) are specified as integers,
		2144	float and double as floating point values, memory/buffer/image must be
		2145	an object of that type or C<undef>, local-memory arguments are set by
		2146	specifying the size, and sampler and event must be objects of that type.
		2147
		2148	Note that C<set_memory> works for all memory objects (all types of buffers
		2149	and images) - the main purpose of the more specific C<set_TYPE> functions
		2150	is type checking.
		2151
		2152	Setting an argument for a kernel does NOT keep a reference to the object -
		2153	for example, if you set an argument to some image object, free the image,
		2154	and call the kernel, you will run into undefined behaviour.
		2155
		2156	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>
		2157
		2158	=back
		2159
		2160	=head2 THE OpenCL::Event CLASS
		2161
		2162	This is the superclass for all event objects (including OpenCL::UserEvent
		2163	objects).
		2164
		2165	=over 4
		2166
		2167	=item $ev->wait
		2168
		2169	Waits for the event to complete.
		2170
		2171	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
		2172
		2173	=item $ev->cb ($exec_callback_type, $callback->($event, $event_command_exec_status))
		2174
		2175	Adds a callback to the callback stack for the given event type. There is
		2176	no way to remove a callback again.
		2177
		2178	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html>
		2179
		2180	=item $packed_value = $ev->info ($name)
		2181
		2182	See C<< $platform->info >> for details.
		2183
		2184	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>
		2185
		2186	=for gengetinfo begin event
		2187
		2188	=item $queue = $event->command_queue
		2189
		2190	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_QUEUE> and returns the result.
		2191
		2192	=item $command_type = $event->command_type
		2193
		2194	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_TYPE> and returns the result.
		2195
		2196	=item $uint = $event->reference_count
		2197
		2198	Calls C<clGetEventInfo> with C<OpenCL::EVENT_REFERENCE_COUNT> and returns the result.
		2199
		2200	=item $uint = $event->command_execution_status
		2201
		2202	Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_EXECUTION_STATUS> and returns the result.
		2203
		2204	=item $ctx = $event->context
		2205
		2206	Calls C<clGetEventInfo> with C<OpenCL::EVENT_CONTEXT> and returns the result.
		2207
		2208	=for gengetinfo end event
		2209
		2210	=item $packed_value = $ev->profiling_info ($name)
1129		2211
1130	See C<< $platform->info >> for details.	2212	See C<< $platform->info >> for details.
1131		2213
1132	The reason this method is not called C<info> is that there already is an	2214	The reason this method is not called C<info> is that there already is an
1133	C<< ->info >> method.	2215	C<< ->info >> method.
1134		2216
1135	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
1136
1137	=for gengetinfo begin kernel_work_group
1138
1139
1140	=item $int = $kernel->work_group_size ($device)
1141
1142	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result(s).
1143
1144	=item @ints = $kernel->compile_work_group_size ($device)
1145
1146	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result(s).
1147
1148	=item $ulong = $kernel->local_mem_size ($device)
1149
1150	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result(s).
1151
1152	=item $int = $kernel->preferred_work_group_size_multiple ($device)
1153
1154	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result(s).
1155
1156	=item $ulong = $kernel->private_mem_size ($device)
1157
1158	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result(s).
1159
1160	=for gengetinfo end kernel_work_group
1161
1162	=item $kernel->set_TYPE ($index, $value)
1163
1164	This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>.
1165
1166	TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>,
1167	C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>,
1168	C<image2d>, C<image3d>, C<sampler> or C<event>.
1169
1170	Chars and integers (including the half type) are specified as integers,
1171	float and double as floating point values, memory/buffer/image2d/image3d
1172	must be an object of that type or C<undef>, and sampler and event must be
1173	objects of that type.
1174
1175	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>	2217	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProfilingInfo.html>
		2218
		2219	=for gengetinfo begin profiling
		2220
		2221	=item $ulong = $event->profiling_command_queued
		2222
		2223	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_QUEUED> and returns the result.
		2224
		2225	=item $ulong = $event->profiling_command_submit
		2226
		2227	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_SUBMIT> and returns the result.
		2228
		2229	=item $ulong = $event->profiling_command_start
		2230
		2231	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_START> and returns the result.
		2232
		2233	=item $ulong = $event->profiling_command_end
		2234
		2235	Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_END> and returns the result.
		2236
		2237	=for gengetinfo end profiling
1176		2238
1177	=back	2239	=back
1178		2240
1179	=head2 THE OpenCL::Event CLASS	2241	=head2 THE OpenCL::UserEvent CLASS
1180		2242
1181	This is the superclass for all event objects (including OpenCL::UserEvent	2243	This is a subclass of OpenCL::Event.
1182	objects).
1183		2244
1184	=over 4	2245	=over 4
1185		2246
1186	=item $ev->wait	2247	=item $ev->set_status ($execution_status)
1187		2248
1188	Waits for the event to complete.	2249	Sets the execution status of the user event. Can only be called once,
		2250	either with OpenCL::COMPLETE or a negative number as status.
1189		2251
		2252	execution_status: OpenCL::COMPLETE or a negative integer.
		2253
1190	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>	2254	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1191
1192	=item $packed_value = $ev->info ($name)
1193
1194	See C<< $platform->info >> for details.
1195
1196	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>
1197
1198	=for gengetinfo begin event
1199
1200
1201	=item $queue = $event->command_queue
1202
1203	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result(s).
1204
1205	=item $command_type = $event->command_type
1206
1207	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result(s).
1208
1209	=item $uint = $event->reference_count
1210
1211	Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result(s).
1212
1213	=item $uint = $event->command_execution_status
1214
1215	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result(s).
1216
1217	=item $ctx = $event->context
1218
1219	Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result(s).
1220
1221	=for gengetinfo end event
1222
1223	=item $packed_value = $ev->profiling_info ($name)
1224
1225	See C<< $platform->info >> for details.
1226
1227	The reason this method is not called C<info> is that there already is an
1228	C<< ->info >> method.
1229
1230	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProfilingInfo.html>
1231
1232	=for gengetinfo begin profiling
1233
1234
1235	=item $ulong = $event->profiling_command_queued
1236
1237	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result(s).
1238
1239	=item $ulong = $event->profiling_command_submit
1240
1241	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result(s).
1242
1243	=item $ulong = $event->profiling_command_start
1244
1245	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result(s).
1246
1247	=item $ulong = $event->profiling_command_end
1248
1249	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result(s).
1250
1251	=for gengetinfo end profiling
1252		2255
1253	=back	2256	=back
1254		2257
1255	=head2 THE OpenCL::UserEvent CLASS	2258	=head2 THE OpenCL::Mapped CLASS
1256		2259
1257	This is a subclass of OpenCL::Event.	2260	This class represents objects mapped into host memory. They are
		2261	represented by a blessed string scalar. The string data is the mapped
		2262	memory area, that is, if you read or write it, then the mapped object is
		2263	accessed directly.
		2264
		2265	You must only ever use operations that modify the string in-place - for
		2266	example, a C<substr> that doesn't change the length, or maybe a regex that
		2267	doesn't change the length. Any other operation might cause the data to be
		2268	copied.
		2269
		2270	When the object is destroyed it will enqueue an implicit unmap operation
		2271	on the queue that was used to create it.
		2272
		2273	Keep in mind that you I<need> to unmap (or destroy) mapped objects before
		2274	OpenCL sees the changes, even if some implementations don't need this
		2275	sometimes.
		2276
		2277	Example, replace the first two floats in the mapped buffer by 1 and 2.
		2278
		2279	my $mapped = $queue->map_buffer ($buf, ...
		2280	$mapped->event->wait; # make sure it's there
		2281
		2282	# now replace first 8 bytes by new data, which is exactly 8 bytes long
		2283	# we blindly assume device endianness to equal host endianness
		2284	# (and of course, we assume iee 754 single precision floats :)
		2285	substr $$mapped, 0, 8, pack "f*", 1, 2;
1258		2286
1259	=over 4	2287	=over 4
1260		2288
1261	=item $ev->set_status ($execution_status)	2289	=item $ev = $mapped->unmap ($wait_events...)
1262		2290
1263	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>	2291	Unmaps the mapped memory object, using the queue originally used to create
		2292	it, quite similarly to C<< $queue->unmap ($mapped, ...) >>.
		2293
		2294	=item $bool = $mapped->mapped
		2295
		2296	Returns whether the object is still mapped - true before an C<unmap> is
		2297	enqueued, false afterwards.
		2298
		2299	=item $ev = $mapped->event
		2300
		2301	Return the event object associated with the mapped object. Initially, this
		2302	will be the event object created when mapping the object, and after an
		2303	unmap, this will be the event object that the unmap operation created.
		2304
		2305	=item $mapped->wait
		2306
		2307	Same as C<< $mapped->event->wait >> - makes sure no operations on this
		2308	mapped object are outstanding.
		2309
		2310	=item $bytes = $mapped->size
		2311
		2312	Returns the size of the mapped area, in bytes. Same as C<length $$mapped>.
		2313
		2314	=item $ptr = $mapped->ptr
		2315
		2316	Returns the raw memory address of the mapped area.
		2317
		2318	=item $mapped->set ($offset, $data)
		2319
		2320	Replaces the data at the given C<$offset> in the memory area by the new
		2321	C<$data>. This method is safer than direct manipulation of C<$mapped>
		2322	because it does bounds-checking, but also slower.
		2323
		2324	=item $data = $mapped->get ($offset, $length)
		2325
		2326	Returns (without copying) a scalar representing the data at the given
		2327	C<$offset> and C<$length> in the mapped memory area. This is the same as
		2328	the following substr, except much slower;
		2329
		2330	$data = substr $$mapped, $offset, $length
		2331
		2332	=cut
		2333
		2334	sub OpenCL::Mapped::get {
		2335	substr ${$_[0]}, $_[1], $_[2]
		2336	}
1264		2337
1265	=back	2338	=back
1266		2339
		2340	=head2 THE OpenCL::MappedBuffer CLASS
		2341
		2342	This is a subclass of OpenCL::Mapped, representing mapped buffers.
		2343
		2344	=head2 THE OpenCL::MappedImage CLASS
		2345
		2346	This is a subclass of OpenCL::Mapped, representing mapped images.
		2347
		2348	=over 4
		2349
		2350	=item $pixels = $mapped->width
		2351
		2352	=item $pixels = $mapped->height
		2353
		2354	=item $pixels = $mapped->depth
		2355
		2356	Return the width/height/depth of the mapped image region, in pixels.
		2357
		2358	=item $bytes = $mapped->row_pitch
		2359
		2360	=item $bytes = $mapped->slice_pitch
		2361
		2362	Return the row or slice pitch of the image that has been mapped.
		2363
		2364	=item $bytes = $mapped->element_size
		2365
		2366	Return the size of a single pixel.
		2367
		2368	=item $data = $mapped->get_row ($count, $x=0, $y=0, $z=0)
		2369
		2370	Return C<$count> pixels from the given coordinates. The pixel data must
		2371	be completely contained within a single row.
		2372
		2373	If C<$count> is C<undef>, then all the remaining pixels in that row are
		2374	returned.
		2375
		2376	=item $mapped->set_row ($data, $x=0, $y=0, $z=0)
		2377
		2378	Write the given pixel data at the given coordinate. The pixel data must
		2379	be completely contained within a single row.
		2380
		2381	=back
		2382
1267	=cut	2383	=cut
1268
1269	package OpenCL;
1270
1271	use common::sense;
1272
1273	BEGIN {
1274	our $VERSION = '0.55';
1275
1276	require XSLoader;
1277	XSLoader::load (__PACKAGE__, $VERSION);
1278
1279	@OpenCL::Buffer::ISA =
1280	@OpenCL::Image::ISA = OpenCL::Memory::;
1281
1282	@OpenCL::Image2D::ISA =
1283	@OpenCL::Image3D::ISA = OpenCL::Image::;
1284
1285	@OpenCL::UserEvent::ISA = OpenCL::Event::;
1286	}
1287		2384
1288	1;	2385	1;
1289		2386
1290	=head1 AUTHOR	2387	=head1 AUTHOR
1291		2388

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