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

Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.4 by root, Tue Nov 15 21:16:19 2011 UTC vs.
Revision 1.25 by root, Tue Nov 22 10:39:47 2011 UTC

…		…
1	=head1 NAME	1	=head1 NAME
2		2
3	OpenCL - bindings to, well, OpenCL	3	OpenCL - Open Computing Language Bindings
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use OpenCL;	7	use OpenCL;
8		8
9	=head1 DESCRIPTION	9	=head1 DESCRIPTION
10		10
11	This is an early release which is not useful yet.	11	This is an early release which might be useful, but hasn't seen much testing.
12		12
		13	=head2 OpenCL FROM 10000 FEET HEIGHT
		14
		15	Here is a high level overview of OpenCL:
		16
		17	First you need to find one or more OpenCL::Platforms (kind of like
		18	vendors) - usually there is only one.
		19
		20	Each platform gives you access to a number of OpenCL::Device objects, e.g.
		21	your graphics card.
		22
		23	From a platform and some device(s), you create an OpenCL::Context, which is
		24	a very central object in OpenCL: Once you have a context you can create
		25	most other objects:
		26
		27	OpenCL::Program objects, which store source code and, after building for a
		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
		30	which represents basically a function call with argument values.
		31
		32	OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat
		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.
		35
		36	OpenCL::Sampler objects, which are kind of like texture filter modes in
		37	OpenGL.
		38
		39	OpenCL::Queue objects - command queues, which allow you to submit memory
		40	reads, writes and copies, as well as kernel calls to your devices. They
		41	also offer a variety of methods to synchronise request execution, for
		42	example with barriers or OpenCL::Event objects.
		43
		44	OpenCL::Event objects are used to signal when something is complete.
		45
13	=head1 HELPFUL RESOURCES	46	=head2 HELPFUL RESOURCES
14		47
15	The OpenCL spec used to dveelop this module (1.2 spec was available, but	48	The OpenCL spec used to develop this module (1.2 spec was available, but
16	no implementation was available to me :).	49	no implementation was available to me :).
17		50
18	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf	51	http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf
19		52
20	OpenCL manpages:	53	OpenCL manpages:
21		54
22	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/	55	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/
23		56
		57	If you are into UML class diagrams, the following diagram might help - if
		58	not, it will be mildly cobfusing:
		59
		60	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/classDiagram.html
		61
		62	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:
		64
		65	http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf
		66
		67	And here's NVIDIA's OpenCL Best Practises Guide:
		68
		69	http://developer.download.nvidia.com/compute/cuda/3_2/toolkit/docs/OpenCL_Best_Practices_Guide.pdf
		70
		71	=head1 BASIC WORKFLOW
		72
		73	To get something done, you basically have to do this once (refer to the
		74	examples below for actual code, this is just a high-level description):
		75
		76	Find some platform (e.g. the first one) and some device(s) (e.g. the first
		77	device of the platform), and create a context from those.
		78
		79	Create program objects from your OpenCL source code, then build (compile)
		80	the programs for each device you want to run them on.
		81
		82	Create kernel objects for all kernels you want to use (surprisingly, these
		83	are not device-specific).
		84
		85	Then, to execute stuff, you repeat these steps, possibly resuing or
		86	sharing some buffers:
		87
		88	Create some input and output buffers from your context. Set these as
		89	arguments to your kernel.
		90
		91	Enqueue buffer writes to initialise your input buffers (when not
		92	initialised at creation time).
		93
		94	Enqueue the kernel execution.
		95
		96	Enqueue buffer reads for your output buffer to read results.
		97
24	=head1 EXAMPLES	98	=head1 EXAMPLES
25		99
26	Enumerate all devices and get contexts for them;	100	=head2 Enumerate all devices and get contexts for them.
		101
		102	Best run this once to get a feel for the platforms and devices in your
		103	system.
27		104
28	for my $platform (OpenCL::platforms) {	105	for my $platform (OpenCL::platforms) {
29	warn $platform->info (OpenCL::PLATFORM_NAME);	106	printf "platform: %s\n", $platform->name;
30	warn $platform->info (OpenCL::PLATFORM_EXTENSIONS);	107	printf "extensions: %s\n", $platform->extensions;
31	for my $device ($platform->devices) {	108	for my $device ($platform->devices) {
32	warn $device->info (OpenCL::DEVICE_NAME);	109	printf "+ device: %s\n", $device->name;
33	my $ctx = $device->context_simple;	110	my $ctx = $device->context;
34	# do stuff	111	# do stuff
35	}	112	}
36	}	113	}
37		114
38	Get a useful context and a command queue:	115	=head2 Get a useful context and a command queue.
39		116
40	my $dev = ((OpenCL::platforms)[0]->devices)[0];	117	This is a useful boilerplate for any OpenCL program that only wants to use
41	my $ctx = $dev->context_simple;	118	one device,
42	my $queue = $ctx->command_queue_simple ($dev);
43		119
44	Create a buffer with some predefined data, read it back synchronously,	120	my ($platform) = OpenCL::platforms; # find first platform
45	then asynchronously:	121	my ($dev) = $platform->devices; # find first device of platform
		122	my $ctx = $platform->context (undef, [$dev]); # create context out of those
		123	my $queue = $ctx->queue ($dev); # create a command queue for the device
46		124
47	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");
48
49	$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data);
50	warn $data;
51
52	my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data);
53	$ev->wait;
54	warn $data;
55
56	Print all supported image formats:	125	=head2 Print all supported image formats of a context.
		126
		127	Best run this once for your context, to see whats available and how to
		128	gather information.
57		129
58	for my $type (OpenCL::MEM_OBJECT_IMAGE2D, OpenCL::MEM_OBJECT_IMAGE3D) {	130	for my $type (OpenCL::MEM_OBJECT_IMAGE2D, OpenCL::MEM_OBJECT_IMAGE3D) {
59	say "supported image formats for ", OpenCL::enum2str $type;	131	print "supported image formats for ", OpenCL::enum2str $type, "\n";
60		132
61	for my $f ($ctx->supported_image_formats (0, $type)) {	133	for my $f ($ctx->supported_image_formats (0, $type)) {
62	printf " %-10s %-20s\n", OpenCL::enum2str $f->[0], OpenCL::enum2str $f->[1];	134	printf " %-10s %-20s\n", OpenCL::enum2str $f->[0], OpenCL::enum2str $f->[1];
63	}	135	}
64	}	136	}
65		137
		138	=head2 Create a buffer with some predefined data, read it back synchronously,
		139	then asynchronously.
		140
		141	my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut");
		142
		143	$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data);
		144	print "$data\n";
		145
		146	my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data);
		147	$ev->wait;
		148	print "$data\n"; # prints "elm"
		149
66	Create and build a program, then create a kernel out of one of its	150	=head2 Create and build a program, then create a kernel out of one of its
67	functions:	151	functions.
68		152
69	my $src = '	153	my $src = '
70	__kernel void	154	__kernel void
71	squareit (__global float input, __global float output)	155	squareit (__global float input, __global float output)
72	{	156	{
73	size_t id = get_global_id (0);	157	$id = get_global_id (0);
74	output [id] = input [id] * input [id];	158	output [id] = input [id] * input [id];
75	}	159	}
76	';	160	';
77		161
78	my $prog = $ctx->program_with_source ($src);	162	my $prog = $ctx->program_with_source ($src);
79		163
		164	# build croaks on compile errors, so catch it and print the compile errors
80	eval { $prog->build ($dev); 1 }	165	eval { $prog->build ($dev); 1 }
81	or die $prog->build_info ($dev, OpenCL::PROGRAM_BUILD_LOG);	166	or die $prog->build_log;
82		167
83	my $kernel = $prog->kernel ("squareit");	168	my $kernel = $prog->kernel ("squareit");
84		169
85	Create some input and output float buffers, then call squareit on them:	170	=head2 Create some input and output float buffers, then call the
		171	'squareit' kernel on them.
86		172
87	my $input = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, pack "f*", 1, 2, 3, 4.5);	173	my $input = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, pack "f*", 1, 2, 3, 4.5);
88	my $output = $ctx->buffer (0, OpenCL::SIZEOF_FLOAT * 5);	174	my $output = $ctx->buffer (0, OpenCL::SIZEOF_FLOAT * 5);
89		175
90	# set buffer	176	# set buffer
92	$kernel->set_buffer (1, $output);	178	$kernel->set_buffer (1, $output);
93		179
94	# execute it for all 4 numbers	180	# execute it for all 4 numbers
95	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);	181	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);
96		182
97	# enqueue a barrier ot ensure in-order execution (not really needed in this case)	183	# enqueue a synchronous read
		184	$queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
		185
		186	# print the results:
		187	printf "%s\n", join ", ", unpack "f*", $data;
		188
		189	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
		190	showing off barriers.
		191
		192	# execute it for all 4 numbers
		193	$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);
		194
		195	# enqueue a barrier to ensure in-order execution
98	$queue->enqueue_barrier;	196	$queue->enqueue_barrier;
99		197
100	# enqueue an async read (could easily be blocking here though), then wait for it:	198	# enqueue an async read
		199	$queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);
		200
		201	# wait for all requests to finish
		202	$queue->finish;
		203
		204	=head2 The same enqueue operations as before, but assuming an out-of-order queue,
		205	showing off event objects and wait lists.
		206
		207	# execute it for all 4 numbers
		208	my $ev = $queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef);
		209
		210	# enqueue an async read
101	my $ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data);	211	$ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev);
		212
		213	# wait for the last event to complete
102	$ev->wait;	214	$ev->wait;
103		215
104	# print the results:	216	=head1 DOCUMENTATION
105	say join ", ", unpack "f*", $data;	217
		218	=head2 BASIC CONVENTIONS
		219
		220	This is not a one-to-one C-style translation of OpenCL to Perl - instead
		221	I attempted to make the interface as type-safe as possible by introducing
		222	object syntax where it makes sense. There are a number of important
		223	differences between the OpenCL C API and this module:
106		224
107	=over 4	225	=over 4
108		226
		227	=item * Object lifetime managament is automatic - there is no need
		228	to free objects explicitly (C<clReleaseXXX>), the release function
		229	is called automatically once all Perl references to it go away.
		230
		231	=item * OpenCL uses CamelCase for function names
		232	(e.g. C<clGetPlatformIDs>, C<clGetPlatformInfo>), while this module
		233	uses underscores as word separator and often leaves out prefixes
		234	(C<OpenCL::platforms>, C<< $platform->info >>).
		235
		236	=item * OpenCL often specifies fixed vector function arguments as short
		237	arrays (C<size_t origin[3]>), while this module explicitly expects the
		238	components as separate arguments (C<$orig_x, $orig_y, $orig_z>) in
		239	function calls.
		240
		241	=item * Structures are often specified by flattening out their components
		242	as with short vectors, and returned as arrayrefs.
		243
		244	=item * When enqueuing commands, the wait list is specified by adding
		245	extra arguments to the function - anywhere a C<$wait_events...> argument
		246	is documented this can be any number of event objects.
		247
		248	=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
		250	by the method.
		251
		252	=item * This module expects all functions to return C<CL_SUCCESS>. If any
		253	other status is returned the function will throw an exception, so you
		254	don't normally have to to any error checking.
		255
		256	=back
		257
		258	=head2 PERL AND OPENCL TYPES
		259
		260	This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack
		261	format equivalents:
		262
		263	OpenCL perl PDL pack/unpack
		264	char IV - c
		265	uchar IV byte C
		266	short IV short s
		267	ushort IV ushort S
		268	int IV long? l
		269	uint IV - L
		270	long IV longlong q
		271	ulong IV - Q
		272	float NV float f
		273	half IV ushort S
		274	double NV double d
		275
		276	=head2 THE OpenCL PACKAGE
		277
		278	=over 4
		279
		280	=item $int = OpenCL::errno
		281
		282	The last error returned by a function - it's only valid after an error occured
		283	and before calling another OpenCL function.
		284
		285	=item $str = OpenCL::err2str $errval
		286
		287	Comverts an error value into a human readable string.
		288
		289	=item $str = OpenCL::enum2str $enum
		290
		291	Converts most enum values (inof parameter names, image format constants,
		292	object types, addressing and filter modes, command types etc.) into a
		293	human readbale string. When confronted with some random integer it can be
		294	very helpful to pass it through this function to maybe get some readable
		295	string out of it.
		296
		297	=item @platforms = OpenCL::platforms
		298
		299	Returns all available OpenCL::Platform objects.
		300
		301	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
		302
		303	=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef
		304
		305	Tries to create a context from a default device and platform - never worked for me.
		306
		307	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
		308
		309	=item OpenCL::wait_for_events $wait_events...
		310
		311	Waits for all events to complete.
		312
		313	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
		314
		315	=back
		316
		317	=head2 THE OpenCL::Platform CLASS
		318
		319	=over 4
		320
		321	=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL)
		322
		323	Returns a list of matching OpenCL::Device objects.
		324
		325	=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef)
		326
		327	Tries to create a context. Never worked for me, and you need devices explicitly anyway.
		328
		329	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
		330
		331	=item $ctx = $device->context ($properties = undef, @$devices, $notify = undef)
		332
		333	Create a new OpenCL::Context object using the given device object(s)- a
		334	CL_CONTEXT_PLATFORM property is supplied automatically.
		335
		336	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
		337
		338	=item $packed_value = $platform->info ($name)
		339
		340	Calls C<clGetPlatformInfo> and returns the packed, raw value - for
		341	strings, this will be the string (possibly including terminating \0), for
		342	other values you probably need to use the correct C<unpack>.
		343
		344	It's best to avoid this method and use one of the following convenience
		345	wrappers.
		346
		347	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html>
		348
		349	=for gengetinfo begin platform
		350
		351	=item $string = $platform->profile
		352
		353	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result.
		354
		355	=item $string = $platform->version
		356
		357	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result.
		358
		359	=item $string = $platform->name
		360
		361	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result.
		362
		363	=item $string = $platform->vendor
		364
		365	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result.
		366
		367	=item $string = $platform->extensions
		368
		369	Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result.
		370
		371	=for gengetinfo end platform
		372
		373	=back
		374
		375	=head2 THE OpenCL::Device CLASS
		376
		377	=over 4
		378
		379	=item $packed_value = $device->info ($name)
		380
		381	See C<< $platform->info >> for details.
		382
		383	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>
		384
		385	=for gengetinfo begin device
		386
		387	=item $device_type = $device->type
		388
		389	Calls C<clGetDeviceInfo> with C<CL_DEVICE_TYPE> and returns the result.
		390
		391	=item $uint = $device->vendor_id
		392
		393	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR_ID> and returns the result.
		394
		395	=item $uint = $device->max_compute_units
		396
		397	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_COMPUTE_UNITS> and returns the result.
		398
		399	=item $uint = $device->max_work_item_dimensions
		400
		401	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.
		402
		403	=item $int = $device->max_work_group_size
		404
		405	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.
		406
		407	=item @ints = $device->max_work_item_sizes
		408
		409	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.
		410
		411	=item $uint = $device->preferred_vector_width_char
		412
		413	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.
		414
		415	=item $uint = $device->preferred_vector_width_short
		416
		417	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.
		418
		419	=item $uint = $device->preferred_vector_width_int
		420
		421	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.
		422
		423	=item $uint = $device->preferred_vector_width_long
		424
		425	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.
		426
		427	=item $uint = $device->preferred_vector_width_float
		428
		429	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.
		430
		431	=item $uint = $device->preferred_vector_width_double
		432
		433	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.
		434
		435	=item $uint = $device->max_clock_frequency
		436
		437	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.
		438
		439	=item $bitfield = $device->address_bits
		440
		441	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ADDRESS_BITS> and returns the result.
		442
		443	=item $uint = $device->max_read_image_args
		444
		445	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.
		446
		447	=item $uint = $device->max_write_image_args
		448
		449	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.
		450
		451	=item $ulong = $device->max_mem_alloc_size
		452
		453	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.
		454
		455	=item $int = $device->image2d_max_width
		456
		457	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.
		458
		459	=item $int = $device->image2d_max_height
		460
		461	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.
		462
		463	=item $int = $device->image3d_max_width
		464
		465	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.
		466
		467	=item $int = $device->image3d_max_height
		468
		469	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.
		470
		471	=item $int = $device->image3d_max_depth
		472
		473	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.
		474
		475	=item $uint = $device->image_support
		476
		477	Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE_SUPPORT> and returns the result.
		478
		479	=item $int = $device->max_parameter_size
		480
		481	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_PARAMETER_SIZE> and returns the result.
		482
		483	=item $uint = $device->max_samplers
		484
		485	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_SAMPLERS> and returns the result.
		486
		487	=item $uint = $device->mem_base_addr_align
		488
		489	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.
		490
		491	=item $uint = $device->min_data_type_align_size
		492
		493	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.
		494
		495	=item $device_fp_config = $device->single_fp_config
		496
		497	Calls C<clGetDeviceInfo> with C<CL_DEVICE_SINGLE_FP_CONFIG> and returns the result.
		498
		499	=item $device_mem_cache_type = $device->global_mem_cache_type
		500
		501	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.
		502
		503	=item $uint = $device->global_mem_cacheline_size
		504
		505	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.
		506
		507	=item $ulong = $device->global_mem_cache_size
		508
		509	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.
		510
		511	=item $ulong = $device->global_mem_size
		512
		513	Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_SIZE> and returns the result.
		514
		515	=item $ulong = $device->max_constant_buffer_size
		516
		517	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.
		518
		519	=item $uint = $device->max_constant_args
		520
		521	Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_ARGS> and returns the result.
		522
		523	=item $device_local_mem_type = $device->local_mem_type
		524
		525	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_TYPE> and returns the result.
		526
		527	=item $ulong = $device->local_mem_size
		528
		529	Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_SIZE> and returns the result.
		530
		531	=item $boolean = $device->error_correction_support
		532
		533	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.
		534
		535	=item $int = $device->profiling_timer_resolution
		536
		537	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.
		538
		539	=item $boolean = $device->endian_little
		540
		541	Calls C<clGetDeviceInfo> with C<CL_DEVICE_ENDIAN_LITTLE> and returns the result.
		542
		543	=item $boolean = $device->available
		544
		545	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AVAILABLE> and returns the result.
		546
		547	=item $boolean = $device->compiler_available
		548
		549	Calls C<clGetDeviceInfo> with C<CL_DEVICE_COMPILER_AVAILABLE> and returns the result.
		550
		551	=item $device_exec_capabilities = $device->execution_capabilities
		552
		553	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXECUTION_CAPABILITIES> and returns the result.
		554
		555	=item $command_queue_properties = $device->properties
		556
		557	Calls C<clGetDeviceInfo> with C<CL_DEVICE_QUEUE_PROPERTIES> and returns the result.
		558
		559	=item $ = $device->platform
		560
		561	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PLATFORM> and returns the result.
		562
		563	=item $string = $device->name
		564
		565	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NAME> and returns the result.
		566
		567	=item $string = $device->vendor
		568
		569	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR> and returns the result.
		570
		571	=item $string = $device->driver_version
		572
		573	Calls C<clGetDeviceInfo> with C<CL_DRIVER_VERSION> and returns the result.
		574
		575	=item $string = $device->profile
		576
		577	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILE> and returns the result.
		578
		579	=item $string = $device->version
		580
		581	Calls C<clGetDeviceInfo> with C<CL_DEVICE_VERSION> and returns the result.
		582
		583	=item $string = $device->extensions
		584
		585	Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXTENSIONS> and returns the result.
		586
		587	=item $uint = $device->preferred_vector_width_half
		588
		589	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.
		590
		591	=item $uint = $device->native_vector_width_char
		592
		593	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.
		594
		595	=item $uint = $device->native_vector_width_short
		596
		597	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.
		598
		599	=item $uint = $device->native_vector_width_int
		600
		601	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.
		602
		603	=item $uint = $device->native_vector_width_long
		604
		605	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.
		606
		607	=item $uint = $device->native_vector_width_float
		608
		609	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.
		610
		611	=item $uint = $device->native_vector_width_double
		612
		613	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.
		614
		615	=item $uint = $device->native_vector_width_half
		616
		617	Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.
		618
		619	=item $device_fp_config = $device->double_fp_config
		620
		621	Calls C<clGetDeviceInfo> with C<CL_DEVICE_DOUBLE_FP_CONFIG> and returns the result.
		622
		623	=item $device_fp_config = $device->half_fp_config
		624
		625	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HALF_FP_CONFIG> and returns the result.
		626
		627	=item $boolean = $device->host_unified_memory
		628
		629	Calls C<clGetDeviceInfo> with C<CL_DEVICE_HOST_UNIFIED_MEMORY> and returns the result.
		630
		631	=item $device = $device->parent_device_ext
		632
		633	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARENT_DEVICE_EXT> and returns the result.
		634
		635	=item @device_partition_property_exts = $device->partition_types_ext
		636
		637	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_TYPES_EXT> and returns the result.
		638
		639	=item @device_partition_property_exts = $device->affinity_domains_ext
		640
		641	Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.
		642
		643	=item $uint = $device->reference_count_ext
		644
		645	Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT > and returns the result.
		646
		647	=item @device_partition_property_exts = $device->partition_style_ext
		648
		649	Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result.
		650
		651	=for gengetinfo end device
		652
		653	=back
		654
		655	=head2 THE OpenCL::Context CLASS
		656
		657	=over 4
		658
		659	=item $queue = $ctx->queue ($device, $properties)
		660
		661	Create a new OpenCL::Queue object from the context and the given device.
		662
		663	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html>
		664
		665	=item $ev = $ctx->user_event
		666
		667	Creates a new OpenCL::UserEvent object.
		668
		669	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateUserEvent.html>
		670
		671	=item $buf = $ctx->buffer ($flags, $len)
		672
		673	Creates a new OpenCL::Buffer object with the given flags and octet-size.
		674
		675	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>
		676
		677	=item $buf = $ctx->buffer_sv ($flags, $data)
		678
		679	Creates a new OpenCL::Buffer object and initialise it with the given data values.
		680
		681	=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)
		682
		683	Creates a new OpenCL::Image2D object and optionally initialises it with the given data values.
		684
		685	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html>
		686
		687	=item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $row_pitch = 0, $slice_pitch = 0, $data = undef)
		688
		689	Creates a new OpenCL::Image3D object and optionally initialises it with the given data values.
		690
		691	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html>
		692
		693	=item @formats = $ctx->supported_image_formats ($flags, $image_type)
		694
		695	Returns a list of matching image formats - each format is an arrayref with
		696	two values, $channel_order and $channel_type, in it.
		697
		698	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSupportedImageFormats.html>
		699
		700	=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)
		701
		702	Creates a new OpenCL::Sampler object.
		703
		704	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>
		705
		706	=item $program = $ctx->program_with_source ($string)
		707
		708	Creates a new OpenCL::Program object from the given source code.
		709
		710	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>
		711
		712	=item $packed_value = $ctx->info ($name)
		713
		714	See C<< $platform->info >> for details.
		715
		716	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>
		717
		718	=for gengetinfo begin context
		719
		720	=item $uint = $context->reference_count
		721
		722	Calls C<clGetContextInfo> with C<CL_CONTEXT_REFERENCE_COUNT> and returns the result.
		723
		724	=item @devices = $context->devices
		725
		726	Calls C<clGetContextInfo> with C<CL_CONTEXT_DEVICES> and returns the result.
		727
		728	=item @property_ints = $context->properties
		729
		730	Calls C<clGetContextInfo> with C<CL_CONTEXT_PROPERTIES> and returns the result.
		731
		732	=item $uint = $context->num_devices
		733
		734	Calls C<clGetContextInfo> with C<CL_CONTEXT_NUM_DEVICES> and returns the result.
		735
		736	=for gengetinfo end context
		737
		738	=back
		739
		740	=head2 THE OpenCL::Queue CLASS
		741
		742	An OpenCL::Queue represents an execution queue for OpenCL. You execute
		743	requests by calling their respective C<enqueue_xxx> method and waitinf for
		744	it to complete in some way.
		745
		746	All the enqueue methods return an event object that can be used to wait
		747	for completion, unless the method is called in void context, in which case
		748	no event object is created.
		749
		750	They also allow you to specify any number of other event objects that this
		751	request has to wait for before it starts executing, by simply passing the
		752	event objects as extra parameters to the enqueue methods.
		753
		754	Queues execute in-order by default, without any parallelism, so in most
		755	cases (i.e. you use only one queue) it's not necessary to wait for or
		756	create event objects.
		757
		758	=over 4
		759
		760	=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...)
		761
		762	Reads data from buffer into the given string.
		763
		764	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html>
		765
		766	=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...)
		767
		768	Writes data to buffer from the given string.
		769
		770	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html>
		771
		772	=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...)
		773
		774	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html>
		775
		776	=item $ev = $queue->enqueue_read_buffer_rect (OpenCL::Memory buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...)
		777
		778	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html
		779
		780	=item $ev = $queue->enqueue_write_buffer_rect (OpenCL::Memory buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...)
		781
		782	http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html
		783
		784	=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
		785
		786	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html>
		787
		788	=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...)
		789
		790	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html>
		791
		792	=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...)
		793
		794	Yeah.
		795
		796	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html>
		797
		798	=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...)
		799
		800	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>.
		801
		802	=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...)
		803
		804	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html>
		805
		806	=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...)
		807
		808	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html>
		809
		810	=item $ev = $queue->enqueue_task ($kernel, $wait_events...)
		811
		812	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html>
		813
		814	=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...)
		815
		816	Enqueues a kernel execution.
		817
		818	@$global_work_size must be specified as a reference to an array of
		819	integers specifying the work sizes (element counts).
		820
		821	@$global_work_offset must be either C<undef> (in which case all offsets
		822	are C<0>), or a reference to an array of work offsets, with the same number
		823	of elements as @$global_work_size.
		824
		825	@$local_work_size must be either C<undef> (in which case the
		826	implementation is supposed to choose good local work sizes), or a
		827	reference to an array of local work sizes, with the same number of
		828	elements as @$global_work_size.
		829
		830	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
		831
		832	=item $ev = $queue->enqueue_marker
		833
		834	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMarker.html>
		835
		836	=item $ev = $queue->enqueue_wait_for_events ($wait_events...)
		837
		838	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html>
		839
		840	=item $queue->enqueue_barrier
		841
		842	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueBarrier.html>
		843
		844	=item $queue->flush
		845
		846	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html>
		847
		848	=item $queue->finish
		849
		850	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFinish.html>
		851
		852	=item $packed_value = $queue->info ($name)
		853
		854	See C<< $platform->info >> for details.
		855
		856	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetCommandQueueInfo.html>
		857
		858	=for gengetinfo begin command_queue
		859
		860	=item $ctx = $command_queue->context
		861
		862	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_CONTEXT> and returns the result.
		863
		864	=item $device = $command_queue->device
		865
		866	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_DEVICE> and returns the result.
		867
		868	=item $uint = $command_queue->reference_count
		869
		870	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_REFERENCE_COUNT> and returns the result.
		871
		872	=item $command_queue_properties = $command_queue->properties
		873
		874	Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_PROPERTIES> and returns the result.
		875
		876	=for gengetinfo end command_queue
		877
		878	=back
		879
		880	=head2 THE OpenCL::Memory CLASS
		881
		882	This the superclass of all memory objects - OpenCL::Buffer, OpenCL::Image,
		883	OpenCL::Image2D and OpenCL::Image3D.
		884
		885	=over 4
		886
		887	=item $packed_value = $memory->info ($name)
		888
		889	See C<< $platform->info >> for details.
		890
		891	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html>
		892
		893	=for gengetinfo begin mem
		894
		895	=item $mem_object_type = $mem->type
		896
		897	Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result.
		898
		899	=item $mem_flags = $mem->flags
		900
		901	Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result.
		902
		903	=item $int = $mem->size
		904
		905	Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result.
		906
		907	=item $ptr_value = $mem->host_ptr
		908
		909	Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result.
		910
		911	=item $uint = $mem->map_count
		912
		913	Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result.
		914
		915	=item $uint = $mem->reference_count
		916
		917	Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result.
		918
		919	=item $ctx = $mem->context
		920
		921	Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result.
		922
		923	=item $mem = $mem->associated_memobject
		924
		925	Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result.
		926
		927	=item $int = $mem->offset
		928
		929	Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result.
		930
		931	=for gengetinfo end mem
		932
		933	=back
		934
		935	=head2 THE OpenCL::Image CLASS
		936
		937	This is the superclass of all image objects - OpenCL::Image2D and OpenCL::Image3D.
		938
		939	=over 4
		940
		941	=item $packed_value = $ev->image_info ($name)
		942
		943	See C<< $platform->info >> for details.
		944
		945	The reason this method is not called C<info> is that there already is an
		946	C<< ->info >> method inherited from C<OpenCL::Memory>.
		947
		948	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
		949
		950	=for gengetinfo begin image
		951
		952	=item $int = $image->element_size
		953
		954	Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result.
		955
		956	=item $int = $image->row_pitch
		957
		958	Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result.
		959
		960	=item $int = $image->slice_pitch
		961
		962	Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result.
		963
		964	=item $int = $image->width
		965
		966	Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result.
		967
		968	=item $int = $image->height
		969
		970	Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result.
		971
		972	=item $int = $image->depth
		973
		974	Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result.
		975
		976	=for gengetinfo end image
		977
		978	=back
		979
		980	=head2 THE OpenCL::Sampler CLASS
		981
		982	=over 4
		983
		984	=item $packed_value = $sampler->info ($name)
		985
		986	See C<< $platform->info >> for details.
		987
		988	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html>
		989
		990	=for gengetinfo begin sampler
		991
		992	=item $uint = $sampler->reference_count
		993
		994	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result.
		995
		996	=item $ctx = $sampler->context
		997
		998	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result.
		999
		1000	=item $addressing_mode = $sampler->normalized_coords
		1001
		1002	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result.
		1003
		1004	=item $filter_mode = $sampler->addressing_mode
		1005
		1006	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result.
		1007
		1008	=item $boolean = $sampler->filter_mode
		1009
		1010	Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result.
		1011
		1012	=for gengetinfo end sampler
		1013
		1014	=back
		1015
		1016	=head2 THE OpenCL::Program CLASS
		1017
		1018	=over 4
		1019
		1020	=item $program->build ($device, $options = "")
		1021
		1022	Tries to build the program with the givne options.
		1023
		1024	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
		1025
		1026	=item $packed_value = $program->build_info ($device, $name)
		1027
		1028	Similar to C<< $platform->info >>, but returns build info for a previous
		1029	build attempt for the given device.
		1030
		1031	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>
		1032
		1033	=item $kernel = $program->kernel ($function_name)
		1034
		1035	Creates an OpenCL::Kernel object out of the named C<__kernel> function in
		1036	the program.
		1037
		1038	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html>
		1039
		1040	=for gengetinfo begin program_build
		1041
		1042	=item $build_status = $program->build_status ($device)
		1043
		1044	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result.
		1045
		1046	=item $string = $program->build_options ($device)
		1047
		1048	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result.
		1049
		1050	=item $string = $program->build_log ($device)
		1051
		1052	Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result.
		1053
		1054	=for gengetinfo end program_build
		1055
		1056	=item $packed_value = $program->info ($name)
		1057
		1058	See C<< $platform->info >> for details.
		1059
		1060	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html>
		1061
		1062	=for gengetinfo begin program
		1063
		1064	=item $uint = $program->reference_count
		1065
		1066	Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result.
		1067
		1068	=item $ctx = $program->context
		1069
		1070	Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result.
		1071
		1072	=item $uint = $program->num_devices
		1073
		1074	Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result.
		1075
		1076	=item @devices = $program->devices
		1077
		1078	Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result.
		1079
		1080	=item $string = $program->source
		1081
		1082	Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result.
		1083
		1084	=item @ints = $program->binary_sizes
		1085
		1086	Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result.
		1087
		1088	=for gengetinfo end program
		1089
		1090	=item @blobs = $program->binaries
		1091
		1092	Returns a string for the compiled binary for every device associated with
		1093	the program, empty strings indicate missing programs, and an empty result
		1094	means no program binaries are available.
		1095
		1096	These "binaries" are often, in fact, informative low-level assembly
		1097	sources.
		1098
		1099	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html>
		1100
		1101	=back
		1102
		1103	=head2 THE OpenCL::Kernel CLASS
		1104
		1105	=over 4
		1106
		1107	=item $packed_value = $kernel->info ($name)
		1108
		1109	See C<< $platform->info >> for details.
		1110
		1111	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html>
		1112
		1113	=for gengetinfo begin kernel
		1114
		1115	=item $string = $kernel->function_name
		1116
		1117	Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result.
		1118
		1119	=item $uint = $kernel->num_args
		1120
		1121	Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result.
		1122
		1123	=item $uint = $kernel->reference_count
		1124
		1125	Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result.
		1126
		1127	=item $ctx = $kernel->context
		1128
		1129	Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result.
		1130
		1131	=item $program = $kernel->program
		1132
		1133	Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result.
		1134
		1135	=for gengetinfo end kernel
		1136
		1137	=item $packed_value = $kernel->work_group_info ($device, $name)
		1138
		1139	See C<< $platform->info >> for details.
		1140
		1141	The reason this method is not called C<info> is that there already is an
		1142	C<< ->info >> method.
		1143
		1144	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
		1145
		1146	=for gengetinfo begin kernel_work_group
		1147
		1148	=item $int = $kernel->work_group_size ($device)
		1149
		1150	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result.
		1151
		1152	=item @ints = $kernel->compile_work_group_size ($device)
		1153
		1154	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.
		1155
		1156	=item $ulong = $kernel->local_mem_size ($device)
		1157
		1158	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result.
		1159
		1160	=item $int = $kernel->preferred_work_group_size_multiple ($device)
		1161
		1162	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.
		1163
		1164	=item $ulong = $kernel->private_mem_size ($device)
		1165
		1166	Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result.
		1167
		1168	=for gengetinfo end kernel_work_group
		1169
		1170	=item $kernel->set_TYPE ($index, $value)
		1171
		1172	This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>.
		1173
		1174	TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>,
		1175	C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>,
		1176	C<image2d>, C<image3d>, C<sampler> or C<event>.
		1177
		1178	Chars and integers (including the half type) are specified as integers,
		1179	float and double as floating point values, memory/buffer/image2d/image3d
		1180	must be an object of that type or C<undef>, and sampler and event must be
		1181	objects of that type.
		1182
		1183	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html>
		1184
		1185	=back
		1186
		1187	=head2 THE OpenCL::Event CLASS
		1188
		1189	This is the superclass for all event objects (including OpenCL::UserEvent
		1190	objects).
		1191
		1192	=over 4
		1193
		1194	=item $ev->wait
		1195
		1196	Waits for the event to complete.
		1197
		1198	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html>
		1199
		1200	=item $packed_value = $ev->info ($name)
		1201
		1202	See C<< $platform->info >> for details.
		1203
		1204	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html>
		1205
		1206	=for gengetinfo begin event
		1207
		1208	=item $queue = $event->command_queue
		1209
		1210	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result.
		1211
		1212	=item $command_type = $event->command_type
		1213
		1214	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result.
		1215
		1216	=item $uint = $event->reference_count
		1217
		1218	Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result.
		1219
		1220	=item $uint = $event->command_execution_status
		1221
		1222	Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result.
		1223
		1224	=item $ctx = $event->context
		1225
		1226	Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result.
		1227
		1228	=for gengetinfo end event
		1229
		1230	=item $packed_value = $ev->profiling_info ($name)
		1231
		1232	See C<< $platform->info >> for details.
		1233
		1234	The reason this method is not called C<info> is that there already is an
		1235	C<< ->info >> method.
		1236
		1237	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProfilingInfo.html>
		1238
		1239	=for gengetinfo begin profiling
		1240
		1241	=item $ulong = $event->profiling_command_queued
		1242
		1243	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result.
		1244
		1245	=item $ulong = $event->profiling_command_submit
		1246
		1247	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result.
		1248
		1249	=item $ulong = $event->profiling_command_start
		1250
		1251	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result.
		1252
		1253	=item $ulong = $event->profiling_command_end
		1254
		1255	Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result.
		1256
		1257	=for gengetinfo end profiling
		1258
		1259	=back
		1260
		1261	=head2 THE OpenCL::UserEvent CLASS
		1262
		1263	This is a subclass of OpenCL::Event.
		1264
		1265	=over 4
		1266
		1267	=item $ev->set_status ($execution_status)
		1268
		1269	L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
		1270
		1271	=back
		1272
109	=cut	1273	=cut
110		1274
111	package OpenCL;	1275	package OpenCL;
112		1276
113	use common::sense;	1277	use common::sense;
114		1278
115	BEGIN {	1279	BEGIN {
116	our $VERSION = '0.02';	1280	our $VERSION = '0.55';
117		1281
118	require XSLoader;	1282	require XSLoader;
119	XSLoader::load (__PACKAGE__, $VERSION);	1283	XSLoader::load (__PACKAGE__, $VERSION);
120		1284
121	@OpenCL::Buffer::ISA =	1285	@OpenCL::Buffer::ISA =
122	@OpenCL::Image::ISA = OpenCL::Memory::;	1286	@OpenCL::Image::ISA = OpenCL::Memory::;
123		1287
124	@OpenCL::Image2D::ISA =	1288	@OpenCL::Image2D::ISA =
125	@OpenCL::Image3D::ISA = OpenCL::Image::;	1289	@OpenCL::Image3D::ISA = OpenCL::Image::;
		1290
		1291	@OpenCL::UserEvent::ISA = OpenCL::Event::;
126	}	1292	}
127		1293
128	1;	1294	1;
129
130	=back
131		1295
132	=head1 AUTHOR	1296	=head1 AUTHOR
133		1297
134	Marc Lehmann <schmorp@schmorp.de>	1298	Marc Lehmann <schmorp@schmorp.de>
135	http://home.schmorp.de/	1299	http://home.schmorp.de/

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Comparing OpenCL/OpenCL.pm (file contents): Revision 1.4 by root, Tue Nov 15 21:16:19 2011 UTC vs. Revision 1.25 by root, Tue Nov 22 10:39:47 2011 UTC

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Comparing OpenCL/OpenCL.pm (file contents):
Revision 1.4 by root, Tue Nov 15 21:16:19 2011 UTC vs.
Revision 1.25 by root, Tue Nov 22 10:39:47 2011 UTC