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Revision 1.65 by root, Mon Apr 30 23:35:16 2012 UTC vs.
Revision 1.82 by root, Sat May 5 14:18:35 2012 UTC

… …
28specific device ("compiling and linking"), also binary programs. For each 28specific device ("compiling and linking"), also binary programs. For each
29kernel function in a program you can then create an OpenCL::Kernel object 29kernel function in a program you can then create an OpenCL::Kernel object
30which represents basically a function call with argument values. 30which represents basically a function call with argument values.
31 31
32OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat 32OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat
33memory areas, think arrays or structs) and OpenCL::Image objects (think 2d 33memory areas, think arrays or structs) and OpenCL::Image objects (think 2D
34or 3d array) for bulk data and input and output for kernels. 34or 3D array) for bulk data and input and output for kernels.
35 35
36OpenCL::Sampler objects, which are kind of like texture filter modes in 36OpenCL::Sampler objects, which are kind of like texture filter modes in
37OpenGL. 37OpenGL.
38 38
39OpenCL::Queue objects - command queues, which allow you to submit memory 39OpenCL::Queue objects - command queues, which allow you to submit memory
… …
43 43
44OpenCL::Event objects are used to signal when something is complete. 44OpenCL::Event objects are used to signal when something is complete.
45 45
46=head2 HELPFUL RESOURCES 46=head2 HELPFUL RESOURCES
47 47
48The OpenCL specs used to develop this module: 48The OpenCL specs used to develop this module - download these and keept
49hema round, they are required reference material:
49 50
50 http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf 51 http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf
51 http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf 52 http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf
52 http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf 53 http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf
53 54
… …
210 211
211 # wait for the last event to complete 212 # wait for the last event to complete
212 $ev->wait; 213 $ev->wait;
213 214
214=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia 215=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia
215set tunnel effect. 216set flight effect.
216 217
217This is quite a long example to get you going - you can download it from 218This is quite a long example to get you going - you can also download it
218L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>. 219from L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>.
219 220
220 use OpenGL ":all"; 221 use OpenGL ":all";
221 use OpenCL; 222 use OpenCL;
222 223
223 my $S = $ARGV[0] || 256; # window/texture size, smaller is faster 224 my $S = $ARGV[0] || 256; # window/texture size, smaller is faster
… …
305 glXSwapBuffers; 306 glXSwapBuffers;
306 307
307 select undef, undef, undef, 1/60; 308 select undef, undef, undef, 1/60;
308 } 309 }
309 310
310=item How to modify the previous example to not rely on GL sharing. 311=head2 How to modify the previous example to not rely on GL sharing.
311 312
312For those poor souls with only a sucky CPU OpenCL implementation, you 313For those poor souls with only a sucky CPU OpenCL implementation, you
313currently have to read the image into some perl scalar, and then modify a 314currently have to read the image into some perl scalar, and then modify a
314texture or use glDrawPixels or so). 315texture or use glDrawPixels or so).
315 316
… …
320To use a texture, you would modify the above example by creating an 321To use a texture, you would modify the above example by creating an
321OpenCL::Image manually instead of deriving it from a texture: 322OpenCL::Image manually instead of deriving it from a texture:
322 323
323 my $tex = $ctx->image2d (OpenCL::MEM_WRITE_ONLY, OpenCL::RGBA, OpenCL::UNORM_INT8, $S, $S); 324 my $tex = $ctx->image2d (OpenCL::MEM_WRITE_ONLY, OpenCL::RGBA, OpenCL::UNORM_INT8, $S, $S);
324 325
325And in the darw loop, intead of acquire_gl_objects/release_gl_objects, you 326And in the draw loop, intead of acquire_gl_objects/release_gl_objects, you
326would read the image2d after the kernel has written it: 327would read the image2d after the kernel has written it:
327 328
328 $queue->read_image ($tex, 0, 0, 0, 0, $S, $S, 1, 0, 0, my $data); 329 $queue->read_image ($tex, 0, 0, 0, 0, $S, $S, 1, 0, 0, my $data);
329 330
330And then you would upload the pixel data to the texture (or use glDrawPixels): 331And then you would upload the pixel data to the texture (or use glDrawPixels):
331 332
332 glTexSubImage2D_s GL_TEXTURE_2D, 0, 0, 0, $S, $S, GL_RGBA, GL_UNSIGNED_BYTE, $data; 333 glTexSubImage2D_s GL_TEXTURE_2D, 0, 0, 0, $S, $S, GL_RGBA, GL_UNSIGNED_BYTE, $data;
333 334
334The fully modified example can be found at 335The fully modified example can be found at
335L<http://cvs.schmorp.de/OpenCL/examples/juliaflight-nosharing>. 336L<http://cvs.schmorp.de/OpenCL/examples/juliaflight-nosharing>.
337
338=head2 Julia sets look soooo 80ies.
339
340Then colour them differently, e.g. using orbit traps! Replace the loop and
341colour 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
353Also try C<-10.f> instead of C<-1.f>.
336 354
337=head1 DOCUMENTATION 355=head1 DOCUMENTATION
338 356
339=head2 BASIC CONVENTIONS 357=head2 BASIC CONVENTIONS
340 358
… …
370 388
371=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
372context, no event is created. In all other contexts an event is returned 390context, no event is created. In all other contexts an event is returned
373by the method. 391by the method.
374 392
375=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
376other status is returned the function will throw an exception, so you 394other status is returned the function will throw an exception, so you
377don't normally have to to any error checking. 395don't normally have to to any error checking.
378 396
379=back 397=back
398
399=head2 CONSTANTS
400
401All C<CL_xxx> constants that this module supports are always available
402in the C<OpenCL> namespace as C<OpenCL::xxx> (i.e. without the C<CL_>
403prefix). Constants which are not defined in the header files used during
404compilation, or otherwise are not available, will have the value C<-1>.
405
406The latest version of this module knows and exports the constants
407listed in L<http://cvs.schmorp.de/OpenCL/constiv.h>.
408
409=head2 OPENCL 1.1 VS. OPENCL 1.2
410
411This module supports both OpenCL version 1.1 and 1.2, although the OpenCL
4121.2 interface hasn't been tested much for lack of availability of an
413actual implementation.
414
415Every function or method in this manual page that interfaces to a
416particular OpenCL function has a link to the its C manual page.
417
418If the link contains a F<1.1>, then this function is an OpenCL 1.1
419function. Most but not all also exist in OpenCL 1.2, and this module
420tries to emulate the missing ones for you, when told to do so at
421compiletime. You can check whether a function was removed in OpenCL 1.2 by
422replacing the F<1.1> component in the URL by F<1.2>.
423
424If the link contains a F<1.2>, then this is a OpenCL 1.2-only
425function. Even if the module was compiled with OpenCL 1.2 header files
426and has an 1.2 OpenCL library, calling such a function on a platform that
427doesn't implement 1.2 causes undefined behaviour, usually a crash (But
428this is not guaranteed).
429
430You can find out whether this module was compiled to prefer 1.1
431functionality by ooking at C<OpenCL::PREFER_1_1> - if it is true, then
4321.1 functions generally are implemented using 1.1 OpenCL functions. If it
433is false, then 1.1 functions missing from 1.2 are emulated by calling 1.2
434fucntions.
435
436This is a somewhat sorry state of affairs, but the Khronos group choose to
437make every release of OpenCL source and binary incompatible with previous
438releases.
380 439
381=head2 PERL AND OPENCL TYPES 440=head2 PERL AND OPENCL TYPES
382 441
383This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack 442This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack
384format equivalents: 443format equivalents:
… …
416OpenCL can generate a number of (potentially) asynchronous events, for 475OpenCL can generate a number of (potentially) asynchronous events, for
417example, after compiling a program, to signal a context-related error or, 476example, after compiling a program, to signal a context-related error or,
418perhaps most important, to signal completion of queued jobs (by setting 477perhaps most important, to signal completion of queued jobs (by setting
419callbacks on OpenCL::Event objects). 478callbacks on OpenCL::Event objects).
420 479
480The OpenCL module converts all these callbacks into events - you can
481still register callbacks, but they are not executed when your OpenCL
482implementation calls the actual callback, but only later. Therefore, none
483of the limitations of OpenCL callbacks apply to the perl implementation:
484it is perfectly safe to make blocking operations from event callbacks, and
485enqueued operations don't need to be flushed.
486
421To facilitate this, this module maintains an event queue - each 487To facilitate this, this module maintains an event queue - each
422time an asynchronous event happens, it is queued, and perl will be 488time an asynchronous event happens, it is queued, and perl will be
423interrupted. This is implemented via the L<Async::Interrupt> module. In 489interrupted. This is implemented via the L<Async::Interrupt> module. In
424addition, this module has L<AnyEvent> support, so it can seamlessly 490addition, this module has L<AnyEvent> support, so it can seamlessly
425integrate itself into many event loops. 491integrate itself into many event loops.
426 492
427Since this module is a bit hard to understand, here are some case examples: 493Since L<Async::Interrupt> is a bit hard to understand, here are some case examples:
428 494
429=head3 Don't use callbacks. 495=head3 Don't use callbacks.
430 496
431When your program never uses any callbacks, then there will never be any 497When your program never uses any callbacks, then there will never be any
432notifications you need to take care of, and therefore no need to worry 498notifications you need to take care of, and therefore no need to worry
… …
529use Async::Interrupt (); 595use Async::Interrupt ();
530 596
531our $POLL_FUNC; # set by XS 597our $POLL_FUNC; # set by XS
532 598
533BEGIN { 599BEGIN {
534 our $VERSION = '0.98'; 600 our $VERSION = '0.99';
535 601
536 require XSLoader; 602 require XSLoader;
537 XSLoader::load (__PACKAGE__, $VERSION); 603 XSLoader::load (__PACKAGE__, $VERSION);
538 604
539 @OpenCL::Platform::ISA = 605 @OpenCL::Platform::ISA =
… …
544 @OpenCL::Sampler::ISA = 610 @OpenCL::Sampler::ISA =
545 @OpenCL::Program::ISA = 611 @OpenCL::Program::ISA =
546 @OpenCL::Kernel::ISA = 612 @OpenCL::Kernel::ISA =
547 @OpenCL::Event::ISA = OpenCL::Object::; 613 @OpenCL::Event::ISA = OpenCL::Object::;
548 614
615 @OpenCL::SubDevice::ISA = OpenCL::Device::;
616
549 @OpenCL::Buffer::ISA = 617 @OpenCL::Buffer::ISA =
550 @OpenCL::Image::ISA = OpenCL::Memory::; 618 @OpenCL::Image::ISA = OpenCL::Memory::;
551 619
552 @OpenCL::BufferObj::ISA = OpenCL::Buffer::; 620 @OpenCL::BufferObj::ISA = OpenCL::Buffer::;
553 621
… …
557 @OpenCL::Image1D::ISA = 625 @OpenCL::Image1D::ISA =
558 @OpenCL::Image1DArray::ISA = 626 @OpenCL::Image1DArray::ISA =
559 @OpenCL::Image1DBuffer::ISA = OpenCL::Image::; 627 @OpenCL::Image1DBuffer::ISA = OpenCL::Image::;
560 628
561 @OpenCL::UserEvent::ISA = OpenCL::Event::; 629 @OpenCL::UserEvent::ISA = OpenCL::Event::;
630
631 @OpenCL::MappedBuffer::ISA =
632 @OpenCL::MappedImage::ISA = OpenCL::Mapped::;
562} 633}
563 634
564=head2 THE OpenCL PACKAGE 635=head2 THE OpenCL PACKAGE
565 636
566=over 4 637=over 4
… …
570The last error returned by a function - it's only valid after an error occured 641The last error returned by a function - it's only valid after an error occured
571and before calling another OpenCL function. 642and before calling another OpenCL function.
572 643
573=item $str = OpenCL::err2str [$errval] 644=item $str = OpenCL::err2str [$errval]
574 645
575Converts an error value into a human readable string. IF no error value is 646Converts an error value into a human readable string. If no error value is
576given, then the last error will be used (as returned by OpenCL::errno). 647given, then the last error will be used (as returned by OpenCL::errno).
648
649The latest version of this module knows the error constants
650listed in L<http://cvs.schmorp.de/OpenCL/errstr.h>.
577 651
578=item $str = OpenCL::enum2str $enum 652=item $str = OpenCL::enum2str $enum
579 653
580Converts most enum values (of parameter names, image format constants, 654Converts most enum values (of parameter names, image format constants,
581object types, addressing and filter modes, command types etc.) into a 655object types, addressing and filter modes, command types etc.) into a
582human readable string. When confronted with some random integer it can be 656human readable string. When confronted with some random integer it can be
583very helpful to pass it through this function to maybe get some readable 657very helpful to pass it through this function to maybe get some readable
584string out of it. 658string out of it.
585 659
660The latest version of this module knows the enumaration constants
661listed in L<http://cvs.schmorp.de/OpenCL/enumstr.h>.
662
586=item @platforms = OpenCL::platforms 663=item @platforms = OpenCL::platforms
587 664
588Returns all available OpenCL::Platform objects. 665Returns all available OpenCL::Platform objects.
589 666
590L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html> 667L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html>
591 668
592=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr 669=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr
593 670
594Tries to create a context from a default device and platform type - never worked for me. 671Tries to create a context from a default device and platform type - never worked for me.
672Consider using C<< $platform->context_from_type >> instead.
673
674type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU, OpenCL::DEVICE_TYPE_GPU,
675OpenCL::DEVICE_TYPE_ACCELERATOR, OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
595 676
596L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> 677L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
597 678
598=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr) 679=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr)
599 680
600Create a new OpenCL::Context object using the given device object(s). This 681Create a new OpenCL::Context object using the given device object(s).
601function isn't implemented yet, use C<< $platform->context >> instead. 682Consider using C<< $platform->context >> instead.
602 683
603L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> 684L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
604 685
605=item OpenCL::wait_for_events $wait_events... 686=item OpenCL::wait_for_events $wait_events...
606 687
… …
687L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> 768L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html>
688 769
689=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr) 770=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr)
690 771
691Create a new OpenCL::Context object using the given device object(s)- a 772Create a new OpenCL::Context object using the given device object(s)- a
692CL_CONTEXT_PLATFORM property is supplied automatically. 773OpenCL::CONTEXT_PLATFORM property is supplied automatically.
693 774
694L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> 775L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html>
695 776
696=item $packed_value = $platform->info ($name) 777=item $packed_value = $platform->info ($name)
697 778
… …
713 794
714=for gengetinfo begin platform 795=for gengetinfo begin platform
715 796
716=item $string = $platform->profile 797=item $string = $platform->profile
717 798
718Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result. 799Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_PROFILE> and returns the result.
719 800
720=item $string = $platform->version 801=item $string = $platform->version
721 802
722Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result. 803Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VERSION> and returns the result.
723 804
724=item $string = $platform->name 805=item $string = $platform->name
725 806
726Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result. 807Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_NAME> and returns the result.
727 808
728=item $string = $platform->vendor 809=item $string = $platform->vendor
729 810
730Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result. 811Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VENDOR> and returns the result.
731 812
732=item $string = $platform->extensions 813=item $string = $platform->extensions
733 814
734Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result. 815Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_EXTENSIONS> and returns the result.
735 816
736=for gengetinfo end platform 817=for gengetinfo end platform
737 818
738=back 819=back
739 820
… …
743 824
744=item $packed_value = $device->info ($name) 825=item $packed_value = $device->info ($name)
745 826
746See C<< $platform->info >> for details. 827See C<< $platform->info >> for details.
747 828
829type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU,
830OpenCL::DEVICE_TYPE_GPU, OpenCL::DEVICE_TYPE_ACCELERATOR,
831OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL.
832
833fp_config: OpenCL::FP_DENORM, OpenCL::FP_INF_NAN, OpenCL::FP_ROUND_TO_NEAREST,
834OpenCL::FP_ROUND_TO_ZERO, OpenCL::FP_ROUND_TO_INF, OpenCL::FP_FMA,
835OpenCL::FP_SOFT_FLOAT, OpenCL::FP_CORRECTLY_ROUNDED_DIVIDE_SQRT.
836
837mem_cache_type: OpenCL::NONE, OpenCL::READ_ONLY_CACHE, OpenCL::READ_WRITE_CACHE.
838
839local_mem_type: OpenCL::LOCAL, OpenCL::GLOBAL.
840
841exec_capabilities: OpenCL::EXEC_KERNEL, OpenCL::EXEC_NATIVE_KERNEL.
842
843command_queue_properties: OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE,
844OpenCL::QUEUE_PROFILING_ENABLE.
845
846partition_properties: OpenCL::DEVICE_PARTITION_EQUALLY,
847OpenCL::DEVICE_PARTITION_BY_COUNTS, OpenCL::DEVICE_PARTITION_BY_COUNTS_LIST_END,
848OpenCL::DEVICE_PARTITION_BY_AFFINITY_DOMAIN.
849
850affinity_domain: OpenCL::DEVICE_AFFINITY_DOMAIN_NUMA,
851OpenCL::DEVICE_AFFINITY_DOMAIN_L4_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L3_CACHE,
852OpenCL::DEVICE_AFFINITY_DOMAIN_L2_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L1_CACHE,
853OpenCL::DEVICE_AFFINITY_DOMAIN_NEXT_PARTITIONABLE.
854
748L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html> 855L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html>
749 856
857=item @devices = $device->sub_devices (\@properties)
858
859Creates OpencL::SubDevice objects by partitioning an existing device.
860
861L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateSubDevices.html>
862
750=for gengetinfo begin device 863=for gengetinfo begin device
751 864
752=item $device_type = $device->type 865=item $device_type = $device->type
753 866
754Calls C<clGetDeviceInfo> with C<CL_DEVICE_TYPE> and returns the result. 867Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_TYPE> and returns the result.
755 868
756=item $uint = $device->vendor_id 869=item $uint = $device->vendor_id
757 870
758Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR_ID> and returns the result. 871Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR_ID> and returns the result.
759 872
760=item $uint = $device->max_compute_units 873=item $uint = $device->max_compute_units
761 874
762Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_COMPUTE_UNITS> and returns the result. 875Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_COMPUTE_UNITS> and returns the result.
763 876
764=item $uint = $device->max_work_item_dimensions 877=item $uint = $device->max_work_item_dimensions
765 878
766Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result. 879Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result.
767 880
768=item $int = $device->max_work_group_size 881=item $int = $device->max_work_group_size
769 882
770Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_GROUP_SIZE> and returns the result. 883Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_GROUP_SIZE> and returns the result.
771 884
772=item @ints = $device->max_work_item_sizes 885=item @ints = $device->max_work_item_sizes
773 886
774Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_SIZES> and returns the result. 887Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_SIZES> and returns the result.
775 888
776=item $uint = $device->preferred_vector_width_char 889=item $uint = $device->preferred_vector_width_char
777 890
778Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result. 891Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result.
779 892
780=item $uint = $device->preferred_vector_width_short 893=item $uint = $device->preferred_vector_width_short
781 894
782Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result. 895Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result.
783 896
784=item $uint = $device->preferred_vector_width_int 897=item $uint = $device->preferred_vector_width_int
785 898
786Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result. 899Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result.
787 900
788=item $uint = $device->preferred_vector_width_long 901=item $uint = $device->preferred_vector_width_long
789 902
790Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result. 903Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result.
791 904
792=item $uint = $device->preferred_vector_width_float 905=item $uint = $device->preferred_vector_width_float
793 906
794Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result. 907Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result.
795 908
796=item $uint = $device->preferred_vector_width_double 909=item $uint = $device->preferred_vector_width_double
797 910
798Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result. 911Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result.
799 912
800=item $uint = $device->max_clock_frequency 913=item $uint = $device->max_clock_frequency
801 914
802Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CLOCK_FREQUENCY> and returns the result. 915Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CLOCK_FREQUENCY> and returns the result.
803 916
804=item $bitfield = $device->address_bits 917=item $bitfield = $device->address_bits
805 918
806Calls C<clGetDeviceInfo> with C<CL_DEVICE_ADDRESS_BITS> and returns the result. 919Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ADDRESS_BITS> and returns the result.
807 920
808=item $uint = $device->max_read_image_args 921=item $uint = $device->max_read_image_args
809 922
810Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_READ_IMAGE_ARGS> and returns the result. 923Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_READ_IMAGE_ARGS> and returns the result.
811 924
812=item $uint = $device->max_write_image_args 925=item $uint = $device->max_write_image_args
813 926
814Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result. 927Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result.
815 928
816=item $ulong = $device->max_mem_alloc_size 929=item $ulong = $device->max_mem_alloc_size
817 930
818Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result. 931Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result.
819 932
820=item $int = $device->image2d_max_width 933=item $int = $device->image2d_max_width
821 934
822Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_WIDTH> and returns the result. 935Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_WIDTH> and returns the result.
823 936
824=item $int = $device->image2d_max_height 937=item $int = $device->image2d_max_height
825 938
826Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result. 939Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result.
827 940
828=item $int = $device->image3d_max_width 941=item $int = $device->image3d_max_width
829 942
830Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_WIDTH> and returns the result. 943Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_WIDTH> and returns the result.
831 944
832=item $int = $device->image3d_max_height 945=item $int = $device->image3d_max_height
833 946
834Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result. 947Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result.
835 948
836=item $int = $device->image3d_max_depth 949=item $int = $device->image3d_max_depth
837 950
838Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_DEPTH> and returns the result. 951Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_DEPTH> and returns the result.
839 952
840=item $uint = $device->image_support 953=item $uint = $device->image_support
841 954
842Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE_SUPPORT> and returns the result. 955Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE_SUPPORT> and returns the result.
843 956
844=item $int = $device->max_parameter_size 957=item $int = $device->max_parameter_size
845 958
846Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_PARAMETER_SIZE> and returns the result. 959Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_PARAMETER_SIZE> and returns the result.
847 960
848=item $uint = $device->max_samplers 961=item $uint = $device->max_samplers
849 962
850Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_SAMPLERS> and returns the result. 963Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_SAMPLERS> and returns the result.
851 964
852=item $uint = $device->mem_base_addr_align 965=item $uint = $device->mem_base_addr_align
853 966
854Calls C<clGetDeviceInfo> with C<CL_DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result. 967Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result.
855 968
856=item $uint = $device->min_data_type_align_size 969=item $uint = $device->min_data_type_align_size
857 970
858Calls C<clGetDeviceInfo> with C<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result. 971Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result.
859 972
860=item $device_fp_config = $device->single_fp_config 973=item $device_fp_config = $device->single_fp_config
861 974
862Calls C<clGetDeviceInfo> with C<CL_DEVICE_SINGLE_FP_CONFIG> and returns the result. 975Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_SINGLE_FP_CONFIG> and returns the result.
863 976
864=item $device_mem_cache_type = $device->global_mem_cache_type 977=item $device_mem_cache_type = $device->global_mem_cache_type
865 978
866Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result. 979Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result.
867 980
868=item $uint = $device->global_mem_cacheline_size 981=item $uint = $device->global_mem_cacheline_size
869 982
870Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result. 983Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result.
871 984
872=item $ulong = $device->global_mem_cache_size 985=item $ulong = $device->global_mem_cache_size
873 986
874Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result. 987Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result.
875 988
876=item $ulong = $device->global_mem_size 989=item $ulong = $device->global_mem_size
877 990
878Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_SIZE> and returns the result. 991Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_SIZE> and returns the result.
879 992
880=item $ulong = $device->max_constant_buffer_size 993=item $ulong = $device->max_constant_buffer_size
881 994
882Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result. 995Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result.
883 996
884=item $uint = $device->max_constant_args 997=item $uint = $device->max_constant_args
885 998
886Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_ARGS> and returns the result. 999Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_ARGS> and returns the result.
887 1000
888=item $device_local_mem_type = $device->local_mem_type 1001=item $device_local_mem_type = $device->local_mem_type
889 1002
890Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_TYPE> and returns the result. 1003Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_TYPE> and returns the result.
891 1004
892=item $ulong = $device->local_mem_size 1005=item $ulong = $device->local_mem_size
893 1006
894Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_SIZE> and returns the result. 1007Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_SIZE> and returns the result.
895 1008
896=item $boolean = $device->error_correction_support 1009=item $boolean = $device->error_correction_support
897 1010
898Calls C<clGetDeviceInfo> with C<CL_DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result. 1011Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result.
899 1012
900=item $int = $device->profiling_timer_resolution 1013=item $int = $device->profiling_timer_resolution
901 1014
902Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result. 1015Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result.
903 1016
904=item $boolean = $device->endian_little 1017=item $boolean = $device->endian_little
905 1018
906Calls C<clGetDeviceInfo> with C<CL_DEVICE_ENDIAN_LITTLE> and returns the result. 1019Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ENDIAN_LITTLE> and returns the result.
907 1020
908=item $boolean = $device->available 1021=item $boolean = $device->available
909 1022
910Calls C<clGetDeviceInfo> with C<CL_DEVICE_AVAILABLE> and returns the result. 1023Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AVAILABLE> and returns the result.
911 1024
912=item $boolean = $device->compiler_available 1025=item $boolean = $device->compiler_available
913 1026
914Calls C<clGetDeviceInfo> with C<CL_DEVICE_COMPILER_AVAILABLE> and returns the result. 1027Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_COMPILER_AVAILABLE> and returns the result.
915 1028
916=item $device_exec_capabilities = $device->execution_capabilities 1029=item $device_exec_capabilities = $device->execution_capabilities
917 1030
918Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXECUTION_CAPABILITIES> and returns the result. 1031Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXECUTION_CAPABILITIES> and returns the result.
919 1032
920=item $command_queue_properties = $device->properties 1033=item $command_queue_properties = $device->properties
921 1034
922Calls C<clGetDeviceInfo> with C<CL_DEVICE_QUEUE_PROPERTIES> and returns the result. 1035Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_QUEUE_PROPERTIES> and returns the result.
923 1036
924=item $ = $device->platform 1037=item $ = $device->platform
925 1038
926Calls C<clGetDeviceInfo> with C<CL_DEVICE_PLATFORM> and returns the result. 1039Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PLATFORM> and returns the result.
927 1040
928=item $string = $device->name 1041=item $string = $device->name
929 1042
930Calls C<clGetDeviceInfo> with C<CL_DEVICE_NAME> and returns the result. 1043Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NAME> and returns the result.
931 1044
932=item $string = $device->vendor 1045=item $string = $device->vendor
933 1046
934Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR> and returns the result. 1047Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR> and returns the result.
935 1048
936=item $string = $device->driver_version 1049=item $string = $device->driver_version
937 1050
938Calls C<clGetDeviceInfo> with C<CL_DRIVER_VERSION> and returns the result. 1051Calls C<clGetDeviceInfo> with C<OpenCL::DRIVER_VERSION> and returns the result.
939 1052
940=item $string = $device->profile 1053=item $string = $device->profile
941 1054
942Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILE> and returns the result. 1055Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILE> and returns the result.
943 1056
944=item $string = $device->version 1057=item $string = $device->version
945 1058
946Calls C<clGetDeviceInfo> with C<CL_DEVICE_VERSION> and returns the result. 1059Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VERSION> and returns the result.
947 1060
948=item $string = $device->extensions 1061=item $string = $device->extensions
949 1062
950Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXTENSIONS> and returns the result. 1063Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXTENSIONS> and returns the result.
951 1064
952=item $uint = $device->preferred_vector_width_half 1065=item $uint = $device->preferred_vector_width_half
953 1066
954Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result. 1067Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result.
955 1068
956=item $uint = $device->native_vector_width_char 1069=item $uint = $device->native_vector_width_char
957 1070
958Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result. 1071Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result.
959 1072
960=item $uint = $device->native_vector_width_short 1073=item $uint = $device->native_vector_width_short
961 1074
962Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result. 1075Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result.
963 1076
964=item $uint = $device->native_vector_width_int 1077=item $uint = $device->native_vector_width_int
965 1078
966Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result. 1079Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result.
967 1080
968=item $uint = $device->native_vector_width_long 1081=item $uint = $device->native_vector_width_long
969 1082
970Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result. 1083Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result.
971 1084
972=item $uint = $device->native_vector_width_float 1085=item $uint = $device->native_vector_width_float
973 1086
974Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result. 1087Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result.
975 1088
976=item $uint = $device->native_vector_width_double 1089=item $uint = $device->native_vector_width_double
977 1090
978Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result. 1091Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result.
979 1092
980=item $uint = $device->native_vector_width_half 1093=item $uint = $device->native_vector_width_half
981 1094
982Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result. 1095Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result.
983 1096
984=item $device_fp_config = $device->double_fp_config 1097=item $device_fp_config = $device->double_fp_config
985 1098
986Calls C<clGetDeviceInfo> with C<CL_DEVICE_DOUBLE_FP_CONFIG> and returns the result. 1099Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_DOUBLE_FP_CONFIG> and returns the result.
987 1100
988=item $device_fp_config = $device->half_fp_config 1101=item $device_fp_config = $device->half_fp_config
989 1102
990Calls C<clGetDeviceInfo> with C<CL_DEVICE_HALF_FP_CONFIG> and returns the result. 1103Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HALF_FP_CONFIG> and returns the result.
991 1104
992=item $boolean = $device->host_unified_memory 1105=item $boolean = $device->host_unified_memory
993 1106
994Calls C<clGetDeviceInfo> with C<CL_DEVICE_HOST_UNIFIED_MEMORY> and returns the result. 1107Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HOST_UNIFIED_MEMORY> and returns the result.
995 1108
996=item $device = $device->parent_device_ext 1109=item $device = $device->parent_device_ext
997 1110
998Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARENT_DEVICE_EXT> and returns the result. 1111Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARENT_DEVICE_EXT> and returns the result.
999 1112
1000=item @device_partition_property_exts = $device->partition_types_ext 1113=item @device_partition_property_exts = $device->partition_types_ext
1001 1114
1002Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_TYPES_EXT> and returns the result. 1115Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_TYPES_EXT> and returns the result.
1003 1116
1004=item @device_partition_property_exts = $device->affinity_domains_ext 1117=item @device_partition_property_exts = $device->affinity_domains_ext
1005 1118
1006Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result. 1119Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AFFINITY_DOMAINS_EXT> and returns the result.
1007 1120
1008=item $uint = $device->reference_count_ext 1121=item $uint = $device->reference_count_ext
1009 1122
1010Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT> and returns the result. 1123Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_REFERENCE_COUNT_EXT> and returns the result.
1011 1124
1012=item @device_partition_property_exts = $device->partition_style_ext 1125=item @device_partition_property_exts = $device->partition_style_ext
1013 1126
1014Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result. 1127Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_STYLE_EXT> and returns the result.
1015 1128
1016=for gengetinfo end device 1129=for gengetinfo end device
1017 1130
1018=back 1131=back
1019 1132
1020=head2 THE OpenCL::Context CLASS 1133=head2 THE OpenCL::Context CLASS
1134
1135An OpenCL::Context is basically a container, or manager, for a number of
1136devices of a platform. It is used to create all sorts of secondary objects
1137such as buffers, queues, programs and so on.
1138
1139All context creation functions and methods take a list of properties
1140(type-value pairs). All property values can be specified as integers -
1141some additionally support other types:
1142
1143=over 4
1144
1145=item OpenCL::CONTEXT_PLATFORM
1146
1147Also accepts OpenCL::Platform objects.
1148
1149=item OpenCL::GLX_DISPLAY_KHR
1150
1151Also accepts C<undef>, in which case a deep and troubling hack is engaged
1152to find the current glx display (see L<GLX SUPPORT>).
1153
1154=item OpenCL::GL_CONTEXT_KHR
1155
1156Also accepts C<undef>, in which case a deep and troubling hack is engaged
1157to find the current glx context (see L<GLX SUPPORT>).
1158
1159=back
1021 1160
1022=over 4 1161=over 4
1023 1162
1024=item $prog = $ctx->build_program ($program, $options = "") 1163=item $prog = $ctx->build_program ($program, $options = "")
1025 1164
… …
1073=item $buf = $ctx->buffer ($flags, $len) 1212=item $buf = $ctx->buffer ($flags, $len)
1074 1213
1075Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the 1214Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the
1076given flags and octet-size. 1215given flags and octet-size.
1077 1216
1217flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_WRITE_ONLY, OpenCL::MEM_READ_ONLY,
1218OpenCL::MEM_USE_HOST_PTR, OpenCL::MEM_ALLOC_HOST_PTR, OpenCL::MEM_COPY_HOST_PTR,
1219OpenCL::MEM_HOST_WRITE_ONLY, OpenCL::MEM_HOST_READ_ONLY, OpenCL::MEM_HOST_NO_ACCESS.
1220
1078L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html> 1221L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html>
1079 1222
1080=item $buf = $ctx->buffer_sv ($flags, $data) 1223=item $buf = $ctx->buffer_sv ($flags, $data)
1081 1224
1082Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and 1225Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and
… …
1085=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) 1228=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)
1086 1229
1087Creates a new OpenCL::Image object and optionally initialises it with 1230Creates a new OpenCL::Image object and optionally initialises it with
1088the given data values. 1231the given data values.
1089 1232
1233channel_order: OpenCL::R, OpenCL::A, OpenCL::RG, OpenCL::RA, OpenCL::RGB,
1234OpenCL::RGBA, OpenCL::BGRA, OpenCL::ARGB, OpenCL::INTENSITY, OpenCL::LUMINANCE,
1235OpenCL::Rx, OpenCL::RGx, OpenCL::RGBx.
1236
1237channel_type: OpenCL::SNORM_INT8, OpenCL::SNORM_INT16, OpenCL::UNORM_INT8,
1238OpenCL::UNORM_INT16, OpenCL::UNORM_SHORT_565, OpenCL::UNORM_SHORT_555,
1239OpenCL::UNORM_INT_101010, OpenCL::SIGNED_INT8, OpenCL::SIGNED_INT16,
1240OpenCL::SIGNED_INT32, OpenCL::UNSIGNED_INT8, OpenCL::UNSIGNED_INT16,
1241OpenCL::UNSIGNED_INT32, OpenCL::HALF_FLOAT, OpenCL::FLOAT.
1242
1243type: OpenCL::MEM_OBJECT_BUFFER, OpenCL::MEM_OBJECT_IMAGE2D,
1244OpenCL::MEM_OBJECT_IMAGE3D, OpenCL::MEM_OBJECT_IMAGE2D_ARRAY,
1245OpenCL::MEM_OBJECT_IMAGE1D, OpenCL::MEM_OBJECT_IMAGE1D_ARRAY,
1246OpenCL::MEM_OBJECT_IMAGE1D_BUFFER.
1247
1090L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html> 1248L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html>
1091 1249
1092=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef) 1250=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef)
1093 1251
1094Creates a new OpenCL::Image2D object and optionally initialises it with 1252Creates a new OpenCL::Image2D object and optionally initialises it with
… …
1106=item $buffer = $ctx->gl_buffer ($flags, $bufobj) 1264=item $buffer = $ctx->gl_buffer ($flags, $bufobj)
1107 1265
1108Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given 1266Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given
1109OpenGL buffer object. 1267OpenGL buffer object.
1110 1268
1269flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_READ_ONLY, OpenCL::MEM_WRITE_ONLY.
1270
1111http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html 1271http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html
1112 1272
1113=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture) 1273=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture)
1114 1274
1115Creates a new OpenCL::Image object that refers to the given OpenGL 1275Creates a new OpenCL::Image object that refers to the given OpenGL
1116texture object or buffer. 1276texture object or buffer.
1117 1277
1278target: GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_BUFFER,
1279GL_TEXTURE_2D, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_3D,
1280GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
1281GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
1282GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
1283GL_TEXTURE_RECTANGLE/GL_TEXTURE_RECTANGLE_ARB.
1284
1118http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html 1285http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html
1119 1286
1120=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture) 1287=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture)
1121 1288
1122Creates a new OpenCL::Image2D object that refers to the given OpenGL 1289Creates a new OpenCL::Image2D object that refers to the given OpenGL
… …
1147 1314
1148=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode) 1315=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode)
1149 1316
1150Creates a new OpenCL::Sampler object. 1317Creates a new OpenCL::Sampler object.
1151 1318
1319addressing_mode: OpenCL::ADDRESS_NONE, OpenCL::ADDRESS_CLAMP_TO_EDGE,
1320OpenCL::ADDRESS_CLAMP, OpenCL::ADDRESS_REPEAT, OpenCL::ADDRESS_MIRRORED_REPEAT.
1321
1322filter_mode: OpenCL::FILTER_NEAREST, OpenCL::FILTER_LINEAR.
1323
1152L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html> 1324L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html>
1153 1325
1154=item $program = $ctx->program_with_source ($string) 1326=item $program = $ctx->program_with_source ($string)
1155 1327
1156Creates a new OpenCL::Program object from the given source code. 1328Creates a new OpenCL::Program object from the given source code.
1157 1329
1158L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html> 1330L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html>
1159 1331
1332=item ($program, \@status) = $ctx->program_with_binary (\@devices, \@binaries)
1333
1334Creates a new OpenCL::Program object from the given binaries.
1335
1336L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithBinary.html>
1337
1338Example: clone an existing program object that contains a successfully
1339compiled program, no matter how useless this is.
1340
1341 my $clone = $ctx->program_with_binary ([$prog->devices], [$prog->binaries]);
1342
1343=item $program = $ctx->program_with_built_in_kernels (\@devices, $kernel_names)
1344
1345Creates a new OpenCL::Program object from the given built-in kernel names.
1346
1347L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateProgramWithBuiltInKernels.html>
1348
1349=item $program = $ctx->link_program (\@devices, $options, \@programs, $cb->($program) = undef)
1350
1351Links all (already compiled) program objects specified in C<@programs>
1352together and returns a new OpenCL::Program object with the result.
1353
1354L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clLinkProgram.html>
1355
1160=item $packed_value = $ctx->info ($name) 1356=item $packed_value = $ctx->info ($name)
1161 1357
1162See C<< $platform->info >> for details. 1358See C<< $platform->info >> for details.
1163 1359
1164L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html> 1360L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html>
1165 1361
1166=for gengetinfo begin context 1362=for gengetinfo begin context
1167 1363
1168=item $uint = $context->reference_count 1364=item $uint = $context->reference_count
1169 1365
1170Calls C<clGetContextInfo> with C<CL_CONTEXT_REFERENCE_COUNT> and returns the result. 1366Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_REFERENCE_COUNT> and returns the result.
1171 1367
1172=item @devices = $context->devices 1368=item @devices = $context->devices
1173 1369
1174Calls C<clGetContextInfo> with C<CL_CONTEXT_DEVICES> and returns the result. 1370Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_DEVICES> and returns the result.
1175 1371
1176=item @property_ints = $context->properties 1372=item @property_ints = $context->properties
1177 1373
1178Calls C<clGetContextInfo> with C<CL_CONTEXT_PROPERTIES> and returns the result. 1374Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_PROPERTIES> and returns the result.
1179 1375
1180=item $uint = $context->num_devices 1376=item $uint = $context->num_devices
1181 1377
1182Calls C<clGetContextInfo> with C<CL_CONTEXT_NUM_DEVICES> and returns the result. 1378Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_NUM_DEVICES> and returns the result.
1183 1379
1184=for gengetinfo end context 1380=for gengetinfo end context
1185 1381
1186=back 1382=back
1187 1383
… …
1303reference to an array of local work sizes, with the same number of 1499reference to an array of local work sizes, with the same number of
1304elements as \@global_work_size. 1500elements as \@global_work_size.
1305 1501
1306L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html> 1502L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html>
1307 1503
1504=item $ev = $queue->migrate_mem_objects (\@mem_objects, $flags, $wait_events...)
1505
1506Migrates a number of OpenCL::Memory objects to or from the device.
1507
1508flags: OpenCL::MIGRATE_MEM_OBJECT_HOST, OpenCL::MIGRATE_MEM_OBJECT_CONTENT_UNDEFINED
1509
1510L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMigrateMemObjects.html>
1511
1308=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...) 1512=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...)
1309 1513
1310Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired 1514Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired
1311for subsequent OpenCL usage. 1515for subsequent OpenCL usage.
1312 1516
… …
1347 1551
1348=for gengetinfo begin command_queue 1552=for gengetinfo begin command_queue
1349 1553
1350=item $ctx = $command_queue->context 1554=item $ctx = $command_queue->context
1351 1555
1352Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_CONTEXT> and returns the result. 1556Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_CONTEXT> and returns the result.
1353 1557
1354=item $device = $command_queue->device 1558=item $device = $command_queue->device
1355 1559
1356Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_DEVICE> and returns the result. 1560Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_DEVICE> and returns the result.
1357 1561
1358=item $uint = $command_queue->reference_count 1562=item $uint = $command_queue->reference_count
1359 1563
1360Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_REFERENCE_COUNT> and returns the result. 1564Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_REFERENCE_COUNT> and returns the result.
1361 1565
1362=item $command_queue_properties = $command_queue->properties 1566=item $command_queue_properties = $command_queue->properties
1363 1567
1364Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_PROPERTIES> and returns the result. 1568Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_PROPERTIES> and returns the result.
1365 1569
1366=for gengetinfo end command_queue 1570=for gengetinfo end command_queue
1571
1572=back
1573
1574=head3 MEMORY MAPPED BUFFERS
1575
1576OpenCL allows you to map buffers and images to host memory (read: perl
1577scalars). This is done much like reading or copying a buffer, by enqueuing
1578a map or unmap operation on the command queue.
1579
1580The map operations return an C<OpenCL::Mapped> object - see L<THE
1581OpenCL::Mapped CLASS> section for details on what to do with these
1582objects.
1583
1584The object will be unmapped automatically when the mapped object is
1585destroyed (you can use a barrier to make sure the unmap has finished,
1586before using the buffer in a kernel), but you can also enqueue an unmap
1587operation manually.
1588
1589=over 4
1590
1591=item $mapped_buffer = $queue->map_buffer ($buf, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $offset=0, $size=undef, $wait_events...)
1592
1593Maps the given buffer into host memory and returns an
1594C<OpenCL::MappedBuffer> object. If C<$size> is specified as undef, then
1595the map will extend to the end of the buffer.
1596
1597map_flags: OpenCL::MAP_READ, OpenCL::MAP_WRITE, OpenCL::MAP_WRITE_INVALIDATE_REGION.
1598
1599L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapBuffer.html>
1600
1601Example: map the buffer $buf fully and replace the first 4 bytes by "abcd", then unmap.
1602
1603 {
1604 my $mapped = $queue->map_buffer ($buf, 1, OpenCL::MAP_WRITE);
1605 substr $$mapped, 0, 4, "abcd";
1606 } # asynchronously unmap because $mapped is destroyed
1607
1608=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...)
1609
1610Maps the given image area into host memory and return an
1611C<OpenCL::MappedImage> object.
1612
1613If any of C<$width>, C<$height> and/or C<$depth> are C<undef> then they
1614will be replaced by the maximum possible value.
1615
1616L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapImage.html>
1617
1618Example: map an image (with OpenCL::UNSIGNED_INT8 channel type) and set
1619the first channel of the leftmost column to 5, then explicitly unmap
1620it. You are not necessarily meant to do it this way, this example just
1621shows you the accessors to use :)
1622
1623 my $mapped = $queue->map_image ($image, 1, OpenCL::MAP_WRITE);
1624
1625 $mapped->set ($_ * $mapped->row_pitch, pack "C", 5)
1626 for 0..$image->height;
1627
1628 $mapped->unmap;.
1629 $mapped->wait; # only needed for out of order queues normally
1630
1631=item $ev = $queue->unmap ($mapped, $wait_events...)
1632
1633Unmaps the data from host memory. You must not call any methods that
1634modify the data, or modify the data scalar directly, after calling this
1635method.
1636
1637The mapped event object will always be passed as part of the
1638$wait_events. The mapped event object will be replaced by the new event
1639object that this request creates.
1367 1640
1368=back 1641=back
1369 1642
1370=head2 THE OpenCL::Memory CLASS 1643=head2 THE OpenCL::Memory CLASS
1371 1644
… …
1382 1655
1383=for gengetinfo begin mem 1656=for gengetinfo begin mem
1384 1657
1385=item $mem_object_type = $mem->type 1658=item $mem_object_type = $mem->type
1386 1659
1387Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result. 1660Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_TYPE> and returns the result.
1388 1661
1389=item $mem_flags = $mem->flags 1662=item $mem_flags = $mem->flags
1390 1663
1391Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result. 1664Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_FLAGS> and returns the result.
1392 1665
1393=item $int = $mem->size 1666=item $int = $mem->size
1394 1667
1395Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result. 1668Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_SIZE> and returns the result.
1396 1669
1397=item $ptr_value = $mem->host_ptr 1670=item $ptr_value = $mem->host_ptr
1398 1671
1399Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result. 1672Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_HOST_PTR> and returns the result.
1400 1673
1401=item $uint = $mem->map_count 1674=item $uint = $mem->map_count
1402 1675
1403Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result. 1676Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_MAP_COUNT> and returns the result.
1404 1677
1405=item $uint = $mem->reference_count 1678=item $uint = $mem->reference_count
1406 1679
1407Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result. 1680Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_REFERENCE_COUNT> and returns the result.
1408 1681
1409=item $ctx = $mem->context 1682=item $ctx = $mem->context
1410 1683
1411Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result. 1684Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_CONTEXT> and returns the result.
1412 1685
1413=item $mem = $mem->associated_memobject 1686=item $mem = $mem->associated_memobject
1414 1687
1415Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result. 1688Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_ASSOCIATED_MEMOBJECT> and returns the result.
1416 1689
1417=item $int = $mem->offset 1690=item $int = $mem->offset
1418 1691
1419Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result. 1692Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_OFFSET> and returns the result.
1420 1693
1421=for gengetinfo end mem 1694=for gengetinfo end mem
1422 1695
1423=item ($type, $name) = $mem->gl_object_info 1696=item ($type, $name) = $mem->gl_object_info
1424 1697
… …
1444=over 4 1717=over 4
1445 1718
1446=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size) 1719=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size)
1447 1720
1448Creates an OpenCL::Buffer objects from this buffer and returns it. The 1721Creates an OpenCL::Buffer objects from this buffer and returns it. The
1449C<buffer_create_type> is assumed to be C<CL_BUFFER_CREATE_TYPE_REGION>. 1722C<buffer_create_type> is assumed to be C<OpenCL::BUFFER_CREATE_TYPE_REGION>.
1450 1723
1451L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html> 1724L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html>
1452 1725
1453=back 1726=back
1454 1727
… …
1470L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html> 1743L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html>
1471 1744
1472=item ($channel_order, $channel_data_type) = $image->format 1745=item ($channel_order, $channel_data_type) = $image->format
1473 1746
1474Returns the channel order and type used to create the image by calling 1747Returns the channel order and type used to create the image by calling
1475C<clGetImageInfo> with C<CL_IMAGE_FORMAT>. 1748C<clGetImageInfo> with C<OpenCL::IMAGE_FORMAT>.
1476 1749
1477=for gengetinfo begin image 1750=for gengetinfo begin image
1478 1751
1479=item $int = $image->element_size 1752=item $int = $image->element_size
1480 1753
1481Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result. 1754Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ELEMENT_SIZE> and returns the result.
1482 1755
1483=item $int = $image->row_pitch 1756=item $int = $image->row_pitch
1484 1757
1485Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result. 1758Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ROW_PITCH> and returns the result.
1486 1759
1487=item $int = $image->slice_pitch 1760=item $int = $image->slice_pitch
1488 1761
1489Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result. 1762Calls C<clGetImageInfo> with C<OpenCL::IMAGE_SLICE_PITCH> and returns the result.
1490 1763
1491=item $int = $image->width 1764=item $int = $image->width
1492 1765
1493Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result. 1766Calls C<clGetImageInfo> with C<OpenCL::IMAGE_WIDTH> and returns the result.
1494 1767
1495=item $int = $image->height 1768=item $int = $image->height
1496 1769
1497Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result. 1770Calls C<clGetImageInfo> with C<OpenCL::IMAGE_HEIGHT> and returns the result.
1498 1771
1499=item $int = $image->depth 1772=item $int = $image->depth
1500 1773
1501Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result. 1774Calls C<clGetImageInfo> with C<OpenCL::IMAGE_DEPTH> and returns the result.
1502 1775
1503=for gengetinfo end image 1776=for gengetinfo end image
1504 1777
1505=for gengetinfo begin gl_texture 1778=for gengetinfo begin gl_texture
1506 1779
1507=item $GLenum = $gl_texture->target 1780=item $GLenum = $gl_texture->target
1508 1781
1509Calls C<clGetGLTextureInfo> with C<CL_GL_TEXTURE_TARGET> and returns the result. 1782Calls C<clGetGLTextureInfo> with C<OpenCL::GL_TEXTURE_TARGET> and returns the result.
1510 1783
1511=item $GLint = $gl_texture->gl_mipmap_level 1784=item $GLint = $gl_texture->gl_mipmap_level
1512 1785
1513Calls C<clGetGLTextureInfo> with C<CL_GL_MIPMAP_LEVEL> and returns the result. 1786Calls C<clGetGLTextureInfo> with C<OpenCL::GL_MIPMAP_LEVEL> and returns the result.
1514 1787
1515=for gengetinfo end gl_texture 1788=for gengetinfo end gl_texture
1516 1789
1517=back 1790=back
1518 1791
… …
1528 1801
1529=for gengetinfo begin sampler 1802=for gengetinfo begin sampler
1530 1803
1531=item $uint = $sampler->reference_count 1804=item $uint = $sampler->reference_count
1532 1805
1533Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result. 1806Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_REFERENCE_COUNT> and returns the result.
1534 1807
1535=item $ctx = $sampler->context 1808=item $ctx = $sampler->context
1536 1809
1537Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result. 1810Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_CONTEXT> and returns the result.
1538 1811
1539=item $addressing_mode = $sampler->normalized_coords 1812=item $addressing_mode = $sampler->normalized_coords
1540 1813
1541Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result. 1814Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_NORMALIZED_COORDS> and returns the result.
1542 1815
1543=item $filter_mode = $sampler->addressing_mode 1816=item $filter_mode = $sampler->addressing_mode
1544 1817
1545Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result. 1818Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_ADDRESSING_MODE> and returns the result.
1546 1819
1547=item $boolean = $sampler->filter_mode 1820=item $boolean = $sampler->filter_mode
1548 1821
1549Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result. 1822Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_FILTER_MODE> and returns the result.
1550 1823
1551=for gengetinfo end sampler 1824=for gengetinfo end sampler
1552 1825
1553=back 1826=back
1554 1827
… …
1572not so. So best make sure you don't pass in invalid values. 1845not so. So best make sure you don't pass in invalid values.
1573 1846
1574Some implementations fail with C<OpenCL::INVALID_BINARY> when the 1847Some implementations fail with C<OpenCL::INVALID_BINARY> when the
1575compilation state is successful but some later stage fails. 1848compilation state is successful but some later stage fails.
1576 1849
1850options: C<-D name>, C<-D name=definition>, C<-I dir>,
1851C<-cl-single-precision-constant>, C<-cl-denorms-are-zero>,
1852C<-cl-fp32-correctly-rounded-divide-sqrt>, C<-cl-opt-disable>,
1853C<-cl-mad-enable>, C<-cl-no-signed-zeros>, C<-cl-unsafe-math-optimizations>,
1854C<-cl-finite-math-only>, C<-cl-fast-relaxed-math>,
1855C<-w>, C<-Werror>, C<-cl-std=CL1.1/CL1.2>, C<-cl-kernel-arg-info>,
1856C<-create-library>, C<-enable-link-options>.
1857
1858build_status: OpenCL::BUILD_SUCCESS, OpenCL::BUILD_NONE,
1859OpenCL::BUILD_ERROR, OpenCL::BUILD_IN_PROGRESS.
1860
1577L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html> 1861L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html>
1578 1862
1579=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef) 1863=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef)
1580 1864
1581Similar to C<< ->build >>, except it starts a thread, and never fails (you 1865Similar to C<< ->build >>, except it starts a thread, and never fails (you
1582need to check the compilation status form the callback, or by polling). 1866need to check the compilation status form the callback, or by polling).
1583 1867
1868=item $program->compile (\@devices = undef, $options = "", \%headers = undef, $cb->($program) = undef)
1869
1870Compiles the given program for the given devices (or all devices if
1871undef). If C<$headers> is given, it must be a hashref with include name =>
1872OpenCL::Program pairs.
1873
1874L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCompileProgram.html>
1875
1584=item $packed_value = $program->build_info ($device, $name) 1876=item $packed_value = $program->build_info ($device, $name)
1585 1877
1586Similar to C<< $platform->info >>, but returns build info for a previous 1878Similar to C<< $platform->info >>, but returns build info for a previous
1587build attempt for the given device. 1879build attempt for the given device.
1588 1880
1881binary_type: OpenCL::PROGRAM_BINARY_TYPE_NONE,
1882OpenCL::PROGRAM_BINARY_TYPE_COMPILED_OBJECT,
1883OpenCL::PROGRAM_BINARY_TYPE_LIBRARY,
1884OpenCL::PROGRAM_BINARY_TYPE_EXECUTABLE.
1885
1589L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html> 1886L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html>
1590 1887
1591=item $kernel = $program->kernel ($function_name) 1888=item $kernel = $program->kernel ($function_name)
1592 1889
1593Creates an OpenCL::Kernel object out of the named C<__kernel> function in 1890Creates an OpenCL::Kernel object out of the named C<__kernel> function in
… …
1603 1900
1604=for gengetinfo begin program_build 1901=for gengetinfo begin program_build
1605 1902
1606=item $build_status = $program->build_status ($device) 1903=item $build_status = $program->build_status ($device)
1607 1904
1608Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result. 1905Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_STATUS> and returns the result.
1609 1906
1610=item $string = $program->build_options ($device) 1907=item $string = $program->build_options ($device)
1611 1908
1612Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result. 1909Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_OPTIONS> and returns the result.
1613 1910
1614=item $string = $program->build_log ($device) 1911=item $string = $program->build_log ($device)
1615 1912
1616Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result. 1913Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_LOG> and returns the result.
1914
1915=item $binary_type = $program->binary_type ($device)
1916
1917Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BINARY_TYPE> and returns the result.
1617 1918
1618=for gengetinfo end program_build 1919=for gengetinfo end program_build
1619 1920
1620=item $packed_value = $program->info ($name) 1921=item $packed_value = $program->info ($name)
1621 1922
… …
1625 1926
1626=for gengetinfo begin program 1927=for gengetinfo begin program
1627 1928
1628=item $uint = $program->reference_count 1929=item $uint = $program->reference_count
1629 1930
1630Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result. 1931Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_REFERENCE_COUNT> and returns the result.
1631 1932
1632=item $ctx = $program->context 1933=item $ctx = $program->context
1633 1934
1634Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result. 1935Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_CONTEXT> and returns the result.
1635 1936
1636=item $uint = $program->num_devices 1937=item $uint = $program->num_devices
1637 1938
1638Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result. 1939Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_NUM_DEVICES> and returns the result.
1639 1940
1640=item @devices = $program->devices 1941=item @devices = $program->devices
1641 1942
1642Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result. 1943Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_DEVICES> and returns the result.
1643 1944
1644=item $string = $program->source 1945=item $string = $program->source
1645 1946
1646Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result. 1947Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_SOURCE> and returns the result.
1647 1948
1648=item @ints = $program->binary_sizes 1949=item @ints = $program->binary_sizes
1649 1950
1650Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result. 1951Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_BINARY_SIZES> and returns the result.
1651 1952
1652=for gengetinfo end program 1953=for gengetinfo end program
1653 1954
1654=item @blobs = $program->binaries 1955=item @blobs = $program->binaries
1655 1956
… …
1676 1977
1677=for gengetinfo begin kernel 1978=for gengetinfo begin kernel
1678 1979
1679=item $string = $kernel->function_name 1980=item $string = $kernel->function_name
1680 1981
1681Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result. 1982Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_FUNCTION_NAME> and returns the result.
1682 1983
1683=item $uint = $kernel->num_args 1984=item $uint = $kernel->num_args
1684 1985
1685Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result. 1986Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_NUM_ARGS> and returns the result.
1686 1987
1687=item $uint = $kernel->reference_count 1988=item $uint = $kernel->reference_count
1688 1989
1689Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result. 1990Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_REFERENCE_COUNT> and returns the result.
1690 1991
1691=item $ctx = $kernel->context 1992=item $ctx = $kernel->context
1692 1993
1693Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result. 1994Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_CONTEXT> and returns the result.
1694 1995
1695=item $program = $kernel->program 1996=item $program = $kernel->program
1696 1997
1697Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result. 1998Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_PROGRAM> and returns the result.
1698 1999
1699=for gengetinfo end kernel 2000=for gengetinfo end kernel
1700 2001
1701=item $packed_value = $kernel->work_group_info ($device, $name) 2002=item $packed_value = $kernel->work_group_info ($device, $name)
1702 2003
1703See C<< $platform->info >> for details. 2004See C<< $platform->info >> for details.
1704 2005
1705The reason this method is not called C<info> is that there already is an
1706C<< ->info >> method.
1707
1708L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html> 2006L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html>
1709 2007
1710=for gengetinfo begin kernel_work_group 2008=for gengetinfo begin kernel_work_group
1711 2009
1712=item $int = $kernel->work_group_size ($device) 2010=item $int = $kernel->work_group_size ($device)
1713 2011
1714Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result. 2012Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_WORK_GROUP_SIZE> and returns the result.
1715 2013
1716=item @ints = $kernel->compile_work_group_size ($device) 2014=item @ints = $kernel->compile_work_group_size ($device)
1717 2015
1718Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result. 2016Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result.
1719 2017
1720=item $ulong = $kernel->local_mem_size ($device) 2018=item $ulong = $kernel->local_mem_size ($device)
1721 2019
1722Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result. 2020Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_LOCAL_MEM_SIZE> and returns the result.
1723 2021
1724=item $int = $kernel->preferred_work_group_size_multiple ($device) 2022=item $int = $kernel->preferred_work_group_size_multiple ($device)
1725 2023
1726Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result. 2024Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result.
1727 2025
1728=item $ulong = $kernel->private_mem_size ($device) 2026=item $ulong = $kernel->private_mem_size ($device)
1729 2027
1730Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result. 2028Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PRIVATE_MEM_SIZE> and returns the result.
1731 2029
1732=for gengetinfo end kernel_work_group 2030=for gengetinfo end kernel_work_group
2031
2032=item $packed_value = $kernel->arg_info ($idx, $name)
2033
2034See C<< $platform->info >> for details.
2035
2036L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clGetKernelArgInfo.html>
2037
2038=for gengetinfo begin kernel_arg
2039
2040=item $kernel_arg_address_qualifier = $kernel->arg_address_qualifier ($idx)
2041
2042Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ADDRESS_QUALIFIER> and returns the result.
2043
2044=item $kernel_arg_access_qualifier = $kernel->arg_access_qualifier ($idx)
2045
2046Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ACCESS_QUALIFIER> and returns the result.
2047
2048=item $string = $kernel->arg_type_name ($idx)
2049
2050Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_NAME> and returns the result.
2051
2052=item $kernel_arg_type_qualifier = $kernel->arg_type_qualifier ($idx)
2053
2054Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_QUALIFIER> and returns the result.
2055
2056=item $string = $kernel->arg_name ($idx)
2057
2058Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_NAME> and returns the result.
2059
2060=for gengetinfo end kernel_arg
1733 2061
1734=item $kernel->setf ($format, ...) 2062=item $kernel->setf ($format, ...)
1735 2063
1736Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic 2064Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic
1737way to set arguments (and with OpenCL 1.2 it might be rather slow), you 2065way to set arguments (and with OpenCL 1.2 it might be rather slow), you
… …
1849 2177
1850=for gengetinfo begin event 2178=for gengetinfo begin event
1851 2179
1852=item $queue = $event->command_queue 2180=item $queue = $event->command_queue
1853 2181
1854Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result. 2182Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_QUEUE> and returns the result.
1855 2183
1856=item $command_type = $event->command_type 2184=item $command_type = $event->command_type
1857 2185
1858Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result. 2186Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_TYPE> and returns the result.
1859 2187
1860=item $uint = $event->reference_count 2188=item $uint = $event->reference_count
1861 2189
1862Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result. 2190Calls C<clGetEventInfo> with C<OpenCL::EVENT_REFERENCE_COUNT> and returns the result.
1863 2191
1864=item $uint = $event->command_execution_status 2192=item $uint = $event->command_execution_status
1865 2193
1866Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result. 2194Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_EXECUTION_STATUS> and returns the result.
1867 2195
1868=item $ctx = $event->context 2196=item $ctx = $event->context
1869 2197
1870Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result. 2198Calls C<clGetEventInfo> with C<OpenCL::EVENT_CONTEXT> and returns the result.
1871 2199
1872=for gengetinfo end event 2200=for gengetinfo end event
1873 2201
1874=item $packed_value = $ev->profiling_info ($name) 2202=item $packed_value = $ev->profiling_info ($name)
1875 2203
… …
1882 2210
1883=for gengetinfo begin profiling 2211=for gengetinfo begin profiling
1884 2212
1885=item $ulong = $event->profiling_command_queued 2213=item $ulong = $event->profiling_command_queued
1886 2214
1887Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result. 2215Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_QUEUED> and returns the result.
1888 2216
1889=item $ulong = $event->profiling_command_submit 2217=item $ulong = $event->profiling_command_submit
1890 2218
1891Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result. 2219Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_SUBMIT> and returns the result.
1892 2220
1893=item $ulong = $event->profiling_command_start 2221=item $ulong = $event->profiling_command_start
1894 2222
1895Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result. 2223Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_START> and returns the result.
1896 2224
1897=item $ulong = $event->profiling_command_end 2225=item $ulong = $event->profiling_command_end
1898 2226
1899Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result. 2227Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_END> and returns the result.
1900 2228
1901=for gengetinfo end profiling 2229=for gengetinfo end profiling
1902 2230
1903=back 2231=back
1904 2232
… …
1911=item $ev->set_status ($execution_status) 2239=item $ev->set_status ($execution_status)
1912 2240
1913Sets the execution status of the user event. Can only be called once, 2241Sets the execution status of the user event. Can only be called once,
1914either with OpenCL::COMPLETE or a negative number as status. 2242either with OpenCL::COMPLETE or a negative number as status.
1915 2243
2244execution_status: OpenCL::COMPLETE or a negative integer.
2245
1916L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html> 2246L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html>
1917 2247
1918=back 2248=back
2249
2250=head2 THE OpenCL::Mapped CLASS
2251
2252This class represents objects mapped into host memory. They are
2253represented by a blessed string scalar. The string data is the mapped
2254memory area, that is, if you read or write it, then the mapped object is
2255accessed directly.
2256
2257You must only ever use operations that modify the string in-place - for
2258example, a C<substr> that doesn't change the length, or maybe a regex that
2259doesn't change the length. Any other operation might cause the data to be
2260copied.
2261
2262When the object is destroyed it will enqueue an implicit unmap operation
2263on the queue that was used to create it.
2264
2265Keep in mind that you I<need> to unmap (or destroy) mapped objects before
2266OpenCL sees the changes, even if some implementations don't need this
2267sometimes.
2268
2269Example, replace the first two floats in the mapped buffer by 1 and 2.
2270
2271 my $mapped = $queue->map_buffer ($buf, ...
2272 $mapped->event->wait; # make sure it's there
2273
2274 # now replace first 8 bytes by new data, which is exactly 8 bytes long
2275 # we blindly assume device endianness to equal host endianness
2276 # (and of course, we assume iee 754 single precision floats :)
2277 substr $$mapped, 0, 8, pack "f*", 1, 2;
2278
2279=over 4
2280
2281=item $ev = $mapped->unmap ($wait_events...)
2282
2283Unmaps the mapped memory object, using the queue originally used to create
2284it, quite similarly to C<< $queue->unmap ($mapped, ...) >>.
2285
2286=item $bool = $mapped->mapped
2287
2288Returns whether the object is still mapped - true before an C<unmap> is
2289enqueued, false afterwards.
2290
2291=item $ev = $mapped->event
2292
2293Return the event object associated with the mapped object. Initially, this
2294will be the event object created when mapping the object, and after an
2295unmap, this will be the event object that the unmap operation created.
2296
2297=item $mapped->wait
2298
2299Same as C<< $mapped->event->wait >> - makes sure no operations on this
2300mapped object are outstanding.
2301
2302=item $bytes = $mapped->size
2303
2304Returns the size of the mapped area, in bytes. Same as C<length $$mapped>.
2305
2306=item $ptr = $mapped->ptr
2307
2308Returns the raw memory address of the mapped area.
2309
2310=item $mapped->set ($offset, $data)
2311
2312Replaces the data at the given C<$offset> in the memory area by the new
2313C<$data>. This method is safer than direct manipulation of C<$mapped>
2314because it does bounds-checking, but also slower.
2315
2316=item $data = $mapped->get ($offset, $length)
2317
2318Returns (without copying) a scalar representing the data at the given
2319C<$offset> and C<$length> in the mapped memory area. This is the same as
2320the following substr, except much slower;
2321
2322 $data = substr $$mapped, $offset, $length
2323
2324=cut
2325
2326sub OpenCL::Mapped::get {
2327 substr ${$_[0]}, $_[1], $_[2]
2328}
2329
2330=back
2331
2332=head2 THE OpenCL::MappedBuffer CLASS
2333
2334This is a subclass of OpenCL::Mapped, representing mapped buffers.
2335
2336=head2 THE OpenCL::MappedImage CLASS
2337
2338This is a subclass of OpenCL::Mapped, representing mapped images.
2339
2340=over 4
2341
2342=item $bytes = $mapped->row_pitch
2343
2344=item $bytes = $mapped->slice_pitch
2345
2346Return the row or slice pitch of the image that has been mapped.
2347
2348=back
2349
1919 2350
1920=cut 2351=cut
1921 2352
19221; 23531;
1923 2354

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