| 1 |
=head1 NAME |
| 2 |
|
| 3 |
OpenCL - Open Computing Language Bindings |
| 4 |
|
| 5 |
=head1 SYNOPSIS |
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|
| 7 |
use OpenCL; |
| 8 |
|
| 9 |
=head1 DESCRIPTION |
| 10 |
|
| 11 |
This is an early release which might be useful, but hasn't seen any testing. |
| 12 |
|
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=head1 HELPFUL RESOURCES |
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|
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The OpenCL spec used to develop this module (1.2 spec was available, but |
| 16 |
no implementation was available to me :). |
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|
| 18 |
http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf |
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|
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OpenCL manpages: |
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|
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http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/ |
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|
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=head1 EXAMPLES |
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|
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=head2 Enumerate all devices and get contexts for them. |
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|
| 28 |
for my $platform (OpenCL::platforms) { |
| 29 |
warn $platform->info (OpenCL::PLATFORM_NAME); |
| 30 |
warn $platform->info (OpenCL::PLATFORM_EXTENSIONS); |
| 31 |
for my $device ($platform->devices) { |
| 32 |
warn $device->info (OpenCL::DEVICE_NAME); |
| 33 |
my $ctx = $device->context_simple; |
| 34 |
# do stuff |
| 35 |
} |
| 36 |
} |
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|
| 38 |
=head2 Get a useful context and a command queue. |
| 39 |
|
| 40 |
my $dev = ((OpenCL::platforms)[0]->devices)[0]; |
| 41 |
my $ctx = $dev->context_simple; |
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my $queue = $ctx->command_queue_simple ($dev); |
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|
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=head2 Print all supported image formats of a context. |
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|
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for my $type (OpenCL::MEM_OBJECT_IMAGE2D, OpenCL::MEM_OBJECT_IMAGE3D) { |
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say "supported image formats for ", OpenCL::enum2str $type; |
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|
| 49 |
for my $f ($ctx->supported_image_formats (0, $type)) { |
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printf " %-10s %-20s\n", OpenCL::enum2str $f->[0], OpenCL::enum2str $f->[1]; |
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} |
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} |
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|
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=head2 Create a buffer with some predefined data, read it back synchronously, |
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then asynchronously. |
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|
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my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut"); |
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|
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$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data); |
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warn $data; |
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|
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my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data); |
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$ev->wait; |
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warn $data; |
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|
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=head2 Create and build a program, then create a kernel out of one of its |
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functions. |
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|
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my $src = ' |
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__kernel void |
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squareit (__global float *input, __global float *output) |
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{ |
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size_t id = get_global_id (0); |
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output [id] = input [id] * input [id]; |
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} |
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'; |
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|
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my $prog = $ctx->program_with_source ($src); |
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|
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eval { $prog->build ($dev); 1 } |
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or die $prog->build_info ($dev, OpenCL::PROGRAM_BUILD_LOG); |
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|
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my $kernel = $prog->kernel ("squareit"); |
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|
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=head2 Create some input and output float buffers, then call squareit on them. |
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|
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my $input = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, pack "f*", 1, 2, 3, 4.5); |
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my $output = $ctx->buffer (0, OpenCL::SIZEOF_FLOAT * 5); |
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|
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# set buffer |
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$kernel->set_buffer (0, $input); |
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$kernel->set_buffer (1, $output); |
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|
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# execute it for all 4 numbers |
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$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef); |
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|
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# enqueue a synchronous read |
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$queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data); |
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|
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# print the results: |
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say join ", ", unpack "f*", $data; |
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|
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=head2 The same enqueue operations as before, but assuming an out-of-order queue, |
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showing off barriers. |
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|
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# execute it for all 4 numbers |
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$queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef); |
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|
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# enqueue a barrier to ensure in-order execution |
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$queue->enqueue_barrier; |
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|
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# enqueue an async read |
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$queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data); |
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|
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# wait for all requests to finish |
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$queue->finish; |
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|
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=head2 The same enqueue operations as before, but assuming an out-of-order queue, |
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showing off event objects and wait lists. |
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|
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# execute it for all 4 numbers |
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my $ev = $queue->enqueue_nd_range_kernel ($kernel, undef, [4], undef); |
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|
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# enqueue an async read |
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$ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev); |
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|
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# wait for the last event to complete |
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$ev->wait; |
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|
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=head1 DOCUMENTATION |
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|
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=head2 BASIC CONVENTIONS |
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|
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This is not a 1:1 C-style translation of OpenCL to Perl - instead I |
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attempted to make the interface as type-safe as possible and introducing |
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object syntax where it makes sense. There are a number of important |
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differences between the OpenCL C API and this module: |
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|
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=over 4 |
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|
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=item * Object lifetime managament is automatic - there is no need |
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to free objects explicitly (C<clReleaseXXX>), the release function |
| 143 |
is called automatically once all Perl references to it go away. |
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|
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=item * OpenCL uses CamelCase for function names (C<clGetPlatformInfo>), |
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while this module uses underscores as word separator and often leaves out |
| 147 |
prefixes (C<< $platform->info >>). |
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|
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=item * OpenCL often specifies fixed vector function arguments as short |
| 150 |
arrays (C<size_t origin[3]>), while this module explicitly expects the |
| 151 |
components as separate arguments- |
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|
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=item * Where possible, the row_pitch value is calculated from the perl |
| 154 |
scalar length and need not be specified. |
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|
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=item * When enqueuing commands, the wait list is specified by adding |
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extra arguments to the function - everywhere a C<$wait_events...> argument |
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is documented this can be any number of event objects. |
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|
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=item * When enqueuing commands, if the enqueue method is called in void |
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context, no event is created. In all other contexts an event is returned |
| 162 |
by the method. |
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|
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=item * This module expects all functions to return C<CL_SUCCESS>. If any |
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other status is returned the function will throw an exception, so you |
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don't normally have to to any error checking. |
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|
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=back |
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|
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=head2 THE OpenCL PACKAGE |
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|
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=over 4 |
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|
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=item $int = OpenCL::errno |
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|
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The last error returned by a function - it's only changed on errors. |
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|
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=item $str = OpenCL::err2str $errval |
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|
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Comverts an error value into a human readable string. |
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|
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=item $str = OpenCL::err2str $enum |
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|
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Converts most enum values (inof parameter names, image format constants, |
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object types, addressing and filter modes, command types etc.) into a |
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human readbale string. When confronted with some random integer it can be |
| 187 |
very helpful to pass it through this function to maybe get some readable |
| 188 |
string out of it. |
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|
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=item @platforms = OpenCL::platforms |
| 191 |
|
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Returns all available OpenCL::Platform objects. |
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|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html> |
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|
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=item $ctx = OpenCL::context_from_type_simple $type = OpenCL::DEVICE_TYPE_DEFAULT |
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|
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Tries to create a context from a default device and platform - never worked for me. |
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|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
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|
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=item OpenCL::wait_for_events $wait_events... |
| 203 |
|
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Waits for all events to complete. |
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|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
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|
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=back |
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|
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=head2 THE OpenCL::Platform CLASS |
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|
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=over 4 |
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|
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=item $packed_value = $platform->info ($name) |
| 215 |
|
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Calls C<clGetPlatformInfo> and returns the packed, raw value - for |
| 217 |
strings, this will be the string, for other values you probably need to |
| 218 |
use the correct C<unpack>. This might get improved in the future. Hopefully. |
| 219 |
|
| 220 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html> |
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|
| 222 |
=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL) |
| 223 |
|
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Returns a list of matching OpenCL::Device objects. |
| 225 |
|
| 226 |
=item $ctx = $platform->context_from_type_simple ($type = OpenCL::DEVICE_TYPE_DEFAULT) |
| 227 |
|
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Tries to create a context. Never worked for me. |
| 229 |
|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
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|
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=back |
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|
| 234 |
=head2 THE OpenCL::Device CLASS |
| 235 |
|
| 236 |
=over 4 |
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|
| 238 |
=item $packed_value = $device->info ($name) |
| 239 |
|
| 240 |
See C<< $platform->info >> for details. |
| 241 |
|
| 242 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html> |
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|
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=item $ctx = $device->context_simple |
| 245 |
|
| 246 |
Convenience function to create a new OpenCL::Context object. |
| 247 |
|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
| 249 |
|
| 250 |
=back |
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|
| 252 |
=head2 THE OpenCL::Context CLASS |
| 253 |
|
| 254 |
=over 4 |
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|
| 256 |
=item $packed_value = $ctx->info ($name) |
| 257 |
|
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See C<< $platform->info >> for details. |
| 259 |
|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html> |
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|
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=item $queue = $ctx->command_queue_simple ($device) |
| 263 |
|
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Convenience function to create a new OpenCL::Queue object from the context and the given device. |
| 265 |
|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html> |
| 267 |
|
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=item $ev = $ctx->user_event |
| 269 |
|
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Creates a new OpenCL::UserEvent object. |
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|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateUserEvent.html> |
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|
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=item $buf = $ctx->buffer ($flags, $len) |
| 275 |
|
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Creates a new OpenCL::Buffer object with the given flags and octet-size. |
| 277 |
|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html> |
| 279 |
|
| 280 |
=item $buf = $ctx->buffer_sv ($flags, $data) |
| 281 |
|
| 282 |
Creates a new OpenCL::Buffer object and initialise it with the given data values. |
| 283 |
|
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=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $data) |
| 285 |
|
| 286 |
Creates a new OpenCL::Image2D object and optionally initialises it with the given data values. |
| 287 |
|
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L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html> |
| 289 |
|
| 290 |
=item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $slice_pitch, $data) |
| 291 |
|
| 292 |
Creates a new OpenCL::Image3D object and optionally initialises it with the given data values. |
| 293 |
|
| 294 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
| 295 |
|
| 296 |
=item @formats = $ctx->supported_image_formats ($flags, $image_type) |
| 297 |
|
| 298 |
Returns a list of matching image formats - each format is an arrayref with |
| 299 |
two values, $channel_order and $channel_type, in it. |
| 300 |
|
| 301 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSupportedImageFormats.html> |
| 302 |
|
| 303 |
=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode) |
| 304 |
|
| 305 |
Creates a new OpenCL::Sampler object. |
| 306 |
|
| 307 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html> |
| 308 |
|
| 309 |
=item $program = $ctx->program_with_source ($string) |
| 310 |
|
| 311 |
Creates a new OpenCL::Program object from the given source code. |
| 312 |
|
| 313 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html> |
| 314 |
|
| 315 |
=back |
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|
| 317 |
=head2 THE OpenCL::Queue CLASS |
| 318 |
|
| 319 |
An OpenCL::Queue represents an execution queue for OpenCL. You execute |
| 320 |
requests by calling their respective C<enqueue_xxx> method and waitinf for |
| 321 |
it to complete in some way. |
| 322 |
|
| 323 |
All the enqueue methods return an event object that can be used to wait |
| 324 |
for completion, unless the method is called in void context, in which case |
| 325 |
no event object is created. |
| 326 |
|
| 327 |
They also allow you to specify any number of other event objects that this |
| 328 |
request has to wait for before it starts executing, by simply passing the |
| 329 |
event objects as extra parameters to the enqueue methods. |
| 330 |
|
| 331 |
Queues execute in-order by default, without any parallelism, so in most |
| 332 |
cases it's not necessary to wait for or create event objects. |
| 333 |
|
| 334 |
=over 4 |
| 335 |
|
| 336 |
=item $packed_value = $ctx->info ($name) |
| 337 |
|
| 338 |
See C<< $platform->info >> for details. |
| 339 |
|
| 340 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetCommandQueueInfo.html> |
| 341 |
|
| 342 |
=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...) |
| 343 |
|
| 344 |
Reads data from buffer into the given string. |
| 345 |
|
| 346 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html> |
| 347 |
|
| 348 |
=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...) |
| 349 |
|
| 350 |
Writes data to buffer from the given string. |
| 351 |
|
| 352 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html> |
| 353 |
|
| 354 |
=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...) |
| 355 |
|
| 356 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html> |
| 357 |
|
| 358 |
=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
| 359 |
|
| 360 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html> |
| 361 |
|
| 362 |
=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $data, $wait_events...) |
| 363 |
|
| 364 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html> |
| 365 |
|
| 366 |
=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, 4dst_row_pitch, $dst_slice_pitch, $ait_event...) |
| 367 |
|
| 368 |
Yeah. |
| 369 |
|
| 370 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html> |
| 371 |
|
| 372 |
=item $ev = $queue->enqueue_copy_buffer_to_image (OpenCL::Buffer src, OpenCL::Image dst, size_t src_offset, size_t dst_x, size_t dst_y, size_t dst_z, size_t width, size_t height, size_t depth, ...) |
| 373 |
|
| 374 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>. |
| 375 |
|
| 376 |
=item $ev = $queue->enqueue_copy_image (OpenCL::Image src, OpenCL::Buffer dst, size_t src_x, size_t src_y, size_t src_z, size_t dst_x, size_t dst_y, size_t dst_z, size_t width, size_t height, size_t depth, ...) |
| 377 |
|
| 378 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html> |
| 379 |
|
| 380 |
=item $ev = $queue->enqueue_copy_image_to_buffer (OpenCL::Image src, OpenCL::Buffer dst, size_t src_x, size_t src_y, size_t src_z, size_t width, size_t height, size_t depth, size_t dst_offset, ...) |
| 381 |
|
| 382 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html> |
| 383 |
|
| 384 |
=item $ev = $queue->enqueue_task ($kernel, $wait_events...) |
| 385 |
|
| 386 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html> |
| 387 |
|
| 388 |
=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...) |
| 389 |
|
| 390 |
Enqueues a kernel execution. |
| 391 |
|
| 392 |
@$global_work_size must be specified as a reference to an array of |
| 393 |
integers specifying the work sizes (element counts). |
| 394 |
|
| 395 |
@$global_work_offset must be either C<undef> (in which case all offsets |
| 396 |
are C<0>), or a reference to an array of work offsets, with the same number |
| 397 |
of elements as @$global_work_size. |
| 398 |
|
| 399 |
@$local_work_size must be either C<undef> (in which case the |
| 400 |
implementation is supposed to choose good local work sizes), or a |
| 401 |
reference to an array of local work sizes, with the same number of |
| 402 |
elements as @$global_work_size. |
| 403 |
|
| 404 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html> |
| 405 |
|
| 406 |
=item $ev = $queue->enqueue_marker |
| 407 |
|
| 408 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMarker.html> |
| 409 |
|
| 410 |
=item $ev = $queue->enqueue_wait_for_events ($wait_events...) |
| 411 |
|
| 412 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html> |
| 413 |
|
| 414 |
=item $queue->enqueue_barrier |
| 415 |
|
| 416 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueBarrier.html> |
| 417 |
|
| 418 |
=item $queue->flush |
| 419 |
|
| 420 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html> |
| 421 |
|
| 422 |
=item $queue->finish |
| 423 |
|
| 424 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFinish.html> |
| 425 |
|
| 426 |
=back |
| 427 |
|
| 428 |
=head2 THE OpenCL::Memory CLASS |
| 429 |
|
| 430 |
This the superclass of all memory objects - OpenCL::Buffer, OpenCL::Image, |
| 431 |
OpenCL::Image2D and OpenCL::Image3D. The subclasses of this class |
| 432 |
currently only exist to allow type-checking. |
| 433 |
|
| 434 |
=over 4 |
| 435 |
|
| 436 |
=item $packed_value = $memory->info ($name) |
| 437 |
|
| 438 |
See C<< $platform->info >> for details. |
| 439 |
|
| 440 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html> |
| 441 |
|
| 442 |
=back |
| 443 |
|
| 444 |
=head2 THE OpenCL::Sampler CLASS |
| 445 |
|
| 446 |
=over 4 |
| 447 |
|
| 448 |
=item $packed_value = $sampler->info ($name) |
| 449 |
|
| 450 |
See C<< $platform->info >> for details. |
| 451 |
|
| 452 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html> |
| 453 |
|
| 454 |
=back |
| 455 |
|
| 456 |
=head2 THE OpenCL::Program CLASS |
| 457 |
|
| 458 |
=over 4 |
| 459 |
|
| 460 |
=item $packed_value = $program->info ($name) |
| 461 |
|
| 462 |
See C<< $platform->info >> for details. |
| 463 |
|
| 464 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html> |
| 465 |
|
| 466 |
=item $program->build ($device, $options = "") |
| 467 |
|
| 468 |
Tries to build the program with the givne options. |
| 469 |
|
| 470 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html> |
| 471 |
|
| 472 |
=item $packed_value = $program->build_info ($device, $name) |
| 473 |
|
| 474 |
Similar to C<< $platform->info >>, but returns build info for a previous |
| 475 |
build attempt for the given device. |
| 476 |
|
| 477 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html> |
| 478 |
|
| 479 |
=item $kernel = $program->kernel ($function_name) |
| 480 |
|
| 481 |
Creates an OpenCL::Kernel object out of the named C<__kernel> function in |
| 482 |
the program. |
| 483 |
|
| 484 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html> |
| 485 |
|
| 486 |
=back |
| 487 |
|
| 488 |
=head2 THE OpenCL::Kernel CLASS |
| 489 |
|
| 490 |
=over 4 |
| 491 |
|
| 492 |
=item $packed_value = $kernel->info ($name) |
| 493 |
|
| 494 |
See C<< $platform->info >> for details. |
| 495 |
|
| 496 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html> |
| 497 |
|
| 498 |
=item $kernel->set_TYPE ($index, $value) |
| 499 |
|
| 500 |
This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>. |
| 501 |
|
| 502 |
TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>, |
| 503 |
C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>, |
| 504 |
C<image2d>, C<image3d>, C<sampler> or C<event>. |
| 505 |
|
| 506 |
Chars and integers (including the half type) are specified as integers, |
| 507 |
float and double as floating point values, memory/buffer/image2d/image3d |
| 508 |
must be an object of that type or C<undef>, and sampler and event must be |
| 509 |
objects of that type. |
| 510 |
|
| 511 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html> |
| 512 |
|
| 513 |
=back |
| 514 |
|
| 515 |
=head2 THE OpenCL::Event CLASS |
| 516 |
|
| 517 |
This is the superclass for all event objects (including OpenCL::UserEvent |
| 518 |
objects). |
| 519 |
|
| 520 |
=over 4 |
| 521 |
|
| 522 |
=item $packed_value = $ev->info ($name) |
| 523 |
|
| 524 |
See C<< $platform->info >> for details. |
| 525 |
|
| 526 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html> |
| 527 |
|
| 528 |
=item $ev->wait |
| 529 |
|
| 530 |
Waits for the event to complete. |
| 531 |
|
| 532 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
| 533 |
|
| 534 |
=back |
| 535 |
|
| 536 |
=head2 THE OpenCL::UserEvent CLASS |
| 537 |
|
| 538 |
This is a subclass of OpenCL::Event. |
| 539 |
|
| 540 |
=over 4 |
| 541 |
|
| 542 |
=item $ev->set_status ($execution_status) |
| 543 |
|
| 544 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html> |
| 545 |
|
| 546 |
=back |
| 547 |
|
| 548 |
=cut |
| 549 |
|
| 550 |
package OpenCL; |
| 551 |
|
| 552 |
use common::sense; |
| 553 |
|
| 554 |
BEGIN { |
| 555 |
our $VERSION = '0.03'; |
| 556 |
|
| 557 |
require XSLoader; |
| 558 |
XSLoader::load (__PACKAGE__, $VERSION); |
| 559 |
|
| 560 |
@OpenCL::Buffer::ISA = |
| 561 |
@OpenCL::Image::ISA = OpenCL::Memory::; |
| 562 |
|
| 563 |
@OpenCL::Image2D::ISA = |
| 564 |
@OpenCL::Image3D::ISA = OpenCL::Image::; |
| 565 |
|
| 566 |
@OpenCL::UserEvent::ISA = OpenCL::Event::; |
| 567 |
} |
| 568 |
|
| 569 |
1; |
| 570 |
|
| 571 |
=head1 AUTHOR |
| 572 |
|
| 573 |
Marc Lehmann <schmorp@schmorp.de> |
| 574 |
http://home.schmorp.de/ |
| 575 |
|
| 576 |
=cut |
| 577 |
|
