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1.1 |
=head1 NAME |
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OpenCL - bindings to, well, OpenCL |
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=head1 SYNOPSIS |
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use OpenCL; |
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=head1 DESCRIPTION |
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This is an early release which is not useful yet. |
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root |
1.3 |
=head1 HELPFUL RESOURCES |
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The OpenCL spec used to dveelop this module (1.2 spec was available, but |
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no implementation was available to me :). |
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http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf |
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OpenCL manpages: |
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http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/ |
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=head1 EXAMPLES |
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1.1 |
Enumerate all devices and get contexts for them; |
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for my $platform (OpenCL::platforms) { |
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warn $platform->info (OpenCL::PLATFORM_NAME); |
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warn $platform->info (OpenCL::PLATFORM_EXTENSIONS); |
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for my $device ($platform->devices) { |
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warn $device->info (OpenCL::DEVICE_NAME); |
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my $ctx = $device->context_simple; |
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# do stuff |
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} |
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} |
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Get a useful context and a command queue: |
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my $dev = ((OpenCL::platforms)[0]->devices)[0]; |
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my $ctx = $dev->context_simple; |
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my $queue = $ctx->command_queue_simple ($dev); |
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root |
1.3 |
Create a buffer with some predefined data, read it back synchronously, |
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then asynchronously: |
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my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut"); |
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$queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data); |
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warn $data; |
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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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Print all supported image formats: |
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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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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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Create and build a program, then create a kernel out of one of its |
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functions: |
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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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my $prog = $ctx->program_with_source ($src); |
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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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my $kernel = $prog->kernel ("squareit"); |
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1.1 |
=over 4 |
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=cut |
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package OpenCL; |
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1.2 |
use common::sense; |
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1.1 |
BEGIN { |
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1.2 |
our $VERSION = '0.01'; |
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1.1 |
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require XSLoader; |
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XSLoader::load (__PACKAGE__, $VERSION); |
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1.3 |
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@OpenCL::Buffer::ISA = |
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@OpenCL::Image::ISA = OpenCL::Memory::; |
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@OpenCL::Image2D::ISA = |
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@OpenCL::Image3D::ISA = OpenCL::Image::; |
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1.1 |
} |
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1; |
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=back |
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=head1 AUTHOR |
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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=cut |
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