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=head1 NAME |
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|
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OpenCL - Open Computing Language Bindings |
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|
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=head1 SYNOPSIS |
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|
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use OpenCL; |
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|
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=head1 DESCRIPTION |
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|
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This is an early release which might be useful, but hasn't seen much testing. |
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|
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=head2 OpenCL FROM 10000 FEET HEIGHT |
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|
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Here is a high level overview of OpenCL: |
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|
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First you need to find one or more OpenCL::Platforms (kind of like |
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vendors) - usually there is only one. |
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|
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Each platform gives you access to a number of OpenCL::Device objects, e.g. |
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your graphics card. |
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|
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From a platform and some device(s), you create an OpenCL::Context, which is |
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a very central object in OpenCL: Once you have a context you can create |
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most other objects: |
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|
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OpenCL::Program objects, which store source code and, after building for a |
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specific device ("compiling and linking"), also binary programs. For each |
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kernel function in a program you can then create an OpenCL::Kernel object |
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which represents basically a function call with argument values. |
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|
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OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat |
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memory areas, think arrays or structs) and OpenCL::Image objects (think 2d |
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or 3d array) for bulk data and input and output for kernels. |
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|
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OpenCL::Sampler objects, which are kind of like texture filter modes in |
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OpenGL. |
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|
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OpenCL::Queue objects - command queues, which allow you to submit memory |
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reads, writes and copies, as well as kernel calls to your devices. They |
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also offer a variety of methods to synchronise request execution, for |
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example with barriers or OpenCL::Event objects. |
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|
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OpenCL::Event objects are used to signal when something is complete. |
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|
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=head2 HELPFUL RESOURCES |
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|
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The OpenCL spec used to develop this module (1.2 spec was available, but |
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no implementation was available to me :). |
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|
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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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If you are into UML class diagrams, the following diagram might help - if |
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not, it will be mildly cobfusing: |
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|
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http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/classDiagram.html |
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|
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Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it |
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is, but at least it's free of charge: |
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|
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http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf |
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|
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And here's NVIDIA's OpenCL Best Practises Guide: |
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|
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http://developer.download.nvidia.com/compute/cuda/3_2/toolkit/docs/OpenCL_Best_Practices_Guide.pdf |
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|
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=head1 BASIC WORKFLOW |
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|
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To get something done, you basically have to do this once (refer to the |
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examples below for actual code, this is just a high-level description): |
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|
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Find some platform (e.g. the first one) and some device(s) (e.g. the first |
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device of the platform), and create a context from those. |
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|
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Create program objects from your OpenCL source code, then build (compile) |
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the programs for each device you want to run them on. |
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|
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Create kernel objects for all kernels you want to use (surprisingly, these |
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are not device-specific). |
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|
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Then, to execute stuff, you repeat these steps, possibly resuing or |
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sharing some buffers: |
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|
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Create some input and output buffers from your context. Set these as |
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arguments to your kernel. |
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|
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Enqueue buffer writes to initialise your input buffers (when not |
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initialised at creation time). |
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|
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Enqueue the kernel execution. |
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|
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Enqueue buffer reads for your output buffer to read results. |
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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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|
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Best run this once to get a feel for the platforms and devices in your |
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system. |
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|
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for my $platform (OpenCL::platforms) { |
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printf "platform: %s\n", $platform->name; |
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printf "extensions: %s\n", $platform->extensions; |
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for my $device ($platform->devices) { |
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printf "+ device: %s\n", $device->name; |
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my $ctx = $platform->context (undef, [$device]); |
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# do stuff |
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} |
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} |
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|
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=head2 Get a useful context and a command queue. |
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|
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This is a useful boilerplate for any OpenCL program that only wants to use |
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one device, |
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|
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my ($platform) = OpenCL::platforms; # find first platform |
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my ($dev) = $platform->devices; # find first device of platform |
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my $ctx = $platform->context (undef, [$dev]); # create context out of those |
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my $queue = $ctx->queue ($dev); # create a command queue for the device |
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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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Best run this once for your context, to see whats available and how to |
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gather information. |
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|
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for my $type (OpenCL::MEM_OBJECT_IMAGE2D, OpenCL::MEM_OBJECT_IMAGE3D) { |
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print "supported image formats for ", OpenCL::enum2str $type, "\n"; |
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|
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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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|
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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 $data); |
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print "$data\n"; |
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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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print "$data\n"; # prints "elm" |
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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 $src = ' |
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kernel void |
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squareit (global float *input, global float *output) |
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{ |
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$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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# build croaks on compile errors, so catch it and print the compile errors |
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eval { $prog->build ($dev, "-cl-fast-relaxed-math"); 1 } |
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or die $prog->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 the |
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'squareit' kernel 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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printf "%s\n", 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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=head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia |
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set tunnel effect. |
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|
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This is quite a long example to get you going. |
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|
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use OpenGL ":all"; |
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use OpenCL; |
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|
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# open a window and create a gl texture |
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OpenGL::glpOpenWindow width => 256, height => 256; |
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my $texid = glGenTextures_p 1; |
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glBindTexture GL_TEXTURE_2D, $texid; |
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glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0; |
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|
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# find and use the first opencl device that let's us get a shared opengl context |
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my $platform; |
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my $dev; |
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my $ctx; |
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|
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for (OpenCL::platforms) { |
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$platform = $_; |
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for ($platform->devices) { |
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$dev = $_; |
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$ctx = $platform->context ([OpenCL::GLX_DISPLAY_KHR, undef, OpenCL::GL_CONTEXT_KHR, undef], [$dev]) |
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and last; |
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} |
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} |
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|
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$ctx |
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or die "cannot find suitable OpenCL device\n"; |
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|
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my $queue = $ctx->queue ($dev); |
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|
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# now attach an opencl image2d object to the opengl texture |
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my $tex = $ctx->gl_texture2d (OpenCL::MEM_WRITE_ONLY, GL_TEXTURE_2D, 0, $texid); |
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|
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# now the boring opencl code |
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my $src = <<EOF; |
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kernel void |
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juliatunnel (write_only image2d_t img, float time) |
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{ |
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float2 p = (float2)(get_global_id (0), get_global_id (1)) / 256.f * 2.f - 1.f; |
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|
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float2 m = (float2)(1.f, p.y) / fabs (p.x); |
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m.x = fabs (fmod (m.x + time * 0.05f, 4.f)) - 2.f; |
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|
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float2 z = m; |
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float2 c = (float2)(sin (time * 0.05005), cos (time * 0.06001)); |
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|
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for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i) |
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z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c; |
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|
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float3 colour = (float3)(z.x, z.y, z.x * z.y); |
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write_imagef (img, (int2)(get_global_id (0), get_global_id (1)), (float4)(colour * p.x * p.x, 1.)); |
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} |
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EOF |
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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 $prog->build_log ($dev); |
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|
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my $kernel = $prog->kernel ("juliatunnel"); |
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|
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# program compiled, kernel ready, now draw and loop |
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|
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for (my $time; ; ++$time) { |
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# acquire objects from opengl |
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$queue->enqueue_acquire_gl_objects ([$tex]); |
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|
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# configure and run our kernel |
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$kernel->set_image2d (0, $tex); |
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$kernel->set_float (1, $time); |
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$queue->enqueue_nd_range_kernel ($kernel, undef, [256, 256], undef); |
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|
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# release objects to opengl again |
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$queue->enqueue_release_gl_objects ([$tex]); |
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|
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# wait |
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$queue->finish; |
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|
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# now draw the texture, the defaults should be all right |
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glTexParameterf GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST; |
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|
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glEnable GL_TEXTURE_2D; |
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glBegin GL_QUADS; |
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glTexCoord2f 0, 1; glVertex3i -1, -1, -1; |
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glTexCoord2f 0, 0; glVertex3i 1, -1, -1; |
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glTexCoord2f 1, 0; glVertex3i 1, 1, -1; |
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glTexCoord2f 1, 1; glVertex3i -1, 1, -1; |
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glEnd; |
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|
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glXSwapBuffers; |
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|
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select undef, undef, undef, 1/60; |
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} |
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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 one-to-one C-style translation of OpenCL to Perl - instead |
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I attempted to make the interface as type-safe as possible by 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 |
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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 |
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(e.g. C<clGetPlatformIDs>, C<clGetPlatformInfo>), while this module |
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uses underscores as word separator and often leaves out prefixes |
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(C<OpenCL::platforms>, C<< $platform->info >>). |
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|
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=item * OpenCL often specifies fixed vector function arguments as short |
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arrays (C<size_t origin[3]>), while this module explicitly expects the |
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components as separate arguments (C<$orig_x, $orig_y, $orig_z>) in |
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function calls. |
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|
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=item * Structures are often specified by flattening out their components |
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as with short vectors, and returned as arrayrefs. |
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|
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=item * When enqueuing commands, the wait list is specified by adding |
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extra arguments to the function - anywhere a C<$wait_events...> argument |
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is documented this can be any number of event objects. As an extsnion |
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implemented by this module, C<undef> values will be ignored in the event |
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list. |
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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 |
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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 PERL AND OPENCL TYPES |
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|
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This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack |
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format equivalents: |
359 |
|
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OpenCL perl PDL pack/unpack |
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char IV - c |
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uchar IV byte C |
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short IV short s |
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ushort IV ushort S |
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int IV long? l |
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uint IV - L |
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long IV longlong q |
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ulong IV - Q |
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float NV float f |
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half IV ushort S |
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double NV double d |
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|
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=head2 GLX SUPPORT |
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|
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Due to the sad state that OpenGL support is in in Perl (mostly the OpenGL |
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module, which has little to no documentation and has little to no support |
377 |
for glX), this module, as a special extension, treats context creation |
378 |
properties C<OpenCL::GLX_DISPLAY_KHR> and C<OpenCL::GL_CONTEXT_KHR> |
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specially: If either or both of these are C<undef>, then the OpenCL |
380 |
module tries to dynamically resolve C<glXGetCurrentDisplay> and |
381 |
C<glXGetCurrentContext>, call these functions and use their return values |
382 |
instead. |
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|
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For this to work, the OpenGL library must be loaded, a GLX context must |
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have been created and be made current, and C<dlsym> must be available and |
386 |
capable of finding the function via C<RTLD_DEFAULT>. |
387 |
|
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=head2 THE OpenCL PACKAGE |
389 |
|
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=over 4 |
391 |
|
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=item $int = OpenCL::errno |
393 |
|
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The last error returned by a function - it's only valid after an error occured |
395 |
and before calling another OpenCL function. |
396 |
|
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=item $str = OpenCL::err2str $errval |
398 |
|
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Comverts an error value into a human readable string. |
400 |
|
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=item $str = OpenCL::enum2str $enum |
402 |
|
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Converts most enum values (of parameter names, image format constants, |
404 |
object types, addressing and filter modes, command types etc.) into a |
405 |
human readable string. When confronted with some random integer it can be |
406 |
very helpful to pass it through this function to maybe get some readable |
407 |
string out of it. |
408 |
|
409 |
=item @platforms = OpenCL::platforms |
410 |
|
411 |
Returns all available OpenCL::Platform objects. |
412 |
|
413 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html> |
414 |
|
415 |
=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef |
416 |
|
417 |
Tries to create a context from a default device and platform - never worked for me. |
418 |
|
419 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
420 |
|
421 |
=item OpenCL::wait_for_events $wait_events... |
422 |
|
423 |
Waits for all events to complete. |
424 |
|
425 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
426 |
|
427 |
=back |
428 |
|
429 |
=head2 THE OpenCL::Platform CLASS |
430 |
|
431 |
=over 4 |
432 |
|
433 |
=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL) |
434 |
|
435 |
Returns a list of matching OpenCL::Device objects. |
436 |
|
437 |
=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef) |
438 |
|
439 |
Tries to create a context. Never worked for me, and you need devices explicitly anyway. |
440 |
|
441 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
442 |
|
443 |
=item $ctx = $platform->context ($properties = undef, @$devices, $notify = undef) |
444 |
|
445 |
Create a new OpenCL::Context object using the given device object(s)- a |
446 |
CL_CONTEXT_PLATFORM property is supplied automatically. |
447 |
|
448 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
449 |
|
450 |
=item $packed_value = $platform->info ($name) |
451 |
|
452 |
Calls C<clGetPlatformInfo> and returns the packed, raw value - for |
453 |
strings, this will be the string (possibly including terminating \0), for |
454 |
other values you probably need to use the correct C<unpack>. |
455 |
|
456 |
It's best to avoid this method and use one of the following convenience |
457 |
wrappers. |
458 |
|
459 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html> |
460 |
|
461 |
=for gengetinfo begin platform |
462 |
|
463 |
=item $string = $platform->profile |
464 |
|
465 |
Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result. |
466 |
|
467 |
=item $string = $platform->version |
468 |
|
469 |
Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result. |
470 |
|
471 |
=item $string = $platform->name |
472 |
|
473 |
Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result. |
474 |
|
475 |
=item $string = $platform->vendor |
476 |
|
477 |
Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result. |
478 |
|
479 |
=item $string = $platform->extensions |
480 |
|
481 |
Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result. |
482 |
|
483 |
=for gengetinfo end platform |
484 |
|
485 |
=back |
486 |
|
487 |
=head2 THE OpenCL::Device CLASS |
488 |
|
489 |
=over 4 |
490 |
|
491 |
=item $packed_value = $device->info ($name) |
492 |
|
493 |
See C<< $platform->info >> for details. |
494 |
|
495 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html> |
496 |
|
497 |
=for gengetinfo begin device |
498 |
|
499 |
=item $device_type = $device->type |
500 |
|
501 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_TYPE> and returns the result. |
502 |
|
503 |
=item $uint = $device->vendor_id |
504 |
|
505 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR_ID> and returns the result. |
506 |
|
507 |
=item $uint = $device->max_compute_units |
508 |
|
509 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_COMPUTE_UNITS> and returns the result. |
510 |
|
511 |
=item $uint = $device->max_work_item_dimensions |
512 |
|
513 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result. |
514 |
|
515 |
=item $int = $device->max_work_group_size |
516 |
|
517 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_GROUP_SIZE> and returns the result. |
518 |
|
519 |
=item @ints = $device->max_work_item_sizes |
520 |
|
521 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WORK_ITEM_SIZES> and returns the result. |
522 |
|
523 |
=item $uint = $device->preferred_vector_width_char |
524 |
|
525 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result. |
526 |
|
527 |
=item $uint = $device->preferred_vector_width_short |
528 |
|
529 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result. |
530 |
|
531 |
=item $uint = $device->preferred_vector_width_int |
532 |
|
533 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result. |
534 |
|
535 |
=item $uint = $device->preferred_vector_width_long |
536 |
|
537 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result. |
538 |
|
539 |
=item $uint = $device->preferred_vector_width_float |
540 |
|
541 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result. |
542 |
|
543 |
=item $uint = $device->preferred_vector_width_double |
544 |
|
545 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result. |
546 |
|
547 |
=item $uint = $device->max_clock_frequency |
548 |
|
549 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CLOCK_FREQUENCY> and returns the result. |
550 |
|
551 |
=item $bitfield = $device->address_bits |
552 |
|
553 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_ADDRESS_BITS> and returns the result. |
554 |
|
555 |
=item $uint = $device->max_read_image_args |
556 |
|
557 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_READ_IMAGE_ARGS> and returns the result. |
558 |
|
559 |
=item $uint = $device->max_write_image_args |
560 |
|
561 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result. |
562 |
|
563 |
=item $ulong = $device->max_mem_alloc_size |
564 |
|
565 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result. |
566 |
|
567 |
=item $int = $device->image2d_max_width |
568 |
|
569 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_WIDTH> and returns the result. |
570 |
|
571 |
=item $int = $device->image2d_max_height |
572 |
|
573 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result. |
574 |
|
575 |
=item $int = $device->image3d_max_width |
576 |
|
577 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_WIDTH> and returns the result. |
578 |
|
579 |
=item $int = $device->image3d_max_height |
580 |
|
581 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result. |
582 |
|
583 |
=item $int = $device->image3d_max_depth |
584 |
|
585 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE3D_MAX_DEPTH> and returns the result. |
586 |
|
587 |
=item $uint = $device->image_support |
588 |
|
589 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_IMAGE_SUPPORT> and returns the result. |
590 |
|
591 |
=item $int = $device->max_parameter_size |
592 |
|
593 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_PARAMETER_SIZE> and returns the result. |
594 |
|
595 |
=item $uint = $device->max_samplers |
596 |
|
597 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_SAMPLERS> and returns the result. |
598 |
|
599 |
=item $uint = $device->mem_base_addr_align |
600 |
|
601 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result. |
602 |
|
603 |
=item $uint = $device->min_data_type_align_size |
604 |
|
605 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result. |
606 |
|
607 |
=item $device_fp_config = $device->single_fp_config |
608 |
|
609 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_SINGLE_FP_CONFIG> and returns the result. |
610 |
|
611 |
=item $device_mem_cache_type = $device->global_mem_cache_type |
612 |
|
613 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result. |
614 |
|
615 |
=item $uint = $device->global_mem_cacheline_size |
616 |
|
617 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result. |
618 |
|
619 |
=item $ulong = $device->global_mem_cache_size |
620 |
|
621 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result. |
622 |
|
623 |
=item $ulong = $device->global_mem_size |
624 |
|
625 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_GLOBAL_MEM_SIZE> and returns the result. |
626 |
|
627 |
=item $ulong = $device->max_constant_buffer_size |
628 |
|
629 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result. |
630 |
|
631 |
=item $uint = $device->max_constant_args |
632 |
|
633 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_MAX_CONSTANT_ARGS> and returns the result. |
634 |
|
635 |
=item $device_local_mem_type = $device->local_mem_type |
636 |
|
637 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_TYPE> and returns the result. |
638 |
|
639 |
=item $ulong = $device->local_mem_size |
640 |
|
641 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_LOCAL_MEM_SIZE> and returns the result. |
642 |
|
643 |
=item $boolean = $device->error_correction_support |
644 |
|
645 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result. |
646 |
|
647 |
=item $int = $device->profiling_timer_resolution |
648 |
|
649 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result. |
650 |
|
651 |
=item $boolean = $device->endian_little |
652 |
|
653 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_ENDIAN_LITTLE> and returns the result. |
654 |
|
655 |
=item $boolean = $device->available |
656 |
|
657 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_AVAILABLE> and returns the result. |
658 |
|
659 |
=item $boolean = $device->compiler_available |
660 |
|
661 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_COMPILER_AVAILABLE> and returns the result. |
662 |
|
663 |
=item $device_exec_capabilities = $device->execution_capabilities |
664 |
|
665 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXECUTION_CAPABILITIES> and returns the result. |
666 |
|
667 |
=item $command_queue_properties = $device->properties |
668 |
|
669 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_QUEUE_PROPERTIES> and returns the result. |
670 |
|
671 |
=item $ = $device->platform |
672 |
|
673 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PLATFORM> and returns the result. |
674 |
|
675 |
=item $string = $device->name |
676 |
|
677 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NAME> and returns the result. |
678 |
|
679 |
=item $string = $device->vendor |
680 |
|
681 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_VENDOR> and returns the result. |
682 |
|
683 |
=item $string = $device->driver_version |
684 |
|
685 |
Calls C<clGetDeviceInfo> with C<CL_DRIVER_VERSION> and returns the result. |
686 |
|
687 |
=item $string = $device->profile |
688 |
|
689 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PROFILE> and returns the result. |
690 |
|
691 |
=item $string = $device->version |
692 |
|
693 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_VERSION> and returns the result. |
694 |
|
695 |
=item $string = $device->extensions |
696 |
|
697 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_EXTENSIONS> and returns the result. |
698 |
|
699 |
=item $uint = $device->preferred_vector_width_half |
700 |
|
701 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result. |
702 |
|
703 |
=item $uint = $device->native_vector_width_char |
704 |
|
705 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result. |
706 |
|
707 |
=item $uint = $device->native_vector_width_short |
708 |
|
709 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result. |
710 |
|
711 |
=item $uint = $device->native_vector_width_int |
712 |
|
713 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result. |
714 |
|
715 |
=item $uint = $device->native_vector_width_long |
716 |
|
717 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result. |
718 |
|
719 |
=item $uint = $device->native_vector_width_float |
720 |
|
721 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result. |
722 |
|
723 |
=item $uint = $device->native_vector_width_double |
724 |
|
725 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result. |
726 |
|
727 |
=item $uint = $device->native_vector_width_half |
728 |
|
729 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result. |
730 |
|
731 |
=item $device_fp_config = $device->double_fp_config |
732 |
|
733 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_DOUBLE_FP_CONFIG> and returns the result. |
734 |
|
735 |
=item $device_fp_config = $device->half_fp_config |
736 |
|
737 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_HALF_FP_CONFIG> and returns the result. |
738 |
|
739 |
=item $boolean = $device->host_unified_memory |
740 |
|
741 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_HOST_UNIFIED_MEMORY> and returns the result. |
742 |
|
743 |
=item $device = $device->parent_device_ext |
744 |
|
745 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARENT_DEVICE_EXT> and returns the result. |
746 |
|
747 |
=item @device_partition_property_exts = $device->partition_types_ext |
748 |
|
749 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_TYPES_EXT> and returns the result. |
750 |
|
751 |
=item @device_partition_property_exts = $device->affinity_domains_ext |
752 |
|
753 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_AFFINITY_DOMAINS_EXT> and returns the result. |
754 |
|
755 |
=item $uint = $device->reference_count_ext |
756 |
|
757 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_REFERENCE_COUNT_EXT > and returns the result. |
758 |
|
759 |
=item @device_partition_property_exts = $device->partition_style_ext |
760 |
|
761 |
Calls C<clGetDeviceInfo> with C<CL_DEVICE_PARTITION_STYLE_EXT> and returns the result. |
762 |
|
763 |
=for gengetinfo end device |
764 |
|
765 |
=back |
766 |
|
767 |
=head2 THE OpenCL::Context CLASS |
768 |
|
769 |
=over 4 |
770 |
|
771 |
=item $queue = $ctx->queue ($device, $properties) |
772 |
|
773 |
Create a new OpenCL::Queue object from the context and the given device. |
774 |
|
775 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html> |
776 |
|
777 |
Example: create an out-of-order queue. |
778 |
|
779 |
$queue = $ctx->queue ($device, OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE); |
780 |
|
781 |
=item $ev = $ctx->user_event |
782 |
|
783 |
Creates a new OpenCL::UserEvent object. |
784 |
|
785 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateUserEvent.html> |
786 |
|
787 |
=item $buf = $ctx->buffer ($flags, $len) |
788 |
|
789 |
Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the |
790 |
given flags and octet-size. |
791 |
|
792 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html> |
793 |
|
794 |
=item $buf = $ctx->buffer_sv ($flags, $data) |
795 |
|
796 |
Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and |
797 |
initialise it with the given data values. |
798 |
|
799 |
=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef) |
800 |
|
801 |
Creates a new OpenCL::Image2D object and optionally initialises it with |
802 |
the given data values. |
803 |
|
804 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html> |
805 |
|
806 |
=item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $row_pitch = 0, $slice_pitch = 0, $data = undef) |
807 |
|
808 |
Creates a new OpenCL::Image3D object and optionally initialises it with |
809 |
the given data values. |
810 |
|
811 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
812 |
|
813 |
=item $buffer = $ctx->gl_buffer ($flags, $bufobj) |
814 |
|
815 |
Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given |
816 |
OpenGL buffer object. |
817 |
|
818 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html |
819 |
|
820 |
=item $ctx->gl_texture2d ($flags, $target, $miplevel, $texture) |
821 |
|
822 |
Creates a new OpenCL::Image2D object that refers to the given OpenGL |
823 |
2D texture object. |
824 |
|
825 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture2D.html |
826 |
|
827 |
=item $ctx->gl_texture3d ($flags, $target, $miplevel, $texture) |
828 |
|
829 |
Creates a new OpenCL::Image3D object that refers to the given OpenGL |
830 |
3D texture object. |
831 |
|
832 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture3D.html |
833 |
|
834 |
=item $ctx->gl_renderbuffer ($flags, $renderbuffer) |
835 |
|
836 |
Creates a new OpenCL::Image2D object that refers to the given OpenGL |
837 |
render buffer. |
838 |
|
839 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLRenderbuffer.html |
840 |
|
841 |
=item @formats = $ctx->supported_image_formats ($flags, $image_type) |
842 |
|
843 |
Returns a list of matching image formats - each format is an arrayref with |
844 |
two values, $channel_order and $channel_type, in it. |
845 |
|
846 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSupportedImageFormats.html> |
847 |
|
848 |
=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode) |
849 |
|
850 |
Creates a new OpenCL::Sampler object. |
851 |
|
852 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html> |
853 |
|
854 |
=item $program = $ctx->program_with_source ($string) |
855 |
|
856 |
Creates a new OpenCL::Program object from the given source code. |
857 |
|
858 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html> |
859 |
|
860 |
=item $packed_value = $ctx->info ($name) |
861 |
|
862 |
See C<< $platform->info >> for details. |
863 |
|
864 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html> |
865 |
|
866 |
=for gengetinfo begin context |
867 |
|
868 |
=item $uint = $context->reference_count |
869 |
|
870 |
Calls C<clGetContextInfo> with C<CL_CONTEXT_REFERENCE_COUNT> and returns the result. |
871 |
|
872 |
=item @devices = $context->devices |
873 |
|
874 |
Calls C<clGetContextInfo> with C<CL_CONTEXT_DEVICES> and returns the result. |
875 |
|
876 |
=item @property_ints = $context->properties |
877 |
|
878 |
Calls C<clGetContextInfo> with C<CL_CONTEXT_PROPERTIES> and returns the result. |
879 |
|
880 |
=item $uint = $context->num_devices |
881 |
|
882 |
Calls C<clGetContextInfo> with C<CL_CONTEXT_NUM_DEVICES> and returns the result. |
883 |
|
884 |
=for gengetinfo end context |
885 |
|
886 |
=back |
887 |
|
888 |
=head2 THE OpenCL::Queue CLASS |
889 |
|
890 |
An OpenCL::Queue represents an execution queue for OpenCL. You execute |
891 |
requests by calling their respective C<enqueue_xxx> method and waitinf for |
892 |
it to complete in some way. |
893 |
|
894 |
All the enqueue methods return an event object that can be used to wait |
895 |
for completion, unless the method is called in void context, in which case |
896 |
no event object is created. |
897 |
|
898 |
They also allow you to specify any number of other event objects that this |
899 |
request has to wait for before it starts executing, by simply passing the |
900 |
event objects as extra parameters to the enqueue methods. To simplify |
901 |
program design, this module ignores any C<undef> values in the list of |
902 |
events. This makes it possible to code operations such as this, without |
903 |
having to put a valid event object into C<$event> first: |
904 |
|
905 |
$event = $queue->enqueue_xxx (..., $event); |
906 |
|
907 |
Queues execute in-order by default, without any parallelism, so in most |
908 |
cases (i.e. you use only one queue) it's not necessary to wait for or |
909 |
create event objects, althoguh an our of order queue is often a bit |
910 |
faster. |
911 |
|
912 |
=over 4 |
913 |
|
914 |
=item $ev = $queue->enqueue_read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...) |
915 |
|
916 |
Reads data from buffer into the given string. |
917 |
|
918 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html> |
919 |
|
920 |
=item $ev = $queue->enqueue_write_buffer ($buffer, $blocking, $offset, $data, $wait_events...) |
921 |
|
922 |
Writes data to buffer from the given string. |
923 |
|
924 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html> |
925 |
|
926 |
=item $ev = $queue->enqueue_copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...) |
927 |
|
928 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html> |
929 |
|
930 |
=item $ev = $queue->enqueue_read_buffer_rect (OpenCL::Memory buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...) |
931 |
|
932 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html |
933 |
|
934 |
=item $ev = $queue->enqueue_write_buffer_rect (OpenCL::Memory buf, cl_bool blocking, $buf_x, $buf_y, $buf_z, $host_x, $host_y, $host_z, $width, $height, $depth, $buf_row_pitch, $buf_slice_pitch, $host_row_pitch, $host_slice_pitch, $data, $wait_events...) |
935 |
|
936 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html |
937 |
|
938 |
=item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
939 |
|
940 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html> |
941 |
|
942 |
=item $ev = $queue->enqueue_copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...) |
943 |
|
944 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html> |
945 |
|
946 |
=item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
947 |
|
948 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html> |
949 |
|
950 |
=item $ev = $queue->enqueue_copy_image ($src_image, $dst_image, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...) |
951 |
|
952 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html> |
953 |
|
954 |
=item $ev = $queue->enqueue_copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...) |
955 |
|
956 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html> |
957 |
|
958 |
=item $ev = $queue->enqueue_copy_buffer_rect ($src, $dst, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $src_row_pitch, $src_slice_pitch, $dst_row_pitch, $dst_slice_pitch, $wait_event...) |
959 |
|
960 |
Yeah. |
961 |
|
962 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>. |
963 |
|
964 |
=item $ev = $queue->enqueue_task ($kernel, $wait_events...) |
965 |
|
966 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html> |
967 |
|
968 |
=item $ev = $queue->enqueue_nd_range_kernel ($kernel, @$global_work_offset, @$global_work_size, @$local_work_size, $wait_events...) |
969 |
|
970 |
Enqueues a kernel execution. |
971 |
|
972 |
@$global_work_size must be specified as a reference to an array of |
973 |
integers specifying the work sizes (element counts). |
974 |
|
975 |
@$global_work_offset must be either C<undef> (in which case all offsets |
976 |
are C<0>), or a reference to an array of work offsets, with the same number |
977 |
of elements as @$global_work_size. |
978 |
|
979 |
@$local_work_size must be either C<undef> (in which case the |
980 |
implementation is supposed to choose good local work sizes), or a |
981 |
reference to an array of local work sizes, with the same number of |
982 |
elements as @$global_work_size. |
983 |
|
984 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html> |
985 |
|
986 |
=item $ev = $queue->enqueue_acquire_gl_objects ([object, ...], $wait_events...) |
987 |
|
988 |
Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired |
989 |
for subsequent OpenCL usage. |
990 |
|
991 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html> |
992 |
|
993 |
=item $ev = $queue->enqueue_release_gl_objects ([object, ...], $wait_events...) |
994 |
|
995 |
Enqueues a list (an array-ref of OpenCL::Memory objects) to be released |
996 |
for subsequent OpenGL usage. |
997 |
|
998 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html> |
999 |
|
1000 |
=item $ev = $queue->enqueue_wait_for_events ($wait_events...) |
1001 |
|
1002 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html> |
1003 |
|
1004 |
=item $ev = $queue->enqueue_marker ($wait_events...) |
1005 |
|
1006 |
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html> |
1007 |
|
1008 |
=item $ev = $queue->enqueue_barrier ($wait_events...) |
1009 |
|
1010 |
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html> |
1011 |
|
1012 |
=item $queue->flush |
1013 |
|
1014 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html> |
1015 |
|
1016 |
=item $queue->finish |
1017 |
|
1018 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFinish.html> |
1019 |
|
1020 |
=item $packed_value = $queue->info ($name) |
1021 |
|
1022 |
See C<< $platform->info >> for details. |
1023 |
|
1024 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetCommandQueueInfo.html> |
1025 |
|
1026 |
=for gengetinfo begin command_queue |
1027 |
|
1028 |
=item $ctx = $command_queue->context |
1029 |
|
1030 |
Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_CONTEXT> and returns the result. |
1031 |
|
1032 |
=item $device = $command_queue->device |
1033 |
|
1034 |
Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_DEVICE> and returns the result. |
1035 |
|
1036 |
=item $uint = $command_queue->reference_count |
1037 |
|
1038 |
Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_REFERENCE_COUNT> and returns the result. |
1039 |
|
1040 |
=item $command_queue_properties = $command_queue->properties |
1041 |
|
1042 |
Calls C<clGetCommandQueueInfo> with C<CL_QUEUE_PROPERTIES> and returns the result. |
1043 |
|
1044 |
=for gengetinfo end command_queue |
1045 |
|
1046 |
=back |
1047 |
|
1048 |
=head2 THE OpenCL::Memory CLASS |
1049 |
|
1050 |
This the superclass of all memory objects - OpenCL::Buffer, OpenCL::Image, |
1051 |
OpenCL::Image2D and OpenCL::Image3D. |
1052 |
|
1053 |
=over 4 |
1054 |
|
1055 |
=item $packed_value = $memory->info ($name) |
1056 |
|
1057 |
See C<< $platform->info >> for details. |
1058 |
|
1059 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html> |
1060 |
|
1061 |
=for gengetinfo begin mem |
1062 |
|
1063 |
=item $mem_object_type = $mem->type |
1064 |
|
1065 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_TYPE> and returns the result. |
1066 |
|
1067 |
=item $mem_flags = $mem->flags |
1068 |
|
1069 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_FLAGS> and returns the result. |
1070 |
|
1071 |
=item $int = $mem->size |
1072 |
|
1073 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_SIZE> and returns the result. |
1074 |
|
1075 |
=item $ptr_value = $mem->host_ptr |
1076 |
|
1077 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_HOST_PTR> and returns the result. |
1078 |
|
1079 |
=item $uint = $mem->map_count |
1080 |
|
1081 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_MAP_COUNT> and returns the result. |
1082 |
|
1083 |
=item $uint = $mem->reference_count |
1084 |
|
1085 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_REFERENCE_COUNT> and returns the result. |
1086 |
|
1087 |
=item $ctx = $mem->context |
1088 |
|
1089 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_CONTEXT> and returns the result. |
1090 |
|
1091 |
=item $mem = $mem->associated_memobject |
1092 |
|
1093 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_ASSOCIATED_MEMOBJECT> and returns the result. |
1094 |
|
1095 |
=item $int = $mem->offset |
1096 |
|
1097 |
Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result. |
1098 |
|
1099 |
=for gengetinfo end mem |
1100 |
|
1101 |
=item ($type, $name) = $mem->gl_object_info |
1102 |
|
1103 |
Returns the OpenGL object type (e.g. OpenCL::GL_OBJECT_TEXTURE2D) and the |
1104 |
object "name" (e.g. the texture name) used to create this memory object. |
1105 |
|
1106 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetGLObjectInfo.html> |
1107 |
|
1108 |
=back |
1109 |
|
1110 |
=head2 THE OpenCL::Buffer CLASS |
1111 |
|
1112 |
This is a subclass of OpenCL::Memory, and the superclass of |
1113 |
OpenCL::BufferObj. Its purpose is simply to distinguish between buffers |
1114 |
and sub-buffers. |
1115 |
|
1116 |
=head2 THE OpenCL::BufferObj CLASS |
1117 |
|
1118 |
This is a subclass of OpenCL::Buffer and thus OpenCL::Memory. It exists |
1119 |
because one cna create sub buffers of OpenLC::BufferObj objects, but not |
1120 |
sub buffers from these sub buffers. |
1121 |
|
1122 |
=over 4 |
1123 |
|
1124 |
=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size) |
1125 |
|
1126 |
Creates an OpenCL::Buffer objects from this buffer and returns it. The |
1127 |
C<buffer_create_type> is assumed to be C<CL_BUFFER_CREATE_TYPE_REGION>. |
1128 |
|
1129 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html> |
1130 |
|
1131 |
=back |
1132 |
|
1133 |
=head2 THE OpenCL::Image CLASS |
1134 |
|
1135 |
This is the superclass of all image objects - OpenCL::Image2D and OpenCL::Image3D. |
1136 |
|
1137 |
=over 4 |
1138 |
|
1139 |
=item $packed_value = $ev->image_info ($name) |
1140 |
|
1141 |
See C<< $platform->info >> for details. |
1142 |
|
1143 |
The reason this method is not called C<info> is that there already is an |
1144 |
C<< ->info >> method inherited from C<OpenCL::Memory>. |
1145 |
|
1146 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html> |
1147 |
|
1148 |
=for gengetinfo begin image |
1149 |
|
1150 |
=item $int = $image->element_size |
1151 |
|
1152 |
Calls C<clGetImageInfo> with C<CL_IMAGE_ELEMENT_SIZE> and returns the result. |
1153 |
|
1154 |
=item $int = $image->row_pitch |
1155 |
|
1156 |
Calls C<clGetImageInfo> with C<CL_IMAGE_ROW_PITCH> and returns the result. |
1157 |
|
1158 |
=item $int = $image->slice_pitch |
1159 |
|
1160 |
Calls C<clGetImageInfo> with C<CL_IMAGE_SLICE_PITCH> and returns the result. |
1161 |
|
1162 |
=item $int = $image->width |
1163 |
|
1164 |
Calls C<clGetImageInfo> with C<CL_IMAGE_WIDTH> and returns the result. |
1165 |
|
1166 |
=item $int = $image->height |
1167 |
|
1168 |
Calls C<clGetImageInfo> with C<CL_IMAGE_HEIGHT> and returns the result. |
1169 |
|
1170 |
=item $int = $image->depth |
1171 |
|
1172 |
Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result. |
1173 |
|
1174 |
=for gengetinfo end image |
1175 |
|
1176 |
=for gengetinfo begin gl_texture |
1177 |
|
1178 |
=item $GLenum = $gl_texture->target |
1179 |
|
1180 |
Calls C<clGetGLTextureInfo> with C<CL_GL_TEXTURE_TARGET> and returns the result. |
1181 |
|
1182 |
=item $GLint = $gl_texture->gl_mipmap_level |
1183 |
|
1184 |
Calls C<clGetGLTextureInfo> with C<CL_GL_MIPMAP_LEVEL> and returns the result. |
1185 |
|
1186 |
=for gengetinfo end gl_texture |
1187 |
|
1188 |
=back |
1189 |
|
1190 |
=head2 THE OpenCL::Sampler CLASS |
1191 |
|
1192 |
=over 4 |
1193 |
|
1194 |
=item $packed_value = $sampler->info ($name) |
1195 |
|
1196 |
See C<< $platform->info >> for details. |
1197 |
|
1198 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html> |
1199 |
|
1200 |
=for gengetinfo begin sampler |
1201 |
|
1202 |
=item $uint = $sampler->reference_count |
1203 |
|
1204 |
Calls C<clGetSamplerInfo> with C<CL_SAMPLER_REFERENCE_COUNT> and returns the result. |
1205 |
|
1206 |
=item $ctx = $sampler->context |
1207 |
|
1208 |
Calls C<clGetSamplerInfo> with C<CL_SAMPLER_CONTEXT> and returns the result. |
1209 |
|
1210 |
=item $addressing_mode = $sampler->normalized_coords |
1211 |
|
1212 |
Calls C<clGetSamplerInfo> with C<CL_SAMPLER_NORMALIZED_COORDS> and returns the result. |
1213 |
|
1214 |
=item $filter_mode = $sampler->addressing_mode |
1215 |
|
1216 |
Calls C<clGetSamplerInfo> with C<CL_SAMPLER_ADDRESSING_MODE> and returns the result. |
1217 |
|
1218 |
=item $boolean = $sampler->filter_mode |
1219 |
|
1220 |
Calls C<clGetSamplerInfo> with C<CL_SAMPLER_FILTER_MODE> and returns the result. |
1221 |
|
1222 |
=for gengetinfo end sampler |
1223 |
|
1224 |
=back |
1225 |
|
1226 |
=head2 THE OpenCL::Program CLASS |
1227 |
|
1228 |
=over 4 |
1229 |
|
1230 |
=item $program->build ($device, $options = "") |
1231 |
|
1232 |
Tries to build the program with the givne options. |
1233 |
|
1234 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html> |
1235 |
|
1236 |
=item $packed_value = $program->build_info ($device, $name) |
1237 |
|
1238 |
Similar to C<< $platform->info >>, but returns build info for a previous |
1239 |
build attempt for the given device. |
1240 |
|
1241 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html> |
1242 |
|
1243 |
=item $kernel = $program->kernel ($function_name) |
1244 |
|
1245 |
Creates an OpenCL::Kernel object out of the named C<__kernel> function in |
1246 |
the program. |
1247 |
|
1248 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html> |
1249 |
|
1250 |
=for gengetinfo begin program_build |
1251 |
|
1252 |
=item $build_status = $program->build_status ($device) |
1253 |
|
1254 |
Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_STATUS> and returns the result. |
1255 |
|
1256 |
=item $string = $program->build_options ($device) |
1257 |
|
1258 |
Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_OPTIONS> and returns the result. |
1259 |
|
1260 |
=item $string = $program->build_log ($device) |
1261 |
|
1262 |
Calls C<clGetProgramBuildInfo> with C<CL_PROGRAM_BUILD_LOG> and returns the result. |
1263 |
|
1264 |
=for gengetinfo end program_build |
1265 |
|
1266 |
=item $packed_value = $program->info ($name) |
1267 |
|
1268 |
See C<< $platform->info >> for details. |
1269 |
|
1270 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html> |
1271 |
|
1272 |
=for gengetinfo begin program |
1273 |
|
1274 |
=item $uint = $program->reference_count |
1275 |
|
1276 |
Calls C<clGetProgramInfo> with C<CL_PROGRAM_REFERENCE_COUNT> and returns the result. |
1277 |
|
1278 |
=item $ctx = $program->context |
1279 |
|
1280 |
Calls C<clGetProgramInfo> with C<CL_PROGRAM_CONTEXT> and returns the result. |
1281 |
|
1282 |
=item $uint = $program->num_devices |
1283 |
|
1284 |
Calls C<clGetProgramInfo> with C<CL_PROGRAM_NUM_DEVICES> and returns the result. |
1285 |
|
1286 |
=item @devices = $program->devices |
1287 |
|
1288 |
Calls C<clGetProgramInfo> with C<CL_PROGRAM_DEVICES> and returns the result. |
1289 |
|
1290 |
=item $string = $program->source |
1291 |
|
1292 |
Calls C<clGetProgramInfo> with C<CL_PROGRAM_SOURCE> and returns the result. |
1293 |
|
1294 |
=item @ints = $program->binary_sizes |
1295 |
|
1296 |
Calls C<clGetProgramInfo> with C<CL_PROGRAM_BINARY_SIZES> and returns the result. |
1297 |
|
1298 |
=for gengetinfo end program |
1299 |
|
1300 |
=item @blobs = $program->binaries |
1301 |
|
1302 |
Returns a string for the compiled binary for every device associated with |
1303 |
the program, empty strings indicate missing programs, and an empty result |
1304 |
means no program binaries are available. |
1305 |
|
1306 |
These "binaries" are often, in fact, informative low-level assembly |
1307 |
sources. |
1308 |
|
1309 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html> |
1310 |
|
1311 |
=back |
1312 |
|
1313 |
=head2 THE OpenCL::Kernel CLASS |
1314 |
|
1315 |
=over 4 |
1316 |
|
1317 |
=item $packed_value = $kernel->info ($name) |
1318 |
|
1319 |
See C<< $platform->info >> for details. |
1320 |
|
1321 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html> |
1322 |
|
1323 |
=for gengetinfo begin kernel |
1324 |
|
1325 |
=item $string = $kernel->function_name |
1326 |
|
1327 |
Calls C<clGetKernelInfo> with C<CL_KERNEL_FUNCTION_NAME> and returns the result. |
1328 |
|
1329 |
=item $uint = $kernel->num_args |
1330 |
|
1331 |
Calls C<clGetKernelInfo> with C<CL_KERNEL_NUM_ARGS> and returns the result. |
1332 |
|
1333 |
=item $uint = $kernel->reference_count |
1334 |
|
1335 |
Calls C<clGetKernelInfo> with C<CL_KERNEL_REFERENCE_COUNT> and returns the result. |
1336 |
|
1337 |
=item $ctx = $kernel->context |
1338 |
|
1339 |
Calls C<clGetKernelInfo> with C<CL_KERNEL_CONTEXT> and returns the result. |
1340 |
|
1341 |
=item $program = $kernel->program |
1342 |
|
1343 |
Calls C<clGetKernelInfo> with C<CL_KERNEL_PROGRAM> and returns the result. |
1344 |
|
1345 |
=for gengetinfo end kernel |
1346 |
|
1347 |
=item $packed_value = $kernel->work_group_info ($device, $name) |
1348 |
|
1349 |
See C<< $platform->info >> for details. |
1350 |
|
1351 |
The reason this method is not called C<info> is that there already is an |
1352 |
C<< ->info >> method. |
1353 |
|
1354 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html> |
1355 |
|
1356 |
=for gengetinfo begin kernel_work_group |
1357 |
|
1358 |
=item $int = $kernel->work_group_size ($device) |
1359 |
|
1360 |
Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_WORK_GROUP_SIZE> and returns the result. |
1361 |
|
1362 |
=item @ints = $kernel->compile_work_group_size ($device) |
1363 |
|
1364 |
Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result. |
1365 |
|
1366 |
=item $ulong = $kernel->local_mem_size ($device) |
1367 |
|
1368 |
Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_LOCAL_MEM_SIZE> and returns the result. |
1369 |
|
1370 |
=item $int = $kernel->preferred_work_group_size_multiple ($device) |
1371 |
|
1372 |
Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result. |
1373 |
|
1374 |
=item $ulong = $kernel->private_mem_size ($device) |
1375 |
|
1376 |
Calls C<clGetKernelWorkGroupInfo> with C<CL_KERNEL_PRIVATE_MEM_SIZE> and returns the result. |
1377 |
|
1378 |
=for gengetinfo end kernel_work_group |
1379 |
|
1380 |
=item $kernel->set_TYPE ($index, $value) |
1381 |
|
1382 |
This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>. |
1383 |
|
1384 |
TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>, |
1385 |
C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>, |
1386 |
C<image2d>, C<image3d>, C<sampler>, C<local> or C<event>. |
1387 |
|
1388 |
Chars and integers (including the half type) are specified as integers, |
1389 |
float and double as floating point values, memory/buffer/image2d/image3d |
1390 |
must be an object of that type or C<undef>, local-memory arguments are |
1391 |
set by specifying the size, and sampler and event must be objects of that |
1392 |
type. |
1393 |
|
1394 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html> |
1395 |
|
1396 |
=back |
1397 |
|
1398 |
=head2 THE OpenCL::Event CLASS |
1399 |
|
1400 |
This is the superclass for all event objects (including OpenCL::UserEvent |
1401 |
objects). |
1402 |
|
1403 |
=over 4 |
1404 |
|
1405 |
=item $ev->wait |
1406 |
|
1407 |
Waits for the event to complete. |
1408 |
|
1409 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
1410 |
|
1411 |
=item $packed_value = $ev->info ($name) |
1412 |
|
1413 |
See C<< $platform->info >> for details. |
1414 |
|
1415 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html> |
1416 |
|
1417 |
=for gengetinfo begin event |
1418 |
|
1419 |
=item $queue = $event->command_queue |
1420 |
|
1421 |
Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_QUEUE> and returns the result. |
1422 |
|
1423 |
=item $command_type = $event->command_type |
1424 |
|
1425 |
Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_TYPE> and returns the result. |
1426 |
|
1427 |
=item $uint = $event->reference_count |
1428 |
|
1429 |
Calls C<clGetEventInfo> with C<CL_EVENT_REFERENCE_COUNT> and returns the result. |
1430 |
|
1431 |
=item $uint = $event->command_execution_status |
1432 |
|
1433 |
Calls C<clGetEventInfo> with C<CL_EVENT_COMMAND_EXECUTION_STATUS> and returns the result. |
1434 |
|
1435 |
=item $ctx = $event->context |
1436 |
|
1437 |
Calls C<clGetEventInfo> with C<CL_EVENT_CONTEXT> and returns the result. |
1438 |
|
1439 |
=for gengetinfo end event |
1440 |
|
1441 |
=item $packed_value = $ev->profiling_info ($name) |
1442 |
|
1443 |
See C<< $platform->info >> for details. |
1444 |
|
1445 |
The reason this method is not called C<info> is that there already is an |
1446 |
C<< ->info >> method. |
1447 |
|
1448 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProfilingInfo.html> |
1449 |
|
1450 |
=for gengetinfo begin profiling |
1451 |
|
1452 |
=item $ulong = $event->profiling_command_queued |
1453 |
|
1454 |
Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_QUEUED> and returns the result. |
1455 |
|
1456 |
=item $ulong = $event->profiling_command_submit |
1457 |
|
1458 |
Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_SUBMIT> and returns the result. |
1459 |
|
1460 |
=item $ulong = $event->profiling_command_start |
1461 |
|
1462 |
Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_START> and returns the result. |
1463 |
|
1464 |
=item $ulong = $event->profiling_command_end |
1465 |
|
1466 |
Calls C<clGetEventProfilingInfo> with C<CL_PROFILING_COMMAND_END> and returns the result. |
1467 |
|
1468 |
=for gengetinfo end profiling |
1469 |
|
1470 |
=back |
1471 |
|
1472 |
=head2 THE OpenCL::UserEvent CLASS |
1473 |
|
1474 |
This is a subclass of OpenCL::Event. |
1475 |
|
1476 |
=over 4 |
1477 |
|
1478 |
=item $ev->set_status ($execution_status) |
1479 |
|
1480 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html> |
1481 |
|
1482 |
=back |
1483 |
|
1484 |
=cut |
1485 |
|
1486 |
package OpenCL; |
1487 |
|
1488 |
use common::sense; |
1489 |
|
1490 |
BEGIN { |
1491 |
our $VERSION = '0.96'; |
1492 |
|
1493 |
require XSLoader; |
1494 |
XSLoader::load (__PACKAGE__, $VERSION); |
1495 |
|
1496 |
@OpenCL::Buffer::ISA = |
1497 |
@OpenCL::Image::ISA = OpenCL::Memory::; |
1498 |
|
1499 |
@OpenCL::BufferObj::ISA = OpenCL::Buffer::; |
1500 |
|
1501 |
@OpenCL::Image2D::ISA = |
1502 |
@OpenCL::Image3D::ISA = OpenCL::Image::; |
1503 |
|
1504 |
@OpenCL::UserEvent::ISA = OpenCL::Event::; |
1505 |
} |
1506 |
|
1507 |
1; |
1508 |
|
1509 |
=head1 AUTHOR |
1510 |
|
1511 |
Marc Lehmann <schmorp@schmorp.de> |
1512 |
http://home.schmorp.de/ |
1513 |
|
1514 |
=cut |
1515 |
|