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1.1 |
=head1 NAME |
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OpenCL - Open Computing Language Bindings |
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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 might be useful, but hasn't seen much testing. |
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1.1 |
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=head2 OpenCL FROM 10000 FEET HEIGHT |
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Here is a high level overview of OpenCL: |
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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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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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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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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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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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OpenCL::Sampler objects, which are kind of like texture filter modes in |
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OpenGL. |
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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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OpenCL::Event objects are used to signal when something is complete. |
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=head2 HELPFUL RESOURCES |
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1.3 |
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The OpenCL specs used to develop this module - download these and keept |
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hema round, they are required reference material: |
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http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf |
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http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf |
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http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.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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http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/ |
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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 confusing (also, the class hierarchy of this module |
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is much more fine-grained): |
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http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/classDiagram.html |
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1.18 |
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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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http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf |
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And here's NVIDIA's OpenCL Best Practises Guide: |
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http://developer.download.nvidia.com/compute/cuda/3_2/toolkit/docs/OpenCL_Best_Practices_Guide.pdf |
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1.9 |
=head1 BASIC WORKFLOW |
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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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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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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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Create kernel objects for all kernels you want to use (surprisingly, these |
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are not device-specific). |
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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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Create some input and output buffers from your context. Set these as |
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arguments to your kernel. |
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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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Enqueue the kernel execution. |
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Enqueue buffer reads for your output buffer to read results. |
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=head1 EXAMPLES |
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=head2 Enumerate all devices and get contexts for them. |
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1.1 |
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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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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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=head2 Get a useful context and a command queue. |
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1.1 |
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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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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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=head2 Print all supported image formats of a context. |
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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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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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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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=head2 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->read_buffer ($buf, 1, 1, 3, my $data); |
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print "$data\n"; |
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1.3 |
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my $ev = $queue->read_buffer ($buf, 0, 1, 3, my $data); |
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1.3 |
$ev->wait; |
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print "$data\n"; # prints "elm" |
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1.3 |
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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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my $src = ' |
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1.31 |
kernel void |
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squareit (global float *input, global float *output) |
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{ |
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$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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my $prog = $ctx->build_program ($src); |
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my $kernel = $prog->kernel ("squareit"); |
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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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my $input = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, pack "f*", 1, 2, 3, 4.5); |
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my $output = $ctx->buffer (0, OpenCL::SIZEOF_FLOAT * 5); |
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# set buffer |
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$kernel->set_buffer (0, $input); |
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$kernel->set_buffer (1, $output); |
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# execute it for all 4 numbers |
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$queue->nd_range_kernel ($kernel, undef, [4], undef); |
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# enqueue a synchronous read |
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$queue->read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data); |
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# print the results: |
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printf "%s\n", join ", ", unpack "f*", $data; |
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=head2 The same enqueue operations as before, but assuming an out-of-order queue, |
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showing off barriers. |
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# execute it for all 4 numbers |
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$queue->nd_range_kernel ($kernel, undef, [4], undef); |
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# enqueue a barrier to ensure in-order execution |
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$queue->barrier; |
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# enqueue an async read |
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$queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data); |
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# wait for all requests to finish |
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$queue->finish; |
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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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# execute it for all 4 numbers |
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my $ev = $queue->nd_range_kernel ($kernel, undef, [4], undef); |
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# enqueue an async read |
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$ev = $queue->read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev); |
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# wait for the last event to complete |
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$ev->wait; |
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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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1.71 |
set flight effect. |
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This is quite a long example to get you going - you can also download it |
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from L<http://cvs.schmorp.de/OpenCL/examples/juliaflight>. |
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use OpenGL ":all"; |
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use OpenCL; |
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my $S = $ARGV[0] || 256; # window/texture size, smaller is faster |
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# open a window and create a gl texture |
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OpenGL::glpOpenWindow width => $S, height => $S; |
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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, $S, $S, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0; |
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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 $ctx; |
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for (OpenCL::platforms) { |
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$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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$ctx |
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or die "cannot find suitable OpenCL device\n"; |
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my $queue = $ctx->queue ($dev); |
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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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# 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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int2 xy = (int2)(get_global_id (0), get_global_id (1)); |
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float2 p = convert_float2 (xy) / $S.f * 2.f - 1.f; |
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float2 m = (float2)(1.f, p.y) / fabs (p.x); // tunnel |
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m.x = fabs (fmod (m.x + time * 0.05f, 4.f) - 2.f); |
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float2 z = m; |
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float2 c = (float2)(sin (time * 0.01133f), cos (time * 0.02521f)); |
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for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i) // standard julia |
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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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float3 colour = (float3)(z.x, z.y, atan2 (z.y, z.x)); |
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write_imagef (img, xy, (float4)(colour * p.x * p.x, 1.)); |
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} |
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EOF |
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my $prog = $ctx->build_program ($src); |
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my $kernel = $prog->kernel ("juliatunnel"); |
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# program compiled, kernel ready, now draw and loop |
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for (my $time; ; ++$time) { |
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# acquire objects from opengl |
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$queue->acquire_gl_objects ([$tex]); |
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# configure and run our kernel |
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$kernel->setf ("mf", $tex, $time*2); # mf = memory object, float |
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$queue->nd_range_kernel ($kernel, undef, [$S, $S], undef); |
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# release objects to opengl again |
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$queue->release_gl_objects ([$tex]); |
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# wait |
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$queue->finish; |
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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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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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glXSwapBuffers; |
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select undef, undef, undef, 1/60; |
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} |
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1.66 |
=head2 How to modify the previous example to not rely on GL sharing. |
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1.65 |
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For those poor souls with only a sucky CPU OpenCL implementation, you |
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currently have to read the image into some perl scalar, and then modify a |
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texture or use glDrawPixels or so). |
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First, when you don't need gl sharing, you can create the context much simpler: |
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$ctx = $platform->context (undef, [$dev]) |
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To use a texture, you would modify the above example by creating an |
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OpenCL::Image manually instead of deriving it from a texture: |
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my $tex = $ctx->image2d (OpenCL::MEM_WRITE_ONLY, OpenCL::RGBA, OpenCL::UNORM_INT8, $S, $S); |
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|
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1.71 |
And in the draw loop, intead of acquire_gl_objects/release_gl_objects, you |
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1.65 |
would read the image2d after the kernel has written it: |
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$queue->read_image ($tex, 0, 0, 0, 0, $S, $S, 1, 0, 0, my $data); |
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And then you would upload the pixel data to the texture (or use glDrawPixels): |
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glTexSubImage2D_s GL_TEXTURE_2D, 0, 0, 0, $S, $S, GL_RGBA, GL_UNSIGNED_BYTE, $data; |
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The fully modified example can be found at |
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L<http://cvs.schmorp.de/OpenCL/examples/juliaflight-nosharing>. |
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1.71 |
=head2 Julia sets look soooo 80ies. |
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Then colour them differently, e.g. using orbit traps! Replace the loop and |
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|
colour calculation from the previous examples by this: |
342 |
|
|
|
343 |
|
|
float2 dm = (float2)(1.f, 1.f); |
344 |
|
|
|
345 |
|
|
for (int i = 0; i < 25; ++i) |
346 |
|
|
{ |
347 |
|
|
z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c; |
348 |
|
|
dm = fmin (dm, (float2)(fabs (dot (z, z) - 1.f), fabs (z.x - 1.f))); |
349 |
|
|
} |
350 |
|
|
|
351 |
|
|
float3 colour = (float3)(dm.x * dm.y, dm.x * dm.y, dm.x); |
352 |
|
|
|
353 |
|
|
Also try C<-10.f> instead of C<-1.f>. |
354 |
|
|
|
355 |
root |
1.5 |
=head1 DOCUMENTATION |
356 |
|
|
|
357 |
|
|
=head2 BASIC CONVENTIONS |
358 |
|
|
|
359 |
root |
1.14 |
This is not a one-to-one C-style translation of OpenCL to Perl - instead |
360 |
|
|
I attempted to make the interface as type-safe as possible by introducing |
361 |
root |
1.5 |
object syntax where it makes sense. There are a number of important |
362 |
|
|
differences between the OpenCL C API and this module: |
363 |
|
|
|
364 |
|
|
=over 4 |
365 |
|
|
|
366 |
|
|
=item * Object lifetime managament is automatic - there is no need |
367 |
|
|
to free objects explicitly (C<clReleaseXXX>), the release function |
368 |
|
|
is called automatically once all Perl references to it go away. |
369 |
|
|
|
370 |
root |
1.20 |
=item * OpenCL uses CamelCase for function names |
371 |
|
|
(e.g. C<clGetPlatformIDs>, C<clGetPlatformInfo>), while this module |
372 |
|
|
uses underscores as word separator and often leaves out prefixes |
373 |
|
|
(C<OpenCL::platforms>, C<< $platform->info >>). |
374 |
root |
1.5 |
|
375 |
|
|
=item * OpenCL often specifies fixed vector function arguments as short |
376 |
root |
1.19 |
arrays (C<size_t origin[3]>), while this module explicitly expects the |
377 |
|
|
components as separate arguments (C<$orig_x, $orig_y, $orig_z>) in |
378 |
|
|
function calls. |
379 |
root |
1.5 |
|
380 |
root |
1.19 |
=item * Structures are often specified by flattening out their components |
381 |
|
|
as with short vectors, and returned as arrayrefs. |
382 |
root |
1.5 |
|
383 |
|
|
=item * When enqueuing commands, the wait list is specified by adding |
384 |
root |
1.9 |
extra arguments to the function - anywhere a C<$wait_events...> argument |
385 |
root |
1.44 |
is documented this can be any number of event objects. As an extsnion |
386 |
|
|
implemented by this module, C<undef> values will be ignored in the event |
387 |
|
|
list. |
388 |
root |
1.5 |
|
389 |
|
|
=item * When enqueuing commands, if the enqueue method is called in void |
390 |
|
|
context, no event is created. In all other contexts an event is returned |
391 |
|
|
by the method. |
392 |
|
|
|
393 |
root |
1.79 |
=item * This module expects all functions to return C<OpenCL::SUCCESS>. If any |
394 |
root |
1.5 |
other status is returned the function will throw an exception, so you |
395 |
|
|
don't normally have to to any error checking. |
396 |
|
|
|
397 |
|
|
=back |
398 |
|
|
|
399 |
root |
1.80 |
=head2 CONSTANTS |
400 |
|
|
|
401 |
|
|
All C<CL_xxx> constants that this module supports are always available |
402 |
|
|
in the C<OpenCL> namespace as C<OpenCL::xxx> (i.e. without the C<CL_> |
403 |
root |
1.81 |
prefix). Constants which are not defined in the header files used during |
404 |
root |
1.80 |
compilation, or otherwise are not available, will have the value C<-1>. |
405 |
|
|
|
406 |
root |
1.81 |
The latest version of this module knows and exports the constants |
407 |
|
|
listed in L<http://cvs.schmorp.de/OpenCL/constiv.h>. |
408 |
|
|
|
409 |
root |
1.80 |
=head2 OPENCL 1.1 VS. OPENCL 1.2 |
410 |
|
|
|
411 |
|
|
This module supports both OpenCL version 1.1 and 1.2, although the OpenCL |
412 |
|
|
1.2 interface hasn't been tested much for lack of availability of an |
413 |
|
|
actual implementation. |
414 |
|
|
|
415 |
|
|
Every function or method in this manual page that interfaces to a |
416 |
|
|
particular OpenCL function has a link to the its C manual page. |
417 |
|
|
|
418 |
|
|
If the link contains a F<1.1>, then this function is an OpenCL 1.1 |
419 |
|
|
function. Most but not all also exist in OpenCL 1.2, and this module |
420 |
|
|
tries to emulate the missing ones for you, when told to do so at |
421 |
root |
1.81 |
compiletime. You can check whether a function was removed in OpenCL 1.2 by |
422 |
root |
1.80 |
replacing the F<1.1> component in the URL by F<1.2>. |
423 |
|
|
|
424 |
|
|
If the link contains a F<1.2>, then this is a OpenCL 1.2-only |
425 |
|
|
function. Even if the module was compiled with OpenCL 1.2 header files |
426 |
|
|
and has an 1.2 OpenCL library, calling such a function on a platform that |
427 |
|
|
doesn't implement 1.2 causes undefined behaviour, usually a crash (But |
428 |
|
|
this is not guaranteed). |
429 |
|
|
|
430 |
|
|
You can find out whether this module was compiled to prefer 1.1 |
431 |
|
|
functionality by ooking at C<OpenCL::PREFER_1_1> - if it is true, then |
432 |
|
|
1.1 functions generally are implemented using 1.1 OpenCL functions. If it |
433 |
|
|
is false, then 1.1 functions missing from 1.2 are emulated by calling 1.2 |
434 |
|
|
fucntions. |
435 |
|
|
|
436 |
|
|
This is a somewhat sorry state of affairs, but the Khronos group choose to |
437 |
|
|
make every release of OpenCL source and binary incompatible with previous |
438 |
|
|
releases. |
439 |
|
|
|
440 |
root |
1.7 |
=head2 PERL AND OPENCL TYPES |
441 |
|
|
|
442 |
root |
1.8 |
This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack |
443 |
root |
1.7 |
format equivalents: |
444 |
|
|
|
445 |
root |
1.8 |
OpenCL perl PDL pack/unpack |
446 |
|
|
char IV - c |
447 |
|
|
uchar IV byte C |
448 |
|
|
short IV short s |
449 |
|
|
ushort IV ushort S |
450 |
|
|
int IV long? l |
451 |
|
|
uint IV - L |
452 |
|
|
long IV longlong q |
453 |
|
|
ulong IV - Q |
454 |
|
|
float NV float f |
455 |
|
|
half IV ushort S |
456 |
|
|
double NV double d |
457 |
root |
1.7 |
|
458 |
root |
1.36 |
=head2 GLX SUPPORT |
459 |
|
|
|
460 |
|
|
Due to the sad state that OpenGL support is in in Perl (mostly the OpenGL |
461 |
|
|
module, which has little to no documentation and has little to no support |
462 |
root |
1.38 |
for glX), this module, as a special extension, treats context creation |
463 |
root |
1.36 |
properties C<OpenCL::GLX_DISPLAY_KHR> and C<OpenCL::GL_CONTEXT_KHR> |
464 |
|
|
specially: If either or both of these are C<undef>, then the OpenCL |
465 |
root |
1.38 |
module tries to dynamically resolve C<glXGetCurrentDisplay> and |
466 |
|
|
C<glXGetCurrentContext>, call these functions and use their return values |
467 |
root |
1.36 |
instead. |
468 |
|
|
|
469 |
|
|
For this to work, the OpenGL library must be loaded, a GLX context must |
470 |
|
|
have been created and be made current, and C<dlsym> must be available and |
471 |
|
|
capable of finding the function via C<RTLD_DEFAULT>. |
472 |
|
|
|
473 |
root |
1.55 |
=head2 EVENT SYSTEM |
474 |
|
|
|
475 |
|
|
OpenCL can generate a number of (potentially) asynchronous events, for |
476 |
|
|
example, after compiling a program, to signal a context-related error or, |
477 |
|
|
perhaps most important, to signal completion of queued jobs (by setting |
478 |
|
|
callbacks on OpenCL::Event objects). |
479 |
|
|
|
480 |
root |
1.74 |
The OpenCL module converts all these callbacks into events - you can |
481 |
|
|
still register callbacks, but they are not executed when your OpenCL |
482 |
|
|
implementation calls the actual callback, but only later. Therefore, none |
483 |
|
|
of the limitations of OpenCL callbacks apply to the perl implementation: |
484 |
|
|
it is perfectly safe to make blocking operations from event callbacks, and |
485 |
|
|
enqueued operations don't need to be flushed. |
486 |
|
|
|
487 |
root |
1.55 |
To facilitate this, this module maintains an event queue - each |
488 |
|
|
time an asynchronous event happens, it is queued, and perl will be |
489 |
|
|
interrupted. This is implemented via the L<Async::Interrupt> module. In |
490 |
|
|
addition, this module has L<AnyEvent> support, so it can seamlessly |
491 |
|
|
integrate itself into many event loops. |
492 |
|
|
|
493 |
root |
1.74 |
Since L<Async::Interrupt> is a bit hard to understand, here are some case examples: |
494 |
root |
1.55 |
|
495 |
|
|
=head3 Don't use callbacks. |
496 |
|
|
|
497 |
|
|
When your program never uses any callbacks, then there will never be any |
498 |
|
|
notifications you need to take care of, and therefore no need to worry |
499 |
|
|
about all this. |
500 |
|
|
|
501 |
|
|
You can achieve a great deal by explicitly waiting for events, or using |
502 |
|
|
barriers and flush calls. In many programs, there is no need at all to |
503 |
|
|
tinker with asynchronous events. |
504 |
|
|
|
505 |
|
|
=head3 Use AnyEvent |
506 |
|
|
|
507 |
|
|
This module automatically registers a watcher that invokes all outstanding |
508 |
|
|
event callbacks when AnyEvent is initialised (and block asynchronous |
509 |
|
|
interruptions). Using this mode of operations is the safest and most |
510 |
|
|
recommended one. |
511 |
|
|
|
512 |
|
|
To use this, simply use AnyEvent and this module normally, make sure you |
513 |
|
|
have an event loop running: |
514 |
|
|
|
515 |
|
|
use Gtk2 -init; |
516 |
|
|
use AnyEvent; |
517 |
|
|
|
518 |
|
|
# initialise AnyEvent, by creating a watcher, or: |
519 |
|
|
AnyEvent::detect; |
520 |
|
|
|
521 |
root |
1.59 |
my $e = $queue->marker; |
522 |
root |
1.55 |
$e->cb (sub { |
523 |
|
|
warn "opencl is finished\n"; |
524 |
|
|
}) |
525 |
|
|
|
526 |
|
|
main Gtk2; |
527 |
|
|
|
528 |
|
|
Note that this module will not initialise AnyEvent for you. Before |
529 |
|
|
AnyEvent is initialised, the module will asynchronously interrupt perl |
530 |
|
|
instead. To avoid any surprises, it's best to explicitly initialise |
531 |
|
|
AnyEvent. |
532 |
|
|
|
533 |
|
|
You can temporarily enable asynchronous interruptions (see next paragraph) |
534 |
|
|
by calling C<$OpenCL::INTERRUPT->unblock> and disable them again by |
535 |
|
|
calling C<$OpenCL::INTERRUPT->block>. |
536 |
|
|
|
537 |
|
|
=head3 Let yourself be interrupted at any time |
538 |
|
|
|
539 |
|
|
This mode is the default unless AnyEvent is loaded and initialised. In |
540 |
|
|
this mode, OpenCL asynchronously interrupts a running perl program. The |
541 |
|
|
emphasis is on both I<asynchronously> and I<running> here. |
542 |
|
|
|
543 |
|
|
Asynchronously means that perl might execute your callbacks at any |
544 |
|
|
time. For example, in the following code (I<THAT YOU SHOULD NOT COPY>), |
545 |
|
|
the C<until> loop following the marker call will be interrupted by the |
546 |
|
|
callback: |
547 |
|
|
|
548 |
root |
1.59 |
my $e = $queue->marker; |
549 |
root |
1.55 |
my $flag; |
550 |
|
|
$e->cb (sub { $flag = 1 }); |
551 |
|
|
1 until $flag; |
552 |
|
|
# $flag is now 1 |
553 |
|
|
|
554 |
|
|
The reason why you shouldn't blindly copy the above code is that |
555 |
|
|
busy waiting is a really really bad thing, and really really bad for |
556 |
|
|
performance. |
557 |
|
|
|
558 |
|
|
While at first this asynchronous business might look exciting, it can be |
559 |
|
|
really hard, because you need to be prepared for the callback code to be |
560 |
|
|
executed at any time, which limits the amount of things the callback code |
561 |
|
|
can do safely. |
562 |
|
|
|
563 |
|
|
This can be mitigated somewhat by using C<< |
564 |
|
|
$OpenCL::INTERRUPT->scope_block >> (see the L<Async::Interrupt> |
565 |
|
|
documentation for details). |
566 |
|
|
|
567 |
|
|
The other problem is that your program must be actively I<running> to be |
568 |
|
|
interrupted. When you calculate stuff, your program is running. When you |
569 |
|
|
hang in some C functions or other block execution (by calling C<sleep>, |
570 |
|
|
C<select>, running an event loop and so on), your program is waiting, not |
571 |
|
|
running. |
572 |
|
|
|
573 |
|
|
One way around that would be to attach a read watcher to your event loop, |
574 |
|
|
listening for events on C<< $OpenCL::INTERRUPT->pipe_fileno >>, using a |
575 |
|
|
dummy callback (C<sub { }>) to temporarily execute some perl code. |
576 |
|
|
|
577 |
|
|
That is then awfully close to using the built-in AnyEvent support above, |
578 |
|
|
though, so consider that one instead. |
579 |
|
|
|
580 |
|
|
=head3 Be creative |
581 |
|
|
|
582 |
|
|
OpenCL exports the L<Async::Interrupt> object it uses in the global |
583 |
|
|
variable C<$OpenCL::INTERRUPT>. You can configure it in any way you like. |
584 |
|
|
|
585 |
|
|
So if you want to feel like a real pro, err, wait, if you feel no risk |
586 |
|
|
menas no fun, you can experiment by implementing your own mode of |
587 |
|
|
operations. |
588 |
|
|
|
589 |
root |
1.52 |
=cut |
590 |
|
|
|
591 |
|
|
package OpenCL; |
592 |
|
|
|
593 |
|
|
use common::sense; |
594 |
root |
1.62 |
use Carp (); |
595 |
root |
1.55 |
use Async::Interrupt (); |
596 |
|
|
|
597 |
|
|
our $POLL_FUNC; # set by XS |
598 |
root |
1.52 |
|
599 |
|
|
BEGIN { |
600 |
root |
1.70 |
our $VERSION = '0.99'; |
601 |
root |
1.52 |
|
602 |
|
|
require XSLoader; |
603 |
|
|
XSLoader::load (__PACKAGE__, $VERSION); |
604 |
|
|
|
605 |
|
|
@OpenCL::Platform::ISA = |
606 |
|
|
@OpenCL::Device::ISA = |
607 |
|
|
@OpenCL::Context::ISA = |
608 |
|
|
@OpenCL::Queue::ISA = |
609 |
|
|
@OpenCL::Memory::ISA = |
610 |
|
|
@OpenCL::Sampler::ISA = |
611 |
|
|
@OpenCL::Program::ISA = |
612 |
|
|
@OpenCL::Kernel::ISA = |
613 |
|
|
@OpenCL::Event::ISA = OpenCL::Object::; |
614 |
|
|
|
615 |
root |
1.71 |
@OpenCL::SubDevice::ISA = OpenCL::Device::; |
616 |
|
|
|
617 |
root |
1.52 |
@OpenCL::Buffer::ISA = |
618 |
|
|
@OpenCL::Image::ISA = OpenCL::Memory::; |
619 |
|
|
|
620 |
|
|
@OpenCL::BufferObj::ISA = OpenCL::Buffer::; |
621 |
|
|
|
622 |
|
|
@OpenCL::Image2D::ISA = |
623 |
|
|
@OpenCL::Image3D::ISA = |
624 |
|
|
@OpenCL::Image2DArray::ISA = |
625 |
|
|
@OpenCL::Image1D::ISA = |
626 |
|
|
@OpenCL::Image1DArray::ISA = |
627 |
|
|
@OpenCL::Image1DBuffer::ISA = OpenCL::Image::; |
628 |
|
|
|
629 |
|
|
@OpenCL::UserEvent::ISA = OpenCL::Event::; |
630 |
root |
1.66 |
|
631 |
root |
1.67 |
@OpenCL::MappedBuffer::ISA = |
632 |
|
|
@OpenCL::MappedImage::ISA = OpenCL::Mapped::; |
633 |
root |
1.52 |
} |
634 |
|
|
|
635 |
root |
1.5 |
=head2 THE OpenCL PACKAGE |
636 |
|
|
|
637 |
|
|
=over 4 |
638 |
|
|
|
639 |
|
|
=item $int = OpenCL::errno |
640 |
|
|
|
641 |
root |
1.11 |
The last error returned by a function - it's only valid after an error occured |
642 |
|
|
and before calling another OpenCL function. |
643 |
root |
1.5 |
|
644 |
root |
1.61 |
=item $str = OpenCL::err2str [$errval] |
645 |
root |
1.5 |
|
646 |
root |
1.81 |
Converts an error value into a human readable string. If no error value is |
647 |
root |
1.61 |
given, then the last error will be used (as returned by OpenCL::errno). |
648 |
root |
1.5 |
|
649 |
root |
1.81 |
The latest version of this module knows the error constants |
650 |
|
|
listed in L<http://cvs.schmorp.de/OpenCL/errstr.h>. |
651 |
|
|
|
652 |
root |
1.9 |
=item $str = OpenCL::enum2str $enum |
653 |
root |
1.5 |
|
654 |
root |
1.30 |
Converts most enum values (of parameter names, image format constants, |
655 |
root |
1.5 |
object types, addressing and filter modes, command types etc.) into a |
656 |
root |
1.30 |
human readable string. When confronted with some random integer it can be |
657 |
root |
1.5 |
very helpful to pass it through this function to maybe get some readable |
658 |
|
|
string out of it. |
659 |
|
|
|
660 |
root |
1.81 |
The latest version of this module knows the enumaration constants |
661 |
root |
1.82 |
listed in L<http://cvs.schmorp.de/OpenCL/enumstr.h>. |
662 |
root |
1.81 |
|
663 |
root |
1.5 |
=item @platforms = OpenCL::platforms |
664 |
|
|
|
665 |
|
|
Returns all available OpenCL::Platform objects. |
666 |
|
|
|
667 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html> |
668 |
|
|
|
669 |
root |
1.56 |
=item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr |
670 |
root |
1.5 |
|
671 |
root |
1.56 |
Tries to create a context from a default device and platform type - never worked for me. |
672 |
root |
1.76 |
Consider using C<< $platform->context_from_type >> instead. |
673 |
root |
1.5 |
|
674 |
root |
1.71 |
type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU, OpenCL::DEVICE_TYPE_GPU, |
675 |
|
|
OpenCL::DEVICE_TYPE_ACCELERATOR, OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL. |
676 |
|
|
|
677 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
678 |
|
|
|
679 |
root |
1.56 |
=item $ctx = OpenCL::context $properties, \@devices, $callback->($err, $pvt) = $print_stderr) |
680 |
|
|
|
681 |
root |
1.76 |
Create a new OpenCL::Context object using the given device object(s). |
682 |
|
|
Consider using C<< $platform->context >> instead. |
683 |
root |
1.56 |
|
684 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
685 |
|
|
|
686 |
root |
1.5 |
=item OpenCL::wait_for_events $wait_events... |
687 |
|
|
|
688 |
|
|
Waits for all events to complete. |
689 |
|
|
|
690 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
691 |
|
|
|
692 |
root |
1.55 |
=item OpenCL::poll |
693 |
|
|
|
694 |
|
|
Checks if there are any outstanding events (see L<EVENT SYSTEM>) and |
695 |
|
|
invokes their callbacks. |
696 |
|
|
|
697 |
|
|
=item $OpenCL::INTERRUPT |
698 |
|
|
|
699 |
|
|
The L<Async::Interrupt> object used to signal asynchronous events (see |
700 |
|
|
L<EVENT SYSTEM>). |
701 |
|
|
|
702 |
|
|
=cut |
703 |
|
|
|
704 |
|
|
our $INTERRUPT = new Async::Interrupt c_cb => [$POLL_FUNC, 0]; |
705 |
|
|
|
706 |
|
|
&_eq_initialise ($INTERRUPT->signal_func); |
707 |
|
|
|
708 |
|
|
=item $OpenCL::WATCHER |
709 |
|
|
|
710 |
|
|
The L<AnyEvent> watcher object used to watch for asynchronous events (see |
711 |
|
|
L<EVENT SYSTEM>). This variable is C<undef> until L<AnyEvent> has been |
712 |
|
|
loaded I<and> initialised (e.g. by calling C<AnyEvent::detect>). |
713 |
|
|
|
714 |
|
|
=cut |
715 |
|
|
|
716 |
|
|
our $WATCHER; |
717 |
|
|
|
718 |
|
|
sub _init_anyevent { |
719 |
|
|
$INTERRUPT->block; |
720 |
|
|
$WATCHER = AE::io ($INTERRUPT->pipe_fileno, 0, sub { $INTERRUPT->handle }); |
721 |
|
|
} |
722 |
|
|
|
723 |
|
|
if (defined $AnyEvent::MODEL) { |
724 |
|
|
_init_anyevent; |
725 |
|
|
} else { |
726 |
|
|
push @AnyEvent::post_detect, \&_init_anyevent; |
727 |
|
|
} |
728 |
|
|
|
729 |
root |
1.5 |
=back |
730 |
|
|
|
731 |
root |
1.52 |
=head2 THE OpenCL::Object CLASS |
732 |
|
|
|
733 |
|
|
This is the base class for all objects in the OpenCL module. The only |
734 |
|
|
method it implements is the C<id> method, which is only useful if you want |
735 |
|
|
to interface to OpenCL on the C level. |
736 |
|
|
|
737 |
|
|
=over 4 |
738 |
|
|
|
739 |
|
|
=item $iv = $obj->id |
740 |
|
|
|
741 |
|
|
OpenCL objects are represented by pointers or integers on the C level. If |
742 |
|
|
you want to interface to an OpenCL object directly on the C level, then |
743 |
|
|
you need this value, which is returned by this method. You should use an |
744 |
|
|
C<IV> type in your code and cast that to the correct type. |
745 |
|
|
|
746 |
|
|
=cut |
747 |
|
|
|
748 |
|
|
sub OpenCL::Object::id { |
749 |
root |
1.55 |
ref $_[0] eq "SCALAR" |
750 |
|
|
? ${ $_[0] } |
751 |
|
|
: $_[0][0] |
752 |
root |
1.52 |
} |
753 |
|
|
|
754 |
|
|
=back |
755 |
|
|
|
756 |
root |
1.5 |
=head2 THE OpenCL::Platform CLASS |
757 |
|
|
|
758 |
|
|
=over 4 |
759 |
|
|
|
760 |
|
|
=item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL) |
761 |
|
|
|
762 |
|
|
Returns a list of matching OpenCL::Device objects. |
763 |
|
|
|
764 |
root |
1.56 |
=item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $callback->($err, $pvt) = $print_stderr) |
765 |
root |
1.5 |
|
766 |
root |
1.22 |
Tries to create a context. Never worked for me, and you need devices explicitly anyway. |
767 |
root |
1.5 |
|
768 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
769 |
|
|
|
770 |
root |
1.56 |
=item $ctx = $platform->context ($properties, \@devices, $callback->($err, $pvt) = $print_stderr) |
771 |
root |
1.11 |
|
772 |
|
|
Create a new OpenCL::Context object using the given device object(s)- a |
773 |
root |
1.79 |
OpenCL::CONTEXT_PLATFORM property is supplied automatically. |
774 |
root |
1.11 |
|
775 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
776 |
|
|
|
777 |
root |
1.20 |
=item $packed_value = $platform->info ($name) |
778 |
|
|
|
779 |
|
|
Calls C<clGetPlatformInfo> and returns the packed, raw value - for |
780 |
root |
1.22 |
strings, this will be the string (possibly including terminating \0), for |
781 |
|
|
other values you probably need to use the correct C<unpack>. |
782 |
root |
1.20 |
|
783 |
root |
1.22 |
It's best to avoid this method and use one of the following convenience |
784 |
|
|
wrappers. |
785 |
root |
1.20 |
|
786 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html> |
787 |
|
|
|
788 |
root |
1.50 |
=item $platform->unload_compiler |
789 |
|
|
|
790 |
|
|
Attempts to unload the compiler for this platform, for endless |
791 |
|
|
profit. Does nothing on OpenCL 1.1. |
792 |
|
|
|
793 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clUnloadPlatformCompiler.html> |
794 |
|
|
|
795 |
root |
1.20 |
=for gengetinfo begin platform |
796 |
|
|
|
797 |
|
|
=item $string = $platform->profile |
798 |
|
|
|
799 |
root |
1.71 |
Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_PROFILE> and returns the result. |
800 |
root |
1.20 |
|
801 |
|
|
=item $string = $platform->version |
802 |
|
|
|
803 |
root |
1.71 |
Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VERSION> and returns the result. |
804 |
root |
1.20 |
|
805 |
|
|
=item $string = $platform->name |
806 |
|
|
|
807 |
root |
1.71 |
Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_NAME> and returns the result. |
808 |
root |
1.20 |
|
809 |
|
|
=item $string = $platform->vendor |
810 |
|
|
|
811 |
root |
1.71 |
Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_VENDOR> and returns the result. |
812 |
root |
1.20 |
|
813 |
|
|
=item $string = $platform->extensions |
814 |
|
|
|
815 |
root |
1.71 |
Calls C<clGetPlatformInfo> with C<OpenCL::PLATFORM_EXTENSIONS> and returns the result. |
816 |
root |
1.21 |
|
817 |
root |
1.20 |
=for gengetinfo end platform |
818 |
|
|
|
819 |
root |
1.5 |
=back |
820 |
|
|
|
821 |
|
|
=head2 THE OpenCL::Device CLASS |
822 |
|
|
|
823 |
|
|
=over 4 |
824 |
|
|
|
825 |
|
|
=item $packed_value = $device->info ($name) |
826 |
|
|
|
827 |
|
|
See C<< $platform->info >> for details. |
828 |
|
|
|
829 |
root |
1.78 |
type: OpenCL::DEVICE_TYPE_DEFAULT, OpenCL::DEVICE_TYPE_CPU, |
830 |
|
|
OpenCL::DEVICE_TYPE_GPU, OpenCL::DEVICE_TYPE_ACCELERATOR, |
831 |
|
|
OpenCL::DEVICE_TYPE_CUSTOM, OpenCL::DEVICE_TYPE_ALL. |
832 |
|
|
|
833 |
|
|
fp_config: OpenCL::FP_DENORM, OpenCL::FP_INF_NAN, OpenCL::FP_ROUND_TO_NEAREST, |
834 |
|
|
OpenCL::FP_ROUND_TO_ZERO, OpenCL::FP_ROUND_TO_INF, OpenCL::FP_FMA, |
835 |
|
|
OpenCL::FP_SOFT_FLOAT, OpenCL::FP_CORRECTLY_ROUNDED_DIVIDE_SQRT. |
836 |
|
|
|
837 |
|
|
mem_cache_type: OpenCL::NONE, OpenCL::READ_ONLY_CACHE, OpenCL::READ_WRITE_CACHE. |
838 |
|
|
|
839 |
|
|
local_mem_type: OpenCL::LOCAL, OpenCL::GLOBAL. |
840 |
|
|
|
841 |
|
|
exec_capabilities: OpenCL::EXEC_KERNEL, OpenCL::EXEC_NATIVE_KERNEL. |
842 |
|
|
|
843 |
|
|
command_queue_properties: OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, |
844 |
|
|
OpenCL::QUEUE_PROFILING_ENABLE. |
845 |
|
|
|
846 |
|
|
partition_properties: OpenCL::DEVICE_PARTITION_EQUALLY, |
847 |
|
|
OpenCL::DEVICE_PARTITION_BY_COUNTS, OpenCL::DEVICE_PARTITION_BY_COUNTS_LIST_END, |
848 |
|
|
OpenCL::DEVICE_PARTITION_BY_AFFINITY_DOMAIN. |
849 |
|
|
|
850 |
|
|
affinity_domain: OpenCL::DEVICE_AFFINITY_DOMAIN_NUMA, |
851 |
|
|
OpenCL::DEVICE_AFFINITY_DOMAIN_L4_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L3_CACHE, |
852 |
|
|
OpenCL::DEVICE_AFFINITY_DOMAIN_L2_CACHE, OpenCL::DEVICE_AFFINITY_DOMAIN_L1_CACHE, |
853 |
|
|
OpenCL::DEVICE_AFFINITY_DOMAIN_NEXT_PARTITIONABLE. |
854 |
|
|
|
855 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html> |
856 |
|
|
|
857 |
root |
1.71 |
=item @devices = $device->sub_devices (\@properties) |
858 |
|
|
|
859 |
|
|
Creates OpencL::SubDevice objects by partitioning an existing device. |
860 |
|
|
|
861 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateSubDevices.html> |
862 |
|
|
|
863 |
root |
1.21 |
=for gengetinfo begin device |
864 |
|
|
|
865 |
|
|
=item $device_type = $device->type |
866 |
|
|
|
867 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_TYPE> and returns the result. |
868 |
root |
1.21 |
|
869 |
|
|
=item $uint = $device->vendor_id |
870 |
|
|
|
871 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR_ID> and returns the result. |
872 |
root |
1.21 |
|
873 |
|
|
=item $uint = $device->max_compute_units |
874 |
|
|
|
875 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_COMPUTE_UNITS> and returns the result. |
876 |
root |
1.21 |
|
877 |
|
|
=item $uint = $device->max_work_item_dimensions |
878 |
|
|
|
879 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_DIMENSIONS> and returns the result. |
880 |
root |
1.21 |
|
881 |
|
|
=item $int = $device->max_work_group_size |
882 |
|
|
|
883 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_GROUP_SIZE> and returns the result. |
884 |
root |
1.21 |
|
885 |
|
|
=item @ints = $device->max_work_item_sizes |
886 |
|
|
|
887 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WORK_ITEM_SIZES> and returns the result. |
888 |
root |
1.21 |
|
889 |
|
|
=item $uint = $device->preferred_vector_width_char |
890 |
|
|
|
891 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_CHAR> and returns the result. |
892 |
root |
1.21 |
|
893 |
|
|
=item $uint = $device->preferred_vector_width_short |
894 |
|
|
|
895 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_SHORT> and returns the result. |
896 |
root |
1.21 |
|
897 |
|
|
=item $uint = $device->preferred_vector_width_int |
898 |
|
|
|
899 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_INT> and returns the result. |
900 |
root |
1.21 |
|
901 |
|
|
=item $uint = $device->preferred_vector_width_long |
902 |
|
|
|
903 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_LONG> and returns the result. |
904 |
root |
1.21 |
|
905 |
|
|
=item $uint = $device->preferred_vector_width_float |
906 |
|
|
|
907 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_FLOAT> and returns the result. |
908 |
root |
1.21 |
|
909 |
|
|
=item $uint = $device->preferred_vector_width_double |
910 |
|
|
|
911 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_DOUBLE> and returns the result. |
912 |
root |
1.21 |
|
913 |
|
|
=item $uint = $device->max_clock_frequency |
914 |
|
|
|
915 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CLOCK_FREQUENCY> and returns the result. |
916 |
root |
1.21 |
|
917 |
|
|
=item $bitfield = $device->address_bits |
918 |
|
|
|
919 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ADDRESS_BITS> and returns the result. |
920 |
root |
1.21 |
|
921 |
|
|
=item $uint = $device->max_read_image_args |
922 |
|
|
|
923 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_READ_IMAGE_ARGS> and returns the result. |
924 |
root |
1.21 |
|
925 |
|
|
=item $uint = $device->max_write_image_args |
926 |
|
|
|
927 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_WRITE_IMAGE_ARGS> and returns the result. |
928 |
root |
1.21 |
|
929 |
|
|
=item $ulong = $device->max_mem_alloc_size |
930 |
|
|
|
931 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_MEM_ALLOC_SIZE> and returns the result. |
932 |
root |
1.21 |
|
933 |
|
|
=item $int = $device->image2d_max_width |
934 |
|
|
|
935 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_WIDTH> and returns the result. |
936 |
root |
1.21 |
|
937 |
|
|
=item $int = $device->image2d_max_height |
938 |
|
|
|
939 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE2D_MAX_HEIGHT> and returns the result. |
940 |
root |
1.21 |
|
941 |
|
|
=item $int = $device->image3d_max_width |
942 |
|
|
|
943 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_WIDTH> and returns the result. |
944 |
root |
1.21 |
|
945 |
|
|
=item $int = $device->image3d_max_height |
946 |
|
|
|
947 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_HEIGHT> and returns the result. |
948 |
root |
1.21 |
|
949 |
|
|
=item $int = $device->image3d_max_depth |
950 |
|
|
|
951 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE3D_MAX_DEPTH> and returns the result. |
952 |
root |
1.21 |
|
953 |
|
|
=item $uint = $device->image_support |
954 |
|
|
|
955 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_IMAGE_SUPPORT> and returns the result. |
956 |
root |
1.21 |
|
957 |
|
|
=item $int = $device->max_parameter_size |
958 |
|
|
|
959 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_PARAMETER_SIZE> and returns the result. |
960 |
root |
1.21 |
|
961 |
|
|
=item $uint = $device->max_samplers |
962 |
|
|
|
963 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_SAMPLERS> and returns the result. |
964 |
root |
1.21 |
|
965 |
|
|
=item $uint = $device->mem_base_addr_align |
966 |
|
|
|
967 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MEM_BASE_ADDR_ALIGN> and returns the result. |
968 |
root |
1.21 |
|
969 |
|
|
=item $uint = $device->min_data_type_align_size |
970 |
|
|
|
971 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MIN_DATA_TYPE_ALIGN_SIZE> and returns the result. |
972 |
root |
1.21 |
|
973 |
|
|
=item $device_fp_config = $device->single_fp_config |
974 |
|
|
|
975 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_SINGLE_FP_CONFIG> and returns the result. |
976 |
root |
1.21 |
|
977 |
|
|
=item $device_mem_cache_type = $device->global_mem_cache_type |
978 |
|
|
|
979 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_TYPE> and returns the result. |
980 |
root |
1.21 |
|
981 |
|
|
=item $uint = $device->global_mem_cacheline_size |
982 |
|
|
|
983 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHELINE_SIZE> and returns the result. |
984 |
root |
1.21 |
|
985 |
|
|
=item $ulong = $device->global_mem_cache_size |
986 |
|
|
|
987 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_CACHE_SIZE> and returns the result. |
988 |
root |
1.21 |
|
989 |
|
|
=item $ulong = $device->global_mem_size |
990 |
|
|
|
991 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_GLOBAL_MEM_SIZE> and returns the result. |
992 |
root |
1.21 |
|
993 |
|
|
=item $ulong = $device->max_constant_buffer_size |
994 |
|
|
|
995 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_BUFFER_SIZE> and returns the result. |
996 |
root |
1.21 |
|
997 |
|
|
=item $uint = $device->max_constant_args |
998 |
|
|
|
999 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_MAX_CONSTANT_ARGS> and returns the result. |
1000 |
root |
1.21 |
|
1001 |
|
|
=item $device_local_mem_type = $device->local_mem_type |
1002 |
|
|
|
1003 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_TYPE> and returns the result. |
1004 |
root |
1.21 |
|
1005 |
|
|
=item $ulong = $device->local_mem_size |
1006 |
|
|
|
1007 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_LOCAL_MEM_SIZE> and returns the result. |
1008 |
root |
1.21 |
|
1009 |
|
|
=item $boolean = $device->error_correction_support |
1010 |
|
|
|
1011 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ERROR_CORRECTION_SUPPORT> and returns the result. |
1012 |
root |
1.21 |
|
1013 |
|
|
=item $int = $device->profiling_timer_resolution |
1014 |
|
|
|
1015 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILING_TIMER_RESOLUTION> and returns the result. |
1016 |
root |
1.21 |
|
1017 |
|
|
=item $boolean = $device->endian_little |
1018 |
|
|
|
1019 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_ENDIAN_LITTLE> and returns the result. |
1020 |
root |
1.21 |
|
1021 |
|
|
=item $boolean = $device->available |
1022 |
|
|
|
1023 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AVAILABLE> and returns the result. |
1024 |
root |
1.21 |
|
1025 |
|
|
=item $boolean = $device->compiler_available |
1026 |
|
|
|
1027 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_COMPILER_AVAILABLE> and returns the result. |
1028 |
root |
1.21 |
|
1029 |
|
|
=item $device_exec_capabilities = $device->execution_capabilities |
1030 |
|
|
|
1031 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXECUTION_CAPABILITIES> and returns the result. |
1032 |
root |
1.21 |
|
1033 |
|
|
=item $command_queue_properties = $device->properties |
1034 |
|
|
|
1035 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_QUEUE_PROPERTIES> and returns the result. |
1036 |
root |
1.21 |
|
1037 |
|
|
=item $ = $device->platform |
1038 |
|
|
|
1039 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PLATFORM> and returns the result. |
1040 |
root |
1.21 |
|
1041 |
|
|
=item $string = $device->name |
1042 |
|
|
|
1043 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NAME> and returns the result. |
1044 |
root |
1.21 |
|
1045 |
|
|
=item $string = $device->vendor |
1046 |
|
|
|
1047 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VENDOR> and returns the result. |
1048 |
root |
1.21 |
|
1049 |
|
|
=item $string = $device->driver_version |
1050 |
|
|
|
1051 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DRIVER_VERSION> and returns the result. |
1052 |
root |
1.21 |
|
1053 |
|
|
=item $string = $device->profile |
1054 |
|
|
|
1055 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PROFILE> and returns the result. |
1056 |
root |
1.21 |
|
1057 |
|
|
=item $string = $device->version |
1058 |
|
|
|
1059 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_VERSION> and returns the result. |
1060 |
root |
1.21 |
|
1061 |
|
|
=item $string = $device->extensions |
1062 |
|
|
|
1063 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_EXTENSIONS> and returns the result. |
1064 |
root |
1.21 |
|
1065 |
|
|
=item $uint = $device->preferred_vector_width_half |
1066 |
|
|
|
1067 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PREFERRED_VECTOR_WIDTH_HALF> and returns the result. |
1068 |
root |
1.21 |
|
1069 |
|
|
=item $uint = $device->native_vector_width_char |
1070 |
|
|
|
1071 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_CHAR> and returns the result. |
1072 |
root |
1.21 |
|
1073 |
|
|
=item $uint = $device->native_vector_width_short |
1074 |
|
|
|
1075 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_SHORT> and returns the result. |
1076 |
root |
1.21 |
|
1077 |
|
|
=item $uint = $device->native_vector_width_int |
1078 |
|
|
|
1079 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_INT> and returns the result. |
1080 |
root |
1.21 |
|
1081 |
|
|
=item $uint = $device->native_vector_width_long |
1082 |
|
|
|
1083 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_LONG> and returns the result. |
1084 |
root |
1.21 |
|
1085 |
|
|
=item $uint = $device->native_vector_width_float |
1086 |
|
|
|
1087 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_FLOAT> and returns the result. |
1088 |
root |
1.21 |
|
1089 |
|
|
=item $uint = $device->native_vector_width_double |
1090 |
|
|
|
1091 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_DOUBLE> and returns the result. |
1092 |
root |
1.21 |
|
1093 |
|
|
=item $uint = $device->native_vector_width_half |
1094 |
|
|
|
1095 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_NATIVE_VECTOR_WIDTH_HALF> and returns the result. |
1096 |
root |
1.21 |
|
1097 |
|
|
=item $device_fp_config = $device->double_fp_config |
1098 |
|
|
|
1099 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_DOUBLE_FP_CONFIG> and returns the result. |
1100 |
root |
1.21 |
|
1101 |
|
|
=item $device_fp_config = $device->half_fp_config |
1102 |
|
|
|
1103 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HALF_FP_CONFIG> and returns the result. |
1104 |
root |
1.21 |
|
1105 |
|
|
=item $boolean = $device->host_unified_memory |
1106 |
|
|
|
1107 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_HOST_UNIFIED_MEMORY> and returns the result. |
1108 |
root |
1.21 |
|
1109 |
|
|
=item $device = $device->parent_device_ext |
1110 |
|
|
|
1111 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARENT_DEVICE_EXT> and returns the result. |
1112 |
root |
1.21 |
|
1113 |
|
|
=item @device_partition_property_exts = $device->partition_types_ext |
1114 |
|
|
|
1115 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_TYPES_EXT> and returns the result. |
1116 |
root |
1.21 |
|
1117 |
|
|
=item @device_partition_property_exts = $device->affinity_domains_ext |
1118 |
|
|
|
1119 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_AFFINITY_DOMAINS_EXT> and returns the result. |
1120 |
root |
1.21 |
|
1121 |
root |
1.45 |
=item $uint = $device->reference_count_ext |
1122 |
root |
1.21 |
|
1123 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_REFERENCE_COUNT_EXT> and returns the result. |
1124 |
root |
1.21 |
|
1125 |
|
|
=item @device_partition_property_exts = $device->partition_style_ext |
1126 |
|
|
|
1127 |
root |
1.71 |
Calls C<clGetDeviceInfo> with C<OpenCL::DEVICE_PARTITION_STYLE_EXT> and returns the result. |
1128 |
root |
1.21 |
|
1129 |
|
|
=for gengetinfo end device |
1130 |
|
|
|
1131 |
root |
1.5 |
=back |
1132 |
|
|
|
1133 |
|
|
=head2 THE OpenCL::Context CLASS |
1134 |
|
|
|
1135 |
root |
1.71 |
An OpenCL::Context is basically a container, or manager, for a number of |
1136 |
|
|
devices of a platform. It is used to create all sorts of secondary objects |
1137 |
|
|
such as buffers, queues, programs and so on. |
1138 |
|
|
|
1139 |
|
|
All context creation functions and methods take a list of properties |
1140 |
|
|
(type-value pairs). All property values can be specified as integers - |
1141 |
|
|
some additionally support other types: |
1142 |
|
|
|
1143 |
|
|
=over 4 |
1144 |
|
|
|
1145 |
|
|
=item OpenCL::CONTEXT_PLATFORM |
1146 |
|
|
|
1147 |
|
|
Also accepts OpenCL::Platform objects. |
1148 |
|
|
|
1149 |
|
|
=item OpenCL::GLX_DISPLAY_KHR |
1150 |
|
|
|
1151 |
|
|
Also accepts C<undef>, in which case a deep and troubling hack is engaged |
1152 |
|
|
to find the current glx display (see L<GLX SUPPORT>). |
1153 |
|
|
|
1154 |
|
|
=item OpenCL::GL_CONTEXT_KHR |
1155 |
|
|
|
1156 |
|
|
Also accepts C<undef>, in which case a deep and troubling hack is engaged |
1157 |
|
|
to find the current glx context (see L<GLX SUPPORT>). |
1158 |
|
|
|
1159 |
|
|
=back |
1160 |
|
|
|
1161 |
root |
1.5 |
=over 4 |
1162 |
|
|
|
1163 |
root |
1.51 |
=item $prog = $ctx->build_program ($program, $options = "") |
1164 |
|
|
|
1165 |
|
|
This convenience function tries to build the program on all devices in |
1166 |
|
|
the context. If the build fails, then the function will C<croak> with the |
1167 |
|
|
build log. Otherwise ti returns the program object. |
1168 |
|
|
|
1169 |
|
|
The C<$program> can either be a C<OpenCL::Program> object or a string |
1170 |
|
|
containing the program. In the latter case, a program objetc will be |
1171 |
|
|
created automatically. |
1172 |
|
|
|
1173 |
|
|
=cut |
1174 |
|
|
|
1175 |
|
|
sub OpenCL::Context::build_program { |
1176 |
|
|
my ($self, $prog, $options) = @_; |
1177 |
|
|
|
1178 |
|
|
$prog = $self->program_with_source ($prog) |
1179 |
|
|
unless ref $prog; |
1180 |
|
|
|
1181 |
root |
1.61 |
eval { $prog->build (undef, $options); 1 } |
1182 |
|
|
or errno == BUILD_PROGRAM_FAILURE |
1183 |
root |
1.63 |
or errno == INVALID_BINARY # workaround nvidia bug |
1184 |
root |
1.61 |
or Carp::croak "OpenCL::Context->build_program: " . err2str; |
1185 |
|
|
|
1186 |
|
|
# we check status for all devices |
1187 |
root |
1.51 |
for my $dev ($self->devices) { |
1188 |
root |
1.61 |
$prog->build_status ($dev) == BUILD_SUCCESS |
1189 |
root |
1.62 |
or Carp::croak "Building OpenCL program for device '" . $dev->name . "' failed:\n" |
1190 |
|
|
. $prog->build_log ($dev); |
1191 |
root |
1.51 |
} |
1192 |
|
|
|
1193 |
|
|
$prog |
1194 |
|
|
} |
1195 |
|
|
|
1196 |
root |
1.9 |
=item $queue = $ctx->queue ($device, $properties) |
1197 |
root |
1.5 |
|
1198 |
root |
1.9 |
Create a new OpenCL::Queue object from the context and the given device. |
1199 |
root |
1.5 |
|
1200 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html> |
1201 |
|
|
|
1202 |
root |
1.45 |
Example: create an out-of-order queue. |
1203 |
|
|
|
1204 |
|
|
$queue = $ctx->queue ($device, OpenCL::QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE); |
1205 |
|
|
|
1206 |
root |
1.5 |
=item $ev = $ctx->user_event |
1207 |
|
|
|
1208 |
|
|
Creates a new OpenCL::UserEvent object. |
1209 |
|
|
|
1210 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateUserEvent.html> |
1211 |
|
|
|
1212 |
|
|
=item $buf = $ctx->buffer ($flags, $len) |
1213 |
|
|
|
1214 |
root |
1.27 |
Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object with the |
1215 |
|
|
given flags and octet-size. |
1216 |
root |
1.5 |
|
1217 |
root |
1.71 |
flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_WRITE_ONLY, OpenCL::MEM_READ_ONLY, |
1218 |
|
|
OpenCL::MEM_USE_HOST_PTR, OpenCL::MEM_ALLOC_HOST_PTR, OpenCL::MEM_COPY_HOST_PTR, |
1219 |
|
|
OpenCL::MEM_HOST_WRITE_ONLY, OpenCL::MEM_HOST_READ_ONLY, OpenCL::MEM_HOST_NO_ACCESS. |
1220 |
|
|
|
1221 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateBuffer.html> |
1222 |
|
|
|
1223 |
|
|
=item $buf = $ctx->buffer_sv ($flags, $data) |
1224 |
|
|
|
1225 |
root |
1.27 |
Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object and |
1226 |
|
|
initialise it with the given data values. |
1227 |
root |
1.5 |
|
1228 |
root |
1.59 |
=item $img = $ctx->image ($self, $flags, $channel_order, $channel_type, $type, $width, $height, $depth = 0, $array_size = 0, $row_pitch = 0, $slice_pitch = 0, $num_mip_level = 0, $num_samples = 0, $*data = &PL_sv_undef) |
1229 |
root |
1.49 |
|
1230 |
|
|
Creates a new OpenCL::Image object and optionally initialises it with |
1231 |
|
|
the given data values. |
1232 |
|
|
|
1233 |
root |
1.71 |
channel_order: OpenCL::R, OpenCL::A, OpenCL::RG, OpenCL::RA, OpenCL::RGB, |
1234 |
|
|
OpenCL::RGBA, OpenCL::BGRA, OpenCL::ARGB, OpenCL::INTENSITY, OpenCL::LUMINANCE, |
1235 |
|
|
OpenCL::Rx, OpenCL::RGx, OpenCL::RGBx. |
1236 |
|
|
|
1237 |
|
|
channel_type: OpenCL::SNORM_INT8, OpenCL::SNORM_INT16, OpenCL::UNORM_INT8, |
1238 |
|
|
OpenCL::UNORM_INT16, OpenCL::UNORM_SHORT_565, OpenCL::UNORM_SHORT_555, |
1239 |
|
|
OpenCL::UNORM_INT_101010, OpenCL::SIGNED_INT8, OpenCL::SIGNED_INT16, |
1240 |
|
|
OpenCL::SIGNED_INT32, OpenCL::UNSIGNED_INT8, OpenCL::UNSIGNED_INT16, |
1241 |
|
|
OpenCL::UNSIGNED_INT32, OpenCL::HALF_FLOAT, OpenCL::FLOAT. |
1242 |
|
|
|
1243 |
|
|
type: OpenCL::MEM_OBJECT_BUFFER, OpenCL::MEM_OBJECT_IMAGE2D, |
1244 |
|
|
OpenCL::MEM_OBJECT_IMAGE3D, OpenCL::MEM_OBJECT_IMAGE2D_ARRAY, |
1245 |
|
|
OpenCL::MEM_OBJECT_IMAGE1D, OpenCL::MEM_OBJECT_IMAGE1D_ARRAY, |
1246 |
|
|
OpenCL::MEM_OBJECT_IMAGE1D_BUFFER. |
1247 |
|
|
|
1248 |
root |
1.49 |
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateImage.html> |
1249 |
|
|
|
1250 |
root |
1.18 |
=item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef) |
1251 |
root |
1.5 |
|
1252 |
root |
1.27 |
Creates a new OpenCL::Image2D object and optionally initialises it with |
1253 |
|
|
the given data values. |
1254 |
root |
1.5 |
|
1255 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html> |
1256 |
|
|
|
1257 |
root |
1.18 |
=item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $row_pitch = 0, $slice_pitch = 0, $data = undef) |
1258 |
root |
1.5 |
|
1259 |
root |
1.27 |
Creates a new OpenCL::Image3D object and optionally initialises it with |
1260 |
|
|
the given data values. |
1261 |
root |
1.5 |
|
1262 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
1263 |
|
|
|
1264 |
root |
1.33 |
=item $buffer = $ctx->gl_buffer ($flags, $bufobj) |
1265 |
|
|
|
1266 |
|
|
Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given |
1267 |
|
|
OpenGL buffer object. |
1268 |
|
|
|
1269 |
root |
1.71 |
flags: OpenCL::MEM_READ_WRITE, OpenCL::MEM_READ_ONLY, OpenCL::MEM_WRITE_ONLY. |
1270 |
|
|
|
1271 |
root |
1.33 |
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html |
1272 |
|
|
|
1273 |
root |
1.47 |
=item $img = $ctx->gl_texture ($flags, $target, $miplevel, $texture) |
1274 |
|
|
|
1275 |
|
|
Creates a new OpenCL::Image object that refers to the given OpenGL |
1276 |
|
|
texture object or buffer. |
1277 |
|
|
|
1278 |
root |
1.71 |
target: GL_TEXTURE_1D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_BUFFER, |
1279 |
|
|
GL_TEXTURE_2D, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_3D, |
1280 |
|
|
GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, |
1281 |
|
|
GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, |
1282 |
|
|
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, |
1283 |
|
|
GL_TEXTURE_RECTANGLE/GL_TEXTURE_RECTANGLE_ARB. |
1284 |
|
|
|
1285 |
root |
1.47 |
http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateFromGLTexture.html |
1286 |
|
|
|
1287 |
|
|
=item $img = $ctx->gl_texture2d ($flags, $target, $miplevel, $texture) |
1288 |
root |
1.33 |
|
1289 |
|
|
Creates a new OpenCL::Image2D object that refers to the given OpenGL |
1290 |
|
|
2D texture object. |
1291 |
|
|
|
1292 |
|
|
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture2D.html |
1293 |
|
|
|
1294 |
root |
1.47 |
=item $img = $ctx->gl_texture3d ($flags, $target, $miplevel, $texture) |
1295 |
root |
1.33 |
|
1296 |
|
|
Creates a new OpenCL::Image3D object that refers to the given OpenGL |
1297 |
|
|
3D texture object. |
1298 |
|
|
|
1299 |
|
|
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture3D.html |
1300 |
|
|
|
1301 |
|
|
=item $ctx->gl_renderbuffer ($flags, $renderbuffer) |
1302 |
|
|
|
1303 |
|
|
Creates a new OpenCL::Image2D object that refers to the given OpenGL |
1304 |
|
|
render buffer. |
1305 |
|
|
|
1306 |
|
|
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLRenderbuffer.html |
1307 |
|
|
|
1308 |
root |
1.5 |
=item @formats = $ctx->supported_image_formats ($flags, $image_type) |
1309 |
|
|
|
1310 |
|
|
Returns a list of matching image formats - each format is an arrayref with |
1311 |
|
|
two values, $channel_order and $channel_type, in it. |
1312 |
|
|
|
1313 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSupportedImageFormats.html> |
1314 |
|
|
|
1315 |
|
|
=item $sampler = $ctx->sampler ($normalized_coords, $addressing_mode, $filter_mode) |
1316 |
|
|
|
1317 |
|
|
Creates a new OpenCL::Sampler object. |
1318 |
|
|
|
1319 |
root |
1.71 |
addressing_mode: OpenCL::ADDRESS_NONE, OpenCL::ADDRESS_CLAMP_TO_EDGE, |
1320 |
|
|
OpenCL::ADDRESS_CLAMP, OpenCL::ADDRESS_REPEAT, OpenCL::ADDRESS_MIRRORED_REPEAT. |
1321 |
|
|
|
1322 |
|
|
filter_mode: OpenCL::FILTER_NEAREST, OpenCL::FILTER_LINEAR. |
1323 |
|
|
|
1324 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSampler.html> |
1325 |
|
|
|
1326 |
|
|
=item $program = $ctx->program_with_source ($string) |
1327 |
|
|
|
1328 |
|
|
Creates a new OpenCL::Program object from the given source code. |
1329 |
|
|
|
1330 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html> |
1331 |
|
|
|
1332 |
root |
1.69 |
=item ($program, \@status) = $ctx->program_with_binary (\@devices, \@binaries) |
1333 |
|
|
|
1334 |
|
|
Creates a new OpenCL::Program object from the given binaries. |
1335 |
|
|
|
1336 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithBinary.html> |
1337 |
|
|
|
1338 |
|
|
Example: clone an existing program object that contains a successfully |
1339 |
|
|
compiled program, no matter how useless this is. |
1340 |
|
|
|
1341 |
|
|
my $clone = $ctx->program_with_binary ([$prog->devices], [$prog->binaries]); |
1342 |
|
|
|
1343 |
root |
1.71 |
=item $program = $ctx->program_with_built_in_kernels (\@devices, $kernel_names) |
1344 |
|
|
|
1345 |
|
|
Creates a new OpenCL::Program object from the given built-in kernel names. |
1346 |
|
|
|
1347 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCreateProgramWithBuiltInKernels.html> |
1348 |
|
|
|
1349 |
root |
1.75 |
=item $program = $ctx->link_program (\@devices, $options, \@programs, $cb->($program) = undef) |
1350 |
|
|
|
1351 |
|
|
Links all (already compiled) program objects specified in C<@programs> |
1352 |
|
|
together and returns a new OpenCL::Program object with the result. |
1353 |
|
|
|
1354 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clLinkProgram.html> |
1355 |
|
|
|
1356 |
root |
1.20 |
=item $packed_value = $ctx->info ($name) |
1357 |
|
|
|
1358 |
|
|
See C<< $platform->info >> for details. |
1359 |
|
|
|
1360 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html> |
1361 |
|
|
|
1362 |
|
|
=for gengetinfo begin context |
1363 |
|
|
|
1364 |
root |
1.21 |
=item $uint = $context->reference_count |
1365 |
|
|
|
1366 |
root |
1.71 |
Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_REFERENCE_COUNT> and returns the result. |
1367 |
root |
1.21 |
|
1368 |
|
|
=item @devices = $context->devices |
1369 |
|
|
|
1370 |
root |
1.71 |
Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_DEVICES> and returns the result. |
1371 |
root |
1.21 |
|
1372 |
|
|
=item @property_ints = $context->properties |
1373 |
|
|
|
1374 |
root |
1.71 |
Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_PROPERTIES> and returns the result. |
1375 |
root |
1.21 |
|
1376 |
|
|
=item $uint = $context->num_devices |
1377 |
|
|
|
1378 |
root |
1.71 |
Calls C<clGetContextInfo> with C<OpenCL::CONTEXT_NUM_DEVICES> and returns the result. |
1379 |
root |
1.21 |
|
1380 |
root |
1.20 |
=for gengetinfo end context |
1381 |
|
|
|
1382 |
root |
1.5 |
=back |
1383 |
|
|
|
1384 |
|
|
=head2 THE OpenCL::Queue CLASS |
1385 |
|
|
|
1386 |
|
|
An OpenCL::Queue represents an execution queue for OpenCL. You execute |
1387 |
root |
1.59 |
requests by calling their respective method and waiting for it to complete |
1388 |
|
|
in some way. |
1389 |
root |
1.5 |
|
1390 |
root |
1.59 |
Most methods that enqueue some request return an event object that can |
1391 |
|
|
be used to wait for completion (optionally using a callback), unless |
1392 |
|
|
the method is called in void context, in which case no event object is |
1393 |
|
|
created. |
1394 |
root |
1.5 |
|
1395 |
|
|
They also allow you to specify any number of other event objects that this |
1396 |
|
|
request has to wait for before it starts executing, by simply passing the |
1397 |
root |
1.45 |
event objects as extra parameters to the enqueue methods. To simplify |
1398 |
|
|
program design, this module ignores any C<undef> values in the list of |
1399 |
|
|
events. This makes it possible to code operations such as this, without |
1400 |
|
|
having to put a valid event object into C<$event> first: |
1401 |
|
|
|
1402 |
root |
1.59 |
$event = $queue->xxx (..., $event); |
1403 |
root |
1.5 |
|
1404 |
|
|
Queues execute in-order by default, without any parallelism, so in most |
1405 |
root |
1.6 |
cases (i.e. you use only one queue) it's not necessary to wait for or |
1406 |
root |
1.45 |
create event objects, althoguh an our of order queue is often a bit |
1407 |
|
|
faster. |
1408 |
root |
1.5 |
|
1409 |
|
|
=over 4 |
1410 |
|
|
|
1411 |
root |
1.59 |
=item $ev = $queue->read_buffer ($buffer, $blocking, $offset, $len, $data, $wait_events...) |
1412 |
root |
1.5 |
|
1413 |
|
|
Reads data from buffer into the given string. |
1414 |
|
|
|
1415 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBuffer.html> |
1416 |
|
|
|
1417 |
root |
1.59 |
=item $ev = $queue->write_buffer ($buffer, $blocking, $offset, $data, $wait_events...) |
1418 |
root |
1.5 |
|
1419 |
|
|
Writes data to buffer from the given string. |
1420 |
|
|
|
1421 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBuffer.html> |
1422 |
|
|
|
1423 |
root |
1.59 |
=item $ev = $queue->copy_buffer ($src, $dst, $src_offset, $dst_offset, $len, $wait_events...) |
1424 |
root |
1.5 |
|
1425 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBuffer.html> |
1426 |
|
|
|
1427 |
root |
1.83 |
$eue->read_buffer_rect ($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...) |
1428 |
root |
1.25 |
|
1429 |
|
|
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadBufferRect.html |
1430 |
|
|
|
1431 |
root |
1.83 |
=item $ev = $queue->write_buffer_rect ($buf, $blocking, $buf_y, $host_x, $host_z, $height, $buf_row_pitch, $host_row_pitch, $data, $wait_events...) |
1432 |
root |
1.25 |
|
1433 |
|
|
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteBufferRect.html |
1434 |
|
|
|
1435 |
root |
1.65 |
=item $ev = $queue->copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...) |
1436 |
|
|
|
1437 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html> |
1438 |
|
|
|
1439 |
root |
1.59 |
=item $ev = $queue->read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
1440 |
root |
1.5 |
|
1441 |
root |
1.65 |
C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL |
1442 |
|
|
module uses the image width (and height) to supply default values. |
1443 |
root |
1.27 |
|
1444 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html> |
1445 |
|
|
|
1446 |
root |
1.59 |
=item $ev = $queue->write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
1447 |
root |
1.5 |
|
1448 |
root |
1.65 |
C<$row_pitch> (and C<$slice_pitch>) can be C<0>, in which case the OpenCL |
1449 |
|
|
module uses the image width (and height) to supply default values. |
1450 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html> |
1451 |
|
|
|
1452 |
root |
1.59 |
=item $ev = $queue->copy_image ($src_image, $dst_image, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...) |
1453 |
root |
1.5 |
|
1454 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html> |
1455 |
|
|
|
1456 |
root |
1.59 |
=item $ev = $queue->copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...) |
1457 |
root |
1.5 |
|
1458 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html> |
1459 |
|
|
|
1460 |
root |
1.59 |
=item $ev = $queue->copy_buffer_rect ($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...) |
1461 |
root |
1.27 |
|
1462 |
|
|
Yeah. |
1463 |
|
|
|
1464 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>. |
1465 |
|
|
|
1466 |
root |
1.59 |
=item $ev = $queue->fill_buffer ($mem, $pattern, $offset, $size, ...) |
1467 |
root |
1.52 |
|
1468 |
|
|
Fills the given buffer object with repeated applications of C<$pattern>, |
1469 |
|
|
starting at C<$offset> for C<$size> octets. |
1470 |
|
|
|
1471 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillBuffer.html> |
1472 |
|
|
|
1473 |
root |
1.59 |
=item $ev = $queue->fill_image ($img, $r, $g, $b, $a, $x, $y, $z, $width, $height, $depth, ...) |
1474 |
root |
1.52 |
|
1475 |
|
|
Fills the given image area with the given rgba colour components. The |
1476 |
|
|
components are normally floating point values between C<0> and C<1>, |
1477 |
|
|
except when the image channel data type is a signe dor unsigned |
1478 |
|
|
unnormalised format, in which case the range is determined by the format. |
1479 |
|
|
|
1480 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueFillImage.html> |
1481 |
|
|
|
1482 |
root |
1.59 |
=item $ev = $queue->task ($kernel, $wait_events...) |
1483 |
root |
1.5 |
|
1484 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueTask.html> |
1485 |
|
|
|
1486 |
root |
1.59 |
=item $ev = $queue->nd_range_kernel ($kernel, \@global_work_offset, \@global_work_size, \@local_work_size, $wait_events...) |
1487 |
root |
1.5 |
|
1488 |
|
|
Enqueues a kernel execution. |
1489 |
|
|
|
1490 |
root |
1.57 |
\@global_work_size must be specified as a reference to an array of |
1491 |
root |
1.5 |
integers specifying the work sizes (element counts). |
1492 |
|
|
|
1493 |
root |
1.57 |
\@global_work_offset must be either C<undef> (in which case all offsets |
1494 |
root |
1.5 |
are C<0>), or a reference to an array of work offsets, with the same number |
1495 |
root |
1.57 |
of elements as \@global_work_size. |
1496 |
root |
1.5 |
|
1497 |
root |
1.57 |
\@local_work_size must be either C<undef> (in which case the |
1498 |
root |
1.5 |
implementation is supposed to choose good local work sizes), or a |
1499 |
|
|
reference to an array of local work sizes, with the same number of |
1500 |
root |
1.57 |
elements as \@global_work_size. |
1501 |
root |
1.5 |
|
1502 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html> |
1503 |
|
|
|
1504 |
root |
1.71 |
=item $ev = $queue->migrate_mem_objects (\@mem_objects, $flags, $wait_events...) |
1505 |
|
|
|
1506 |
|
|
Migrates a number of OpenCL::Memory objects to or from the device. |
1507 |
|
|
|
1508 |
|
|
flags: OpenCL::MIGRATE_MEM_OBJECT_HOST, OpenCL::MIGRATE_MEM_OBJECT_CONTENT_UNDEFINED |
1509 |
|
|
|
1510 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMigrateMemObjects.html> |
1511 |
|
|
|
1512 |
root |
1.59 |
=item $ev = $queue->acquire_gl_objects ([object, ...], $wait_events...) |
1513 |
root |
1.35 |
|
1514 |
|
|
Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired |
1515 |
|
|
for subsequent OpenCL usage. |
1516 |
|
|
|
1517 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html> |
1518 |
|
|
|
1519 |
root |
1.59 |
=item $ev = $queue->release_gl_objects ([object, ...], $wait_events...) |
1520 |
root |
1.35 |
|
1521 |
|
|
Enqueues a list (an array-ref of OpenCL::Memory objects) to be released |
1522 |
|
|
for subsequent OpenGL usage. |
1523 |
|
|
|
1524 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html> |
1525 |
|
|
|
1526 |
root |
1.59 |
=item $ev = $queue->wait_for_events ($wait_events...) |
1527 |
root |
1.5 |
|
1528 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html> |
1529 |
|
|
|
1530 |
root |
1.59 |
=item $ev = $queue->marker ($wait_events...) |
1531 |
root |
1.46 |
|
1532 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueMarkerWithWaitList.html> |
1533 |
|
|
|
1534 |
root |
1.59 |
=item $ev = $queue->barrier ($wait_events...) |
1535 |
root |
1.5 |
|
1536 |
root |
1.46 |
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clEnqueueBarrierWithWaitList.html> |
1537 |
root |
1.5 |
|
1538 |
|
|
=item $queue->flush |
1539 |
|
|
|
1540 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFlush.html> |
1541 |
|
|
|
1542 |
|
|
=item $queue->finish |
1543 |
|
|
|
1544 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clFinish.html> |
1545 |
|
|
|
1546 |
root |
1.21 |
=item $packed_value = $queue->info ($name) |
1547 |
|
|
|
1548 |
|
|
See C<< $platform->info >> for details. |
1549 |
|
|
|
1550 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetCommandQueueInfo.html> |
1551 |
|
|
|
1552 |
|
|
=for gengetinfo begin command_queue |
1553 |
|
|
|
1554 |
|
|
=item $ctx = $command_queue->context |
1555 |
|
|
|
1556 |
root |
1.71 |
Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_CONTEXT> and returns the result. |
1557 |
root |
1.21 |
|
1558 |
|
|
=item $device = $command_queue->device |
1559 |
|
|
|
1560 |
root |
1.71 |
Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_DEVICE> and returns the result. |
1561 |
root |
1.21 |
|
1562 |
|
|
=item $uint = $command_queue->reference_count |
1563 |
|
|
|
1564 |
root |
1.71 |
Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_REFERENCE_COUNT> and returns the result. |
1565 |
root |
1.21 |
|
1566 |
|
|
=item $command_queue_properties = $command_queue->properties |
1567 |
|
|
|
1568 |
root |
1.71 |
Calls C<clGetCommandQueueInfo> with C<OpenCL::QUEUE_PROPERTIES> and returns the result. |
1569 |
root |
1.21 |
|
1570 |
|
|
=for gengetinfo end command_queue |
1571 |
|
|
|
1572 |
root |
1.5 |
=back |
1573 |
|
|
|
1574 |
root |
1.66 |
=head3 MEMORY MAPPED BUFFERS |
1575 |
|
|
|
1576 |
|
|
OpenCL allows you to map buffers and images to host memory (read: perl |
1577 |
|
|
scalars). This is done much like reading or copying a buffer, by enqueuing |
1578 |
|
|
a map or unmap operation on the command queue. |
1579 |
|
|
|
1580 |
root |
1.69 |
The map operations return an C<OpenCL::Mapped> object - see L<THE |
1581 |
root |
1.66 |
OpenCL::Mapped CLASS> section for details on what to do with these |
1582 |
|
|
objects. |
1583 |
|
|
|
1584 |
|
|
The object will be unmapped automatically when the mapped object is |
1585 |
|
|
destroyed (you can use a barrier to make sure the unmap has finished, |
1586 |
|
|
before using the buffer in a kernel), but you can also enqueue an unmap |
1587 |
|
|
operation manually. |
1588 |
|
|
|
1589 |
|
|
=over 4 |
1590 |
|
|
|
1591 |
root |
1.69 |
=item $mapped_buffer = $queue->map_buffer ($buf, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $offset=0, $size=undef, $wait_events...) |
1592 |
root |
1.66 |
|
1593 |
root |
1.69 |
Maps the given buffer into host memory and returns an |
1594 |
|
|
C<OpenCL::MappedBuffer> object. If C<$size> is specified as undef, then |
1595 |
|
|
the map will extend to the end of the buffer. |
1596 |
root |
1.66 |
|
1597 |
root |
1.71 |
map_flags: OpenCL::MAP_READ, OpenCL::MAP_WRITE, OpenCL::MAP_WRITE_INVALIDATE_REGION. |
1598 |
|
|
|
1599 |
root |
1.66 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapBuffer.html> |
1600 |
|
|
|
1601 |
root |
1.69 |
Example: map the buffer $buf fully and replace the first 4 bytes by "abcd", then unmap. |
1602 |
|
|
|
1603 |
|
|
{ |
1604 |
|
|
my $mapped = $queue->map_buffer ($buf, 1, OpenCL::MAP_WRITE); |
1605 |
|
|
substr $$mapped, 0, 4, "abcd"; |
1606 |
|
|
} # asynchronously unmap because $mapped is destroyed |
1607 |
root |
1.66 |
|
1608 |
root |
1.69 |
=item $mapped_image = $queue->map_image ($img, $blocking=1, $map_flags=OpenCL::MAP_READ|OpenCL::MAP_WRITE, $x=0, $y=0, $z=0, $width=undef, $height=undef, $depth=undef, $wait_events...) |
1609 |
|
|
|
1610 |
|
|
Maps the given image area into host memory and return an |
1611 |
|
|
C<OpenCL::MappedImage> object. |
1612 |
|
|
|
1613 |
|
|
If any of C<$width>, C<$height> and/or C<$depth> are C<undef> then they |
1614 |
|
|
will be replaced by the maximum possible value. |
1615 |
root |
1.66 |
|
1616 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapImage.html> |
1617 |
|
|
|
1618 |
root |
1.69 |
Example: map an image (with OpenCL::UNSIGNED_INT8 channel type) and set |
1619 |
|
|
the first channel of the leftmost column to 5, then explicitly unmap |
1620 |
|
|
it. You are not necessarily meant to do it this way, this example just |
1621 |
|
|
shows you the accessors to use :) |
1622 |
|
|
|
1623 |
|
|
my $mapped = $queue->map_image ($image, 1, OpenCL::MAP_WRITE); |
1624 |
|
|
|
1625 |
root |
1.84 |
$mapped->write ($_ * $mapped->row_pitch, pack "C", 5) |
1626 |
|
|
for 0 .. $mapped->height - 1; |
1627 |
root |
1.69 |
|
1628 |
|
|
$mapped->unmap;. |
1629 |
|
|
$mapped->wait; # only needed for out of order queues normally |
1630 |
|
|
|
1631 |
root |
1.66 |
=item $ev = $queue->unmap ($mapped, $wait_events...) |
1632 |
|
|
|
1633 |
|
|
Unmaps the data from host memory. You must not call any methods that |
1634 |
|
|
modify the data, or modify the data scalar directly, after calling this |
1635 |
|
|
method. |
1636 |
|
|
|
1637 |
|
|
The mapped event object will always be passed as part of the |
1638 |
|
|
$wait_events. The mapped event object will be replaced by the new event |
1639 |
|
|
object that this request creates. |
1640 |
|
|
|
1641 |
|
|
=back |
1642 |
|
|
|
1643 |
root |
1.5 |
=head2 THE OpenCL::Memory CLASS |
1644 |
|
|
|
1645 |
|
|
This the superclass of all memory objects - OpenCL::Buffer, OpenCL::Image, |
1646 |
root |
1.21 |
OpenCL::Image2D and OpenCL::Image3D. |
1647 |
root |
1.5 |
|
1648 |
|
|
=over 4 |
1649 |
|
|
|
1650 |
|
|
=item $packed_value = $memory->info ($name) |
1651 |
|
|
|
1652 |
|
|
See C<< $platform->info >> for details. |
1653 |
|
|
|
1654 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html> |
1655 |
|
|
|
1656 |
root |
1.83 |
=item $memory->destructor_callback ($cb->()) |
1657 |
|
|
|
1658 |
|
|
Sets a callback that will be invoked after the memory object is destructed. |
1659 |
|
|
|
1660 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetMemObjectDestructorCallback.html> |
1661 |
|
|
|
1662 |
root |
1.21 |
=for gengetinfo begin mem |
1663 |
|
|
|
1664 |
|
|
=item $mem_object_type = $mem->type |
1665 |
|
|
|
1666 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_TYPE> and returns the result. |
1667 |
root |
1.21 |
|
1668 |
|
|
=item $mem_flags = $mem->flags |
1669 |
|
|
|
1670 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_FLAGS> and returns the result. |
1671 |
root |
1.21 |
|
1672 |
|
|
=item $int = $mem->size |
1673 |
|
|
|
1674 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_SIZE> and returns the result. |
1675 |
root |
1.21 |
|
1676 |
|
|
=item $ptr_value = $mem->host_ptr |
1677 |
|
|
|
1678 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_HOST_PTR> and returns the result. |
1679 |
root |
1.21 |
|
1680 |
|
|
=item $uint = $mem->map_count |
1681 |
|
|
|
1682 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_MAP_COUNT> and returns the result. |
1683 |
root |
1.21 |
|
1684 |
|
|
=item $uint = $mem->reference_count |
1685 |
|
|
|
1686 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_REFERENCE_COUNT> and returns the result. |
1687 |
root |
1.21 |
|
1688 |
|
|
=item $ctx = $mem->context |
1689 |
|
|
|
1690 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_CONTEXT> and returns the result. |
1691 |
root |
1.21 |
|
1692 |
|
|
=item $mem = $mem->associated_memobject |
1693 |
|
|
|
1694 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_ASSOCIATED_MEMOBJECT> and returns the result. |
1695 |
root |
1.21 |
|
1696 |
|
|
=item $int = $mem->offset |
1697 |
|
|
|
1698 |
root |
1.71 |
Calls C<clGetMemObjectInfo> with C<OpenCL::MEM_OFFSET> and returns the result. |
1699 |
root |
1.21 |
|
1700 |
|
|
=for gengetinfo end mem |
1701 |
|
|
|
1702 |
root |
1.34 |
=item ($type, $name) = $mem->gl_object_info |
1703 |
|
|
|
1704 |
|
|
Returns the OpenGL object type (e.g. OpenCL::GL_OBJECT_TEXTURE2D) and the |
1705 |
|
|
object "name" (e.g. the texture name) used to create this memory object. |
1706 |
|
|
|
1707 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetGLObjectInfo.html> |
1708 |
|
|
|
1709 |
root |
1.5 |
=back |
1710 |
|
|
|
1711 |
root |
1.27 |
=head2 THE OpenCL::Buffer CLASS |
1712 |
|
|
|
1713 |
|
|
This is a subclass of OpenCL::Memory, and the superclass of |
1714 |
|
|
OpenCL::BufferObj. Its purpose is simply to distinguish between buffers |
1715 |
|
|
and sub-buffers. |
1716 |
|
|
|
1717 |
|
|
=head2 THE OpenCL::BufferObj CLASS |
1718 |
|
|
|
1719 |
|
|
This is a subclass of OpenCL::Buffer and thus OpenCL::Memory. It exists |
1720 |
|
|
because one cna create sub buffers of OpenLC::BufferObj objects, but not |
1721 |
|
|
sub buffers from these sub buffers. |
1722 |
|
|
|
1723 |
|
|
=over 4 |
1724 |
|
|
|
1725 |
|
|
=item $subbuf = $buf_obj->sub_buffer_region ($flags, $origin, $size) |
1726 |
|
|
|
1727 |
|
|
Creates an OpenCL::Buffer objects from this buffer and returns it. The |
1728 |
root |
1.79 |
C<buffer_create_type> is assumed to be C<OpenCL::BUFFER_CREATE_TYPE_REGION>. |
1729 |
root |
1.27 |
|
1730 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateSubBuffer.html> |
1731 |
|
|
|
1732 |
|
|
=back |
1733 |
|
|
|
1734 |
root |
1.20 |
=head2 THE OpenCL::Image CLASS |
1735 |
|
|
|
1736 |
root |
1.47 |
This is the superclass of all image objects - OpenCL::Image1D, |
1737 |
|
|
OpenCL::Image1DArray, OpenCL::Image1DBuffer, OpenCL::Image2D, |
1738 |
|
|
OpenCL::Image2DArray and OpenCL::Image3D. |
1739 |
root |
1.20 |
|
1740 |
|
|
=over 4 |
1741 |
|
|
|
1742 |
root |
1.53 |
=item $packed_value = $image->image_info ($name) |
1743 |
root |
1.20 |
|
1744 |
|
|
See C<< $platform->info >> for details. |
1745 |
|
|
|
1746 |
|
|
The reason this method is not called C<info> is that there already is an |
1747 |
|
|
C<< ->info >> method inherited from C<OpenCL::Memory>. |
1748 |
|
|
|
1749 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html> |
1750 |
|
|
|
1751 |
root |
1.53 |
=item ($channel_order, $channel_data_type) = $image->format |
1752 |
|
|
|
1753 |
|
|
Returns the channel order and type used to create the image by calling |
1754 |
root |
1.79 |
C<clGetImageInfo> with C<OpenCL::IMAGE_FORMAT>. |
1755 |
root |
1.53 |
|
1756 |
root |
1.21 |
=for gengetinfo begin image |
1757 |
|
|
|
1758 |
|
|
=item $int = $image->element_size |
1759 |
|
|
|
1760 |
root |
1.71 |
Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ELEMENT_SIZE> and returns the result. |
1761 |
root |
1.21 |
|
1762 |
|
|
=item $int = $image->row_pitch |
1763 |
|
|
|
1764 |
root |
1.71 |
Calls C<clGetImageInfo> with C<OpenCL::IMAGE_ROW_PITCH> and returns the result. |
1765 |
root |
1.21 |
|
1766 |
|
|
=item $int = $image->slice_pitch |
1767 |
|
|
|
1768 |
root |
1.71 |
Calls C<clGetImageInfo> with C<OpenCL::IMAGE_SLICE_PITCH> and returns the result. |
1769 |
root |
1.21 |
|
1770 |
|
|
=item $int = $image->width |
1771 |
|
|
|
1772 |
root |
1.71 |
Calls C<clGetImageInfo> with C<OpenCL::IMAGE_WIDTH> and returns the result. |
1773 |
root |
1.21 |
|
1774 |
|
|
=item $int = $image->height |
1775 |
|
|
|
1776 |
root |
1.71 |
Calls C<clGetImageInfo> with C<OpenCL::IMAGE_HEIGHT> and returns the result. |
1777 |
root |
1.21 |
|
1778 |
|
|
=item $int = $image->depth |
1779 |
|
|
|
1780 |
root |
1.71 |
Calls C<clGetImageInfo> with C<OpenCL::IMAGE_DEPTH> and returns the result. |
1781 |
root |
1.21 |
|
1782 |
|
|
=for gengetinfo end image |
1783 |
|
|
|
1784 |
root |
1.34 |
=for gengetinfo begin gl_texture |
1785 |
|
|
|
1786 |
|
|
=item $GLenum = $gl_texture->target |
1787 |
|
|
|
1788 |
root |
1.71 |
Calls C<clGetGLTextureInfo> with C<OpenCL::GL_TEXTURE_TARGET> and returns the result. |
1789 |
root |
1.34 |
|
1790 |
|
|
=item $GLint = $gl_texture->gl_mipmap_level |
1791 |
|
|
|
1792 |
root |
1.71 |
Calls C<clGetGLTextureInfo> with C<OpenCL::GL_MIPMAP_LEVEL> and returns the result. |
1793 |
root |
1.34 |
|
1794 |
|
|
=for gengetinfo end gl_texture |
1795 |
|
|
|
1796 |
root |
1.20 |
=back |
1797 |
|
|
|
1798 |
root |
1.5 |
=head2 THE OpenCL::Sampler CLASS |
1799 |
|
|
|
1800 |
|
|
=over 4 |
1801 |
|
|
|
1802 |
|
|
=item $packed_value = $sampler->info ($name) |
1803 |
|
|
|
1804 |
|
|
See C<< $platform->info >> for details. |
1805 |
|
|
|
1806 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetSamplerInfo.html> |
1807 |
|
|
|
1808 |
root |
1.21 |
=for gengetinfo begin sampler |
1809 |
|
|
|
1810 |
|
|
=item $uint = $sampler->reference_count |
1811 |
|
|
|
1812 |
root |
1.71 |
Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_REFERENCE_COUNT> and returns the result. |
1813 |
root |
1.21 |
|
1814 |
|
|
=item $ctx = $sampler->context |
1815 |
|
|
|
1816 |
root |
1.71 |
Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_CONTEXT> and returns the result. |
1817 |
root |
1.21 |
|
1818 |
|
|
=item $addressing_mode = $sampler->normalized_coords |
1819 |
|
|
|
1820 |
root |
1.71 |
Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_NORMALIZED_COORDS> and returns the result. |
1821 |
root |
1.21 |
|
1822 |
|
|
=item $filter_mode = $sampler->addressing_mode |
1823 |
|
|
|
1824 |
root |
1.71 |
Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_ADDRESSING_MODE> and returns the result. |
1825 |
root |
1.21 |
|
1826 |
|
|
=item $boolean = $sampler->filter_mode |
1827 |
|
|
|
1828 |
root |
1.71 |
Calls C<clGetSamplerInfo> with C<OpenCL::SAMPLER_FILTER_MODE> and returns the result. |
1829 |
root |
1.21 |
|
1830 |
|
|
=for gengetinfo end sampler |
1831 |
|
|
|
1832 |
root |
1.5 |
=back |
1833 |
|
|
|
1834 |
|
|
=head2 THE OpenCL::Program CLASS |
1835 |
|
|
|
1836 |
|
|
=over 4 |
1837 |
|
|
|
1838 |
root |
1.55 |
=item $program->build (\@devices = undef, $options = "", $cb->($program) = undef) |
1839 |
root |
1.5 |
|
1840 |
root |
1.51 |
Tries to build the program with the given options. See also the |
1841 |
|
|
C<$ctx->build> convenience function. |
1842 |
root |
1.5 |
|
1843 |
root |
1.55 |
If a callback is specified, then it will be called when compilation is |
1844 |
|
|
finished. Note that many OpenCL implementations block your program while |
1845 |
|
|
compiling whether you use a callback or not. See C<build_async> if you |
1846 |
|
|
want to make sure the build is done in the background. |
1847 |
|
|
|
1848 |
root |
1.63 |
Note that some OpenCL implementations act up badly, and don't call the |
1849 |
root |
1.55 |
callback in some error cases (but call it in others). This implementation |
1850 |
|
|
assumes the callback will always be called, and leaks memory if this is |
1851 |
|
|
not so. So best make sure you don't pass in invalid values. |
1852 |
|
|
|
1853 |
root |
1.63 |
Some implementations fail with C<OpenCL::INVALID_BINARY> when the |
1854 |
|
|
compilation state is successful but some later stage fails. |
1855 |
|
|
|
1856 |
root |
1.71 |
options: C<-D name>, C<-D name=definition>, C<-I dir>, |
1857 |
|
|
C<-cl-single-precision-constant>, C<-cl-denorms-are-zero>, |
1858 |
|
|
C<-cl-fp32-correctly-rounded-divide-sqrt>, C<-cl-opt-disable>, |
1859 |
|
|
C<-cl-mad-enable>, C<-cl-no-signed-zeros>, C<-cl-unsafe-math-optimizations>, |
1860 |
|
|
C<-cl-finite-math-only>, C<-cl-fast-relaxed-math>, |
1861 |
|
|
C<-w>, C<-Werror>, C<-cl-std=CL1.1/CL1.2>, C<-cl-kernel-arg-info>, |
1862 |
|
|
C<-create-library>, C<-enable-link-options>. |
1863 |
|
|
|
1864 |
root |
1.75 |
build_status: OpenCL::BUILD_SUCCESS, OpenCL::BUILD_NONE, |
1865 |
|
|
OpenCL::BUILD_ERROR, OpenCL::BUILD_IN_PROGRESS. |
1866 |
|
|
|
1867 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clBuildProgram.html> |
1868 |
|
|
|
1869 |
root |
1.55 |
=item $program->build_async (\@devices = undef, $options = "", $cb->($program) = undef) |
1870 |
|
|
|
1871 |
|
|
Similar to C<< ->build >>, except it starts a thread, and never fails (you |
1872 |
|
|
need to check the compilation status form the callback, or by polling). |
1873 |
|
|
|
1874 |
root |
1.75 |
=item $program->compile (\@devices = undef, $options = "", \%headers = undef, $cb->($program) = undef) |
1875 |
|
|
|
1876 |
|
|
Compiles the given program for the given devices (or all devices if |
1877 |
|
|
undef). If C<$headers> is given, it must be a hashref with include name => |
1878 |
|
|
OpenCL::Program pairs. |
1879 |
|
|
|
1880 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clCompileProgram.html> |
1881 |
root |
1.72 |
|
1882 |
root |
1.5 |
=item $packed_value = $program->build_info ($device, $name) |
1883 |
|
|
|
1884 |
|
|
Similar to C<< $platform->info >>, but returns build info for a previous |
1885 |
|
|
build attempt for the given device. |
1886 |
|
|
|
1887 |
root |
1.78 |
binary_type: OpenCL::PROGRAM_BINARY_TYPE_NONE, |
1888 |
|
|
OpenCL::PROGRAM_BINARY_TYPE_COMPILED_OBJECT, |
1889 |
|
|
OpenCL::PROGRAM_BINARY_TYPE_LIBRARY, |
1890 |
|
|
OpenCL::PROGRAM_BINARY_TYPE_EXECUTABLE. |
1891 |
|
|
|
1892 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetBuildInfo.html> |
1893 |
|
|
|
1894 |
|
|
=item $kernel = $program->kernel ($function_name) |
1895 |
|
|
|
1896 |
|
|
Creates an OpenCL::Kernel object out of the named C<__kernel> function in |
1897 |
|
|
the program. |
1898 |
|
|
|
1899 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernel.html> |
1900 |
|
|
|
1901 |
root |
1.50 |
=item @kernels = $program->kernels_in_program |
1902 |
|
|
|
1903 |
|
|
Returns all kernels successfully compiled for all devices in program. |
1904 |
|
|
|
1905 |
|
|
http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateKernelsInProgram.html |
1906 |
|
|
|
1907 |
root |
1.21 |
=for gengetinfo begin program_build |
1908 |
|
|
|
1909 |
|
|
=item $build_status = $program->build_status ($device) |
1910 |
|
|
|
1911 |
root |
1.71 |
Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_STATUS> and returns the result. |
1912 |
|
|
|
1913 |
root |
1.21 |
=item $string = $program->build_options ($device) |
1914 |
|
|
|
1915 |
root |
1.71 |
Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_OPTIONS> and returns the result. |
1916 |
root |
1.21 |
|
1917 |
|
|
=item $string = $program->build_log ($device) |
1918 |
|
|
|
1919 |
root |
1.71 |
Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BUILD_LOG> and returns the result. |
1920 |
root |
1.21 |
|
1921 |
root |
1.79 |
=item $binary_type = $program->binary_type ($device) |
1922 |
|
|
|
1923 |
|
|
Calls C<clGetProgramBuildInfo> with C<OpenCL::PROGRAM_BINARY_TYPE> and returns the result. |
1924 |
|
|
|
1925 |
root |
1.21 |
=for gengetinfo end program_build |
1926 |
|
|
|
1927 |
|
|
=item $packed_value = $program->info ($name) |
1928 |
|
|
|
1929 |
|
|
See C<< $platform->info >> for details. |
1930 |
|
|
|
1931 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html> |
1932 |
|
|
|
1933 |
|
|
=for gengetinfo begin program |
1934 |
|
|
|
1935 |
|
|
=item $uint = $program->reference_count |
1936 |
|
|
|
1937 |
root |
1.71 |
Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_REFERENCE_COUNT> and returns the result. |
1938 |
root |
1.21 |
|
1939 |
|
|
=item $ctx = $program->context |
1940 |
|
|
|
1941 |
root |
1.71 |
Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_CONTEXT> and returns the result. |
1942 |
root |
1.21 |
|
1943 |
|
|
=item $uint = $program->num_devices |
1944 |
|
|
|
1945 |
root |
1.71 |
Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_NUM_DEVICES> and returns the result. |
1946 |
root |
1.21 |
|
1947 |
|
|
=item @devices = $program->devices |
1948 |
|
|
|
1949 |
root |
1.71 |
Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_DEVICES> and returns the result. |
1950 |
root |
1.21 |
|
1951 |
|
|
=item $string = $program->source |
1952 |
|
|
|
1953 |
root |
1.71 |
Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_SOURCE> and returns the result. |
1954 |
root |
1.21 |
|
1955 |
|
|
=item @ints = $program->binary_sizes |
1956 |
|
|
|
1957 |
root |
1.71 |
Calls C<clGetProgramInfo> with C<OpenCL::PROGRAM_BINARY_SIZES> and returns the result. |
1958 |
root |
1.21 |
|
1959 |
|
|
=for gengetinfo end program |
1960 |
|
|
|
1961 |
root |
1.23 |
=item @blobs = $program->binaries |
1962 |
|
|
|
1963 |
|
|
Returns a string for the compiled binary for every device associated with |
1964 |
|
|
the program, empty strings indicate missing programs, and an empty result |
1965 |
|
|
means no program binaries are available. |
1966 |
|
|
|
1967 |
|
|
These "binaries" are often, in fact, informative low-level assembly |
1968 |
|
|
sources. |
1969 |
|
|
|
1970 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProgramInfo.html> |
1971 |
|
|
|
1972 |
root |
1.5 |
=back |
1973 |
|
|
|
1974 |
|
|
=head2 THE OpenCL::Kernel CLASS |
1975 |
|
|
|
1976 |
|
|
=over 4 |
1977 |
|
|
|
1978 |
|
|
=item $packed_value = $kernel->info ($name) |
1979 |
|
|
|
1980 |
|
|
See C<< $platform->info >> for details. |
1981 |
|
|
|
1982 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html> |
1983 |
|
|
|
1984 |
root |
1.21 |
=for gengetinfo begin kernel |
1985 |
|
|
|
1986 |
|
|
=item $string = $kernel->function_name |
1987 |
|
|
|
1988 |
root |
1.71 |
Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_FUNCTION_NAME> and returns the result. |
1989 |
root |
1.21 |
|
1990 |
|
|
=item $uint = $kernel->num_args |
1991 |
|
|
|
1992 |
root |
1.71 |
Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_NUM_ARGS> and returns the result. |
1993 |
root |
1.21 |
|
1994 |
|
|
=item $uint = $kernel->reference_count |
1995 |
|
|
|
1996 |
root |
1.71 |
Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_REFERENCE_COUNT> and returns the result. |
1997 |
root |
1.21 |
|
1998 |
|
|
=item $ctx = $kernel->context |
1999 |
|
|
|
2000 |
root |
1.71 |
Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_CONTEXT> and returns the result. |
2001 |
root |
1.21 |
|
2002 |
|
|
=item $program = $kernel->program |
2003 |
|
|
|
2004 |
root |
1.71 |
Calls C<clGetKernelInfo> with C<OpenCL::KERNEL_PROGRAM> and returns the result. |
2005 |
root |
1.21 |
|
2006 |
|
|
=for gengetinfo end kernel |
2007 |
|
|
|
2008 |
root |
1.20 |
=item $packed_value = $kernel->work_group_info ($device, $name) |
2009 |
|
|
|
2010 |
|
|
See C<< $platform->info >> for details. |
2011 |
|
|
|
2012 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html> |
2013 |
|
|
|
2014 |
root |
1.21 |
=for gengetinfo begin kernel_work_group |
2015 |
|
|
|
2016 |
|
|
=item $int = $kernel->work_group_size ($device) |
2017 |
|
|
|
2018 |
root |
1.71 |
Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_WORK_GROUP_SIZE> and returns the result. |
2019 |
root |
1.21 |
|
2020 |
|
|
=item @ints = $kernel->compile_work_group_size ($device) |
2021 |
|
|
|
2022 |
root |
1.71 |
Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_COMPILE_WORK_GROUP_SIZE> and returns the result. |
2023 |
root |
1.21 |
|
2024 |
|
|
=item $ulong = $kernel->local_mem_size ($device) |
2025 |
|
|
|
2026 |
root |
1.71 |
Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_LOCAL_MEM_SIZE> and returns the result. |
2027 |
root |
1.21 |
|
2028 |
|
|
=item $int = $kernel->preferred_work_group_size_multiple ($device) |
2029 |
|
|
|
2030 |
root |
1.71 |
Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PREFERRED_WORK_GROUP_SIZE_MULTIPLE> and returns the result. |
2031 |
root |
1.21 |
|
2032 |
|
|
=item $ulong = $kernel->private_mem_size ($device) |
2033 |
|
|
|
2034 |
root |
1.71 |
Calls C<clGetKernelWorkGroupInfo> with C<OpenCL::KERNEL_PRIVATE_MEM_SIZE> and returns the result. |
2035 |
root |
1.21 |
|
2036 |
|
|
=for gengetinfo end kernel_work_group |
2037 |
|
|
|
2038 |
root |
1.73 |
=item $packed_value = $kernel->arg_info ($idx, $name) |
2039 |
|
|
|
2040 |
|
|
See C<< $platform->info >> for details. |
2041 |
|
|
|
2042 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.2/docs/man/xhtml/clGetKernelArgInfo.html> |
2043 |
|
|
|
2044 |
|
|
=for gengetinfo begin kernel_arg |
2045 |
|
|
|
2046 |
|
|
=item $kernel_arg_address_qualifier = $kernel->arg_address_qualifier ($idx) |
2047 |
|
|
|
2048 |
|
|
Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ADDRESS_QUALIFIER> and returns the result. |
2049 |
|
|
|
2050 |
|
|
=item $kernel_arg_access_qualifier = $kernel->arg_access_qualifier ($idx) |
2051 |
|
|
|
2052 |
|
|
Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_ACCESS_QUALIFIER> and returns the result. |
2053 |
|
|
|
2054 |
|
|
=item $string = $kernel->arg_type_name ($idx) |
2055 |
|
|
|
2056 |
|
|
Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_NAME> and returns the result. |
2057 |
|
|
|
2058 |
|
|
=item $kernel_arg_type_qualifier = $kernel->arg_type_qualifier ($idx) |
2059 |
|
|
|
2060 |
|
|
Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_TYPE_QUALIFIER> and returns the result. |
2061 |
|
|
|
2062 |
|
|
=item $string = $kernel->arg_name ($idx) |
2063 |
|
|
|
2064 |
|
|
Calls C<clGetKernelArgInfo> with C<OpenCL::KERNEL_ARG_NAME> and returns the result. |
2065 |
root |
1.72 |
|
2066 |
root |
1.73 |
=for gengetinfo end kernel_arg |
2067 |
root |
1.72 |
|
2068 |
root |
1.60 |
=item $kernel->setf ($format, ...) |
2069 |
|
|
|
2070 |
|
|
Sets the arguments of a kernel. Since OpenCL 1.1 doesn't have a generic |
2071 |
|
|
way to set arguments (and with OpenCL 1.2 it might be rather slow), you |
2072 |
|
|
need to specify a format argument, much as with C<printf>, to tell OpenCL |
2073 |
|
|
what type of argument it is. |
2074 |
|
|
|
2075 |
|
|
The format arguments are single letters: |
2076 |
|
|
|
2077 |
|
|
c char |
2078 |
|
|
C unsigned char |
2079 |
|
|
s short |
2080 |
|
|
S unsigned short |
2081 |
|
|
i int |
2082 |
|
|
I unsigned int |
2083 |
|
|
l long |
2084 |
|
|
L unsigned long |
2085 |
|
|
|
2086 |
|
|
h half float (0..65535) |
2087 |
|
|
f float |
2088 |
|
|
d double |
2089 |
|
|
|
2090 |
|
|
z local (octet size) |
2091 |
|
|
|
2092 |
|
|
m memory object (buffer or image) |
2093 |
|
|
a sampler |
2094 |
|
|
e event |
2095 |
|
|
|
2096 |
|
|
Space characters in the format string are ignored. |
2097 |
|
|
|
2098 |
|
|
Example: set the arguments for a kernel that expects an int, two floats, a buffer and an image. |
2099 |
|
|
|
2100 |
|
|
$kernel->setf ("i ff mm", 5, 0.5, 3, $buffer, $image); |
2101 |
|
|
|
2102 |
root |
1.58 |
=item $kernel->set_TYPE ($index, $value) |
2103 |
root |
1.5 |
|
2104 |
root |
1.58 |
=item $kernel->set_char ($index, $value) |
2105 |
root |
1.5 |
|
2106 |
root |
1.58 |
=item $kernel->set_uchar ($index, $value) |
2107 |
|
|
|
2108 |
|
|
=item $kernel->set_short ($index, $value) |
2109 |
|
|
|
2110 |
|
|
=item $kernel->set_ushort ($index, $value) |
2111 |
|
|
|
2112 |
|
|
=item $kernel->set_int ($index, $value) |
2113 |
|
|
|
2114 |
|
|
=item $kernel->set_uint ($index, $value) |
2115 |
|
|
|
2116 |
|
|
=item $kernel->set_long ($index, $value) |
2117 |
|
|
|
2118 |
|
|
=item $kernel->set_ulong ($index, $value) |
2119 |
|
|
|
2120 |
|
|
=item $kernel->set_half ($index, $value) |
2121 |
|
|
|
2122 |
|
|
=item $kernel->set_float ($index, $value) |
2123 |
|
|
|
2124 |
|
|
=item $kernel->set_double ($index, $value) |
2125 |
|
|
|
2126 |
|
|
=item $kernel->set_memory ($index, $value) |
2127 |
|
|
|
2128 |
|
|
=item $kernel->set_buffer ($index, $value) |
2129 |
|
|
|
2130 |
|
|
=item $kernel->set_image ($index, $value) |
2131 |
|
|
|
2132 |
|
|
=item $kernel->set_sampler ($index, $value) |
2133 |
|
|
|
2134 |
|
|
=item $kernel->set_local ($index, $value) |
2135 |
|
|
|
2136 |
|
|
=item $kernel->set_event ($index, $value) |
2137 |
|
|
|
2138 |
|
|
This is a family of methods to set the kernel argument with the number |
2139 |
|
|
C<$index> to the give C<$value>. |
2140 |
root |
1.5 |
|
2141 |
|
|
Chars and integers (including the half type) are specified as integers, |
2142 |
root |
1.58 |
float and double as floating point values, memory/buffer/image must be |
2143 |
|
|
an object of that type or C<undef>, local-memory arguments are set by |
2144 |
|
|
specifying the size, and sampler and event must be objects of that type. |
2145 |
|
|
|
2146 |
|
|
Note that C<set_memory> works for all memory objects (all types of buffers |
2147 |
|
|
and images) - the main purpose of the more specific C<set_TYPE> functions |
2148 |
|
|
is type checking. |
2149 |
root |
1.5 |
|
2150 |
root |
1.50 |
Setting an argument for a kernel does NOT keep a reference to the object - |
2151 |
|
|
for example, if you set an argument to some image object, free the image, |
2152 |
|
|
and call the kernel, you will run into undefined behaviour. |
2153 |
|
|
|
2154 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html> |
2155 |
|
|
|
2156 |
|
|
=back |
2157 |
|
|
|
2158 |
|
|
=head2 THE OpenCL::Event CLASS |
2159 |
|
|
|
2160 |
|
|
This is the superclass for all event objects (including OpenCL::UserEvent |
2161 |
|
|
objects). |
2162 |
|
|
|
2163 |
|
|
=over 4 |
2164 |
|
|
|
2165 |
root |
1.21 |
=item $ev->wait |
2166 |
|
|
|
2167 |
|
|
Waits for the event to complete. |
2168 |
|
|
|
2169 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
2170 |
|
|
|
2171 |
root |
1.55 |
=item $ev->cb ($exec_callback_type, $callback->($event, $event_command_exec_status)) |
2172 |
|
|
|
2173 |
|
|
Adds a callback to the callback stack for the given event type. There is |
2174 |
|
|
no way to remove a callback again. |
2175 |
|
|
|
2176 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetEventCallback.html> |
2177 |
|
|
|
2178 |
root |
1.5 |
=item $packed_value = $ev->info ($name) |
2179 |
|
|
|
2180 |
|
|
See C<< $platform->info >> for details. |
2181 |
|
|
|
2182 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html> |
2183 |
|
|
|
2184 |
root |
1.21 |
=for gengetinfo begin event |
2185 |
|
|
|
2186 |
|
|
=item $queue = $event->command_queue |
2187 |
|
|
|
2188 |
root |
1.71 |
Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_QUEUE> and returns the result. |
2189 |
root |
1.21 |
|
2190 |
|
|
=item $command_type = $event->command_type |
2191 |
|
|
|
2192 |
root |
1.71 |
Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_TYPE> and returns the result. |
2193 |
root |
1.21 |
|
2194 |
|
|
=item $uint = $event->reference_count |
2195 |
|
|
|
2196 |
root |
1.71 |
Calls C<clGetEventInfo> with C<OpenCL::EVENT_REFERENCE_COUNT> and returns the result. |
2197 |
root |
1.21 |
|
2198 |
|
|
=item $uint = $event->command_execution_status |
2199 |
|
|
|
2200 |
root |
1.71 |
Calls C<clGetEventInfo> with C<OpenCL::EVENT_COMMAND_EXECUTION_STATUS> and returns the result. |
2201 |
root |
1.21 |
|
2202 |
|
|
=item $ctx = $event->context |
2203 |
|
|
|
2204 |
root |
1.71 |
Calls C<clGetEventInfo> with C<OpenCL::EVENT_CONTEXT> and returns the result. |
2205 |
root |
1.21 |
|
2206 |
|
|
=for gengetinfo end event |
2207 |
|
|
|
2208 |
root |
1.20 |
=item $packed_value = $ev->profiling_info ($name) |
2209 |
|
|
|
2210 |
|
|
See C<< $platform->info >> for details. |
2211 |
|
|
|
2212 |
|
|
The reason this method is not called C<info> is that there already is an |
2213 |
|
|
C<< ->info >> method. |
2214 |
|
|
|
2215 |
|
|
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProfilingInfo.html> |
2216 |
|
|
|
2217 |
root |
1.21 |
=for gengetinfo begin profiling |
2218 |
|
|
|
2219 |
|
|
=item $ulong = $event->profiling_command_queued |
2220 |
|
|
|
2221 |
root |
1.71 |
Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_QUEUED> and returns the result. |
2222 |
root |
1.21 |
|
2223 |
|
|
=item $ulong = $event->profiling_command_submit |
2224 |
|
|
|
2225 |
root |
1.71 |
Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_SUBMIT> and returns the result. |
2226 |
root |
1.21 |
|
2227 |
|
|
=item $ulong = $event->profiling_command_start |
2228 |
|
|
|
2229 |
root |
1.71 |
Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_START> and returns the result. |
2230 |
root |
1.21 |
|
2231 |
|
|
=item $ulong = $event->profiling_command_end |
2232 |
root |
1.5 |
|
2233 |
root |
1.71 |
Calls C<clGetEventProfilingInfo> with C<OpenCL::PROFILING_COMMAND_END> and returns the result. |
2234 |
root |
1.5 |
|
2235 |
root |
1.21 |
=for gengetinfo end profiling |
2236 |
root |
1.5 |
|
2237 |
|
|
=back |
2238 |
|
|
|
2239 |
|
|
=head2 THE OpenCL::UserEvent CLASS |
2240 |
|
|
|
2241 |
|
|
This is a subclass of OpenCL::Event. |
2242 |
root |
1.4 |
|
2243 |
root |
1.1 |
=over 4 |
2244 |
|
|
|
2245 |
root |
1.5 |
=item $ev->set_status ($execution_status) |
2246 |
|
|
|
2247 |
root |
1.55 |
Sets the execution status of the user event. Can only be called once, |
2248 |
|
|
either with OpenCL::COMPLETE or a negative number as status. |
2249 |
|
|
|
2250 |
root |
1.71 |
execution_status: OpenCL::COMPLETE or a negative integer. |
2251 |
|
|
|
2252 |
root |
1.5 |
L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetUserEventStatus.html> |
2253 |
|
|
|
2254 |
|
|
=back |
2255 |
|
|
|
2256 |
root |
1.66 |
=head2 THE OpenCL::Mapped CLASS |
2257 |
|
|
|
2258 |
|
|
This class represents objects mapped into host memory. They are |
2259 |
|
|
represented by a blessed string scalar. The string data is the mapped |
2260 |
|
|
memory area, that is, if you read or write it, then the mapped object is |
2261 |
|
|
accessed directly. |
2262 |
|
|
|
2263 |
|
|
You must only ever use operations that modify the string in-place - for |
2264 |
|
|
example, a C<substr> that doesn't change the length, or maybe a regex that |
2265 |
|
|
doesn't change the length. Any other operation might cause the data to be |
2266 |
|
|
copied. |
2267 |
|
|
|
2268 |
|
|
When the object is destroyed it will enqueue an implicit unmap operation |
2269 |
|
|
on the queue that was used to create it. |
2270 |
|
|
|
2271 |
root |
1.67 |
Keep in mind that you I<need> to unmap (or destroy) mapped objects before |
2272 |
|
|
OpenCL sees the changes, even if some implementations don't need this |
2273 |
|
|
sometimes. |
2274 |
|
|
|
2275 |
root |
1.66 |
Example, replace the first two floats in the mapped buffer by 1 and 2. |
2276 |
|
|
|
2277 |
|
|
my $mapped = $queue->map_buffer ($buf, ... |
2278 |
|
|
$mapped->event->wait; # make sure it's there |
2279 |
|
|
|
2280 |
|
|
# now replace first 8 bytes by new data, which is exactly 8 bytes long |
2281 |
|
|
# we blindly assume device endianness to equal host endianness |
2282 |
|
|
# (and of course, we assume iee 754 single precision floats :) |
2283 |
|
|
substr $$mapped, 0, 8, pack "f*", 1, 2; |
2284 |
|
|
|
2285 |
|
|
=over 4 |
2286 |
|
|
|
2287 |
root |
1.67 |
=item $ev = $mapped->unmap ($wait_events...) |
2288 |
|
|
|
2289 |
|
|
Unmaps the mapped memory object, using the queue originally used to create |
2290 |
|
|
it, quite similarly to C<< $queue->unmap ($mapped, ...) >>. |
2291 |
|
|
|
2292 |
root |
1.66 |
=item $bool = $mapped->mapped |
2293 |
|
|
|
2294 |
|
|
Returns whether the object is still mapped - true before an C<unmap> is |
2295 |
|
|
enqueued, false afterwards. |
2296 |
|
|
|
2297 |
|
|
=item $ev = $mapped->event |
2298 |
|
|
|
2299 |
|
|
Return the event object associated with the mapped object. Initially, this |
2300 |
|
|
will be the event object created when mapping the object, and after an |
2301 |
|
|
unmap, this will be the event object that the unmap operation created. |
2302 |
|
|
|
2303 |
|
|
=item $mapped->wait |
2304 |
|
|
|
2305 |
|
|
Same as C<< $mapped->event->wait >> - makes sure no operations on this |
2306 |
|
|
mapped object are outstanding. |
2307 |
|
|
|
2308 |
|
|
=item $bytes = $mapped->size |
2309 |
|
|
|
2310 |
|
|
Returns the size of the mapped area, in bytes. Same as C<length $$mapped>. |
2311 |
|
|
|
2312 |
|
|
=item $ptr = $mapped->ptr |
2313 |
|
|
|
2314 |
root |
1.68 |
Returns the raw memory address of the mapped area. |
2315 |
root |
1.66 |
|
2316 |
root |
1.67 |
=item $mapped->set ($offset, $data) |
2317 |
|
|
|
2318 |
|
|
Replaces the data at the given C<$offset> in the memory area by the new |
2319 |
root |
1.68 |
C<$data>. This method is safer than direct manipulation of C<$mapped> |
2320 |
|
|
because it does bounds-checking, but also slower. |
2321 |
root |
1.67 |
|
2322 |
|
|
=item $data = $mapped->get ($offset, $length) |
2323 |
|
|
|
2324 |
|
|
Returns (without copying) a scalar representing the data at the given |
2325 |
|
|
C<$offset> and C<$length> in the mapped memory area. This is the same as |
2326 |
root |
1.68 |
the following substr, except much slower; |
2327 |
root |
1.67 |
|
2328 |
|
|
$data = substr $$mapped, $offset, $length |
2329 |
|
|
|
2330 |
|
|
=cut |
2331 |
|
|
|
2332 |
root |
1.68 |
sub OpenCL::Mapped::get { |
2333 |
root |
1.67 |
substr ${$_[0]}, $_[1], $_[2] |
2334 |
|
|
} |
2335 |
|
|
|
2336 |
root |
1.66 |
=back |
2337 |
|
|
|
2338 |
|
|
=head2 THE OpenCL::MappedBuffer CLASS |
2339 |
|
|
|
2340 |
|
|
This is a subclass of OpenCL::Mapped, representing mapped buffers. |
2341 |
|
|
|
2342 |
|
|
=head2 THE OpenCL::MappedImage CLASS |
2343 |
|
|
|
2344 |
|
|
This is a subclass of OpenCL::Mapped, representing mapped images. |
2345 |
|
|
|
2346 |
|
|
=over 4 |
2347 |
|
|
|
2348 |
root |
1.84 |
=item $pixels = $mapped->width |
2349 |
|
|
|
2350 |
|
|
=item $pixels = $mapped->height |
2351 |
|
|
|
2352 |
|
|
=item $pixels = $mapped->depth |
2353 |
|
|
|
2354 |
|
|
Return the width/height/depth of the mapped image region, in pixels. |
2355 |
|
|
|
2356 |
root |
1.67 |
=item $bytes = $mapped->row_pitch |
2357 |
|
|
|
2358 |
|
|
=item $bytes = $mapped->slice_pitch |
2359 |
|
|
|
2360 |
|
|
Return the row or slice pitch of the image that has been mapped. |
2361 |
|
|
|
2362 |
root |
1.84 |
=item $bytes = $mapped->element_size |
2363 |
|
|
|
2364 |
|
|
Return the size of a single pixel. |
2365 |
|
|
|
2366 |
|
|
=item $data = $mapped->get_row ($count, $x=0, $y=0, $z=0) |
2367 |
|
|
|
2368 |
|
|
Return C<$count> pixels from the given coordinates. The pixel data must |
2369 |
|
|
be completely contained within a single row. |
2370 |
|
|
|
2371 |
|
|
If C<$count> is C<undef>, then all the remaining pixels in that row are |
2372 |
|
|
returned. |
2373 |
|
|
|
2374 |
|
|
=item $mapped->set_row ($data, $x=0, $y=0, $z=0) |
2375 |
|
|
|
2376 |
|
|
Write the given pixel data at the given coordinate. The pixel data must |
2377 |
|
|
be completely contained within a single row. |
2378 |
|
|
|
2379 |
root |
1.66 |
=back |
2380 |
|
|
|
2381 |
root |
1.1 |
=cut |
2382 |
|
|
|
2383 |
|
|
1; |
2384 |
|
|
|
2385 |
|
|
=head1 AUTHOR |
2386 |
|
|
|
2387 |
|
|
Marc Lehmann <schmorp@schmorp.de> |
2388 |
|
|
http://home.schmorp.de/ |
2389 |
|
|
|
2390 |
|
|
=cut |
2391 |
|
|
|