… | |
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6 | |
6 | |
7 | use OpenCL; |
7 | use OpenCL; |
8 | |
8 | |
9 | =head1 DESCRIPTION |
9 | =head1 DESCRIPTION |
10 | |
10 | |
11 | This is an early release which might be useful, but hasn't seen any testing. |
11 | This is an early release which might be useful, but hasn't seen much testing. |
12 | |
12 | |
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13 | =head2 OpenCL FROM 10000 FEET HEIGHT |
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14 | |
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15 | Here is a high level overview of OpenCL: |
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16 | |
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17 | First you need to find one or more OpenCL::Platforms (kind of like |
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18 | vendors) - usually there is only one. |
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19 | |
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20 | Each platform gives you access to a number of OpenCL::Device objects, e.g. |
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21 | your graphics card. |
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22 | |
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23 | From a platform and some device(s), you create an OpenCL::Context, which is |
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24 | a very central object in OpenCL: Once you have a context you can create |
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25 | most other objects: |
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26 | |
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27 | OpenCL::Program objects, which store source code and, after building for a |
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28 | specific device ("compiling and linking"), also binary programs. For each |
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29 | kernel function in a program you can then create an OpenCL::Kernel object |
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30 | which represents basically a function call with argument values. |
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31 | |
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32 | OpenCL::Memory objects of various flavours: OpenCL::Buffer objects (flat |
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33 | memory areas, think arrays or structs) and OpenCL::Image objects (think 2d |
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34 | or 3d array) for bulk data and input and output for kernels. |
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35 | |
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36 | OpenCL::Sampler objects, which are kind of like texture filter modes in |
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37 | OpenGL. |
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38 | |
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39 | OpenCL::Queue objects - command queues, which allow you to submit memory |
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40 | reads, writes and copies, as well as kernel calls to your devices. They |
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41 | also offer a variety of methods to synchronise request execution, for |
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42 | example with barriers or OpenCL::Event objects. |
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43 | |
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44 | OpenCL::Event objects are used to signal when something is complete. |
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45 | |
13 | =head1 HELPFUL RESOURCES |
46 | =head2 HELPFUL RESOURCES |
14 | |
47 | |
15 | The OpenCL spec used to develop this module (1.2 spec was available, but |
48 | The OpenCL spec used to develop this module (1.2 spec was available, but |
16 | no implementation was available to me :). |
49 | no implementation was available to me :). |
17 | |
50 | |
18 | http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf |
51 | http://www.khronos.org/registry/cl/specs/opencl-1.1.pdf |
19 | |
52 | |
20 | OpenCL manpages: |
53 | OpenCL manpages: |
21 | |
54 | |
22 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/ |
55 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/ |
23 | |
56 | |
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57 | If you are into UML class diagrams, the following diagram might help - if |
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58 | not, it will be mildly cobfusing: |
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59 | |
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60 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/classDiagram.html |
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61 | |
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62 | Here's a tutorial from AMD (very AMD-centric, too), not sure how useful it |
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63 | is, but at least it's free of charge: |
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64 | |
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65 | http://developer.amd.com/zones/OpenCLZone/courses/Documents/Introduction_to_OpenCL_Programming%20Training_Guide%20%28201005%29.pdf |
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66 | |
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67 | And here's NVIDIA's OpenCL Best Practises Guide: |
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68 | |
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69 | http://developer.download.nvidia.com/compute/cuda/3_2/toolkit/docs/OpenCL_Best_Practices_Guide.pdf |
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70 | |
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71 | =head1 BASIC WORKFLOW |
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72 | |
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73 | To get something done, you basically have to do this once (refer to the |
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74 | examples below for actual code, this is just a high-level description): |
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75 | |
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76 | Find some platform (e.g. the first one) and some device(s) (e.g. the first |
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77 | device of the platform), and create a context from those. |
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78 | |
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79 | Create program objects from your OpenCL source code, then build (compile) |
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80 | the programs for each device you want to run them on. |
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81 | |
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82 | Create kernel objects for all kernels you want to use (surprisingly, these |
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83 | are not device-specific). |
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84 | |
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85 | Then, to execute stuff, you repeat these steps, possibly resuing or |
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86 | sharing some buffers: |
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87 | |
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88 | Create some input and output buffers from your context. Set these as |
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89 | arguments to your kernel. |
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90 | |
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91 | Enqueue buffer writes to initialise your input buffers (when not |
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92 | initialised at creation time). |
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93 | |
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94 | Enqueue the kernel execution. |
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95 | |
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96 | Enqueue buffer reads for your output buffer to read results. |
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97 | |
24 | =head1 EXAMPLES |
98 | =head1 EXAMPLES |
25 | |
99 | |
26 | =head2 Enumerate all devices and get contexts for them. |
100 | =head2 Enumerate all devices and get contexts for them. |
27 | |
101 | |
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102 | Best run this once to get a feel for the platforms and devices in your |
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103 | system. |
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104 | |
28 | for my $platform (OpenCL::platforms) { |
105 | for my $platform (OpenCL::platforms) { |
29 | warn $platform->info (OpenCL::PLATFORM_NAME); |
106 | printf "platform: %s\n", $platform->info (OpenCL::PLATFORM_NAME); |
30 | warn $platform->info (OpenCL::PLATFORM_EXTENSIONS); |
107 | printf "extensions: %s\n", $platform->info (OpenCL::PLATFORM_EXTENSIONS); |
31 | for my $device ($platform->devices) { |
108 | for my $device ($platform->devices) { |
32 | warn $device->info (OpenCL::DEVICE_NAME); |
109 | printf "+ device: %s\n", $device->info (OpenCL::DEVICE_NAME); |
33 | my $ctx = $device->context_simple; |
110 | my $ctx = $device->context; |
34 | # do stuff |
111 | # do stuff |
35 | } |
112 | } |
36 | } |
113 | } |
37 | |
114 | |
38 | =head2 Get a useful context and a command queue. |
115 | =head2 Get a useful context and a command queue. |
39 | |
116 | |
40 | my $dev = ((OpenCL::platforms)[0]->devices)[0]; |
117 | This is a useful boilerplate for any OpenCL program that only wants to use |
41 | my $ctx = $dev->context_simple; |
118 | one device, |
42 | my $queue = $ctx->command_queue_simple ($dev); |
119 | |
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120 | my ($platform) = OpenCL::platforms; # find first platform |
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121 | my ($dev) = $platform->devices; # find first device of platform |
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122 | my $ctx = $platform->context (undef, [$dev]); # create context out of those |
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123 | my $queue = $ctx->queue ($dev); # create a command queue for the device |
43 | |
124 | |
44 | =head2 Print all supported image formats of a context. |
125 | =head2 Print all supported image formats of a context. |
45 | |
126 | |
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127 | Best run this once for your context, to see whats available and how to |
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128 | gather information. |
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129 | |
46 | for my $type (OpenCL::MEM_OBJECT_IMAGE2D, OpenCL::MEM_OBJECT_IMAGE3D) { |
130 | for my $type (OpenCL::MEM_OBJECT_IMAGE2D, OpenCL::MEM_OBJECT_IMAGE3D) { |
47 | say "supported image formats for ", OpenCL::enum2str $type; |
131 | print "supported image formats for ", OpenCL::enum2str $type, "\n"; |
48 | |
132 | |
49 | for my $f ($ctx->supported_image_formats (0, $type)) { |
133 | for my $f ($ctx->supported_image_formats (0, $type)) { |
50 | printf " %-10s %-20s\n", OpenCL::enum2str $f->[0], OpenCL::enum2str $f->[1]; |
134 | printf " %-10s %-20s\n", OpenCL::enum2str $f->[0], OpenCL::enum2str $f->[1]; |
51 | } |
135 | } |
52 | } |
136 | } |
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55 | then asynchronously. |
139 | then asynchronously. |
56 | |
140 | |
57 | my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut"); |
141 | my $buf = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, "helmut"); |
58 | |
142 | |
59 | $queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data); |
143 | $queue->enqueue_read_buffer ($buf, 1, 1, 3, my $data); |
60 | warn $data; |
144 | print "$data\n"; |
61 | |
145 | |
62 | my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data); |
146 | my $ev = $queue->enqueue_read_buffer ($buf, 0, 1, 3, my $data); |
63 | $ev->wait; |
147 | $ev->wait; |
64 | warn $data; |
148 | print "$data\n"; # prints "elm" |
65 | |
149 | |
66 | =head2 Create and build a program, then create a kernel out of one of its |
150 | =head2 Create and build a program, then create a kernel out of one of its |
67 | functions. |
151 | functions. |
68 | |
152 | |
69 | my $src = ' |
153 | my $src = ' |
70 | __kernel void |
154 | __kernel void |
71 | squareit (__global float *input, __global float *output) |
155 | squareit (__global float *input, __global float *output) |
72 | { |
156 | { |
73 | size_t id = get_global_id (0); |
157 | $id = get_global_id (0); |
74 | output [id] = input [id] * input [id]; |
158 | output [id] = input [id] * input [id]; |
75 | } |
159 | } |
76 | '; |
160 | '; |
77 | |
161 | |
78 | my $prog = $ctx->program_with_source ($src); |
162 | my $prog = $ctx->program_with_source ($src); |
79 | |
163 | |
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164 | # build croaks on compile errors, so catch it and print the compile errors |
80 | eval { $prog->build ($dev); 1 } |
165 | eval { $prog->build ($dev); 1 } |
81 | or die $prog->build_info ($dev, OpenCL::PROGRAM_BUILD_LOG); |
166 | or die $prog->build_info ($dev, OpenCL::PROGRAM_BUILD_LOG); |
82 | |
167 | |
83 | my $kernel = $prog->kernel ("squareit"); |
168 | my $kernel = $prog->kernel ("squareit"); |
84 | |
169 | |
85 | =head2 Create some input and output float buffers, then call squareit on them. |
170 | =head2 Create some input and output float buffers, then call the |
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171 | 'squareit' kernel on them. |
86 | |
172 | |
87 | my $input = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, pack "f*", 1, 2, 3, 4.5); |
173 | my $input = $ctx->buffer_sv (OpenCL::MEM_COPY_HOST_PTR, pack "f*", 1, 2, 3, 4.5); |
88 | my $output = $ctx->buffer (0, OpenCL::SIZEOF_FLOAT * 5); |
174 | my $output = $ctx->buffer (0, OpenCL::SIZEOF_FLOAT * 5); |
89 | |
175 | |
90 | # set buffer |
176 | # set buffer |
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96 | |
182 | |
97 | # enqueue a synchronous read |
183 | # enqueue a synchronous read |
98 | $queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data); |
184 | $queue->enqueue_read_buffer ($output, 1, 0, OpenCL::SIZEOF_FLOAT * 4, my $data); |
99 | |
185 | |
100 | # print the results: |
186 | # print the results: |
101 | say join ", ", unpack "f*", $data; |
187 | printf "%s\n", join ", ", unpack "f*", $data; |
102 | |
188 | |
103 | =head2 The same enqueue operations as before, but assuming an out-of-order queue, |
189 | =head2 The same enqueue operations as before, but assuming an out-of-order queue, |
104 | showing off barriers. |
190 | showing off barriers. |
105 | |
191 | |
106 | # execute it for all 4 numbers |
192 | # execute it for all 4 numbers |
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129 | |
215 | |
130 | =head1 DOCUMENTATION |
216 | =head1 DOCUMENTATION |
131 | |
217 | |
132 | =head2 BASIC CONVENTIONS |
218 | =head2 BASIC CONVENTIONS |
133 | |
219 | |
134 | This is not a 1:1 C-style translation of OpenCL to Perl - instead I |
220 | This is not a one-to-one C-style translation of OpenCL to Perl - instead |
135 | attempted to make the interface as type-safe as possible and introducing |
221 | I attempted to make the interface as type-safe as possible by introducing |
136 | object syntax where it makes sense. There are a number of important |
222 | object syntax where it makes sense. There are a number of important |
137 | differences between the OpenCL C API and this module: |
223 | differences between the OpenCL C API and this module: |
138 | |
224 | |
139 | =over 4 |
225 | =over 4 |
140 | |
226 | |
141 | =item * Object lifetime managament is automatic - there is no need |
227 | =item * Object lifetime managament is automatic - there is no need |
142 | to free objects explicitly (C<clReleaseXXX>), the release function |
228 | to free objects explicitly (C<clReleaseXXX>), the release function |
143 | is called automatically once all Perl references to it go away. |
229 | is called automatically once all Perl references to it go away. |
144 | |
230 | |
145 | =item * OpenCL uses CamelCase for function names (C<clGetPlatformInfo>), |
231 | =item * OpenCL uses CamelCase for function names |
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232 | (e.g. C<clGetPlatformIDs>, C<clGetPlatformInfo>), while this module |
146 | while this module uses underscores as word separator and often leaves out |
233 | uses underscores as word separator and often leaves out prefixes |
147 | prefixes (C<< $platform->info >>). |
234 | (C<OpenCL::platforms>, C<< $platform->info >>). |
148 | |
235 | |
149 | =item * OpenCL often specifies fixed vector function arguments as short |
236 | =item * OpenCL often specifies fixed vector function arguments as short |
150 | arrays (C<size_t origin[3]>), while this module explicitly expects the |
237 | arrays (C<size_t origin[3]>), while this module explicitly expects the |
151 | components as separate arguments- |
238 | components as separate arguments (C<$orig_x, $orig_y, $orig_z>) in |
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239 | function calls. |
152 | |
240 | |
153 | =item * Where possible, the row_pitch value is calculated from the perl |
241 | =item * Structures are often specified by flattening out their components |
154 | scalar length and need not be specified. |
242 | as with short vectors, and returned as arrayrefs. |
155 | |
243 | |
156 | =item * When enqueuing commands, the wait list is specified by adding |
244 | =item * When enqueuing commands, the wait list is specified by adding |
157 | extra arguments to the function - everywhere a C<$wait_events...> argument |
245 | extra arguments to the function - anywhere a C<$wait_events...> argument |
158 | is documented this can be any number of event objects. |
246 | is documented this can be any number of event objects. |
159 | |
247 | |
160 | =item * When enqueuing commands, if the enqueue method is called in void |
248 | =item * When enqueuing commands, if the enqueue method is called in void |
161 | context, no event is created. In all other contexts an event is returned |
249 | context, no event is created. In all other contexts an event is returned |
162 | by the method. |
250 | by the method. |
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165 | other status is returned the function will throw an exception, so you |
253 | other status is returned the function will throw an exception, so you |
166 | don't normally have to to any error checking. |
254 | don't normally have to to any error checking. |
167 | |
255 | |
168 | =back |
256 | =back |
169 | |
257 | |
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258 | =head2 PERL AND OPENCL TYPES |
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259 | |
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260 | This handy(?) table lists OpenCL types and their perl, PDL and pack/unpack |
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261 | format equivalents: |
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262 | |
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263 | OpenCL perl PDL pack/unpack |
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264 | char IV - c |
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265 | uchar IV byte C |
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266 | short IV short s |
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267 | ushort IV ushort S |
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268 | int IV long? l |
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269 | uint IV - L |
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270 | long IV longlong q |
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271 | ulong IV - Q |
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272 | float NV float f |
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273 | half IV ushort S |
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274 | double NV double d |
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275 | |
170 | =head2 THE OpenCL PACKAGE |
276 | =head2 THE OpenCL PACKAGE |
171 | |
277 | |
172 | =over 4 |
278 | =over 4 |
173 | |
279 | |
174 | =item $int = OpenCL::errno |
280 | =item $int = OpenCL::errno |
175 | |
281 | |
176 | The last error returned by a function - it's only changed on errors. |
282 | The last error returned by a function - it's only valid after an error occured |
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283 | and before calling another OpenCL function. |
177 | |
284 | |
178 | =item $str = OpenCL::err2str $errval |
285 | =item $str = OpenCL::err2str $errval |
179 | |
286 | |
180 | Comverts an error value into a human readable string. |
287 | Comverts an error value into a human readable string. |
181 | |
288 | |
182 | =item $str = OpenCL::err2str $enum |
289 | =item $str = OpenCL::enum2str $enum |
183 | |
290 | |
184 | Converts most enum values (inof parameter names, image format constants, |
291 | Converts most enum values (inof parameter names, image format constants, |
185 | object types, addressing and filter modes, command types etc.) into a |
292 | object types, addressing and filter modes, command types etc.) into a |
186 | human readbale string. When confronted with some random integer it can be |
293 | human readbale string. When confronted with some random integer it can be |
187 | very helpful to pass it through this function to maybe get some readable |
294 | very helpful to pass it through this function to maybe get some readable |
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191 | |
298 | |
192 | Returns all available OpenCL::Platform objects. |
299 | Returns all available OpenCL::Platform objects. |
193 | |
300 | |
194 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html> |
301 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformIDs.html> |
195 | |
302 | |
196 | =item $ctx = OpenCL::context_from_type_simple $type = OpenCL::DEVICE_TYPE_DEFAULT |
303 | =item $ctx = OpenCL::context_from_type $properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef |
197 | |
304 | |
198 | Tries to create a context from a default device and platform - never worked for me. |
305 | Tries to create a context from a default device and platform - never worked for me. |
199 | |
306 | |
200 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
307 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
201 | |
308 | |
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208 | =back |
315 | =back |
209 | |
316 | |
210 | =head2 THE OpenCL::Platform CLASS |
317 | =head2 THE OpenCL::Platform CLASS |
211 | |
318 | |
212 | =over 4 |
319 | =over 4 |
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320 | |
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321 | =item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL) |
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322 | |
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323 | Returns a list of matching OpenCL::Device objects. |
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324 | |
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325 | =item $ctx = $platform->context_from_type ($properties, $type = OpenCL::DEVICE_TYPE_DEFAULT, $notify = undef) |
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326 | |
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327 | Tries to create a context. Never worked for me, and you need devices explitly anyway. |
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328 | |
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329 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
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330 | |
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331 | =item $ctx = $device->context ($properties = undef, @$devices, $notify = undef) |
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332 | |
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333 | Create a new OpenCL::Context object using the given device object(s)- a |
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334 | CL_CONTEXT_PLATFORM property is supplied automatically. |
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335 | |
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336 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
213 | |
337 | |
214 | =item $packed_value = $platform->info ($name) |
338 | =item $packed_value = $platform->info ($name) |
215 | |
339 | |
216 | Calls C<clGetPlatformInfo> and returns the packed, raw value - for |
340 | Calls C<clGetPlatformInfo> and returns the packed, raw value - for |
217 | strings, this will be the string, for other values you probably need to |
341 | strings, this will be the string, for other values you probably need to |
218 | use the correct C<unpack>. This might get improved in the future. Hopefully. |
342 | use the correct C<unpack>. |
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343 | |
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344 | It's best to avoid this method and use one of the predefined C<get_*> |
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345 | methods. |
219 | |
346 | |
220 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html> |
347 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetPlatformInfo.html> |
221 | |
348 | |
222 | =item @devices = $platform->devices ($type = OpenCL::DEVICE_TYPE_ALL) |
349 | =for gengetinfo begin platform |
223 | |
350 | |
224 | Returns a list of matching OpenCL::Device objects. |
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225 | |
351 | |
226 | =item $ctx = $platform->context_from_type_simple ($type = OpenCL::DEVICE_TYPE_DEFAULT) |
352 | =item $string = $platform->profile |
227 | |
353 | |
228 | Tries to create a context. Never worked for me. |
354 | Calls C<clGetPlatformInfo> with C<CL_PLATFORM_PROFILE> and returns the result(s). |
229 | |
355 | |
230 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
356 | =item $string = $platform->version |
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357 | |
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358 | Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VERSION> and returns the result(s). |
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359 | |
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360 | =item $string = $platform->name |
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361 | |
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362 | Calls C<clGetPlatformInfo> with C<CL_PLATFORM_NAME> and returns the result(s). |
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363 | |
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364 | =item $string = $platform->vendor |
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365 | |
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366 | Calls C<clGetPlatformInfo> with C<CL_PLATFORM_VENDOR> and returns the result(s). |
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367 | |
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368 | =item $string = $platform->extensions |
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369 | |
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370 | Calls C<clGetPlatformInfo> with C<CL_PLATFORM_EXTENSIONS> and returns the result(s). |
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371 | =for gengetinfo end platform |
231 | |
372 | |
232 | =back |
373 | =back |
233 | |
374 | |
234 | =head2 THE OpenCL::Device CLASS |
375 | =head2 THE OpenCL::Device CLASS |
235 | |
376 | |
… | |
… | |
239 | |
380 | |
240 | See C<< $platform->info >> for details. |
381 | See C<< $platform->info >> for details. |
241 | |
382 | |
242 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html> |
383 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetDeviceInfo.html> |
243 | |
384 | |
244 | =item $ctx = $device->context_simple |
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245 | |
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246 | Convenience function to create a new OpenCL::Context object. |
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247 | |
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248 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
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249 | |
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250 | =back |
385 | =back |
251 | |
386 | |
252 | =head2 THE OpenCL::Context CLASS |
387 | =head2 THE OpenCL::Context CLASS |
253 | |
388 | |
254 | =over 4 |
389 | =over 4 |
255 | |
390 | |
256 | =item $packed_value = $ctx->info ($name) |
391 | =item $queue = $ctx->queue ($device, $properties) |
257 | |
392 | |
258 | See C<< $platform->info >> for details. |
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259 | |
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260 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html> |
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261 | |
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262 | =item $queue = $ctx->command_queue_simple ($device) |
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263 | |
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264 | Convenience function to create a new OpenCL::Queue object from the context and the given device. |
393 | Create a new OpenCL::Queue object from the context and the given device. |
265 | |
394 | |
266 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html> |
395 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateCommandQueue.html> |
267 | |
396 | |
268 | =item $ev = $ctx->user_event |
397 | =item $ev = $ctx->user_event |
269 | |
398 | |
… | |
… | |
279 | |
408 | |
280 | =item $buf = $ctx->buffer_sv ($flags, $data) |
409 | =item $buf = $ctx->buffer_sv ($flags, $data) |
281 | |
410 | |
282 | Creates a new OpenCL::Buffer object and initialise it with the given data values. |
411 | Creates a new OpenCL::Buffer object and initialise it with the given data values. |
283 | |
412 | |
284 | =item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $data) |
413 | =item $img = $ctx->image2d ($flags, $channel_order, $channel_type, $width, $height, $row_pitch = 0, $data = undef) |
285 | |
414 | |
286 | Creates a new OpenCL::Image2D object and optionally initialises it with the given data values. |
415 | Creates a new OpenCL::Image2D object and optionally initialises it with the given data values. |
287 | |
416 | |
288 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html> |
417 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage2D.html> |
289 | |
418 | |
290 | =item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $slice_pitch, $data) |
419 | =item $img = $ctx->image3d ($flags, $channel_order, $channel_type, $width, $height, $depth, $row_pitch = 0, $slice_pitch = 0, $data = undef) |
291 | |
420 | |
292 | Creates a new OpenCL::Image3D object and optionally initialises it with the given data values. |
421 | Creates a new OpenCL::Image3D object and optionally initialises it with the given data values. |
293 | |
422 | |
294 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
423 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
295 | |
424 | |
… | |
… | |
309 | =item $program = $ctx->program_with_source ($string) |
438 | =item $program = $ctx->program_with_source ($string) |
310 | |
439 | |
311 | Creates a new OpenCL::Program object from the given source code. |
440 | Creates a new OpenCL::Program object from the given source code. |
312 | |
441 | |
313 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html> |
442 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateProgramWithSource.html> |
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443 | |
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444 | =item $packed_value = $ctx->info ($name) |
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445 | |
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446 | See C<< $platform->info >> for details. |
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447 | |
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448 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetContextInfo.html> |
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449 | |
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450 | =for gengetinfo begin context |
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451 | |
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452 | =for gengetinfo end context |
314 | |
453 | |
315 | =back |
454 | =back |
316 | |
455 | |
317 | =head2 THE OpenCL::Queue CLASS |
456 | =head2 THE OpenCL::Queue CLASS |
318 | |
457 | |
… | |
… | |
327 | They also allow you to specify any number of other event objects that this |
466 | They also allow you to specify any number of other event objects that this |
328 | request has to wait for before it starts executing, by simply passing the |
467 | request has to wait for before it starts executing, by simply passing the |
329 | event objects as extra parameters to the enqueue methods. |
468 | event objects as extra parameters to the enqueue methods. |
330 | |
469 | |
331 | Queues execute in-order by default, without any parallelism, so in most |
470 | Queues execute in-order by default, without any parallelism, so in most |
332 | cases it's not necessary to wait for or create event objects. |
471 | cases (i.e. you use only one queue) it's not necessary to wait for or |
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472 | create event objects. |
333 | |
473 | |
334 | =over 4 |
474 | =over 4 |
335 | |
475 | |
336 | =item $packed_value = $ctx->info ($name) |
476 | =item $packed_value = $ctx->info ($name) |
337 | |
477 | |
… | |
… | |
357 | |
497 | |
358 | =item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
498 | =item $ev = $queue->enqueue_read_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
359 | |
499 | |
360 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html> |
500 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html> |
361 | |
501 | |
362 | =item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $data, $wait_events...) |
502 | =item $ev = $queue->enqueue_write_image ($src, $blocking, $x, $y, $z, $width, $height, $depth, $row_pitch, $slice_pitch, $data, $wait_events...) |
363 | |
503 | |
364 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html> |
504 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWriteImage.html> |
365 | |
505 | |
366 | =item $ev = $queue->enqueue_copy_buffer_rect ($src, $dst, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $src_row_pitch, $src_slice_pitch, 4dst_row_pitch, $dst_slice_pitch, $ait_event...) |
506 | =item $ev = $queue->enqueue_copy_buffer_rect ($src, $dst, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $src_row_pitch, $src_slice_pitch, $dst_row_pitch, $dst_slice_pitch, $wait_event...) |
367 | |
507 | |
368 | Yeah. |
508 | Yeah. |
369 | |
509 | |
370 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html> |
510 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferRect.html> |
371 | |
511 | |
372 | =item $ev = $queue->enqueue_copy_buffer_to_image (OpenCL::Buffer src, OpenCL::Image dst, size_t src_offset, size_t dst_x, size_t dst_y, size_t dst_z, size_t width, size_t height, size_t depth, ...) |
512 | =item $ev = $queue->enqueue_copy_buffer_to_image ($src_buffer, $dst_image, $src_offset, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...) |
373 | |
513 | |
374 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>. |
514 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyBufferToImage.html>. |
375 | |
515 | |
376 | =item $ev = $queue->enqueue_copy_image (OpenCL::Image src, OpenCL::Buffer dst, size_t src_x, size_t src_y, size_t src_z, size_t dst_x, size_t dst_y, size_t dst_z, size_t width, size_t height, size_t depth, ...) |
516 | =item $ev = $queue->enqueue_copy_image ($src_image, $dst_image, $src_x, $src_y, $src_z, $dst_x, $dst_y, $dst_z, $width, $height, $depth, $wait_events...) |
377 | |
517 | |
378 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html> |
518 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImage.html> |
379 | |
519 | |
380 | =item $ev = $queue->enqueue_copy_image_to_buffer (OpenCL::Image src, OpenCL::Buffer dst, size_t src_x, size_t src_y, size_t src_z, size_t width, size_t height, size_t depth, size_t dst_offset, ...) |
520 | =item $ev = $queue->enqueue_copy_image_to_buffer ($src_image, $dst_image, $src_x, $src_y, $src_z, $width, $height, $depth, $dst_offset, $wait_events...) |
381 | |
521 | |
382 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html> |
522 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueCopyImageToBuffer.html> |
383 | |
523 | |
384 | =item $ev = $queue->enqueue_task ($kernel, $wait_events...) |
524 | =item $ev = $queue->enqueue_task ($kernel, $wait_events...) |
385 | |
525 | |
… | |
… | |
439 | |
579 | |
440 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html> |
580 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetMemObjectInfo.html> |
441 | |
581 | |
442 | =back |
582 | =back |
443 | |
583 | |
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584 | =head2 THE OpenCL::Image CLASS |
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585 | |
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586 | This is the superclass of all image objects - OpenCL::Image2D and OpenCL::Image3D. |
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587 | |
|
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588 | =over 4 |
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589 | |
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590 | =item $packed_value = $ev->image_info ($name) |
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591 | |
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592 | See C<< $platform->info >> for details. |
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593 | |
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594 | The reason this method is not called C<info> is that there already is an |
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595 | C<< ->info >> method inherited from C<OpenCL::Memory>. |
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596 | |
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597 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetImageInfo.html> |
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598 | |
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599 | =back |
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600 | |
444 | =head2 THE OpenCL::Sampler CLASS |
601 | =head2 THE OpenCL::Sampler CLASS |
445 | |
602 | |
446 | =over 4 |
603 | =over 4 |
447 | |
604 | |
448 | =item $packed_value = $sampler->info ($name) |
605 | =item $packed_value = $sampler->info ($name) |
… | |
… | |
492 | =item $packed_value = $kernel->info ($name) |
649 | =item $packed_value = $kernel->info ($name) |
493 | |
650 | |
494 | See C<< $platform->info >> for details. |
651 | See C<< $platform->info >> for details. |
495 | |
652 | |
496 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html> |
653 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelInfo.html> |
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654 | |
|
|
655 | =item $packed_value = $kernel->work_group_info ($device, $name) |
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656 | |
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657 | See C<< $platform->info >> for details. |
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658 | |
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659 | The reason this method is not called C<info> is that there already is an |
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660 | C<< ->info >> method. |
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661 | |
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662 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetKernelWorkGroupInfo.html> |
497 | |
663 | |
498 | =item $kernel->set_TYPE ($index, $value) |
664 | =item $kernel->set_TYPE ($index, $value) |
499 | |
665 | |
500 | This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>. |
666 | This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>. |
501 | |
667 | |
… | |
… | |
523 | |
689 | |
524 | See C<< $platform->info >> for details. |
690 | See C<< $platform->info >> for details. |
525 | |
691 | |
526 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html> |
692 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetEventInfo.html> |
527 | |
693 | |
|
|
694 | =item $packed_value = $ev->profiling_info ($name) |
|
|
695 | |
|
|
696 | See C<< $platform->info >> for details. |
|
|
697 | |
|
|
698 | The reason this method is not called C<info> is that there already is an |
|
|
699 | C<< ->info >> method. |
|
|
700 | |
|
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701 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetProfilingInfo.html> |
|
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702 | |
528 | =item $ev->wait |
703 | =item $ev->wait |
529 | |
704 | |
530 | Waits for the event to complete. |
705 | Waits for the event to complete. |
531 | |
706 | |
532 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
707 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clWaitForEvents.html> |
… | |
… | |
550 | package OpenCL; |
725 | package OpenCL; |
551 | |
726 | |
552 | use common::sense; |
727 | use common::sense; |
553 | |
728 | |
554 | BEGIN { |
729 | BEGIN { |
555 | our $VERSION = '0.03'; |
730 | our $VERSION = '0.15'; |
556 | |
731 | |
557 | require XSLoader; |
732 | require XSLoader; |
558 | XSLoader::load (__PACKAGE__, $VERSION); |
733 | XSLoader::load (__PACKAGE__, $VERSION); |
559 | |
734 | |
560 | @OpenCL::Buffer::ISA = |
735 | @OpenCL::Buffer::ISA = |