… | |
… | |
105 | for my $platform (OpenCL::platforms) { |
105 | for my $platform (OpenCL::platforms) { |
106 | printf "platform: %s\n", $platform->name; |
106 | printf "platform: %s\n", $platform->name; |
107 | printf "extensions: %s\n", $platform->extensions; |
107 | printf "extensions: %s\n", $platform->extensions; |
108 | for my $device ($platform->devices) { |
108 | for my $device ($platform->devices) { |
109 | printf "+ device: %s\n", $device->name; |
109 | printf "+ device: %s\n", $device->name; |
110 | my $ctx = $device->context; |
110 | my $ctx = $platform->context (undef, [$device]); |
111 | # do stuff |
111 | # do stuff |
112 | } |
112 | } |
113 | } |
113 | } |
114 | |
114 | |
115 | =head2 Get a useful context and a command queue. |
115 | =head2 Get a useful context and a command queue. |
… | |
… | |
149 | |
149 | |
150 | =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 |
151 | functions. |
151 | functions. |
152 | |
152 | |
153 | my $src = ' |
153 | my $src = ' |
154 | __kernel void |
154 | kernel void |
155 | squareit (__global float *input, __global float *output) |
155 | squareit (global float *input, global float *output) |
156 | { |
156 | { |
157 | $id = get_global_id (0); |
157 | $id = get_global_id (0); |
158 | output [id] = input [id] * input [id]; |
158 | output [id] = input [id] * input [id]; |
159 | } |
159 | } |
160 | '; |
160 | '; |
161 | |
161 | |
162 | my $prog = $ctx->program_with_source ($src); |
162 | my $prog = $ctx->program_with_source ($src); |
163 | |
163 | |
164 | # build croaks on compile errors, so catch it and print the compile errors |
164 | # build croaks on compile errors, so catch it and print the compile errors |
165 | eval { $prog->build ($dev); 1 } |
165 | eval { $prog->build ($dev, "-cl-fast-relaxed-math"); 1 } |
166 | or die $prog->build_log; |
166 | or die $prog->build_log; |
167 | |
167 | |
168 | my $kernel = $prog->kernel ("squareit"); |
168 | my $kernel = $prog->kernel ("squareit"); |
169 | |
169 | |
170 | =head2 Create some input and output float buffers, then call the |
170 | =head2 Create some input and output float buffers, then call the |
… | |
… | |
210 | # enqueue an async read |
210 | # enqueue an async read |
211 | $ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev); |
211 | $ev = $queue->enqueue_read_buffer ($output, 0, 0, OpenCL::SIZEOF_FLOAT * 4, my $data, $ev); |
212 | |
212 | |
213 | # wait for the last event to complete |
213 | # wait for the last event to complete |
214 | $ev->wait; |
214 | $ev->wait; |
|
|
215 | |
|
|
216 | =head2 Use the OpenGL module to share a texture between OpenCL and OpenGL and draw some julia |
|
|
217 | set tunnel effect. |
|
|
218 | |
|
|
219 | This is quite a long example to get you going. |
|
|
220 | |
|
|
221 | use OpenGL ":all"; |
|
|
222 | use OpenCL; |
|
|
223 | |
|
|
224 | # open a window and create a gl texture |
|
|
225 | OpenGL::glpOpenWindow width => 256, height => 256; |
|
|
226 | my $texid = glGenTextures_p 1; |
|
|
227 | glBindTexture GL_TEXTURE_2D, $texid; |
|
|
228 | glTexImage2D_c GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0; |
|
|
229 | |
|
|
230 | # find and use the first opencl device that let's us get a shared opengl context |
|
|
231 | my $platform; |
|
|
232 | my $dev; |
|
|
233 | my $ctx; |
|
|
234 | |
|
|
235 | for (OpenCL::platforms) { |
|
|
236 | $platform = $_; |
|
|
237 | for ($platform->devices) { |
|
|
238 | $dev = $_; |
|
|
239 | $ctx = $platform->context ([OpenCL::GLX_DISPLAY_KHR, undef, OpenCL::GL_CONTEXT_KHR, undef], [$dev]) |
|
|
240 | and last; |
|
|
241 | } |
|
|
242 | } |
|
|
243 | |
|
|
244 | $ctx |
|
|
245 | or die "cannot find suitable OpenCL device\n"; |
|
|
246 | |
|
|
247 | my $queue = $ctx->queue ($dev); |
|
|
248 | |
|
|
249 | # now attach an opencl image2d object to the opengl texture |
|
|
250 | my $tex = $ctx->gl_texture2d (OpenCL::MEM_WRITE_ONLY, GL_TEXTURE_2D, 0, $texid); |
|
|
251 | |
|
|
252 | # now the boring opencl code |
|
|
253 | my $src = <<EOF; |
|
|
254 | kernel void |
|
|
255 | juliatunnel (write_only image2d_t img, float time) |
|
|
256 | { |
|
|
257 | float2 p = (float2)(get_global_id (0), get_global_id (1)) / 256.f * 2.f - 1.f; |
|
|
258 | |
|
|
259 | float2 m = (float2)(1.f, p.y) / fabs (p.x); |
|
|
260 | m.x = fabs (fmod (m.x + time * 0.05f, 4.f)) - 2.f; |
|
|
261 | |
|
|
262 | float2 z = m; |
|
|
263 | float2 c = (float2)(sin (time * 0.05005), cos (time * 0.06001)); |
|
|
264 | |
|
|
265 | for (int i = 0; i < 25 && dot (z, z) < 4.f; ++i) |
|
|
266 | z = (float2)(z.x * z.x - z.y * z.y, 2.f * z.x * z.y) + c; |
|
|
267 | |
|
|
268 | float3 colour = (float3)(z.x, z.y, z.x * z.y); |
|
|
269 | write_imagef (img, (int2)(get_global_id (0), get_global_id (1)), (float4)(colour * p.x * p.x, 1.)); |
|
|
270 | } |
|
|
271 | EOF |
|
|
272 | my $prog = $ctx->program_with_source ($src); |
|
|
273 | eval { $prog->build ($dev); 1 } |
|
|
274 | or die $prog->build_log ($dev); |
|
|
275 | |
|
|
276 | my $kernel = $prog->kernel ("juliatunnel"); |
|
|
277 | |
|
|
278 | # program compiled, kernel ready, now draw and loop |
|
|
279 | |
|
|
280 | for (my $time; ; ++$time) { |
|
|
281 | # acquire objects from opengl |
|
|
282 | $queue->enqueue_acquire_gl_objects ([$tex]); |
|
|
283 | |
|
|
284 | # configure and run our kernel |
|
|
285 | $kernel->set_image2d (0, $tex); |
|
|
286 | $kernel->set_float (1, $time); |
|
|
287 | $queue->enqueue_nd_range_kernel ($kernel, undef, [256, 256], undef); |
|
|
288 | |
|
|
289 | # release objects to opengl again |
|
|
290 | $queue->enqueue_release_gl_objects ([$tex]); |
|
|
291 | |
|
|
292 | # wait |
|
|
293 | $queue->finish; |
|
|
294 | |
|
|
295 | # now draw the texture, the defaults should be all right |
|
|
296 | glTexParameterf GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST; |
|
|
297 | |
|
|
298 | glEnable GL_TEXTURE_2D; |
|
|
299 | glBegin GL_QUADS; |
|
|
300 | glTexCoord2f 0, 1; glVertex3i -1, -1, -1; |
|
|
301 | glTexCoord2f 0, 0; glVertex3i 1, -1, -1; |
|
|
302 | glTexCoord2f 1, 0; glVertex3i 1, 1, -1; |
|
|
303 | glTexCoord2f 1, 1; glVertex3i -1, 1, -1; |
|
|
304 | glEnd; |
|
|
305 | |
|
|
306 | glXSwapBuffers; |
|
|
307 | |
|
|
308 | select undef, undef, undef, 1/60; |
|
|
309 | } |
215 | |
310 | |
216 | =head1 DOCUMENTATION |
311 | =head1 DOCUMENTATION |
217 | |
312 | |
218 | =head2 BASIC CONVENTIONS |
313 | =head2 BASIC CONVENTIONS |
219 | |
314 | |
… | |
… | |
271 | ulong IV - Q |
366 | ulong IV - Q |
272 | float NV float f |
367 | float NV float f |
273 | half IV ushort S |
368 | half IV ushort S |
274 | double NV double d |
369 | double NV double d |
275 | |
370 | |
|
|
371 | =head2 GLX SUPPORT |
|
|
372 | |
|
|
373 | Due to the sad state that OpenGL support is in in Perl (mostly the OpenGL |
|
|
374 | module, which has little to no documentation and has little to no support |
|
|
375 | for glX), this module, as a special extension, treats context creation |
|
|
376 | properties C<OpenCL::GLX_DISPLAY_KHR> and C<OpenCL::GL_CONTEXT_KHR> |
|
|
377 | specially: If either or both of these are C<undef>, then the OpenCL |
|
|
378 | module tries to dynamically resolve C<glXGetCurrentDisplay> and |
|
|
379 | C<glXGetCurrentContext>, call these functions and use their return values |
|
|
380 | instead. |
|
|
381 | |
|
|
382 | For this to work, the OpenGL library must be loaded, a GLX context must |
|
|
383 | have been created and be made current, and C<dlsym> must be available and |
|
|
384 | capable of finding the function via C<RTLD_DEFAULT>. |
|
|
385 | |
276 | =head2 THE OpenCL PACKAGE |
386 | =head2 THE OpenCL PACKAGE |
277 | |
387 | |
278 | =over 4 |
388 | =over 4 |
279 | |
389 | |
280 | =item $int = OpenCL::errno |
390 | =item $int = OpenCL::errno |
… | |
… | |
286 | |
396 | |
287 | Comverts an error value into a human readable string. |
397 | Comverts an error value into a human readable string. |
288 | |
398 | |
289 | =item $str = OpenCL::enum2str $enum |
399 | =item $str = OpenCL::enum2str $enum |
290 | |
400 | |
291 | Converts most enum values (inof parameter names, image format constants, |
401 | Converts most enum values (of parameter names, image format constants, |
292 | object types, addressing and filter modes, command types etc.) into a |
402 | object types, addressing and filter modes, command types etc.) into a |
293 | human readbale string. When confronted with some random integer it can be |
403 | human readable string. When confronted with some random integer it can be |
294 | very helpful to pass it through this function to maybe get some readable |
404 | very helpful to pass it through this function to maybe get some readable |
295 | string out of it. |
405 | string out of it. |
296 | |
406 | |
297 | =item @platforms = OpenCL::platforms |
407 | =item @platforms = OpenCL::platforms |
298 | |
408 | |
… | |
… | |
326 | |
436 | |
327 | Tries to create a context. Never worked for me, and you need devices explicitly anyway. |
437 | Tries to create a context. Never worked for me, and you need devices explicitly anyway. |
328 | |
438 | |
329 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
439 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContextFromType.html> |
330 | |
440 | |
331 | =item $ctx = $device->context ($properties = undef, @$devices, $notify = undef) |
441 | =item $ctx = $platform->context ($properties = undef, @$devices, $notify = undef) |
332 | |
442 | |
333 | Create a new OpenCL::Context object using the given device object(s)- a |
443 | Create a new OpenCL::Context object using the given device object(s)- a |
334 | CL_CONTEXT_PLATFORM property is supplied automatically. |
444 | CL_CONTEXT_PLATFORM property is supplied automatically. |
335 | |
445 | |
336 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
446 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateContext.html> |
… | |
… | |
691 | |
801 | |
692 | Creates a new OpenCL::Image3D object and optionally initialises it with |
802 | Creates a new OpenCL::Image3D object and optionally initialises it with |
693 | the given data values. |
803 | the given data values. |
694 | |
804 | |
695 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
805 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateImage3D.html> |
|
|
806 | |
|
|
807 | =item $buffer = $ctx->gl_buffer ($flags, $bufobj) |
|
|
808 | |
|
|
809 | Creates a new OpenCL::Buffer (actually OpenCL::BufferObj) object that refers to the given |
|
|
810 | OpenGL buffer object. |
|
|
811 | |
|
|
812 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLBuffer.html |
|
|
813 | |
|
|
814 | =item $ctx->gl_texture2d ($flags, $target, $miplevel, $texture) |
|
|
815 | |
|
|
816 | Creates a new OpenCL::Image2D object that refers to the given OpenGL |
|
|
817 | 2D texture object. |
|
|
818 | |
|
|
819 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture2D.html |
|
|
820 | |
|
|
821 | =item $ctx->gl_texture3d ($flags, $target, $miplevel, $texture) |
|
|
822 | |
|
|
823 | Creates a new OpenCL::Image3D object that refers to the given OpenGL |
|
|
824 | 3D texture object. |
|
|
825 | |
|
|
826 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLTexture3D.html |
|
|
827 | |
|
|
828 | =item $ctx->gl_renderbuffer ($flags, $renderbuffer) |
|
|
829 | |
|
|
830 | Creates a new OpenCL::Image2D object that refers to the given OpenGL |
|
|
831 | render buffer. |
|
|
832 | |
|
|
833 | http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clCreateFromGLRenderbuffer.html |
696 | |
834 | |
697 | =item @formats = $ctx->supported_image_formats ($flags, $image_type) |
835 | =item @formats = $ctx->supported_image_formats ($flags, $image_type) |
698 | |
836 | |
699 | Returns a list of matching image formats - each format is an arrayref with |
837 | Returns a list of matching image formats - each format is an arrayref with |
700 | two values, $channel_order and $channel_type, in it. |
838 | two values, $channel_order and $channel_type, in it. |
… | |
… | |
831 | reference to an array of local work sizes, with the same number of |
969 | reference to an array of local work sizes, with the same number of |
832 | elements as @$global_work_size. |
970 | elements as @$global_work_size. |
833 | |
971 | |
834 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html> |
972 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueNDRangeKernel.html> |
835 | |
973 | |
836 | =item $ev = $queue->enqueue_marker |
974 | =item $ev = $queue->enqueue_marker ($wait_events...) |
837 | |
975 | |
838 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMarker.html> |
976 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMarker.html> |
|
|
977 | |
|
|
978 | =item $ev = $queue->enqueue_acquire_gl_objects ([object, ...], $wait_events...) |
|
|
979 | |
|
|
980 | Enqueues a list (an array-ref of OpenCL::Memory objects) to be acquired |
|
|
981 | for subsequent OpenCL usage. |
|
|
982 | |
|
|
983 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueAcquireGLObjects.html> |
|
|
984 | |
|
|
985 | =item $ev = $queue->enqueue_release_gl_objects ([object, ...], $wait_events...) |
|
|
986 | |
|
|
987 | Enqueues a list (an array-ref of OpenCL::Memory objects) to be released |
|
|
988 | for subsequent OpenGL usage. |
|
|
989 | |
|
|
990 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReleaseGLObjects.html> |
839 | |
991 | |
840 | =item $ev = $queue->enqueue_wait_for_events ($wait_events...) |
992 | =item $ev = $queue->enqueue_wait_for_events ($wait_events...) |
841 | |
993 | |
842 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html> |
994 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueWaitForEvents.html> |
843 | |
995 | |
… | |
… | |
931 | =item $int = $mem->offset |
1083 | =item $int = $mem->offset |
932 | |
1084 | |
933 | Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result. |
1085 | Calls C<clGetMemObjectInfo> with C<CL_MEM_OFFSET> and returns the result. |
934 | |
1086 | |
935 | =for gengetinfo end mem |
1087 | =for gengetinfo end mem |
|
|
1088 | |
|
|
1089 | =item ($type, $name) = $mem->gl_object_info |
|
|
1090 | |
|
|
1091 | Returns the OpenGL object type (e.g. OpenCL::GL_OBJECT_TEXTURE2D) and the |
|
|
1092 | object "name" (e.g. the texture name) used to create this memory object. |
|
|
1093 | |
|
|
1094 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clGetGLObjectInfo.html> |
936 | |
1095 | |
937 | =back |
1096 | =back |
938 | |
1097 | |
939 | =head2 THE OpenCL::Buffer CLASS |
1098 | =head2 THE OpenCL::Buffer CLASS |
940 | |
1099 | |
… | |
… | |
1000 | |
1159 | |
1001 | Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result. |
1160 | Calls C<clGetImageInfo> with C<CL_IMAGE_DEPTH> and returns the result. |
1002 | |
1161 | |
1003 | =for gengetinfo end image |
1162 | =for gengetinfo end image |
1004 | |
1163 | |
|
|
1164 | =for gengetinfo begin gl_texture |
|
|
1165 | |
|
|
1166 | =item $GLenum = $gl_texture->target |
|
|
1167 | |
|
|
1168 | Calls C<clGetGLTextureInfo> with C<CL_GL_TEXTURE_TARGET> and returns the result. |
|
|
1169 | |
|
|
1170 | =item $GLint = $gl_texture->gl_mipmap_level |
|
|
1171 | |
|
|
1172 | Calls C<clGetGLTextureInfo> with C<CL_GL_MIPMAP_LEVEL> and returns the result. |
|
|
1173 | |
|
|
1174 | =for gengetinfo end gl_texture |
|
|
1175 | |
1005 | =back |
1176 | =back |
1006 | |
1177 | |
1007 | =head2 THE OpenCL::Sampler CLASS |
1178 | =head2 THE OpenCL::Sampler CLASS |
1008 | |
1179 | |
1009 | =over 4 |
1180 | =over 4 |
… | |
… | |
1198 | |
1369 | |
1199 | This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>. |
1370 | This is a family of methods to set the kernel argument with the number C<$index> to the give C<$value>. |
1200 | |
1371 | |
1201 | TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>, |
1372 | TYPE is one of C<char>, C<uchar>, C<short>, C<ushort>, C<int>, C<uint>, |
1202 | C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>, |
1373 | C<long>, C<ulong>, C<half>, C<float>, C<double>, C<memory>, C<buffer>, |
1203 | C<image2d>, C<image3d>, C<sampler> or C<event>. |
1374 | C<image2d>, C<image3d>, C<sampler>, C<local> or C<event>. |
1204 | |
1375 | |
1205 | Chars and integers (including the half type) are specified as integers, |
1376 | Chars and integers (including the half type) are specified as integers, |
1206 | float and double as floating point values, memory/buffer/image2d/image3d |
1377 | float and double as floating point values, memory/buffer/image2d/image3d |
1207 | must be an object of that type or C<undef>, and sampler and event must be |
1378 | must be an object of that type or C<undef>, local-memory arguments are |
1208 | objects of that type. |
1379 | set by specifying the size, and sampler and event must be objects of that |
|
|
1380 | type. |
1209 | |
1381 | |
1210 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html> |
1382 | L<http://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clSetKernelArg.html> |
1211 | |
1383 | |
1212 | =back |
1384 | =back |
1213 | |
1385 | |
… | |
… | |
1302 | package OpenCL; |
1474 | package OpenCL; |
1303 | |
1475 | |
1304 | use common::sense; |
1476 | use common::sense; |
1305 | |
1477 | |
1306 | BEGIN { |
1478 | BEGIN { |
1307 | our $VERSION = '0.59'; |
1479 | our $VERSION = '0.96'; |
1308 | |
1480 | |
1309 | require XSLoader; |
1481 | require XSLoader; |
1310 | XSLoader::load (__PACKAGE__, $VERSION); |
1482 | XSLoader::load (__PACKAGE__, $VERSION); |
1311 | |
1483 | |
1312 | @OpenCL::Buffer::ISA = |
1484 | @OpenCL::Buffer::ISA = |