Examples with CLBufferRegion org.lwjgl.opencl.api.CLBufferRegion used on opensource projects

Example 1 with CLBufferRegion

use of org.lwjgl.opencl.api.CLBufferRegion in project lwjgl by LWJGL.

the class HelloOpenCL method execute.

protected static void execute() {
    try {
        CL.create();
        final List<CLPlatform> platforms = CLPlatform.getPlatforms();
        if (platforms == null)
            throw new RuntimeException("No OpenCL platforms found.");
        for (CLPlatform platform : platforms) {
            System.out.println("\n-------------------------");
            System.out.println("NEW PLATFORM: " + platform.getPointer());
            System.out.println(CLCapabilities.getPlatformCapabilities(platform));
            System.out.println("-------------------------");
            printPlatformInfo(platform, "CL_PLATFORM_PROFILE", CL_PLATFORM_PROFILE);
            printPlatformInfo(platform, "CL_PLATFORM_VERSION", CL_PLATFORM_VERSION);
            printPlatformInfo(platform, "CL_PLATFORM_NAME", CL_PLATFORM_NAME);
            printPlatformInfo(platform, "CL_PLATFORM_VENDOR", CL_PLATFORM_VENDOR);
            printPlatformInfo(platform, "CL_PLATFORM_EXTENSIONS", CL_PLATFORM_EXTENSIONS);
            System.out.println("");
            final PointerBuffer ctxProps = BufferUtils.createPointerBuffer(3);
            ctxProps.put(CL_CONTEXT_PLATFORM).put(platform.getPointer()).put(0).flip();
            final List<CLDevice> devices = platform.getDevices(CL_DEVICE_TYPE_ALL);
            for (CLDevice device : devices) {
                final CLDeviceCapabilities caps = CLCapabilities.getDeviceCapabilities(device);
                System.out.println("\n\tNEW DEVICE: " + device.getPointer());
                System.out.println(caps);
                System.out.println("\t-------------------------");
                System.out.println("\tCL_DEVICE_TYPE = " + device.getInfoLong(CL_DEVICE_TYPE));
                System.out.println("\tCL_DEVICE_VENDOR_ID = " + device.getInfoInt(CL_DEVICE_VENDOR_ID));
                System.out.println("\tCL_DEVICE_MAX_COMPUTE_UNITS = " + device.getInfoInt(CL_DEVICE_MAX_COMPUTE_UNITS));
                System.out.println("\tCL_DEVICE_MAX_WORK_ITEM_DIMENSIONS = " + device.getInfoInt(CL_DEVICE_MAX_WORK_ITEM_DIMENSIONS));
                //CL10.clGetDeviceInfo(device, CL10.CL_DEVICE_MAX_WORK_ITEM_SIZES, info, size_ret);
                //System.out.println("\tCL_DEVICE_MAX_WORK_ITEM_SIZES = " + info.getInt(0));
                System.out.println("\tCL_DEVICE_MAX_WORK_GROUP_SIZE = " + device.getInfoSize(CL_DEVICE_MAX_WORK_GROUP_SIZE));
                System.out.println("\tCL_DEVICE_MAX_CLOCK_FREQUENCY = " + device.getInfoInt(CL_DEVICE_MAX_CLOCK_FREQUENCY));
                System.out.println("\tCL_DEVICE_ADDRESS_BITS = " + device.getInfoInt(CL_DEVICE_ADDRESS_BITS));
                System.out.println("\tCL_DEVICE_AVAILABLE = " + device.getInfoBoolean(CL_DEVICE_AVAILABLE));
                System.out.println("\tCL_DEVICE_COMPILER_AVAILABLE = " + device.getInfoBoolean(CL_DEVICE_COMPILER_AVAILABLE));
                printDeviceInfo(device, "CL_DEVICE_NAME", CL_DEVICE_NAME);
                printDeviceInfo(device, "CL_DEVICE_VENDOR", CL_DEVICE_VENDOR);
                printDeviceInfo(device, "CL_DRIVER_VERSION", CL_DRIVER_VERSION);
                printDeviceInfo(device, "CL_DEVICE_PROFILE", CL_DEVICE_PROFILE);
                printDeviceInfo(device, "CL_DEVICE_VERSION", CL_DEVICE_VERSION);
                printDeviceInfo(device, "CL_DEVICE_EXTENSIONS", CL_DEVICE_EXTENSIONS);
                if (caps.OpenCL11)
                    printDeviceInfo(device, "CL_DEVICE_OPENCL_C_VERSION", CL_DEVICE_OPENCL_C_VERSION);
                CLContext context = clCreateContext(ctxProps, device, new CLContextCallback() {

                    protected void handleMessage(final String errinfo, final ByteBuffer private_info) {
                        System.out.println("IN CLContextCallback :: " + errinfo);
                    }
                }, null);
                CLMem buffer = clCreateBuffer(context, CL_MEM_READ_ONLY, 128, null);
                if (caps.OpenCL11) {
                    clSetMemObjectDestructorCallback(buffer, new CLMemObjectDestructorCallback() {

                        protected void handleMessage(final long memobj) {
                            System.out.println("FIRST Buffer destructed: " + memobj);
                        }
                    });
                    clSetMemObjectDestructorCallback(buffer, new CLMemObjectDestructorCallback() {

                        protected void handleMessage(final long memobj) {
                            System.out.println("SECOND Buffer destructed: " + memobj);
                        }
                    });
                }
                if (caps.OpenCL11) {
                    CLMem subbuffer = buffer.createSubBuffer(CL_MEM_READ_ONLY, CL_BUFFER_CREATE_TYPE_REGION, new CLBufferRegion(0, 64), null);
                    clSetMemObjectDestructorCallback(subbuffer, new CLMemObjectDestructorCallback() {

                        protected void handleMessage(final long memobj) {
                            System.out.println("Sub Buffer destructed: " + memobj);
                        }
                    });
                }
                clRetainMemObject(buffer);
                if (LWJGLUtil.getPlatform() != LWJGLUtil.PLATFORM_MACOSX) {
                    // TODO: Native kernels crash on MacOSX, disable this until we can debug properly.
                    final long exec_caps = device.getInfoLong(CL_DEVICE_EXECUTION_CAPABILITIES);
                    if ((exec_caps & CL_EXEC_NATIVE_KERNEL) == CL_EXEC_NATIVE_KERNEL) {
                        System.out.println("-TRYING TO EXEC NATIVE KERNEL-");
                        final CLCommandQueue queue = clCreateCommandQueue(context, device, 0, null);
                        final PointerBuffer ev = BufferUtils.createPointerBuffer(1);
                        clEnqueueNativeKernel(queue, new CLNativeKernel() {

                            protected void execute(final ByteBuffer[] memobjs) {
                                System.out.println("\tmemobjs.length = " + memobjs.length);
                                for (int k = 0; k < memobjs.length; k++) {
                                    System.out.println("\tmemobjs[" + k + "].remaining() = " + memobjs[k].remaining());
                                    for (int l = memobjs[k].position(); l < memobjs[k].limit(); l++) {
                                        memobjs[k].put(l, (byte) l);
                                    }
                                }
                                System.out.println("\tNative kernel done.");
                            }
                        }, new CLMem[] { buffer }, new long[] { 128 }, null, ev);
                        final CLEvent e = queue.getCLEvent(ev.get(0));
                        clSetEventCallback(e, CL_COMPLETE, new CLEventCallback() {

                            protected void handleMessage(final CLEvent event, final int event_command_exec_status) {
                                System.out.println("\t\tEvent callback status: " + getEventStatusName(event_command_exec_status));
                            }
                        });
                        int status = e.getInfoInt(CL_EVENT_COMMAND_EXECUTION_STATUS);
                        System.out.println("NATIVE KERNEL STATUS: " + getEventStatusName(status));
                        clFlush(queue);
                        do {
                            int newStatus = e.getInfoInt(CL_EVENT_COMMAND_EXECUTION_STATUS);
                            if (newStatus != status) {
                                status = newStatus;
                                System.out.println("NATIVE KERNEL STATUS: " + getEventStatusName(status));
                            }
                        } while (// Busy-spin until we're done
                        status != CL_SUCCESS);
                        clReleaseEvent(e);
                    }
                }
                clReleaseMemObject(buffer);
                clReleaseContext(context);
            }
        }
    } catch (LWJGLException le) {
        die("Init", le.getMessage());
    }
    CL.destroy();
}