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* Copyright (c) 2002-2010 LWJGL Project
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* * Redistributions in binary form must reproduce the above copyright
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package org.lwjgl.test.opencl;
import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
import org.lwjgl.LWJGLUtil;
import org.lwjgl.PointerBuffer;
import org.lwjgl.opencl.*;
import org.lwjgl.opencl.api.CLBufferRegion;
import java.nio.ByteBuffer;
import java.util.List;
import static org.lwjgl.opencl.CL10.*;
import static org.lwjgl.opencl.CL11.*;
/** Basic OpenCL test. */
public class HelloOpenCL {
public HelloOpenCL() {
}
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.getInfoInt(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);
clEnqueueNativeKernel(queue, new CLNativeKernel() {
protected void execute(final ByteBuffer[] memobjs) {
if ( memobjs == null )
System.out.println("OK, it's null");
else {
System.out.println("memobjs = " + memobjs.length);
for ( int k = 0; k < memobjs.length; k++ ) {
System.out.println("memobjs[" + k + "].remaining() = " + memobjs[k].remaining());
for ( int l = memobjs[k].position(); l < memobjs[k].limit(); l++ ) {
memobjs[k].put(l, (byte)l);
}
}
}
}
}, new CLMem[] { buffer }, new long[] { 128 }, null, null);
clFinish(queue);
}
}
clReleaseMemObject(buffer);
clReleaseContext(context);
}
}
} catch (LWJGLException le) {
die("Init", le.getMessage());
}
CL.destroy();
}
private static void printPlatformInfo(final CLPlatform platform, final String param_name, final int param) {
System.out.println("\t" + param_name + " = " + platform.getInfoString(param));
}
private static void printDeviceInfo(final CLDevice device, final String param_name, final int param) {
System.out.println("\t" + param_name + " = " + device.getInfoString(param));
}
private static void die(String kind, String description) {
System.out.println(kind + " error " + description + " occured");
}
/**
* main entry point
*
* @param args String array containing arguments
*/
public static void main(String[] args) {
new HelloOpenCL().execute();
}
}