/*
* Copyright (c) 2002-2010 LWJGL Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'LWJGL' nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.lwjgl.opencl;
import org.lwjgl.LWJGLException;
import org.lwjgl.LWJGLUtil;
import org.lwjgl.Sys;
import java.nio.ByteBuffer;
/**
* LWJGL users must use this class to initialize OpenCL
* before using any other class in the org.lwjgl.opencl package.
*
* @author Spasi
*/
public final class CL {
private static boolean created;
static {
Sys.initialize();
}
private CL() {
}
/**
* Native method to create CL instance
*
* @param oclPaths Array of strings containing paths to search for OpenCL library
*/
private static native void nCreate(String oclPaths) throws LWJGLException;
/**
* Native method to create CL instance from the Mac OS X 10.4 OpenCL framework.
* It is only defined in the Mac OS X native library.
*/
private static native void nCreateDefault() throws LWJGLException;
/** Native method the destroy the CL */
private static native void nDestroy();
/** @return true if CL has been created */
public static boolean isCreated() {
return created;
}
public static void create() throws LWJGLException {
if ( created )
return;
//throw new IllegalStateException("OpenCL has already been created.");
final String libname;
final String[] library_names;
switch ( LWJGLUtil.getPlatform() ) {
case LWJGLUtil.PLATFORM_WINDOWS:
libname = "OpenCL";
library_names = new String[] { "OpenCL.dll" };
break;
case LWJGLUtil.PLATFORM_LINUX:
libname = "OpenCL";
library_names = new String[] { "libOpenCL64.so", "libOpenCL.so" }; // TODO: Fix this
break;
case LWJGLUtil.PLATFORM_MACOSX:
libname = "OpenCL";
library_names = new String[] { "OpenCL.dylib" }; // TODO: Fix this
break;
default:
throw new LWJGLException("Unknown platform: " + LWJGLUtil.getPlatform());
}
final String[] oclPaths = LWJGLUtil.getLibraryPaths(libname, library_names, CL.class.getClassLoader());
LWJGLUtil.log("Found " + oclPaths.length + " OpenCL paths");
for ( String oclPath : oclPaths ) {
try {
nCreate(oclPath);
created = true;
break;
} catch (LWJGLException e) {
LWJGLUtil.log("Failed to load " + oclPath + ": " + e.getMessage());
}
}
if ( !created && LWJGLUtil.getPlatform() == LWJGLUtil.PLATFORM_MACOSX ) {
// Try to load OpenCL from the framework instead
nCreateDefault();
created = true;
}
if ( !created )
throw new LWJGLException("Could not locate OpenCL library.");
if ( !CLCapabilities.OpenCL10 )
throw new RuntimeException("OpenCL 1.0 not supported.");
}
public static void destroy() {
}
/**
* Helper method to get a pointer to a named function with aliases in the OpenCL library.
*
* @param aliases the function name aliases.
*
* @return the function pointer address
*/
static long getFunctionAddress(String[] aliases) {
for ( String aliase : aliases ) {
long address = getFunctionAddress(aliase);
if ( address != 0 )
return address;
}
return 0;
}
static native long getFunctionAddress(String name);
static native ByteBuffer getHostBuffer(final long address, final int size);
private static native void resetNativeStubs(Class clazz);
}