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package com.mbien.opencl;
import java.nio.Buffer;
import com.mbien.opencl.CLMemory.Mem;
import com.sun.gluegen.runtime.PointerBuffer;
import com.sun.opengl.impl.GLContextImpl;
import com.sun.opengl.impl.macosx.cgl.MacOSXCGLContext;
import com.sun.opengl.impl.windows.wgl.WindowsWGLContext;
import com.sun.opengl.impl.x11.glx.X11GLXContext;
import javax.media.nativewindow.DefaultGraphicsConfiguration;
import javax.media.opengl.GLContext;
import static com.mbien.opencl.CLGLI.*;
/**
* OpenCL Context supporting interoperablity between JOGL and JOCL.
* @author Michael Bien
*/
public final class CLGLContext extends CLContext {
final long glID;
private CLGLContext(long clContextID, long glContextID) {
super(clContextID);
this.glID = glContextID;
}
/**
* Creates a shared context on all available devices (CL_DEVICE_TYPE_ALL).
*/
public static final CLGLContext create(GLContext glContext) {
return create(glContext, (CLPlatform)null, CLDevice.Type.ALL);
}
/**
* Creates a shared context on the specified platform on all available devices (CL_DEVICE_TYPE_ALL).
*/
public static CLGLContext create(GLContext glContext, CLPlatform platform) {
return create(glContext, platform, CLDevice.Type.ALL);
}
public static CLGLContext create(GLContext glContext, CLDevice.Type... deviceTypes) {
return create(glContext, null, deviceTypes);
}
/**
* Creates a shared context on the specified devices.
* The platform to be used is implementation dependent.
*/
public static final CLGLContext create(GLContext glContext, CLDevice... devices) {
return create(glContext, null, devices);
}
/**
* Creates a shared context on the specified platform and with the specified
* device types.
*/
private static final CLGLContext create(GLContext glContext, CLPlatform platform, CLDevice.Type... deviceTypes) {
long[] glID = new long[1];
PointerBuffer properties = setupContextProperties(glContext, platform, glID);
long clID = createContextFromType(properties, toDeviceBitmap(deviceTypes));
return new CLGLContext(clID, glID[0]);
}
/**
* Creates a shared context on the specified platform and with the specified
* devices.
*/
private static final CLGLContext create(GLContext glContext, CLPlatform platform, CLDevice... devices) {
long[] glID = new long[1];
PointerBuffer properties = setupContextProperties(glContext, platform, glID);
long clID = createContext(properties, devices);
return new CLGLContext(clID, glID[0]);
}
private static final PointerBuffer setupContextProperties(GLContext glContext, CLPlatform platform, long[] glID) {
if(platform == null) {
platform = CLPlatform.getDefault();
}
if(platform == null) {
throw new RuntimeException("no OpenCL installation found");
}
GLContextImpl ctxImpl = (GLContextImpl)glContext;
DefaultGraphicsConfiguration config = (DefaultGraphicsConfiguration)ctxImpl.getDrawableImpl()
.getNativeWindow().getGraphicsConfiguration().getNativeGraphicsConfiguration();
PointerBuffer properties = null;
if(glContext instanceof X11GLXContext) {
properties = PointerBuffer.allocateDirect(7);
long handle = config.getScreen().getDevice().getHandle();
glID[0] = ((X11GLXContext)glContext).getContext();
properties.put(CL_GL_CONTEXT_KHR).put(glID[0])
.put(CL_GLX_DISPLAY_KHR).put(handle)
.put(CL_CONTEXT_PLATFORM).put(platform.ID);
}else if(glContext instanceof WindowsWGLContext) {
// TODO test on windows
//WIN32
//cl_context_properties props[] = {
// CL_GL_CONTEXT_KHR, (cl_context_properties)0,
// CL_WGL_HDC_KHR, (cl_context_properties)0,
// CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform, 0};
properties = PointerBuffer.allocateDirect(7);
long handle = config.getScreen().getDevice().getHandle();
glID[0] = ((WindowsWGLContext)glContext).getHGLRC();
properties.put(CL_GL_CONTEXT_KHR).put(glID[0])
.put(CL_WGL_HDC_KHR).put(handle)
.put(CL_CONTEXT_PLATFORM).put(platform.ID);
}else if(glContext instanceof MacOSXCGLContext) {
// TODO test on mac
//MACOSX
//cl_context_properties props[] = {
// CL_CGL_SHAREGROUP_KHR, (cl_context_properties)0,
// CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform, 0};
properties = PointerBuffer.allocateDirect(5);
glID[0] = ((MacOSXCGLContext)glContext).getCGLContext();
properties.put(CL_CGL_SHAREGROUP_KHR).put(glID[0])
.put(CL_CONTEXT_PLATFORM).put(platform.ID);
}else{
throw new RuntimeException("unsupported GLContext: "+glContext);
}
return properties.put(0).rewind(); // 0 terminated array
}
public final <B extends Buffer> CLGLBuffer<B> createFromGLBuffer(B directBuffer, int glBuffer, Mem... flags) {
return createFromGLBuffer(directBuffer, glBuffer, Mem.flagsToInt(flags));
}
public final <B extends Buffer> CLGLBuffer<B> createFromGLBuffer(B directBuffer, int glBuffer, int flags) {
CLGLBuffer<B> buffer = CLGLBuffer.create(this, directBuffer, flags, glBuffer);
memoryObjects.add(buffer);
return buffer;
}
}
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