more direct NIO.

3 files changed, 30 insertions, 24 deletions

diff --git a/src/com/mbien/opencl/CLContext.java b/src/com/mbien/opencl/CLContext.java
index 30197f37..ebd5821d 100644
--- a/src/com/mbien/opencl/CLContext.java
+++ b/src/com/mbien/opencl/CLContext.java
@@ -3,6 +3,7 @@ package com.mbien.opencl;
 import com.mbien.opencl.CLMemory.Mem;
 import com.mbien.opencl.CLSampler.AddressingMode;
 import com.mbien.opencl.CLSampler.FilteringMode;
+import com.sun.gluegen.runtime.BufferFactory;
 import com.sun.gluegen.runtime.CPU;
 import com.sun.gluegen.runtime.PointerBuffer;
 import java.io.BufferedReader;
@@ -80,7 +81,7 @@ public class CLContext implements CLResource {
      * The platform to be used is implementation dependent.
      */
     public static final CLContext create() {
-        Buffer properties = setupContextProperties(null);
+        PointerBuffer properties = setupContextProperties(null);
         return new CLContext(createContextFromType(properties, CL.CL_DEVICE_TYPE_ALL));
     }
 
@@ -120,7 +121,7 @@ public class CLContext implements CLResource {
             }
         }
 
-        Buffer properties = setupContextProperties(platform);
+        PointerBuffer properties = setupContextProperties(platform);
         return new CLContext(createContextFromType(properties, type));
     }
 
@@ -136,11 +137,11 @@ public class CLContext implements CLResource {
             deviceIDs[i] = devices[i].ID;
         }
 
-        Buffer properties = setupContextProperties(platform);
+        PointerBuffer properties = setupContextProperties(platform);
         return new CLContext(createContext(properties, deviceIDs));
     }
 
-    protected static final long createContextFromType(Buffer properties, long deviceType) {
+    protected static final long createContextFromType(PointerBuffer properties, long deviceType) {
 
         IntBuffer status = IntBuffer.allocate(1);
         long context = CLPlatform.getLowLevelBinding().clCreateContextFromType(properties, deviceType, null, null, status);
@@ -150,17 +151,24 @@ public class CLContext implements CLResource {
         return context;
     }
 
-    protected static final long createContext(Buffer properties, long[] devices) {
+    protected static final long createContext(PointerBuffer properties, long[] devices) {
 
-        IntBuffer status = IntBuffer.allocate(1);
-        long context = CLPlatform.getLowLevelBinding().clCreateContext(properties, devices, null, null, status);
+        IntBuffer status = BufferFactory.newDirectByteBuffer(4).asIntBuffer();
+        PointerBuffer pb = null;
+        if(devices != null && devices.length != 0) {
+            pb = PointerBuffer.allocateDirect(devices.length);
+            for (int i = 0; i < devices.length; i++) {
+                pb.put(i, devices[i]);
+            }
+        }
+        long context = CLPlatform.getLowLevelBinding().clCreateContext(properties, pb, null, null, status);
 
         checkForError(status.get(), "can not create CL context");
 
         return context;
     }
 
-    private static final Buffer setupContextProperties(CLPlatform platform) {
+    private static final PointerBuffer setupContextProperties(CLPlatform platform) {
 
         if(platform == null) {
             CLPlatform[] platforms = CLPlatform.listCLPlatforms();
@@ -168,16 +176,11 @@ public class CLContext implements CLResource {
                 platform = platforms[0];
         }
 
-        Buffer properties = null;
+        PointerBuffer properties = null;
         if(platform != null) {
-            if(CPU.is32Bit()){
-                properties = ByteBuffer.allocate(4*3).order(ByteOrder.nativeOrder())
-                    .putInt(CL.CL_CONTEXT_PLATFORM).putInt((int)platform.ID).putInt(0); // 0 terminated array
-            }else{
-                properties = LongBuffer.allocate(3)
-                    .put(CL.CL_CONTEXT_PLATFORM).put(platform.ID).put(0); // 0 terminated array
-            }
-            properties.rewind();
+            properties = PointerBuffer.allocateDirect(3)
+                                      .put(CL.CL_CONTEXT_PLATFORM).put(platform.ID).put(0) // 0 terminated array
+                                      .rewind();
         }
         return properties;
     }
diff --git a/src/com/mbien/opencl/CLGLContext.java b/src/com/mbien/opencl/CLGLContext.java
index 03367a35..a76c15ab 100644
--- a/src/com/mbien/opencl/CLGLContext.java
+++ b/src/com/mbien/opencl/CLGLContext.java
@@ -2,11 +2,11 @@ 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 java.nio.LongBuffer;
 import javax.media.nativewindow.DefaultGraphicsConfiguration;
 import javax.media.opengl.GLContext;
 
@@ -52,7 +52,7 @@ public final class CLGLContext extends CLContext {
         DefaultGraphicsConfiguration config = (DefaultGraphicsConfiguration)ctxImpl.getDrawableImpl()
              .getNativeWindow().getGraphicsConfiguration().getNativeGraphicsConfiguration();
 
-        LongBuffer properties = LongBuffer.allocate(5);
+        PointerBuffer properties = PointerBuffer.allocateDirect(5);
         if(glContext instanceof X11GLXContext) {
             long handle = config.getScreen().getDevice().getHandle();
             glID = ((X11GLXContext)glContext).getContext();
diff --git a/src/com/mbien/opencl/CLProgram.java b/src/com/mbien/opencl/CLProgram.java
index 0c4325ee..6f1ed551 100644
--- a/src/com/mbien/opencl/CLProgram.java
+++ b/src/com/mbien/opencl/CLProgram.java
@@ -241,12 +241,15 @@ public class CLProgram implements CLResource {
             releaseKernels();
         }
 
-        long[] deviceIDs = null;
+        PointerBuffer deviceIDs = null;
+        int count = 0;
         if(devices != null) {
-            deviceIDs = new long[devices.length];
-            for (int i = 0; i < deviceIDs.length; i++) {
-                deviceIDs[i] = devices[i].ID;
+            deviceIDs = PointerBuffer.allocateDirect(devices.length);
+            for (int i = 0; i < devices.length; i++) {
+                deviceIDs.put(i, devices[i].ID);
             }
+            deviceIDs.rewind();
+            count = devices.length;
         }
 
         // invalidate build status
@@ -254,7 +257,7 @@ public class CLProgram implements CLResource {
         executable = false;
 
         // Build the program
-        int ret = cl.clBuildProgram(ID, deviceIDs, options, null, null);
+        int ret = cl.clBuildProgram(ID, count, deviceIDs, options, null, null);
 
         if(ret != CL_SUCCESS) {
             throw new CLException(ret, "\n"+getBuildLog());