Merge pull request #588 from JavaSaBr/added_lwjgl3_allocator

implemented LWJGL3 BufferAllocator

jme3-core/src/main/java/com/jme3/util/BufferAllocatorFactory.java

@@ -0,0 +1,31 @@
+package com.jme3.util;
+
+import com.jme3.system.Annotations.Internal;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * The factory of buffer allocators.
+ *
+ * @author JavaSaBR
+ */
+@Internal
+public class BufferAllocatorFactory {
+
+    public static final String PROPERTY_BUFFER_ALLOCATOR_IMPLEMENTATION = "com.jme3.BufferAllocatorImplementation";
+
+    private static final Logger LOGGER = Logger.getLogger(BufferAllocatorFactory.class.getName());
+
+    @Internal
+    protected static BufferAllocator create() {
+
+        final String className = System.getProperty(PROPERTY_BUFFER_ALLOCATOR_IMPLEMENTATION, ReflectionAllocator.class.getName());
+        try {
+            return (BufferAllocator) Class.forName(className).newInstance();
+        } catch (final Throwable e) {
+            LOGGER.log(Level.WARNING, "Unable to access {0}", className);
+            return new PrimitiveAllocator();
+        }
+    }
+}

jme3-core/src/main/java/com/jme3/util/BufferUtils.java

@@ -31,6 +31,12 @@
  */
 package com.jme3.util;
 
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.Quaternion;
+import com.jme3.math.Vector2f;
+import com.jme3.math.Vector3f;
+import com.jme3.math.Vector4f;
+
 import java.io.UnsupportedEncodingException;
 import java.lang.ref.PhantomReference;
 import java.lang.ref.Reference;
@@ -45,12 +51,6 @@ import java.nio.LongBuffer;
 import java.nio.ShortBuffer;
 import java.util.concurrent.ConcurrentHashMap;
 
-import com.jme3.math.ColorRGBA;
-import com.jme3.math.Quaternion;
-import com.jme3.math.Vector2f;
-import com.jme3.math.Vector3f;
-import com.jme3.math.Vector4f;
-
 /**
  * <code>BufferUtils</code> is a helper class for generating nio buffers from
  * jME data classes such as Vectors and ColorRGBA.
@@ -59,35 +59,17 @@ import com.jme3.math.Vector4f;
  * @version $Id: BufferUtils.java,v 1.16 2007/10/29 16:56:18 nca Exp $
  */
 public final class BufferUtils {
-    private static BufferAllocator allocator = new PrimitiveAllocator();
+
+    /**
+     * The field should be final to support thread-safe.
+     */
+    private static final BufferAllocator allocator = BufferAllocatorFactory.create();
 
     private static boolean trackDirectMemory = false;
     private static ReferenceQueue<Buffer> removeCollected = new ReferenceQueue<Buffer>();
     private static ConcurrentHashMap<BufferInfo, BufferInfo> trackedBuffers = new ConcurrentHashMap<BufferInfo, BufferInfo>();
     static ClearReferences cleanupthread;
 
-    private static boolean used;
-
-    static {
-        try {
-            allocator = new ReflectionAllocator();
-        } catch (Throwable t) {
-            t.printStackTrace();
-            System.err.println("Error using ReflectionAllocator");
-        }
-    }
-
-    /**
-     * Warning! do only set this before JME is started!
-     */
-    public static void setAllocator(BufferAllocator allocator) {
-        if (used) {
-            throw new IllegalStateException(
-                    "An Buffer was already allocated, since it is quite likely that other dispose methods will create native dangling pointers or other fun things, this is forbidden to be changed at runtime");
-        }
-        BufferUtils.allocator = allocator;
-    }
-
     /**
      * Set it to true if you want to enable direct memory tracking for debugging
      * purpose. Default is false. To print direct memory usage use
@@ -124,7 +106,7 @@ public final class BufferUtils {
     }
 
     private static void onBufferAllocated(Buffer buffer) {
-        used = true;
+
         if (BufferUtils.trackDirectMemory) {
             if (BufferUtils.cleanupthread == null) {
                 BufferUtils.cleanupthread = new ClearReferences();

jme3-lwjgl3/src/main/java/com/jme3/system/lwjgl/LwjglContext.java

@@ -32,6 +32,10 @@
 
 package com.jme3.system.lwjgl;
 
+import static org.lwjgl.opencl.CL10.CL_CONTEXT_PLATFORM;
+import static org.lwjgl.opengl.GL.createCapabilities;
+import static org.lwjgl.opengl.GL11.glGetInteger;
+
 import com.jme3.input.lwjgl.GlfwJoystickInput;
 import com.jme3.input.lwjgl.GlfwKeyInput;
 import com.jme3.input.lwjgl.GlfwMouseInput;
@@ -48,26 +52,41 @@ import com.jme3.renderer.lwjgl.LwjglGL;
 import com.jme3.renderer.lwjgl.LwjglGLExt;
 import com.jme3.renderer.lwjgl.LwjglGLFboEXT;
 import com.jme3.renderer.lwjgl.LwjglGLFboGL3;
-import com.jme3.renderer.opengl.*;
+import com.jme3.renderer.opengl.GL;
-import com.jme3.system.*;
+import com.jme3.renderer.opengl.GL2;
-import java.nio.IntBuffer;
+import com.jme3.renderer.opengl.GL3;
-import java.util.ArrayList;
+import com.jme3.renderer.opengl.GL4;
-import java.util.List;
+import com.jme3.renderer.opengl.GLDebugDesktop;
-import java.util.concurrent.atomic.AtomicBoolean;
+import com.jme3.renderer.opengl.GLExt;
-import java.util.logging.Level;
+import com.jme3.renderer.opengl.GLFbo;
-import java.util.logging.Logger;
+import com.jme3.renderer.opengl.GLRenderer;
+import com.jme3.renderer.opengl.GLTiming;
+import com.jme3.renderer.opengl.GLTimingState;
+import com.jme3.renderer.opengl.GLTracer;
+import com.jme3.system.AppSettings;
+import com.jme3.system.JmeContext;
+import com.jme3.system.SystemListener;
+import com.jme3.system.Timer;
+import com.jme3.util.BufferAllocatorFactory;
+import com.jme3.util.LWJGLBufferAllocator;
+
 import org.lwjgl.PointerBuffer;
 import org.lwjgl.glfw.GLFW;
-import org.lwjgl.opencl.*;
+import org.lwjgl.opencl.APPLEGLSharing;
+import org.lwjgl.opencl.CL10;
+import org.lwjgl.opencl.KHRGLSharing;
 import org.lwjgl.opengl.ARBDebugOutput;
 import org.lwjgl.opengl.ARBFramebufferObject;
 import org.lwjgl.opengl.EXTFramebufferMultisample;
 import org.lwjgl.opengl.GLCapabilities;
+import org.lwjgl.system.Platform;
 
-import static org.lwjgl.glfw.GLFW.GLFW_TRUE;
+import java.nio.IntBuffer;
-import static org.lwjgl.opencl.CL10.CL_CONTEXT_PLATFORM;
+import java.util.ArrayList;
-import static org.lwjgl.opengl.GL.createCapabilities;
+import java.util.List;
-import static org.lwjgl.opengl.GL11.glGetInteger;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  * A LWJGL implementation of a graphics context.
@@ -76,6 +95,13 @@ public abstract class LwjglContext implements JmeContext {
 
     private static final Logger logger = Logger.getLogger(LwjglContext.class.getName());
 
+    static {
+        final String implementation = BufferAllocatorFactory.PROPERTY_BUFFER_ALLOCATOR_IMPLEMENTATION;
+        if(System.getProperty(implementation) == null) {
+            System.setProperty(implementation, LWJGLBufferAllocator.class.getName());
+        }
+    }
+
     public static final boolean CL_GL_SHARING_POSSIBLE = true;
     
     protected static final String THREAD_NAME = "jME3 Main";
@@ -205,8 +231,6 @@ public abstract class LwjglContext implements JmeContext {
      *
      * Copied from the old release
      *
-     * @param filter the platform filter
-     *
      * @return the available platforms
      */
     private static long[] getPlatforms() {
@@ -321,7 +345,7 @@ public abstract class LwjglContext implements JmeContext {
         try {
             long c = createContext(platform.getPlatform(), devices, window);
             clContext = new com.jme3.opencl.lwjgl.LwjglContext(c, (List<LwjglDevice>) choosenDevices);
-        } catch (Exception ex) {
+        } catch (final Exception ex) {
             logger.log(Level.SEVERE, "Unable to create OpenCL context", ex);
             return;
         }
@@ -338,7 +362,7 @@ public abstract class LwjglContext implements JmeContext {
         //https://github.com/glfw/glfw/issues/104
         //https://github.com/LWJGL/lwjgl3/blob/master/modules/core/src/test/java/org/lwjgl/demo/opencl/Mandelbrot.java
         //TODO: test on Linus and MacOSX
-        switch (org.lwjgl.system.Platform.get()) {
+        switch (Platform.get()) {
             case WINDOWS:
                 properties
                         .put(KHRGLSharing.CL_GL_CONTEXT_KHR)
@@ -446,5 +470,4 @@ public abstract class LwjglContext implements JmeContext {
     public Context getOpenCLContext() {
         return clContext;
     }
-
 }

jme3-lwjgl3/src/main/java/com/jme3/util/LWJGLBufferAllocator.java

@@ -0,0 +1,24 @@
+package com.jme3.util;
+
+import org.lwjgl.system.MemoryUtil;
+
+import java.nio.Buffer;
+import java.nio.ByteBuffer;
+
+/**
+ * The implementation of the {@link BufferAllocator} which use {@link MemoryUtil} to manage memory.
+ *
+ * @author JavaSaBr
+ */
+public class LWJGLBufferAllocator implements BufferAllocator {
+
+    @Override
+    public void destroyDirectBuffer(final Buffer buffer) {
+        MemoryUtil.memFree(buffer);
+    }
+
+    @Override
+    public ByteBuffer allocate(final int size) {
+        return MemoryUtil.memAlloc(size);
+    }
+}