Adds the missing new class DirectNioBuffersSet

1 files changed, 110 insertions, 0 deletions

diff --git a/ardor3d-jogl/src/main/java/com/ardor3d/util/geom/jogl/DirectNioBuffersSet.java b/ardor3d-jogl/src/main/java/com/ardor3d/util/geom/jogl/DirectNioBuffersSet.java
new file mode 100644
index 0000000..c4a7264
--- /dev/null
+++ b/ardor3d-jogl/src/main/java/com/ardor3d/util/geom/jogl/DirectNioBuffersSet.java
@@ -0,0 +1,110 @@
+/**
+ * Copyright (c) 2008-2010 Ardor Labs, Inc.
+ *
+ * This file is part of Ardor3D.
+ *
+ * Ardor3D is free software: you can redistribute it and/or modify it 
+ * under the terms of its license which may be found in the accompanying
+ * LICENSE file or at <http://www.ardor3d.com/LICENSE>.
+ */
+
+package com.ardor3d.util.geom.jogl;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
+import com.ardor3d.util.geom.BufferUtils;
+import com.jogamp.common.nio.Buffers;
+
+/**
+ * <code>DirectNioBuffersSet</code> is a helper class for generating reusable long-lived direct nio buffers mainly for
+ * the renderer based on JOGL and its helpers. Those buffers replace many short-lived ones that had no chance to be
+ * garbage collected when the VM runs out of memory on its native heap but only when it runs out of memory on its Java
+ * heap. This class is not thread-safe.
+ */
+public final class DirectNioBuffersSet {
+
+    private static final int slicedByteBufferMaxSize = 4096;
+
+    private static final int transformBufferMaxSize = 16;
+
+    private static final int fboColorAttachmentBufferMaxSize = 64;
+
+    private static final int infoLogBufferMaxSize = 1024;// 1 KB
+
+    private static final int textureIdsBufferMaxSize = 256;// 1KB
+
+    private static final int vboIdsBufferMaxSize = 256;// 1KB
+
+    /** buffer containing all others, sliced to occupy only a single memory page */
+    private final ByteBuffer slicedByteBuffer;
+
+    private final IntBuffer singleIntBuffer;
+
+    private final FloatBuffer singleFloatBuffer;
+
+    private final FloatBuffer transformBuffer;
+
+    private final IntBuffer fboColorAttachmentBuffer;
+
+    private final ByteBuffer infoLogBuffer;
+
+    private final IntBuffer textureIdsBuffer;
+
+    private final IntBuffer vboIdsBuffer;
+
+    public DirectNioBuffersSet() {
+        slicedByteBuffer = BufferUtils.createByteBuffer(slicedByteBufferMaxSize);
+        slicedByteBuffer.position(0).limit(slicedByteBuffer.position() + Buffers.SIZEOF_INT);
+        singleIntBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder()).asIntBuffer();
+        slicedByteBuffer.position(slicedByteBuffer.limit()).limit(slicedByteBuffer.position() + Buffers.SIZEOF_FLOAT);
+        singleFloatBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder()).asFloatBuffer();
+        slicedByteBuffer.position(slicedByteBuffer.limit()).limit(
+                slicedByteBuffer.position() + (Buffers.SIZEOF_FLOAT * transformBufferMaxSize));
+        transformBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder()).asFloatBuffer();
+        slicedByteBuffer.position(slicedByteBuffer.limit()).limit(
+                slicedByteBuffer.position() + (Buffers.SIZEOF_INT * fboColorAttachmentBufferMaxSize));
+        fboColorAttachmentBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder()).asIntBuffer();
+        slicedByteBuffer.position(slicedByteBuffer.limit()).limit(
+                slicedByteBuffer.position() + (Buffers.SIZEOF_BYTE * infoLogBufferMaxSize));
+        infoLogBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder());
+        slicedByteBuffer.position(slicedByteBuffer.limit()).limit(
+                slicedByteBuffer.position() + (Buffers.SIZEOF_INT * textureIdsBufferMaxSize));
+        textureIdsBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder()).asIntBuffer();
+        slicedByteBuffer.position(slicedByteBuffer.limit()).limit(
+                slicedByteBuffer.position() + (Buffers.SIZEOF_INT * vboIdsBufferMaxSize));
+        vboIdsBuffer = slicedByteBuffer.slice().order(ByteOrder.nativeOrder()).asIntBuffer();
+        slicedByteBuffer.clear();
+    }
+
+    public IntBuffer getSingleIntBuffer() {
+        return singleIntBuffer;
+    }
+
+    public FloatBuffer getSingleFloatBuffer() {
+        return singleFloatBuffer;
+    }
+
+    public FloatBuffer getTransformBuffer() {
+        return transformBuffer;
+    }
+
+    public IntBuffer getFboColorAttachmentBuffer() {
+        return fboColorAttachmentBuffer;
+    }
+
+    public ByteBuffer getInfoLogBuffer() {
+        return infoLogBuffer;
+    }
+
+    public IntBuffer getTextureIdsBuffer() {
+        return textureIdsBuffer;
+    }
+
+    public IntBuffer getVboIdsBuffer() {
+        return vboIdsBuffer;
+    }
+
+}
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