New buffer utils

src/java/org/lwjgl/BufferUtils.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2002 Light Weight Java Game Library 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 'Light Weight Java Game Library' 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;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+import java.nio.ShortBuffer;
+
+/**
+ * $Id$
+ *
+ * Some often-used Buffer code for creating native buffers of the appropriate size.
+
+ * @author $Author$
+ * @version $Revision$
+ */
+
+public final class BufferUtils {
+	
+	/**
+	 * Construct a direct native-ordered bytebuffer with the specified size.
+	 * @param size The size, in bytes
+	 * @return a ByteBuffer
+	 */	
+	public static ByteBuffer createByteBuffer(int size) {
+		return ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder());
+	}
+	
+	/**
+	 * Construct a direct native-order shortbuffer with the specified number
+	 * of elements.
+	 * @param size The size, in shorts
+	 * @return a ShortBuffer
+	 */
+	public static ShortBuffer createShortBuffer(int size) {
+		return createByteBuffer(size << 1).asShortBuffer();
+	}
+
+	/**
+	 * Construct a direct native-order shortbuffer with the specified number
+	 * of elements.
+	 * @param size The size, in shorts
+	 * @return a ShortBuffer
+	 */
+	public static IntBuffer createIntBuffer(int size) {
+		return createByteBuffer(size << 2).asIntBuffer();
+	}
+
+	/**
+	 * Construct a direct native-order shortbuffer with the specified number
+	 * of elements.
+	 * @param size The size, in shorts
+	 * @return a ShortBuffer
+	 */
+	public static FloatBuffer createFloatBuffer(int size) {
+		return createByteBuffer(size << 2).asFloatBuffer();
+	}
+
+}