added sources for Slick

Former-commit-id: 1647fa32ef6894bd7db44f741f07c2f4dcdf9054
Former-commit-id: 0e5810dcfbe1fd59b13e7cabe9f1e93c5542da2d

lib/slick-source/org/newdawn/slick/opengl/EmptyImageData.java

@@ -0,0 +1,71 @@
+package org.newdawn.slick.opengl;
+
+import java.nio.ByteBuffer;
+
+import org.lwjgl.BufferUtils;
+
+/**
+ * An image data implementation which represents an empty texture
+ * 
+ * @author kevin
+ */
+public class EmptyImageData implements ImageData {
+	/** The width of the data */
+	private int width;
+	/** The height of the data */
+	private int height;
+	
+	/**
+	 * Create an empty image data source
+	 * 
+	 * @param width The width of the source
+	 * @param height The height of the source
+	 */
+	public EmptyImageData(int width, int height) {
+		this.width = width;
+		this.height = height;
+	}
+	
+	/**
+	 * @see org.newdawn.slick.opengl.ImageData#getDepth()
+	 */
+	public int getDepth() {
+		return 32;
+	}
+
+	/**
+	 * @see org.newdawn.slick.opengl.ImageData#getHeight()
+	 */
+	public int getHeight() {
+		return height;
+	}
+
+	/**
+	 * @see org.newdawn.slick.opengl.ImageData#getImageBufferData()
+	 */
+	public ByteBuffer getImageBufferData() {
+		return BufferUtils.createByteBuffer(getTexWidth() * getTexHeight() * 4);
+	}
+
+	/**
+	 * @see org.newdawn.slick.opengl.ImageData#getTexHeight()
+	 */
+	public int getTexHeight() {
+		return InternalTextureLoader.get2Fold(height);
+	}
+
+	/**
+	 * @see org.newdawn.slick.opengl.ImageData#getTexWidth()
+	 */
+	public int getTexWidth() {
+		return InternalTextureLoader.get2Fold(width);
+	}
+
+	/**
+	 * @see org.newdawn.slick.opengl.ImageData#getWidth()
+	 */
+	public int getWidth() {
+		return width;
+	}
+
+}