src/com/plusminus/craft/Texture.java - minecraft/minecraftxray - Rivoreo Source Code Repositories

 /**
  * Copyright (c) 2010-2011, Vincent Vollers and Christopher J. Kucera
  * 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 the Minecraft X-Ray team 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 VINCENT VOLLERS OR CJ KUCERA 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 com.plusminus.craft;

 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.color.ColorSpace;
 import java.awt.image.BufferedImage;
 import java.awt.image.ColorModel;
 import java.awt.image.ComponentColorModel;
 import java.awt.image.ComponentSampleModel;
 import java.awt.image.DataBuffer;
 import java.awt.image.DataBufferByte;
 import java.awt.image.Raster;
 import java.awt.image.SampleModel;
 import java.awt.image.WritableRaster;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.Hashtable;

 import org.lwjgl.opengl.GL11;

 /***
  * Represents a texture with methods to quickly (!) update it from a given BufferedImage
  *
  * I took this from a previous project
  *
  * The most interesting about this is the 'update' method, which will redraw an image into a texture compatible buffer and update the texture
  *
  * @todo more documentation
  * @author Vincent
  */
 public class Texture {
 	private BufferedImage image;

 	private WritableRaster raster;

 	private BufferedImage texImage;

 	private byte[] iBuffer;

 	private byte[] tBuffer;

 	private ByteBuffer textureCompatibleBuffer;

 	private int[] bankOffsets;

 	private int textureWidth = -1;

 	private int textureHeight = -1;

 	private int imageWidth;

 	private int imageHeight;

 	private int xScaleUnit;

 	private int yScaleUnit;

 	private ComponentSampleModel imageSampleModel;

 	private int scanLineStride;

 	private int pixelStride;

 	private int frameNum;

 	private long playTime;

 	private long delayTime;

 	private boolean flip = false;

 	private Object syncObj = new Object();

 	private int textureId = -1;

 	/*public static final ColorModel glAlphaColorModel = new ComponentColorModel(
 			ColorSpace.getInstance(ColorSpace.CS_sRGB),
 			new int[] { 8, 8, 8, 8 }, true, false,
 			ComponentColorModel.TRANSLUCENT, DataBuffer.TYPE_BYTE);

 	public static final ColorModel glColorModel = new ComponentColorModel(
 			ColorSpace.getInstance(ColorSpace.CS_sRGB),
 			new int[] { 8, 8, 8, 0 }, false, false, ComponentColorModel.OPAQUE,
 			DataBuffer.TYPE_BYTE);*/

 	public Texture(BufferedImage image, int frameNum, long playTime,
 			long delayTime) {
 		// System.out.println(image.hashCode());
 		this.image = image;
 		this.frameNum = frameNum;
 		this.playTime = playTime;
 		this.delayTime = delayTime;
 		this.textureCompatibleBuffer = null;
 	}

 	public Texture(BufferedImage image) {
 		// System.out.println(image.hashCode());
 		this.image = image;
 		this.frameNum = -1;
 		this.playTime = -1;
 		this.delayTime = -1;
 		this.textureCompatibleBuffer = null;
 	}

 	public int getTextureId() {
 		return this.textureId;
 	}

 	public void setTextureId(int id) {
 		this.textureId = id;
 	}

 	public void setFlip(boolean flip) {
 		this.flip = flip;
 	}

 	public boolean getFlip() {
 		return flip;
 	}

 	public int getTextureWidth() {
 		return this.textureWidth;
 	}

 	public int getTextureHeight() {
 		return this.textureHeight;
 	}

 	public long getDelayTime() {
 		return delayTime;
 	}

 	public void setDelayTime(long delayTime) {
 		this.delayTime = delayTime;
 	}

 	public int getFrameNum() {
 		return frameNum;
 	}

 	public void setFrameNum(int frameNum) {
 		this.frameNum = frameNum;
 	}

 	public BufferedImage getImage() {
 		return image;
 	}

 	public void setImage(BufferedImage image) {
 		this.image = image;
 	}

 	public long getPlayTime() {
 		return playTime;
 	}

 	public void setPlayTime(long playTime) {
 		this.playTime = playTime;
 	}

 	public byte[] getTextureData() {
 		return this.tBuffer;
 	}

 	public byte[] getImageData() {
 		return this.iBuffer;
 	}

 	public void setImageData(byte[] iBuffer) {
 		this.iBuffer = iBuffer;
 	}

 	public void initializeTextureCompatibleBuffer() {
 		textureWidth = TextureTool.get2Fold(image.getWidth());
 		textureHeight = TextureTool.get2Fold(image.getHeight());

 		// generate an interleaved byte-based ARGB raster and image
 		raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
 				this.textureWidth, this.textureHeight, 4, null);
 		texImage = new BufferedImage(TextureTool.glAlphaColorModel, raster, false,
 				new Hashtable());

 		// get the pointers to the data of the [t]exture buffer
 		// and the data of the [i]image buffer
 		iBuffer = ((DataBufferByte) image.getRaster().getDataBuffer())
 				.getData();
 		tBuffer = ((DataBufferByte) texImage.getRaster()
 				.getDataBuffer()).getData();

 		// get information on how the image is stored in the buffer
 		ComponentSampleModel imageSampleModel = (ComponentSampleModel) image
 				.getSampleModel();
 		scanLineStride = imageSampleModel.getScanlineStride();
 		pixelStride = imageSampleModel.getPixelStride();
 		bankOffsets = imageSampleModel.getBandOffsets();

 		// generate a fixed point floating point number
 		// which will allow us to calculate for a given x or y on the
 		// texture
 		// where the source pixel on the image is
 		xScaleUnit = (int) (((double) image.getWidth() / (double) textureWidth) * 65536);
 		yScaleUnit = (int) (((double) image.getHeight() / (double) textureHeight) * 65536);

 		// generate a bytebuffer to store the resulting image
 		textureCompatibleBuffer = ByteBuffer
 				.allocateDirect(tBuffer.length);
 		textureCompatibleBuffer.order(ByteOrder.nativeOrder());
 	}

 	public void updateTextureCompatibleBuffer() {
 		synchronized (this.syncObj) {
 			// long time = System.currentTimeMillis();
 			int adr = 0; // the address in the texture buffer
 			int xOffset = 0; // the x coordinate in the image
 			int bufferOffset = 0; // the final buffer offset in the image
 			int yOffset = 0; // the y coordinate in the image
 			int yBufferOffset = 0; // a temp value containing the start of the
 									// scanline in the image
 			int x,y; // the coordinates on the texture image


 			if(flip) {
 				yOffset = (image.getHeight()-1)  * 65536;
 				if (bankOffsets.length > 3) { // RGBA or ABGR images
 					int bOff0 = bankOffsets[0];
 					int bOff1 = bankOffsets[1];
 					int bOff2 = bankOffsets[2];
 					int bOff3 = bankOffsets[3];

 					for (y = 1; y < textureHeight; y++) {
 						xOffset = 0;

 						yBufferOffset = (yOffset >> 16) * scanLineStride;

 						for (x = 0; x < textureWidth; x++) {
 							bufferOffset = yBufferOffset + (xOffset >> 16)
 									* pixelStride;

 							tBuffer[adr] 	= iBuffer[bufferOffset + bOff0];
 							tBuffer[adr+1] 	= iBuffer[bufferOffset + bOff1];
 							tBuffer[adr+2]	= iBuffer[bufferOffset + bOff2];
 							tBuffer[adr+3] 	= iBuffer[bufferOffset + bOff3];

 							xOffset += xScaleUnit;
 							adr += 4;
 						}
 						yOffset -= yScaleUnit;
 					}
 				} else { // RGB or BGR images
 					//int y;
 					//int x;
 					int bOff0 = bankOffsets[0];
 					int bOff1 = bankOffsets[1];
 					int bOff2 = bankOffsets[2];
 					for (y = 1; y < textureHeight; y++) {
 						xOffset = 0;

 						yBufferOffset = (yOffset >> 16) * scanLineStride;

 						for (x = 0; x < textureWidth; x++) {
 							bufferOffset = yBufferOffset + (xOffset >> 16)
 									* pixelStride;

 							tBuffer[adr] 	= iBuffer[bufferOffset + bOff0];
 							tBuffer[adr+1] 	= iBuffer[bufferOffset + bOff1];
 							tBuffer[adr+2] 	= iBuffer[bufferOffset + bOff2];
 							tBuffer[adr+3] 	= -1; // -1 signed = 255 unsigned

 							xOffset += xScaleUnit;
 							adr += 4;
 						}
 						yOffset -= yScaleUnit;
 					}
 				}
 			} else {
 				if (bankOffsets.length > 3) { // RGBA or ABGR images
 					int bOff0 = bankOffsets[0];
 					int bOff1 = bankOffsets[1];
 					int bOff2 = bankOffsets[2];
 					int bOff3 = bankOffsets[3];
 					for (y = 0; y < textureHeight; y++) {
 						xOffset = 0;

 						yBufferOffset = (yOffset >> 16) * scanLineStride;

 						for (x = 0; x < textureWidth; x++) {
 							bufferOffset = yBufferOffset + (xOffset >> 16)
 									* pixelStride;

 							tBuffer[adr] 	= iBuffer[bufferOffset + bOff0];
 							tBuffer[adr+1] 	= iBuffer[bufferOffset + bOff1];
 							tBuffer[adr+2]	= iBuffer[bufferOffset + bOff2];
 							tBuffer[adr+3] 	= iBuffer[bufferOffset + bOff3];

 							xOffset += xScaleUnit;
 							adr += 4;
 						}
 						yOffset += yScaleUnit;
 					}
 				} else { // RGB or BGR images
 					//int y;
 					//int x;
 					int bOff0 = bankOffsets[0];
 					int bOff1 = bankOffsets[1];
 					int bOff2 = bankOffsets[2];
 					for (y = 0; y < textureHeight; y++) {
 						xOffset = 0;

 						yBufferOffset = (yOffset >> 16) * scanLineStride;

 						for (x = 0; x < textureWidth; x++) {
 							bufferOffset = yBufferOffset + (xOffset >> 16)
 									* pixelStride;

 							tBuffer[adr] 	= iBuffer[bufferOffset + bOff0];
 							tBuffer[adr+1] 	= iBuffer[bufferOffset + bOff1];
 							tBuffer[adr+2] 	= iBuffer[bufferOffset + bOff2];
 							tBuffer[adr+3] 	= -1; // -1 signed = 255 unsigned

 							xOffset += xScaleUnit;
 							adr += 4;
 						}
 						yOffset += yScaleUnit;
 					}
 				}
 			}
 			textureCompatibleBuffer.rewind();
 			textureCompatibleBuffer.put(tBuffer, 0, tBuffer.length);
 		}
 	}

 	public void bind() {
 		GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureId);
     }

 	public ByteBuffer getTextureCompatibleBuffer() {
 		synchronized (this.syncObj) {
 			return (ByteBuffer) textureCompatibleBuffer.rewind();
 		}
 	}

 	public synchronized void setTextureCompatibleBuffer(
 			ByteBuffer textureCompatibleBuffer) {
 		synchronized (this.syncObj) {
 			this.textureCompatibleBuffer = textureCompatibleBuffer;
 		}
 	}

 	public void update() {
 		updateTextureCompatibleBuffer();
 		GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureId);
 		textureCompatibleBuffer.rewind();
 		GL11.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, textureCompatibleBuffer);
 	}
 }
	/**
	* Copyright (c) 2010-2011, Vincent Vollers and Christopher J. Kucera
	* 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 the Minecraft X-Ray team 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 VINCENT VOLLERS OR CJ KUCERA 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 com.plusminus.craft;

	import java.awt.Graphics;
	import java.awt.Graphics2D;
	import java.awt.color.ColorSpace;
	import java.awt.image.BufferedImage;
	import java.awt.image.ColorModel;
	import java.awt.image.ComponentColorModel;
	import java.awt.image.ComponentSampleModel;
	import java.awt.image.DataBuffer;
	import java.awt.image.DataBufferByte;
	import java.awt.image.Raster;
	import java.awt.image.SampleModel;
	import java.awt.image.WritableRaster;
	import java.nio.ByteBuffer;
	import java.nio.ByteOrder;
	import java.util.Hashtable;

	import org.lwjgl.opengl.GL11;

	/***
	* Represents a texture with methods to quickly (!) update it from a given BufferedImage
	*
	* I took this from a previous project
	*
	* The most interesting about this is the 'update' method, which will redraw an image into a texture compatible buffer and update the texture
	*
	* @todo more documentation
	* @author Vincent
	*/
	public class Texture {
	private BufferedImage image;

	private WritableRaster raster;

	private BufferedImage texImage;

	private byte[] iBuffer;

	private byte[] tBuffer;

	private ByteBuffer textureCompatibleBuffer;

	private int[] bankOffsets;

	private int textureWidth = -1;

	private int textureHeight = -1;

	private int imageWidth;

	private int imageHeight;

	private int xScaleUnit;

	private int yScaleUnit;

	private ComponentSampleModel imageSampleModel;

	private int scanLineStride;

	private int pixelStride;

	private int frameNum;

	private long playTime;

	private long delayTime;

	private boolean flip = false;

	private Object syncObj = new Object();

	private int textureId = -1;

	/*public static final ColorModel glAlphaColorModel = new ComponentColorModel(
	ColorSpace.getInstance(ColorSpace.CS_sRGB),
	new int[] { 8, 8, 8, 8 }, true, false,
	ComponentColorModel.TRANSLUCENT, DataBuffer.TYPE_BYTE);

	public static final ColorModel glColorModel = new ComponentColorModel(
	ColorSpace.getInstance(ColorSpace.CS_sRGB),
	new int[] { 8, 8, 8, 0 }, false, false, ComponentColorModel.OPAQUE,
	DataBuffer.TYPE_BYTE);*/

	public Texture(BufferedImage image, int frameNum, long playTime,
	long delayTime) {
	// System.out.println(image.hashCode());
	this.image = image;
	this.frameNum = frameNum;
	this.playTime = playTime;
	this.delayTime = delayTime;
	this.textureCompatibleBuffer = null;
	}

	public Texture(BufferedImage image) {
	// System.out.println(image.hashCode());
	this.image = image;
	this.frameNum = -1;
	this.playTime = -1;
	this.delayTime = -1;
	this.textureCompatibleBuffer = null;
	}

	public int getTextureId() {
	return this.textureId;
	}

	public void setTextureId(int id) {
	this.textureId = id;
	}

	public void setFlip(boolean flip) {
	this.flip = flip;
	}

	public boolean getFlip() {
	return flip;
	}

	public int getTextureWidth() {
	return this.textureWidth;
	}

	public int getTextureHeight() {
	return this.textureHeight;
	}

	public long getDelayTime() {
	return delayTime;
	}

	public void setDelayTime(long delayTime) {
	this.delayTime = delayTime;
	}

	public int getFrameNum() {
	return frameNum;
	}

	public void setFrameNum(int frameNum) {
	this.frameNum = frameNum;
	}

	public BufferedImage getImage() {
	return image;
	}

	public void setImage(BufferedImage image) {
	this.image = image;
	}

	public long getPlayTime() {
	return playTime;
	}

	public void setPlayTime(long playTime) {
	this.playTime = playTime;
	}

	public byte[] getTextureData() {
	return this.tBuffer;
	}

	public byte[] getImageData() {
	return this.iBuffer;
	}

	public void setImageData(byte[] iBuffer) {
	this.iBuffer = iBuffer;
	}

	public void initializeTextureCompatibleBuffer() {
	textureWidth = TextureTool.get2Fold(image.getWidth());
	textureHeight = TextureTool.get2Fold(image.getHeight());

	// generate an interleaved byte-based ARGB raster and image
	raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,
	this.textureWidth, this.textureHeight, 4, null);
	texImage = new BufferedImage(TextureTool.glAlphaColorModel, raster, false,
	new Hashtable());

	// get the pointers to the data of the [t]exture buffer
	// and the data of the [i]image buffer
	iBuffer = ((DataBufferByte) image.getRaster().getDataBuffer())
	.getData();
	tBuffer = ((DataBufferByte) texImage.getRaster()
	.getDataBuffer()).getData();

	// get information on how the image is stored in the buffer
	ComponentSampleModel imageSampleModel = (ComponentSampleModel) image
	.getSampleModel();
	scanLineStride = imageSampleModel.getScanlineStride();
	pixelStride = imageSampleModel.getPixelStride();
	bankOffsets = imageSampleModel.getBandOffsets();

	// generate a fixed point floating point number
	// which will allow us to calculate for a given x or y on the
	// texture
	// where the source pixel on the image is
	xScaleUnit = (int) (((double) image.getWidth() / (double) textureWidth) * 65536);
	yScaleUnit = (int) (((double) image.getHeight() / (double) textureHeight) * 65536);

	// generate a bytebuffer to store the resulting image
	textureCompatibleBuffer = ByteBuffer
	.allocateDirect(tBuffer.length);
	textureCompatibleBuffer.order(ByteOrder.nativeOrder());
	}

	public void updateTextureCompatibleBuffer() {
	synchronized (this.syncObj) {
	// long time = System.currentTimeMillis();
	int adr = 0; // the address in the texture buffer
	int xOffset = 0; // the x coordinate in the image
	int bufferOffset = 0; // the final buffer offset in the image
	int yOffset = 0; // the y coordinate in the image
	int yBufferOffset = 0; // a temp value containing the start of the
	// scanline in the image
	int x,y; // the coordinates on the texture image


	if(flip) {
	yOffset = (image.getHeight()-1) * 65536;
	if (bankOffsets.length > 3) { // RGBA or ABGR images
	int bOff0 = bankOffsets[0];
	int bOff1 = bankOffsets[1];
	int bOff2 = bankOffsets[2];
	int bOff3 = bankOffsets[3];

	for (y = 1; y < textureHeight; y++) {
	xOffset = 0;

	yBufferOffset = (yOffset >> 16) * scanLineStride;

	for (x = 0; x < textureWidth; x++) {
	bufferOffset = yBufferOffset + (xOffset >> 16)
	* pixelStride;

	tBuffer[adr] = iBuffer[bufferOffset + bOff0];
	tBuffer[adr+1] = iBuffer[bufferOffset + bOff1];
	tBuffer[adr+2] = iBuffer[bufferOffset + bOff2];
	tBuffer[adr+3] = iBuffer[bufferOffset + bOff3];

	xOffset += xScaleUnit;
	adr += 4;
	}
	yOffset -= yScaleUnit;
	}
	} else { // RGB or BGR images
	//int y;
	//int x;
	int bOff0 = bankOffsets[0];
	int bOff1 = bankOffsets[1];
	int bOff2 = bankOffsets[2];
	for (y = 1; y < textureHeight; y++) {
	xOffset = 0;

	yBufferOffset = (yOffset >> 16) * scanLineStride;

	for (x = 0; x < textureWidth; x++) {
	bufferOffset = yBufferOffset + (xOffset >> 16)
	* pixelStride;

	tBuffer[adr] = iBuffer[bufferOffset + bOff0];
	tBuffer[adr+1] = iBuffer[bufferOffset + bOff1];
	tBuffer[adr+2] = iBuffer[bufferOffset + bOff2];
	tBuffer[adr+3] = -1; // -1 signed = 255 unsigned

	xOffset += xScaleUnit;
	adr += 4;
	}
	yOffset -= yScaleUnit;
	}
	}
	} else {
	if (bankOffsets.length > 3) { // RGBA or ABGR images
	int bOff0 = bankOffsets[0];
	int bOff1 = bankOffsets[1];
	int bOff2 = bankOffsets[2];
	int bOff3 = bankOffsets[3];
	for (y = 0; y < textureHeight; y++) {
	xOffset = 0;

	yBufferOffset = (yOffset >> 16) * scanLineStride;

	for (x = 0; x < textureWidth; x++) {
	bufferOffset = yBufferOffset + (xOffset >> 16)
	* pixelStride;

	tBuffer[adr] = iBuffer[bufferOffset + bOff0];
	tBuffer[adr+1] = iBuffer[bufferOffset + bOff1];
	tBuffer[adr+2] = iBuffer[bufferOffset + bOff2];
	tBuffer[adr+3] = iBuffer[bufferOffset + bOff3];

	xOffset += xScaleUnit;
	adr += 4;
	}
	yOffset += yScaleUnit;
	}
	} else { // RGB or BGR images
	//int y;
	//int x;
	int bOff0 = bankOffsets[0];
	int bOff1 = bankOffsets[1];
	int bOff2 = bankOffsets[2];
	for (y = 0; y < textureHeight; y++) {
	xOffset = 0;

	yBufferOffset = (yOffset >> 16) * scanLineStride;

	for (x = 0; x < textureWidth; x++) {
	bufferOffset = yBufferOffset + (xOffset >> 16)
	* pixelStride;

	tBuffer[adr] = iBuffer[bufferOffset + bOff0];
	tBuffer[adr+1] = iBuffer[bufferOffset + bOff1];
	tBuffer[adr+2] = iBuffer[bufferOffset + bOff2];
	tBuffer[adr+3] = -1; // -1 signed = 255 unsigned

	xOffset += xScaleUnit;
	adr += 4;
	}
	yOffset += yScaleUnit;
	}
	}
	}
	textureCompatibleBuffer.rewind();
	textureCompatibleBuffer.put(tBuffer, 0, tBuffer.length);
	}
	}

	public void bind() {
	GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureId);
	}

	public ByteBuffer getTextureCompatibleBuffer() {
	synchronized (this.syncObj) {
	return (ByteBuffer) textureCompatibleBuffer.rewind();
	}
	}

	public synchronized void setTextureCompatibleBuffer(
	ByteBuffer textureCompatibleBuffer) {
	synchronized (this.syncObj) {
	this.textureCompatibleBuffer = textureCompatibleBuffer;
	}
	}

	public void update() {
	updateTextureCompatibleBuffer();
	GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureId);
	textureCompatibleBuffer.rewind();
	GL11.glTexSubImage2D(GL11.GL_TEXTURE_2D, 0, 0, 0, textureWidth, textureHeight, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, textureCompatibleBuffer);
	}
	}