diff --git a/src/java/org/lwjgl/opengl/CoreGL12.java b/src/java/org/lwjgl/opengl/CoreGL12.java
index 9d6a92ec..1a4a7494 100644
--- a/src/java/org/lwjgl/opengl/CoreGL12.java
+++ b/src/java/org/lwjgl/opengl/CoreGL12.java
@@ -32,6 +32,7 @@
 
 package org.lwjgl.opengl;
 
+import java.nio.*;
 import java.nio.IntBuffer;
 import java.nio.FloatBuffer;
 import java.nio.Buffer;
@@ -45,43 +46,197 @@ import java.nio.Buffer;
  * @version $Revision: 1.23 $
  */
 public class CoreGL12 extends CoreGL11 implements CoreGL12Constants {
-	public static native void glColorTable(int target, int internalFormat, int width, int format, int type, Buffer data);
-	public static native void glColorSubTable(int target, int start, int count, int format, int type, Buffer data);
-	public static native void glColorTableParameteriv(int target, int pname, IntBuffer params);
-	public static native void glColorTableParameterfv(int target, int pname, FloatBuffer params);
+	
+	/**
+	 * A helper function which is used to get the byte offset in an arbitrary buffer
+	 * based on its position
+	 * @return the position of the buffer, in BYTES
+	 */
+	static int getOffset(Buffer buffer) {
+		if (buffer instanceof FloatBuffer || buffer instanceof IntBuffer)
+			return buffer.position() << 2;
+		else if (buffer instanceof ShortBuffer || buffer instanceof CharBuffer)
+			return buffer.position() << 1;
+		else if (buffer instanceof DoubleBuffer || buffer instanceof LongBuffer)
+			return buffer.position() << 3;
+		else
+			return buffer.position();
+	}
+	
+	
+	public static void glColorTable(int target, int internalFormat, int width, int format, int type, ByteBuffer data) {
+		nglColorTable(target, internalFormat, width, format, type, data, data.position());
+	}
+	public static void glColorTable(int target, int internalFormat, int width, int format, int type, FloatBuffer data) {
+		nglColorTable(target, internalFormat, width, format, type, data, data.position() << 2);
+	}
+	private static native void nglColorTable(int target, int internalFormat, int width, int format, int type, Buffer data, int data_offset);
+	public static void glColorSubTable(int target, int start, int count, int format, int type, ByteBuffer data) {
+		nglColorSubTable(target, start, count, format, type, data, data.position());
+	}
+	public static void glColorSubTable(int target, int start, int count, int format, int type, FloatBuffer data) {
+		nglColorSubTable(target, start, count, format, type, data, data.position() << 2);
+	}
+	private static native void nglColorSubTable(int target, int start, int count, int format, int type, Buffer data, int data_offset);
+	public static void glColorTableParameter(int target, int pname, IntBuffer params) {
+		nglColorTableParameteriv(target, pname, params, params.position());
+	}
+	private static native void nglColorTableParameteriv(int target, int pname, IntBuffer params, int data_offset);
+	public static void glColorTableParameter(int target, int pname, FloatBuffer params) {
+		nglColorTableParameterfv(target, pname, params, params.position());		
+	}
+	private static native void nglColorTableParameterfv(int target, int pname, FloatBuffer params, int data_offset);
 	public static native void glCopyColorSubTable(int target, int start, int x, int y, int width);
 	public static native void glCopyColorTable(int target, int internalformat, int x, int y, int width);
-	public static native void glGetColorTable(int target, int format, int type, Buffer data);
-	public static native void glGetColorTableParameteriv(int target, int pname, IntBuffer params);
-	public static native void glGetColorTableParameterfv(int target, int pname, FloatBuffer params);
+	public static void glGetColorTable(int target, int format, int type, ByteBuffer data) {
+		nglGetColorTable(target, format, type, data, data.position());
+	}
+	public static void glGetColorTable(int target, int format, int type, FloatBuffer data) {
+		nglGetColorTable(target, format, type, data, data.position());
+	}
+	private static native void nglGetColorTable(int target, int format, int type, Buffer data, int data_offset);
+	public static void glGetColorTableParameter(int target, int pname, IntBuffer params) {
+		nglGetColorTableParameteriv(target, pname, params, params.position());
+	}
+	private static native void nglGetColorTableParameteriv(int target, int pname, IntBuffer params, int params_offset);
+	public static void glGetColorTableParameter(int target, int pname, FloatBuffer params) {
+		nglGetColorTableParameterfv(target, pname, params, params.position());
+	}
+	private static native void nglGetColorTableParameterfv(int target, int pname, FloatBuffer params, int params_offset);
 	public static native void glBlendEquation(int mode);
 	public static native void glBlendColor(float red, float green, float blue, float alpha);
 	public static native void glHistogram(int target, int width, int internalformat, boolean sink);
 	public static native void glResetHistogram(int target);
-	public static native void glGetHistogram(int target, boolean reset, int format, int type, Buffer values);
-	public static native void glGetHistogramParameterfv(int target, int pname, FloatBuffer params);
-	public static native void glGetHistogramParameteriv(int target, int pname, IntBuffer params);
+	public static void glGetHistogram(int target, boolean reset, int format, int type, ByteBuffer values) {
+		nglGetHistogram(target, reset, format, type, values, values.position());
+	}
+	public static void glGetHistogram(int target, boolean reset, int format, int type, ShortBuffer values) {
+		nglGetHistogram(target, reset, format, type, values, values.position() << 1);
+	}
+	public static void glGetHistogram(int target, boolean reset, int format, int type, IntBuffer values) {
+		nglGetHistogram(target, reset, format, type, values, values.position() << 2);
+	}
+	public static void glGetHistogram(int target, boolean reset, int format, int type, FloatBuffer values) {
+		nglGetHistogram(target, reset, format, type, values, values.position() << 2);
+	}
+	private static native void nglGetHistogram(int target, boolean reset, int format, int type, Buffer values, int values_offset);
+	public static void glGetHistogramParameter(int target, int pname, FloatBuffer params) {
+		nglGetHistogramParameterfv(target, pname, params, params.position());
+	}
+	private static native void nglGetHistogramParameterfv(int target, int pname, FloatBuffer params, int params_offset);
+	public static void glGetHistogramParameter(int target, int pname, IntBuffer params) {
+		nglGetHistogramParameteriv(target, pname, params, params.position());
+	}
+	private static native void nglGetHistogramParameteriv(int target, int pname, IntBuffer params, int params_offset);
 	public static native void glMinmax(int target, int internalformat, boolean sink);
 	public static native void glResetMinmax(int target);
-	public static native void glGetMinmax(int target, boolean reset, int format, int types, Buffer values);
-	public static native void glGetMinmaxParameterfv(int target, int pname, FloatBuffer params);
-	public static native void glGetMinmaxParameteriv(int target, int pname, IntBuffer params);
-	public static native void glConvolutionFilter1D(int target, int internalformat, int width, int format, int type, Buffer image);
-	public static native void glConvolutionFilter2D(int target, int internalformat, int width, int height, int format, int type, Buffer image);
+	public static void glGetMinmax(int target, boolean reset, int format, int types, ByteBuffer values) {
+		nglGetMinmax(target, reset, format, types, values, values.position());
+	}
+	public static void glGetMinmax(int target, boolean reset, int format, int types, ShortBuffer values) {
+		nglGetMinmax(target, reset, format, types, values, values.position() << 1);
+	}
+	public static void glGetMinmax(int target, boolean reset, int format, int types, IntBuffer values) {
+		nglGetMinmax(target, reset, format, types, values, values.position() << 2);
+	}
+	public static void glGetMinmax(int target, boolean reset, int format, int types, FloatBuffer values) {
+		nglGetMinmax(target, reset, format, types, values, values.position() << 2);
+	}
+	private static native void nglGetMinmax(int target, boolean reset, int format, int types, Buffer values, int values_offset);
+	public static void glGetMinmaxParameter(int target, int pname, FloatBuffer params) {
+		nglGetMinmaxParameterfv(target, pname, params, params.position());
+	}
+	private static native void nglGetMinmaxParameterfv(int target, int pname, FloatBuffer params, int params_offset);
+	public static void glGetMinmaxParameter(int target, int pname, IntBuffer params) {
+		nglGetMinmaxParameteriv(target, pname, params, params.position());
+	}
+	private static native void nglGetMinmaxParameteriv(int target, int pname, IntBuffer params, int params_offset);
+	public static void glConvolutionFilter1D(int target, int internalformat, int width, int format, int type, ByteBuffer image) {
+		nglConvolutionFilter1D(target, internalformat, width, format, type, image, image.position());
+	}
+	public static void glConvolutionFilter1D(int target, int internalformat, int width, int format, int type, ShortBuffer image) {
+		nglConvolutionFilter1D(target, internalformat, width, format, type, image, image.position());
+	}
+	public static void glConvolutionFilter1D(int target, int internalformat, int width, int format, int type, IntBuffer image) {
+		nglConvolutionFilter1D(target, internalformat, width, format, type, image, image.position());
+	}
+	public static void glConvolutionFilter1D(int target, int internalformat, int width, int format, int type, FloatBuffer image) {
+		nglConvolutionFilter1D(target, internalformat, width, format, type, image, image.position());
+	}
+	private static native void nglConvolutionFilter1D(int target, int internalformat, int width, int format, int type, Buffer image, int image_offset);
+	public static void glConvolutionFilter2D(int target, int internalformat, int width, int height, int format, int type, Buffer image) {
+	}
+	private static native void nglConvolutionFilter2D(int target, int internalformat, int width, int height, int format, int type, Buffer image, int image_offset);
 	public static native void glConvolutionParameterf(int target, int pname, float params);
-	public static native void glConvolutionParameterfv(int target, int pname, FloatBuffer params);
+	public static void glConvolutionParameter(int target, int pname, FloatBuffer params) {
+	}
+	private static native void nglConvolutionParameterfv(int target, int pname, FloatBuffer params, int params_offset);
 	public static native void glConvolutionParameteri(int target, int pname, int params);
-	public static native void glConvolutionParameteriv(int target, int pname, IntBuffer params);
+	public static void glConvolutionParameteriv(int target, int pname, IntBuffer params) {
+		nglConvolutionParameteriv(target, pname, params, params.position());
+	}
+	private static native void nglConvolutionParameteriv(int target, int pname, IntBuffer params, int params_offset);
 	public static native void glCopyConvolutionFilter1D(int target, int internalformat, int x, int y, int width);
 	public static native void glCopyConvolutionFilter2D(int target, int internalformat, int x, int y, int width, int height);
-	public static native void glGetConvolutionFilter(int target, int format, int type, Buffer image);
-	public static native void glGetConvolutionParameterfv(int target, int pname, FloatBuffer params);
-	public static native void glGetConvolutionParameteriv(int target, int pname, IntBuffer params);
-	public static native void glSeparableFilter2D(int target, int internalformat, int width, int height, int format, int type, Buffer row, Buffer column);
-	public static native void glGetSeparableFilter(int target, int format, int type, Buffer row, Buffer column, Buffer span);
-	public static native void glDrawRangeElements(int mode, int start, int end, int count, int type, Buffer indices);
-	public static native void glTexImage3D(int target, int level, int internalFormat, int width, int height, int depth, int border, int format, int type, Buffer pixels);
-	public static native void glTexSubImage3D(int target, int level, int xoffset, int yoffset, int zoffset, int width, int height, int depth, int format, int type, Buffer pixels);
+	public static void glGetConvolutionFilter(int target, int format, int type, ByteBuffer image) {
+		nglGetConvolutionFilter(target, format, type, image, image.position());
+	}
+	public static void glGetConvolutionFilter(int target, int format, int type, ShortBuffer image) {
+		nglGetConvolutionFilter(target, format, type, image, image.position() << 1);
+	}
+	public static void glGetConvolutionFilter(int target, int format, int type, IntBuffer image) {
+		nglGetConvolutionFilter(target, format, type, image, image.position() << 2);
+	}
+	public static void glGetConvolutionFilter(int target, int format, int type, FloatBuffer image) {
+		nglGetConvolutionFilter(target, format, type, image, image.position() << 2);
+	}
+	private static native void nglGetConvolutionFilter(int target, int format, int type, Buffer image, int image_offset);
+	public static void glGetConvolutionParameter(int target, int pname, FloatBuffer params) {
+		nglGetConvolutionParameterfv(target, pname, params, params.position());
+	}
+	private static native void nglGetConvolutionParameterfv(int target, int pname, FloatBuffer params, int params_offset);
+	public static void glGetConvolutionParameter(int target, int pname, IntBuffer params) {
+		nglGetConvolutionParameteriv(target, pname, params, params.position());
+	}
+	private static native void nglGetConvolutionParameteriv(int target, int pname, IntBuffer params, int params_offset);
+	public static void glSeparableFilter2D(int target, int internalformat, int width, int height, int format, int type, Buffer row, Buffer column) {
+		nglSeparableFilter2D(target, internalformat, width, height, format, type, row, getOffset(row), column, getOffset(column));
+	}
+	private static native void nglSeparableFilter2D(int target, int internalformat, int width, int height, int format, int type, Buffer row, int row_offset, Buffer column, int column_offset);
+	public static void glGetSeparableFilter(int target, int format, int type, Buffer row, Buffer column, Buffer span) {
+		nglGetSeparableFilter(target, format, type, row, getOffset(row), column, getOffset(column), span, getOffset(span));
+	}
+	private static native void nglGetSeparableFilter(int target, int format, int type, Buffer row, int row_offset, Buffer column, int column_offset, Buffer span, int span_offset);
+	public static void glDrawRangeElements(int mode, int start, int end, int count, int type, ByteBuffer indices) {
+		nglDrawRangeElements(mode, start, end, count, type, indices, indices.position());
+	}
+	public static void glDrawRangeElements(int mode, int start, int end, int count, int type, ShortBuffer indices) {
+		nglDrawRangeElements(mode, start, end, count, type, indices, indices.position() << 1);
+	}
+	public static void glDrawRangeElements(int mode, int start, int end, int count, int type, IntBuffer indices) {
+		nglDrawRangeElements(mode, start, end, count, type, indices, indices.position() << 2);
+	}
+	private static native void nglDrawRangeElements(int mode, int start, int end, int count, int type, Buffer indices, int indices_offset);
+	public static void glTexImage3D(int target, int level, int internalFormat, int width, int height, int depth, int border, int format, int type, ByteBuffer pixels) {
+		nglTexImage3D(target, level, internalFormat, width, height, depth, border, format, type, pixels, pixels.position());
+	}
+	public static void glTexImage3D(int target, int level, int internalFormat, int width, int height, int depth, int border, int format, int type, ShortBuffer pixels) {
+		nglTexImage3D(target, level, internalFormat, width, height, depth, border, format, type, pixels, pixels.position() << 1);
+	}
+	public static void glTexImage3D(int target, int level, int internalFormat, int width, int height, int depth, int border, int format, int type, IntBuffer pixels) {
+		nglTexImage3D(target, level, internalFormat, width, height, depth, border, format, type, pixels, pixels.position() << 2);
+	}
+	private static native void nglTexImage3D(int target, int level, int internalFormat, int width, int height, int depth, int border, int format, int type, Buffer pixels, int pixels_offset);
+	public static void glTexSubImage3D(int target, int level, int xoffset, int yoffset, int zoffset, int width, int height, int depth, int format, int type, ByteBuffer pixels) {
+		nglTexSubImage3D(target, level, xoffset, yoffset, zoffset, width, height, depth, format, type, pixels, pixels.position());
+	}
+	public static void glTexSubImage3D(int target, int level, int xoffset, int yoffset, int zoffset, int width, int height, int depth, int format, int type, ShortBuffer pixels) {
+		nglTexSubImage3D(target, level, xoffset, yoffset, zoffset, width, height, depth, format, type, pixels, pixels.position() << 1);
+	}
+	public static void glTexSubImage3D(int target, int level, int xoffset, int yoffset, int zoffset, int width, int height, int depth, int format, int type, IntBuffer pixels) {
+		nglTexSubImage3D(target, level, xoffset, yoffset, zoffset, width, height, depth, format, type, pixels, pixels.position() << 2);
+	}
+	private static native void nglTexSubImage3D(int target, int level, int xoffset, int yoffset, int zoffset, int width, int height, int depth, int format, int type, Buffer pixels, int pixels_offset);
 	public static native void glCopyTexSubImage3D(int target, int level, int xoffset, int yoffset, int zoffset, int x, int y, int width, int height);
 }