Class SimpleArrayBuffer

src/main/java/field/graphics/SimpleArrayBuffer.java:20–227

An OpenGL Vertex Buffer backed by a ByteBuffer. Useful for VertexArrays and ElementArrays

 * An OpenGL Vertex Buffer backed by a ByteBuffer. Useful for VertexArrays and ElementArrays
 */
public class SimpleArrayBuffer implements ArrayBuffer {

	static public int uploadBytes = 0;
	final int divisor;
	private FloatBuffer dataAsFloat;
	private IntBuffer dataAsInt;
	private final int size;
	private final int binding;
	private final int attribute;
	private final int dimension;
	ByteBuffer data;
	int mod = 0;
	private FloatBuffer customStorage = null;
	public SimpleArrayBuffer(int size, int binding, int attribute, int dimension, int divisor) {
		this.size = size;
		this.binding = binding;
		this.attribute = attribute;
		this.dimension = dimension;
		this.divisor = divisor;

		data = ByteBuffer.allocateDirect(4 * size * dimension)
				 .order(ByteOrder.nativeOrder());
		dataAsFloat = data.asFloatBuffer();
		dataAsInt = data.asIntBuffer();
	}

	static public ArrayBuffer newArrayBuffer(int maxVertex, int binding, int attribute, int dimension, int divisor) {
		return new SimpleArrayBuffer(maxVertex, binding, attribute, dimension, divisor);
	}

	public FloatBuffer getCustomStorage() {
		return customStorage;
	}

	public void setCustomStorage(FloatBuffer customStorage) throws NoSuchFieldException, IllegalAccessException {
		this.customStorage = customStorage;
		data = BufferUtils.asByteBuffer(customStorage);
		dataAsFloat = customStorage;
		dataAsInt = data.asIntBuffer();
		mod++;
	}

	@Override
	public boolean clean(int limit) {
		State state = GraphicsContext.get(this);
		final State finalState = state;
		Log.log("graphics.trace", ()-> "       clean " + finalState);
		if (state == null) GraphicsContext.put(this, state = setup());
		if (state.mod != mod || state.limit < limit) {
			upload(state, limit);
			state.mod = mod;
			return true;
		}
		return false;
	}

	@Override
	public int getSize() {