/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 */
package org.lwjgl.demo.bgfx;

import org.joml.Math;
import org.joml.*;
import org.lwjgl.bgfx.*;
import org.lwjgl.system.MemoryStack;
import org.lwjgl.system.MemoryUtil;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.FloatBuffer;

import static org.joml.Math.cos;
import static org.joml.Math.sin;
import static org.lwjgl.bgfx.BGFX.*;
import static org.lwjgl.glfw.GLFW.glfwGetTimerFrequency;
import static org.lwjgl.glfw.GLFW.glfwGetTimerValue;

/**
 * bgfx demo: 02-Metaballs
 * <p>
 * <p>This demo is a Java port of
 * <a href="https://github.com/bkaradzic/bgfx/tree/master/examples/02-metaballs">https://github.com/bkaradzic/bgfx/tree/master/examples/02-metaballs</a>.</p>
 */
public class Metaballs extends Demo {

    private static class Grid {

        float val;
        Vector3f normal = new Vector3f();
    }

    private BGFXVertexLayout layout;
    private short program;

    private Matrix4x3f view = new Matrix4x3f();
    private FloatBuffer viewBuf;
    private Matrix4f proj = new Matrix4f();
    private FloatBuffer projBuf;
    private Matrix4x3f model = new Matrix4x3f();
    private FloatBuffer modelBuf;

    private Grid[] grid = new Grid[DIMS * DIMS * DIMS];

    private static final int DIMS = 32;

    // Triangulation tables taken from:
    // http://paulbourke.net/geometry/polygonise/
    private static final int[] s_edges = {
            0x000, 0x109, 0x203, 0x30a, 0x406, 0x50f, 0x605, 0x70c,
            0x80c, 0x905, 0xa0f, 0xb06, 0xc0a, 0xd03, 0xe09, 0xf00,
            0x190, 0x099, 0x393, 0x29a, 0x596, 0x49f, 0x795, 0x69c,
            0x99c, 0x895, 0xb9f, 0xa96, 0xd9a, 0xc93, 0xf99, 0xe90,
            0x230, 0x339, 0x033, 0x13a, 0x636, 0x73f, 0x435, 0x53c,
            0xa3c, 0xb35, 0x83f, 0x936, 0xe3a, 0xf33, 0xc39, 0xd30,
            0x3a0, 0x2a9, 0x1a3, 0x0aa, 0x7a6, 0x6af, 0x5a5, 0x4ac,
            0xbac, 0xaa5, 0x9af, 0x8a6, 0xfaa, 0xea3, 0xda9, 0xca0,
            0x460, 0x569, 0x663, 0x76a, 0x66, 0x16f, 0x265, 0x36c,
            0xc6c, 0xd65, 0xe6f, 0xf66, 0x86a, 0x963, 0xa69, 0xb60,
            0x5f0, 0x4f9, 0x7f3, 0x6fa, 0x1f6, 0x0ff, 0x3f5, 0x2fc,
            0xdfc, 0xcf5, 0xfff, 0xef6, 0x9fa, 0x8f3, 0xbf9, 0xaf0,
            0x650, 0x759, 0x453, 0x55a, 0x256, 0x35f, 0x055, 0x15c,
            0xe5c, 0xf55, 0xc5f, 0xd56, 0xa5a, 0xb53, 0x859, 0x950,
            0x7c0, 0x6c9, 0x5c3, 0x4ca, 0x3c6, 0x2cf, 0x1c5, 0x0cc,
            0xfcc, 0xec5, 0xdcf, 0xcc6, 0xbca, 0xac3, 0x9c9, 0x8c0,
            0x8c0, 0x9c9, 0xac3, 0xbca, 0xcc6, 0xdcf, 0xec5, 0xfcc,
            0x0cc, 0x1c5, 0x2cf, 0x3c6, 0x4ca, 0x5c3, 0x6c9, 0x7c0,
            0x950, 0x859, 0xb53, 0xa5a, 0xd56, 0xc5f, 0xf55, 0xe5c,
            0x15c, 0x55, 0x35f, 0x256, 0x55a, 0x453, 0x759, 0x650,
            0xaf0, 0xbf9, 0x8f3, 0x9fa, 0xef6, 0xfff, 0xcf5, 0xdfc,
            0x2fc, 0x3f5, 0x0ff, 0x1f6, 0x6fa, 0x7f3, 0x4f9, 0x5f0,
            0xb60, 0xa69, 0x963, 0x86a, 0xf66, 0xe6f, 0xd65, 0xc6c,
            0x36c, 0x265, 0x16f, 0x066, 0x76a, 0x663, 0x569, 0x460,
            0xca0, 0xda9, 0xea3, 0xfaa, 0x8a6, 0x9af, 0xaa5, 0xbac,
            0x4ac, 0x5a5, 0x6af, 0x7a6, 0x0aa, 0x1a3, 0x2a9, 0x3a0,
            0xd30, 0xc39, 0xf33, 0xe3a, 0x936, 0x83f, 0xb35, 0xa3c,
            0x53c, 0x435, 0x73f, 0x636, 0x13a, 0x033, 0x339, 0x230,
            0xe90, 0xf99, 0xc93, 0xd9a, 0xa96, 0xb9f, 0x895, 0x99c,
            0x69c, 0x795, 0x49f, 0x596, 0x29a, 0x393, 0x099, 0x190,
            0xf00, 0xe09, 0xd03, 0xc0a, 0xb06, 0xa0f, 0x905, 0x80c,
            0x70c, 0x605, 0x50f, 0x406, 0x30a, 0x203, 0x109, 0x000,
    };

    private static final int[][] s_indices = {
            { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 1, 9, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 8, 3, 9, 8, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 3, 1, 2, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 2, 10, 0, 2, 9, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 8, 3, 2, 10, 8, 10, 9, 8, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 11, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 11, 2, 8, 11, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 9, 0, 2, 3, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 11, 2, 1, 9, 11, 9, 8, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 10, 1, 11, 10, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 10, 1, 0, 8, 10, 8, 11, 10, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 9, 0, 3, 11, 9, 11, 10, 9, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 8, 10, 10, 8, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 7, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 3, 0, 7, 3, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 1, 9, 8, 4, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 1, 9, 4, 7, 1, 7, 3, 1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 10, 8, 4, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 4, 7, 3, 0, 4, 1, 2, 10, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 2, 10, 9, 0, 2, 8, 4, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 10, 9, 2, 9, 7, 2, 7, 3, 7, 9, 4, -1, -1, -1, -1 },
            { 8, 4, 7, 3, 11, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 11, 4, 7, 11, 2, 4, 2, 0, 4, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 0, 1, 8, 4, 7, 2, 3, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 7, 11, 9, 4, 11, 9, 11, 2, 9, 2, 1, -1, -1, -1, -1 },
            { 3, 10, 1, 3, 11, 10, 7, 8, 4, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 11, 10, 1, 4, 11, 1, 0, 4, 7, 11, 4, -1, -1, -1, -1 },
            { 4, 7, 8, 9, 0, 11, 9, 11, 10, 11, 0, 3, -1, -1, -1, -1 },
            { 4, 7, 11, 4, 11, 9, 9, 11, 10, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 5, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 5, 4, 0, 8, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 5, 4, 1, 5, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 5, 4, 8, 3, 5, 3, 1, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 10, 9, 5, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 0, 8, 1, 2, 10, 4, 9, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 2, 10, 5, 4, 2, 4, 0, 2, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 10, 5, 3, 2, 5, 3, 5, 4, 3, 4, 8, -1, -1, -1, -1 },
            { 9, 5, 4, 2, 3, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 11, 2, 0, 8, 11, 4, 9, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 5, 4, 0, 1, 5, 2, 3, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 1, 5, 2, 5, 8, 2, 8, 11, 4, 8, 5, -1, -1, -1, -1 },
            { 10, 3, 11, 10, 1, 3, 9, 5, 4, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 9, 5, 0, 8, 1, 8, 10, 1, 8, 11, 10, -1, -1, -1, -1 },
            { 5, 4, 0, 5, 0, 11, 5, 11, 10, 11, 0, 3, -1, -1, -1, -1 },
            { 5, 4, 8, 5, 8, 10, 10, 8, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 7, 8, 5, 7, 9, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 3, 0, 9, 5, 3, 5, 7, 3, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 7, 8, 0, 1, 7, 1, 5, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 5, 3, 3, 5, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 7, 8, 9, 5, 7, 10, 1, 2, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 1, 2, 9, 5, 0, 5, 3, 0, 5, 7, 3, -1, -1, -1, -1 },
            { 8, 0, 2, 8, 2, 5, 8, 5, 7, 10, 5, 2, -1, -1, -1, -1 },
            { 2, 10, 5, 2, 5, 3, 3, 5, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 7, 9, 5, 7, 8, 9, 3, 11, 2, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 5, 7, 9, 7, 2, 9, 2, 0, 2, 7, 11, -1, -1, -1, -1 },
            { 2, 3, 11, 0, 1, 8, 1, 7, 8, 1, 5, 7, -1, -1, -1, -1 },
            { 11, 2, 1, 11, 1, 7, 7, 1, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 5, 8, 8, 5, 7, 10, 1, 3, 10, 3, 11, -1, -1, -1, -1 },
            { 5, 7, 0, 5, 0, 9, 7, 11, 0, 1, 0, 10, 11, 10, 0, -1 },
            { 11, 10, 0, 11, 0, 3, 10, 5, 0, 8, 0, 7, 5, 7, 0, -1 },
            { 11, 10, 5, 7, 11, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 6, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 3, 5, 10, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 0, 1, 5, 10, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 8, 3, 1, 9, 8, 5, 10, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 6, 5, 2, 6, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 6, 5, 1, 2, 6, 3, 0, 8, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 6, 5, 9, 0, 6, 0, 2, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 9, 8, 5, 8, 2, 5, 2, 6, 3, 2, 8, -1, -1, -1, -1 },
            { 2, 3, 11, 10, 6, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 11, 0, 8, 11, 2, 0, 10, 6, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 1, 9, 2, 3, 11, 5, 10, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 10, 6, 1, 9, 2, 9, 11, 2, 9, 8, 11, -1, -1, -1, -1 },
            { 6, 3, 11, 6, 5, 3, 5, 1, 3, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 11, 0, 11, 5, 0, 5, 1, 5, 11, 6, -1, -1, -1, -1 },
            { 3, 11, 6, 0, 3, 6, 0, 6, 5, 0, 5, 9, -1, -1, -1, -1 },
            { 6, 5, 9, 6, 9, 11, 11, 9, 8, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 10, 6, 4, 7, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 3, 0, 4, 7, 3, 6, 5, 10, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 9, 0, 5, 10, 6, 8, 4, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 6, 5, 1, 9, 7, 1, 7, 3, 7, 9, 4, -1, -1, -1, -1 },
            { 6, 1, 2, 6, 5, 1, 4, 7, 8, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 5, 5, 2, 6, 3, 0, 4, 3, 4, 7, -1, -1, -1, -1 },
            { 8, 4, 7, 9, 0, 5, 0, 6, 5, 0, 2, 6, -1, -1, -1, -1 },
            { 7, 3, 9, 7, 9, 4, 3, 2, 9, 5, 9, 6, 2, 6, 9, -1 },
            { 3, 11, 2, 7, 8, 4, 10, 6, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 10, 6, 4, 7, 2, 4, 2, 0, 2, 7, 11, -1, -1, -1, -1 },
            { 0, 1, 9, 4, 7, 8, 2, 3, 11, 5, 10, 6, -1, -1, -1, -1 },
            { 9, 2, 1, 9, 11, 2, 9, 4, 11, 7, 11, 4, 5, 10, 6, -1 },
            { 8, 4, 7, 3, 11, 5, 3, 5, 1, 5, 11, 6, -1, -1, -1, -1 },
            { 5, 1, 11, 5, 11, 6, 1, 0, 11, 7, 11, 4, 0, 4, 11, -1 },
            { 0, 5, 9, 0, 6, 5, 0, 3, 6, 11, 6, 3, 8, 4, 7, -1 },
            { 6, 5, 9, 6, 9, 11, 4, 7, 9, 7, 11, 9, -1, -1, -1, -1 },
            { 10, 4, 9, 6, 4, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 10, 6, 4, 9, 10, 0, 8, 3, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 0, 1, 10, 6, 0, 6, 4, 0, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 3, 1, 8, 1, 6, 8, 6, 4, 6, 1, 10, -1, -1, -1, -1 },
            { 1, 4, 9, 1, 2, 4, 2, 6, 4, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 0, 8, 1, 2, 9, 2, 4, 9, 2, 6, 4, -1, -1, -1, -1 },
            { 0, 2, 4, 4, 2, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 3, 2, 8, 2, 4, 4, 2, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 4, 9, 10, 6, 4, 11, 2, 3, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 2, 2, 8, 11, 4, 9, 10, 4, 10, 6, -1, -1, -1, -1 },
            { 3, 11, 2, 0, 1, 6, 0, 6, 4, 6, 1, 10, -1, -1, -1, -1 },
            { 6, 4, 1, 6, 1, 10, 4, 8, 1, 2, 1, 11, 8, 11, 1, -1 },
            { 9, 6, 4, 9, 3, 6, 9, 1, 3, 11, 6, 3, -1, -1, -1, -1 },
            { 8, 11, 1, 8, 1, 0, 11, 6, 1, 9, 1, 4, 6, 4, 1, -1 },
            { 3, 11, 6, 3, 6, 0, 0, 6, 4, -1, -1, -1, -1, -1, -1, -1 },
            { 6, 4, 8, 11, 6, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 7, 10, 6, 7, 8, 10, 8, 9, 10, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 7, 3, 0, 10, 7, 0, 9, 10, 6, 7, 10, -1, -1, -1, -1 },
            { 10, 6, 7, 1, 10, 7, 1, 7, 8, 1, 8, 0, -1, -1, -1, -1 },
            { 10, 6, 7, 10, 7, 1, 1, 7, 3, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 6, 1, 6, 8, 1, 8, 9, 8, 6, 7, -1, -1, -1, -1 },
            { 2, 6, 9, 2, 9, 1, 6, 7, 9, 0, 9, 3, 7, 3, 9, -1 },
            { 7, 8, 0, 7, 0, 6, 6, 0, 2, -1, -1, -1, -1, -1, -1, -1 },
            { 7, 3, 2, 6, 7, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 3, 11, 10, 6, 8, 10, 8, 9, 8, 6, 7, -1, -1, -1, -1 },
            { 2, 0, 7, 2, 7, 11, 0, 9, 7, 6, 7, 10, 9, 10, 7, -1 },
            { 1, 8, 0, 1, 7, 8, 1, 10, 7, 6, 7, 10, 2, 3, 11, -1 },
            { 11, 2, 1, 11, 1, 7, 10, 6, 1, 6, 7, 1, -1, -1, -1, -1 },
            { 8, 9, 6, 8, 6, 7, 9, 1, 6, 11, 6, 3, 1, 3, 6, -1 },
            { 0, 9, 1, 11, 6, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 7, 8, 0, 7, 0, 6, 3, 11, 0, 11, 6, 0, -1, -1, -1, -1 },
            { 7, 11, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 7, 6, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 0, 8, 11, 7, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 1, 9, 11, 7, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 1, 9, 8, 3, 1, 11, 7, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 1, 2, 6, 11, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 10, 3, 0, 8, 6, 11, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 9, 0, 2, 10, 9, 6, 11, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 6, 11, 7, 2, 10, 3, 10, 8, 3, 10, 9, 8, -1, -1, -1, -1 },
            { 7, 2, 3, 6, 2, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 7, 0, 8, 7, 6, 0, 6, 2, 0, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 7, 6, 2, 3, 7, 0, 1, 9, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 6, 2, 1, 8, 6, 1, 9, 8, 8, 7, 6, -1, -1, -1, -1 },
            { 10, 7, 6, 10, 1, 7, 1, 3, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 7, 6, 1, 7, 10, 1, 8, 7, 1, 0, 8, -1, -1, -1, -1 },
            { 0, 3, 7, 0, 7, 10, 0, 10, 9, 6, 10, 7, -1, -1, -1, -1 },
            { 7, 6, 10, 7, 10, 8, 8, 10, 9, -1, -1, -1, -1, -1, -1, -1 },
            { 6, 8, 4, 11, 8, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 6, 11, 3, 0, 6, 0, 4, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 6, 11, 8, 4, 6, 9, 0, 1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 4, 6, 9, 6, 3, 9, 3, 1, 11, 3, 6, -1, -1, -1, -1 },
            { 6, 8, 4, 6, 11, 8, 2, 10, 1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 10, 3, 0, 11, 0, 6, 11, 0, 4, 6, -1, -1, -1, -1 },
            { 4, 11, 8, 4, 6, 11, 0, 2, 9, 2, 10, 9, -1, -1, -1, -1 },
            { 10, 9, 3, 10, 3, 2, 9, 4, 3, 11, 3, 6, 4, 6, 3, -1 },
            { 8, 2, 3, 8, 4, 2, 4, 6, 2, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 4, 2, 4, 6, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 9, 0, 2, 3, 4, 2, 4, 6, 4, 3, 8, -1, -1, -1, -1 },
            { 1, 9, 4, 1, 4, 2, 2, 4, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 1, 3, 8, 6, 1, 8, 4, 6, 6, 10, 1, -1, -1, -1, -1 },
            { 10, 1, 0, 10, 0, 6, 6, 0, 4, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 6, 3, 4, 3, 8, 6, 10, 3, 0, 3, 9, 10, 9, 3, -1 },
            { 10, 9, 4, 6, 10, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 9, 5, 7, 6, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 3, 4, 9, 5, 11, 7, 6, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 0, 1, 5, 4, 0, 7, 6, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 11, 7, 6, 8, 3, 4, 3, 5, 4, 3, 1, 5, -1, -1, -1, -1 },
            { 9, 5, 4, 10, 1, 2, 7, 6, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 6, 11, 7, 1, 2, 10, 0, 8, 3, 4, 9, 5, -1, -1, -1, -1 },
            { 7, 6, 11, 5, 4, 10, 4, 2, 10, 4, 0, 2, -1, -1, -1, -1 },
            { 3, 4, 8, 3, 5, 4, 3, 2, 5, 10, 5, 2, 11, 7, 6, -1 },
            { 7, 2, 3, 7, 6, 2, 5, 4, 9, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 5, 4, 0, 8, 6, 0, 6, 2, 6, 8, 7, -1, -1, -1, -1 },
            { 3, 6, 2, 3, 7, 6, 1, 5, 0, 5, 4, 0, -1, -1, -1, -1 },
            { 6, 2, 8, 6, 8, 7, 2, 1, 8, 4, 8, 5, 1, 5, 8, -1 },
            { 9, 5, 4, 10, 1, 6, 1, 7, 6, 1, 3, 7, -1, -1, -1, -1 },
            { 1, 6, 10, 1, 7, 6, 1, 0, 7, 8, 7, 0, 9, 5, 4, -1 },
            { 4, 0, 10, 4, 10, 5, 0, 3, 10, 6, 10, 7, 3, 7, 10, -1 },
            { 7, 6, 10, 7, 10, 8, 5, 4, 10, 4, 8, 10, -1, -1, -1, -1 },
            { 6, 9, 5, 6, 11, 9, 11, 8, 9, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 6, 11, 0, 6, 3, 0, 5, 6, 0, 9, 5, -1, -1, -1, -1 },
            { 0, 11, 8, 0, 5, 11, 0, 1, 5, 5, 6, 11, -1, -1, -1, -1 },
            { 6, 11, 3, 6, 3, 5, 5, 3, 1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 10, 9, 5, 11, 9, 11, 8, 11, 5, 6, -1, -1, -1, -1 },
            { 0, 11, 3, 0, 6, 11, 0, 9, 6, 5, 6, 9, 1, 2, 10, -1 },
            { 11, 8, 5, 11, 5, 6, 8, 0, 5, 10, 5, 2, 0, 2, 5, -1 },
            { 6, 11, 3, 6, 3, 5, 2, 10, 3, 10, 5, 3, -1, -1, -1, -1 },
            { 5, 8, 9, 5, 2, 8, 5, 6, 2, 3, 8, 2, -1, -1, -1, -1 },
            { 9, 5, 6, 9, 6, 0, 0, 6, 2, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 5, 8, 1, 8, 0, 5, 6, 8, 3, 8, 2, 6, 2, 8, -1 },
            { 1, 5, 6, 2, 1, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 3, 6, 1, 6, 10, 3, 8, 6, 5, 6, 9, 8, 9, 6, -1 },
            { 10, 1, 0, 10, 0, 6, 9, 5, 0, 5, 6, 0, -1, -1, -1, -1 },
            { 0, 3, 8, 5, 6, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 5, 6, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 11, 5, 10, 7, 5, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 11, 5, 10, 11, 7, 5, 8, 3, 0, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 11, 7, 5, 10, 11, 1, 9, 0, -1, -1, -1, -1, -1, -1, -1 },
            { 10, 7, 5, 10, 11, 7, 9, 8, 1, 8, 3, 1, -1, -1, -1, -1 },
            { 11, 1, 2, 11, 7, 1, 7, 5, 1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 3, 1, 2, 7, 1, 7, 5, 7, 2, 11, -1, -1, -1, -1 },
            { 9, 7, 5, 9, 2, 7, 9, 0, 2, 2, 11, 7, -1, -1, -1, -1 },
            { 7, 5, 2, 7, 2, 11, 5, 9, 2, 3, 2, 8, 9, 8, 2, -1 },
            { 2, 5, 10, 2, 3, 5, 3, 7, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 2, 0, 8, 5, 2, 8, 7, 5, 10, 2, 5, -1, -1, -1, -1 },
            { 9, 0, 1, 5, 10, 3, 5, 3, 7, 3, 10, 2, -1, -1, -1, -1 },
            { 9, 8, 2, 9, 2, 1, 8, 7, 2, 10, 2, 5, 7, 5, 2, -1 },
            { 1, 3, 5, 3, 7, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 7, 0, 7, 1, 1, 7, 5, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 0, 3, 9, 3, 5, 5, 3, 7, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 8, 7, 5, 9, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 8, 4, 5, 10, 8, 10, 11, 8, -1, -1, -1, -1, -1, -1, -1 },
            { 5, 0, 4, 5, 11, 0, 5, 10, 11, 11, 3, 0, -1, -1, -1, -1 },
            { 0, 1, 9, 8, 4, 10, 8, 10, 11, 10, 4, 5, -1, -1, -1, -1 },
            { 10, 11, 4, 10, 4, 5, 11, 3, 4, 9, 4, 1, 3, 1, 4, -1 },
            { 2, 5, 1, 2, 8, 5, 2, 11, 8, 4, 5, 8, -1, -1, -1, -1 },
            { 0, 4, 11, 0, 11, 3, 4, 5, 11, 2, 11, 1, 5, 1, 11, -1 },
            { 0, 2, 5, 0, 5, 9, 2, 11, 5, 4, 5, 8, 11, 8, 5, -1 },
            { 9, 4, 5, 2, 11, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 5, 10, 3, 5, 2, 3, 4, 5, 3, 8, 4, -1, -1, -1, -1 },
            { 5, 10, 2, 5, 2, 4, 4, 2, 0, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 10, 2, 3, 5, 10, 3, 8, 5, 4, 5, 8, 0, 1, 9, -1 },
            { 5, 10, 2, 5, 2, 4, 1, 9, 2, 9, 4, 2, -1, -1, -1, -1 },
            { 8, 4, 5, 8, 5, 3, 3, 5, 1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 4, 5, 1, 0, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 8, 4, 5, 8, 5, 3, 9, 0, 5, 0, 3, 5, -1, -1, -1, -1 },
            { 9, 4, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 11, 7, 4, 9, 11, 9, 10, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 8, 3, 4, 9, 7, 9, 11, 7, 9, 10, 11, -1, -1, -1, -1 },
            { 1, 10, 11, 1, 11, 4, 1, 4, 0, 7, 4, 11, -1, -1, -1, -1 },
            { 3, 1, 4, 3, 4, 8, 1, 10, 4, 7, 4, 11, 10, 11, 4, -1 },
            { 4, 11, 7, 9, 11, 4, 9, 2, 11, 9, 1, 2, -1, -1, -1, -1 },
            { 9, 7, 4, 9, 11, 7, 9, 1, 11, 2, 11, 1, 0, 8, 3, -1 },
            { 11, 7, 4, 11, 4, 2, 2, 4, 0, -1, -1, -1, -1, -1, -1, -1 },
            { 11, 7, 4, 11, 4, 2, 8, 3, 4, 3, 2, 4, -1, -1, -1, -1 },
            { 2, 9, 10, 2, 7, 9, 2, 3, 7, 7, 4, 9, -1, -1, -1, -1 },
            { 9, 10, 7, 9, 7, 4, 10, 2, 7, 8, 7, 0, 2, 0, 7, -1 },
            { 3, 7, 10, 3, 10, 2, 7, 4, 10, 1, 10, 0, 4, 0, 10, -1 },
            { 1, 10, 2, 8, 7, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 9, 1, 4, 1, 7, 7, 1, 3, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 9, 1, 4, 1, 7, 0, 8, 1, 8, 7, 1, -1, -1, -1, -1 },
            { 4, 0, 3, 7, 4, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 4, 8, 7, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 10, 8, 10, 11, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 0, 9, 3, 9, 11, 11, 9, 10, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 1, 10, 0, 10, 8, 8, 10, 11, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 1, 10, 11, 3, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 2, 11, 1, 11, 9, 9, 11, 8, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 0, 9, 3, 9, 11, 1, 2, 9, 2, 11, 9, -1, -1, -1, -1 },
            { 0, 2, 11, 8, 0, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 3, 2, 11, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 3, 8, 2, 8, 10, 10, 8, 9, -1, -1, -1, -1, -1, -1, -1 },
            { 9, 10, 2, 0, 9, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 2, 3, 8, 2, 8, 10, 0, 1, 8, 1, 10, 8, -1, -1, -1, -1 },
            { 1, 10, 2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 1, 3, 8, 9, 1, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 9, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { 0, 3, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
            { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
    };

    private static final float[][] s_cube = {
            { 0.0f, 1.0f, 1.0f }, // 0
            { 1.0f, 1.0f, 1.0f }, // 1
            { 1.0f, 1.0f, 0.0f }, // 2
            { 0.0f, 1.0f, 0.0f }, // 3
            { 0.0f, 0.0f, 1.0f }, // 4
            { 1.0f, 0.0f, 1.0f }, // 5
            { 1.0f, 0.0f, 0.0f }, // 6
            { 0.0f, 0.0f, 0.0f }, // 7
    };

    public static void main(String[] args) {
        new Metaballs().run(args);
    }

    private Metaballs() {
        super("02-Metaballs");
    }

    private static float vertLerp(float[] _result, float _iso, int _idx0, float _v0, int _idx1, float _v1) {
        float[] edge0 = s_cube[_idx0];
        float[] edge1 = s_cube[_idx1];

        if (Math.abs(_iso - _v1) < 0.00001f) {
            _result[0] = edge1[0];
            _result[1] = edge1[1];
            _result[2] = edge1[2];
            return 1.0f;
        }

        if (Math.abs(_iso - _v0) < 0.00001f
                || Math.abs(_v0 - _v1) < 0.00001f) {
            _result[0] = edge0[0];
            _result[1] = edge0[1];
            _result[2] = edge0[2];
            return 0.0f;
        }

        float lerp = (_iso - _v0) / (_v1 - _v0);
        _result[0] = edge0[0] + lerp * (edge1[0] - edge0[0]);
        _result[1] = edge0[1] + lerp * (edge1[1] - edge0[1]);
        _result[2] = edge0[2] + lerp * (edge1[2] - edge0[2]);

        return lerp;
    }

    private static final float[][] verts = new float[12][6];
    private static final int[] idxTable = { 1, 2, 3, 0, 5, 6, 7, 4, 4, 5, 6, 7 };
    private static final float[][] sphere = new float[16][4];
    private static final float[] rgb = new float[6];
    private static final Grid[] gridTable = new Grid[8];

    private static int triangulate(ByteBuffer _result, int _stride, float[] _rgb, Vector3f _xyz, Grid[] _val, float _iso) {
        int cubeindex = 0;
        cubeindex |= (_val[0].val < _iso) ? 0x01 : 0;
        cubeindex |= (_val[1].val < _iso) ? 0x02 : 0;
        cubeindex |= (_val[2].val < _iso) ? 0x04 : 0;
        cubeindex |= (_val[3].val < _iso) ? 0x08 : 0;
        cubeindex |= (_val[4].val < _iso) ? 0x10 : 0;
        cubeindex |= (_val[5].val < _iso) ? 0x20 : 0;
        cubeindex |= (_val[6].val < _iso) ? 0x40 : 0;
        cubeindex |= (_val[7].val < _iso) ? 0x80 : 0;

        if (0 == s_edges[cubeindex]) {
            return 0;
        }

        int flags = s_edges[cubeindex];

        for (int ii = 0; ii < 12; ++ii) {
            if ((flags & (1 << ii)) != 0) {
                int idx0 = ii & 7;
                int idx1 = idxTable[ii];
                float[] vertex = verts[ii];
                float lerp = vertLerp(vertex, _iso, idx0, _val[idx0].val, idx1, _val[idx1].val);

                Vector3f na = _val[idx0].normal;
                Vector3f nb = _val[idx1].normal;
                vertex[3] = na.x + lerp * (nb.x - na.x);
                vertex[4] = na.y + lerp * (nb.y - na.y);
                vertex[5] = na.z + lerp * (nb.z - na.z);
            }
        }

        float dr = _rgb[3] - _rgb[0];
        float dg = _rgb[4] - _rgb[1];
        float db = _rgb[5] - _rgb[2];

        int num = 0;
        int[] indices = s_indices[cubeindex];
        for (int ii = 0; indices[ii] != -1; ++ii) {
            float[] vertex = verts[indices[ii]];

            _result.putFloat(_xyz.x + vertex[0]);
            _result.putFloat(_xyz.y + vertex[1]);
            _result.putFloat(_xyz.z + vertex[2]);

            _result.putFloat(vertex[3]);
            _result.putFloat(vertex[4]);
            _result.putFloat(vertex[5]);

            int rr = (int) ((_rgb[0] + vertex[0] * dr) * 255.0f) & 0xff;
            int gg = (int) ((_rgb[1] + vertex[1] * dg) * 255.0f) & 0xff;
            int bb = (int) ((_rgb[2] + vertex[2] * db) * 255.0f) & 0xff;

            _result.putInt(0xff000000
                    | (bb << 16)
                    | (gg << 8)
                    | rr);

            _result.position(_result.position() + _stride - 28);

            ++num;
        }

        return num;
    }

    @Override
    protected void create() throws IOException {
        layout = BGFXDemoUtil.createVertexLayout(true, true, 0);

        short vs = BGFXDemoUtil.loadShader(vs_metaballs_glsl, vs_metaballs_dx9, vs_metaballs_dx11, vs_metaballs_mtl);
        short fs = BGFXDemoUtil.loadShader(fs_metaballs_glsl, fs_metaballs_dx9, fs_metaballs_dx11, fs_metaballs_mtl);

        program = bgfx_create_program(vs, fs, true);

        viewBuf = MemoryUtil.memAllocFloat(16);
        projBuf = MemoryUtil.memAllocFloat(16);
        modelBuf = MemoryUtil.memAllocFloat(16);

        for (int i = 0; i < DIMS * DIMS * DIMS; i++) {
            grid[i] = new Grid();
        }
    }

    @Override
    protected void frame(float time, float frameTime) {
        try (MemoryStack stack = MemoryStack.stackPush()) {
            int ypitch = DIMS;
            int zpitch = DIMS * DIMS;
            float invdim = 1.0f / (DIMS - 1);

            double freq = glfwGetTimerFrequency();
            double toMs = 1000.0 / freq;

            bgfx_dbg_text_printf(0, 1, 0x4f, "bgfx/examples/02-metaball");
            bgfx_dbg_text_printf(0, 2, 0x6f, "Description: Rendering with transient buffers and embedding shaders.");

            Vector3f eye = new Vector3f(0.0f, 0.0f, -50.0f);

            BGFXDemoUtil.lookAt(new Vector3f(0.0f, 0.0f, 0.0f), eye, view);
            BGFXDemoUtil.perspective(60.0f, getWindowWidth(), getWindowHeight(), 0.1f, 100.0f, proj);

            bgfx_set_view_transform(0, view.get4x4(viewBuf), proj.get(projBuf));

            bgfx_set_view_rect(0, 0, 0, getWindowWidth(), getWindowHeight());

            // Stats.
            int numVertices = 0;
            long profUpdate;
            long profNormal;
            long profTriangulate;

            // Allocate 32K vertices in transient vertex buffer.
            int maxVertices = (32 << 10);
            BGFXTransientVertexBuffer tvb = BGFXTransientVertexBuffer.calloc(stack);
            bgfx_alloc_transient_vertex_buffer(tvb, maxVertices, layout);

            int numSpheres = 16;
            for (int ii = 0; ii < numSpheres; ++ii) {
                sphere[ii][0] = (float) (sin(time * (ii * 0.21f) + ii * 0.37f) * (DIMS * 0.5f - 8.0f));
                sphere[ii][1] = (float) (sin(time * (ii * 0.37f) + ii * 0.67f) * (DIMS * 0.5f - 8.0f));
                sphere[ii][2] = (float) (cos(time * (ii * 0.11f) + ii * 0.13f) * (DIMS * 0.5f - 8.0f));
                sphere[ii][3] = (1.0f / (2.0f + (float) (sin(time * (ii * 0.13f)) * 0.5f + 0.5f) * 2.0f));
            }

            profUpdate = glfwGetTimerValue();

            for (int zz = 0; zz < DIMS; ++zz) {
                for (int yy = 0; yy < DIMS; ++yy) {
                    int offset = (zz * DIMS + yy) * DIMS;

                    for (int xx = 0; xx < DIMS; ++xx) {
                        int xoffset = offset + xx;

                        float dist = 0.0f;
                        float prod = 1.0f;
                        for (int ii = 0; ii < numSpheres; ++ii) {
                            float[] pos = sphere[ii];
                            float dx = pos[0] - (-DIMS * 0.5f + xx);
                            float dy = pos[1] - (-DIMS * 0.5f + yy);
                            float dz = pos[2] - (-DIMS * 0.5f + zz);
                            float invr = pos[3];
                            float dot = dx * dx + dy * dy + dz * dz;
                            dot *= invr * invr;

                            dist *= dot;
                            dist += prod;
                            prod *= dot;
                        }

                        grid[xoffset].val = dist / prod - 1.0f;
                    }
                }
            }

            profUpdate = glfwGetTimerValue() - profUpdate;

            profNormal = glfwGetTimerValue();

            for (int zz = 1; zz < DIMS - 1; ++zz) {
                for (int yy = 1; yy < DIMS - 1; ++yy) {
                    int offset = (zz * DIMS + yy) * DIMS;

                    for (int xx = 1; xx < DIMS - 1; ++xx) {
                        int xoffset = offset + xx;

                        Grid[] grid = this.grid;
                        Vector3f normal = new Vector3f(
                                grid[xoffset - 1].val - grid[xoffset + 1].val,
                                grid[xoffset - ypitch].val - grid[xoffset + ypitch].val,
                                grid[xoffset - zpitch].val - grid[xoffset + zpitch].val
                        );

                        normal.normalize(grid[xoffset].normal);
                    }
                }
            }

            profNormal = glfwGetTimerValue() - profNormal;

            profTriangulate = glfwGetTimerValue();

            ByteBuffer vertex = tvb.data();

            for (int zz = 0; zz < DIMS - 1 && numVertices + 12 < maxVertices; ++zz) {
                rgb[2] = zz * invdim;
                rgb[5] = (zz + 1) * invdim;

                for (int yy = 0; yy < DIMS - 1 && numVertices + 12 < maxVertices; ++yy) {
                    int offset = (zz * DIMS + yy) * DIMS;

                    rgb[1] = yy * invdim;
                    rgb[4] = (yy + 1) * invdim;

                    for (int xx = 0; xx < DIMS - 1 && numVertices + 12 < maxVertices; ++xx) {
                        int xoffset = offset + xx;

                        rgb[0] = xx * invdim;
                        rgb[3] = (xx + 1) * invdim;

                        Vector3f pos = new Vector3f(
                                -DIMS * 0.5f + xx,
                                -DIMS * 0.5f + yy,
                                -DIMS * 0.5f + zz
                        );

                        Grid[] grid = this.grid;

                        gridTable[0] = grid[xoffset + zpitch + ypitch];
                        gridTable[1] = grid[xoffset + zpitch + ypitch + 1];
                        gridTable[2] = grid[xoffset + ypitch + 1];
                        gridTable[3] = grid[xoffset + ypitch];
                        gridTable[4] = grid[xoffset + zpitch];
                        gridTable[5] = grid[xoffset + zpitch + 1];
                        gridTable[6] = grid[xoffset + 1];
                        gridTable[7] = grid[xoffset];

                        int num = triangulate(vertex, layout.stride(), rgb, pos, gridTable, 0.5f);
                        numVertices += num;
                    }
                }
            }

            profTriangulate = glfwGetTimerValue() - profTriangulate;

            model
                    .rotationXYZ(
                            time * 0.67f,
                            time,
                            0.0f)
            ;

            long encoder = bgfx_encoder_begin(false);

            bgfx_encoder_set_transform(encoder, model.get4x4(modelBuf));

            // Set vertex and index buffer.
            bgfx_encoder_set_transient_vertex_buffer(encoder, 0, tvb, 0, numVertices);

            // Set render states.
            bgfx_encoder_set_state(encoder, BGFX_STATE_DEFAULT, 0);

            // Submit primitive for rendering to view 0.
            bgfx_encoder_submit(encoder, 0, program, 0, 0);

            bgfx_encoder_end(encoder);

            // Display stats.
            bgfx_dbg_text_printf(1, 4, 0x0f, String.format("Num vertices: %5d (%6.4f percent)", numVertices, (float) numVertices / maxVertices * 100));
            bgfx_dbg_text_printf(1, 5, 0x0f, String.format("      Update: % 7.3f[ms]", profUpdate * toMs));
            bgfx_dbg_text_printf(1, 6, 0x0f, String.format("Calc normals: % 7.3f[ms]", profNormal * toMs));
            bgfx_dbg_text_printf(1, 7, 0x0f, String.format(" Triangulate: % 7.3f[ms]", profTriangulate * toMs));
            bgfx_dbg_text_printf(1, 8, 0x0f, String.format("       Frame: % 7.3f[ms]", frameTime));
        }
    }

    @Override
    protected void dispose() {
        MemoryUtil.memFree(viewBuf);
        MemoryUtil.memFree(projBuf);
        MemoryUtil.memFree(modelBuf);

        bgfx_destroy_program(program);
        layout.free();
    }

    /*
        from: fs_metaballs_bin.h
     */
    private static final char[] fs_metaballs_glsl = {
        0x46, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x00, 0x00, 0x7f, 0x01, 0x00, 0x00, 0x76, 0x61, // FSH..,.?......va
        0x72, 0x79, 0x69, 0x6e, 0x67, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, 0x65, 0x63, 0x34, // rying highp vec4
        0x20, 0x76, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x3b, 0x0a, 0x76, 0x61, 0x72, 0x79, 0x69, //  v_color0;.varyi
        0x6e, 0x67, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, 0x65, 0x63, 0x33, 0x20, 0x76, 0x5f, // ng highp vec3 v_
        0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x3b, 0x0a, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x6d, 0x61, 0x69, // normal;.void mai
        0x6e, 0x20, 0x28, 0x29, 0x0a, 0x7b, 0x0a, 0x20, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x66, // n ().{.  highp f
        0x6c, 0x6f, 0x61, 0x74, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x3b, 0x0a, 0x20, // loat tmpvar_1;.
        0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x20, 0x3d, 0x20, 0x64, 0x6f, 0x74, 0x20, //  tmpvar_1 = dot
        0x28, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x69, 0x7a, 0x65, 0x28, 0x76, 0x5f, 0x6e, 0x6f, 0x72, // (normalize(v_nor
        0x6d, 0x61, 0x6c, 0x29, 0x2c, 0x20, 0x76, 0x65, 0x63, 0x33, 0x28, 0x30, 0x2e, 0x30, 0x2c, 0x20, // mal), vec3(0.0,
        0x30, 0x2e, 0x30, 0x2c, 0x20, 0x2d, 0x31, 0x2e, 0x30, 0x29, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x6d, // 0.0, -1.0));.  m
        0x65, 0x64, 0x69, 0x75, 0x6d, 0x70, 0x20, 0x76, 0x65, 0x63, 0x34, 0x20, 0x74, 0x6d, 0x70, 0x76, // ediump vec4 tmpv
        0x61, 0x72, 0x5f, 0x32, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, // ar_2;.  tmpvar_2
        0x2e, 0x77, 0x20, 0x3d, 0x20, 0x31, 0x2e, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, // .w = 1.0;.  tmpv
        0x61, 0x72, 0x5f, 0x32, 0x2e, 0x78, 0x79, 0x7a, 0x20, 0x3d, 0x20, 0x70, 0x6f, 0x77, 0x20, 0x28, // ar_2.xyz = pow (
        0x28, 0x28, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x70, 0x6f, 0x77, 0x20, 0x28, 0x76, 0x5f, 0x63, 0x6f, // ((.    pow (v_co
        0x6c, 0x6f, 0x72, 0x30, 0x2e, 0x78, 0x79, 0x7a, 0x2c, 0x20, 0x76, 0x65, 0x63, 0x33, 0x28, 0x32, // lor0.xyz, vec3(2
        0x2e, 0x32, 0x2c, 0x20, 0x32, 0x2e, 0x32, 0x2c, 0x20, 0x32, 0x2e, 0x32, 0x29, 0x29, 0x0a, 0x20, // .2, 2.2, 2.2)).
        0x20, 0x20, 0x2a, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x29, 0x20, 0x2b, 0x20, //   * tmpvar_1) +
        0x70, 0x6f, 0x77, 0x20, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2c, 0x20, 0x33, // pow (tmpvar_1, 3
        0x30, 0x2e, 0x30, 0x29, 0x29, 0x2c, 0x20, 0x76, 0x65, 0x63, 0x33, 0x28, 0x30, 0x2e, 0x34, 0x35, // 0.0)), vec3(0.45
        0x34, 0x35, 0x34, 0x35, 0x34, 0x2c, 0x20, 0x30, 0x2e, 0x34, 0x35, 0x34, 0x35, 0x34, 0x35, 0x34, // 45454, 0.4545454
        0x2c, 0x20, 0x30, 0x2e, 0x34, 0x35, 0x34, 0x35, 0x34, 0x35, 0x34, 0x29, 0x29, 0x3b, 0x0a, 0x20, // , 0.4545454));.
        0x20, 0x67, 0x6c, 0x5f, 0x46, 0x72, 0x61, 0x67, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x20, 0x3d, 0x20, //  gl_FragColor =
        0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x3b, 0x0a, 0x7d, 0x0a, 0x0a, 0x00,             // tmpvar_2;.}...
    };

    private static final char[] fs_metaballs_dx9 = {
        0x46, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x00, 0x00, 0x98, 0x01, 0x00, 0x00, 0x00, 0x03, // FSH..,.?........
        0xff, 0xff, 0xfe, 0xff, 0x14, 0x00, 0x43, 0x54, 0x41, 0x42, 0x1c, 0x00, 0x00, 0x00, 0x23, 0x00, // ......CTAB....#.
        0x00, 0x00, 0x00, 0x03, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x91, // ................
        0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x70, 0x73, 0x5f, 0x33, 0x5f, 0x30, 0x00, 0x4d, 0x69, 0x63, // ......ps_3_0.Mic
        0x72, 0x6f, 0x73, 0x6f, 0x66, 0x74, 0x20, 0x28, 0x52, 0x29, 0x20, 0x48, 0x4c, 0x53, 0x4c, 0x20, // rosoft (R) HLSL
        0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x20, 0x43, 0x6f, 0x6d, 0x70, 0x69, 0x6c, 0x65, 0x72, 0x20, // Shader Compiler
        0x31, 0x30, 0x2e, 0x31, 0x00, 0xab, 0x51, 0x00, 0x00, 0x05, 0x00, 0x00, 0x0f, 0xa0, 0x00, 0x00, // 10.1..Q.........
        0xf0, 0x41, 0xcd, 0xcc, 0x0c, 0x40, 0x2f, 0xba, 0xe8, 0x3e, 0x00, 0x00, 0x80, 0x3f, 0x1f, 0x00, // .A...@/..>...?..
        0x00, 0x02, 0x0a, 0x00, 0x00, 0x80, 0x00, 0x00, 0x07, 0x90, 0x1f, 0x00, 0x00, 0x02, 0x05, 0x00, // ................
        0x01, 0x80, 0x01, 0x00, 0x07, 0x90, 0x08, 0x00, 0x00, 0x03, 0x00, 0x00, 0x01, 0x80, 0x01, 0x00, // ................
        0xe4, 0x90, 0x01, 0x00, 0xe4, 0x90, 0x07, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, // ................
        0x00, 0x80, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x80, 0x01, 0x00, // ................
        0xaa, 0x90, 0x20, 0x00, 0x00, 0x03, 0x01, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x81, 0x00, 0x00, // .. .............
        0x00, 0xa0, 0x0f, 0x00, 0x00, 0x02, 0x02, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x90, 0x0f, 0x00, // ................
        0x00, 0x02, 0x02, 0x00, 0x02, 0x80, 0x00, 0x00, 0x55, 0x90, 0x0f, 0x00, 0x00, 0x02, 0x02, 0x00, // ........U.......
        0x04, 0x80, 0x00, 0x00, 0xaa, 0x90, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x0e, 0x80, 0x02, 0x00, // ................
        0x90, 0x80, 0x00, 0x00, 0x55, 0xa0, 0x0e, 0x00, 0x00, 0x02, 0x02, 0x00, 0x01, 0x80, 0x00, 0x00, // ....U...........
        0x55, 0x80, 0x0e, 0x00, 0x00, 0x02, 0x02, 0x00, 0x02, 0x80, 0x00, 0x00, 0xaa, 0x80, 0x0e, 0x00, // U...............
        0x00, 0x02, 0x02, 0x00, 0x04, 0x80, 0x00, 0x00, 0xff, 0x80, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, // ................
        0x07, 0x80, 0x02, 0x00, 0xe4, 0x80, 0x00, 0x00, 0x00, 0x81, 0x01, 0x00, 0x00, 0x80, 0x0f, 0x00, // ................
        0x00, 0x02, 0x01, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x80, 0x0f, 0x00, 0x00, 0x02, 0x01, 0x00, // ................
        0x02, 0x80, 0x00, 0x00, 0x55, 0x80, 0x0f, 0x00, 0x00, 0x02, 0x01, 0x00, 0x04, 0x80, 0x00, 0x00, // ....U...........
        0xaa, 0x80, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x07, 0x80, 0x01, 0x00, 0xe4, 0x80, 0x00, 0x00, // ................
        0xaa, 0xa0, 0x0e, 0x00, 0x00, 0x02, 0x00, 0x08, 0x01, 0x80, 0x00, 0x00, 0x00, 0x80, 0x0e, 0x00, // ................
        0x00, 0x02, 0x00, 0x08, 0x02, 0x80, 0x00, 0x00, 0x55, 0x80, 0x0e, 0x00, 0x00, 0x02, 0x00, 0x08, // ........U.......
        0x04, 0x80, 0x00, 0x00, 0xaa, 0x80, 0x01, 0x00, 0x00, 0x02, 0x00, 0x08, 0x08, 0x80, 0x00, 0x00, // ................
        0xff, 0xa0, 0xff, 0xff, 0x00, 0x00, 0x00,                                                       // .......
    };

    private static final char[] fs_metaballs_dx11 = {
        0x46, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x00, 0x00, 0x84, 0x02, 0x00, 0x00, 0x44, 0x58, // FSH..,.?......DX
        0x42, 0x43, 0x71, 0x00, 0x85, 0x0b, 0x80, 0xfd, 0x1e, 0xdf, 0x09, 0x21, 0xdf, 0xe6, 0x3a, 0xef, // BCq........!..:.
        0x53, 0xf8, 0x01, 0x00, 0x00, 0x00, 0x84, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x2c, 0x00, // S.............,.
        0x00, 0x00, 0xa0, 0x00, 0x00, 0x00, 0xd4, 0x00, 0x00, 0x00, 0x49, 0x53, 0x47, 0x4e, 0x6c, 0x00, // ..........ISGNl.
        0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, // ..........P.....
        0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x00, // ................
        0x00, 0x00, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, // ................
        0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0f, 0x07, 0x00, 0x00, 0x62, 0x00, 0x00, 0x00, 0x01, 0x00, // ..........b.....
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x07, 0x07, // ................
        0x00, 0x00, 0x53, 0x56, 0x5f, 0x50, 0x4f, 0x53, 0x49, 0x54, 0x49, 0x4f, 0x4e, 0x00, 0x43, 0x4f, // ..SV_POSITION.CO
        0x4c, 0x4f, 0x52, 0x00, 0x54, 0x45, 0x58, 0x43, 0x4f, 0x4f, 0x52, 0x44, 0x00, 0xab, 0x4f, 0x53, // LOR.TEXCOORD..OS
        0x47, 0x4e, 0x2c, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x20, 0x00, // GN,........... .
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // ................
        0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x53, 0x56, 0x5f, 0x54, 0x41, 0x52, 0x47, 0x45, 0x54, 0x00, // ......SV_TARGET.
        0xab, 0xab, 0x53, 0x48, 0x44, 0x52, 0xa8, 0x01, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x6a, 0x00, // ..SHDR....@...j.
        0x00, 0x00, 0x62, 0x10, 0x00, 0x03, 0x72, 0x10, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x62, 0x10, // ..b...r.......b.
        0x00, 0x03, 0x72, 0x10, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x65, 0x00, 0x00, 0x03, 0xf2, 0x20, // ..r.......e....
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x68, 0x00, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00, 0x2f, 0x00, // ......h......./.
        0x00, 0x05, 0x72, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x12, 0x10, 0x00, 0x01, 0x00, // ..r.......F.....
        0x00, 0x00, 0x38, 0x00, 0x00, 0x0a, 0x72, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x02, // ..8...r.......F.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x40, 0x00, 0x00, 0xcd, 0xcc, 0x0c, 0x40, 0xcd, 0xcc, // .......@.....@..
        0x0c, 0x40, 0xcd, 0xcc, 0x0c, 0x40, 0x00, 0x00, 0x00, 0x00, 0x19, 0x00, 0x00, 0x05, 0x72, 0x00, // .@...@........r.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x02, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, // ......F.........
        0x00, 0x07, 0x82, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x12, 0x10, 0x00, 0x02, 0x00, // ..........F.....
        0x00, 0x00, 0x46, 0x12, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x05, 0x82, 0x00, // ..F.......D.....
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, // ......:.......8.
        0x00, 0x07, 0x82, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x10, 0x00, 0x00, 0x00, // ..........:.....
        0x00, 0x00, 0x2a, 0x10, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00, 0x06, 0x12, 0x00, // ..*......./.....
        0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x10, 0x80, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, // ......:...A.....
        0x00, 0x00, 0x38, 0x00, 0x00, 0x07, 0x12, 0x00, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0a, 0x00, // ..8.............
        0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x41, 0x19, 0x00, // .......@.....A..
        0x00, 0x05, 0x12, 0x00, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x10, 0x00, 0x01, 0x00, // ................
        0x00, 0x00, 0x32, 0x00, 0x00, 0x0a, 0x72, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x02, // ..2...r.......F.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf6, 0x0f, 0x10, 0x80, 0x41, 0x00, 0x00, 0x00, 0x00, 0x00, // ..........A.....
        0x00, 0x00, 0x06, 0x00, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00, 0x05, 0x72, 0x00, // ........../...r.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x02, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, // ......F.......8.
        0x00, 0x0a, 0x72, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x02, 0x10, 0x00, 0x00, 0x00, // ..r.......F.....
        0x00, 0x00, 0x02, 0x40, 0x00, 0x00, 0x2f, 0xba, 0xe8, 0x3e, 0x2f, 0xba, 0xe8, 0x3e, 0x2f, 0xba, // ...@../..>/..>/.
        0xe8, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x19, 0x00, 0x00, 0x05, 0x72, 0x20, 0x10, 0x00, 0x00, 0x00, // .>........r ....
        0x00, 0x00, 0x46, 0x02, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x05, 0x82, 0x20, // ..F.......6....
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x80, 0x3f, 0x3e, 0x00, // .......@.....?>.
        0x00, 0x01, 0x00, 0x00, 0x00, 0x00,                                                             // ......
    };

    private static final char[] fs_metaballs_mtl = {
        0x46, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x00, 0x00, 0xb9, 0x02, 0x00, 0x00, 0x75, 0x73, // FSH..,.?......us
        0x69, 0x6e, 0x67, 0x20, 0x6e, 0x61, 0x6d, 0x65, 0x73, 0x70, 0x61, 0x63, 0x65, 0x20, 0x6d, 0x65, // ing namespace me
        0x74, 0x61, 0x6c, 0x3b, 0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x20, 0x78, 0x6c, 0x61, 0x74, // tal;.struct xlat
        0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x20, 0x7b, // MtlShaderInput {
        0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x76, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, // .  float4 v_colo
        0x72, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x33, 0x20, 0x76, 0x5f, 0x6e, // r0;.  float3 v_n
        0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x3b, 0x0a, 0x7d, 0x3b, 0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, // ormal;.};.struct
        0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, //  xlatMtlShaderOu
        0x74, 0x70, 0x75, 0x74, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, // tput {.  float4
        0x67, 0x6c, 0x5f, 0x46, 0x72, 0x61, 0x67, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x3b, 0x0a, 0x7d, 0x3b, // gl_FragColor;.};
        0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, // .struct xlatMtlS
        0x68, 0x61, 0x64, 0x65, 0x72, 0x55, 0x6e, 0x69, 0x66, 0x6f, 0x72, 0x6d, 0x20, 0x7b, 0x0a, 0x7d, // haderUniform {.}
        0x3b, 0x0a, 0x66, 0x72, 0x61, 0x67, 0x6d, 0x65, 0x6e, 0x74, 0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, // ;.fragment xlatM
        0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, 0x20, 0x78, // tlShaderOutput x
        0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x4d, 0x61, 0x69, 0x6e, 0x20, 0x28, 0x78, 0x6c, 0x61, 0x74, // latMtlMain (xlat
        0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x20, 0x5f, // MtlShaderInput _
        0x6d, 0x74, 0x6c, 0x5f, 0x69, 0x20, 0x5b, 0x5b, 0x73, 0x74, 0x61, 0x67, 0x65, 0x5f, 0x69, 0x6e, // mtl_i [[stage_in
        0x5d, 0x5d, 0x2c, 0x20, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x74, 0x20, 0x78, 0x6c, 0x61, // ]], constant xla
        0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x55, 0x6e, 0x69, 0x66, 0x6f, 0x72, // tMtlShaderUnifor
        0x6d, 0x26, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x75, 0x20, 0x5b, 0x5b, 0x62, 0x75, 0x66, 0x66, // m& _mtl_u [[buff
        0x65, 0x72, 0x28, 0x30, 0x29, 0x5d, 0x5d, 0x29, 0x0a, 0x7b, 0x0a, 0x20, 0x20, 0x78, 0x6c, 0x61, // er(0)]]).{.  xla
        0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, // tMtlShaderOutput
        0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, //  _mtl_o;.  float
        0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x20, 0x3d, 0x20, 0x30, 0x3b, 0x0a, 0x20, //  tmpvar_1 = 0;.
        0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x20, 0x3d, 0x20, 0x64, 0x6f, 0x74, 0x20, //  tmpvar_1 = dot
        0x28, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x69, 0x7a, 0x65, 0x28, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, // (normalize(_mtl_
        0x69, 0x2e, 0x76, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x29, 0x2c, 0x20, 0x66, 0x6c, 0x6f, // i.v_normal), flo
        0x61, 0x74, 0x33, 0x28, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x30, 0x2e, 0x30, 0x2c, 0x20, 0x2d, 0x31, // at3(0.0, 0.0, -1
        0x2e, 0x30, 0x29, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x74, // .0));.  float4 t
        0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x20, 0x3d, 0x20, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x74, // mpvar_2 = 0;.  t
        0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x2e, 0x77, 0x20, 0x3d, 0x20, 0x31, 0x2e, 0x30, 0x3b, // mpvar_2.w = 1.0;
        0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x2e, 0x78, 0x79, 0x7a, 0x20, // .  tmpvar_2.xyz
        0x3d, 0x20, 0x70, 0x6f, 0x77, 0x20, 0x28, 0x28, 0x28, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x70, 0x6f, // = pow (((.    po
        0x77, 0x20, 0x28, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x69, 0x2e, 0x76, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, // w (_mtl_i.v_colo
        0x72, 0x30, 0x2e, 0x78, 0x79, 0x7a, 0x2c, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x33, 0x28, 0x32, // r0.xyz, float3(2
        0x2e, 0x32, 0x2c, 0x20, 0x32, 0x2e, 0x32, 0x2c, 0x20, 0x32, 0x2e, 0x32, 0x29, 0x29, 0x0a, 0x20, // .2, 2.2, 2.2)).
        0x20, 0x20, 0x2a, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x29, 0x20, 0x2b, 0x20, //   * tmpvar_1) +
        0x70, 0x6f, 0x77, 0x20, 0x28, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2c, 0x20, 0x33, // pow (tmpvar_1, 3
        0x30, 0x2e, 0x30, 0x29, 0x29, 0x2c, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x33, 0x28, 0x30, 0x2e, // 0.0)), float3(0.
        0x34, 0x35, 0x34, 0x35, 0x34, 0x35, 0x34, 0x2c, 0x20, 0x30, 0x2e, 0x34, 0x35, 0x34, 0x35, 0x34, // 4545454, 0.45454
        0x35, 0x34, 0x2c, 0x20, 0x30, 0x2e, 0x34, 0x35, 0x34, 0x35, 0x34, 0x35, 0x34, 0x29, 0x29, 0x3b, // 54, 0.4545454));
        0x0a, 0x20, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x2e, 0x67, 0x6c, 0x5f, 0x46, 0x72, 0x61, // .  _mtl_o.gl_Fra
        0x67, 0x43, 0x6f, 0x6c, 0x6f, 0x72, 0x20, 0x3d, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // gColor = tmpvar_
        0x32, 0x3b, 0x0a, 0x20, 0x20, 0x72, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x20, 0x5f, 0x6d, 0x74, 0x6c, // 2;.  return _mtl
        0x5f, 0x6f, 0x3b, 0x0a, 0x7d, 0x0a, 0x0a, 0x00,                                                 // _o;.}...
    };

    /*
        from: vs_metaballs_bin.h
     */
    private static final char[] vs_metaballs_glsl = {
        0x56, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x02, 0x00, 0x07, 0x75, 0x5f, 0x6d, 0x6f, 0x64, // VSH..,.?...u_mod
        0x65, 0x6c, 0x04, 0x20, 0x00, 0x00, 0x20, 0x00, 0x0f, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, // el. .. ..u_model
        0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x04, 0x01, 0x00, 0x00, 0x01, 0x00, 0xe6, 0x01, // ViewProj........
        0x00, 0x00, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x20, 0x68, 0x69, 0x67, 0x68, // ..attribute high
        0x70, 0x20, 0x76, 0x65, 0x63, 0x34, 0x20, 0x61, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x3b, // p vec4 a_color0;
        0x0a, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, // .attribute highp
        0x20, 0x76, 0x65, 0x63, 0x33, 0x20, 0x61, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x3b, 0x0a, //  vec3 a_normal;.
        0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, // attribute highp
        0x76, 0x65, 0x63, 0x33, 0x20, 0x61, 0x5f, 0x70, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x3b, // vec3 a_position;
        0x0a, 0x76, 0x61, 0x72, 0x79, 0x69, 0x6e, 0x67, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, // .varying highp v
        0x65, 0x63, 0x34, 0x20, 0x76, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x3b, 0x0a, 0x76, 0x61, // ec4 v_color0;.va
        0x72, 0x79, 0x69, 0x6e, 0x67, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, 0x65, 0x63, 0x33, // rying highp vec3
        0x20, 0x76, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x3b, 0x0a, 0x75, 0x6e, 0x69, 0x66, 0x6f, //  v_normal;.unifo
        0x72, 0x6d, 0x20, 0x6d, 0x61, 0x74, 0x34, 0x20, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x5b, // rm mat4 u_model[
        0x33, 0x32, 0x5d, 0x3b, 0x0a, 0x75, 0x6e, 0x69, 0x66, 0x6f, 0x72, 0x6d, 0x20, 0x68, 0x69, 0x67, // 32];.uniform hig
        0x68, 0x70, 0x20, 0x6d, 0x61, 0x74, 0x34, 0x20, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x56, // hp mat4 u_modelV
        0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x3b, 0x0a, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x6d, 0x61, // iewProj;.void ma
        0x69, 0x6e, 0x20, 0x28, 0x29, 0x0a, 0x7b, 0x0a, 0x20, 0x20, 0x68, 0x69, 0x67, 0x68, 0x70, 0x20, // in ().{.  highp
        0x76, 0x65, 0x63, 0x34, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x3b, 0x0a, 0x20, // vec4 tmpvar_1;.
        0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x77, 0x20, 0x3d, 0x20, 0x31, 0x2e, //  tmpvar_1.w = 1.
        0x30, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x78, 0x79, // 0;.  tmpvar_1.xy
        0x7a, 0x20, 0x3d, 0x20, 0x61, 0x5f, 0x70, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x3b, 0x0a, // z = a_position;.
        0x20, 0x20, 0x67, 0x6c, 0x5f, 0x50, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x3d, 0x20, //   gl_Position =
        0x28, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, // (u_modelViewProj
        0x20, 0x2a, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x29, 0x3b, 0x0a, 0x20, 0x20, //  * tmpvar_1);.
        0x68, 0x69, 0x67, 0x68, 0x70, 0x20, 0x76, 0x65, 0x63, 0x34, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, // highp vec4 tmpva
        0x72, 0x5f, 0x32, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x2e, // r_2;.  tmpvar_2.
        0x77, 0x20, 0x3d, 0x20, 0x30, 0x2e, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, // w = 0.0;.  tmpva
        0x72, 0x5f, 0x32, 0x2e, 0x78, 0x79, 0x7a, 0x20, 0x3d, 0x20, 0x61, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, // r_2.xyz = a_norm
        0x61, 0x6c, 0x3b, 0x0a, 0x20, 0x20, 0x76, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x20, 0x3d, // al;.  v_normal =
        0x20, 0x28, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x5b, 0x30, 0x5d, 0x20, 0x2a, 0x20, 0x74, //  (u_model[0] * t
        0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x29, 0x2e, 0x78, 0x79, 0x7a, 0x3b, 0x0a, 0x20, 0x20, // mpvar_2).xyz;.
        0x76, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x20, 0x3d, 0x20, 0x61, 0x5f, 0x63, 0x6f, 0x6c, // v_color0 = a_col
        0x6f, 0x72, 0x30, 0x3b, 0x0a, 0x7d, 0x0a, 0x0a, 0x00,                                           // or0;.}...
    };

    private static final char[] vs_metaballs_dx9 = {
        0x56, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x02, 0x00, 0x07, 0x75, 0x5f, 0x6d, 0x6f, 0x64, // VSH..,.?...u_mod
        0x65, 0x6c, 0x04, 0x20, 0x04, 0x00, 0x03, 0x00, 0x0f, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, // el. .....u_model
        0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x04, 0x01, 0x00, 0x00, 0x04, 0x00, 0x90, 0x01, // ViewProj........
        0x00, 0x00, 0x00, 0x03, 0xfe, 0xff, 0xfe, 0xff, 0x2c, 0x00, 0x43, 0x54, 0x41, 0x42, 0x1c, 0x00, // ........,.CTAB..
        0x00, 0x00, 0x83, 0x00, 0x00, 0x00, 0x00, 0x03, 0xfe, 0xff, 0x02, 0x00, 0x00, 0x00, 0x1c, 0x00, // ................
        0x00, 0x00, 0x00, 0x91, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00, 0x44, 0x00, 0x00, 0x00, 0x02, 0x00, // ......|...D.....
        0x04, 0x00, 0x03, 0x00, 0x00, 0x00, 0x4c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5c, 0x00, // ......L.........
        0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00, // ..........l.....
        0x00, 0x00, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x00, 0x03, 0x00, 0x03, 0x00, 0x04, 0x00, // ..u_model.......
        0x04, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, // .. .......u_mode
        0x6c, 0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x00, 0x03, 0x00, 0x03, 0x00, 0x04, 0x00, // lViewProj.......
        0x04, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0x73, 0x5f, 0x33, 0x5f, 0x30, // ..........vs_3_0
        0x00, 0x4d, 0x69, 0x63, 0x72, 0x6f, 0x73, 0x6f, 0x66, 0x74, 0x20, 0x28, 0x52, 0x29, 0x20, 0x48, // .Microsoft (R) H
        0x4c, 0x53, 0x4c, 0x20, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x20, 0x43, 0x6f, 0x6d, 0x70, 0x69, // LSL Shader Compi
        0x6c, 0x65, 0x72, 0x20, 0x31, 0x30, 0x2e, 0x31, 0x00, 0xab, 0x1f, 0x00, 0x00, 0x02, 0x0a, 0x00, // ler 10.1........
        0x00, 0x80, 0x00, 0x00, 0x0f, 0x90, 0x1f, 0x00, 0x00, 0x02, 0x03, 0x00, 0x00, 0x80, 0x01, 0x00, // ................
        0x0f, 0x90, 0x1f, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x0f, 0x90, 0x1f, 0x00, // ................
        0x00, 0x02, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x0f, 0xe0, 0x1f, 0x00, 0x00, 0x02, 0x0a, 0x00, // ................
        0x00, 0x80, 0x01, 0x00, 0x0f, 0xe0, 0x1f, 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x80, 0x02, 0x00, // ................
        0x07, 0xe0, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x0f, 0x80, 0x01, 0x00, 0xe4, 0xa0, 0x02, 0x00, // ................
        0x55, 0x90, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x0f, 0x80, 0x00, 0x00, 0xe4, 0xa0, 0x02, 0x00, // U...............
        0x00, 0x90, 0x00, 0x00, 0xe4, 0x80, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x0f, 0x80, 0x02, 0x00, // ................
        0xe4, 0xa0, 0x02, 0x00, 0xaa, 0x90, 0x00, 0x00, 0xe4, 0x80, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, // ................
        0x0f, 0xe0, 0x00, 0x00, 0xe4, 0x80, 0x03, 0x00, 0xe4, 0xa0, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, // ................
        0x07, 0x80, 0x05, 0x00, 0xe4, 0xa0, 0x01, 0x00, 0x55, 0x90, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, // ........U.......
        0x07, 0x80, 0x04, 0x00, 0xe4, 0xa0, 0x01, 0x00, 0x00, 0x90, 0x00, 0x00, 0xe4, 0x80, 0x04, 0x00, // ................
        0x00, 0x04, 0x02, 0x00, 0x07, 0xe0, 0x06, 0x00, 0xe4, 0xa0, 0x01, 0x00, 0xaa, 0x90, 0x00, 0x00, // ................
        0xe4, 0x80, 0x01, 0x00, 0x00, 0x02, 0x01, 0x00, 0x0f, 0xe0, 0x00, 0x00, 0xe4, 0x90, 0xff, 0xff, // ................
        0x00, 0x00, 0x00,                                                                               // ...
    };

    private static final char[] vs_metaballs_dx11 = {
        0x56, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x02, 0x00, 0x07, 0x75, 0x5f, 0x6d, 0x6f, 0x64, // VSH..,.?...u_mod
        0x65, 0x6c, 0x04, 0x20, 0x00, 0x00, 0x80, 0x00, 0x0f, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, // el. .....u_model
        0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x04, 0x00, 0x00, 0x08, 0x04, 0x00, 0x9c, 0x02, // ViewProj........
        0x00, 0x00, 0x44, 0x58, 0x42, 0x43, 0xc6, 0x4d, 0x04, 0x38, 0x93, 0x20, 0x89, 0x1c, 0xbe, 0x68, // ..DXBC.M.8. ...h
        0xbc, 0xd4, 0xee, 0x2f, 0x8a, 0xe9, 0x01, 0x00, 0x00, 0x00, 0x9c, 0x02, 0x00, 0x00, 0x03, 0x00, // .../............
        0x00, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x9c, 0x00, 0x00, 0x00, 0x10, 0x01, 0x00, 0x00, 0x49, 0x53, // ..,...........IS
        0x47, 0x4e, 0x68, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x50, 0x00, // GNh...........P.
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // ................
        0x00, 0x00, 0x0f, 0x0f, 0x00, 0x00, 0x56, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ......V.........
        0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x07, 0x07, 0x00, 0x00, 0x5d, 0x00, // ..............].
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x02, 0x00, // ................
        0x00, 0x00, 0x07, 0x07, 0x00, 0x00, 0x43, 0x4f, 0x4c, 0x4f, 0x52, 0x00, 0x4e, 0x4f, 0x52, 0x4d, // ......COLOR.NORM
        0x41, 0x4c, 0x00, 0x50, 0x4f, 0x53, 0x49, 0x54, 0x49, 0x4f, 0x4e, 0x00, 0xab, 0xab, 0x4f, 0x53, // AL.POSITION...OS
        0x47, 0x4e, 0x6c, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x50, 0x00, // GNl...........P.
        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, // ................
        0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ................
        0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x62, 0x00, // ..............b.
        0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x02, 0x00, // ................
        0x00, 0x00, 0x07, 0x08, 0x00, 0x00, 0x53, 0x56, 0x5f, 0x50, 0x4f, 0x53, 0x49, 0x54, 0x49, 0x4f, // ......SV_POSITIO
        0x4e, 0x00, 0x43, 0x4f, 0x4c, 0x4f, 0x52, 0x00, 0x54, 0x45, 0x58, 0x43, 0x4f, 0x4f, 0x52, 0x44, // N.COLOR.TEXCOORD
        0x00, 0xab, 0x53, 0x48, 0x44, 0x52, 0x84, 0x01, 0x00, 0x00, 0x40, 0x00, 0x01, 0x00, 0x61, 0x00, // ..SHDR....@...a.
        0x00, 0x00, 0x59, 0x00, 0x00, 0x04, 0x46, 0x8e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x84, 0x00, // ..Y...F. .......
        0x00, 0x00, 0x5f, 0x00, 0x00, 0x03, 0xf2, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5f, 0x00, // .._..........._.
        0x00, 0x03, 0x72, 0x10, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x5f, 0x00, 0x00, 0x03, 0x72, 0x10, // ..r......._...r.
        0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x67, 0x00, 0x00, 0x04, 0xf2, 0x20, 0x10, 0x00, 0x00, 0x00, // ......g.... ....
        0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x65, 0x00, 0x00, 0x03, 0xf2, 0x20, 0x10, 0x00, 0x01, 0x00, // ......e.... ....
        0x00, 0x00, 0x65, 0x00, 0x00, 0x03, 0x72, 0x20, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x68, 0x00, // ..e...r ......h.
        0x00, 0x02, 0x01, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x08, 0xf2, 0x00, 0x10, 0x00, 0x00, 0x00, // ......8.........
        0x00, 0x00, 0x56, 0x15, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x46, 0x8e, 0x20, 0x00, 0x00, 0x00, // ..V.......F. ...
        0x00, 0x00, 0x81, 0x00, 0x00, 0x00, 0x32, 0x00, 0x00, 0x0a, 0xf2, 0x00, 0x10, 0x00, 0x00, 0x00, // ......2.........
        0x00, 0x00, 0x46, 0x8e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x06, 0x10, // ..F. ...........
        0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x46, 0x0e, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x32, 0x00, // ......F.......2.
        0x00, 0x0a, 0xf2, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x8e, 0x20, 0x00, 0x00, 0x00, // ..........F. ...
        0x00, 0x00, 0x82, 0x00, 0x00, 0x00, 0xa6, 0x1a, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x46, 0x0e, // ..............F.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0xf2, 0x20, 0x10, 0x00, 0x00, 0x00, // ........... ....
        0x00, 0x00, 0x46, 0x0e, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x8e, 0x20, 0x00, 0x00, 0x00, // ..F.......F. ...
        0x00, 0x00, 0x83, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x05, 0xf2, 0x20, 0x10, 0x00, 0x01, 0x00, // ......6.... ....
        0x00, 0x00, 0x46, 0x1e, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x08, 0x72, 0x00, // ..F.......8...r.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x56, 0x15, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x46, 0x82, // ......V.......F.
        0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x32, 0x00, 0x00, 0x0a, 0x72, 0x00, //  .........2...r.
        0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46, 0x82, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ......F. .......
        0x00, 0x00, 0x06, 0x10, 0x10, 0x00, 0x01, 0x00, 0x00, 0x00, 0x46, 0x02, 0x10, 0x00, 0x00, 0x00, // ..........F.....
        0x00, 0x00, 0x32, 0x00, 0x00, 0x0a, 0x72, 0x20, 0x10, 0x00, 0x02, 0x00, 0x00, 0x00, 0x46, 0x82, // ..2...r ......F.
        0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0xa6, 0x1a, 0x10, 0x00, 0x01, 0x00, //  ...............
        0x00, 0x00, 0x46, 0x02, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x01, 0x00, 0x03, // ..F.......>.....
        0x05, 0x00, 0x02, 0x00, 0x01, 0x00, 0x40, 0x08,                                                 // ......@.
    };

    private static final char[] vs_metaballs_mtl = {
        0x56, 0x53, 0x48, 0x05, 0x03, 0x2c, 0xf5, 0x3f, 0x02, 0x00, 0x07, 0x75, 0x5f, 0x6d, 0x6f, 0x64, // VSH..,.?...u_mod
        0x65, 0x6c, 0x04, 0x20, 0x00, 0x00, 0x20, 0x00, 0x0f, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, // el. .. ..u_model
        0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x04, 0x01, 0x00, 0x00, 0x01, 0x00, 0x50, 0x03, // ViewProj......P.
        0x00, 0x00, 0x75, 0x73, 0x69, 0x6e, 0x67, 0x20, 0x6e, 0x61, 0x6d, 0x65, 0x73, 0x70, 0x61, 0x63, // ..using namespac
        0x65, 0x20, 0x6d, 0x65, 0x74, 0x61, 0x6c, 0x3b, 0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x20, // e metal;.struct
        0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x49, 0x6e, 0x70, // xlatMtlShaderInp
        0x75, 0x74, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x61, 0x5f, // ut {.  float4 a_
        0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x20, 0x5b, 0x5b, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, // color0 [[attribu
        0x74, 0x65, 0x28, 0x30, 0x29, 0x5d, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, // te(0)]];.  float
        0x33, 0x20, 0x61, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x20, 0x5b, 0x5b, 0x61, 0x74, 0x74, // 3 a_normal [[att
        0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x28, 0x31, 0x29, 0x5d, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x66, // ribute(1)]];.  f
        0x6c, 0x6f, 0x61, 0x74, 0x33, 0x20, 0x61, 0x5f, 0x70, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, // loat3 a_position
        0x20, 0x5b, 0x5b, 0x61, 0x74, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x65, 0x28, 0x32, 0x29, 0x5d, //  [[attribute(2)]
        0x5d, 0x3b, 0x0a, 0x7d, 0x3b, 0x0a, 0x73, 0x74, 0x72, 0x75, 0x63, 0x74, 0x20, 0x78, 0x6c, 0x61, // ];.};.struct xla
        0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, // tMtlShaderOutput
        0x20, 0x7b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x67, 0x6c, 0x5f, 0x50, //  {.  float4 gl_P
        0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x5b, 0x5b, 0x70, 0x6f, 0x73, 0x69, 0x74, 0x69, // osition [[positi
        0x6f, 0x6e, 0x5d, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x76, // on]];.  float4 v
        0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, // _color0;.  float
        0x33, 0x20, 0x76, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x3b, 0x0a, 0x7d, 0x3b, 0x0a, 0x73, // 3 v_normal;.};.s
        0x74, 0x72, 0x75, 0x63, 0x74, 0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, // truct xlatMtlSha
        0x64, 0x65, 0x72, 0x55, 0x6e, 0x69, 0x66, 0x6f, 0x72, 0x6d, 0x20, 0x7b, 0x0a, 0x20, 0x20, 0x66, // derUniform {.  f
        0x6c, 0x6f, 0x61, 0x74, 0x34, 0x78, 0x34, 0x20, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x5b, // loat4x4 u_model[
        0x33, 0x32, 0x5d, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x78, 0x34, 0x20, // 32];.  float4x4
        0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x56, 0x69, 0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x3b, // u_modelViewProj;
        0x0a, 0x7d, 0x3b, 0x0a, 0x76, 0x65, 0x72, 0x74, 0x65, 0x78, 0x20, 0x78, 0x6c, 0x61, 0x74, 0x4d, // .};.vertex xlatM
        0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, 0x20, 0x78, // tlShaderOutput x
        0x6c, 0x61, 0x74, 0x4d, 0x74, 0x6c, 0x4d, 0x61, 0x69, 0x6e, 0x20, 0x28, 0x78, 0x6c, 0x61, 0x74, // latMtlMain (xlat
        0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x49, 0x6e, 0x70, 0x75, 0x74, 0x20, 0x5f, // MtlShaderInput _
        0x6d, 0x74, 0x6c, 0x5f, 0x69, 0x20, 0x5b, 0x5b, 0x73, 0x74, 0x61, 0x67, 0x65, 0x5f, 0x69, 0x6e, // mtl_i [[stage_in
        0x5d, 0x5d, 0x2c, 0x20, 0x63, 0x6f, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x74, 0x20, 0x78, 0x6c, 0x61, // ]], constant xla
        0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x55, 0x6e, 0x69, 0x66, 0x6f, 0x72, // tMtlShaderUnifor
        0x6d, 0x26, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x75, 0x20, 0x5b, 0x5b, 0x62, 0x75, 0x66, 0x66, // m& _mtl_u [[buff
        0x65, 0x72, 0x28, 0x30, 0x29, 0x5d, 0x5d, 0x29, 0x0a, 0x7b, 0x0a, 0x20, 0x20, 0x78, 0x6c, 0x61, // er(0)]]).{.  xla
        0x74, 0x4d, 0x74, 0x6c, 0x53, 0x68, 0x61, 0x64, 0x65, 0x72, 0x4f, 0x75, 0x74, 0x70, 0x75, 0x74, // tMtlShaderOutput
        0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, //  _mtl_o;.  float
        0x34, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x20, 0x3d, 0x20, 0x30, 0x3b, 0x0a, // 4 tmpvar_1 = 0;.
        0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x77, 0x20, 0x3d, 0x20, 0x31, //   tmpvar_1.w = 1
        0x2e, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x31, 0x2e, 0x78, // .0;.  tmpvar_1.x
        0x79, 0x7a, 0x20, 0x3d, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x69, 0x2e, 0x61, 0x5f, 0x70, 0x6f, // yz = _mtl_i.a_po
        0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x3b, 0x0a, 0x20, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, // sition;.  _mtl_o
        0x2e, 0x67, 0x6c, 0x5f, 0x50, 0x6f, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x3d, 0x20, 0x28, // .gl_Position = (
        0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x75, 0x2e, 0x75, 0x5f, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x56, 0x69, // _mtl_u.u_modelVi
        0x65, 0x77, 0x50, 0x72, 0x6f, 0x6a, 0x20, 0x2a, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, // ewProj * tmpvar_
        0x31, 0x29, 0x3b, 0x0a, 0x20, 0x20, 0x66, 0x6c, 0x6f, 0x61, 0x74, 0x34, 0x20, 0x74, 0x6d, 0x70, // 1);.  float4 tmp
        0x76, 0x61, 0x72, 0x5f, 0x32, 0x20, 0x3d, 0x20, 0x30, 0x3b, 0x0a, 0x20, 0x20, 0x74, 0x6d, 0x70, // var_2 = 0;.  tmp
        0x76, 0x61, 0x72, 0x5f, 0x32, 0x2e, 0x77, 0x20, 0x3d, 0x20, 0x30, 0x2e, 0x30, 0x3b, 0x0a, 0x20, // var_2.w = 0.0;.
        0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, 0x5f, 0x32, 0x2e, 0x78, 0x79, 0x7a, 0x20, 0x3d, 0x20, //  tmpvar_2.xyz =
        0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x69, 0x2e, 0x61, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, 0x61, 0x6c, 0x3b, // _mtl_i.a_normal;
        0x0a, 0x20, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x2e, 0x76, 0x5f, 0x6e, 0x6f, 0x72, 0x6d, // .  _mtl_o.v_norm
        0x61, 0x6c, 0x20, 0x3d, 0x20, 0x28, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x75, 0x2e, 0x75, 0x5f, 0x6d, // al = (_mtl_u.u_m
        0x6f, 0x64, 0x65, 0x6c, 0x5b, 0x30, 0x5d, 0x20, 0x2a, 0x20, 0x74, 0x6d, 0x70, 0x76, 0x61, 0x72, // odel[0] * tmpvar
        0x5f, 0x32, 0x29, 0x2e, 0x78, 0x79, 0x7a, 0x3b, 0x0a, 0x20, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, // _2).xyz;.  _mtl_
        0x6f, 0x2e, 0x76, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x20, 0x3d, 0x20, 0x5f, 0x6d, 0x74, // o.v_color0 = _mt
        0x6c, 0x5f, 0x69, 0x2e, 0x61, 0x5f, 0x63, 0x6f, 0x6c, 0x6f, 0x72, 0x30, 0x3b, 0x0a, 0x20, 0x20, // l_i.a_color0;.
        0x72, 0x65, 0x74, 0x75, 0x72, 0x6e, 0x20, 0x5f, 0x6d, 0x74, 0x6c, 0x5f, 0x6f, 0x3b, 0x0a, 0x7d, // return _mtl_o;.}
        0x0a, 0x0a, 0x00,                                                                               // ...
    };

}
