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PMX (Polygon Model eXtended) 2.1

This is an English description of the .PMX file format used in Miku Miku Dance (MMD).

PMX is the successor to the .PMD format (Polygon Model Data).

This is work-in-progress! Please leave feedback in the comments.

Todo

Check it's working

DRI_PRIME=1 glxinfo | grep OpenGL

Unbind AMD GPU from Radeon driver

echo "1002 6719" > /sys/bus/pci/drivers/vfio-pci/new_id echo "0000:01:00.0" > /sys/bus/pci/devices/0000:01:00.0/driver/unbind echo "0000:01:00.0" > /sys/bus/pci/drivers/vfio-pci/bind echo "1002 6719" > /sys/bus/pci/drivers/vfio-pci/remove_id echo "1002 aa80" > /sys/bus/pci/drivers/vfio-pci/new_id echo "0000:01:00.1" > /sys/bus/pci/devices/0000:01:00.1/driver/unbind

The Digilent JTag uses FT2232, but its configuration EEPROM contains secrete data needed to be recoginzed by Xilinx ISE/Vivado. The following method only works on linux (tested on Ubuntu16.04), but the patched FT2232 doggle also works on Windows. Since WSL1 does not provide USB device access, the following method will not work for WSL1.

DONT use FT_Prog on offical Digilent cable, as it can trash the firmware! The offical eeprom contains secrete data that cannot be handled correctly by FT_Prog.

Here are steps to create a Digilent-like Jtag that can be used in Xilinx ISE and Vivado

Install softwares: sudo apt-get install libftdi1 ftdi-eeprom
Create a file "flash_digilent.conf" with the following content:

	# PMX 2.0 file format #

	This is a description of the PMX file format. This is used for 3D models in Miku Miku Dance (MMD).

	Since I couldn't find any English descriptions of the PMX file format, I've made this, which is translated from http://gulshan-i-raz.geo.jp/labs/2012/10/17/pmx-format1/. I haven't used this file format yet, so please don't ask me what everything means.
	An English guide to the PMD file format, which preceeded PMX, can be found here: http://mikumikudance.wikia.com/wiki/MMD:Polygon_Model_Data.

	If you want to learn more, there are some open source projects on GitHub which can read this format, so go take a look at them.

	Note: fields with type text begins with an int (32 bit) with how many bytes of text the section is.

	using UdonSharp;
	using UnityEngine;

	namespace TKMNY
	{
	[UdonBehaviourSyncMode(BehaviourSyncMode.NoVariableSync)]
	public sealed class LightMapHolder : UdonSharpBehaviour
	{
	[SerializeField] Texture[] lightmaps;

	<!doctype html>
	<html>
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="user-scalable=no" />
	<link rel="icon" href="././clock.svg" />
	<link rel="manifest" href="./manifest.json" />
	<title>SVG Clock</title>
	<style>
	html {height: 100%;}