Max Thomas shinyquagsire23

💭

Messing with Apple Vision

I do reverse engineering work, vulnerability research, hardware drivers, modding tools and VR tinkering. Currently @ NVIDIA

shinyquagsire23 / gist:2160f3a1361308aa3479730242f78a20

Created June 29, 2025 00:04

visionOS 26 maxRenderQuality=1.0 VRR map rates and estimated PPD

	Drawable compressed dims: 2496 x 2432
	Drawable decompressed dims: 6262 x 5020
	Drawable texture dims: 2528 x 2528
	VRR granularity: MTLSize(width: 32, height: 32, depth: 1)
	0 Cell amt: 78 x 76
	x 0 0.054792162 est PPD: 3.2858002
	x 1 0.070024125 est PPD: 4.199237
	x 2 0.086725116 est PPD: 5.2007694
	x 3 0.10491543 est PPD: 6.291614
	x 4 0.12499988 est PPD: 7.496047

shinyquagsire23 / _formats.swift

Last active July 5, 2025 16:00

Non-conclusive list of interesting private Metal pixel formats

	//
	// Non-conclusive list of interesting private Metal pixel formats
	//
	let MTLPixelFormatYCBCR8_420_2P: UInt = 500
	let MTLPixelFormatYCBCR8_422_1P: UInt = 501
	let MTLPixelFormatYCBCR8_422_2P: UInt = 502
	let MTLPixelFormatYCBCR8_444_2P: UInt = 503
	let MTLPixelFormatYCBCR10_444_1P: UInt = 504
	let MTLPixelFormatYCBCR10_420_2P: UInt = 505
	let MTLPixelFormatYCBCR10_422_2P: UInt = 506

shinyquagsire23 / DrawableWrapper.swift

Last active June 12, 2025 09:04

DrawableQueue/LowLevelTexture wrapper class for visionOS 2.0 beta

	// Open license, I don't care what you do with this.

	// idk how many of these are needed
	import SwiftUI
	import RealityKit
	import Metal
	import MetalKit
	import Spatial

	class DrawableWrapper {

shinyquagsire23 / gist:f88c52559e5fa24f1dff9328cf1ac93e

Created May 29, 2024 19:34

Mig Switch Dumper lsusb

	Bus 000 Device 009: ID 05e3:0751 Genesys Logic, Inc. microSD Card Reader
	Device Descriptor:
	bcdUSB 2.00
	bDeviceClass 0 UseInterfaceDescriptor
	bDeviceSubClass 0
	bDeviceProtocol 0
	bMaxPacketSize0 64
	idVendor 0x05e3 Genesys Logic, Inc.
	idProduct 0x0751 microSD Card Reader
	bcdDevice e.04

shinyquagsire23 / FPGBC_update.py

Last active January 30, 2024 01:48

FPGBC updater script for macOS (and maybe Linux) using Python

	# pip3 install pyusb
	# Requires root on macOS to kick the kernel driver off the device.

	import usb.core
	import usb.util
	import struct
	import time
	import base64
	import sys

shinyquagsire23 / gist:e431887f755df2e23851e62270896b11

Last active December 22, 2023 07:29

VIVE ultimate trackers lsusb -v

	Bus 001 Device 007: ID 0bb4:0350 HTC (High Tech Computer Corp.) VIVE Wireless Dongle
	Device Descriptor:
	bcdUSB 2.00
	bDeviceClass 0 UseInterfaceDescriptor
	bDeviceSubClass 0
	bDeviceProtocol 0
	bMaxPacketSize0 64
	idVendor 0x0bb4 HTC (High Tech Computer Corp.)
	idProduct 0x0350
	bcdDevice 1.00

shinyquagsire23 / recover_drive.py

Created October 12, 2023 16:12

Directly talking SCSI with a USB mass storage devices on Linux, to (attempt to) recover raw NAND data from a drive which lost configuration

	import usb.core
	import usb.util
	import struct
	import time
	import os

	# echo 1-1:1.0 > /sys/bus/usb/drivers/usb-storage/unbind

	os.system("/bin/bash -c \"echo 1-1:1.0 > /sys/bus/usb/drivers/usb-storage/unbind\"")

shinyquagsire23 / gist:ab6f7c0f9b6514b6b54d69b9a57646be

Created July 26, 2023 20:24

Enabling USB device mode on Intel devices (Tweet archive)

	https://twitter.com/ShinyQuagsire/status/1536432635643211777 12:37 PM · Jun 13, 2022
	-----
	I figured out how to enable USB device mode on my XPS 13 (9350) 🎉

	Though for some ungodly reason, it uses the right-side full USB port. So a crossover cable is required.
	-----


	https://twitter.com/ShinyQuagsire/status/1536434057671716864 12:43 PM · Jun 13, 2022
	-----

shinyquagsire23 / fixup.sh

Created July 18, 2023 02:20

Fixup iOS apps to run on visionOS sim

	#!/bin/zsh
	PWD=$(pwd)

	app_path=$1
	app_basename="${app_path%.*}"

	if [ "$#" -ne 1 ]; then
	echo "Usage: ./fixup.sh YourApp.app"
	exit -1
	fi

shinyquagsire23 / slc_unwrap.py

Created April 26, 2023 19:17

Convert Wii(U) NANDs with ECC to NAND images w/o ECC.