zachlewis

I stumbled on a case where a user of https://pypi.org/project/OpenImageIO/'s wheels on Windows was reporting that they could not import the library in Nuke 14.1.

To debug the issue, I created an EC2 instance with a GPU using the NVidia WinServer 2022 AMI, installed Nuke and tried to import OpenImageIO. I was able to reproduce immediately.

Let's install OpenImageIO using Nuke's python interpreter:

& 'C:/Program Files/Nuke14.1v6/python.exe' -m pip install OpenImageIO==3.0.3.1 --prefix C:/Users/Administrator/asd

Inside Nuke's script editor:

This downloads standalone MSVC compiler, linker & other tools, also headers/libraries from Windows SDK into portable folder, without installing Visual Studio. Has bare minimum components - no UWP/Store/WindowsRT stuff, just files & tools for native desktop app development.

Run py.exe portable-msvc.py and it will download output into msvc folder. By default it will download latest available MSVC & Windows SDK - currently v14.40.33807 and v10.0.26100.0.

You can list available versions with py.exe portable-msvc.py --show-versions and then pass versions you want with --msvc-version and --sdk-version arguments.

To use cl.exe/link.exe first run setup_TARGET.bat - after that PATH/INCLUDE/LIB env variables will be updated to use all the tools as usual. You can also use clang-cl.exe with these includes & libraries.

To use clang-cl.exe without running setup.bat, pass extra /winsysroot msvc argument (msvc is folder name where output is stored).

Ikea Bekant standing desk with Gerton table top

	import os
	import tempfile

	from contextlib import contextmanager
	from dataclasses import dataclass

	import OpenImageIO as oiio
	import einops

	DTYPE_TO_OIIO = {

	# (c) Teigigutesiegel, 2021
	# used code from https://gist.github.com/sjdv1982/75899d10e6983b878f63083e3c47b39b, copyright (c) 2017 Sjoerd de Vries

	"""
	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	set cut_paste_input [stack 0]
	version 12.1 v1
	push $cut_paste_input
	Colorspace {
	illuminant_in ACES
	primary_in ACES
	bradford_matrix true
	name ACES_to_sRGB_Colorspace
	selected true
	xpos -193

	set cut_paste_input [stack 0]
	version 12.1 v1
	push $cut_paste_input
	Camera2 {
	translate {2 1.5 2}
	rotate {-30 45 0}
	focal 30
	name Camera
	selected true
	xpos -186

	import UIKit
	import MobileCoreServices.UTCoreTypes

	if #available(iOS 14.1, *) {
	let input = Bundle.main.url(forResource: "IMG_0037", withExtension: "HEIC")!
	let output = FileManager().temporaryDirectory.appendingPathComponent("IMG_0037.GAIN_MAP.BMP")
	let source = CGImageSourceCreateWithURL(input as CFURL, nil)!

	// urn:com:apple:photo:2020:aux:hdrgainmap
	let dataInfo = CGImageSourceCopyAuxiliaryDataInfoAtIndex(source, 0, kCGImageAuxiliaryDataTypeHDRGainMap)! as Dictionary