Terms of use

Last changed 10 October 2026.

These terms cover Ray Kiln (raykiln.dev and the Ray Kiln app), run by Pablo Miranda. Reading the site needs no account and these terms ask nothing of you for it. They matter once you make an account or share a shader.

Your account

Accounts are free and for people 13 or older. You sign in with a code sent to your email address; keep your email account safe, since it is the key to this one. You can download what is stored about you, and delete your account, from your account page at any time.

What you share

A shared shader is its source code, the recording the app makes of it, a title and a description, shown with your handle. You keep the rights you have in it. By sharing it you allow Ray Kiln to store it, show it, play its recording and offer its source on the site and in the app, and to make the small copies that takes (such as thumbnails and cached copies). Public and unlisted shaders can be seen by anyone with the link; private ones only by you.

Each shader shows the licence you chose: CC BY-NC-SA 4.0 unless you pick another (CC BY 4.0, MIT, or all rights reserved). That licence is what lets others reuse your code, and on what terms. A shader marked all rights reserved can be read, but not opened as a fork in the app.

Only share what you have the right to share. If your shader builds on someone else's, say so and follow their licence.

Forks of the episodes

The episodes' code and videos belong to Ray Kiln and are all rights reserved, with one permission: you may use, change and share shaders that start from episode code, in Ray Kiln and in your own work, commercial or not, as long as you credit Ray Kiln (a line such as “Based on Ray Kiln, episode 6” with a link to the episode). You may not republish the episodes themselves, or collect them, as they are.

What isn't allowed

• Shaders or text that are hateful, sexual, violent towards real people, or illegal.
• Code copied from someone else against its licence, or passed off as your own.
• Spam, advertising, or anything meant to mislead.
• Shaders built to hang or harm a computer, or attempts to break, overload or get around how the site works.

Shaders can be reported from their page. A shader with several reports is hidden until it is looked at. Ray Kiln may hide or remove anything that breaks these terms, and close accounts that keep doing so.

Running someone's shader

The site only plays recordings: it never runs a shader in your browser. The app runs a shader only when you press Run, after showing you its code. A shader is a program; a badly written one can make your Mac's graphics slow for a moment. Run code you have read.

No guarantees

Ray Kiln is offered as it is. It may change, pause or stop, and while care is taken, it is not guaranteed to be free of mistakes or always available. As far as the law allows, Ray Kiln is not liable for losses from using it.

Changes and contact

If these terms change in a way that matters, the change is shown here with its date. To ask about them, or to ask for something to be taken down, use support@pablin.me.