[SCdF]

Thanks for your reply.

> We are testing the rendering engine, lighting, shaders, etc. in a visual test framework we created ourselves that compares each run of the tests with the previous and uses SSIM to output a comparison metric

So would this be something like rendering a frame of a test scene (utah teapot? real in-game scene?) in various states of rendering (with / without lighting, with / without specular / normals etc), and then making sure they look the same each time?

> Before joining Rare, I really wasn't aware of any testing whatsoever in the video games industry. It's been an eye opener and I wouldn't do it any other way.

You should definitely consider a GDC/etc talk, I imagine it would be an eye opener for a lot of people.

[speps]

> So would this be something like rendering a frame of a test scene (utah teapot? real in-game scene?) in various states of rendering (with / without lighting, with / without specular / normals etc), and then making sure they look the same each time?

Yes, exactly, it's small test scenes we setup ourselves whenever we add a new rendering feature or fix a rendering bug. Some of them are still not deterministic as we're using Compute Shaders for some stuff which is hard to make deterministic.

> You should definitely consider a GDC/etc talk, I imagine it would be an eye opener for a lot of people.

We are currently looking for topics. We'll see what comes out of that discussion internally :)