Autumn Ashton

“the backpack height very slightly on Steam Frame just to make it easier,”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton recalls that controller support only required minor changes such as adjusting the backpack height on Steam Frame.

“We discovered so many things in driver, so many things that we needed from the SteamVR side - that even if we didn't ship Half-Life: Alyx on Steam Frame, doing that one and a half years of work... it was completely worth it.”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton says the driver and SteamVR work discovered through porting Alyx was worth it even if the game itself had not shipped on Steam Frame.

“finding all these death by 1,000 cuts type things to go and find fixes for them - that was the main thing.”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton describes the port work as an audit of many small issues rather than a single architectural rewrite.

“We wouldn't have been able to do any of this without having open-source drivers, because we were iterating so quick,”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton credits open-source drivers as essential to the fast iteration that made 18 months of driver work possible.

“I don't think it would have been shippable without having eye tracking giving us the gaze information to feed into foveated rendering.”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton states that eye tracking for foveated rendering was essential to making the port shippable.

“You could have a problem, we'd see it in Alyx or any other game in the catalogue that we're helping third-party developers bring up, and we can have something testable within minutes potentially, instead of weeks or months away if you're working with a third-party vendor on drivers.”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton says open-source drivers enabled testable fixes within minutes rather than weeks or months.

“We're running at 36fps, but we're using depth reprojection,”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton says Alyx runs at 36fps on Steam Frame using depth reprojection.

“If we provide a depth texture from Alyx, or any other game provides a depth texture, we can incorporate that information into reprojection, so that even if you're doing this, we can be completely smooth. You wouldn't be able to tell.”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton explains how providing a depth texture allows reprojection to handle parallax between foreground and background smoothly.

“probably about a week of going through a lot of content and all the different resolution levels that we wanted to tune it for”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton says dialing in Alyx's fragment density map took about a week of hand-tuning across content and resolution levels.

“As you start to get more features and the stack working - foveated rendering, eye tracking, and the fact that the headset has 16 gigs of RAM - it made us think 'maybe, maybe we could get there with some work',”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton describes how new hardware features like foveated rendering and eye tracking made a native port seem possible.

“Half-Life: Alyx occasionally would break rendering to go do something else for a bit, then come back to it, and that has a much bigger cost on the Steam Frame than it would on a desktop,”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton explains how Alyx's rendering breaks cost more on the Steam Frame's tiler GPU than on a desktop immediate-mode renderer.

“Half-Life: Alyx was a really good forcing function for getting other parts of the stack into shape for us to ship the Steam Frame,”

Autumn Ashton · said date not stated · reported 2026-09-14

Ashton says Alyx served as a forcing function to get other parts of the software stack into shape for the Steam Frame launch.