Isn't it supposed to use Vulkan instead of OpenGL?

[dan06567]

Beta 2 

 I have not the screenshot, but in One UI 7 Beta 1, It was using Vulkan instead of OpenGL.

 

[ELIĚZER]

In my case when I was in Beta 1, It used Vulkan.

[Ariscott56]

You're right. Beta 1 did utilize the Vulkan API before it was changed back to OpenGL on beta 2.

[USBetaModerator3]

Hello,

Thanks for your observation!

Yes, Android 15 (and by extension, One UI 7) has broader support for Vulkan as a system-level graphics API, and in some cases, apps and UI elements may default to Vulkan where supported. However, rendering behavior can vary depending on the device, app compatibility, or performance tuning per build—especially in beta versions.

If you noticed Vulkan being used in Beta 1 and now see a fallback to OpenGL, this may have been a temporary change for stability or compatibility reasons during ongoing testing. The final implementation could vary depending on how things evolve across Beta rounds.

App-level rendering (like in games) may still use OpenGL unless explicitly optimized for Vulkan, and system-level rendering decisions may not be consistently exposed unless verified through developer tools or logs.

Feel free to share any app or system context you’re referring to, and we’ll pass it along to the relevant team!

Regards,
One UI Beta Team

[pawan67]

Please consider vulkan the battery backup was good in the beta 1