Google is slowly working on deprecating/hiding OEM's GLES drivers, in favor of Vulkan, but we're still very far from that. Most of Android's rendering is still

Google is slowly working on deprecating/hiding OEM's GLES drivers, in favor of Vulkan, but we're still very far from that. Most of Android's rendering is still mostly GLES, using directly OEM's GLES driver. Since Android 10, apps can decide to use Angle for generic GLES over Vulkan, but that's opt-in. Also the Snapdragon 801 chip of the Fairphone 2 doesn't have (official) support for vulkan