Mir

Overview of all Mir keys:

<devicename>:
  MirAndroidPlatformClientEglFlush: <comma-separated-list/"all">
  MirAndroidPlatformClientFenceSync: <comma-separated-list/"all">
  MirAndroidPlatformServerBackpressure: <boolean>
  MirAndroidPlatformServerClearFbFence: <boolean>
  MirAndroidPlatformServerEglSync: <boolean>
  MirAndroidPlatformServerPartialUpdates: <boolean>

mir-platform-android

Nyckel	Beskrivning	Värde(n)	Default value
MirAndroidPlatformClientEglFlush	See below	Comma-separated list (or special value ”all”)	Tom
MirAndroidPlatformClientFenceSync	See below	Comma-separated list (or special value ”all”)	Tom
MirAndroidPlatformServerBackpressure	See below	Booleanskt	Falsk
MirAndroidPlatformServerClearFbFence	See below	Booleanskt	Falsk
MirAndroidPlatformServerEglSync	See below	Booleanskt	Launcher argument (default)
MirAndroidPlatformServerPartialUpdates	See below	Booleanskt	Falsk

MirAndroidPlatformClientEglFlush

Force GL command buffer flush on eglSwapBuffers, in case the driver doesn’t follow the spec.

MirAndroidPlatformClientFenceSync

Classic fence-only synchronization without GL command buffer flushing.

MirAndroidPlatformServerBackpressure

Allows redrawing to be skipped or not after a missed frame, similarly to SurfaceFlinger.

MirAndroidPlatformServerClearFbFence

Framebuffer changes only continue after the fence has been successfully waited on.

MirAndroidPlatformServerEglSync

Allow or avoid synchronization using EGL fencing primitives when drawing the screen.

Overrules existing launcher argument.

MirAndroidPlatformServerPartialUpdates

Allow partial redraws to HWC-assigned server-side buffers.

Exempel

Device sample using:

• Enabling egl flushing for every client except for lomiri and unity8

  • Note that you can use ! to invert conditions and turn the allow into a deny list.

• Disabling egl sync for the server

• Enabling partial updates for the server

Config file:

$ cat /etc/deviceinfo/devices/sample.yaml
sample:
  MirAndroidPlatformClientEglFlush:
    - "!/usr/bin/unity8,!/usr/bin/lomiri,all"
  MirAndroidPlatformServerEglSync:
    - false
  MirAndroidPlatformServerPartialUpdates:
    - true