Constructor Detail

• DisplayHelper

  DisplayHelper(Context context)

  Creates a DisplayHelper which helps managing a Display.

  Parameters:

  context - a Context to used to retrieve the DisplayManager

• DisplayHelper

  DisplayHelper(Context context, Handler handler)

  Creates a DisplayHelper which helps manage a Display and provides a Handlerwhere callbacks can execute filament code.

  Parameters:

  context - a Context to used to retrieve teh DisplayManager

  handler - a Handler used to run callbacks accessing filament

Method Detail

• attach

   void attach(@NonNull() Renderer renderer, @NonNull() Display display)

  Sets the filament Renderer associated to the Display, from this pointon, Renderer.DisplayInfo will be automatically updated when the Display properties change.This is typically called from onNativeWindowChanged.

  Parameters:

  renderer - a filament Renderer instance

  display - a Display to be associated with the Renderer

• detach

   void detach()

  Disconnect the previously set Renderer from Display This is typically called from onDetachedFromSurface.

• getDisplay

   Display getDisplay()

  Returns the Display currently monitored

• getDisplayInfo

  @NonNull() static Renderer.DisplayInfo getDisplayInfo(@NonNull() Display display, @Nullable() Renderer.DisplayInfo info)

  Populate a Renderer.DisplayInfo with properties from the given Display

  Parameters:

  display - Display to get Renderer.DisplayInfo from

  info - an instance of Renderer.DisplayInfo or null

• getAppVsyncOffsetNanos

   static long getAppVsyncOffsetNanos(@NonNull() Display display)

• getPresentationDeadlineNanos

   static long getPresentationDeadlineNanos(@NonNull() Display display)

• getRefreshRate

   static float getRefreshRate(@NonNull() Display display)

• getRefreshPeriodNanos

   static long getRefreshPeriodNanos(@NonNull() Display display)

  Returns a Display's refresh period in nanoseconds

  Parameters:

  display - the Display to get the refresh period from