Interface Renderer

public interface Renderer
Application supplied callback that drives the contents of a RenderView. The methods are always invoked on the platform render thread that owns the GPU context; never touch Codename One UI components directly from these callbacks. Use RenderView.requestRender() or RenderView.setContinuous(boolean) to schedule frames.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    onDispose(GraphicsDevice device)
    Invoked when the GPU context is being torn down (for example when the view is removed from the UI).
    void
    onFrame(GraphicsDevice device)
    Invoked once per frame to render the scene.
    void
    onInit(GraphicsDevice device)
    Invoked once after the GPU context and its GraphicsDevice have been created and are current.
    void
    onResize(GraphicsDevice device, int width, int height)
    Invoked when the drawable surface size changes, including once after initialization.

  • Method Details

    • onInit

      void onInit(GraphicsDevice device)

      Invoked once after the GPU context and its GraphicsDevice have been created and are current. Allocate buffers, textures and materials here.

      Parameters
      • device: the graphics device bound to this view

    • onResize

      void onResize(GraphicsDevice device, int width, int height)

      Invoked when the drawable surface size changes, including once after initialization. Reconfigure projection matrices and viewports here.

      Parameters

      • device: the graphics device bound to this view

      • width: the new drawable width in pixels

      • height: the new drawable height in pixels

    • onFrame

      void onFrame(GraphicsDevice device)

      Invoked once per frame to render the scene. Issue draw calls against the supplied device.

      Parameters
      • device: the graphics device bound to this view

    • onDispose

      void onDispose(GraphicsDevice device)

      Invoked when the GPU context is being torn down (for example when the view is removed from the UI). Release any resources that are not owned by the device. May be invoked with a null device when the context was lost.

      Parameters
      • device: the graphics device bound to this view, or null if the context was already lost