RenderTextureRenderingStepTargetViewport Property

Gets or sets a part of the screen that will be affected by this PostProcess. The coordinates are defined in NDC space (Normalized Device Coordinates) that means that the full screen post process will be defined as (0, 0, 1, 1); upper left quarter is (0, 0, 0.5f, 0.5f). The default value is (0, 0, 1, 1).

public ViewportF TargetViewport { get; set; }