The display pipeline calls events during specific phases of drawing During the drawing of a single frame the events are called in the following order.

[Begin Drawing of a Frame]

• CalculateBoundingBox
• CalculateClippingPanes
• SetupFrustum
• SetupLighting
• InitializeFrameBuffer
• DrawBackground
• If this is a layout and detail objects exist the channels are called in the same order for each detail object (drawn as a nested viewport)
• PreDrawObjects
• For Each Visible Non Highlighted Object
• PostDrawObjects - depth writing/testing on
• DrawForeGround - depth writing/testing off
• For Each Visible Highlighted Object
• PostProcessFrameBuffer (If a delegate exists that requires this)
• DrawOverlay (if Rhino is in a feedback mode)

[End of Drawing of a Frame]

NOTE: There may be multiple DrawObject calls for a single object. An example of when this could happen would be with a shaded sphere. The shaded mesh is first drawn and these channels would be processed; then at a later time the isocurves for the sphere would be drawn.

public sealed class DisplayPipeline

Public NotInheritable Class DisplayPipeline