Draw Region Interface

The draw region interface lets renderers access the QuickDraw 3D frame buffer and communicate information about the configuration and state of the drawing context. Renderers are required to use some portions of the draw region interface. Other portions may or may not be required, depending on the nature of the renderer, as specified below.

Because of the complexity inherent in dealing with frame buffers and other rendering targets, you are encouraged to examine the Apple Sample Renderer (SR) provided on the QD3D 1.5 Software Developers Kit (SDK). It helps explain the functionality described here and illustrates how to use it.

Obtaining a DrawRegion

Draw Region Validation

Draw Region Services

Starting and Ending Draw Regions

Draw Region Descriptor

Draw Region Location and Dimensions

Renderer-Private Data in Draw Regions

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© 1997 Apple Computer, Inc.

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