3D Graphics Programming with QuickDraw 3D 1.5.4
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Notice Method Selectors
The method parameter passed to the QAGetNoticeMethod and QASetNoticeMethod functions specifies a type of notice method. QuickDraw 3D RAVE defines these constants for method selectors.
typedef enum TQAMethodSelector {
kQAMethod_RenderCompletion = 0,
kQAMethod_DisplayModeChanged = 1
kQAMethod_ReloadTextures = 2,
kQAMethod_BufferInitialize = 3,
kQAMethod_BufferComposite = 4,
kQAMethod_NumSelectors = 5
} TQAMethodSelector;
Constant descriptions
- kQAMethod_RenderCompletion
- The renderer has finished rendering an image. If the draw context is double buffered, the completion method is called after the front and back buffers have been swapped.
- kQAMethod_DisplayModeChanged
- The display mode has changed. In response to this notification, you should verify that all your draw contexts are still visible on the screen.
- kQAMethod_ReloadTextures
- The texture memory has become invalid. In response to this notification, you should reload any textures you're using.
- kQAMethod_BufferInitialize
- A buffer needs to be initialized. This notification is sent before rendering starts. You are responsible for clearing the buffer to the desired image. Your buffer initialization method is given a reference to the device to clear, which is always a memory device. You can set a drawing engine's kQATag_BufferComposite state variable to indicate how you want the engine to composite generated pixels with the pixels in that image.
- kQAMethod_BufferComposite
- Rendering is finished and it is safe to composite. This notification is sent after rendering has finished but before the buffers are swapped. Your buffer compositing method is given a reference to the device to composite into, which is always a memory device.
- kQAMethod_NumSelectors
- The number of method selectors currently defined.
© 1997 Apple Computer, Inc.
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