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Graphics Sequencer (XSISDK)

Documentation

Be sure to read: Graphics Sequencer (http://softimage.wiki.avid.com/sdkdocs/cus_graphicsequencer.htm)

The graphic sequencer states are documented in the "Communicating with XSI" section of Realtime Shaders (http://softimage.wiki.avid.com/sdkdocs/cus_rtshad.htm)

Graphic Sequencer Callbacks

The following diagram shows how the display callbacks fit into the viewport rendering loop.

Callback	Viewport Rendering Loop
Pre-begin Frame	Set up p-buffer
Begin Frame	Clear call (clear back buffer, Z-buffer, ...)
Post-begin Frame
Pre-Pass
Begin Pass	Draw wireframe. This is where you would call: CGraphicSequencer::RenderSceneUsingMode() CGraphicSequencer::RenderSceneUsingMaterial() CGraphicSequencer::RenderListUsingMode() CGraphicSequencer::RenderListUsingMaterial()
Post-Pass
Pre-end Frame	Draw rulers/grid and save Frame buffer
End Frame	Swap buffer
Post-end Frame

Notes

• The display callbacks are called for each viewport.
• The calling order for Begin Frame and End Frame callbacks are not guaranteed. For example, you cannot assume your Begin Frame callback is called before the buffers are cleared.
• There is one pass only.