2.2.8.4 MILCMD_DRAW_OCCLUSIONRECTANGLE
The MILCMD_DRAW_OCCLUSIONRECTANGLE packet instructs the compositor to treat the specified rectangle as if a part of the rendered scene was occluded by it. This allows the client to implement optimizations around minimizing the section of the scene graph that is traversed to compose the scene. The client MAY ignore this message.
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messageSize |
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controlCode |
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Rectangle (32 bytes) |
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messageSize (4 bytes): A 32-bit unsigned integer. The size of this message in bytes. The value of this field MUST be set to 0x00000028.
controlCode (4 bytes): A 32-bit unsigned integer containing the control code for this message. The value of this field MUST be equal to 0x0000006B.
Rectangle (32 bytes): A MilRect structure. The composition engine MAY assume that the part of the scene delimited by this rectangle is occluded and is not necessary to redraw.