pixies - sprites with zero filtering

Use a second, static camera far away from the main scene and render it on top of the main camera. This way the main camera's zoom is irrelevant.

Something like this ....

GUIcamera = CreateCamera()
CameraClsMode GUIcamera,False,True
CameraRange GUIcamera, .1,5
PositionEntity GUIcamera, 10000,10000,10000
EntityOrder GUIcamera,-999

Then use GUIcamera instead of Camera in the pixie routines.

Stevie