Calculate the number of blank lines above a ViewPort
Source position: agraphics.pas line 2434
function CalcIVG( |
V: PView; |
Cp: PViewPort |
):LongWord; |
the number of ViewPort resolution scan lines needed to execute all the copper instructions for ViewPort, or 0 if any error
To calculate the maximum number of blank lines above a viewport needed to load all the copper instructions, after accounting for the viewport bandwidth and size.
This function is unimplemented.