enum wxAntialiasMode |
enum wxCompositionMode |
Compositing is done using Porter-Duff compositions (see http://keithp.com/~keithp/porterduff/p253-porter.pdf) with wxGraphicsContext::SetCompositionMode.
The description give a short equation on how the values of a resulting pixel are calculated. R = Result, S = Source, D = Destination, colors premultiplied with alpha Ra, Sa, Da their alpha components
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