When using "copypixels" I always have to disable blending beforehand,
because otherwise the copied pixels are blending with the glclearcolor.
sketch.copypixels(Patterns, 0, 0);
Patterns can be another sketch instance or an Image. Same problem. Is this
expected behavior or a bug maybe? I know this isn't a proper bugreport so if
it's not something I'm missing I'll make an example script.
using winmax 4.5.7 jitter 1.5.2