Playing with the gl objects in GEM (0.90) on OS X (Pd 0.38-4 Extended, via Hans) , ive noticed that GEMglClearColor has 5 inputs, one for the gem render chain, 2 - r, 3 - g, 4 - b and presumably 5 - alpha, yet, changing alpha results in no change in the window Changing the RGB values does, just like [color] to gemwin (as it should).

Presumably, changing the alpha would act to let the scene draw 'over' itself, and give an easy way to do trails/blurring. Jitter supports this feature (not griping.. just saying :), any chance , or workaround to get similar functionality, as I love the aesthetic of it. Id rather not use snap2pix/snap2tex.

Thanks,