I'm having trouble with drawing a .png file. The image is a blurred red circle with transparency. However, the transparency only paints in black. Here's a very simple version of my program that illustrates the problem:
PGraphics pg; PImage blob = new PImage(100, 100, ARGB);
Yes, it works when clearing the background. However, I need it to accumulate so that the user can "draw" on the applet. If you copy the code that I posted above, it works for you? If so, what program are you using to create your image? I'm using Photoshop, and I've tried a couple different formats, but they all give me the same results. When I open the blob.png in Preview, it shows the transparency working correctly.