Pixel exact collision brush to brush

[airsoftsoftwair]

Thank you for the hint, it does work, so i'm not forced to use an own collision-function which saves me a lot of work, thank you!

Btw, if you want to save memory for the software brushes you could also just store them as palette images instead of RGB images. This will reduce memory consumption by 75% because Hollywood only has to store width*height pixels instead of width*height*4 pixels.