I want to use brushes for a drawing effect, but I must be doing something wrong or missing some important part. I've created some custom brush patterns which need to be "merged" with a bitmap, so when I blit it to the screen, the pattern is not a seperate overlay but an actual part of the bitmap so if there is any other image underneath, it will be visible . I don't know if I'm making sense, so below is a visual example :P
I've tried some approaches using raster ops but the result always affects the …