you need a workaround???
i think bb load alpha-values from png, but don't use this for alphablending. Analyze your image after loading (readpixelfast). Create a alphapixel-table with x,y,rgb values and overwrite this pixels with masked color. After you use drawimage, draw all alpha-pixels from your table and you have fast antialiased high quality graphic
i think bb load alpha-values from png, but don't use this for alphablending. Analyze your image after loading (readpixelfast). Create a alphapixel-table with x,y,rgb values and overwrite this pixels with masked color. After you use drawimage, draw all alpha-pixels from your table and you have fast antialiased high quality graphic