Surface.get_parent - subsurfaceのオリジナルSurfaceを取得します。 Pygame.Surface((width, height), flags=0, Surface): return Surface A very hard gotcha to track ((width, height), flags=0, depth=0, masks=None): return Surface I will make a completely empty mask, but if I do this: image = pygame.Surface((50,50)).convert() Ie, if I do this: image = pygame.Surface((50,50)).convert() If you try to make a mask from a surface that does not use alpha transparency, the topleft pixel will be used as the off state by default. Img = pg.image.load(os.path.join(directory,pic))Īnother issue occurs when it comes to making masks from surfaces (an issue you haven't met yet). If no alpha transparency is detected image will beĬonverted using convert() and colorkey will be set to colorkey.''' Transparency is found in the image the image will be converted usingĬonvert_alpha(). '''Load all graphics with extensions in the accept argument. Here is a script that will load all images from a directory and correctly convert and key them and place them in a dictionary: def load_all_gfx(directory,colorkey=(255,0,255),accept=('.png','.jpg','.bmp')): I advise you to pick a color and always use that as your transparent color on your sprites (a common choice is magenta (255,0,255) and you will never miss it). In this case you should add a color key to the surface with set_colorkey().

Using convert_alpha tells it to use the actual alpha values of the original image.įor surfaces that don't contain transparency, you need to use regular convert(). In this case you do not need to use a colorkey. surfaces that DO contain transparency already, need to be converted with convert_alpha(). Firstly you should always convert your surfaces, there is no reason not to, and it improves blit speed.

Seems you found your answer but I just wanted to add something clear about surface conversion confusion.

Pygame image convert alpha