Re: [pygame] Pygame VS PyOpengl?

[Pete Shinners <pete@shinners.org>]

campbell barton wrote:
> hello all, I am going to make a 2D game which will use lots of
> alpha's and a scrolling background, (ala chromium bsu)
>
> What I would like to know is- Can pygame use hw alpha surfaces (Even
> IF the moons have to be alligned) or would PyOpengl be a faster
> option?
anytime you want to use graphics with alpha. opengl is probably the only 
option. 2d hardware and software can do quick colorkeys, but software 
alpha is pretty slow, and hardware alpha doesn't really exist for most 
2d apis (and therefore, even slower). on the other hand, it is very 
"easy" to use graphics with alpha in pygame, usually just not fast enough.

you can mix pygame and pyopengl very well. pygame can handle all the 
window/sound/input stuff, and all the rendering is done with straight 
opengl calls.

the best way to draw the graphics in opengl is with textured quads. 
there is some stuff in opengl to "blit" 2d graphics to the display, but 
this is a slow pipeline on most graphics cards.




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