[Pysdl-devel] A little trivia

[David C. <D. C. <si...@te...>]

I was doing a little video testing, profiling large numbers of blits
to the framebuffer, and noticed a few interesting facts...

A blit of a 7k bmp from one SWSURFACE to another took less than a
millisecond. Woohoo!

update_rect((0,0,0,0)) is expensive, but not prohibitivly so. Updating
a 640 x 480 surface all at once only took about 20 times longer than
updating a 64 x 48 rectangle, in spite of the fact that the surface is
100 times bigger than the rectangle.

There was no performance difference between windowed and fullscreen
drawing.

Blitting a png takes about 50% longer than an identical bmp. (Of
course, the png is compressed to 5% of the bmp's size :)

Out of curiousity, is anyone able to create a HWSURFACE? I'm simply
unable, using the setup below. I realize this is kind of off topic, so
feel free to ignore this question :)

i586 Celeron 525
Voodoo3 video card
XFree86 3.3.5
Kernel 2.2.12
SVGA video driver

Preliminary pySDL documentation:
http://www3.telus.net/futility/futility/docs/pysdl/index.html

-- 
I'd rather be lost in my empyrean world,
Than live down on earth...

I can't explain
Why I don't belong to this same world -
I don't fit in,
And I will not stay.
                            - Paula Cole, Saturn Girl