the fastest 2d hardware accelerated library

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phanaton
Posts: 3
Joined: Sun Jan 31, 2010 2:15 am

the fastest 2d hardware accelerated library

Post by phanaton »

Hi I'm searching a very fast 2d blitting library because SDL is very slow...
My Problem is in general quite easy,
I'm just coding a 2d tilemap based engine but with around 15 fps by drawing the screen full with 16x16 tiles,
SDL is just to slow.
So now I'm searching for a library that is blitting the images faster to the screen. By the way the tilemap I used is an RGBA picture. Is it a way faster to use 16bit images?
Is the GL library much faster to do such jobs?
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jojojoris
Posts: 255
Joined: Sun Mar 30, 2008 4:06 am

Post by jojojoris »

The fastest is the sceGU library.

16 is half the size of 32 bit. 16 bit is faster.

Code: Select all

int main(){
     SetupCallbacks();
     makeNiceGame();
     sceKernelExitGame();
}
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phanaton
Posts: 3
Joined: Sun Jan 31, 2010 2:15 am

Post by phanaton »

Okay i thought it so ...

do I have to load an Image with an external library or is there a function included?
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Criptych
Posts: 64
Joined: Sat Sep 12, 2009 5:18 am

Post by Criptych »

phanaton wrote:Okay i thought it so ...

do I have to load an Image with an external library or is there a function included?
External library. libpng is a popular one. :)
"You hungry? I haven't eaten since later this afternoon."
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phanaton
Posts: 3
Joined: Sun Jan 31, 2010 2:15 am

Post by phanaton »

okay thanks.
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willow :--)
Posts: 107
Joined: Sat Jan 13, 2007 11:50 am

Post by willow :--) »

I never tried SDL, but at 15fps I'd assume there's something else you're doing wrong.
I'm not saying it's not SDL, but have you considered other root causes ? I've seen so many games that reload their textures at every frame, for example...
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jojojoris
Posts: 255
Joined: Sun Mar 30, 2008 4:06 am

Post by jojojoris »

SDL is slow. it does a lot of stuff nobody actually need.
OSLIB_MOD is something similar but designed for psp so faster.

If you don't have experience with OpenGL or sceGU i reccomend oslib_mod

Code: Select all

int main(){
     SetupCallbacks();
     makeNiceGame();
     sceKernelExitGame();
}
Top
Criptych
Posts: 64
Joined: Sat Sep 12, 2009 5:18 am

Post by Criptych »

willow :--) wrote:I never tried SDL, but at 15fps I'd assume there's something else you're doing wrong.
I'm not saying it's not SDL, but have you considered other root causes ? I've seen so many games that reload their textures at every frame, for example...
I don't know how up-to-date the information was, but I've read the PSP port of SDL is completely software-based, i.e. no GPU or VFPU acceleration. And I can say even from my limited experience that it's very slow: I tried converting "Gannatsu Portable" to use PNG instead of BMP, since it takes so long to load BMP - even though they're only 256 colors, some are as big as 640x640. It worked; however, while the PNG images loaded faster, the game itself ran at about half the speed.
"You hungry? I haven't eaten since later this afternoon."
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