Hi guys, I've a problem I working with the SDL under linux and under windows too, and the HWSURFACE are not supported (I've a ATI Radeon Mobility 9000 IGP). So the fps is very slow (24 fps). I've 3 surfaces. Screen -> 640x480x32 Tiles -> 320x128x24 VirtualScreen -> 1280x1024x24 (where I draw my world) All the surface are passed through the SDL_DisplayFormat(tiles); I use SDL_Flip to draw the scene... Where I wrong? Is better use another libraries?

Try it without SDL_DisplayFormat. What are you doing that makes it slow?

Make sure everything is display formatted into 32bpp. Make sure your FPS counter works right.

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Original post by NighTiger Screen -> 640x480x32 Tiles -> 320x128x24 VirtualScreen -> 1280x1024x24 (where I draw my world)

Wait, are you drawing the entire 1280 x 1024 surface or just a portion of it everytime? So my question is how are you blitting that surface to the screen?

Are you passing everything through SDL_DisplayFormat for *every* frame? That's gonna be *sllooooooowww*. Always make sure that all your surfaces have the exact same format (the format of the video surface). If needed, convert them *once*, in the init part of your program.

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Original post by Anonymous Poster If you're already doing this, then never mind.

okkey... never mind because I just doing this :°°°°(

What do you need the virtual screen for anyway?

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Original post by Kylotan What do you need the virtual screen for anyway?

I use my VS for make a map with tiles

Why not just blit the relevant tiles directly to the screen?

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Original post by Kylotan Why not just blit the relevant tiles directly to the screen?

because the screen is more thin than the vs, and I would like make a function that blit only the portion of vs is visible on the screen.