Hello, more than a year ago, I made a 3D raycasting engine in QBasic, and then I compiled with FirstBasic so it's much faster. Here's an animated screenshot of the thing: [img]http://www.perilith.com/~lode/tutorials/neowolf.gif[/img] I hope [img] code works, if not just go to here: http://www.perilith.com/~lode/tutorials/neowolf.gif As you can see it doesn't support texture mapping and has some glitches, but it DOES support real time lighting BTW by raycaster I do NOT mean the lighting only, but the complete engine works like old raycasters such as Wolf3D, only with a 3D array for the world instead of a 2D one. Anyway, I would like to port it to Windows, using DevC++. Problem is, for a raycaster like this, I need to draw each pixel individually. I've done a lot of research and experimentation already, but I'm getting nowhere. The few attempts that actually drew a pixel with DirectX, where so slow that just painting a rectangle pixel by pixel took a more than a minute, and this while games do 100FPS at 1024*768 = 78643200pixels/sec. Actually, drawing ONE pixel took longer than doing all the goniometric calculations and the casting of the ray for one pixel. I've already heard things like locking a surface and doing putpixel and such, but also that these methods are very slow. Then I heard it's possible to calculate all pixels first and draw them all at once after that, but I've no idea how to do that. So could someone please help me: how should I make a fast raycaster for windows? Does there exist an open source fast pixel plot demo somewhere? Or is there a tutorial on it? It doesn't even have to be DirectX, all I need is an easy and FAST way to draw individual pixels, RGB color, in windows. Thank you very much, Lode. [edited by - Lode on May 5, 2002 12:25:31 PM]

Thanks, but

I think I finally found a way to do it REALLY fast :D

With SDL! Easy, fast, and it works