In theory, this isn't too hard (well, at least the case of a camera in the corner of the screen).
If you've heard of/used OpenCV or V4L API, you basically just grab a camera frame each loop iteration (probably need to make sure the frame is a power of 2 on each side, e.g. 256x256) and use glTexSubImage2D( ... ) to download this to a texture. If you are just making an in-game feed (like a video in the corner of the screen), then you can do a quick, hackish glBegin(GL_QUADS) ... glEnd() to draw a small rectangle in a corner of the screen with this texture (your camera image frame). If you want to use a video as a texture (now we're getting tricky), you'd probably need some kind of special way to mark that a texture should be from a camera/SWF input, maybe by checking if the texture filename ends in .swf or some special camera texture e.g. "!camera". Rendering a SWF to an off-screen surface to produce a frame of animation is way beyond the scope of Quake III and probably would require a separate library, but assuming you could, calling glTexSubImage2D( ... ) would once again be used. You'd probably need to add code to the main loop to update any "video textures", and if done properly, there shouldn't be much to change on the actual rendering. A pitfall is that many camera directly capture to JPEG image or non-RGB formats, making them unsuitable for textures -- I think OpenCV provides a way to get RGB/BGR data from this, otherwise, you'll have to write some colorspace conversions (YUV->RGB) or use the libjpeg. I hope this is a starting point for you and good luck. Patrick On Wed, Mar 31, 2010 at 11:37 AM, Thys <recyclero...@gmail.com> wrote: > Hello! > > I'm a interaction student from belgium and currently working on a Quake3 > project, I've setup a linux box that sends out messages to Max/MSP (or > PureData) from ingame Quake, now I want to try to add a live webcam stream > INGAME, so some kind of dynamic texture or just a swf or something, after 3 > days of sleepless nights I'm really desperate, anyone any idea? > > Any help is greatly appreciated!! > > Greetings, Thys > > _______________________________________________ > ioquake3 mailing list > ioquake3@lists.ioquake.org > http://lists.ioquake.org/listinfo.cgi/ioquake3-ioquake.org > By sending this message I agree to love ioquake3 and libsdl. >
_______________________________________________ ioquake3 mailing list ioquake3@lists.ioquake.org http://lists.ioquake.org/listinfo.cgi/ioquake3-ioquake.org By sending this message I agree to love ioquake3 and libsdl.
