[ Converted text/html to text/plain ] Please excuse my last e-mail, Hotmail is a piece of sh*t... >:(
Anyway, I am working on a few features/additions for the compile tools and wanted to use Half-Life's additive rendering to blend two textures together. Not literally, of course, but simply use the same equation used in Half-Life to blend two textures together additively. Now, before you say "STFW!!!" I already have, and to my surprise I couldn't find much info. I did happen to read that additive blending was like glBlendFunc(GL_ONE, GL_ONE), however I couldn't decipher the MSDN docs to figure out what the actual equation would be :) One problem is that the texture miptex's in the WAD files are using 8-bit palettes. So while I can do the blending in 24-bit, I have to regenerate a new palette based on the end blend. Luckily, I am able to generate pretty good palettes with NeuQuant, an algorithm which uses Kohenen's self-organizing neural networks. However it isn't perfect. The problem I'm having here is that whenever I test out a new blending algorithm in an attempt to emulate Half-Life's, it's difficult to tell whether or not the error is with the algorithm or with the palette generated. I know a lot of Valve programmers hang out here, so if anyone could lead me in the right direction for the additive blending in Half-Life, that would be much appreciated. I'm pretty sure it's a OpenGL/D3D thing, but I couldn't decipher the docs and the web hasn't been helpful. :) And if anyone knows of a good palette generation algorithm, I'd like to hear about it :) Neural networks are supposed to be pretty dang good, but the code I'm using is from 1994, so who knows :P ------------------------------------------------------------------------------ Add photos to your messages with MSN 8. [1] Get 2 months FREE*. ===References:=== 1. http://g.msn.com/8HMBENUS/2749 _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlcoders
