boradayioglu Posted May 4, 2003 Share Posted May 4, 2003 Hi everyone, I`m learning houdini and need to ask you something about VEX builder. Simply, my question is how do I create a volume shader (in VEX Builder)similiar to VEX 3dTexture Fog? The reason I`m trying to do this is that when I create predefined VEX 3dTexFog shader in SHOP, I can not fine tune colors, textures etc. so I was thinking about creating a similiar one from scratch so I can have more control. I`ll need to use texture3d in the shader but couldn`t figure out how.... Thanks a lot for your help!... Quote Link to comment Share on other sites More sharing options...
boradayioglu Posted May 12, 2003 Author Share Posted May 12, 2003 alright... i figured it out... basically i end up with writing my own ray marcher as a surface shader... thanks anyways Quote Link to comment Share on other sites More sharing options...
old school Posted May 13, 2003 Share Posted May 13, 2003 Use the integrate3d VOP to do your ray-march integrating for you. Just specify the two points and let it do it's work. This VOP, or the concept behind it, is the reason why the i3d format is so fast. It very quickly integrates all the lights at the specified filter width very much faster than a traditional ray marcher. Quote Link to comment Share on other sites More sharing options...
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