wandersonp Posted November 17, 2011 Share Posted November 17, 2011 Hi guys. I'm new in houdini universe. And i want to know if Mantra uses some kind of Lens, Environment, or Volume shaders like Mental ray? Thanks Wanderson Quote Link to comment Share on other sites More sharing options...
symek Posted November 17, 2011 Share Posted November 17, 2011 (edited) Hi guys. I'm new in houdini universe. And i want to know if Mantra uses some kind of Lens, Environment, or Volume shaders like Mental ray? Thanks Wanderson Afaik none of them exist in Mantra in a form of mental ray's. Since mental ray is kind of black box in terms of rays resolving, you need these shaders to tell rays what to do when entering a scene (lenses), entering objects' volume (volumes), or missed ray hits (environment). Mantra, on the over hand, sends rays "manually" - specified by an user i.e. shader, thus you have an option to control its behavior, at least from a legacy point of view. In days of PBR, these ideas seem to be more and more tempting. Additionally lens shaders would work only in ray trace mode (as they do in mental ray), so they are quite limited for multi-engine renderer like Mantra. Some of this functionality can be emulated with built-in tools though. Fog shaders can work as lenses, lights' one as environment. Looks like some PBR internals are wired together this way. hth, skk. Edited November 17, 2011 by SYmek Quote Link to comment Share on other sites More sharing options...
wandersonp Posted November 17, 2011 Author Share Posted November 17, 2011 thanks Symek, I understood your explanation very well Wanderson Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.