Started by dandelO, December 16, 2009, 10:30:04 AM
Quote from: Tangled-Universe on December 17, 2009, 02:54:54 AMQuote from: Dune on December 17, 2009, 02:48:35 AMWhat was that about using bump maps/functions, TU? You mean inserting a bump map for displacement inside an object will get it bumped when ray-traced? I'll check that anyway. Some close-up trees (e.g.) would need a little roughness. I tried getting frost on grass leaves by inserting a small sized fractal (displaced), but it didn't have the result I hoped for, although it did roughen the white.---DuneIf I understood correctly you can't displace the objects anymore when using the raytracer for rendering the objects, instead you can use imagemaps or fractals to create a bumpfunction to mimic displacement/added geometry. The roughness obtained is "fake" (in terms of geometry) but it will probably give a better look as if it is really displaced.You should be able to find some more info about this on the dev forum. If I find it I'll PM it to you.Martin
Quote from: Dune on December 17, 2009, 02:48:35 AMWhat was that about using bump maps/functions, TU? You mean inserting a bump map for displacement inside an object will get it bumped when ray-traced? I'll check that anyway. Some close-up trees (e.g.) would need a little roughness. I tried getting frost on grass leaves by inserting a small sized fractal (displaced), but it didn't have the result I hoped for, although it did roughen the white.---Dune
Quote from: Oshyan on December 17, 2009, 03:51:17 AMBasically you don't need to make any changes to your scene (object) setups, it's just that instead of rendering with displacement, objects (using raytraced rendering) render with bump mapping. You use the same images and node connections.- Oshyan
Quote from: Matt on December 16, 2009, 01:00:30 PMWhen you enable ray trace objects the following types of objects are rendered using ray tracing:Grass ClumpLWO ReaderOBJ ReaderRockTGO ReaderThey are optimised for ray tracing, and optimised for rendering in populations with or without ray tracing.All the other object types are rendered using the micropolygon renderer so that displacements are rendered correctly and efficiently:DiscLakePlanePlanetSphereHowever, if you enable ray trace everything, these displacement-friendly objects take longer to render and their displacements are rendered at a lower detail.(Edit: Lake is one of the displacement-friendly objects)
Quote from: dandelO on December 17, 2009, 10:17:39 AMHmmm, this is interesting, I forgot about the rock object simply because it couldn't be displaced without fracturing. Now that it's ray traced and that bump mapping can be applied, these fractures shouldn't happen anymore, right? So we can now use bumpy rocks?
Quote from: buzzzzz1 on December 17, 2009, 09:31:49 AMQuote from: Oshyan on December 17, 2009, 03:51:17 AMBasically you don't need to make any changes to your scene (object) setups, it's just that instead of rendering with displacement, objects (using raytraced rendering) render with bump mapping. You use the same images and node connections.- OshyanSo what you are saying is we do nothing different other than checking "Ray Trace Objects" ?