There's a tiling option inside the noise map under the 'texture placement' tab. You can achieve the same results leaving the biding in auto mode and messing with the noise map only. That's the procedure for displacement to work.Ģ- I binded the material to a v-ray texture helper, so I could control the noise map size/ tiling throught the sketchup material, but you don't need that. Now, answering your questions:ġ- For displacement to work in any surface, first, this surface must be a group, second, the material has to be applyied to both front and back faces, as well as to the group. I feel like I finally have a way to recreate this effect reliably on future projects and I'm starting to learn how the procedural map scaling works in real-world units. How does the noise map size and the texture size relate? Am I correct in remembering that VRay's native units are meters? Does a noise map size of 1 mean 1 meter? Why does the material have to be applied to the group?Ģ. Noise Map Sizes = 4 to 15 gave the same results as leaving the noise map size at 1 and changing the texture map size.ġ. Noise Map Size = 0.5, texture sizes needed to double, which was not surprising.įinally, I created another water material and didn't set it to use VRay's Texture Helper (and therefore, I couldn't change the texture size). Personally, liked the look of about 10" x 10". Noise Map Size = 1, texture sizes 4"x4" to 15"x15" worked well. Leaving it applied to the group, I played with the scales. When I applied the material to the surface directly, not the group, it never worked, no matter what the noise map and texture sizes were set to.
After experimentation, I found two things that seem to affect it: applying the material to the group and the combination of sizes in the noise map and the texture (in the SketchUp material editor, but it requires setting the material's binding property to be set to VRay's Texture Helper so the SketchUp texture sizes can be used). I looked through the settings-render, sun, material-and couldn't find anything different. I downloaded the file and as-is, it renders the pool caustics beautifully.
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