#Renderman tutorial maya how to#
The following table explains how to export both scalar and vector displacement maps. Using ZBrush Displacement MapsģDelight for Maya can render ZBrush displacements (both vector and scalar) using the standard displacementNode shader. Provides very high quality displacement but might be subject to cracking, especially for vector displacement and large displacements.ĭisable Smooth UVs. Although in the case of subdivision surfaces, this metod might use less memory overall because final tessellated and displaced geometry is stored as a polygonal mesh (more compact than the subdivision mesh counterpart). Potentially higher memory usage depending on the Subdivision Steps. This is not always true though: in this case, 3Delight needs to keep original geometry in memory and this could be expensive in case of subdivision surfaces. Lower memory usage thanks to a smart caching system. The higher the steps the slower is the pre-processing time. This depends on the number of Subdivision Steps. Potentially slower startup time because of pre-tessellation requirement. The available options are:įast startup time because no pre-processing is required. This parameter, which also applies to scalar displacements, defines in which 3D space the displacement is defined.
The "render as bump" option is provided to easily switch from Displacement to Bump. Despite the misleading names, both Vector Encoding and Vector Space are supported in the case of scalar displacements.įor scalar displacements, the Vector Displacement parameter is not used. It is not used for obvious reason: the displacement vector is implicitly the surface normal.
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RenderMan also has advanced features for creating sophisticated effects:Ī familiarity with RenderMan will help to successfully leverage its strengths in the production of high quality CG imagery.An example of scalar displacement applied on a subdivided head for skin rendering.įor scalar displacements, all parameters are recognised but one: Vector Displacement. Learn more about some of the other fundamental strengths of RenderMan: In the example above, if we were renderering 100 teapots, and not just one, we would begin to appreciate RenderMan's ability to handle large, complicated scenes. For instance, RenderMan is memory efficient and it excels at rendering lots of geometry.
As you become more familiar with RenderMan you will become aquainted with where its strengths are to be found. You may notice, however, that in the example above both images render in about the same amount of time and with approximately the same level of quality.
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This allows the Maya artist to harness the full power of RenderMan with a minimal amount of hassle. For more information about what elements are supported, see the What is Supported? section. RenderMan for Maya will translate the majority of elements in any given Maya scene file. RenderMan for Maya allows Maya scenes to be rendered with RenderMan simply by switching renderers. With any luck, your result should look like this:Ĭongratulations! You've rendered an image with RenderMan!
Now you're ready to render the scene with RenderMan: Next we'll render the scene using RenderMan. The scene should look something like this:įirst, render the scene using the Maya renderer: The teapot is a hierarchical subdivision surface. This scene is simple, but it contains a number of Maya Materials, including the ramp shader and some texture maps. With RenderMan for Maya fully loaded, open up the Maya scene, teapot_and _box.ma. You can view setup information in the Load RenderMan for Maya section. To get started, let's render the Maya scene, teapot_and _box.ma.įirst of all, make sure that RenderMan is properly set up.
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