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Katana's powerful and flexible look development environment combined wit= h RenderMan's state-of-the-art rendering technology come together to offer = the user a remarkable out-of-the-box experience for for high-end lighting a= nd rendering. RenderMan for Katana (RfK) provides seamless access to Render= Man's powerful rendering system for Katana users, who can take advantage of= the plugin's flexibility to create an optimal, customized pipeline.
The RenderMan plugin for Katana plays a dual role in a production pipeli= ne; it is the bridge by which a user generates rendered images from a Katan= a scene as well as the provider of access to the tools for building the 3D = elements within the scene. Although RfK is generally referred to as a= "plugin" it is in actually a collection of plugins, nodes, macros and othe= r tools which together allow the Katana user full access to the PRMan rende= ring system. Included in the RfK plugin package:
There is no need to "load" the RfK plugin. Once it is installed and = configured Katana = will find the package automatically and load the various modules as needed.=
RenderMan ships with built-in production-quality shaders and lights, the= same shaders and&= nbsp;lights in use= by Pixar Animation Studios on their feature films. Pixar shaders are loade= d automatically at startup and available through the standard Material node= or the PrmanShadingNode. Pixar lights can be created in GafferThree = with a single key-stroke or directly via the menu. Mesh lights can also be = created by simply selecting the geometry and creating a PxrMeshLight. = Viewer Modifiers and Manipulators are also included for the built-in lights= and light filters.
For more information, see the following documentation:
Live Rendering is iterative rendering where you can change parts of your= scene and see it update in the render. Live rendering improves light= ing and shading iteration. RfK supports offers the following features:
RenderMan For Katana supports studio customizations as much as possible.=
RenderMan includes = "it", a robust framebuffer/render view window which offers complete flo= ating point support and a powerful and flexible catalog. "it" is a fast and= powerful imaging tool that is capable of production-quality image manipula= tion and compositing usually found only in high-end standalone products. Th= anks to its integration with the plugin and an all-new Python scripting int= erface, "it" gives users the ability to incorporate sophisticated post-rend= er image operations into their rendering pipeline.
Photo Realistic RenderMan (PRMan) is designed to be fast and easy to use= while generating production-quality renders and global illumination works = out of the box and live rendering provides rapid iteration for artists.&nbs= p; RenderMan for Katana supports all aspects of PRMan through both standard= and PRMan-specific nodes.
Area Lights are a powerful way to create physically accurate lighting wh= ile optimizing sampling budgets and, in turn, performance. PRMan's area lights support = light filters, as = well as light-linking, groups, per-group AOVs, and IES profiles and portals= .
Sometimes called "Indirect Illumination," RenderMan for Katana supp= orts Global Illumination effects, subtle diffuse shading effects that are c= reated by sampling the lighting of a scene many times from a given point. T= his technique can yield highly realistic results. Occlusion, which merely s= amples the "coverage" of a point (and is cheaper than Indirect Illumination= ), is also supported automatically or through the PxrOcclusion Integrator.
RfK supports PRMan's first class volumetric rendering capabilities, enabling the creation = of volumetric effects including motion blur, multi-scattering, non-homogeno= us, etc.
Tessellation settings are never an issue with RenderMan when rendering <= a href=3D"/pages/viewpage.action?pageId=3D11469030">NURBS and subdivision surfaces. Sin= ce RenderMan renders true curved surfaces, NURBS and subdivision surfaces w= ill never have faceting artifacts.
RenderMan for Katana supports subsurface scattering, an important effect= for realistically rendering translucent materials, like skin, flesh, fat, = fruits, milk, marble, and many others. Subsurface scattering is responsible= for effects like color bleeding inside materials, or the diffusion of ligh= t across shadow boundaries. RfK includes support for ray-traced subsurface = scattering through materials shipped with RenderMan.
RenderMan for Katana supports secondary outputs (AOVs, or Arbitrary Outp= ut Variables), which can be any arbitrary information contained in a shader= . Users may also take advantage of Light Path Expressions (LPE) for powerful contro= l over outputs.
RenderMan for Katana is one piece of a potentially sophisticated product= ion pipeline. In order to get your work from script-to-screen you may need = more, and that is where Tractor enters the picture. By implementing RfK in = concert with Tractor and RenderMan Pro Server users can achieve a seamlessl= y integrated rendering workflow from desktop to renderfarm.
RenderMan Pro Server is the foundation of a high-performance rendering p= ipeline. It provides standalone implementations of the renderer and its cor= responding rendering utilities as well as access to APIs that allow savvy u= sers to extend functionality. As the core technology, RenderMan Pro Server = is the font from which all pixels flow.