7/24/2023 0 Comments Renderman noise itIt is capable of effects ranging from conventional cartoon shading to hatching or brush strokes, with the hatching reacting to emulated light effects, and supports custom AOVs and display filters. Pixar describes it as “super-customisable”, noting that work “usually done in comp” to stylise an image can now be performed directly during rendering. Lama: a robust new modular system for layered materials developed at ILM However, the toolset will only be available to users of the commercial edition of the software: something Pixar attributed to the work being a partnership with third-party developer LollipopShaders. RenderMan 24 will also feature Lama, a new layered materials system developed at Industrial Light & Magic, and and an “official part” of the ILM-developed MaterialX standard. Pixar described it as a “much more robust layering system” than the existing PxrLayerSurface material, avoiding the need to use a single material with a “ton of parameters”. Instead, Lama enables shading TDs to build up layered materials via a modular workflow, wiring together a series of BxDF (Bidirectional Distribution Function) nodes developed by ILM. They include BxDFs for dielectric and conductor materials, and a Lama version of the old PxrDisney shader with support for subsurface scattering. Other key features include LamaHairChiang, a layerable version of the Pixar Chiang hair shader used in production at Pixar, and support for dispersion: a common request among RenderMan users. Users can write their own custom nodes, but Pixar says that even out of the box, Lama can replicate most of the existing “monolithic” BxDFs included in the software. New Phasor Noise, Hex Tiling and Bump Mixer patterns In addition, the Preset Browser has been updated to save Lama materials and display filters, making it possible to share them between RenderMan-compatible DCC applications. RenderMan’s existing library of procedurally generated material Patterns has been rewritten to fully support OSL (Open Shading Language).Įxecution is accelerated on both Intel and AMD CPUs vai the SIMD AVX-512 extensions. New patterns available included Phasor Noise, developed at ILM during production on Star Wars: The Rise of Skywalker, and Hex Tiling, intended to blend tiled textures seamlessly. Vfx Reference Platform – Updated to the 2021 standard.There is also a new Bump Mixer, which replaces the old bump map handling system, and is described by ILM as meaning that users “don’t have to execute bump code three times”.Light Baking – Improved global illumination baking by up to 2x, as well as additional controls for controlling resolution.New Presets – New collections for fur, hair, stylization, diverse skin, and more.Preset Browser – Native QT support in Blender.MaterialX Lama Improvements – ILM’s material layering system gets a new iridescence material response and improved physical accuracy. Deformation Motion Blur – XPU now supports full deformation motion blur, enabling studios to use XPU to generate fast quality control renders.Bridge Updates – Houdini 19.5 and Katana 6 are now supported.Better Convergence – XPU support for Russian Roulette, Ray Depth, and more.New Patterns – Extend your look development with new color and bump nodes.USD Improvements – Houdini Solaris support has been improved with advancements in MaterialX, camera controls, motion blur, and more.Camera Controls – XPU now supports many controls of Pixar Camera, including depth of field and lens aberration.New Texture Cache – Improved performance on GPUs if the texture cache needs to do out-of-core texture lookups or is memory constrained.Progressive Pixels – Fractional first iteration display for improved image feedback with XPU, especially with very heavy models or volumes.Renderman 25 also includes an improved Stylized Looks toolset that offers more creative controls to create non-photorealistic images, as seen in the image below. According to the company, XPU convergence and interactivity have both been improved. Another major improvement with Renderman 25 can be found in Pixar’s XPU technology, which features increased support for volumes, secondary passes, trace groups, thin shadows, progressive pixels, and enhancements for look development, lighting, and interactivity.
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