8/8/2023 0 Comments Pixar renderman teapot![]() This should lead to more predictable and user-friendly results than previously, but also leads to points appearing to be more translucent for a given presence level. This change also introduces a new interpretation of presence for RiPoints which works similarly to compositing alpha. If caching is enabled a single value will be used for each point. As part of this change, presence/opacity caching support has been added to the RiPoints primitive. Previously the nonshaded sources of translucency would not be correctly combined with the shaded sources leading to strange results. ![]() Geometry: RiPoints tracing has been rewritten to correctly combine translucency from the various sources available: shaded presence/opacity, point falloff and the Os primvar.When used this way, it strikes a balance between memory consumption and minimizing dicing artifacts ("popping") as the renderer switches between reference instances. Thus, this oracle may be helpful as the primary dicing strategy when used with the camera flying through multiply instanced geometry. The spherical projection dicing oracle will ignore all offscreen dicing controls and will not suddenly change behavior when an instance moves offscreen however, its projection also avoids overdicing geometry near the camera. Geometry: We have restored the spherical projection dicing oracle to the renderer after a long absence.Geometry: If you were rendering from RIB, Attribute "dice" "offscreendicingstrategy" was incorrectly ignored.Previously the width multiplier was arbitrarily limited to a maximum of 4x. Geometry: Curve minwidth is now able to expand curve widths to achieve the requested screen-space size without restriction.The error occured when "subsurfaceType" was 0-3 and "numSubsurfaceSamples" greater than 1. BxDFs: An error in the "followTopology" values for PxrSurface diffusion subsurface scattering has been fixed.BxDFs: LamaIridescence incidentAngle_Interpolation and targetHue_Interpolation can now be specified with a minimum of two knots in the spline, or a constant value, making it better behaved in Maya.BxDFs: LamaSurface: added a parameter to allow the user to enable presence/opacity caching.macOS: The new RenderMan 25.0 license server is now available.Pipeline: RenderMan now supports Python 3.10.Statistics: Built-in listeners for stats will now expand environment variables for file names found in the stats.ini configuration file.Patterns: Allow PxrPrimvar to better constant fold space transformations, giving better performance in RIS and better correctness in XPU.Please see the RenderMan 25.0 Release Notes for all of the new features and known limitations of RenderMan 25.0. This release provides you with bug fixes and minor enhancements. RenderMan version 25.1 builds on RenderMan 25.0, which provided major upgrades to look development and batch rendering, with many tools that improve artist workflows and complement the creative process. Elemental © Disney/Pixar Welcome to RenderMan 25.1
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