ba4589e894
Implementation of the design task #142969. This adds the following: - Exact GPU interpolation of curves of all types. - Radius attribute support. - Cyclic curve support. - Resolution attribute support. - New Cylinder hair shape type.  What changed: - EEVEE doesn't compute random normals for strand hairs anymore. These are considered legacy now. - EEVEE now have an internal shadow bias to avoid self shadowing on hair. - Workbench Curves Strip display option is no longer flat and has better shading. - Legacy Hair particle system evaluates radius at control points before applying additional subdivision. This now matches Cycles. - Color Attribute Node without a name do not fetch the active color attribute anymore. This now matches Cycles. Notes: - This is not 100% matching the CPU implementation for interpolation (see the epsilons in the tests). - Legacy Hair Particle points is now stored in local space after interpolation. The new cylinder shape allows for more correct hair shading in workbench and better intersection in EEVEE. | | Strand | Strip | Cylinder | | ---- | --- | --- | --- | | Main |  |  | N/A | | PR |  |  |  | | | Strand | Strip | Cylinder | | ---- | --- | --- | --- | | Main |  | | N/A | | PR | ||  | Cyclic Curve, Mixed curve type, and proper radius support:  Test file for attribute lookup: [test_attribute_lookup.blend](/attachments/1d54dd06-379b-4480-a1c5-96adc1953f77) Follow Up Tasks: - Correct full tube segments orientation based on tangent and normal attributes - Correct V resolution property per object - More attribute type support (currently only color) TODO: - [x] Attribute Loading Changes - [x] Generic Attributes - [x] Length Attribute - [x] Intercept Attribute - [x] Original Coordinate Attribute - [x] Cyclic Curves - [x] Legacy Hair Particle conversion - [x] Attribute Loading - [x] Additional Subdivision - [x] Move some function to generic headers (VertBuf, OffsetIndices) - [x] Fix default UV/Color attribute assignment Pull Request: https://projects.blender.org/blender/blender/pulls/143180
This folder contains files used by ctest testing system in Blender. The purpose of this files it to do automated render tests for Cycles, Workbench and EEVEE. If you want to extend this collection make sure the file is really small and uses as few samples as possible for reliable detection of render regressions. Each file is expected to be rendered in around one second.