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Blender 4.5 LTS: Cycles

Adaptive Subdivision

  • Support previously missing features. (PR#135681)
    • Attribute subdivision
    • Smooth UV subdivision
    • Motion blur
  • Modifier subdivision levels are now ignored. (PR#135895)
  • Multithreading to improve performance. (PR#136411)
  • Reduced vertex and triangle count when no subdivision is needed.

Bump Mapping

  • Improved bump correction. The new correction avoids washed out areas near the shadow terminator, preserving more detail from normal and bump maps. (PR#135380)
  • New Filter Width input on the Bump node. This defaults to 0.1, while higher values like 1.0 may be used to emulate a bevel like effect on sharp edges in textures, like a procedural checker texture or pixel art image with closest filtering. (PR#136465)

Custom Cameras

  • In addition to the built-in camera types (perspective, orthographic and panoramic), it's now possible to implement custom cameras using OSL. This can be enabled independently of OSL shading, but requires hardware support and is therefore currently limited to CPU and OptiX devices. (PR#129495).

GPU Rendering

AMD