v1.2.11

SDK

Features and Improvements

• Improved flexibility for specifying thresholds for probe ray backface hits
  • The backface hit threshold used in ProbeBlendingCS is now adjustable
  • Thresholds for random rays (blending) and fixed rays (relocation/classification) can now be specified separately
  • Note: this change modifies the DDGIVolumeDescGPU struct
• Improved lighting responsiveness after a probe is scrolled (and cleared)
  • Drops hysteresis to zero for the first update cycle after a probe is scrolled and cleared
  • Note: hysteresis is now set to zero for all probe texels where the previous irradiance is zero in all color channels
• Renames DDGIResetScrolledPlane() to DDGIClearScrolledPlane() to better reflect its purpose
• Adds option to use shared memory during probe scroll clear testing
  • When enabled, scroll clear tests will only run for the first thread of a blending thread group
  • RTXGI_DDGI_BLEND_SCROLL_SHARED_MEMORY is now a required define for ProbeBlendingCS.hlsl
  • Can be a performance win on some hardware

Bug Fixes

• Fixes issue where some probes were not being cleared properly during scrolling events (Issue #62)
  • Note: this change modifies the DDGIVolumeDescGPU struct

Test Harness

Features and Improvements

• Improves support for loading GLTF files that contain geometry primitives without assigned materials (Issue #61)
• Updates UI to reflect the separate random and fixed probe ray threshold options