Hardware path tracer: progressive + realtime modes (PT-1/2/3/3b)#92

Merged

proggeramlug merged 16 commits into

mainfrom

feat/path-tracer

Jul 14, 2026

Commits on Jul 13, 2026

feat(pt): mode plumbing + roadmap for the three-tier path tracer
Ralph Kuepper
committed
feat(pt): PT-1 progressive path-trace megakernel (M1+M2 verified)
Ralph Kuepper
committed
feat(pt): PT-2 real hit shading + fix transposed inv_vp ray generation
Ralph Kuepper
committed
feat(pt): PT-2 GGX specular + Burley diffuse BRDF sampling
Ralph Kuepper
committed
docs(pt): PT-2 M3 status - GGX landed, specular NEE rolls forward
Ralph Kuepper
committed
fix(pt): make F9 usable in gameplay - dissolve-in progressive + firefly clamp
Ralph Kuepper
committed
feat(pt): PT-3 M1 - temporally reprojected realtime mode + AO degate
Ralph Kuepper
committed
fix(pt): kill RT-mode fireflies at the source - Fresnel-at-view lobe pick
Ralph Kuepper
committed
feat(pt): PT-3 M2 - edge-aware a-trous denoiser for realtime mode
Ralph Kuepper
committed
feat(pt): PT-3 M3 - half-res tracing + SVGF-style filtering for RT mode
Ralph Kuepper
committed

Commits on Jul 14, 2026

fix(pt): despeckle pass + history-guided spike clamp for RT sparkles
Ralph Kuepper
committed
feat(pt): IGN-structured primary sun sampling + deeper RT history
Ralph Kuepper
committed
fix(pt): freeze the RT sample sequence - zero PT-injected temporal noise
Ralph Kuepper
committed
feat(pt): hybrid direct sun + sun specular for realtime mode
Ralph Kuepper
committed
feat(pt): decouple the realtime ray budget from the raster render scale
Ralph Kuepper
committed
feat: PT-3b - canonical SVGF denoiser for the realtime path tracer
Ralph Kuepper
committed