Status

Chapter contract

STATUS is evidence-based. This page mirrors that discipline for the public monograph: what works, caveats, defining bugfixes, and how to update claims without lying.

Feature matrix

Feature	State	Evidence / notes
Build all targets	Works	Compile + link
PT Cornell	Works	Golden PASS
PT MetalRoughSpheres	Works	Golden @ 16 spp
PT env_demo / helmet	Works	OIDN clean stills
Deferred dielectrics	Works	Rooms / soft shading
Deferred metals + env	Caveat	IBL floor; not PT parity
OIDN	Works	Offline default
NRD	Works	YCoCg pack fixed
DLSS-RR / ReSTIR GI	Caveat	Interactive showcase path
SSS	Experimental	Biased look-dev
Skeletal animation	Removed	Renovation cleanup
OptiX denoise	Removed	Falls back OIDN

Defining bugfixes (remember these)

Bug

Fox.glb hang @ 4K

Dual full-res PathTracer OOM + offline init issues. Fix: lazy PT + 1080p default. Lesson: profile allocation policy is product, not detail.

Bug

NRD magenta

Linear RGB + raw hit-dist into REBLUR. Fix: YCoCg pack + norm hit-dist. Lesson: denoise contracts are part of the renderer API.

Bug

Deferred metals black

IBL only when irradiance cube set; dummy LUT zeroed. Fix: enable IBL on env bind + analytical LUT fallback. Remaining: full prefilter still thinner than PT multi-bounce.

Known limitations (not open bugs)

Deferred metals vs PT indoor multi-bounce chrome
SSS is not a BSSRDF — keep out of ground-truth claims
No GPU-less CI path yet
Static RT BLAS until animation returns with rebuild policy
Research tracks not on this public face until module-ready

How to update this page

Honesty protocol

Change STATUS.md only after running examples and looking at pixels
Update this chapter in the same PR as evidence
Never claim a feature from a commit message alone
Caveats stay visible — they build trust

Canonical source: repo STATUS.md. Monograph must not be rosier than that file.