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Cle2ment / RayTracing Public

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feat: GGX Microfacet BRDF — physically-based metallic & specular rendering#9

Merged

Cle2ment merged 12 commits into

masterCle2ment/RayTracing:masterfrom

feat/ggx-microfacet-brdfCle2ment/RayTracing:feat/ggx-microfacet-brdfCopy head branch name to clipboard

Jun 4, 2026

Conversation Commits12 (12)Checks Files changed

Merged

feat: GGX Microfacet BRDF — physically-based metallic & specular rendering#9
Cle2ment merged 12 commits into
masterfrom
feat/ggx-microfacet-brdf

Commits

Commits on Jun 4, 2026

feat: GGX microfacet BRDF on CUDA GPU path
Cle2ment
committed
feat: GGX microfacet BRDF on CPU C++ path
Cle2ment
committed
feat: GGX microfacet BRDF on ISPC SIMD CPU path
Cle2ment
committed
fix: remove unnecessary fabsf on NdotV in GGX BRDF
Cle2ment
committed
fix: GGX BRDF — remove albedo double-count, fix Fresnel angle and specPdf denominator
Cle2ment
committed
fix: GGX reflection uses WoDotH not NdotH — correct wi direction
Cle2ment
committed
fix: use only VNDF sampling PDF — remove biased mixture PDF
Cle2ment
committed
refactor: GGX with random-selection specular/diffuse sampling
Cle2ment
committed
debug: add pure diffuse fallback at roughness>=0.999
Cle2ment
committed
refactor: simplified GGX with NDF sampling, world-space math
Cle2ment
committed
fix: replace WoDotH sign-flip with proper break for invalid half-vector
Cle2ment
committed
fix: use VNDF sampling — guarantees WoDotH>0, no break needed
Cle2ment
committed

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