Alpha Piscium

Highlight

• Major improvements to ReSTIR SSGI stability and quality

New

• Readded RCRS anti firefly to GI denoiser pipeline
• Added ReSTIR Temporal Reuse Limit setting for better user control on GI responsiveness
• Added FXAA as TAA history missing fallback

Improvement

• Combined sun and moon Sky-View LUT
• Optimized colored shadow precondition check
• Uses blue noises in ReSTIR for better noise distribution
• Reduced denoiser history fix leaks
• Improved shadow AABB calculation and cleanup
• ReSTIR uses full bilateral bilinear temporal resampling to improve stability and quality
• Updated default accumulation settings for less lighting lags
• Reduced GI reprojection false anti-stretching history kills
• GI denoiser history fix skips first 3 LODs for fewer fireflies
• Replaced bloom hard clipping with soft clipping
• Switch TAA variance AABB history ratification from clamping to clipping
• Optimized ReSTIR reuse passes
• Water volume tweak
• Use AABB clipping for fast history clamping
• Use bilinear on fast history for free blurring and fewer noises
• Use distance between probe pixel position and origin position as fade distance

Fix

• Fixed atmosphere mie coefficient calculation for low turbidity value
• Fixed DH water material detection
• Fixed DH water shadow blending
• Fixed random emissive from DH solid
• Slightly mitigated shadow acne
• Fixed SSS singularity bug in SRGB rendering working space
• Removed denoiser stabilization pass to fix bleeding
• Fixed GI grid pattern artifacts caused by bad reprojectInfo.curr2PrevScreenPos precision
• Fixed TAA reset missing
• Fixed emissive bug on 0 albedo material

Misc

• Migrated cloud ambient LUT to shadesmith tiles for optimized texture management
• Cleaned up SSBO usage
• Removed env probe setup clearing
• Fixed make zip naming

New

• Added FXAA as TAA history missing fallback

Improvement

• Replaced bloom hard clipping with soft clipping
• Switch TAA variance AABB history ratification from clamping to clipping
• Optimized ReSTIR reuse passes
• Water volume tweak

Fix

• Fixed SSS singularity bug in SRGB rendering working space
• Removed denoiser stabilization pass to fix bleeding
• Fixed RGBA16F atlas size

Highlight

• Major improvements to ReSTIR SSGI stability and quality

New

• Readded RCRS anti firefly to GI denoiser pipeline
• Added ReSTIR Temporal Reuse Limit setting for better user control on GI responsiveness

Improvement

• Combined sun and moon Sky-View LUT
• Optimized colored shadow precondition check
• Uses blue noises in ReSTIR for better noise distribution
• Reduced denoiser history fix leaks
• Improved shadow AABB calculation and cleanup
• ReSTIR uses full bilateral bilinear temporal resampling to improve stability and quality
• Updated default accumulation settings for less lighting lags
• Reduced GI reprojection false anti-stretching history kills
• GI denoiser history fix skips first 3 LODs for fewer fireflies

Fix

• Fixed atmosphere mie coefficient calculation for low turbidity value
• Fixed DH water material detection
• Fixed DH water shadow blending
• Fixed random emissive from DH solid
• Slightly mitigated shadow acne

Misc

• Migrated cloud ambient LUT to shadesmith tiles for optimized texture management
• Cleaned up SSBO usage

Highlight

• Added limited Built-in PBR support
• Improved translucent rendering with double refraction

New

• Added limited Built-in PBR support (Foliage SSS, Translucent, and Emissive)
• Added double refraction for non-water translucents for more accurate light bending
• Added more per-material translucent absorption settings

Improvement

• Migrated TranslucentSST to the new SST implementation, greatly simplifying the code
• Improved cloud spherical shell setup
• Improved water scattering with new phase function based on Petzold data

Fix

• Fixed translucent sky reflection error
• Fixed DH (Distant Horizons) support
• Fixed missing TAA clamp mix logic
• Fixed cloud spherical shell setup
• Fixed insanely bright emissive from end rod and charged lightning rod

Misc

• Increased default PCSS sample count for better shadow softness

Highlight

• Major performance optimizations on rasterization pass
• Config profiles for different quality/performance tiers

New

• Added config profiles for different quality/performance tiers
• Added Assume NV GPU option for NVIDIA-specific optimizations
• Separated SSS sample count from blocker search count for better control

Improvement

• Optimized gbuffer pass viewZ attribute by computing from gl_FragCoord.w
• Optimized terrain draw normal vertex attributes
• Optimized shadow pass attributes
• Optimized denoiser reproject register usage
• Optimized denoiser stabilization pass occupancy
• Removed some vertex attributes for passes that don't need them
• Optimized SST register usage and ray sorting key layout
• Optimized GI5 storing handle register usage
• DenoiseBlur FP16 optimization
• ReSTIR temporal reuse math simplification
• Early return branching optimization
• Updated TAA filter kernel for lower quality profile
• Reduced TAA motion blur
• Tone mapping tweak
• Moved cloud clear from GIReproject to ShadowSample pass to balance VRAM loads
• Moved fast history storing to history fix pass to balance VRAM loads
• Emissive color curve now performed in input color space for better consistency
• Removed spatial reuse feedback due to firefly artifacts

Fix

• Fixed hit distance on disocclusion
• Fixed backward analysis distance check
• Fixed GBufferTranslucent material id reading
• Fixed RTWSM forward analysis writing position
• Fixed extra water tinting
• Fixed history length diffusion killing disocclusion fix

Misc

• Removed unused shadow specular output and associated references
• Removed reservoir age reset