v4.8.1

v4.8.1:

HIGHLIGHTS:

• Bug fixes and improvements

DETAILS:

• REBLUR_SH: fixed mis-normalized weighted sum for diffSh and specSh in HistoryFix pass (the regression appeared after finding a better initial weight for the center pixel)
• REBLUR_SH: minor performance optimization in "Temporal Stabilization" pass
• REBLUR_SH: fixed "touching" of specSh.w in HistoryFix pass, which is "modified roughness" and must not be processed in any way

v4.8.0

HIGHLIGHTS:

• NRD: improved FP16 viewZ support
• SIGMA: made more friendly to per light shadow denoising (multi-light scenario)
• removed unused (non-denoisers) SPECULAR_REFLECTION_MV & SPECULAR_DELTA_MV

DETAILS:

• NRD: exposed CommonSettings::viewZScale, which should help to improve FP16 support
• SIGMA: IN_SHADOWDATA => IN_PENUMBRA, IN_SHADOW_TRANSLUCENCY => IN_TRANSLUCENCY
• SIGMA: massaged front-end functions
• SIGMA: switched to use common IN_VIEWZ input instead of a custom one (it eliminates a need to clone ViewZ in case of multiple lights)
• REBLUR: minor tweaks
• SPECULAR_REFLECTION_MV: deprecated and removed
• SPECULAR_DELTA_MV: deprecated and removed
• updated docs

v4.7.0

v4.7.0:

HIGHLIGHTS:

• REBLUR: minor performance optimization
• SIGMA: numerous improvements and bug fixes
• SIGMA: temporal stabilization pass can be disabled, what makes SIGMA more useful for per-light shadow denoising if lights are many

DETAILS:

• REBLUR: number of steps in "prev-prev" test reduced to 1 (was 2)
• SIGMA: taken kernel from REBLUR
• SIGMA: per pixel rotations replaced with per frame rotations
• SIGMA: tuned random rotators (affects REBLUR too)
• SIGMA: improved "umbra in wide penumbra" behavior
• SIGMA: clarified usage of SIGMA_BackEnd_UnpackShadow
• SIGMA: reduced bias
• SIGMA: removed SigmaSettings::blurRadiusScale
• SIGMA: exposed SigmaSettings::lightDirection
• SIGMA: fixed mismatched behavior between opaque and translucent shadows
• SIGMA: anisotropic filtering support (currently only for directional light sources)
• SIGMA: reduced flickering in areas with a small blur radius (if TS is on)
• SIGMA: exposed SigmaSettings::stabilizationStrength (TS pass is disabled if 0)
• SIGMA: reduced umbra blurring when in wide penumbra
• NRD INTEGRATION: bug fixes for debug logging
• Updated deps
• Updated docs

v4.6.1

v4.6.1:

HIGHLIGHTS:

• NRD: shaders made compatible with Vulkan 1.2
• NRD: improved curvature
• REBLUR: various improvements

DETAILS:

• NRD: shaders made compatible with Vulkan 1.2
• NRD: improved curvature
• REBLUR: updated code to reflect fixes in MathLib
• REBLUR: reduced potential darkening on the screen boundaries

v4.6.0

v4.6.0

HIGHLIGHTS:

• REBLUR: exposed previously hard-coded parameter minBlurRadius
• NRD: no algorithmic changes

DETAILS:

• REBLUR: exposed minBlurRadius, which is used in the converged state
• REBLUR: blurRadius renamed to maxBlurRadius
• REBLUR: code cleanup
• SIGMA: code cleanup
• NRD INTEGRATION: updated to the latest NRI
• slightly updated docs

v4.5.0

v4.5.0:

HIGHLIGHTS:

• NRD: ResourceDesc::stateNeeded renamed to descriptorType to match ResourceRangeDesc::descriptorType because the former is a concatenation of the latter
• NRD: extended API for comfortable shader printf support (VK only)
• REBLUR: minor bug fixes

DETAILS:

• NRD: added shader printf support (VK only)
• NRD: stateNeeded renamed to descriptorType to match ResourceRangeDesc::descriptorType
• REBLUR: added missing "materialID" test for "vmb" specular motion
• REBLUR: improved fast history accumulation, which improves color clamping behavior
• NRD INTEGRATION: updated NRI
• Updated comments
• Updated README
• Updated UPDATE
• Updated deps

v4.4.3

v4.4.3:

HIGHLIGHTS:

• no changes

DETAILS:

• updated dependencies

v4.4.2

HIGHLIGHTS:

• NRD: fixed "NRD_IsValidRadiance" in NRD.hlsli

DETAILS:

• NRD: fixed "NRD_IsValidRadiance" in NRD.hlsli

v4.4.1

v4.4.1:

HIGHLIGHTS:

• RELAX: fixed new and old regressions in C++ side code

DETAILS:

• RELAX: fixed new and old regressions in C++ side code

v4.4.0

v4.4.0:

HIGHLIGHTS:

• NRD: improved API & robustness
• NRD: flexible DRS support (improved compatibility with engines using resource suballocation for DRS)
• NRD: IQ improvements
• NRD: added GLSL support for NRD.hlsli
• NRD: added "NRD_FrontEnd_SpecHitDistAveraging_X" functions, needed to properly average specular hit distance for correct specular tracking in case of many RPP

DETAILS:

• NRD: denoisers made less sensitive to NAN/INF values outside of denoising range and DRS rectangle
• NRD: added "NRD_FrontEnd_SpecHitDistAveraging_X" functions, needed to properly average specular hit distance for correct specular tracking in case of many RPP
• NRD: fixed regression: "motionVectorScale[] = 0 and isMotionVectorInWorldSpace = true" case was broken
• NRD: more flexible CTA definition
• NRD: improved performance by adjusting CTA sizes
• NRD: simplified constant data storage related code, ring buffer is not needed (2 Mb => 128 Kb)
• NRD: added GLSL support for NRD.hlsli
• NRD: refactored resource macros
• NRD: added "identifier" to "DispatchDesc" to distinguish which denoiser "ResourceType" is coming from
• NRD: greatly simplified C++ code by utilizing shared headers
• NRD: flexible DRS support
• NRD: minor DRS related fixes
• NRD: removed unused samplers
• NRD: clarified "gRectOffset" usage
• NRD: "gRectOffset" usage moved under NRD_USE_VIEWPORT_OFFSET macro (disabled by default)
• SIGMA: reduced bias, improved stability
• RELAX: greatly simplified C++ side code (181 Kb => 99 Kb)
• RELAX: fixed bugs preventing usage of non-square CTA sizes
• RELAX: minor fixes in HistoryFix pass
• RELAX: removed standalone "diffuse" and "specular" settings (was a shortened copy of "RelaxSettings")
• RELAX: reduced code entropy
• RELAX: fixed DRS related bug in AtrousSmem
• REBLUR / RELAX: out of bounds fixes
• REBLUR / RELAX: removed "historyFixStrideBetweenSamples"
• REBLUR / SIGMA: added snapping to pixel center in spatial passes
• REBLUR: replaced "table-flip" unicode emoji ¯\(ツ)/¯
• REBLUR: improved behavior on thin objects
• REBLUR: improved HistoryFix
• REBLUR: material IDs properly applied to all CatRom footprint (fixed outlining on material boundaries)
• REBLUR: fixed potential color bleeding caused by virtual motion disocclusion
• REBLUR: optional MV modification made stochastic based
• REBLUR: fixed suboptimal "vmb" reprojection behavior in disocclusions
• REFERENCE: renamed REFERENCE inputs
• NRD INTEGRATION: updated to reflect NRD API changes
• NRD INTEGRATION: NRI updated to v1.110
• Cmake: fixed unconditional use of CMAKE_MSVC_RUNTIME_LIBRARY
• updated docs and comments
• updated dependencies
• refactoring