v3.0.0:

HIGHLIGHTS:

- RELAX / REBLUR: improved compatibility with path tracing
- RELAX / REBLUR: improved IQ and performance
- RELAX / REBLUR: reworked settings, exposed new settings
- REBLUR: exposed performance mode
- NRD: improved compatibility with PS5, UE and LINUX

NRD:

- NRD: improved modularization of denoisers
- NRD: shared more code between denoisers
- NRD: introduced SPECULAR_REFLECTION_MV method
- NRD: introduced DELTA_OPTIMIZATION_MV method
- NRD: improved checkerboard resolve if pre-pass is on
- NRD: minimized values in NRD_ENCODING_ERRORS
- NRD: limiting PDF to sane values, improved packing
- NRD: shaders moved into per-denoiser sub-folders
- NRD: simplified normal encoding variants to UNORM and OCT
- NRD: added UPDATE.md simplifying understanding of changes in the API and settings
- NRD: introduced NRD_HEADER_ONLY for NRD.hlsli
- NRD: added missing prefixes for COMPILER macro in NRD.hlsli
- NRD: clarified "roughness" in NRD.hlsli
- NRD: added include guards into NRD.hlsli
- NRD: updated .gitignore

REBLUR:

- REBLUR: added performance mode with real-time switch
- REBLUR: added REBLUR_RESPONSIVE_ACCUMULATION_ROUGHNESS_THRESHOLD knob
- REBLUR: added footprint stretching test
- REBLUR: exposed "ReblurSettings::inputMix"
- REBLUR: exposed "ReblurSettings::minConvergedStateBaseRadiusScale"
- REBLUR: exposed "ReblurSettings::responsiveAccumulationRoughnessThreshold"
- REBLUR: fixed specular reprojection issues for low roughness
- REBLUR: fixed imprecision problems affecting weights in temporal accumulation
- REBLUR: fixed curvature in ortho mode
- REBLUR: improved performance
- REBLUR: improved compatibility with path tracing
- REBLUR: improved "materialID" support
- REBLUR: improved prev-prev normal test for specular reprojection
- REBLUR: improved curvature angle estimation
- REBLUR: improved error estimation
- REBLUR: improved precision of internal normals
- REBLUR: improved behavior in disocclusions
- REBLUR: improved error compensation if specular confidence is low
- REBLUR: reduced mip number to 4
- REBLUR: squeezed more normal and shadow details
- REBLUR: virtual parallax taken into account
- REBLUR: compressed hit distances used for hit distance confidence
- REBLUR: removed normal weight for virtual motion (prev-prev does the same)
- REBLUR: allowed small blur for low roughness if accumulation doesn't go well
- REBLUR: reprojection improvements
- REBLUR: tuned hitT weight & virtual history acceleration
- REBLUR: standardized settings
- REBLUR: simplified debug
- REBLUR: refactoring, standardization, simplification and unification

- RELAX: added footprint stretching test
- RELAX: shader modularization
- RELAX: fixed quarter resolution
- RELAX: fixed variance calculation in A-trous shaders
- RELAX: fixed potentially problematic function overloading for "Get*WorldPos"
- RELAX: improved performance
- RELAX: improved compatibility with path tracing
- RELAX: improved "materialID" support
- RELAX: improved prev-prev normal test for specular reprojection
- RELAX: improved "skip reprojection" logic
- RELAX: improved handling of normal imprecision in reprojection
- RELAX: removed spatial variance estimation pass
- RELAX: combined spatial variance estimation and Atrous_shmem
- RELAX: implemented specular reprojection for surfaces with negative surface curvature
- RELAX: refactoring
- RELAX: minor luminance weights fixes & updates
- RELAX: refactoring, standardization, simplification and unification

- REFERENCE: introduced dedicated input / output slots
- LINUX: updated SDK generation script
- NRD INTEGRATION: updated and fixed
- CMAKE: create shader output directory during deployment
- MATHLIB: updated
- README: updated

.gitignore

@@ -18,15 +18,22 @@ Makefile
 # VS Code
 .vscode/
 
-# Shaders
+# shaders
 *.dxbc
 *.dxil
 *.spirv
 *.dxbc.h
 *.dxil.h
 *.spirv.h
 
-# Library
+# ninja
+.ninja_deps
+.ninja_log
+build.ninja
+compile_commands.json
+*.log
+
+# library
 *.lib
 *.exp
 *.dll
@@ -36,12 +43,7 @@ Makefile
 *.so.*
 *.manifest
 
-# ninja
-.ninja_deps
-.ninja_log
-build.ninja
-compile_commands.json
-*.log
-
-# batch script
-_NRD_SDK/
+# generated folders
+_Build/
+_Compiler/
+_NRD_SDK/

3-Prepare NRD SDK.bat

@@ -27,10 +27,9 @@ if /I "%M%" neq "y" goto END
 
 mkdir "Shaders"
 
-copy "..\%NRD_DIR%\Source\Shaders\*" "Shaders"
-copy "..\%NRD_DIR%\Source\Shaders\Include\*" "Shaders"
-copy "..\%NRD_DIR%\External\MathLib\*.hlsli" "Shaders"
-copy "..\%NRD_DIR%\Include\*.hlsli" "Shaders"
+xcopy "..\%NRD_DIR%\Source\Shaders\" "Shaders" /s
+copy "..\%NRD_DIR%\External\MathLib\*.hlsli" "Shaders\Include"
+copy "..\%NRD_DIR%\Include\*.hlsli" "Shaders\Include"
 
 :END
 

3-Prepare NRD SDK.sh

@@ -24,8 +24,7 @@ if [[ $REPLY =~ ^[Yy]$ ]]
 then
     mkdir -p "Shaders"
 
-    cp ../$NRD_DIR/Source/Shaders/*.* "Shaders"
-    cp ../$NRD_DIR/Source/Shaders/Include/* "Shaders"
+    cp -r ../$NRD_DIR/Source/Shaders/ "Shaders"
     cp ../$NRD_DIR/External/MathLib/*.hlsli "Shaders"
     cp ../$NRD_DIR/Include/*.hlsli "Shaders"
 fi

CMakeLists.txt

@@ -42,12 +42,6 @@ set(CMAKE_POSITION_INDEPENDENT_BINARIES ON)
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN ON)
 
-# warning level 4 and all warnings as errors
-if (MSVC)
-    add_compile_options(/W4 /WX)
-else()
-    add_compile_options(-Wall -Wno-long-long -Werror)
-endif()
 
 if (NRD_DISABLE_INTERPROCEDURAL_OPTIMIZATION)
     set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ON)
@@ -69,21 +63,16 @@ if (NOT NRD_DISABLE_SHADER_COMPILATION)
     file(GLOB_RECURSE NRD_HLSL_MATHLIB_HEADER_FILES "${NRD_MATHLIB_INCLUDE_PATH}/*.hlsli")
     file(GLOB_RECURSE NRD_HLSL_INCLUDE "Include/*.hlsli")
 
+    file(MAKE_DIRECTORY ${NRD_SHADER_OUTPUT_PATH})
     include(ShaderCompilation.cmake)
 
-    # create "build/Shaders"
-    add_custom_target(CreateFolderForShaders ALL
-        COMMAND ${CMAKE_COMMAND} -E make_directory "${NRD_SHADER_OUTPUT_PATH}")
-    set_property(TARGET CreateFolderForShaders PROPERTY FOLDER "${NRD_PROJECT_FOLDER}")
-
     # define build rules for the shaders
     list_hlsl_headers("${NRD_HLSL_FILES}" NRD_HEADER_FILES)
     list_hlsl_headers("${NRD_HLSL_MATHLIB_HEADER_FILES}" NRD_HEADER_FILES)
     list_hlsl_headers("${NRD_HLSL_INCLUDE}" NRD_HEADER_FILES)
     list_hlsl_shaders("${NRD_HLSL_FILES}" "${NRD_HEADER_FILES}" NRD_SHADER_FILES)
-    add_custom_target(NrdShaders ALL DEPENDS ${NRD_SHADER_FILES} SOURCES "${NRD_HEADER_FILES}")
-    add_dependencies(NrdShaders CreateFolderForShaders)
-    set_property(TARGET NrdShaders PROPERTY FOLDER "${NRD_PROJECT_FOLDER}")
+    add_custom_target(NRDShaders ALL DEPENDS ${NRD_SHADER_FILES} SOURCES "${NRD_HEADER_FILES}")
+    set_property(TARGET NRDShaders PROPERTY FOLDER "${NRD_PROJECT_FOLDER}")
 endif()
 
 if (${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
@@ -116,7 +105,7 @@ target_include_directories(${PROJECT_NAME} PUBLIC "Include" "External")
 set_property(TARGET ${PROJECT_NAME} PROPERTY FOLDER "${NRD_PROJECT_FOLDER}")
 
 if (NOT NRD_DISABLE_SHADER_COMPILATION)
-    add_dependencies(${PROJECT_NAME} NrdShaders)
+    add_dependencies(${PROJECT_NAME} NRDShaders)
 endif()
 
 if (NRD_USE_PRECOMPILED_SHADERS)
@@ -131,9 +120,7 @@ else()
     target_compile_definitions(${PROJECT_NAME} PRIVATE NRD_ONLY_SPIRV_SHADERS_AVAILABLE=1)
 endif()
 
-if (NRD_STATIC_LIBRARY)
-    target_compile_definitions(${PROJECT_NAME} PUBLIC "NRD_API=extern \"C\"")
-else()
+if (NOT NRD_STATIC_LIBRARY)
     if(WIN32)
         target_compile_definitions(${PROJECT_NAME} PRIVATE "NRD_API=extern \"C\" __declspec(dllexport)")
     else()
@@ -145,10 +132,13 @@ if ((CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64") OR (CMAKE_SYSTEM_PROCESSOR MATCHES
     set(NRD_ARCHITECTURE_COMPILE_OPTIONS -msse4.1)
 endif()
 
+# warning level 4 and all warnings as errors
 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    target_compile_options(${PROJECT_NAME} PRIVATE ${NRD_ARCHITECTURE_COMPILE_OPTIONS} -Wno-missing-braces -Wno-return-type-c-linkage)
+    target_compile_options(${PROJECT_NAME} PRIVATE ${NRD_ARCHITECTURE_COMPILE_OPTIONS} -Wextra -Werror -Wno-return-type-c-linkage)
 elseif (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-    target_compile_options(${PROJECT_NAME} PRIVATE ${NRD_ARCHITECTURE_COMPILE_OPTIONS})
+    target_compile_options(${PROJECT_NAME} PRIVATE ${NRD_ARCHITECTURE_COMPILE_OPTIONS} -Wall -Werror)
+elseif (MSVC)
+    target_compile_options(${PROJECT_NAME} PRIVATE /W4 /WX)
 endif()
 
 if (NOT NRD_IS_SUBMODULE)

Include/NRD.h

@@ -30,10 +30,10 @@ license agreement from NVIDIA CORPORATION is strictly prohibited.
 #include <cstdint>
 #include <cstddef>
 
-#define NRD_VERSION_MAJOR 2
-#define NRD_VERSION_MINOR 12
-#define NRD_VERSION_BUILD 2
-#define NRD_VERSION_DATE "11 February 2022"
+#define NRD_VERSION_MAJOR 3
+#define NRD_VERSION_MINOR 0
+#define NRD_VERSION_BUILD 0
+#define NRD_VERSION_DATE "21 March 2022"
 
 #if defined(_MSC_VER)
     #define NRD_CALL __fastcall
@@ -44,7 +44,11 @@ license agreement from NVIDIA CORPORATION is strictly prohibited.
 #endif
 
 #ifndef NRD_API
-    #define NRD_API extern "C"
+    #if NRD_STATIC_LIBRARY
+        #define NRD_API
+    #else
+        #define NRD_API extern "C"
+    #endif
 #endif
 
 #include "NRDDescs.h"