Blender 5.1 with DLSS build

----- STEP 1: INSTALL SOFTWARE ------
Install Visual Studio 2022 Community with C++ workload. https://aka.ms/vs/17/release/vs_community.exe
Install Git https://git-scm.com/install/windows
(Optional) Download VSCODE - to use it as terminal and explorer https://code.visualstudio.com/download
Install OptiX https://developer.nvidia.com/designworks/optix/download
Install CUDA 12.9 https://developer.nvidia.com/cuda-12-9-1-download-archive?target_os=Windows&target_arch=x86_64&target_version=10
    Set system Environment variable via Windows (start-> Environment variables)
   CUDA_TOOLKIT_ROOT_DIR = "C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v12.9"

----- STEP 2: PREPARE WORKSPACE ------
Create C:\blender-git\
Download latest release of Streamline SDK https://github.com/NVIDIA-RTX/Streamline/releases and unzip to C:\blender-git\
Download and copy ninja.exe to C:\blender-git\tools https://github.com/ninja-build/ninja/releases

----- STEP 3: CLONE SOURCE CODE -----
cd C:\blender-git\
git clone https://projects.blender.org/pmoursnv/blender.git
cd .\blender\
git checkout dlss

----- STEP 4: EDIT CONFIGURATION -----
Edit configuration file: C:\blender-git\blender\build_files\cmake\config\blender_release.cmake

    ### Set ON For DLSS enable
    set(WITH_DLSS                   ON  CACHE BOOL "" FORCE)

    ### (optional - build time speedup) To build for only your GPU generation #only 30xx - sm_86;   40xx - sm_89; 50xx - sm_120
    ### refer to https://developer.nvidia.com/cuda/gpus
    set(CYCLES_CUDA_BINARIES_ARCH   "sm_86;sm_120;" CACHE STRING "" FORCE)

----------------->>>> here in blender_release.cmake-----------------------------
if(NOT APPLE)
  # Can't use CMAKE_SYSTEM_PROCESSOR here as it's not set yet,
  # so fall back to checking the env for vcvarsall's VSCMD_ARG_TGT_ARCH
  if(NOT (WIN32 AND "$ENV{VSCMD_ARG_TGT_ARCH}" STREQUAL "arm64"))
    set(WITH_TBB_MALLOC_PROXY       ON  CACHE BOOL "" FORCE)
    set(WITH_CYCLES_DEVICE_HIPRT    ON  CACHE BOOL "" FORCE)
    set(WITH_CYCLES_DEVICE_OPTIX    ON  CACHE BOOL "" FORCE)
    set(WITH_CYCLES_CUDA_BINARIES   ON  CACHE BOOL "" FORCE)
    set(WITH_CYCLES_HIP_BINARIES    ON  CACHE BOOL "" FORCE)
    set(WITH_CYCLES_DEVICE_ONEAPI   ON  CACHE BOOL "" FORCE)
    set(WITH_CYCLES_ONEAPI_BINARIES ON  CACHE BOOL "" FORCE)

    # >>>>>>> DLSS:
    set(WITH_DLSS                   ON  CACHE BOOL "" FORCE)

    # >>>>>>> only 30xx - sm_86;   40xx - sm_89; 50xx - sm_120
    set(CYCLES_CUDA_BINARIES_ARCH   "sm_86" CACHE STRING "" FORCE)

  endif()
---------------------------------------------------------------------------------

----- STEP 5: COMPILE -----
$env:PATH += ";C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin"
$env:PATH += ";C:\blender-git\tools"
$env:DLSS_SDK_ROOT = "C:\blender-git\streamline-sdk-v2.10.3\external\ngx-sdk"
$env:OPTIX_ROOT_DIR = "C:\ProgramData\NVIDIA Corporation\OptiX SDK 9.1.0"
.\make.bat update
.\make.bat release ninja

----- STEP 6: COPY DLSS LIBRARY -----
Copy C:\blender-git\streamline-sdk-v2.10.3\bin\x64\nvngx_dlssd.dll to C:\blender-git\build_windows_Release_x64_vc17_Release\bin
You can run:
Copy-Item "C:\blender-git\streamline-sdk-v2.10.3\bin\x64\nvngx_dlssd.dll" "C:\blender-git\build_windows_Release_x64_vc17_Release\bin\"

----- STEP 7: RUN AND TEST -----
Run blender C:\blender-git\build_windows_Release_x64_vc17_Release\bin\blender.exe