Rendering toolkit oidn code sample PR

RenderingToolkit/GettingStarted/04_oidn_gsg/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.16)
+project(OIDN_GSG LANGUAGES C CXX)
+
+set(ONEAPI_ROOT "")
+if(DEFINED ENV{ONEAPI_ROOT})
+  set(ONEAPI_ROOT "$ENV{ONEAPI_ROOT}")
+  message(STATUS "ONEAPI_ROOT FROM ENVIRONMENT: ${ONEAPI_ROOT}")
+else()
+  if(WIN32)
+    set(ONEAPI_ROOT "C:/Program Files (x86)/Intel/oneAPI")
+  else()
+    set(ONEAPI_ROOT /opt/intel/oneapi)
+  endif()
+  message(STATUS "ONEAPI_ROOT DEFAULT: ${ONEAPI_ROOT}")
+endif(DEFINED ENV{ONEAPI_ROOT})
+set(OIDN_ROOT ${ONEAPI_ROOT}/oidn/latest)
+set(OIDN_INCLUDE_DIR ${OIDN_ROOT}/include)
+set(OIDN_LIB_DIR ${OIDN_ROOT}/lib)
+
+find_package(OpenImageDenoise REQUIRED PATHS ${ONEAPI_ROOT})
+find_package(TBB REQUIRED PATHS ${ONEAPI_ROOT})
+
+if(MSVC)
+  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+  set(CMAKE_CXX_EXTENSIONS OFF)
+else()
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
+endif(MSVC)
+
+add_subdirectory(src/common)
+add_subdirectory(src/apps/utils)
+
+include_directories(${OIDN_INCLUDE_DIR} ${OIDN_ROOT} ${OIDN_GSG_SOURCE_DIR}/src)
+link_directories(${OIDN_ROOT}/lib)
+
+add_executable(oidnDenoise src/apps/oidnDenoise.cpp)
+target_link_libraries(oidnDenoise PRIVATE common utils OpenImageDenoise)
+
+install(TARGETS oidnDenoise
+  DESTINATION ${CMAKE_INSTALL_BINDIR}
+)

RenderingToolkit/GettingStarted/04_oidn_gsg/LICENSE.txt

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RenderingToolkit/GettingStarted/04_oidn_gsg/README.md

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+# Getting Started Sample for Intel oneAPI Rendering Toolkit: Intel Open Image Denoise
+
+
+Intel Open Image Denoise is an open source library of high-performance, high-quality, denoising filters for images rendered with ray tracing. Significantly reduce rendering times in ray tracing based rendering applications.
+
+| Minimum Requirements              | Description
+|:---                               |:---
+| OS                                | Linux* Ubuntu* 18.04, CentOS 8 (or compatible); Windows 10; MacOS 10.15+
+| Hardware                          | Intel 64 Penryn or newer with SSE4.1 extensions, ARM64 with NEON extensions
+| Compiler Toolchain                | Windows* OS: MSVS 2019 installed with Windows* SDK and CMake*; Other platforms: C++11 compiler, a C99 compiler (ex: gcc/c++/clang), and CMake*
+| Libraries                         | Install Intel oneAPI Rendering Toolkit including OSPRay, Embree, Open Volume Kernel Library, Intel Open Image Denoise
+| Image Display Tool                | A .ppm filetype viewer. Ex: [ImageMagick](https://www.imagemagick.org)
+| Image Conversion Tool             | A converter for .ppm, .pfm, and endian conversions. Ex: [ImageMagick](https://www.imagemagick.org)
+
+| Optimized Requirements            | Description
+| :---                              | :---
+| Hardware                          | Intel 64 Skylake or newer with AVX512 extentions, ARM64 with NEON extensions
+
+| Objective                         | Description
+|:---                               |:---
+| What you will learn               | How to build and run a basic rendering program using the Open Image Denoise API from the Render Kit.
+| Time to complete                  | 5 minutes
+
+
+## Purpose
+
+This getting started sample program, `oidnDenoise`, denoises a raytraced image. The output is written to disk as a .pfm image file.
+
+
+## Key Implementation Details
+
+- The program input is a noisy image. In this example, the `accumulatedFrameCpp` image is used for input. Recall, this image was originally generated from the Intel OSPRay getting started sample, `ospTutorial`. 
+- The program writes a denoised .pfm image file to disk.
+- Of course, oidnDenoise can denoise other, user-provided noisy input images. Along with the input image, the program can take in albedo and normal buffers corresponding to the same pixels of the input image. Inclusion of such auxialiary feature images can significantly improve denoising quality. See 
+- The Intel OSPRay Studio showcase application demonstrates in-source denoising with the Intel OSPRay library. The noisy image buffer and auxiliary buffers are readily emitted from the OSPRay API. All buffers are fed through the denoiser for a higher quality interactive experience.
+
+## License
+
+This code sample is licensed under the Apache 2.0 license. See
+[LICENSE.txt](LICENSE.txt) for details.
+
+Third party program Licenses can be found here: [third-party-programs.txt](https://github.com/oneapi-src/oneAPI-samples/blob/master/third-party-programs.txt)
+
+## Build and Run
+
+First, build and run the sample Intel OSPRay getting started sample, `ospTutorial`, to generate input. Find it in the [01_ospray_gsg](../01_ospray_gsg) folder of this samples repository.
+
+### Windows OS:
+
+
+Run a new **x64 Native Tools Command Prompt for MSVS 2019**
+
+```
+call <path-to-oneapi-folder>\setvars.bat
+cd <path-to-oneAPI-samples>\RenderingToolkit\GettingStarted\04_oidn_gsg
+mkdir build
+cd build
+cmake ..
+cmake --build . --config Release
+cd Release
+```
+
+Convert the accumulatedFrameCpp.ppm image to LSB data ordering and .pfm format. Example conversion with ImageMagick convert:
+
+```
+<path-to-ImageMagick>\magick.exe convert <path-to-gsg>\01_ospray_gsg\build\Release\accumulatedFrameCpp.ppm -endian LSB PFM:accumulatedFrameCpp.pfm
+```
+
+Denoise the image:
+
+```
+oidnDenoise.exe -hdr accumulatedFrameCpp.pfm -o denoised.pfm
+```
+
+Review the output for visual comparison to the input. Example view with ImageMagick display:
+
+```
+<path-to-ImageMagick>\imdisplay.exe denoised.pfm
+```
+
+### Linux OS:
+
+Start a new Terminal session
+```
+source <path-to-oneapi-folder>/setvars.sh
+cd <path-to-oneAPI-samples>/RenderingToolkit/GettingStarted/04_oidn_gsg
+mkdir build
+cd build
+cmake ..
+cmake --build .
+```
+
+Convert the accumulatedFrameCpp.ppm image to LSB data ordering and .pfm format. Example conversion with ImageMagick convert:
+```
+<path-to-ImageMagick>/convert-im6 <path-to-gsg>/01_ospray_gsg/build/accumulatedFrameCpp.ppm -endian LSB PFM:accumulatedFrameCpp.pfm
+```
+
+Denoise the image:
+
+```
+./oidnDenoise -hdr accumulatedFrameCpp.pfm -o denoised.pfm
+```
+
+Review the output for visual comparison to the input. Example view with ImageMagick display:
+
+```
+<path-to-ImageMagick>/display-im6 denoised.pfm
+```
+
+
+
+### MacOS:
+
+Start a new Terminal session
+
+```
+source <path-to-oneapi-folder>/setvars.sh
+cd <path-to-oneAPI-samples>/RenderingToolkit/GettingStarted/04_oidn_gsg
+mkdir build
+cd build
+cmake ..
+cmake --build .
+```
+
+Convert the accumulatedFrameCpp.ppm image to LSB data ordering and .pfm format. Example conversion with ImageMagick convert:
+```
+<path-to-ImageMagick>/magick convert <path-to-gsg>/01_ospray_gsg/build/accumulatedFrameCpp.ppm -endian LSB PFM:accumulatedFrameCpp.pfm
+```
+
+Denoise the image:
+
+```
+./oidnDenoise -hdr accumulatedFrameCpp.pfm -o denoised.pfm
+```
+
+Review the output for visual comparison to the input. Example view with ImageMagick display:
+
+```
+<path-to-ImageMagick>/imdisplay denoised.pfm
+```