option(PBRT_NVTX "Insert NVTX annotations for NVIDIA Profiling and Debugging Tools" OFF)
option(PBRT_NVML "Use NVML for GPU performance measurement" OFF)
option(PBRT_USE_PREGENERATED_RGB_TO_SPECTRUM_TABLES "Use pregenerated rgbspectrum_*.cpp files rather than running rgb2spec_opt to generate them at build time" OFF)
set(PBRT_OPTIX7_PATH "" CACHE PATH "Path to OptiX 7 SDK")
set(PBRT_OPTIX7_PATH $ENV{PBRT_OPTIX7_PATH} CACHE PATH "Path to OptiX 7 SDK")
set(PBRT_GPU_SHADER_MODEL "" CACHE STRING "")
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)