cmake Ptex examples

szellmann/visionaray src/common/CMakeLists.txt :95 

find_package(Ptex)

lighttransport/tinyusdz src/osd/CMakeLists.txt :362 

find_package(PTex 2.0)

PixarAnimationStudios/OpenUSD cmake/defaults/Packages.cmake :251 

find_package(PTex REQUIRED)