cmake DOPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK examples

PixarAnimationStudios/OpenSubdiv CMakeLists.txt :523 

add_definitions(
        -DOPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
    )

lighttransport/tinyusdz src/osd/CMakeLists.txt :501 

add_definitions(
        -DOPENSUBDIV_HAS_GLSL_TRANSFORM_FEEDBACK
    )