This example project uses renderscript through NDK/C++ with CMake as the build system.
In order to make android studio not complain gradle sync, run ./gradlew installRelease and ./gradlew installDebug from the terminal, so that ScripC_compute.cpp and ScriptC_compute.h files are generated first.
This setup is able to reproduce a problem with renderscript support mode described here.
As it is, call to renderscript will fail at runtime, since renderscriptTargetApi set as 24 does not generate librs.compute.so. It is generated if renderscriptTargetApi is 19 or 20 limiting us to older APIs.