WebAssembly + WebGL = Native OpenGL ES 3.0 called by C/C++ on Web

Directory Structure

testc : The testing C program which invokes OpenGL ES 3.0 APIs to render something.
testwww : A simple webroot for testing.
testhost.py : A script that runs a HTTP server on port 8000, using testwww as webroot.
compile.py and recompile.py : These scripts invokes makefile to run compilation and copy the generated program.wasm into webroot directory.

python3 : To run the scripts.
clang and wasm-ld : The compiler and the linker to generate.
makefile : Normal GNU make. Should work with clang (that means it should know .c => .o).
Non-IE browser : Should be able to run WebAssembly programs.