CS 40: OGL pixel buffers

Class startup

[~]$ cd ~/cs40/examples/
[examples]$ \cp -r ~adanner/public/cs40/examples/w13-stencil/ ./

Edit examples/CMakeLists.txt to add the w13-stencil subdirectory.

[~]$ cd ~/cs40/examples/build/
[build]$ make -j8
[build]$ cd w13-stencil
[w13-stencil]$ ./mirror