Tried Linux build on RX480, Intel HD530(Skylake) and Geforce GT710, Windows build with RX480 only. Crash on startup with everything but the GT710 (which isn't powerful enough to run this game above single-digit framerates, so I didn't play any further).
GL Vendor : X.Org
GL Renderer : AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM 3.26.0, 4.18.16-arch1-1-ARCH, LLVM 7.0.0)
GL Version (string) : 4.5 (Core Profile) Mesa 18.2.4
GL Version (integer) : 4.5
GLSL Version : 4.50
Log found for 'quad':
0:1(1): error: #extension directive is not allowed in the middle of a shader
quad -> vertex shader!