Maybe it should be tested on a 64bit system first?
I cannot find any info on how to programmatically check shader level
support from the GPU: is Angle limited to pixelshader2, vertexshader2 and
the shaders fail on every Angle system, or would it compile vs_3, ps_3 if
the graphics card supports this, i.e., does the startup message on a
capable system mention vs_3/ps_3 support?