Build shaders using glslangValidator
This avoids having to have precompiled SPIRV in the source tree.
Tested locally by rebasing onto !69 (merged) and using the new ...-check-vulkan --visible to check that the same triangle gets displayed.
This avoids having to have precompiled SPIRV in the source tree.
Tested locally by rebasing onto !69 (merged) and using the new ...-check-vulkan --visible to check that the same triangle gets displayed.