"Unimplemented GLSL.std.450 extended instruction" message doesn't tell which instruction is missing

[kpet]

This would make reporting these issues easier.

[jrprice]

Thanks for raising this. This is part of a wider issue, whereby the instruction printing routine assumes that all operands are result IDs (which is clearly wrong).

I'll try and address this soon. I was hoping that I could get SPIRV-Tools to do the heavy lifting here, but that might not quite be possible.