message: D3D12: Add back flip_vert_y.
  This fixes the InputStateTests and PrimitiveTopologyTests
diff: @@ -24,6 +24,7 @@ namespace backend { namespace d3d12 {
  spirv_cross::CompilerGLSL::Options options_glsl;
  options_glsl.vertex.fixup_clipspace = true;
  + options_glsl.vertex.flip_vert_y = true;
  compiler.spirv_cross::CompilerGLSL::set_options(options_glsl);
  spirv_cross::CompilerHLSL::Options options_hlsl;
  