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{ "revision" : 4, "instructions" : [ { "opname" : "InterpolateAtVertexAMD", "opcode" : 1, "operands" : [ { "kind" : "IdRef", "name" : "'interpolant'" }, { "kind" : "IdRef", "name" : "'vertexIdx'" } ], "extensions" : [ "SPV_AMD_shader_explicit_vertex_parameter" ] } ] }