{"record":{"id":"bb3d9f23820af737","repo":"stride3d/stride","slug":"cannot-find-type-instruction-for-id","errorCode":null,"errorMessage":"Cannot find type instruction for id ","messagePattern":"Cannot find type instruction for id ","errorType":"exception","errorClass":"Exception","httpStatus":null,"severity":"error","filePath":"sources/shaders/Stride.Shaders.Parsers/Spirv/Building/Context.Constants.cs","lineNumber":243,"sourceCode":"                return true;\n            }\n            else if (typeInst.Op == Specification.Op.OpTypeFloat)\n            {\n                var type = new OpTypeFloat(typeInst);\n                value = type switch\n                {\n                    { Width: 16 } => operand.ToLiteral<Half>(),\n                    { Width: 32 } => operand.ToLiteral<float>(),\n                    { Width: 64 } => operand.ToLiteral<double>(),\n                    _ => throw new NotImplementedException($\"Unsupported float width {type.Width}\"),\n                };\n                return true;\n            }\n            else\n                throw new NotImplementedException($\"Unsupported context dependent number with type {typeInst.Op}\");\n        }\n\n        throw new Exception(\"Cannot find type instruction for id \" + typeId);\n    }\n\n    public SpirvValue CreateDefaultConstantComposite(SymbolType type)\n    {\n        // TODO: cache results (either here or even more generally for any composite constant even if non-zero)\n        return new(Buffer.AddData(new OpConstantNull(GetOrRegister(type), Bound++)));\n    }\n\n    public SpirvValue CreateConstantCompositeVectorRepeat(Literal literal, int size)\n    {\n        var value = CompileConstantLiteral(literal);\n        if (size == 1)\n            return value;\n\n        var type = new VectorType((ScalarType)ReverseTypes[value.TypeId], size);\n        return CreateConstantCompositeRepeat(type, value, size);\n    }\n","sourceCodeStart":225,"sourceCodeEnd":261,"githubUrl":"https://github.com/stride3d/stride/blob/96fad776d210c221682aac1ccdf4c79dc046fc38/sources/shaders/Stride.Shaders.Parsers/Spirv/Building/Context.Constants.cs#L225-L261","documentation":"TryGetConstantValue looks up the type instruction for a constant's Result Type id via Buffer.TryGetInstructionById. If no instruction with that id exists in the buffer, it throws a plain Exception 'Cannot find type instruction for id <typeId>'. This indicates a broken or partially-loaded SPIR-V module where a type definition is missing.","triggerScenarios":"Parsing a truncated or malformed SPIR-V binary where OpTypeInt/OpTypeFloat defining the referenced type id was never added to the buffer; a parser ordering bug where constants are evaluated before their type instructions are registered; an invalid type id in the constant instruction.","commonSituations":"Corrupted shader files (truncated .spv); custom module loaders that skip or reorder type-definition sections; manually assembled SPIR-V with dangling type references; version mismatches between the producer and this parser.","solutions":["Verify the SPIR-V binary is complete and valid (run spirv-val on the file); re-export or recompile the shader if corrupted","Ensure all type-definition instructions are registered in the Buffer before constants are evaluated (check parsing order in the SPIR-V loader)","Dump typeId at the throw site and confirm the module actually contains an instruction with that result id — if not, the binary or loader is at fault"],"exampleFix":"// before\nthrow new Exception(\"Cannot find type instruction for id \" + typeId);\n// after\nif (!Buffer.TryGetInstructionById(typeId, out var typeInst))\n    throw new InvalidDataException($\"SPIR-V module is missing type instruction for id {typeId}; file may be truncated or malformed\");","handlingStrategy":"validation","validationCode":"// verify the type id referenced by a constant exists before evaluation\nbool TypeInstructionExists(SpirvBuffer buffer, Instruction constant)\n    => buffer.TryGetInstructionById(constant.Data.Memory.Span[1], out _);","typeGuard":null,"tryCatchPattern":"try\n{\n    context.TryGetConstantValue(id, out var value, out var typeId);\n}\ncatch (Exception ex) when (ex.Message.StartsWith(\"Cannot find type instruction for id \"))\n{\n    // module is truncated/malformed: report and fall back to a re-imported valid module\n    ReportCorruptModule(ex.Message);\n}","preventionTips":["Run spirv-val on .spv files before parsing","Check file integrity (hash/size) of shader binaries shipped with the app","Ensure all type-definition instructions are loaded into the Buffer before constant evaluation","Re-export shaders from a known-good toolchain version"],"tags":["spirv","missing-instruction","malformed-module","shader-compilation"],"backgroundTag":"resource-not-found","analyzedSha":"96fad776d210c221682aac1ccdf4c79dc046fc38","analyzedAt":"2026-09-14T02:59:31.279Z","contentChangedAt":"2026-09-14T02:59:31.279Z","schemaVersion":2},"datasetVersion":"2026-09-15T23:17:13.987Z"}