{"record":{"id":"e50f022aa9da64bf","repo":"stride3d/stride","slug":"trying-to-serialize-a-buffer-without-cpu-info","errorCode":null,"errorMessage":"Trying to serialize a Buffer without CPU info.","messagePattern":"Trying to serialize a Buffer without CPU info\\.","errorType":"exception","errorClass":"InvalidOperationException","httpStatus":null,"severity":"error","filePath":"sources/engine/Stride.Graphics/Data/BufferSerializer.cs","lineNumber":74,"sourceCode":"                            var loadedBufferData = assetManager.Load<Buffer>(url);\n                            try\n                            {\n                                var data = loadedBufferData.GetSerializationData().Content;\n                                ((Buffer)graphicsResource).Recreate(data);\n                            }\n                            finally\n                            {\n                                assetManager.Unload(loadedBufferData);\n                            }\n                        };\n                    }\n                }\n            }\n            else\n            {\n                var bufferData = buffer.GetSerializationData();\n                if (bufferData == null)\n                    throw new InvalidOperationException(\"Trying to serialize a Buffer without CPU info.\");\n\n                stream.Write(bufferData);\n            }\n        }\n    }\n}\n","sourceCodeStart":56,"sourceCodeEnd":81,"githubUrl":"https://github.com/stride3d/stride/blob/96fad776d210c221682aac1ccdf4c79dc046fc38/sources/engine/Stride.Graphics/Data/BufferSerializer.cs#L56-L81","documentation":"BufferSerializer.Serialize can only write a Buffer's raw data when the buffer carries CPU-accessible serialization info (BufferSerializationData via GetSerializationData). Buffers created without that CPU info (e.g. GPU-only Default-usage buffers) cannot be dumped to the stream, so Serialize throws InvalidOperationException.","triggerScenarios":"Serializing/packaging a scene or asset whose buffer was created without CPU-side data (not Staging/managed serialization-friendly flags), so GetSerializationData() returns null.","commonSituations":"Saving a runtime-generated GPU buffer into an asset bundle; serializing a mesh whose vertex buffer was uploaded as Default usage and discarded from CPU memory.","solutions":["Ensure the buffer keeps CPU data (create from CPU data / keep serialization data) before serialization.","Re-upload the data from the CPU source and re-create the buffer with serialization info.","Skip serializing GPU-only buffers, or store a recipe to regenerate them at load time."],"exampleFix":"// before\nvar gpuOnly = Buffer.New(device, 1024, BufferFlags.VertexBuffer, GraphicsResourceUsage.Default);\nserializer.Serialize(stream, gpuOnly); // throws\n// after\nvar withData = Buffer.New(device, cpuData, BufferFlags.VertexBuffer); // keeps CPU info\nserializer.Serialize(stream, withData);","handlingStrategy":"try-catch","validationCode":"if (buffer.GetSerializationData() == null)\n    throw new InvalidOperationException(\"Buffer has no CPU data to serialize\");","typeGuard":"bool CanSerialize(Buffer b) => b.GetSerializationData() != null;","tryCatchPattern":"try { serializer.Serialize(stream, buffer); }\ncatch (InvalidOperationException ex) when (ex.Message.Contains(\"without CPU info\"))\n{\n    // regenerate from CPU source instead of serializing GPU-only buffer\n}","preventionTips":["Create buffers from CPU data when they must be serialized.","Keep serialization metadata attached to runtime buffers.","Store generation recipes for GPU-only buffers."],"tags":["graphics","serialization","buffer","invalid-state"],"backgroundTag":"invalid-state-transition","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"}