{"record":{"id":"5d80b0a3e08c6f11","repo":"stride3d/stride","slug":"the-nameof-vertexelement-s-offset-and-size-makes-it-extend","errorCode":null,"errorMessage":"The {nameof(VertexElement)}'s offset and size makes it extend beyond the vertex stride","messagePattern":"The (.+?)'s offset and size makes it extend beyond the vertex stride","errorType":"exception","errorClass":"ArgumentException","httpStatus":null,"severity":"error","filePath":"sources/engine/Stride.Graphics/VertexElementValidator.cs","lineNumber":87,"sourceCode":"        for (int i = 0; i < overlapCheckArray.Length; i++)\n            overlapCheckArray[i] = -1;\n\n        int totalOffset = 0;\n        for (int elementIndex = 0; elementIndex < elements.Length; elementIndex++)\n        {\n            // Compute the offset for this element\n            int elementOffset = elements[elementIndex].AlignedByteOffset;\n            if (elementOffset == VertexElement.AppendAligned)\n            {\n                elementOffset = elementIndex == 0 ? 0 : totalOffset + elements[elementIndex - 1].Format.SizeInBytes;\n            }\n            totalOffset = elementOffset;\n\n            // Validate the element offset\n            int typeSize = elements[elementIndex].Format.SizeInBytes;\n            if (elementOffset == VertexElement.AppendAligned || (elementOffset + typeSize) > vertexStride)\n            {\n                throw new ArgumentException($\"The {nameof(VertexElement)}'s offset and size makes it extend beyond the vertex stride\", nameof(elements));\n            }\n            if ((elementOffset & 3) != 0)\n            {\n                throw new ArgumentException($\"The offset of the {nameof(VertexElement)} is not a multiple of 4 bytes\", nameof(elements));\n            }\n\n            // Check for duplicate semantic names and indices\n            for (int i = 0; i < elementIndex; i++)\n            {\n                if (elements[elementIndex].SemanticName.Equals(elements[i].SemanticName) &&\n                    elements[elementIndex].SemanticIndex == elements[i].SemanticIndex)\n                {\n                    throw new ArgumentException($\"Duplicate {nameof(VertexElement)}s found with the same semantic name and index\", nameof(elements));\n                }\n            }\n\n            // Check for overlap with existing elements\n            for (int i = elementOffset; i < (elementOffset + typeSize); i++)","sourceCodeStart":69,"sourceCodeEnd":105,"githubUrl":"https://github.com/stride3d/stride/blob/96fad776d210c221682aac1ccdf4c79dc046fc38/sources/engine/Stride.Graphics/VertexElementValidator.cs#L69-L105","documentation":"Validate checks each element's offset plus its format size in bytes against the declared vertex stride. An element whose offset equals AppendAligned (not resolved here) or whose byte range runs past the stride is rejected with ArgumentException.","triggerScenarios":"Declaring an element with a hardcoded offset such that offset + Format.SizeInBytes > vertexStride; shrinking the stride after changing an element format without adjusting offsets.","commonSituations":"Manually laid-out vertex declarations where a Vector4 element starts near the end of the stride; changing an element from R32G32 to R32G32B32A32 without moving subsequent offsets.","solutions":["Increase the vertex stride to accommodate the largest offset + size","Lower the element's offset so offset + Format.SizeInBytes <= vertexStride","Use the append-aligned mechanism if supported, or compute offsets sequentially from Format.SizeInBytes"],"exampleFix":"// before\n// stride = 16, element offset = 12, format R32G32B32A32 (16 bytes) => 28 > 16\n// after\n// stride = 32, or offset = 0 with 16-byte stride","handlingStrategy":"validation","validationCode":"bool FitsInStride(VertexElement e, int offset, int stride) =>\n    offset != VertexElement.AppendAligned && offset + e.Format.SizeInBytes <= stride;","typeGuard":null,"tryCatchPattern":"try { VertexElementValidator.Validate(stride, elements); } catch (ArgumentException) { growStrideOrFixOffsets(); }","preventionTips":["Recompute offsets whenever an element format changes size","Keep stride >= sum of all element sizes","Use sequential offset accumulation instead of hardcoding offsets"],"tags":["graphics","vertex-declaration","offset","layout"],"backgroundTag":"invalid-argument-value","analyzedSha":"96fad776d210c221682aac1ccdf4c79dc046fc38","analyzedAt":"2026-09-14T02:59:31.279Z","contentChangedAt":"2026-09-14T02:59:31.279Z","schemaVersion":2},"datasetVersion":"2026-09-23T08:17:48.524Z"}