{"record":{"id":"352159c7df16520d","repo":"MonoGame/MonoGame","slug":"the-vertex-stride-is-larger-than-the-vertex-buffer","errorCode":null,"errorMessage":"The vertex stride is larger than the vertex buffer.","messagePattern":"The vertex stride is larger than the vertex buffer\\.","errorType":"exception","errorClass":"InvalidOperationException","httpStatus":null,"severity":"error","filePath":"MonoGame.Framework/Graphics/Vertices/VertexBuffer.cs","lineNumber":262,"sourceCode":"        protected void SetDataInternal<T>(int offsetInBytes, T[] data, int startIndex, int elementCount, int vertexStride, SetDataOptions options) where T : struct\n        {\n            if (data == null)\n                throw new ArgumentNullException(\"data\");\n\n            var elementSizeInBytes = ReflectionHelpers.FastSizeOf<T>();\n            var bufferSize = VertexCount * VertexDeclaration.VertexStride;\n\n            if (vertexStride == 0)\n                vertexStride = elementSizeInBytes;\n\n            var vertexByteSize = VertexCount * VertexDeclaration.VertexStride;\n            if (vertexStride > vertexByteSize)\n                throw new ArgumentOutOfRangeException(\"vertexStride\", \"Vertex stride can not be larger than the vertex buffer size.\");\n\n            if (startIndex + elementCount > data.Length || elementCount <= 0)\n                throw new ArgumentOutOfRangeException(\"data\",\"The array specified in the data parameter is not the correct size for the amount of data requested.\");\n            if (elementCount > 1 && (elementCount * vertexStride > bufferSize))\n                throw new InvalidOperationException(\"The vertex stride is larger than the vertex buffer.\");\n            if (vertexStride < elementSizeInBytes)\n                throw new ArgumentOutOfRangeException(\"The vertex stride must be greater than or equal to the size of the specified data (\" + elementSizeInBytes + \").\");\n\n            PlatformSetData<T>(offsetInBytes, data, startIndex, elementCount, vertexStride, options, bufferSize, elementSizeInBytes);\n        }\n\n#if NATIVE\n        /// <summary>\n        /// Sets the vertex buffer data, uses a Span including only relevant data to be copied rather than the full source array,\n        /// and the first index in the buffer to start copying to. Assumes the full Span will be copied with no padding between elements.\n        /// </summary>\n        /// <typeparam name=\"T\">Type of elements in the data Span.</typeparam>\n        /// <param name=\"destinationStartIndex\">The first index in the destination buffer you want to copy data to</param>\n        /// <param name=\"data\">Data array to be passed to the shader as a Span.</param>\n        /// elementCount will be inferred to be the number of elements in <paramref name=\"data\"/>\n        /// since the Span should only contain the relevant data to be copied.\n        /// <remarks>\n        /// If <c>T</c> is <see cref=\"VertexPositionTexture\"/>, and you want to only update the first 10 elements of your array of","sourceCodeStart":244,"sourceCodeEnd":280,"githubUrl":"https://github.com/MonoGame/MonoGame/blob/1d71bbd0ff4071a03caa583aa3bc56b85924a819/MonoGame.Framework/Graphics/Vertices/VertexBuffer.cs#L244-L280","documentation":"Thrown by SetDataInternal when elementCount > 1 and elementCount * vertexStride exceeds bufferSize (the total buffer byte capacity). The upload would overflow the GPU buffer. This is an InvalidOperationException because individual params are valid but their product exceeds capacity.","triggerScenarios":"Uploading more elements than the buffer was allocated for (VertexCount), or using a stride that, multiplied by the count, exceeds VertexCount * VertexDeclaration.VertexStride.","commonSituations":"Buffer allocated for N vertices but attempting to upload M>N, or a stale VertexCount after the mesh changed. Also when vertexStride defaults to element size but elementCount is too large.","solutions":["Ensure elementCount <= VertexCount (when stride equals the vertex size).","If using a custom stride, ensure elementCount * vertexStride <= VertexCount * VertexDeclaration.VertexStride.","Recreate the buffer with a larger VertexCount if you need to store more vertices."],"exampleFix":"// before\nvar vb = new VertexBuffer(gd, decl, 256, usage);\nvb.SetData(verts1000); // 1000 verts into 256-capacity buffer\n// after\nvar vb = new VertexBuffer(gd, decl, verts1000.Length, usage);\nvb.SetData(verts1000);","handlingStrategy":"validation","validationCode":"if (elementCount > 1 && (long)elementCount * vertexStride > vertexBuffer.VertexCount * vertexBuffer.VertexDeclaration.VertexStride)\n    throw new InvalidOperationException(\"SetData would overflow the vertex buffer.\");","typeGuard":"static bool UploadFits(VertexBuffer vb, int elementCount, int vertexStride)\n    => elementCount <= 1 || (long)elementCount * vertexStride <= (long)vb.VertexCount * vb.VertexDeclaration.VertexStride;","tryCatchPattern":"try { vertexBuffer.SetData(0, data, 0, elementCount, vertexStride); }\ncatch (InvalidOperationException ex) when (ex.Message.Contains(\"vertex buffer\"))\n{ /* recreate buffer larger or reduce count */ }","preventionTips":["Allocate the buffer with VertexCount >= data.Length.","Recreate buffers when meshes grow.","Derive capacity from the largest expected upload."],"tags":["vertexbuffer","setdata","buffer-overflow","monogame","graphics"],"backgroundTag":null,"analyzedSha":"1d71bbd0ff4071a03caa583aa3bc56b85924a819","analyzedAt":"2026-08-13T17:10:33.625Z","schemaVersion":2},"datasetVersion":"2026-08-13T19:17:28.613Z"}