unity runtime_error ai_generated true

ArgumentException: Buffer 'MyBuffer' has been declared as a structured buffer in the shader, but the C# script is binding a different type (ComputeBuffer or GraphicsBuffer)

ID: unity/graphics-buffer-mismatch

Also available as: JSON · Markdown · 中文
85%Fix Rate
88%Confidence
1Evidence
2023-11-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Unity 2022.3 active — — —
Unity 2023.1 active — — —
Unity 6.0 active — — —

Root Cause

Mismatch between the buffer type declared in the HLSL shader (e.g., StructuredBuffer) and the buffer type created in C# (e.g., ComputeBuffer with wrong stride or GraphicsBuffer with wrong target).

generic

中文

HLSL着色器中声明的缓冲区类型（例如StructuredBuffer）与C#中创建的缓冲区类型（例如ComputeBuffer步幅错误或GraphicsBuffer目标错误）不匹配。

Official Documentation

https://docs.unity3d.com/Manual/compute-shaders.html

Workarounds

  1. 90% success Ensure the C# ComputeBuffer stride equals the size of the struct used in the shader. For a float3 buffer, stride = 12 bytes. Example: ComputeBuffer buffer = new ComputeBuffer(count, sizeof(float) * 3); shader.SetBuffer(kernel, "MyBuffer", buffer); 
    Ensure the C# ComputeBuffer stride equals the size of the struct used in the shader. For a float3 buffer, stride = 12 bytes. Example: ComputeBuffer buffer = new ComputeBuffer(count, sizeof(float) * 3); shader.SetBuffer(kernel, "MyBuffer", buffer);
  2. 85% success If using GraphicsBuffer, set the correct target (e.g., GraphicsBuffer.Target.Structured). Example: GraphicsBuffer gfxBuffer = new GraphicsBuffer(GraphicsBuffer.Target.Structured, count, stride); 
    If using GraphicsBuffer, set the correct target (e.g., GraphicsBuffer.Target.Structured). Example: GraphicsBuffer gfxBuffer = new GraphicsBuffer(GraphicsBuffer.Target.Structured, count, stride);

中文步骤

  1. Ensure the C# ComputeBuffer stride equals the size of the struct used in the shader. For a float3 buffer, stride = 12 bytes. Example: ComputeBuffer buffer = new ComputeBuffer(count, sizeof(float) * 3); shader.SetBuffer(kernel, "MyBuffer", buffer);
  2. If using GraphicsBuffer, set the correct target (e.g., GraphicsBuffer.Target.Structured). Example: GraphicsBuffer gfxBuffer = new GraphicsBuffer(GraphicsBuffer.Target.Structured, count, stride);

Dead Ends

Common approaches that don't work:

  1. 60% fail

    Increasing the buffer size does not fix type mismatch; the issue is stride or target, not capacity.

  2. 30% fail

    Switching to a different shader variant does not change the buffer declaration mismatch.