问在cpu端有读取片段着色器常量值的方法吗？

EN

typedef struct {
  uint width;
  uint height;
  uint tiling;
  uint lightCount;
  vector_float3 cameraPosition;
  uint objectId;
  uint touchX;
  uint touchY;
} Params;

//this struct sent to fragment shader by
encoder.setFragmentBytes(&params, length: MemoryLayout<Params>.stride, index:
ParamsBuffer.index)

//end hit test in fragment shader like this

fragment float4 fragment_main(constant Params &params [[buffer(ParamsBuffer)]],
//...


  if(params.objectId != 0 && objectID == params.objectId) {
            material.baseColor = float3(0.9, 0.5, 0);
            
        }

print(params.objectId)