The following are the effects of the two solutions I have tried Option A: Use nanite mesh+lumen+hardware light tracing As shown in the figure : The shadow calculated by hardware light tracing is based on Nanite fallback mesh Option B: Use nanite mesh+lumen+distance field of mesh As shown in the figure: The red box shows the shadow before the wpo of some triangular faces, while the blue box shows the shadow after the wpo of some triangular faces I want the shadow to match the mesh after

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