[LayaAir 2.0]设置雾化导致unity卡死

Shader error in 'LayaAir3D/Mesh/PBRStandardMaterial': undeclared identifier '_unity_fogCoord' at Assets/LayaAir3D/LayaShader/CGIncludes/LayaStandardcore.cginc(196) (on d3d11)

Compiling Vertex program with UNITY_PASS_FORWARDBASE DIRECTIONAL LIGHTPROBE_SH FOG_LINEAR
Platform defines: UNITY_ENABLE_REFLECTION_BUFFERS UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BOX_PROJECTION UNITY_SPECCUBE_BLENDING UNITY_ENABLE_DETAIL_NORMALMAP SHADER_API_DESKTOP UNITY_COLORSPACE_GAMMA UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_LIGHTMAP_FULL_HDR
 
unity里面设置雾化后，再次打开unity工程的时候会卡死