Why are Material green when Pixel shader to convert a NV12 BytesData to RGBA?

Development Programming & Scripting C++
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//NV12 BytesData

3D767DB7-6074-4ab9-8DCF-D40168CD71DD
3D767DB7-6074-4ab9-8DCF-D40168CD71DD852×485 61 KB

//NV12 FRHITexture2D Obj
004C94D4-0B6D-4c71-99D5-6384EAAFDF8C
004C94D4-0B6D-4c71-99D5-6384EAAFDF8C1233×98 15.6 KB

//FNV12ConvertAsBytesPS
C68B5765-FF31-4574-942D-000840AAA103
C68B5765-FF31-4574-942D-000840AAA1031400×337 54.2 KB

4BA60D18-CF12-46e9-BE09-DD8037661681
4BA60D18-CF12-46e9-BE09-DD8037661681926×460 338 KB