Morphological Filtering : how to disable in d3d11

Question

I want to disable Morphological Filtering in my application.

My computer use AMD Radeon r7 m260 display card.

My application that developed with c++ use skia and ANGLE. The ANGLE use d3d11.

When I enable Morphological Filtering, my application looks blurry.

I can disable Morphological Filtering with AMD setting ui, but I want to disable Morphological Filtering in my c++ code.

Do you have good methods.

Thank you!