LCD text appears coarser in OpenGL compared to Metal in J2DBench

After fixing JDK-8243953 i ran J2DBench text rendering options from JDK-8242021 and noticed that there is visible difference between text rendered in Metal compared to OpenGL in my 10.15.4 retina display machine. In case of OpenGL it looks coarser and in case of Metal it actually looks better. Need to check whether this difference is okay or not. There is no visible difference in Font2DTest/RenderPerfTest.

So i backtracked changed to find whether this is a regression or not, but it looks like this issue is there from starting of LCD algorithm implementation.

Attached image for both lcd_small and lcd_large J2DBench options.