Confusing subject title I know, because I'm confused.
I'm trying to get a bump map working correctly. It's a very fine grain pattern.
I'm finding if I leave the strength of the bump at 0.5 for example, I can increase/decrease the effect or how 'aggressive' it is just by adjusting the filter blur value. So I find myself constantly tweaking bump strength and filter blur to achieve the desired look. Admittedly the standard bump isn't great and I'm struggling to achieve what I want. If I make the bump to strong it just scatters the light so much that the whole object just gets brighter.
If I use the Corona Bitmap blur, it seems quite unpredicatable. I'm finding if I use the Corona Bitmap I have to increase the strength of the bump to get the same effect as not using the Corona Bitmap and a lower strength.
I'm going to render off some examples, but if anyone has a similar experiences or 'best practices' i'd be keen to hear them