Hi guys,
I was testing one of my latest scenes, and i did use the latest legacy daily build in dropbox, i’ve found a new bug in the floor’s bump i didn’t understand but here are some renders to explain :
No Bump :
Bump 0.1
Bump 0.05
I don’t know if it is some weird reflection distance or something else…
I’ve found also that using other bump textures do produce this bug when i increase the bump value juste a little bit.
By this 0.1 and 0.05 you mean bump strength or bitmap’s blur?
Where is your light source and what is it?
Bump strength, the bump blur is 0.2
i use hdri map + 1 rectangular corona light
And what happens if you set blur to 1.0?
Can give the scene?
Looks kinda like the good old excessive bump bug. Can you give me the scene?
I’ll prepare the scene very soon.
i did test the value 1 for bump Blur and it doesn’t help the same bug is here.
Here is the scene :
Here bump = 0.03, blur=0.2. Looks very good!
try 0.05 ! it’s not normal.
You may set “Max normal dfference” to 0.1 and use bump = 0.1.
But for the bump while there are some limitations in the upper limit of value.
It seems that MAx normal difference 0.1 works here
but i don’t understand how to configure it depending on the value of the bump, is it a work around for a bug or a correct way or what?
bump gives really strange results…
Ok, I’ve fixed a probable cause for this bug and now I cannot reproduce your problem. Seems fixed 
Nice thanks Ondra, would be great if possible a legacy update.