I have this Grid (400x400) (row 300 and col 300). I added 'attribute noise' with default setting and set Amplitude to 100 and element size to 400. This is the output :



But when I set the 'offset' to very high number such as 100000, then the shading starts to break :



I think this 'offset' parameter should only control the offset of the noise not affecting the roughness at all. Why did I got this output ?

that large of an offset causes the noise space to run out of numbers due to catastrophic loss of precision. 32 bits only gives about 6 or 7 decimal places of precision, so adding a 7 digit number leaves you with 0 decimal places to work with.

jsmack
that large of an offset causes the noise space to run out of numbers due to catastrophic loss of precision. 32 bits only gives about 6 or 7 decimal places of precision, so adding a 7 digit number leaves you with 0 decimal places to work with.

Thanks for the explanation.