On 5/24/19 8:59 PM, Alain wrote:
> Le 19-05-24 à 08:39, William F Pokorny a écrit :
...
>>
>> If the normals are so small at the scene scale they cannot be seen, it 
>> makes sense compute resource wise to remove them no matter. In a 
>> strange way, seeing the black artifacts was an indication texture 
>> normals too small existed and we no longer have this in v38.
>>
> 
> The normals can be very small intentionally. If you want some blurred 
> reflection, or refraction, one common way is to use normals deliberately 
> scaled very small and use anti-aliasing.
> 
> In this case, you really don't want to have them removed as your 
> object's appearance depends on those micro-normals.
> 

Good point. What is meaningful with respect to texture normals depends 
on the textures involved. Radiosity has its own dependencies when 
normals are on/respected. The situation as a whole is complex. Further, 
I both do not understand significant portions of the normal handling 
code and know too with respect to warps there is code which looks to be 
unfinished.

Norbert's problem normals were tangled in turbulence of some kind as I 
vaguely remember.

Bill P.

Post a reply to this message