The BRAWL² Tournament Challenge has been announced!
It starts May 12, and ends Sept 12. Let's see what you got!
https://polycount.com/discussion/237047/the-brawl²-tournament
It starts May 12, and ends Sept 12. Let's see what you got!
https://polycount.com/discussion/237047/the-brawl²-tournament
Blender, Normal Mapping Artifacts, SuperPNG
polycounter lvl 6
Hello everyone, I've been struggling since yesterday with a problem related to normal maps, and visual artifacts.
To keep things short:
I applied some normal maps to my geometry, funky stuff started happening, visual artifacts, visible banding of the geometry, visible seams of the normal textures.
Tried different approaches and setting.
-Applied Scale / Scale is set.
-Smooth shading is enabled.
-UV Islands are flat.
-No extra Attributes are applied to the mesh (No custom normals or the like)
-Textures are Linear, Non-Color 16 bit png's.
This had never happened before, and I still have no idea what is going on or how to solve this.
Attached are a series of slides, any help is greatly appreciated.
Thanks in advance!
-Alan.
To keep things short:
I applied some normal maps to my geometry, funky stuff started happening, visual artifacts, visible banding of the geometry, visible seams of the normal textures.
Tried different approaches and setting.
-Applied Scale / Scale is set.
-Smooth shading is enabled.
-UV Islands are flat.
-No extra Attributes are applied to the mesh (No custom normals or the like)
-Textures are Linear, Non-Color 16 bit png's.
This had never happened before, and I still have no idea what is going on or how to solve this.
Attached are a series of slides, any help is greatly appreciated.
Thanks in advance!
-Alan.
Replies
How exactly was the normal map created? Was it baked from geometry, or converted from a bitmap? What software was used to make it?
This looks like a tangent-space normal map, not an object-space map, so I would disregard any preview using object space.
Looks like you are viewing this inside Blender, but targeting a glTF export, is that correct? Have you tried exporting to glTF, and viewing in a webGL renderer like glTF Sample Viewer? Important note is that glTF does not support 16bit textures, so you'll need to downsample to 8 bits per channel (24bit).
Also, glTF disregards the alpha channel in a normal map, so if you want to apply this as a decal then bake it down with the bottom layer normal map.
http://wiki.polycount.com/wiki/Normal_map#Blending_Normal_Maps_Together
or maybe even check out this.. :
https://blenderartists.org/t/normal-map-combiner/1592752
( Didn't checked this out yet myself