Shader Setup
For the simplest shader: SB_Info node needed with Cards UVs pugged into Atlas textures that was mapped by UV Layout.
All materials with transparency should using Alpha Hashed or Alpha Clip blend modes in Eevee.
It’s better to use Cards Normal in shader Normal inputs to achieve one-sided lighting interaction, it gives more painterly look.
Shadows Off.mp4
Turn off Shadow ray visibility in Cycles and Shadow blend mode to none in Eevee for better results.
SB_Info Node
In shader editor Shift + A > SplineBrush > SB_Info
Color attributes
- Surface Images
-stored and transferred from linked mesh surface on Cards geometry and located in Spline Brush Cards modifier
- Random
-Random RGB value per Card
UVs
- Cards UVMap
-based on UV Layout mapping distribution
- Cards Packed UVMap
-if Pack UV checkbox was turned on, store packed UV islands.
- Cards Normilized UVMap
-0..1 range UV Map
- SurfaceUV
-Transferred per spline point UV map of Surface
Normal
- Cards Normal
-Single sided Cards Normal.
- Surface Normal
-Transferred per spline point Surface Normal
Masks
- Cards Mask
-Cards Geometry mask.
- Spline Fac
-0..1 Value along spline length.
- Guide Spline Fac
-0..1 Value along spline length even with Guided Scattering.
Camera Space
- Occlusion Culling
-Transparency mask of projected strokes, that positioned behind the mesh surfaces and should be invisible from camera angle.
- View Distance Gradient
-Normilized 0..1 value from nearest to farthest point based on view distance.
- Min Distance
-Nearest geometry distance to camera location
- Min Distance
-Farthest geometry distance to camera location
- Refraction vectors
-Normal Attributes for refraction shader based on camera location. Used in smudging technique.
SB_Refraction Strokes Shader
In shader editor Shift + A > SplineBrush > SB_Refraction Strokes
Smudging of camera space refraction strokes
Smudging of camera space refraction strokes
When using Camera space projection and SB_Refraction Strokes shaders, make sure that Screen Space Reflections and Refraction turned on.