Eevee: Initial Separable Subsurface Scattering implementation.

How to use:
- Enable subsurface scattering in the render options.
- Add Subsurface BSDF to your shader.
- Check "Screen Space Subsurface Scattering" in the material panel options.

This initial implementation has a few limitations:
- only supports gaussian SSS.
- Does not support principled shader.
- The radius parameters is baked down to a number of samples and then put into an UBO. This means the radius input socket cannot be used. You need to tweak the default vector directly.
- The "texture blur" is considered as always set to 1

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/makesdna/DNA_material_types.h b/source/blender/makesdna/DNA_material_types.h
index 220326fb01d..34b9f9f83bf 100644
--- a/source/blender/makesdna/DNA_material_types.h
+++ b/source/blender/makesdna/DNA_material_types.h
@@ -513,6 +513,7 @@ enum {
 enum {
 	MA_BL_HIDE_BACKSIDE =        (1 << 0),
 	MA_BL_SS_REFRACTION =        (1 << 1),
+	MA_BL_SS_SUBSURFACE =        (1 << 2),
 };
 
 /* blend_shadow */