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Update subsurface color types #220

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Merged
jstone-lucasfilm merged 1 commit into from
Jun 27, 2024
Merged

Update subsurface color types #220

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2 changes: 1 addition & 1 deletion index.html
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Expand Up @@ -750,7 +750,7 @@
**`subsurface_weight`** | Weight | `float` | $ [0, 1] $ | | $ 0 $ | Mix weight between subsurface and diffuse slabs
**`subsurface_color`** | Color | `color3` | $ [0, 1] $ | | $ (0.8, 0.8, 0.8) $ | The observed reflection color of $V^\infty_\mathrm{subsurface}$
**`subsurface_radius`** | Radius | `float` | $ [0, \infty) $ | $ [0, 1] $ | $ 1 $ | Length scale of MFP
**`subsurface_radius_scale`** | Radius scale | `vector3` | $ [0, 1]^3 $ | | $ (1.0, 0.5, 0.25) $ | RGB multiplier to **`subsurface_radius`**, giving the per-channel MFPs
**`subsurface_radius_scale`** | Radius scale | `color3` | $ [0, 1]^3 $ | | $ (1.0, 0.5, 0.25) $ | RGB multiplier to **`subsurface_radius`**, giving the per-channel MFPs
**`subsurface_scatter_anisotropy`** | Anisotropy | `float` | $ [-1, 1] $ | | $ 0 $ | Anisotropy of the Henyey--Greenstein phase function of the interior medium $V^\infty_\mathrm{subsurface}$

![](images/subsurface1.jpg width=99%) ![](images/subsurface2.jpg width=99%) ![](images/subsurface3.jpg width=99%)
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2 changes: 1 addition & 1 deletion parametrization.md.html
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Expand Up @@ -44,7 +44,7 @@
| `subsurface_weight` | Weight | `float` | $ [0, 1] $ | | $ 0 $ | |
| `subsurface_color` | Color | `color3` | $ [0, 1] $ | | $ (0.8, 0.8, 0.8) $ | |
| `subsurface_radius` | Radius | `float` | $ [0, \infty) $ | $ [0, 1] $ | $ 1 $ | length |
| `subsurface_radius_scale` | Radius scale | `vector3` | $ [0, 1]^3 $ | | $ (1.0, 0.5, 0.25) $ | |
| `subsurface_radius_scale` | Radius scale | `color3` | $ [0, 1]^3 $ | | $ (1.0, 0.5, 0.25) $ | |
| `subsurface_scatter_anisotropy` | Anisotropy | `float` | $ [-1, 1] $ | | $ 0 $ | |
| **Coat** |
| `coat_weight` | Weight | `float` | $ [0, 1] $ | | $ 0 $ | |
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9 changes: 3 additions & 6 deletions reference/open_pbr_surface.mtlx
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Expand Up @@ -177,16 +177,13 @@
</mix>

<!-- Subsurface (non-thin-walled) -->
<convert name="subsurface_radius_vector" type="vector3">
<input name="in" type="color3" interfacename="subsurface_radius_scale" />
</convert>
<multiply name="subsurface_radius_scaled" type="vector3">
<input name="in1" type="vector3" nodename="subsurface_radius_vector" />
<multiply name="subsurface_radius_scaled" type="color3">
<input name="in1" type="color3" interfacename="subsurface_radius_scale" />
<input name="in2" type="float" interfacename="subsurface_radius" />
</multiply>
<subsurface_bsdf name="subsurface_bsdf" type="BSDF">
<input name="color" type="color3" nodename="subsurface_color_nonnegative" />
<input name="radius" type="vector3" nodename="subsurface_radius_scaled" />
<input name="radius" type="color3" nodename="subsurface_radius_scaled" />
<input name="anisotropy" type="float" interfacename="subsurface_scatter_anisotropy" />
<input name="normal" type="vector3" interfacename="geometry_normal" />
</subsurface_bsdf>
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