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Tweak shadow bias defaults for DirectionalLight3D and OmniLight3D

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- Increase DirectionalLight3D normal bias to 2.0 to reduce shadow acne
  at grazing angles.
- Decrease OmniLight3D bias to 0.1 to reduce shadow peter-panning.
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Hugo Locurcio 2022-12-05 21:44:23 +01:00
parent f3e6750a7e
commit e560971bf2
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5 changed files with 13 additions and 9 deletions
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2
doc/classes/Light3D.xml
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@ -114,7 +114,7 @@
<member name="shadow_enabled" type="bool" setter="set_shadow" getter="has_shadow" default="false">
If [code]true[/code], the light will cast real-time shadows. This has a significant performance cost. Only enable shadow rendering when it makes a noticeable difference in the scene's appearance, and consider using [member distance_fade_enabled] to hide the light when far away from the [Camera3D].
</member>
<member name="shadow_normal_bias" type="float" setter="set_param" getter="get_param" default="1.0">
<member name="shadow_normal_bias" type="float" setter="set_param" getter="get_param" default="2.0">
Offsets the lookup into the shadow map by the object's normal. This can be used to reduce self-shadowing artifacts without using [member shadow_bias]. In practice, this value should be tweaked along with [member shadow_bias] to reduce artifacts as much as possible.
</member>
<member name="shadow_opacity" type="float" setter="set_param" getter="get_param" default="1.0">

2
doc/classes/OmniLight3D.xml
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@ -20,7 +20,7 @@
<member name="omni_shadow_mode" type="int" setter="set_shadow_mode" getter="get_shadow_mode" enum="OmniLight3D.ShadowMode" default="1">
See [enum ShadowMode].
</member>
<member name="shadow_bias" type="float" setter="set_param" getter="get_param" overrides="Light3D" default="0.2" />
<member name="shadow_normal_bias" type="float" setter="set_param" getter="get_param" overrides="Light3D" default="1.0" />
</members>
<constants>
<constant name="SHADOW_DUAL_PARABOLOID" value="0" enum="ShadowMode">

1
doc/classes/SpotLight3D.xml
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@ -12,6 +12,7 @@
</tutorials>
<members>
<member name="shadow_bias" type="float" setter="set_param" getter="get_param" overrides="Light3D" default="0.03" />
<member name="shadow_normal_bias" type="float" setter="set_param" getter="get_param" overrides="Light3D" default="1.0" />
<member name="spot_angle" type="float" setter="set_param" getter="get_param" default="45.0">
The spotlight's angle in degrees.
[b]Note:[/b] [member spot_angle] is not affected by [member Node3D.scale] (the light's scale or its parent's scale).