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Remove pows and sqrts from attenuation computation + readjust attenuation parameter bounds (https://github.com/o3de/o3de/pull/6428#discussion_r776071926, https://github.com/o3de/o3de/pull/6428#discussion_r776066792)

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Signed-off-by: Santi Paprika <santi.gonzalez.cs@gmail.com>
This commit is contained in:
Santi Paprika
2022-01-04 14:58:49 +01:00
parent 41e8e5dc89
commit 0bae6d062f
3 changed files with 5 additions and 5 deletions
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Gems/Atom/Feature/Common/Assets/Materials/Types/EnhancedPBR.materialtype
+2 -2
View File
@@ -1254,9 +1254,9 @@
"displayName": " Distance Attenuation",
"description": "Attenuation applied to hide artifacts due to low-res shadow maps (e.g. objects far to the camera when using directional lights or objects far to the light when using sphere/disk lights",
"type": "float",
"defaultValue": 4.0,
"defaultValue": 0.5,
"min": 0.0,
"softMax": 10.0,
"softMax": 4.0,
"connection": {
"type": "ShaderInput",
"name": "m_distanceAttenuation"
Gems/Atom/Feature/Common/Assets/Materials/Types/Skin.materialtype
+2 -2
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@@ -668,9 +668,9 @@
"displayName": " Distance Attenuation",
"description": "Attenuation applied to hide artifacts due to low-res shadow maps (e.g. objects far to the camera when using directional lights or objects far to the light when using sphere/disk lights",
"type": "float",
"defaultValue": 4.0,
"defaultValue": 0.5,
"min": 0.0,
"softMax": 10.0,
"softMax": 4.0,
"connection": {
"type": "ShaderInput",
"name": "m_distanceAttenuation"
Gems/Atom/Feature/Common/Assets/ShaderLib/Atom/Features/PBR/BackLighting.azsli
+1 -1
View File
@@ -90,7 +90,7 @@ float3 GetBackLighting(Surface surface, LightingData lightingData, float3 lightI
// result = T(s) * lightIntensity * surface.albedo * E * transmissionParams.w;
// Distance attenuation applied to hide artifacts due to low-res projected areas onto shadowmaps (might need some work in the future)
result *= 1.0 / pow(max(1.0, sqrt(attenuationDistance)), lightingData.distanceAttenuation + 1.0);
result /= max(1.0, attenuationDistance * attenuationDistance * lightingData.distanceAttenuation);
}
break;
}