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Add auto-converting old point/spot lights brightness when using Inverse Squared Falloff to match new shader math

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#3907
This commit is contained in:
Wojtek Figat
2026-03-12 00:00:28 +01:00
parent 6d9d606085
commit 895dcf4aa6
3 changed files with 20 additions and 1 deletions
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2
Flax.flaxproj
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@@ -4,7 +4,7 @@
"Major": 1,
"Minor": 11,
"Revision": 0,
"Build": 6807
"Build": 6808
},
"Company": "Flax",
"Copyright": "Copyright (c) 2012-2026 Wojciech Figat. All rights reserved.",

9
Source/Engine/Level/Actors/PointLight.cpp
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@@ -1,6 +1,7 @@
// Copyright (c) Wojciech Figat. All rights reserved.
#include "PointLight.h"
#include "Engine/Content/Deprecated.h"
#include "Engine/Graphics/RenderTask.h"
#include "Engine/Graphics/RenderTools.h"
#include "Engine/Graphics/RenderView.h"
@@ -196,6 +197,14 @@ void PointLight::Deserialize(DeserializeStream& stream, ISerializeModifier* modi
DESERIALIZE(UseInverseSquaredFalloff);
DESERIALIZE(UseIESBrightness);
DESERIALIZE(IESBrightnessScale);
// [Deprecated on 12.03.2026, expires on 12.03.2028]
if (modifier->EngineBuild <= 6807 && SERIALIZE_FIND_MEMBER(stream, "UseInverseSquaredFalloff") != stream.MemberEnd() && UseInverseSquaredFalloff)
{
// Convert old non-physical brightness value that was used for Inverse Squared Falloff which wasn't based on proper cm/m units calculations
MARK_CONTENT_DEPRECATED();
Brightness = Math::Sqrt(Brightness * 0.01f);
}
}
bool PointLight::IntersectsItself(const Ray& ray, Real& distance, Vector3& normal)

10
Source/Engine/Level/Actors/SpotLight.cpp
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@@ -1,6 +1,8 @@
// Copyright (c) Wojciech Figat. All rights reserved.
#include "SpotLight.h"
#include "Engine/Content/Deprecated.h"
#include "Engine/Graphics/RenderView.h"
#include "Engine/Renderer/RenderList.h"
#include "Engine/Content/Assets/IESProfile.h"
@@ -282,6 +284,14 @@ void SpotLight::Deserialize(DeserializeStream& stream, ISerializeModifier* modif
DESERIALIZE(UseInverseSquaredFalloff);
DESERIALIZE(UseIESBrightness);
DESERIALIZE(IESBrightnessScale);
// [Deprecated on 12.03.2026, expires on 12.03.2028]
if (modifier->EngineBuild <= 6807 && SERIALIZE_FIND_MEMBER(stream, "UseInverseSquaredFalloff") != stream.MemberEnd() && UseInverseSquaredFalloff)
{
// Convert old non-physical brightness value that was used for Inverse Squared Falloff which wasn't based on proper cm/m units calculations
MARK_CONTENT_DEPRECATED();
Brightness = Math::Sqrt(Brightness * 0.01f);
}
}
bool SpotLight::IntersectsItself(const Ray& ray, Real& distance, Vector3& normal)