GoaLitiuM/FlaxEngine
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add smooth light brightness fade out at last 10% of ViewDistance (if used)

Browse Source
This commit is contained in:
Wojtek Figat
2024-08-12 18:32:33 +02:00
parent f025f923ae
commit 596ad18ce3
4 changed files with 20 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
Source/Engine/Level/Actors/DirectionalLight.cpp
View File

@@ -18,11 +18,11 @@ void DirectionalLight::Draw(RenderContext& renderContext)
{
float brightness = Brightness;
AdjustBrightness(renderContext.View, brightness);
const Float3 position = GetPosition() - renderContext.View.Origin;
Float3 position;
if (Brightness > ZeroTolerance
&& EnumHasAnyFlags(renderContext.View.Flags, ViewFlags::DirectionalLights)
&& EnumHasAnyFlags(renderContext.View.Pass, DrawPass::GBuffer)
&& (ViewDistance < ZeroTolerance || Float3::DistanceSquared(renderContext.View.Position, position) < ViewDistance * ViewDistance))
&& CheckViewDistance(renderContext.View.Position, renderContext.View.Origin, position, brightness))
{
RenderDirectionalLightData data;
data.Position = position;

15
Source/Engine/Level/Actors/Light.h
View File

@@ -29,7 +29,7 @@ public:
float Brightness = 3.14f;
/// <summary>
/// Controls light visibility range. The distance at which the light becomes completely faded. Use a value of 0 to always draw light.
/// Controls light visibility range. The distance at which the light becomes completely faded (blend happens on the last 10% of that range). Use a value of 0 to always draw light.
/// </summary>
API_FIELD(Attributes="EditorOrder(35), Limit(0, float.MaxValue, 10.0f), EditorDisplay(\"Light\")")
float ViewDistance = 0.0f;
@@ -56,6 +56,19 @@ protected:
// Adjust the light brightness used during rendering (called by light types inside SetupLightData callback)
void AdjustBrightness(const RenderView& view, float& brightness) const;
FORCE_INLINE bool CheckViewDistance(const Float3& viewPosition, const Float3& viewOrigin, Float3& position, float& brightness) const
{
position = _transform.Translation - viewOrigin;
if (ViewDistance > ZeroTolerance)
{
const float dst2 = Vector3::DistanceSquared(viewPosition, position);
const float dst = Math::Sqrt(dst2);
brightness *= Math::Remap(dst, 0.9f * ViewDistance, ViewDistance, 1.0f, 0.0f);
return dst < ViewDistance;
}
return true;
}
public:
// [Actor]
void OnEnable() override;

4
Source/Engine/Level/Actors/PointLight.cpp
View File

@@ -82,13 +82,13 @@ void PointLight::Draw(RenderContext& renderContext)
{
float brightness = ComputeBrightness();
AdjustBrightness(renderContext.View, brightness);
const Float3 position = GetPosition() - renderContext.View.Origin;
Float3 position;
const float radius = GetScaledRadius();
if (EnumHasAnyFlags(renderContext.View.Flags, ViewFlags::PointLights)
&& EnumHasAnyFlags(renderContext.View.Pass, DrawPass::GBuffer)
&& brightness > ZeroTolerance
&& radius > ZeroTolerance
&& (ViewDistance < ZeroTolerance || Vector3::DistanceSquared(renderContext.View.Position, position) < ViewDistance * ViewDistance))
&& CheckViewDistance(renderContext.View.Position, renderContext.View.Origin, position, brightness))
{
RenderPointLightData data;
data.Position = position;

4
Source/Engine/Level/Actors/SpotLight.cpp
View File

@@ -130,7 +130,7 @@ void SpotLight::Draw(RenderContext& renderContext)
{
float brightness = ComputeBrightness();
AdjustBrightness(renderContext.View, brightness);
const Float3 position = GetPosition() - renderContext.View.Origin;
Float3 position;
const float radius = GetScaledRadius();
const float outerConeAngle = GetOuterConeAngle();
if (EnumHasAnyFlags(renderContext.View.Flags, ViewFlags::SpotLights)
@@ -138,7 +138,7 @@ void SpotLight::Draw(RenderContext& renderContext)
&& brightness > ZeroTolerance
&& radius > ZeroTolerance
&& outerConeAngle > ZeroTolerance
&& (ViewDistance < ZeroTolerance || Vector3::DistanceSquared(renderContext.View.Position, position) < ViewDistance * ViewDistance))
&& CheckViewDistance(renderContext.View.Position, renderContext.View.Origin, position, brightness))
{
RenderSpotLightData data;
data.Position = position;