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Refactor light range and angle calculations

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Updated how light range and spot angle are calculated and packed for both editor and runtime scripts, distinguishing between sphere and non-sphere lights. Adjusted shader logic to use new packing for spot light contribution, improving consistency between CPU and GPU representations.
This commit is contained in:
DeMuenu
2025-10-04 04:10:43 +02:00
parent bb31145e4d
commit 65c34d2ddf
3 changed files with 27 additions and 11 deletions
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15
EditorPreview/LightUpdater.Editor.cs
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@@ -30,15 +30,24 @@ public partial class LightUpdater
LightdataStorage data = t.GetComponent<LightdataStorage>();
// w = cosHalfAngle (0 for omni)
float cosHalf = (data != null) ? data.GetCosHalfAngle() : 0f;
Vector3 pos = t.position;
float range = (data != null) ? data.range * t.localScale.x : t.localScale.x;
float range = 0;
if (data.lightType == LightType.Sphere)
{
range = (data != null) ? data.range * t.localScale.x : t.localScale.x;
}
else
{
range = (data != null) ? Mathf.Cos(Mathf.Deg2Rad * ((data.spotAngleDeg * 0.5f) + Mathf.Max(data.range, 0))): 0f;
}
// rgb = color, a = intensity (packed to match runtime/shader)
Vector4 col = (data != null) ? data.GetFinalColor() : new Vector4(1f, 1f, 1f, 1f);
float intensity = (data != null) ? data.intensity * t.localScale.x : 1f;
// w = cosHalfAngle (0 for omni)
float cosHalf = (data != null) ? data.spotAngleDeg : 0f;
// 0=Omni, 1=Spot, 2=Directional (your custom enum)
int typeId = (data != null) ? data.GetTypeId() : 0;

12
Scripts/LightUpdater.cs
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@@ -221,9 +221,17 @@ public partial class LightUpdater : UdonSharpBehaviour
Vector3 fwd = rot * Vector3.down;
float Lightangle = (data != null) ? data.spotAngleDeg : 0f;
float Lightangle = (data != null) ? data.GetCosHalfAngle() : 0f;
Vector4 posTemp = new Vector4(pos.x, pos.y, pos.z, range);
Vector4 posTemp = Vector4.zero;
if (data.lightType == LightType.Sphere)
{
posTemp = new Vector4(pos.x, pos.y, pos.z, range);
}
else
{
posTemp = new Vector4(pos.x, pos.y, pos.z, Mathf.Cos(Mathf.Deg2Rad * ((data.spotAngleDeg * 0.5f) + Mathf.Max(data.range, 0))));
}
if (_positions[currentCount] != posTemp)
{
_positions[currentCount] = posTemp;

5
Shader/Includes/LightStrength.hlsl
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@@ -11,10 +11,9 @@
else if (_Udon_LightType[LightCounter] == 1) \
{ \
float invSq = _Udon_LightColors[LightCounter].a / max(1e-4, (distanceFromLight * invSqMul) * (distanceFromLight * invSqMul)); \
float threshold = (-1 + _Udon_LightDirections[LightCounter].w / 180); \
\
contrib = min(dot(normalize(i.worldPos - Lightposition), -normalize(_Udon_LightDirections[LightCounter].xyz)), 0); \
contrib= 1 - smoothstep(threshold, threshold + radius / 180, contrib); \
contrib = dot(normalize(i.worldPos - Lightposition), normalize(_Udon_LightDirections[LightCounter].xyz)); \
contrib = smoothstep(radius,_Udon_LightDirections[LightCounter].w, contrib); \
\
contrib = contrib * invSq; \
dIntensity += contrib; \