DeMuenu/MoonlightVRC
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mirror of https://github.com/DeMuenu/MoonlightVRC.git synced 2025-12-13 11:33:54 +00:00
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Add shadowcaster support to lighting and shaders

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Introduces shadowcaster support by adding shadow map index fields to light data, updating PlayerPositionsToShader and LightdataStorage to handle shadow map indices, and extending the shader and its includes to sample shadowcaster planes. Adds ShadowcasterUpdater script and editor preview for updating world-to-local matrices, and updates relevant arrays and property handling throughout the codebase. Also adds a sample plane mesh for shadowcasting.
This commit is contained in:
DeMuenu
2025-09-29 23:14:38 +02:00
parent bce6fbdc3d
commit 868e713336
15 changed files with 521 additions and 61 deletions
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62
Scripts/PlayerPositionsToShader.cs
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@@ -24,6 +24,9 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
public float playerLightIntensity = 5f;
public float remoteLightIntensity = 2f;
[Tooltip("0 = no shadows, 1-4 = shadow map index")]
public float PlayerShadowMapIndex = 0f; // 0 = no shadows, 1-4 = shadow map index
[Header("Shader property names (advanced users)")]
[Tooltip("Vector4 array: xyz = position, w = range")]
@@ -41,6 +44,9 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
[Tooltip("float array: light type (1=area, 2=cone, etc)")]
public string typeProperty = "_Udon_LightType";
[Tooltip("float array: shadow map index (0=none, 1-4=shadow map index)")]
public string shadowMapIndexProperty = "_Udon_ShadowMapIndex";
[Header("Max Lights (advanced users)")]
[Tooltip("Hard cap / array size. 80 = default cap")]
public int maxLights = 80;
@@ -57,9 +63,11 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
private float[] _TypeArray;
private bool _TypeArray_isDirty = false;
private float[] _ShadowMapArray;
private bool _ShadowMap_isDirty = false;
private VRCPlayerApi[] _players;
private MaterialPropertyBlock _mpb;
public int currentCount { get; private set; }
@@ -70,6 +78,7 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
private int UdonID_LightColors;
private int UdonID_LightDirections;
private int UdonID_LightType;
private int UdonID_ShadowMapIndex;
void Start()
{
@@ -79,15 +88,16 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
_lightColors = new Vector4[maxLights];
_directions = new Vector4[maxLights];
_TypeArray = new float[maxLights];
_ShadowMapArray = new float[maxLights];
_players = new VRCPlayerApi[maxLights];
_mpb = new MaterialPropertyBlock();
UdonID_PlayerPositions = VRCShader.PropertyToID(positionsProperty);
UdonID_LightCount = VRCShader.PropertyToID(countProperty);
UdonID_LightColors = VRCShader.PropertyToID(colorProperty);
UdonID_LightDirections = VRCShader.PropertyToID(directionsProperty);
UdonID_LightType = VRCShader.PropertyToID(typeProperty);
UdonID_ShadowMapIndex = VRCShader.PropertyToID(shadowMapIndexProperty);
UpdateData();
@@ -150,6 +160,11 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
_TypeArray[i] = 0f;
_TypeArray_isDirty = true;
}
if (_ShadowMapArray[i] != PlayerShadowMapIndex)
{
_ShadowMapArray[i] = PlayerShadowMapIndex;
_ShadowMap_isDirty = true;
}
}
@@ -175,6 +190,11 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
_TypeArray[i] = 0f;
_TypeArray_isDirty = true;
}
if (_ShadowMapArray[i] != 0f)
{
_ShadowMapArray[i] = 0f;
_ShadowMap_isDirty = true;
}
}
}
@@ -230,6 +250,13 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
_TypeArray_isDirty = true;
}
float shadowMapIndex = (data != null) ? data.shadowMapIndex : 0f;
if (_ShadowMapArray[currentCount] != shadowMapIndex)
{
_ShadowMapArray[currentCount] = shadowMapIndex;
_ShadowMap_isDirty = true;
}
currentCount++;
}
}
@@ -259,6 +286,12 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
_TypeArray[i] = 0f;
_TypeArray_isDirty = true;
}
if (_ShadowMapArray[i] != 0f)
{
_ShadowMapArray[i] = 0f;
_ShadowMap_isDirty = true;
}
}
}
@@ -267,23 +300,26 @@ public partial class PlayerPositionsToShader : UdonSharpBehaviour
// Snapshot which things are dirty this frame
bool pushPositions = _positons_isDirty;
bool pushColors = _lightColors_isDirty;
bool pushDirs = _directions_isDirty;
bool pushTypes = _TypeArray_isDirty && !string.IsNullOrEmpty(typeProperty);
bool pushColors = _lightColors_isDirty;
bool pushDirs = _directions_isDirty;
bool pushTypes = _TypeArray_isDirty && !string.IsNullOrEmpty(typeProperty);
bool pushShadowMap = _ShadowMap_isDirty;
if (pushPositions) VRCShader.SetGlobalVectorArray(UdonID_PlayerPositions, _positions);
if (pushColors) VRCShader.SetGlobalVectorArray(UdonID_LightColors, _lightColors);
if (pushDirs) VRCShader.SetGlobalVectorArray(UdonID_LightDirections, _directions);
if (pushTypes) _mpb.SetFloatArray(UdonID_LightType, _TypeArray);
if (pushColors) VRCShader.SetGlobalVectorArray(UdonID_LightColors, _lightColors);
if (pushDirs) VRCShader.SetGlobalVectorArray(UdonID_LightDirections, _directions);
if (pushTypes) VRCShader.SetGlobalFloatArray(UdonID_LightType, _TypeArray);
if (pushShadowMap) VRCShader.SetGlobalFloatArray(UdonID_ShadowMapIndex, _ShadowMapArray);
VRCShader.SetGlobalFloat(UdonID_LightCount, currentCount);
Debug.Log($"[MoonlightVRC] Pushed {currentCount} lights to shader.");
// Only now mark them clean
if (pushPositions) { _positons_isDirty = false;}
if (pushColors) { _lightColors_isDirty = false;}
if (pushDirs) { _directions_isDirty = false;}
if (pushTypes) { _TypeArray_isDirty = false;}
if (pushPositions) { _positons_isDirty = false; }
if (pushColors) { _lightColors_isDirty = false; }
if (pushDirs) { _directions_isDirty = false; }
if (pushTypes) { _TypeArray_isDirty = false; }
if (pushShadowMap) { _ShadowMap_isDirty = false; }
}
}