Fix : Fur 디졸브 기능 버그 패치

Assets/NiloToonURP/Shaders/NiloToonCharacterFur.shader

@@ -213,6 +213,11 @@ Shader "Universal Render Pipeline/NiloToon/NiloToon_Character_Fur"
         //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
         [HideInInspector] _PerCharacterZOffset("_PerCharacterZOffset", Float) = 0
 
+        //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        // Character Bound (for dissolve)
+        //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+        [HideInInspector] _CharacterBoundRadius("_CharacterBoundRadius", Float) = 2.5
+
         // Hidden
         [HideInInspector] _Surface("__surface", Float) = 0.0
         [HideInInspector] _Blend("__blend", Float) = 0.0

Assets/NiloToonURP/Shaders/NiloToonCharacterFur_HLSL/NiloToonCharacterFur_Fragment.hlsl

@@ -46,49 +46,82 @@ void ApplyDissolve(inout half3 color, float2 uv, float3 positionWS, float4 posit
 
     half dissolveMapThresholdMapValue = 0;
 
+    // UV1 - sample .g channel (matching NiloToonCharacter)
     if(_DissolveMode == DISSOLVEMODE_UV1)
     {
         float2 dissolveUV = uv * uvTiling;
-        dissolveMapThresholdMapValue = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).r;
+        dissolveMapThresholdMapValue = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g;
     }
+    // WorldSpaceNoise - 3-axis multiplication (matching NiloToonCharacter)
     else if(_DissolveMode == DISSOLVEMODE_WorldSpaceNoise)
     {
-        float2 dissolveUV = positionWS.xz * uvTiling;
+        float2 dissolveUV;
-        float noise = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g * noiseStrength;
+
-        dissolveMapThresholdMapValue = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).r + noise;
+        dissolveUV = positionWS.xz * uvTiling;
+        dissolveMapThresholdMapValue = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g;
+
+        dissolveUV = positionWS.xy * uvTiling;
+        dissolveMapThresholdMapValue *= SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g;
+
+        dissolveUV = positionWS.yz * uvTiling;
+        dissolveMapThresholdMapValue *= SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g;
     }
+    // WorldSpaceVerticalUpward - use character bound data from global arrays
     else if(_DissolveMode == DISSOLVEMODE_WorldSpaceVerticalUpward)
     {
         float2 dissolveUV = positionWS.xz * uvTiling;
         float noise = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g * noiseStrength;
-        dissolveMapThresholdMapValue = saturate(positionWS.y * 0.1 + noise);
+        // Calculate character bound from center pos and radius (same as NiloToonCharacter)
+        float3 characterBoundCenterPosWS = _NiloToonGlobalPerCharBoundCenterPosWSArray[_CharacterID];
+        float characterBoundBottom = characterBoundCenterPosWS.y - _CharacterBoundRadius;
+        float characterBoundTop = characterBoundCenterPosWS.y + _CharacterBoundRadius;
+        dissolveMapThresholdMapValue = invLerpClamp(characterBoundBottom, characterBoundTop, positionWS.y + noise);
     }
+    // WorldSpaceVerticalDownward - use character bound data from global arrays
     else if(_DissolveMode == DISSOLVEMODE_WorldSpaceVerticalDownward)
     {
         float2 dissolveUV = positionWS.xz * uvTiling;
         float noise = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g * noiseStrength;
-        dissolveMapThresholdMapValue = saturate((1 - positionWS.y * 0.1) + noise);
+        // Calculate character bound from center pos and radius (same as NiloToonCharacter)
+        float3 characterBoundCenterPosWS = _NiloToonGlobalPerCharBoundCenterPosWSArray[_CharacterID];
+        float characterBoundBottom = characterBoundCenterPosWS.y - _CharacterBoundRadius;
+        float characterBoundTop = characterBoundCenterPosWS.y + _CharacterBoundRadius;
+        dissolveMapThresholdMapValue = invLerpClamp(characterBoundTop, characterBoundBottom, positionWS.y + noise);
     }
+    // ScreenSpaceNoise - use character bound 2D rect UV (matching NiloToonCharacter)
     else if(_DissolveMode == DISSOLVEMODE_ScreenSpaceNoise)
     {
-        float2 screenUV = positionCS.xy / positionCS.w;
+        // Calculate character bound 2D rect UV using Calc3DSphereTo2DUV (same as NiloToonCharacter)
-        float2 dissolveUV = screenUV * uvTiling;
+        float3 characterBoundCenterPosWS = _NiloToonGlobalPerCharBoundCenterPosWSArray[_CharacterID];
-        float noise = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g * noiseStrength;
+        float2 characterBound2DRectUV01 = Calc3DSphereTo2DUV(positionWS, characterBoundCenterPosWS, _CharacterBoundRadius);
-        dissolveMapThresholdMapValue = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).r + noise;
+
+        // since the default bounding sphere is 2.5m, when compared to world space, it should have 2.5x Tiling
+        float2 dissolveUV = characterBound2DRectUV01 * uvTiling * 2.5;
+        dissolveMapThresholdMapValue = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g;
     }
+    // ScreenSpaceVerticalUpward
     else if(_DissolveMode == DISSOLVEMODE_ScreenSpaceVerticalUpward)
     {
-        float2 screenUV = positionCS.xy / positionCS.w;
+        // Calculate character bound 2D rect UV using Calc3DSphereTo2DUV (same as NiloToonCharacter)
-        float2 dissolveUV = screenUV * uvTiling;
+        float3 characterBoundCenterPosWS = _NiloToonGlobalPerCharBoundCenterPosWSArray[_CharacterID];
+        float2 characterBound2DRectUV01 = Calc3DSphereTo2DUV(positionWS, characterBoundCenterPosWS, _CharacterBoundRadius);
+
+        // since the default bounding sphere is 2.5m, when compared to world space, it should have 2.5x Tiling
+        float2 dissolveUV = characterBound2DRectUV01 * uvTiling * 2.5;
         float noise = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g * noiseStrength;
-        dissolveMapThresholdMapValue = saturate(screenUV.y + noise);
+        dissolveMapThresholdMapValue = saturate(characterBound2DRectUV01.y + noise);
     }
+    // ScreenSpaceVerticalDownward
     else if(_DissolveMode == DISSOLVEMODE_ScreenSpaceVerticalDownward)
     {
-        float2 screenUV = positionCS.xy / positionCS.w;
+        // Calculate character bound 2D rect UV using Calc3DSphereTo2DUV (same as NiloToonCharacter)
-        float2 dissolveUV = screenUV * uvTiling;
+        float3 characterBoundCenterPosWS = _NiloToonGlobalPerCharBoundCenterPosWSArray[_CharacterID];
+        float2 characterBound2DRectUV01 = Calc3DSphereTo2DUV(positionWS, characterBoundCenterPosWS, _CharacterBoundRadius);
+
+        // since the default bounding sphere is 2.5m, when compared to world space, it should have 2.5x Tiling
+        float2 dissolveUV = characterBound2DRectUV01 * uvTiling * 2.5;
         float noise = SAMPLE_TEXTURE2D(_DissolveThresholdMap, sampler_DissolveThresholdMap, dissolveUV).g * noiseStrength;
-        dissolveMapThresholdMapValue = saturate((1 - screenUV.y) + noise);
+        dissolveMapThresholdMapValue = saturate((1 - characterBound2DRectUV01.y) + noise);
     }
 
     half dissolve = dissolveMapThresholdMapValue - finalDissolveAmount;

Assets/NiloToonURP/Shaders/NiloToonCharacterFur_HLSL/NiloToonCharacterFur_Shared.hlsl

@@ -13,6 +13,7 @@
 #include "../../ShaderLibrary/NiloUtilityHLSL/NiloBlendEquationUtil.hlsl"
 #include "../../ShaderLibrary/NiloUtilityHLSL/NiloDitherFadeoutClipUtil.hlsl"
 #include "../../ShaderLibrary/NiloUtilityHLSL/NiloPerspectiveRemovalUtil.hlsl"
+#include "../../ShaderLibrary/NiloUtilityHLSL/NiloUVCalculateUtil.hlsl"
 
 //------------------------------------------------------------------------------------------------------------------------------
 // NiloToon Global Light Override Variables (from NiloToonCharacterMainLightOverrider)
@@ -189,6 +190,9 @@ CBUFFER_START(UnityPerMaterial)
     // ZOffset
     half _PerCharacterZOffset;
 
+    // Character Bound (for dissolve)
+    float _CharacterBoundRadius;
+
     // Character ID (for accessing global arrays)
     uint _CharacterID;
 CBUFFER_END
@@ -204,6 +208,7 @@ CBUFFER_END
 float3 _NiloToonGlobalPerCharHeadBonePosWSArray[MAX_CHARACTER_COUNT];
 float3 _NiloToonGlobalPerCharFaceForwardDirWSArray[MAX_CHARACTER_COUNT];
 float3 _NiloToonGlobalPerCharFaceUpwardDirWSArray[MAX_CHARACTER_COUNT];
+float3 _NiloToonGlobalPerCharBoundCenterPosWSArray[MAX_CHARACTER_COUNT];
 
 //------------------------------------------------------------------------------------------------------------------------------
 // Texture Declarations (all textures declared unconditionally to avoid compilation issues)