update

Assets/Custom RP.asset

@@ -27,3 +27,6 @@ MonoBehaviour:
       cascadeRatio3: 0.5
       cascadeFade: 0.1
       cascadeBlend: 1
+    other:
+      atlasSize: 1024
+      filter: 0

Assets/Custom RP/Runtime/Shadows.cs

@@ -50,6 +50,8 @@ public class Shadows
         public float slopeScaleBias;
         // 法线偏差
         public float normalBias;
+        // 是否是点光源
+        public bool isPoint;
     }
 
     // 存储可投身阴影的非定向光源的数据
@@ -185,7 +187,10 @@ public class Shadows
             useShadowMask = true;
             maskChannel = lightBaking.occlusionMaskChannel;
         }
-        if (shadowedOtherLightCount >= maxShadowedOtherLightCount || !cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
+
+        bool isPoint = light.type == LightType.Point;
+        int newLightCount = shadowedOtherLightCount + (isPoint ? 6 : 1);
+        if (newLightCount >= maxShadowedOtherLightCount || !cullingResults.GetShadowCasterBounds(visibleLightIndex, out Bounds b))
         {
             return new Vector4(-light.shadowStrength, 0f, 0f, maskChannel);
         }
@@ -193,9 +198,12 @@ public class Shadows
         shadowedOtherLights[shadowedOtherLightCount] = new ShadowedOtherLight{
             visibleLightIndex = visibleLightIndex,
             slopeScaleBias = light.shadowBias,
-            normalBias = light.shadowNormalBias
+            normalBias = light.shadowNormalBias,
+            isPoint = isPoint
         };
-        return new Vector4(light.shadowStrength, shadowedOtherLightCount++, 0f, maskChannel);
+        Vector4 data =  new Vector4(light.shadowStrength, shadowedOtherLightCount++, isPoint ? 1f : 0f, maskChannel);
+        shadowedOtherLightCount = newLightCount;
+        return data;
     }
 
     /// <summary>
@@ -301,7 +309,16 @@ public class Shadows
         // 遍历所有光源渲染阴影贴图
         for (int i = 0; i < shadowedOtherLightCount; i++)
         {
-            RenderSpotShadows(i, split, tileSize);
+            if (shadowedOtherLights[i].isPoint)
+            {
+                RenderPointShadows(i, split, tileSize);
+                i += 6;
+            }
+            else
+            {
+                RenderSpotShadows(i, split, tileSize);
+                i += 1;
+            }
         }
 
         // 阴影转换矩阵传入GPU
@@ -400,6 +417,39 @@ public class Shadows
         buffer.SetGlobalDepthBias(0f, 0f);
     }
 
+    /// <summary>
+    /// 渲染点光源阴影
+    /// </summary>
+    /// <param name="index"></param>
+    /// <param name="split"></param>
+    /// <param name="tileSize"></param>
+    void RenderPointShadows(int index, int split, int tileSize)
+    {
+        ShadowedOtherLight light = shadowedOtherLights[index];
+        var newShadowSettings = new ShadowDrawingSettings(cullingResults, light.visibleLightIndex);
+		for (int i = 0; i < 6; i++)
+        {
+            cullingResults.ComputePointShadowMatricesAndCullingPrimitives(light.visibleLightIndex, (CubemapFace)i, 0f, out Matrix4x4 viewMatrix, out Matrix4x4 projectionMatrix, out ShadowSplitData splitData);
+            newShadowSettings.splitData = splitData;
+
+            int tileIndex = index + i;
+            // 计算法线偏差
+            float texelSize = 2f / (tileSize * projectionMatrix.m00);
+            float filterSize = texelSize * ((float)shadowSettings.other.filter + 1f);
+            float bias = light.normalBias * filterSize * 1.4142136f;
+            Vector2 offset = SetTileViewport(tileIndex, split, tileSize);
+            float tileScale = 1f / split;
+            SetOtherTileData(tileIndex, offset, tileScale, bias);
+            otherShadowMatrices[tileIndex] = ConvertToAtlasMatrix(projectionMatrix * viewMatrix, offset, tileScale);
+            buffer.SetViewProjectionMatrices(viewMatrix, projectionMatrix);
+            buffer.SetGlobalDepthBias(0f, light.slopeScaleBias);
+            ExecuteBuffer();
+            context.DrawShadows(ref newShadowSettings);
+            buffer.SetGlobalDepthBias(0f, 0f);
+        }
+    }
+
+
     /// <summary>
     /// 存储非定向光阴影图块数据
     /// </summary>

Assets/Scenes/Baked Light.unity

@@ -6459,7 +6459,7 @@ Transform:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 1175923569}
   m_LocalRotation: {x: -0.27148798, y: -0.8180644, z: 0.3949701, w: -0.31790495}
-  m_LocalPosition: {x: -6.62, y: 2.7, z: 2.75}
+  m_LocalPosition: {x: -8.16, y: 2.7, z: 2.13}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children: []
   m_Father: {fileID: 0}