Hybrid Volumetric Fog + some swamp area test

Assets/Jbl_Shaders/Fog/VolumetricFogLightsFeature.cs

@@ -0,0 +1,57 @@
+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.Rendering.Universal;
+
+public class VolumetricFogLightsFeature : ScriptableRendererFeature
+{
+    class LightsPass : ScriptableRenderPass
+    {
+        static readonly int _CountID = Shader.PropertyToID("_FogLightCount");
+        static readonly int _PosID   = Shader.PropertyToID("_FogLightPos");
+        static readonly int _ColorID = Shader.PropertyToID("_FogLightColor");
+        static readonly int _RangeID = Shader.PropertyToID("_FogLightRange");
+
+        const int MAX = 16;
+        Vector4[] pos   = new Vector4[MAX];
+        Vector4[] color = new Vector4[MAX];
+        float[]   range = new float[MAX];
+
+        public override void Execute(ScriptableRenderContext ctx, ref RenderingData data)
+        {
+            int count = 0;
+            foreach (var vl in data.lightData.visibleLights)
+            {
+                if (count >= MAX) break;
+                if (vl.lightType == LightType.Point || vl.lightType == LightType.Spot)
+                {
+                    pos[count]   = vl.light.transform.position;
+                    color[count] = vl.finalColor;
+                    range[count] = vl.range;
+                    count++;
+                }
+            }
+
+            var cmd = CommandBufferPool.Get("FogLights");
+            cmd.SetGlobalInt(_CountID, count);
+            cmd.SetGlobalVectorArray(_PosID, pos);
+            cmd.SetGlobalVectorArray(_ColorID, color);
+            cmd.SetGlobalFloatArray(_RangeID, range);
+            ctx.ExecuteCommandBuffer(cmd);
+            CommandBufferPool.Release(cmd);
+
+            Debug.Log($"[FogLights] Passed {count} lights to shader");
+        }
+    }
+
+    LightsPass pass;
+
+    public override void Create()
+    {
+        pass = new LightsPass { renderPassEvent = RenderPassEvent.BeforeRendering };
+    }
+
+    public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData data)
+    {
+        renderer.EnqueuePass(pass);
+    }
+}