升级obi

Assets/Obi/Scripts/Common/Backends/Burst/Solver/UpdateParticleLifetimesJob.cs

@@ -0,0 +1,41 @@
+#if (OBI_BURST && OBI_MATHEMATICS && OBI_COLLECTIONS)
+using UnityEngine;
+using Unity.Jobs;
+using Unity.Collections;
+using Unity.Collections.LowLevel.Unsafe;
+using Unity.Mathematics;
+using Unity.Burst;
+using System;
+using System.Collections;
+using System.Threading;
+
+namespace Obi
+{
+    [BurstCompile]
+    unsafe struct UpdateParticleLifetimesJob : IJobParallelFor
+    {
+        [ReadOnly] public NativeArray<int> activeParticles;
+        [NativeDisableParallelForRestriction] public NativeArray<float> life;
+
+        [NativeDisableParallelForRestriction] public NativeArray<int> deadParticles;
+        [NativeDisableContainerSafetyRestriction] public NativeReference<int> deadParticleCount;
+
+        [ReadOnly] public float dt;
+
+        public void Execute(int i)
+        {
+            int p = activeParticles[i];
+
+            life[p] -= dt;
+
+            if (life[p] <= 0)
+            {
+                int* countRef = (int*)deadParticleCount.GetUnsafePtr();
+                int count = Interlocked.Increment(ref countRef[0]) - 1;
+                deadParticles[count] = p;
+                life[p] = 0;
+            }
+        }
+    }
+}
+#endif