i tried :(

Assets/Scenes/Bloody Mary.unity

@@ -416,11 +416,11 @@ PrefabInstance:
     m_Modifications:
     - target: {fileID: 320690117028550720, guid: 99a6ff8b9591949439b620b13bd249a4, type: 3}
       propertyPath: m_LocalPosition.x
-      value: -2.8340137
+      value: -15.03
       objectReference: {fileID: 0}
     - target: {fileID: 320690117028550720, guid: 99a6ff8b9591949439b620b13bd249a4, type: 3}
       propertyPath: m_LocalPosition.y
-      value: -3.6601481
+      value: -8.88
       objectReference: {fileID: 0}
     - target: {fileID: 320690117028550720, guid: 99a6ff8b9591949439b620b13bd249a4, type: 3}
       propertyPath: m_LocalPosition.z
@@ -881,11 +881,11 @@ PrefabInstance:
     m_Modifications:
     - target: {fileID: 320690117028550720, guid: 30e0cc55a67f02d4f92b2677ec4b1511, type: 3}
       propertyPath: m_LocalPosition.x
-      value: -0.7082175
+      value: -12.904203
       objectReference: {fileID: 0}
     - target: {fileID: 320690117028550720, guid: 30e0cc55a67f02d4f92b2677ec4b1511, type: 3}
       propertyPath: m_LocalPosition.y
-      value: -0.44170734
+      value: -5.661559
       objectReference: {fileID: 0}
     - target: {fileID: 320690117028550720, guid: 30e0cc55a67f02d4f92b2677ec4b1511, type: 3}
       propertyPath: m_LocalPosition.z

Assets/Scripts/BloodComputeShader.cs

@@ -1,5 +1,6 @@
 using System.Collections;
 using System.Collections.Generic;
+using System.Linq;
 using ComputeShaderUtility;
 using UnityEngine;
 using UnityEngine.Rendering;
@@ -12,9 +13,15 @@ public struct Droplet
     public uint airborne;
 }
 
+public struct Cum
+{
+    public Vector3 dir;
+    public float power;
+}
+
 public class BloodComputeShader : MonoBehaviour
 {
-    public static BloodComputeShader Instance {  get; private set; }
+    public static BloodComputeShader Instance { get; private set; }
     public int numParticles = 1000;
 
     public ComputeShader bloodCompute;
@@ -142,7 +149,7 @@ public class BloodComputeShader : MonoBehaviour
         }
 
         bool putBuffer = false;
-        uint[] bufferData = new uint[] {0,0};
+        uint[] bufferData = new uint[] { 0, 0 };
 
         if (readbackRequest.done)
         {
@@ -167,8 +174,9 @@ public class BloodComputeShader : MonoBehaviour
             }
 
             // Blood hitting the floor
-            if (bufferData[1] > 0) {
-                splatterVolume += bufferData[1]/25.0f;
+            if (bufferData[1] > 0)
+            {
+                splatterVolume += bufferData[1] / 25.0f;
 
                 // Debug.Log("splat x" + bufferData[1]);
 
@@ -179,7 +187,8 @@ public class BloodComputeShader : MonoBehaviour
             RequestAsyncReadback();
         }
 
-        if (putBuffer) {
+        if (putBuffer)
+        {
             numParticlesConsumedBuffer.SetData(bufferData);
             bloodCompute.SetBuffer(UpdateDustKernel, "numParticlesConsumed", numParticlesConsumedBuffer);
 
@@ -226,7 +235,6 @@ public class BloodComputeShader : MonoBehaviour
         uint i = bufferLookPointer;
         int found = 0;
 
-        Droplet[] particles = new Droplet[numParticles];
         var as_Particles = freeBloodReadRequest.GetData<Droplet>().ToArray();
         int length = as_Particles.Length;
         // particleBuffer.GetData(particles);
@@ -260,13 +268,13 @@ public class BloodComputeShader : MonoBehaviour
         // Test for race conditions
         // yield return new WaitForSeconds(1.0f);
 
-        bloodCompute.SetFloat("particleVel", power/4.0f);
+        bloodCompute.SetFloat("particleVel", power / 4.0f);
         bloodCompute.SetVector("particleInitPos", loc);
         bloodCompute.SetInt("particlesToInitialize", found);
 
         Vector3 pow = Random.insideUnitSphere * power;
         pow.z = Mathf.Abs(pow.z);
-        bloodCompute.SetVector("initialVelocity",pow);
+        bloodCompute.SetVector("initialVelocity", pow);
 
         ComputeHelper.Dispatch(bloodCompute, amount, 1, 1, InitDustKernel);
 
@@ -275,6 +283,80 @@ public class BloodComputeShader : MonoBehaviour
         yield return null;
     }
 
+    public void createBloodButBetter(Vector3 pos, int amount, float power, Cum[] dirs)
+    {
+        StartCoroutine(penisBlood2(pos, amount, power, dirs));
+    }
+
+    IEnumerator penisBlood2(Vector3 loc, int amount, float power, Cum[] dirs)
+    {
+        RequestAllBloodStates();
+
+        // Wait until we get the state of all the particles from the gpu
+        while (!freeBloodReadRequest.done)
+        {
+            yield return new WaitForEndOfFrame();
+        }
+
+        // Find N particles which are disabled
+
+        uint i = bufferLookPointer;
+        int found = 0;
+
+        var as_Particles = freeBloodReadRequest.GetData<Droplet>().ToArray();
+        int length = as_Particles.Length;
+        // particleBuffer.GetData(particles);
+
+        uint[] particleIndeces = new uint[amount];
+
+        // oof
+        while (i < numParticles)
+        {
+            if (as_Particles[i % (length - 1)].enabled == 0)
+            { // Found unused particle
+                particleIndeces[found] = i;
+                found++;
+
+                if (found >= amount)
+                    break;
+            }
+
+            i++;
+        }
+
+        bufferLookPointer = (uint)((bufferLookPointer + amount) % numParticles);
+
+        // Debug.Log(string.Join(", ", particleIndeces));
+
+
+        // Test for race conditions
+        // yield return new WaitForSeconds(1.0f);
+
+        bloodCompute.SetVector("particleInitPos", loc);
+
+        int particlesPerLoad = found / dirs.Length;
+
+        for (int idx = 0; idx < dirs.Length; idx++)
+        {
+            Vector3 pow = dirs[idx].dir * power;
+            pow.z = Mathf.Abs(pow.z);
+            bloodCompute.SetVector("initialVelocity", pow);
+
+            bloodCompute.SetFloat("particleVel", dirs[idx].power);
+            bloodCompute.SetInt("particlesToInitialize", particlesPerLoad);
+
+            // send data to gpu
+            freeParticleBuffer.SetData(particleIndeces.Take<uint>(particlesPerLoad).ToArray());
+            bloodCompute.SetBuffer(InitDustKernel, "freeParticles", freeParticleBuffer);
+
+            ComputeHelper.Dispatch(bloodCompute, amount, 1, 1, InitDustKernel);
+        }
+
+        activeParticles += found;
+
+        yield return null;
+    }
+
     void OnDestroy()
     {
         ComputeHelper.Release(particleBuffer, positionBuffer, argsBuffer, numParticlesConsumedBuffer, freeParticleBuffer);
@@ -282,6 +364,13 @@ public class BloodComputeShader : MonoBehaviour
 
     public void createBloodTest(int amount)
     {
-        createBlood(Vector3.zero, amount, 10.0f);
+        // createBlood(Vector3.zero, amount, 10.0f);
+        Cum[] dirs = {
+            // Random.insideUnitSphere,
+            new Cum {dir= Vector3.zero, power= 10.0f},
+            new Cum {dir= Random.insideUnitSphere, power= 2.5f}
+        };
+
+        createBloodButBetter(Vector3.zero, amount, 10.0f, dirs);
     }
 }