diff --git a/src/main/java/me/cortex/voxy/client/core/gl/shader/Shader.java b/src/main/java/me/cortex/voxy/client/core/gl/shader/Shader.java
index 57e4acf0..bf0629c8 100644
--- a/src/main/java/me/cortex/voxy/client/core/gl/shader/Shader.java
+++ b/src/main/java/me/cortex/voxy/client/core/gl/shader/Shader.java
@@ -4,6 +4,7 @@ import me.cortex.voxy.client.core.gl.Capabilities;
 import me.cortex.voxy.client.core.gl.GlBuffer;
 import me.cortex.voxy.client.core.gl.GlDebug;
 import me.cortex.voxy.common.Logger;
+import me.cortex.voxy.common.util.ThreadUtils;
 import me.cortex.voxy.common.util.TrackedObject;
 import org.lwjgl.opengl.GL20C;
 import org.lwjgl.system.MemoryStack;
@@ -151,6 +152,7 @@ public class Shader extends TrackedObject {
 
         public T compile() {
             this.defineIf("IS_INTEL", Capabilities.INSTANCE.isIntel);
+            this.defineIf("IS_WINDOWS", ThreadUtils.isWindows);
             return this.constructor.make(this, this.compileToProgram());
         }
 
diff --git a/src/main/java/me/cortex/voxy/common/util/ThreadUtils.java b/src/main/java/me/cortex/voxy/common/util/ThreadUtils.java
index 34f80835..ddd421e3 100644
--- a/src/main/java/me/cortex/voxy/common/util/ThreadUtils.java
+++ b/src/main/java/me/cortex/voxy/common/util/ThreadUtils.java
@@ -13,7 +13,7 @@ public class ThreadUtils {
     public static final int WIN32_THREAD_PRIORITY_LOWEST = -2;
     public static final int WIN32_THREAD_MODE_BACKGROUND_BEGIN = 0x00010000;
     public static final int WIN32_THREAD_MODE_BACKGROUND_END = 0x00020000;
-    private static final boolean isWindows = Platform.get() == Platform.WINDOWS;
+    public static final boolean isWindows = Platform.get() == Platform.WINDOWS;
     private static final long SetThreadPriority;
     private static final long SetThreadSelectedCpuSetMasks;
     private static final long schedSetaffinity;
diff --git a/src/main/resources/assets/voxy/shaders/util/prefixsum/inital3.comp b/src/main/resources/assets/voxy/shaders/util/prefixsum/inital3.comp
index e1863c6d..a73d9302 100644
--- a/src/main/resources/assets/voxy/shaders/util/prefixsum/inital3.comp
+++ b/src/main/resources/assets/voxy/shaders/util/prefixsum/inital3.comp
@@ -93,8 +93,8 @@ void main() {
         barrier();
 
 
+        #ifdef IS_WINDOWS
         //hate amd hate amd hate amd hate amd
-
         uint val = warpPrefixSum[gl_LocalInvocationID.x&3u];
 
         subgroupBarrier();
@@ -105,6 +105,14 @@ void main() {
         if (gl_LocalInvocationID.x<4) {
             warpPrefixSum[gl_LocalInvocationID.x] = extraJank;
         }
+        #else
+        if (gl_LocalInvocationID.x<4) {
+            uint val = warpPrefixSum[gl_SubgroupInvocationID];
+            subgroupBarrier();
+            //Use warp to do entire add in 1 reduction
+            warpPrefixSum[gl_SubgroupInvocationID] = subgroupExclusiveAdd(val);
+        }
+        #endif
 
         memoryBarrierShared();
         barrier();