From fb2d26153d33ec7294e56e9733a562f55fff5465 Mon Sep 17 00:00:00 2001
From: mcrcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Tue, 24 Jun 2025 23:44:15 +1000
Subject: [PATCH] attempt ultimit jank to fix shader

---
 .../voxy/shaders/util/prefixsum/inital3.comp      | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

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 b904ff80..e1863c6d 100644
--- a/src/main/resources/assets/voxy/shaders/util/prefixsum/inital3.comp
+++ b/src/main/resources/assets/voxy/shaders/util/prefixsum/inital3.comp
@@ -92,11 +92,18 @@ void main() {
         memoryBarrierShared();
         barrier();
 
+
+        //hate amd hate amd hate amd hate amd
+
+        uint val = warpPrefixSum[gl_LocalInvocationID.x&3u];
+
+        subgroupBarrier();
+        //Use warp to do entire add in 1 reduction
+        uint extraJank = subgroupExclusiveAdd(val);
+
+        barrier();
         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);
+            warpPrefixSum[gl_LocalInvocationID.x] = extraJank;
         }
 
         memoryBarrierShared();