From e774cc66635b493384142033ab52095ed1881e0a Mon Sep 17 00:00:00 2001
From: rsformoso <rsformoso@gmail.com>
Date: Fri, 20 Mar 2026 23:55:40 +0800
Subject: [PATCH] Add minimum splat size to GetMajorAxes

---
 Assets/vfx-graph-gs/VFXGraphHLSL/GetMajorAxes.hlsl | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Assets/vfx-graph-gs/VFXGraphHLSL/GetMajorAxes.hlsl b/Assets/vfx-graph-gs/VFXGraphHLSL/GetMajorAxes.hlsl
index 9125da6..29de923 100644
--- a/Assets/vfx-graph-gs/VFXGraphHLSL/GetMajorAxes.hlsl
+++ b/Assets/vfx-graph-gs/VFXGraphHLSL/GetMajorAxes.hlsl
@@ -1,3 +1,5 @@
+#define EPSILON 0.0004f
+
 /// Hidden
 float CrossProduct(float2 A, float2 B)
 {
@@ -42,5 +44,15 @@ float4x4 GetMajorAxes(float4x4 Axes, float4x4 AxesProjections)
         result[1].xyz = z_axes;
     }
 
+    if (length(result[0].xyz) < 0.0004)
+    {
+        result[0].xyz = normalize(result[0].xyz) * EPSILON;
+    }
+        
+    if (length(result[1].xyz) < 0.0004)
+    {
+        result[1].xyz = normalize(result[1].xyz) * EPSILON;
+    }
+        
     return result;
 }