From a1bb3f99ff08cfb43cdceb537299c38197a73974 Mon Sep 17 00:00:00 2001
From: deepkolos <deepkolos@qq.com>
Date: Mon, 11 Mar 2024 17:10:58 +0800
Subject: [PATCH] fix: trail uv fraction

---
 src/TrailMaterial.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/TrailMaterial.ts b/src/TrailMaterial.ts
index ba7d952..7e40b30 100644
--- a/src/TrailMaterial.ts
+++ b/src/TrailMaterial.ts
@@ -34,8 +34,8 @@ vec2 uv; // SG使用
 
 void main() {
   brushData = texture2D(brushDataTex, vec2(brushId / cursor.w, 0));
-  float fraction = (timeInfo.x - brushData.w) / (timeInfo.y * (cursor.z / cursor.w));
   vBirthTime = brushData.w;
+  float fraction = (timeInfo.x - brushData.w) / timeInfo.y;
   uv = vec2(fraction, brushVertexId / brushVertexLen);
 
   vec4 positionV4 = vec4(position, 1.0);