From 761767795cdbebb3d3f1a86147eac9691ed4d8e2 Mon Sep 17 00:00:00 2001
From: Dmitry Koteykin <193649479+notKitory@users.noreply.github.com>
Date: Mon, 27 Jul 2026 19:57:35 +0000
Subject: [PATCH] Fix significant FPS drop with mask usage.

---
 src/renderer/webgl/wrappers/WebGLBufferWrapper.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/renderer/webgl/wrappers/WebGLBufferWrapper.js b/src/renderer/webgl/wrappers/WebGLBufferWrapper.js
index 966981185a..7679e240a4 100644
--- a/src/renderer/webgl/wrappers/WebGLBufferWrapper.js
+++ b/src/renderer/webgl/wrappers/WebGLBufferWrapper.js
@@ -203,6 +203,15 @@ var WebGLBufferWrapper = new Class({
 
         this.bind();
 
+        if (this.bufferUsage !== gl.STATIC_DRAW)
+        {
+            gl.bufferData(
+                this.bufferType,
+                this.dataBuffer.byteLength,
+                this.bufferUsage
+            );
+        }
+
         if (offset === undefined)
         {
             offset = 0;