From 72796f99059b951d0e4fdf23ae909ef105713fa9 Mon Sep 17 00:00:00 2001
From: IntegratedQuantum <jahe788@gmail.com>
Date: Sat, 4 Jan 2025 14:22:00 +0100
Subject: [PATCH] Fix buffer overflow in the item drop shader.

should fix #891
---
 assets/cubyz/shaders/item_drop.fs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/assets/cubyz/shaders/item_drop.fs b/assets/cubyz/shaders/item_drop.fs
index 6c9177428..5e50e32ad 100644
--- a/assets/cubyz/shaders/item_drop.fs
+++ b/assets/cubyz/shaders/item_drop.fs
@@ -65,6 +65,7 @@ float ditherThresholds[16] = float[16] (
 
 bool passDitherTest(float alpha) {
 	ivec2 screenPos = ivec2(gl_FragCoord.xy);
+	screenPos &= 3;
 	return alpha > ditherThresholds[screenPos.x*4 + screenPos.y];
 }