From 9fdfd609dc5f250ddcbc1aef87619ea0b0e0806c Mon Sep 17 00:00:00 2001
From: Dave Pagurek <davepagurek@gmail.com>
Date: Sat, 18 Jan 2025 11:27:46 -0500
Subject: [PATCH] Add 0 check before dividing color by alpha

---
 src/webgl/shaders/phong.frag | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/webgl/shaders/phong.frag b/src/webgl/shaders/phong.frag
index 74c5206d95..d4d2205b80 100644
--- a/src/webgl/shaders/phong.frag
+++ b/src/webgl/shaders/phong.frag
@@ -49,7 +49,7 @@ void main(void) {
   inputs.color = isTexture
       ? TEXTURE(uSampler, vTexCoord) * uTint/255.
       : vColor;
-  if (isTexture) {
+  if (isTexture && inputs.color.a > 0.0) {
     // Textures come in with premultiplied alpha. Temporarily unpremultiply it
     // so hooks users don't have to think about premultiplied alpha.
     inputs.color.rgb /= inputs.color.a;