From 7edc856154b67e29a4c3a0e1d63431e1aab58fd1 Mon Sep 17 00:00:00 2001
From: Richard Davey <rich@photonstorm.com>
Date: Mon, 27 Feb 2023 13:47:33 +0000
Subject: [PATCH] Added setGlowQuality function

---
 src/renderer/webgl/Utils.js | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/src/renderer/webgl/Utils.js b/src/renderer/webgl/Utils.js
index b08bec4de..a2c72113d 100644
--- a/src/renderer/webgl/Utils.js
+++ b/src/renderer/webgl/Utils.js
@@ -169,5 +169,38 @@ module.exports = {
         fragmentShaderSource = fragmentShaderSource.replace(/%count%/gi, maxTextures.toString());
 
         return fragmentShaderSource.replace(/%forloop%/gi, src);
+    },
+
+    /**
+     * Takes the Glow FX Shader source and parses out the __SIZE__ and __DIST__
+     * consts with the configuration values.
+     *
+     * @function Phaser.Renderer.WebGL.Utils.setGlowQuality
+     * @since 3.60.0
+     *
+     * @param {string} shader - The Fragment Shader source code to operate on.
+     * @param {Phaser.Game} game - The Phaser Game instance.
+     * @param {number} [quality] - The quality of the glow (defaults to 0.1)
+     * @param {number} [distance] - The distance of the glow (defaults to 10)
+     *
+     * @return {string} The modified Fragment Shader source.
+     */
+    setGlowQuality: function (shader, game, quality, distance)
+    {
+        if (quality === undefined)
+        {
+            quality = game.config.glowFXQuality;
+        }
+
+        if (distance === undefined)
+        {
+            distance = game.config.glowFXDistance;
+        }
+
+        shader = shader.replace(/__SIZE__/gi, (1 / quality / distance).toFixed(7));
+        shader = shader.replace(/__DIST__/gi, distance.toFixed(0) + '.0');
+
+        return shader;
     }
+
 };