Debug.currentAlpha wasn't being used to set the alpha of the Debug context at all (was always set to 1) but now updates the alpha of the Debug context before anything is rendered to it (thanks @wayfu phaserjs#1888)

Author: photonstorm

README.md

@@ -368,6 +368,7 @@ Version 2.4 - "Katar" - in dev
 * The Asset Pack JSON Format example has been updated to include new and missing file formats (thanks @rblopes #1808)
 * RenderTexture now takes the display objects alpha into consideration when rendering it, before it would always reset worldAlpha to 1 before rendering, thus ignoring any alpha that may be set.
 * P2.enableBody now checks if an anchor exists on target object before attempting to set its value (thanks @standardgaussian  #1885)
+* Debug.currentAlpha wasn't being used to set the alpha of the Debug context at all (was always set to 1) but now updates the alpha of the Debug context before anything is rendered to it (thanks @wayfu #1888)
 
 ### Bug Fixes
 

src/utils/Debug.js

@@ -76,7 +76,7 @@ Phaser.Utils.Debug = function (game) {
     this.currentY = 0;
 
     /**
-    * @property {number} currentAlpha - The current alpha the debug information will be rendered at.
+    * @property {number} currentAlpha - The alpha of the Debug context, set before all debug information is rendered to it.
     * @default
     */
     this.currentAlpha = 1;
@@ -171,7 +171,6 @@ Phaser.Utils.Debug.prototype = {
         this.currentX = x;
         this.currentY = y;
         this.currentColor = color;
-        this.currentAlpha = this.context.globalAlpha;
         this.columnWidth = columnWidth;
 
         this.dirty = true;
@@ -181,7 +180,7 @@ Phaser.Utils.Debug.prototype = {
         this.context.strokeStyle = color;
         this.context.fillStyle = color;
         this.context.font = this.font;
-        this.context.globalAlpha = 1;
+        this.context.globalAlpha = this.currentAlpha;
 
     },
 
@@ -194,7 +193,6 @@ Phaser.Utils.Debug.prototype = {
     stop: function () {
 
         this.context.restore();
-        this.context.globalAlpha = this.currentAlpha;
 
     },