When using RenderTexture.fill, the alpha argument would be ignored in Canvas mode. It's now used when filling the RenderTexture.

Author: photonstorm

src/gameobjects/rendertexture/RenderTexture.js

@@ -409,25 +409,25 @@ var RenderTexture = new Class({
     {
         if (alpha === undefined) { alpha = 1; }
 
-        var ur = ((rgb >> 16)|0) & 0xff;
-        var ug = ((rgb >> 8)|0) & 0xff;
-        var ub = (rgb|0) & 0xff;
+        var r = ((rgb >> 16) | 0) & 0xff;
+        var g = ((rgb >> 8) | 0) & 0xff;
+        var b = (rgb | 0) & 0xff;
 
         if (this.gl)
         {
             this.renderer.setFramebuffer(this.framebuffer, true);
 
             var gl = this.gl;
 
-            gl.clearColor(ur / 255.0, ug / 255.0, ub / 255.0, alpha);
+            gl.clearColor(r / 255, g / 255, b / 255, alpha);
 
             gl.clear(gl.COLOR_BUFFER_BIT);
 
             this.renderer.setFramebuffer(null, true);
         }
         else
         {
-            this.context.fillStyle = 'rgb(' + ur + ',' + ug + ',' + ub + ')';
+            this.context.fillStyle = 'rgba(' + r + ',' + g + ',' + b + ',' + alpha + ')';
             this.context.fillRect(0, 0, this.canvas.width, this.canvas.height);
         }