The WebGLRenderer.updateCanvasTexture method will now set gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL to true, which should stop issues where you update a Text Game Object, having added a Render Texture or Spine Game Object to the Scene after it, which switches the PMA setting. Fix phaserjs#5064

Author: photonstorm

src/renderer/webgl/WebGLRenderer.js

@@ -2812,6 +2812,7 @@ var WebGLRenderer = new Class({
             gl.bindTexture(gl.TEXTURE_2D, dstTexture);
 
             gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, flipY);
+            gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
 
             gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, srcCanvas);