Merge pull request phaserjs#1 from photonstorm/master

Cleaned down, ready for new WebGL Renderer.

Author: vbornand

v3/src/renderer/webgl/BatchManager.js …/renderer/archived-webgl/BatchManager.jsv3/src/renderer/webgl/BatchManager.js renamed to v3/src/renderer/archived-webgl/BatchManager.js v3/src/renderer/webgl/BatchManager.js renamed to v3/src/renderer/archived-webgl/BatchManager.js

@@ -0,0 +1,23 @@
+var CONST = require('../../../const');
+
+var CreateEmptyTexture = function (gl, width, height, scaleMode, textureIndex)
+{
+    var texture = gl.createTexture();
+    var glScaleMode = (scaleMode === CONST.scaleModes.LINEAR) ? gl.LINEAR : gl.NEAREST;
+
+    gl.activeTexture(gl.TEXTURE0 + textureIndex);
+    gl.bindTexture(gl.TEXTURE_2D, texture);
+
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+
+    //  We'll read from this texture, but it won't have mipmaps, so turn them off:
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, glScaleMode);
+    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, glScaleMode);
+
+    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
+
+    return texture;
+};
+
+module.exports = CreateEmptyTexture;