Takes a WebGL Texture and creates a Phaser Texture from it, which is added to the Texture Manager using the given key.
This allows you to then use the Texture as a normal texture for texture based Game Objects like Sprites.
height arguments are omitted, but the WebGL Texture was created by Phaser's WebGL Renderer
glTexture.height properties, these values will be used instead.
This is a WebGL only feature.
The unique string-based key of the Texture.
The source Render Texture.
The new width of the Texture. Read from
The new height of the Texture. Read from
The Texture that was created, or
null if the key is already in use.