This class can only be used in combination with WebGLRenderer.copyFramebufferToTexture().
width -- The width of the texture.
height -- The height of the texture.
format -- The format used in the texture. See format constants for other choices.
See the base Texture class for common properties.
True by default. This is required so that the canvas data is loaded.
See the base Texture class for common methods.
For more info on how to obtain the source code of this module see this page.