Creates a texture from a canvas element.
This is almost the same as the base [page:Texture Texture] class, except
that it sets [page:Texture.needsUpdate needsUpdate] to `true` immediately.
[page:HTMLElement canvas] -- The HTML canvas element from which to load
the texture.
[page:Constant mapping] -- How the image is applied to the object. An
object type of [page:Textures THREE.UVMapping]. See [page:Textures mapping constants] for other choices.
[page:Constant wrapS] -- The default is [page:Textures THREE.ClampToEdgeWrapping].
See [page:Textures wrap mode constants] for
other choices.
[page:Constant wrapT] -- The default is [page:Textures THREE.ClampToEdgeWrapping].
See [page:Textures wrap mode constants] for
other choices.
[page:Constant magFilter] -- How the texture is sampled when a texel
covers more than one pixel. The default is [page:Textures THREE.LinearFilter].
See [page:Textures magnification filter constants]
for other choices.
[page:Constant minFilter] -- How the texture is sampled when a texel
covers less than one pixel. The default is [page:Textures THREE.LinearMipmapLinearFilter].
See [page:Textures minification filter constants] for other choices.
[page:Constant format] -- The format used in the texture. See
[page:Textures format constants] for other choices.
[page:Constant type] -- Default is [page:Textures THREE.UnsignedByteType].
See [page:Textures type constants] for other choices.
[page:Number anisotropy] -- The number of samples taken along the axis
through the pixel that has the highest density of texels. By default, this
value is `1`. A higher value gives a less blurry result than a basic mipmap,
at the cost of more texture samples being used. Use
[page:WebGLrenderer.getMaxAnisotropy renderer.getMaxAnisotropy]() to find
the maximum valid anisotropy value for the GPU; this value is usually a
power of 2.
See the base [page:Texture Texture] class for common properties.
Read-only flag to check if a given object is of type [name].
True by default. This is required so that the canvas data is loaded.
See the base [page:Texture Texture] class for common methods.
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]