Get a temporary render target. You should dispose the returned handle when you're done to return the textures to the pool.
Width of the render target you want.
Height of the render target you want.
The format for the color buffer. If set to default we'll use whatever the current pipeline is using.
The format for the depth buffer
The number of msaa samples you'd like. Msaa render textures are a pain in the ass so you're probably gonna regret trying to use this.
Number of mips you want in this texture. You probably don't want this unless you want to generate mips in a second pass
A RenderTarget that is ready to render to