This function can be used to check whether the given sprite layer resource exists.
It's main purpose is for debugging to check if the resource has yet been created, has since been deleted or if the provided
resource identifier is invalid, such as would be the case for a mistyped variable name.

Return Boolean = DX11 SPRITE LAYER EXISTS(layer)

layer

Dword
The sprite layer resource to check whether it exists.

true if the given sprite layer resource exists, or false otherwise.

SPRITELAYER Functions Menu
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