Add support for transparencies
Summary
Add support for transparencies so that some kinds of objects, such as glass and particle effects, can be part of the game world.
Example
Some examples are games where see-through objects are needed. For example, the nets in the goal of a hockey stage, particle effects represented as a texture with transparent backgrounds to avoid obstructing the actual particle, and so on.
Benefits
It allows more flexibility and options in the game worlds that can be created and the effects that can be presented.