Showcase and tutorial: https://youtu.be/j9Ujcwxkf1g
With the new update the visual effect becames fully GPU based. Two new materials for world space and one for screen space. Several material instances are provided with a solid set of textures, and with the texture parameters in the instance it's easy for you to use your own images. Details about the texture import settings in the video tutorial.
All materials provide controllable smooth transition when the light source goes behind an object and a smooth fade effect when the flare approaches the edge of the screen.
