Freaky Thargoids OXP

Freaky Thargoids is an OXP designed to demonstrate fragment shaders in Oolite. It may be downloaded here.

The OXP replaces the Thargoid warship and Thargoid robot fighter with versions that emit pulsing, coloured light. This is effected by means of a fragment shader which uses a second texture specifying the colour of light and (as its alpha channel) the phase of the light animation, which is driven by a timer provided to fragment shaders by Oolite.