This release of Ya3dag features reflective/refractive water and surfaces and portals (as known from Quake3).
Summary of changes for the update of Ya3dag V 1.31.
* Added entities misc_portal_camera misc_portal_surface.
This are the Quake3 entities to setup portals.
* Static map models (.bsp models) can have areas.
Surfaces of a area are drawn only, if the viewpoint is
inside this area or the area is visible (through a
* Shader language additions done for Ya3dag.
* alphagen distance
* rgbgen distance
* alphagen lightstyle
* rgbgen lightstyle