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Posted 23 October 2012 - 08:19 AM
Posted 23 October 2012 - 04:50 PM
Posted 25 October 2012 - 04:08 PM
It's been done. The STALKER games, ever since Stalker... 2? Clear Skies I think? Had a "Rain Map". Heightmap/Ovehread static shadow map like used for collision of raindrops, further used for applying a dynamic "wet" shader onto anything the rain could "see". Halo Reach actually used scene depth and normals for screen space particle collisions.
So, it's a nice idea that would work, because it already has