Rain

• 메쉬 생성해서 텍스쳐 입히고 메쉬 자체를 흘려내리기.
• Geometry Shader이용하기
• PostProcessing으로 처리하기(부하크고 각도 변화 힘듬)
• 파티클로 처리하기
  • 컬링 유의
  • https://blog.unity.com/technology/unitytips-particlesystem-performance-culling

Ref

• https://github.com/tsugi/exampleunityangrybots/tree/master/Assets/Scripts/Rain
• SIGGRAPH2011-FastMobileShaders
• Rain And Snow Effect With Geometry Shaders In Unity
  • https://github.com/tiredamage42/RainSnowGeometryShader
  • https://seblagarde.wordpress.com/2012/12/27/water-drop-2a-dynamic-rain-and-its-effects/
• Artist-directable Real-Time Rain Rendering in City Environments
  • SIGGRAPH2006
  • GDC06
• ShaderX7 Advanced Rendering Techniques
  • 5.1 Dynamic Weather Effects
• rain_streak 이미지들
• https://developer.download.nvidia.com/SDK/10/direct3d/samples.html#rain