Shader that "emulates" the rendering style of ps1
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Marco Dsoft Marco Dsoft
Marco Dsoft and Marco Dsoft Billboard script (billboard.cs in Shaders/Billboard)
Removed vstool directory
Latest commit d675407 Jun 30, 2016

README.md

psx_retroshader

Shaders collection for Unity that "emulates" the rendering style of ps1

WebPlayer (it's an old build): https://dl.dropboxusercontent.com/u/1050404/psx/psx.html

You can see it in action here: https://www.youtube.com/watch?v=MxcLA--2v-Y

ScreenShot ScreenShot

#Content & usage psx_retroshader includes 4 shaders, plus a simple posterize image effect (cPrecision.cs):

  • unlit
  • vertex lit
  • trasparent unlit
  • trasparent vertex lit
  • Reflective shaders (Add & Mult variants)

Vertex lit shaders now supports spotlights too!

Example of the posterize shader: ScreenShot

All shaders supports Fog, polygon cut-out & distortion amount.

  • Fog color & distance is driven by Unity fog settings (remember to set as linear fog).
  • Polygon cutout is driven by tha alpha channel of Fog Color, it works by cutting every polygon that are greater in distance than fogstart+fogcolor.alpha (fog color is in range 0-1 but is multiplied in the shader by 255)
  • Distortion amount is driven by the alpha channel of unity's ambient color, you can adjust it as you please.

#Warning Like the original ps1 this shader use affine texture mapping, so if you apply a texture on a large quad you'll see it very distored. To avoid excessive distortion you have to add triangless to the mesh.

Example:

ScreenShot

As you can see the effect is better when the mesh is subdivided (bottom left mesh) instead of when the mesh have a low poly count (top right mesh)