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
#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:
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:
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)