VegetationTwoPass
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Latest revision as of 23:56, 17 January 2012
Author: Nicholas Francis
[edit] Description
This shader will renders two passes, One doing Cut off, and a second where it renders semitransparent details.
[edit] Usage
Place this shader somewhere in your Assets folder hierarchy. Then, use it on any object where you want Culling off and alpha textures.
[edit] ShaderLab - VegetationTwoPass.shader
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Shader "Nature/Vegetation Two Pass" {
Properties {
_Color ("Main Color", Color) = (.5, .5, .5, .5)
_MainTex ("Base (RGB) Alpha (A)", 2D) = "white" {}
_Cutoff ("Base Alpha cutoff", Range (0,.9)) = .5
}
SubShader {
// Set up basic lighting
Material {
Diffuse [_Color]
Ambient [_Color]
}
Lighting On
// Render both front and back facing polygons.
Cull Off
// first pass:
// render any pixels that are more than [_Cutoff] opaque
Pass {
AlphaTest Greater [_Cutoff]
SetTexture [_MainTex] {
combine texture * primary, texture
}
}
// Second pass:
// render in the semitransparent details.
Pass {
// Dont write to the depth buffer
ZWrite off
// Only render pixels less or equal to the value
AlphaTest LEqual [_Cutoff]
// Set up alpha blending
Blend SrcAlpha OneMinusSrcAlpha
SetTexture [_MainTex] {
combine texture * primary, texture
}
}
}
}
