60 lines
1.5 KiB
Plaintext
60 lines
1.5 KiB
Plaintext
Shader "Unlit/WireframeShader" {
|
|
Properties {
|
|
_WireframeColor("WireframeColor", Color) = (1, 0, 0, 1)
|
|
_Color("Color", Color) = (1, 1, 1, 1)
|
|
_DistanceMultipler("DistanceMultiplier", Range(1, 5)) = 1
|
|
}
|
|
|
|
SubShader {
|
|
Pass {
|
|
CGPROGRAM
|
|
#include "UnityCG.cginc"
|
|
#pragma vertex vert
|
|
#pragma fragment frag
|
|
|
|
half4 _WireframeColor, _Color;
|
|
float _LineThickness, _DistanceMultipler;
|
|
|
|
struct appdata
|
|
{
|
|
float4 vertex : POSITION;
|
|
float4 color : COLOR; // barycentric coords
|
|
UNITY_VERTEX_INPUT_INSTANCE_ID
|
|
};
|
|
|
|
struct v2f
|
|
{
|
|
float4 vertex : SV_POSITION;
|
|
float3 vertexView : TEXCOORD0;
|
|
float3 color: COLOR;
|
|
UNITY_VERTEX_OUTPUT_STEREO
|
|
};
|
|
|
|
v2f vert(appdata v)
|
|
{
|
|
v2f o;
|
|
UNITY_SETUP_INSTANCE_ID(v);
|
|
UNITY_INITIALIZE_OUTPUT(v2f, o);
|
|
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
|
|
o.vertex = UnityObjectToClipPos(v.vertex);
|
|
o.vertexView = UnityObjectToViewPos(v.vertex);
|
|
o.color = v.color;
|
|
return o;
|
|
}
|
|
|
|
fixed4 frag(v2f i) : SV_Target
|
|
{
|
|
// on edge, one or the coordinates is 0
|
|
float closest = min(i.color.x, min(i.color.y, i.color.z));
|
|
|
|
// use distance to make far away edges visible
|
|
float distance = length(i.vertexView) * _DistanceMultipler * 0.02;
|
|
float val = closest/distance;
|
|
|
|
return lerp(_WireframeColor, _Color, clamp(val,0,1));
|
|
}
|
|
ENDCG
|
|
}
|
|
}
|
|
}
|