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// Reference: https://qiita.com/ShirakawaMaru/items/e29d95e86add4ec0e3b7 | |
Shader "Custom/PenTransparent" { | |
SubShader { | |
Pass { | |
CGPROGRAM | |
#pragma vertex vert | |
#pragma fragment frag | |
#pragma target 3.0 | |
struct v2f { | |
float2 uv : TEXCOORD0; | |
}; | |
v2f vert(float4 pos : POSITION, out float4 wpos : SV_POSITION, float2 uv : TEXCOORD0) { | |
v2f o; | |
o.uv = uv; | |
wpos = UnityObjectToClipPos(pos); | |
return o; | |
} | |
float4 frag(v2f i , UNITY_VPOS_TYPE vpos : VPOS) : SV_TARGET { | |
float4 col = {1, 1, 1, 1}; | |
int2 xy = vpos.xy / _ScreenParams.x * 100; | |
col.rgb = ((xy.x+xy.y)&1) ? 1 : ((float) 0xCC / 0xFF); | |
return col; | |
} | |
ENDCG | |
} | |
} | |
} |
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