Update: 原版的投影器在5.2下有异常,导致预览画刷的时候显示异常,并且貌似也不能刷出正确的图形,所以我修改了BrushPreview的shader,使其在5.2下正常显示。
[csharp] view plain copy
Shader "Hidden/BrushPreview"
{
Properties {
_Transp ("Transparency", Range(0,1)) = 1
_MainTex ("Texture", 2D) = "" { }
_MaskTex ("Texture", 2D) = "" { }
}
SubShader{
Tags{ "Queue" = "Transparent" }
ColorMask RGB
Blend SrcAlpha OneMinusSrcAlpha
Pass{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata_t {
float4 vertex : POSITION;
float2 texcoord : TEXCOORD0;
};
float4x4 _Projector;
float4x4 _ProjectorClip;
struct v2f {
float4 vertex : SV_POSITION;
float4 texcoord : TEXCOORD0;
};
sampler2D _MainTex;
sampler2D _MaskTex;
float4 _MainTex_ST;
float _Transp;
v2f vert(appdata_t v)
{
v2f o;
o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
o.texcoord = mul(_Projector, v.vertex);
return o;
}
fixed4 frag(v2f i) : SV_Target
{
fixed4 colMain = tex2Dproj(_MainTex, UNITY_PROJ_COORD(i.texcoord));
fixed4 colMask = tex2Dproj(_MaskTex, UNITY_PROJ_COORD(i.texcoord));
fixed4 col = fixed4(colMain.x,colMain.y,colMain.z, colMask.a);
return col;
}
ENDCG
}
}
}
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