unity Kinect v2 with MS-SDK20绿屏抠像shader修改 透明背景

用的是kinect2.0

 Kinect v2 with MS-SDK20插件

例子中的默认greenscreen里面是绿色的,要求改成透明的,下面直接上代码

改完后放背景看看吧 是不是透明了

Shader "DX11/GreenScreenShader" { SubShader { //透明就需要这个  Blend SrcAlpha OneMinusSrcAlpha Tags {"Queue"="AlphaTest" }   Pass {  CGPROGRAM #pragma target 5.0  #pragma vertex vert #pragma fragment frag  #include "UnityCG.cginc"  Texture2D _MainTex;  sampler SampleType;  struct vs_input {     float4 pos : POSITION;     float2 tex : TEXCOORD0; };  StructuredBuffer<float2> depthCoordinates; StructuredBuffer<float> bodyIndexBuffer;  struct ps_input {     float4 pos : SV_POSITION;     float2 tex : TEXCOORD0; };  ps_input vert (vs_input v) {     ps_input o;     o.pos = mul (UNITY_MATRIX_MVP, v.pos);     o.tex = v.tex;     // Flip x texture coordinate to mimic mirror.     o.tex.x = 1 - v.tex.x;     return o; }  float4 frag (ps_input i, in uint id : SV_InstanceID) :COLOR {     float4 o;          int colorWidth = (int)(i.tex.x * (float)1920);     int colorHeight = (int)(i.tex.y * (float)1080);     int colorIndex = (int)(colorWidth + colorHeight * (float)1920);          o = float4(0, 0, 0, 0);  //<-- Here I set alpha to zero in my version                               // to feed into Transparent/cutout/diffuse          if ((!isinf(depthCoordinates[colorIndex].x) && !isnan(depthCoordinates[colorIndex].x) && depthCoordinates[colorIndex].x != 0) ||          !isinf(depthCoordinates[colorIndex].y) && !isnan(depthCoordinates[colorIndex].y) && depthCoordinates[colorIndex].y != 0)     {         // We have valid depth data coordinates from our coordinate mapper.  Find player mask from corresponding depth points.         float player = bodyIndexBuffer[(int)depthCoordinates[colorIndex].x + (int)(depthCoordinates[colorIndex].y * 512)];         if (player != 255)         {             o = _MainTex.Sample(SampleType, i.tex);         }else o.a = o.rgb;      }            //    float4 sampler2[9];//    float4 minValue = float4(255,255,255,255);//    for (int i = 0; i < 9; ++i)//    {        //sampler2[i] = texture2D(SampleType, gl_TexCoord[0].st + tc_offset[i]);        //minValue = min(minValue, sampler2[i]);//    }     return o; } ENDCG  } }  Fallback Off}