Azure Kinect에서 초록색 배경이 없는 검은색 키 같은 거.

Shader "Custom/ColorutoutPoint" {
    Properties{
     _Size("ShaderSize", Float) = 1.000000
     _PointSize("PointSize", Float) = 5.0
     _Color("Color", Color) = (1,1,1,1)

    }
        SubShader{
         Tags {"Queue" = "Geometry-1"}

         Pass {
                        Zwrite On
                        ColorMask 0

        CGPROGRAM
        #pragma vertex vert
        #pragma fragment frag
        #pragma target 2.0
        #include "UnityCG.cginc"
        #pragma multi_compile_fog
        #define USING_FOG (defined(FOG_LINEAR) || defined(FOG_EXP) || defined(FOG_EXP2))

        float _Size;
        float _PointSize;

        // uniforms
        // vertex shader input data
        struct appdata {
          float3 pos : POSITION;
          half4 color : COLOR;
          UNITY_VERTEX_INPUT_INSTANCE_ID
        };

        // vertex-to-fragment interpolators
        struct v2f {
          float psize : PSIZE;
          fixed4 color : COLOR0;
          #if USING_FOG
            fixed fog : TEXCOORD0;
          #endif
          float4 pos : SV_POSITION;
          UNITY_VERTEX_OUTPUT_STEREO
        };

        // vertex shader
        v2f vert(appdata IN) {
            IN.pos.xyz = IN.pos.xyz * _Size;

          v2f o;
          UNITY_SETUP_INSTANCE_ID(IN);
          UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
          half4 color = IN.color;
          float3 eyePos = mul(UNITY_MATRIX_MV, float4(IN.pos,1)).xyz;
          half3 viewDir = 0.0;
          o.color = saturate(color);
          // compute texture coordinates
          // fog
          #if USING_FOG
            float fogCoord = length(eyePos.xyz); // radial fog distance
            UNITY_CALC_FOG_FACTOR_RAW(fogCoord);
            o.fog = saturate(unityFogFactor);
          #endif
            // transform position
            o.pos = UnityObjectToClipPos(IN.pos);
            o.psize = _PointSize;
            return o;
          }

        // fragment shader
        fixed4 frag(v2f IN) : SV_Target {
          fixed4 col;
          col = IN.color;
          // fog
          #if USING_FOG
            col.rgb = lerp(unity_FogColor.rgb, col.rgb, IN.fog);
          #endif
          return col;
        }
        ENDCG
         }
    }
}

        //背景除去用メッシュ生成
        if (Input.GetKeyDown(KeyCode.Space))
        {
            if (GameObject.Find("CutoutMesh"))
            {
                GameObject obj = GameObject.Find("CutoutMesh");
                Destroy(obj);
            }
            verticesGreenBack = vertices;
            greenBack = new GameObject();
            greenBack.name = "CutoutMesh";
            greenBack.AddComponent<MeshFilter>();
            meshRendererG = greenBack.AddComponent<MeshRenderer>();

            meshG = new Mesh();

            //65535点以上描画する際に下記を記述
            meshG.indexFormat = UnityEngine.Rendering.IndexFormat.UInt32;

            //頂点座標と色をmeshに渡す
            meshG.vertices = verticesGreenBack;

            //リストに格納した番号の頂点座標を点として描画
            meshG.SetIndices(indices, MeshTopology.Points, 0);

            //メッシュをこのオブジェクトのMeshFilterに適用
            greenBack.GetComponent<MeshFilter>().mesh = meshG;

            meshRendererG.material = materialG;
        }

        // 削除
        if (Input.GetKey(KeyCode.Backspace))
        {
            GameObject obj = GameObject.Find("CutoutMesh");
            Destroy(obj);
        }