// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "QFX/SF_VFX/ScanCutter" {
	Properties{
		[HDR]_TintColor("Tint Color", Color) = (0.5,0.5,0.5,0.5)
		_InvFade("Soft Particles Factor", Float) = 1.0
	}
	
	Category{
        Tags { "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent" }
        Blend SrcAlpha OneMinusSrcAlpha
        ColorMask RGB
        Cull Off Lighting Off ZWrite Off
    
        SubShader {
            Pass {
            CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #pragma multi_compile_particles
                #pragma multi_compile_fog
    
                #include "UnityCG.cginc"
    
                fixed4 _TintColor;
                float _POW;
    
                struct appdata_t {
                    float4 vertex : POSITION;
                    fixed4 color : COLOR;
                    float2 texcoord : TEXCOORD0;
                };
    
                struct v2f {
                    float4 vertex : SV_POSITION;
                    fixed4 color : COLOR;
                    float2 texcoord : TEXCOORD0;
                    UNITY_FOG_COORDS(1)
                    #ifdef SOFTPARTICLES_ON
                    float4 projPos : TEXCOORD2;
                    #endif
                };
    
                float4 _MainTex_ST;
    
                v2f vert(appdata_t v)
                {
                    v2f o;
                    o.vertex = UnityObjectToClipPos(v.vertex);
                    #ifdef SOFTPARTICLES_ON
                    o.projPos = ComputeScreenPos(o.vertex);
                    COMPUTE_EYEDEPTH(o.projPos.z);
                    #endif
                    o.color = v.color;
                    o.texcoord = TRANSFORM_TEX(v.texcoord,_MainTex);
                    UNITY_TRANSFER_FOG(o,o.vertex);
                    return o;
                }
    
                sampler2D_float _CameraDepthTexture;
                float _InvFade;
    
                float4 frag(v2f i) : SV_Target
                {
                    float fade = 0;
                    #ifdef SOFTPARTICLES_ON
                    float sceneZ = LinearEyeDepth(SAMPLE_DEPTH_TEXTURE_PROJ(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos)));
                    float partZ = i.projPos.z;
                    fade = saturate(_InvFade * (sceneZ - partZ));
                    #endif
                    float4 col = 2.0f * i.color * _TintColor * (1 - fade);
                    UNITY_APPLY_FOG_COLOR(i.fogCoord, col, fixed4(0,0,0,0)); // fog towards black due to our blend mode
                    col.a = saturate(col.a);
                    return col;
                }
            ENDCG
            }
        }
	}
}