// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
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Shader "Effect/Mask/Particle/Alpha Blended Premultiply" {
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Properties {
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_MainTex ("Particle Texture", 2D) = "white" {}
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_InvFade ("Soft Particles Factor", Range(0.01,3.0)) = 1.0
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}
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Category {
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Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" "PreviewType"="Plane" }
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Blend One OneMinusSrcAlpha
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ColorMask RGB
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Cull Off Lighting Off ZWrite Off
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SubShader {
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Pass {
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma target 2.0
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#pragma multi_compile_particles
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#include "UnityCG.cginc"
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#include "UnityUI.cginc"
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sampler2D _MainTex;
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fixed4 _TintColor;
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struct appdata_t {
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float4 vertex : POSITION;
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fixed4 color : COLOR;
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float2 texcoord : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct v2f {
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float4 vertex : SV_POSITION;
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fixed4 color : COLOR;
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float4 texcoord : TEXCOORD0;
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#ifdef SOFTPARTICLES_ON
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float4 projPos : TEXCOORD1;
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#endif
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UNITY_VERTEX_OUTPUT_STEREO
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};
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float4 _MainTex_ST;
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v2f vert (appdata_t v)
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{
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v2f o;
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UNITY_SETUP_INSTANCE_ID(v);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
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o.vertex = UnityObjectToClipPos(v.vertex);
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#ifdef SOFTPARTICLES_ON
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o.projPos = ComputeScreenPos (o.vertex);
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COMPUTE_EYEDEPTH(o.projPos.z);
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#endif
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o.color = v.color;
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o.texcoord.xy = TRANSFORM_TEX(v.texcoord,_MainTex).xy;
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o.texcoord.zw=mul(unity_ObjectToWorld,v.vertex).xy;
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return o;
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}
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UNITY_DECLARE_DEPTH_TEXTURE(_CameraDepthTexture);
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float _InvFade;
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float4 _ClipRect;
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float _UseClipRect;
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fixed4 frag (v2f i) : SV_Target
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{
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#ifdef SOFTPARTICLES_ON
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float sceneZ = LinearEyeDepth (SAMPLE_DEPTH_TEXTURE_PROJ(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos)));
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float partZ = i.projPos.z;
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float fade = saturate (_InvFade * (sceneZ-partZ));
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i.color.a *= fade;
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#endif
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float c=UnityGet2DClipping(i.texcoord.zw,_ClipRect);
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i.color.a=lerp(i.color.a,i.color.a*c,_UseClipRect);
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return i.color * tex2D(_MainTex, i.texcoord) * i.color.a;
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}
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ENDCG
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}
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}
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}
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}
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