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- Shader "Particles/Priority Additive (Soft)" {
- Properties {
- _MainTex ("Particle Texture", 2D) = "white" {}
- _InvFade ("Soft Particles Factor", Range(0.01,3.0)) = 1.0
- }
-
- Category {
- Tags { "Queue"="Transparent+1" "IgnoreProjector"="True" "RenderType"="Transparent" }
- Blend One OneMinusSrcColor
- ColorMask RGB
- Cull Off Lighting Off ZWrite Off Fog { Color (0,0,0,0) }
- BindChannels {
- Bind "Color", color
- Bind "Vertex", vertex
- Bind "TexCoord", texcoord
- }
-
- // ---- Fragment program cards
- SubShader {
- Pass {
-
- CGPROGRAM
- #pragma vertex vert
- #pragma fragment frag
- #pragma fragmentoption ARB_precision_hint_fastest
- #pragma multi_compile_particles
-
- #include "UnityCG.cginc"
-
- sampler2D _MainTex;
- fixed4 _TintColor;
-
- struct appdata_t {
- float4 vertex : POSITION;
- fixed4 color : COLOR;
- float2 texcoord : TEXCOORD0;
- };
-
- struct v2f {
- float4 vertex : POSITION;
- fixed4 color : COLOR;
- float2 texcoord : TEXCOORD0;
- #ifdef SOFTPARTICLES_ON
- float4 projPos : TEXCOORD1;
- #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);
- return o;
- }
-
- sampler2D _CameraDepthTexture;
- float _InvFade;
-
- fixed4 frag (v2f i) : COLOR
- {
- #ifdef SOFTPARTICLES_ON
- float sceneZ = LinearEyeDepth (UNITY_SAMPLE_DEPTH(tex2Dproj(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos))));
- float partZ = i.projPos.z;
- float fade = saturate (_InvFade * (sceneZ-partZ));
- i.color.a *= fade;
- #endif
-
- half4 prev = i.color * tex2D(_MainTex, i.texcoord);
- prev.rgb *= prev.a;
- return prev;
- }
- ENDCG
- }
- }
-
- // ---- Dual texture cards
- SubShader {
- Pass {
- SetTexture [_MainTex] {
- combine texture * primary
- }
- SetTexture [_MainTex] {
- combine previous * previous alpha, previous
- }
- }
- }
-
- // ---- Single texture cards (does not do particle colors)
- SubShader {
- Pass {
- SetTexture [_MainTex] {
- combine texture * texture alpha, texture
- }
- }
- }
- }
- }
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