105 lines
3.6 KiB
Plaintext
105 lines
3.6 KiB
Plaintext
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Shader "Lux Water/Particles/UnderwaterParticles Additive" {
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Properties {
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[HDR] _TintColor ("Tint Color", Color) = (0.5,0.5,0.5,0.5)
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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 SrcAlpha One
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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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//#pragma multi_compile_fog
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#include "UnityCG.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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float2 texcoord : TEXCOORD0;
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// LuxWater: Additional inputs for the fragment shader
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float4 projPos : TEXCOORD2;
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float4 fogLighting : TEXCOORD3;
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float3 worldPos : TEXCOORD4;
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fixed3 scatter : TEXCOORD5;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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float4 _MainTex_ST;
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// LuxWater: Include the UnderwaterFog file - this must be done after all structs are defined
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#include "../Includes/LuxWater_UnderwaterParticleFog.cginc"
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v2f vert (appdata_t v) {
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// LuxWater: Here we have to setup v2f using: (v2f)0
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v2f o = (v2f)0;
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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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// LuxWater: We always need this
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o.projPos = ComputeScreenPos (o.vertex);
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COMPUTE_EYEDEPTH(o.projPos.z);
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o.color = v.color;
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o.texcoord = TRANSFORM_TEX(v.texcoord,_MainTex);
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// LuxWater: Call SetupVertexFoglighting which sets up all missing members of v2f
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SetupVertexFoglightingAdditive (v, o);
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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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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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fixed4 col = 2.0f * i.color * _TintColor * tex2D(_MainTex, i.texcoord);
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col.a = saturate(col.a); // alpha should not have double-brightness applied to it, but we can't fix that legacy behavior without breaking everyone's effects, so instead clamp the output to get sensible HDR behavior (case 967476)
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//UNITY_APPLY_FOG_COLOR(i.fogCoord, col, fixed4(0,0,0,0)); // fog towards black due to our blend mode
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// LuxWater: Add underwater fog and absorption
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col.rgb = LuxWater_ParticleFog( col.rgb, i.fogLighting, i.worldPos, i.projPos, i.scatter);
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return col;
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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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