Library/PackageCache/com.unity.postprocessing@2.1.6/PostProcessing/Shaders/Builtins/DeferredFog.shader

   1 Shader "Hidden/PostProcessing/DeferredFog"
   2 {
   3     HLSLINCLUDE
   4
   5         #pragma multi_compile __ FOG_LINEAR FOG_EXP FOG_EXP2
   6         #include "../StdLib.hlsl"
   7         #include "Fog.hlsl"
   8
   9         TEXTURE2D_SAMPLER2D(_MainTex, sampler_MainTex);
  10         TEXTURE2D_SAMPLER2D(_CameraDepthTexture, sampler_CameraDepthTexture);
  11
  12         #define SKYBOX_THREASHOLD_VALUE 0.9999
  13
  14         float4 Frag(VaryingsDefault i) : SV_Target
  15         {
  16             half4 color = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoordStereo);
  17
  18             float depth = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, sampler_CameraDepthTexture, i.texcoordStereo);
  19             depth = Linear01Depth(depth);
  20             float dist = ComputeFogDistance(depth);
  21             half fog = 1.0 - ComputeFog(dist);
  22
  23             return lerp(color, _FogColor, fog);
  24         }
  25
  26         float4 FragExcludeSkybox(VaryingsDefault i) : SV_Target
  27         {
  28             half4 color = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoordStereo);
  29
  30             float depth = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, sampler_CameraDepthTexture, i.texcoordStereo);
  31             depth = Linear01Depth(depth);
  32             float skybox = depth < SKYBOX_THREASHOLD_VALUE;
  33             float dist = ComputeFogDistance(depth);
  34             half fog = 1.0 - ComputeFog(dist);
  35
  36             return lerp(color, _FogColor, fog * skybox);
  37         }
  38
  39     ENDHLSL
  40
  41     SubShader
  42     {
  43         Cull Off ZWrite Off ZTest Always
  44
  45         Pass
  46         {
  47             HLSLPROGRAM
  48
  49                 #pragma vertex VertDefault
  50                 #pragma fragment Frag
  51
  52             ENDHLSL
  53         }
  54
  55         Pass
  56         {
  57             HLSLPROGRAM
  58
  59                 #pragma vertex VertDefault
  60                 #pragma fragment FragExcludeSkybox
  61
  62             ENDHLSL
  63         }
  64     }
  65 }