Library/PackageCache/com.unity.postprocessing@2.1.2/PostProcessing/Runtime/Effects/SubpixelMorphologicalAntialiasing.cs

   1 using System;
   2
   3 namespace UnityEngine.Rendering.PostProcessing
   4 {
   5     /// <summary>
   6     /// This class holds settings for the Subpixel Morphological Anti-aliasing (SMAA) effect.
   7     /// </summary>
   8     [Serializable]
   9     public sealed class SubpixelMorphologicalAntialiasing
  10     {
  11         enum Pass
  12         {
  13             EdgeDetection = 0,
  14             BlendWeights = 3,
  15             NeighborhoodBlending = 6
  16         }
  17
  18         /// <summary>
  19         /// Quality presets.
  20         /// </summary>
  21         public enum Quality
  22         {
  23             /// <summary>
  24             /// Low quality.
  25             /// </summary>
  26             Low = 0,
  27
  28             /// <summary>
  29             /// Medium quality.
  30             /// </summary>
  31             Medium = 1,
  32
  33             /// <summary>
  34             /// High quality.
  35             /// </summary>
  36             High = 2
  37         }
  38
  39         /// <summary>
  40         /// The quality preset to use for the anti-aliasing filter.
  41         /// </summary>
  42         [Tooltip("Lower quality is faster at the expense of visual quality (Low = ~60%, Medium = ~80%).")]
  43         public Quality quality = Quality.High;
  44
  45         /// <summary>
  46         /// Checks if the effect is supported on the target platform.
  47         /// </summary>
  48         /// <returns><c>true</c> if the anti-aliasing filter is supported, <c>false</c> otherwise</returns>
  49         public bool IsSupported()
  50         {
  51             return !RuntimeUtilities.isSinglePassStereoEnabled;
  52         }
  53
  54         internal void Render(PostProcessRenderContext context)
  55         {
  56             var sheet = context.propertySheets.Get(context.resources.shaders.subpixelMorphologicalAntialiasing);
  57             sheet.properties.SetTexture("_AreaTex", context.resources.smaaLuts.area);
  58             sheet.properties.SetTexture("_SearchTex", context.resources.smaaLuts.search);
  59
  60             var cmd = context.command;
  61             cmd.BeginSample("SubpixelMorphologicalAntialiasing");
  62
  63             cmd.GetTemporaryRT(ShaderIDs.SMAA_Flip, context.width, context.height, 0, FilterMode.Bilinear, context.sourceFormat, RenderTextureReadWrite.Linear);
  64             cmd.GetTemporaryRT(ShaderIDs.SMAA_Flop, context.width, context.height, 0, FilterMode.Bilinear, context.sourceFormat, RenderTextureReadWrite.Linear);
  65
  66             cmd.BlitFullscreenTriangle(context.source, ShaderIDs.SMAA_Flip, sheet, (int)Pass.EdgeDetection + (int)quality, true);
  67             cmd.BlitFullscreenTriangle(ShaderIDs.SMAA_Flip, ShaderIDs.SMAA_Flop, sheet, (int)Pass.BlendWeights + (int)quality);
  68             cmd.SetGlobalTexture("_BlendTex", ShaderIDs.SMAA_Flop);
  69             cmd.BlitFullscreenTriangle(context.source, context.destination, sheet, (int)Pass.NeighborhoodBlending);
  70
  71             cmd.ReleaseTemporaryRT(ShaderIDs.SMAA_Flip);
  72             cmd.ReleaseTemporaryRT(ShaderIDs.SMAA_Flop);
  73
  74             cmd.EndSample("SubpixelMorphologicalAntialiasing");
  75         }
  76     }
  77 }