Library/PackageCache/com.unity.postprocessing@2.1.6/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 #if UNITY_2017_1_OR_NEWER
   9     [UnityEngine.Scripting.Preserve]
  10 #endif
  11     [Serializable]
  12     public sealed class SubpixelMorphologicalAntialiasing
  13     {
  14         enum Pass
  15         {
  16             EdgeDetection = 0,
  17             BlendWeights = 3,
  18             NeighborhoodBlending = 6
  19         }
  20
  21         /// <summary>
  22         /// Quality presets.
  23         /// </summary>
  24         public enum Quality
  25         {
  26             /// <summary>
  27             /// Low quality.
  28             /// </summary>
  29             Low = 0,
  30
  31             /// <summary>
  32             /// Medium quality.
  33             /// </summary>
  34             Medium = 1,
  35
  36             /// <summary>
  37             /// High quality.
  38             /// </summary>
  39             High = 2
  40         }
  41
  42         /// <summary>
  43         /// The quality preset to use for the anti-aliasing filter.
  44         /// </summary>
  45         [Tooltip("Lower quality is faster at the expense of visual quality (Low = ~60%, Medium = ~80%).")]
  46         public Quality quality = Quality.High;
  47
  48         /// <summary>
  49         /// Checks if the effect is supported on the target platform.
  50         /// </summary>
  51         /// <returns><c>true</c> if the anti-aliasing filter is supported, <c>false</c> otherwise</returns>
  52         public bool IsSupported()
  53         {
  54             return !RuntimeUtilities.isSinglePassStereoEnabled;
  55         }
  56
  57         internal void Render(PostProcessRenderContext context)
  58         {
  59             var sheet = context.propertySheets.Get(context.resources.shaders.subpixelMorphologicalAntialiasing);
  60             sheet.properties.SetTexture("_AreaTex", context.resources.smaaLuts.area);
  61             sheet.properties.SetTexture("_SearchTex", context.resources.smaaLuts.search);
  62
  63             var cmd = context.command;
  64             cmd.BeginSample("SubpixelMorphologicalAntialiasing");
  65
  66             cmd.GetTemporaryRT(ShaderIDs.SMAA_Flip, context.width, context.height, 0, FilterMode.Bilinear, context.sourceFormat, RenderTextureReadWrite.Linear);
  67             cmd.GetTemporaryRT(ShaderIDs.SMAA_Flop, context.width, context.height, 0, FilterMode.Bilinear, context.sourceFormat, RenderTextureReadWrite.Linear);
  68
  69             cmd.BlitFullscreenTriangle(context.source, ShaderIDs.SMAA_Flip, sheet, (int)Pass.EdgeDetection + (int)quality, true);
  70             cmd.BlitFullscreenTriangle(ShaderIDs.SMAA_Flip, ShaderIDs.SMAA_Flop, sheet, (int)Pass.BlendWeights + (int)quality);
  71             cmd.SetGlobalTexture("_BlendTex", ShaderIDs.SMAA_Flop);
  72             cmd.BlitFullscreenTriangle(context.source, context.destination, sheet, (int)Pass.NeighborhoodBlending);
  73
  74             cmd.ReleaseTemporaryRT(ShaderIDs.SMAA_Flip);
  75             cmd.ReleaseTemporaryRT(ShaderIDs.SMAA_Flop);
  76
  77             cmd.EndSample("SubpixelMorphologicalAntialiasing");
  78         }
  79     }
  80 }