Improved focus plane debug view

Author: Chman

PostProcessing/Resources/Shaders/Uber.shader

@@ -40,9 +40,10 @@ Shader "Hidden/Post FX/Uber Shader"
         sampler2D _ChromaticAberration_Spectrum;
 
         // Depth of field
+        sampler2D_float _CameraDepthTexture;
         sampler2D _DepthOfFieldTex;
         float4 _DepthOfFieldTex_TexelSize;
-        float _MaxCoC;
+        float2 _DepthOfFieldParams; // x: distance, y: f^2 / (N * (S1 - f) * film_width * 2)
 
         // Bloom
         sampler2D _BloomTex;
@@ -188,6 +189,29 @@ Shader "Hidden/Post FX/Uber Shader"
             }
             #elif DEPTH_OF_FIELD_COC_VIEW
             {
+                // Calculate the radiuses of CoC.
+                half4 src = tex2D(_DepthOfFieldTex, uv);
+                float depth = LinearEyeDepth(SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, i.uvFlippedSPR));
+                float coc = (depth - _DepthOfFieldParams.x) * _DepthOfFieldParams.y / depth;
+                coc *= 80;
+
+                // Visualize CoC (gray -> red -> white)
+                half3 rgb = lerp(half3(1, 0, 0), half3(0.5, 0.5, 0.5), saturate(-coc));
+                rgb = lerp(rgb, half3(1, 1, 1), saturate(coc));
+
+                // Black and white image overlay
+                rgb *= AcesLuminance(color) + 0.5;
+
+                // Gamma correction
+                #if !UNITY_COLORSPACE_GAMMA
+                {
+                    rgb = GammaToLinearSpace(rgb);
+                }
+                #endif
+
+                color = rgb;
+
+                /*
                 // CoC radius
                 half4 src = tex2D(_DepthOfFieldTex, uv);
                 half coc = src.a / _MaxCoC;
@@ -207,6 +231,7 @@ Shader "Hidden/Post FX/Uber Shader"
                 #endif
 
                 color = rgb;
+                */
             }
             #endif
 

PostProcessing/Runtime/Components/DepthOfFieldComponent.cs

@@ -8,14 +8,15 @@ public sealed class DepthOfFieldComponent : PostProcessingComponentRenderTexture
     {
         static class Uniforms
         {
-            internal static readonly int _DepthOfFieldTex = Shader.PropertyToID("_DepthOfFieldTex");
-            internal static readonly int _Distance = Shader.PropertyToID("_Distance");
-            internal static readonly int _LensCoeff = Shader.PropertyToID("_LensCoeff");
-            internal static readonly int _MaxCoC = Shader.PropertyToID("_MaxCoC");
-            internal static readonly int _RcpMaxCoC = Shader.PropertyToID("_RcpMaxCoC");
-            internal static readonly int _RcpAspect = Shader.PropertyToID("_RcpAspect");
-            internal static readonly int _MainTex = Shader.PropertyToID("_MainTex");
-            internal static readonly int _HistoryCoC = Shader.PropertyToID("_HistoryCoC");
+            internal static readonly int _DepthOfFieldTex    = Shader.PropertyToID("_DepthOfFieldTex");
+            internal static readonly int _Distance           = Shader.PropertyToID("_Distance");
+            internal static readonly int _LensCoeff          = Shader.PropertyToID("_LensCoeff");
+            internal static readonly int _MaxCoC             = Shader.PropertyToID("_MaxCoC");
+            internal static readonly int _RcpMaxCoC          = Shader.PropertyToID("_RcpMaxCoC");
+            internal static readonly int _RcpAspect          = Shader.PropertyToID("_RcpAspect");
+            internal static readonly int _MainTex            = Shader.PropertyToID("_MainTex");
+            internal static readonly int _HistoryCoC         = Shader.PropertyToID("_HistoryCoC");
+	        internal static readonly int _DepthOfFieldParams = Shader.PropertyToID("_DepthOfFieldParams");
         }
 
         const string k_ShaderString = "Hidden/Post FX/Depth Of Field";
@@ -129,7 +130,7 @@ public void Prepare(RenderTexture source, Material uberMaterial, bool antialiasC
             if (context.profile.debugViews.IsModeActive(DebugMode.FocusPlane))
             {
                 uberMaterial.SetTexture(Uniforms._DepthOfFieldTex, rt1);
-                uberMaterial.SetFloat(Uniforms._MaxCoC, maxCoC);
+                uberMaterial.SetVector(Uniforms._DepthOfFieldParams, new Vector2(s1, coeff));
                 uberMaterial.EnableKeyword("DEPTH_OF_FIELD_COC_VIEW");
                 context.Interrupt();
             }