Added chromatic aberration to DOF.

- Changed to apply chromatic aberration not only to the source image but
also to the DOF texture. This fixes the problem that the DOF suppresses
the effect of chromatic aberration.

Author: keijiro

PostProcessing/Resources/Shaders/Uber.shader

@@ -114,6 +114,9 @@ Shader "Hidden/Post FX/Uber Shader"
             #endif
 
             half3 color = (0.0).xxx;
+            #if DEPTH_OF_FIELD && CHROMATIC_ABERRATION
+            half4 dof = (0.0).xxxx;
+            #endif
 
             //
             // HDR effects
@@ -134,6 +137,17 @@ Shader "Hidden/Post FX/Uber Shader"
                 float2 pos = uv;
                 half3 sum = (0.0).xxx, filterSum = (0.0).xxx;
 
+                #if DEPTH_OF_FIELD
+                float2 dofDelta = delta;
+                float2 dofPos = pos;
+                if (_MainTex_TexelSize.y < 0.0)
+                {
+                    dofDelta.y = -dofDelta.y;
+                    dofPos.y = 1.0 - dofPos.y;
+                }
+                half4 dofSum = (0.0).xxxx;
+                #endif
+
                 for (int i = 0; i < samples; i++)
                 {
                     half t = (i + 0.5) / samples;
@@ -143,9 +157,18 @@ Shader "Hidden/Post FX/Uber Shader"
                     sum += s * filter;
                     filterSum += filter;
                     pos += delta;
+
+                    #if DEPTH_OF_FIELD
+                    half4 sdof = tex2Dlod(_DepthOfFieldTex, float4(UnityStereoScreenSpaceUVAdjust(dofPos, _MainTex_ST), 0, 0)).rgba;
+                    dofSum += sdof * half4(filter, 1);
+                    dofPos += dofDelta;
+                    #endif
                 }
 
                 color = sum / filterSum;
+                #if DEPTH_OF_FIELD
+                dof = dofSum / half4(filterSum, samples);
+                #endif
             }
             #else
             {
@@ -166,7 +189,9 @@ Shader "Hidden/Post FX/Uber Shader"
             // Depth of field
             #if DEPTH_OF_FIELD
             {
+                #if !CHROMATIC_ABERRATION
                 half4 dof = tex2D(_DepthOfFieldTex, i.uvFlippedSPR);
+                #endif
                 color = color * dof.a + dof.rgb * autoExposure;
             }
             #elif DEPTH_OF_FIELD_COC_VIEW