Use an internal RNG instead of Unity's

Author: Chman

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 - Warning for mobiles about using post-processing with non-fullscreen cameras.
 - Directly to Camera Target on the PostProcessLayer component is now disabled by default.
+- The framework now uses its own random number generator instead of the default Unity one.
 
 ## [2.1.6] - 2019-04-11
 

PostProcessing/Runtime/Effects/Dithering.cs

@@ -10,6 +10,7 @@ namespace UnityEngine.Rendering.PostProcessing
     internal sealed class Dithering
     {
         int m_NoiseTextureIndex = 0;
+        System.Random m_Random = new System.Random(1234);
 
         internal void Render(PostProcessRenderContext context)
         {
@@ -24,8 +25,8 @@ internal void Render(PostProcessRenderContext context)
             if (++m_NoiseTextureIndex >= blueNoise.Length)
                 m_NoiseTextureIndex = 0;
 
-            float rndOffsetX = Random.value;
-            float rndOffsetY = Random.value;
+            float rndOffsetX = (float)m_Random.NextDouble();
+            float rndOffsetY = (float)m_Random.NextDouble();
         #endif
 
             var noiseTex = blueNoise[m_NoiseTextureIndex];