From 18f90b1f071633773a379b18f7a26c6859e38e31 Mon Sep 17 00:00:00 2001
From: duv <duv@opencascade.com>
Date: Fri, 17 Jul 2015 18:15:44 +0300
Subject: [PATCH] Fix for CR26432

---
 src/OpenGl/OpenGl_View_Raytrace.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/OpenGl/OpenGl_View_Raytrace.cxx b/src/OpenGl/OpenGl_View_Raytrace.cxx
index 0af7a21258..ce250cf198 100644
--- a/src/OpenGl/OpenGl_View_Raytrace.cxx
+++ b/src/OpenGl/OpenGl_View_Raytrace.cxx
@@ -2428,6 +2428,10 @@ Standard_Boolean OpenGl_View::runRaytraceShaders (const Graphic3d_CView&
         myRaytraceProgram->SetUniform (theGlContext,
           myUniformLocations[0][OpenGl_RT_uSampleWeight], 1.f / (myAccumFrames + 1));
 
+        // Set random number generator seed
+        myRaytraceProgram->SetUniform (theGlContext,
+          myUniformLocations[0][OpenGl_RT_uFrameRndSeed], static_cast<Standard_Integer> (myRNG.NextInt() >> 2));
+
         theGlContext->core20fwd->glDrawArrays (GL_TRIANGLES, 0, 6);
         ++myAccumFrames;
         glFinish();
-- 
2.39.5