From: duv <duv@opencascade.com>
Date: Fri, 17 Jul 2015 15:15:44 +0000 (+0300)
Subject: Fix for CR26432
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=41f4dabdc6ddf678644256d32bd39d3501ddd9e2;p=occt-copy.git

Fix for CR26432
---

diff --git a/src/OpenGl/OpenGl_View_Raytrace.cxx b/src/OpenGl/OpenGl_View_Raytrace.cxx
index 15b17afea2..8941e7aa97 100644
--- a/src/OpenGl/OpenGl_View_Raytrace.cxx
+++ b/src/OpenGl/OpenGl_View_Raytrace.cxx
@@ -2429,6 +2429,10 @@ 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();