diff --git a/Shadertoy/ShadertoyRender.h b/Shadertoy/ShadertoyRender.h
index bb61b5896..5e823cacd 100644
--- a/Shadertoy/ShadertoyRender.h
+++ b/Shadertoy/ShadertoyRender.h
@@ -706,7 +706,7 @@ ShadertoyPlugin::RENDERFUNC(const OFX::RenderArguments &args)
 # ifdef OFX_SUPPORTS_OPENGLRENDER
     const int& gl_enabled = args.openGLEnabled;
     const OFX::ImageEffectHostDescription &gHostDescription = *OFX::getImageEffectHostDescription();
-    DPRINT( ("render: openGLSuite %s\n", gHostDescription.supportsOpenGLRender ? "found" : "not found") );
+    //DPRINT( ("render: openGLSuite %s\n", gHostDescription.supportsOpenGLRender ? "found" : "not found") );
     if (gHostDescription.supportsOpenGLRender) {
         DPRINT( ("render: openGL rendering %s\n", gl_enabled ? "enabled" : "DISABLED") );
     }
@@ -720,10 +720,8 @@ ShadertoyPlugin::RENDERFUNC(const OFX::RenderArguments &args)
 #  endif
 # endif
 
-    const OfxRectI renderWindow = args.renderWindow;
-    DPRINT( ("Render: window = [%d, %d - %d, %d]\n",
-             renderWindow.x1, renderWindow.y1,
-             renderWindow.x2, renderWindow.y2) );
+    const OfxRectI& renderWindow = args.renderWindow;
+    //DPRINT( ("Render: window = [%d, %d - %d, %d]\n", renderWindow.x1, renderWindow.y1, renderWindow.x2, renderWindow.y2) );
 
 
     // get the output image texture
diff --git a/Test/TestOpenGLRender.h b/Test/TestOpenGLRender.h
index 2930a0412..d22e90f26 100644
--- a/Test/TestOpenGLRender.h
+++ b/Test/TestOpenGLRender.h
@@ -555,7 +555,7 @@ TestOpenGLPlugin::RENDERFUNC(const OFX::RenderArguments &args)
 # ifdef OFX_SUPPORTS_OPENGLRENDER
     const int& gl_enabled = args.openGLEnabled;
     const OFX::ImageEffectHostDescription &gHostDescription = *OFX::getImageEffectHostDescription();
-    DPRINT( ("render: openGLSuite %s\n", gHostDescription.supportsOpenGLRender ? "found" : "not found") );
+    //DPRINT( ("render: openGLSuite %s\n", gHostDescription.supportsOpenGLRender ? "found" : "not found") );
     if (gHostDescription.supportsOpenGLRender) {
         DPRINT( ("render: openGL rendering %s\n", gl_enabled ? "enabled" : "DISABLED") );
     }
@@ -569,10 +569,8 @@ TestOpenGLPlugin::RENDERFUNC(const OFX::RenderArguments &args)
 #  endif
 # endif
 
-    const OfxRectI renderWindow = args.renderWindow;
-    DPRINT( ("renderWindow = [%d, %d - %d, %d]\n",
-             renderWindow.x1, renderWindow.y1,
-             renderWindow.x2, renderWindow.y2) );
+    const OfxRectI& renderWindow = args.renderWindow;
+    //DPRINT( ("renderWindow = [%d, %d - %d, %d]\n", renderWindow.x1, renderWindow.y1,renderWindow.x2, renderWindow.y2) );
 
 
     // get the output image texture