- Fixed: The changecamera special should remove "past viewer" information

from the renderer in case the camera changed position or direction since
  the last time it was looked through. Otherwise, the renderer will
  interpolate from its previous view for one frame when it is switched to.
- Fixed non-POD parameter passing for GCC introduced in the previous commit.

SVN r476 (trunk)

src/r_main.cpp

@@ -978,6 +978,33 @@ void R_FreePastViewers ()
 	PastViewers.Clear ();
 }
 
+//==========================================================================
+//
+// R_ClearPastViewer
+//
+// If the actor changed in a non-interpolatable way, remove it.
+//
+//==========================================================================
+
+void R_ClearPastViewer (AActor *actor)
+{
+	for (unsigned int i = 0; i < PastViewers.Size(); ++i)
+	{
+		if (PastViewers[i].ViewActor == actor)
+		{
+			// Found it, so remove it.
+			if (i == PastViewers.Size())
+			{
+				PastViewers.Delete (i);
+			}
+			else
+			{
+				PastViewers.Pop (PastViewers[i]);
+			}
+		}
+	}
+}
+
 //==========================================================================
 //
 // R_CopyStackedViewParameters