Add option to hard-break on validation errors in tests

* On D3D we also start checking for leaking objects on shutdown (Vulkan this is
  done by default, GL we have no control over validation).

util/test/demos/test_common.cpp

@@ -445,6 +445,7 @@ std::string GraphicsTest::dataRoot;
 int GraphicsTest::screenWidth = 400;
 int GraphicsTest::screenHeight = 300;
 bool GraphicsTest::debugDevice = false;
+bool GraphicsTest::breakOnDebug = false;
 
 void GraphicsTest::Prepare(int argc, char **argv)
 {
@@ -476,6 +477,11 @@ void GraphicsTest::Prepare(int argc, char **argv)
       debugDevice = true;
     }
 
+    if(!strcmp(argv[i], "--break-on-debug"))
+    {
+      breakOnDebug = true;
+    }
+
     if(i + 1 < argc && (!strcmp(argv[i], "--frames") || !strcmp(argv[i], "--framecount") ||
                         !strcmp(argv[i], "--max-frames")))
     {