fix color picking

engine/main.cpp

@@ -286,7 +286,7 @@ int main()
     while (running)
     {
         // If there any message in the queue process it
-        if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
+        if (!App::I.redraw && PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
         {
             running = !(msg.message == WM_QUIT/* || gl.keys[VK_ESCAPE]*/);
             DispatchMessage(&msg);
@@ -298,10 +298,13 @@ int main()
             float dt = (float)(t1 - t0) / 1000.0f;
             if (dt > 1.0f / 60.0f)
             {
-                App::I.clear();
-                App::I.update((float)(t1 - t0) / 1000.0f);
                 t0 = t1;
-                SwapBuffers(hDC);
+                if (App::I.redraw)
+                {
+                    App::I.clear();
+                    App::I.update((float)(t1 - t0) / 1000.0f);
+                    SwapBuffers(hDC);
+                }
             }
             else
             {
@@ -329,6 +332,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
     case WM_SIZE:
         App::I.resize((float)LOWORD(lp), (float)HIWORD(lp));
         App::I.clear();
+        App::I.redraw = true;
         App::I.update(0.f);
         SwapBuffers(hDC);
         break;