increase lowvidmem threshold

panda/src/wdxdisplay/wdxGraphicsWindow.cxx

@@ -1808,7 +1808,7 @@ bool wdxGraphicsWindow::search_for_device(int devnum,DXDeviceInfo *pDevinfo) {
     // so this is the true value
     _dxgsg->scrn.MaxAvailVidMem = dwVidMemTotal;
     
-    #define LOWVIDMEMTHRESHOLD 3500000
+    #define LOWVIDMEMTHRESHOLD 5500000
     #define CRAPPY_DRIVER_IS_LYING_VIDMEMTHRESHOLD 1000000     // every vidcard we deal with should have at least 1MB
     
     // assume buggy drivers (this means you, FireGL2) may return zero for dwVidMemTotal, so ignore value if its < CRAPPY_DRIVER_IS_LYING_VIDMEMTHRESHOLD

panda/src/wdxdisplay8/wdxGraphicsWindow8.cxx

@@ -1884,7 +1884,7 @@ find_all_card_memavails(void) {
         // #define LOWVIDMEMTHRESHOLD 3500000
         // #define CRAPPY_DRIVER_IS_LYING_VIDMEMTHRESHOLD 1000000
 
-        #define LOWVIDMEMTHRESHOLD 5000000  // 4MB cards should fall below this
+        #define LOWVIDMEMTHRESHOLD 5700000  // 4MB cards should fall below this
         #define CRAPPY_DRIVER_IS_LYING_VIDMEMTHRESHOLD 1000000  // if # is > 1MB, card is lying and I cant tell what it is
 
         // assume buggy drivers (this means you, FireGL2) may return zero (or small amts) for dwVidMemTotal, so ignore value if its < CRAPPY_DRIVER_IS_LYING_VIDMEMTHRESHOLD