Automatic merge of T1.5.1-799-gb02a6e5d3 and 14 pull requests

- Pull request #570 at 3539862: Experimental glTF 2.0 support with PBR lighting
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #882 at a055bca: Blueprint/train car operations UI window
- Pull request #885 at 8f94333: feat: Add notifications to Menu
- Pull request #886 at 6c0785b: Scene viewer extension to TrackViewer
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #896 at 5866028: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains
- Pull request #897 at 42f1dd9: feat: Improved system information collection
- Pull request #899 at 1a49cc4: Duplex steam engines - Booster Engine addition
- Pull request #903 at 6c9da3f: Downloading route content (Github, zip)
- Pull request #907 at 9b0b04f: Bug fix for https://bugs.launchpad.net/or/+bug/2047300 Dynamic tracks disappear after long tunnel
- Pull request #908 at 4b4afe3: feat: supports switching adhesion precisions
- Pull request #911 at 6834af0: docs: Add refactoring as a special type of PR

Author: openrails-bot

Source/ORTS.Common/SystemInfo.cs

@@ -24,6 +24,7 @@
 using System.Collections.Generic;
 using System.Globalization;
 using System.Diagnostics;
+using SharpDX.DXGI;
 
 namespace ORTS.Common
 {
@@ -87,13 +88,16 @@ static SystemInfo()
                 Trace.WriteLine(error);
             }
 
+            // The WMI data for AdapterRAM is unreliable, so we have to use DXGI to get the real numbers.
+            // Alas, DXGI doesn't give us the manufacturer name for the adapter, so we combine it with WMI.
+            var descriptions = new Factory1().Adapters.Select(adapter => adapter.Description).ToArray();
             try
             {
                 GPUs = new ManagementClass("Win32_VideoController").GetInstances().Cast<ManagementObject>().Select(adapter => new GPU
                 {
                     Name = (string)adapter["Name"],
                     Manufacturer = (string)adapter["AdapterCompatibility"],
-                    MemoryMB = (uint?)adapter["AdapterRAM"] / 1024 / 1024 ?? 0,
+                    MemoryMB = (uint)((long)descriptions.FirstOrDefault(desc => desc.Description == (string)adapter["Name"]).DedicatedVideoMemory / 1024 / 1024),
                 }).ToList();
             }
             catch (ManagementException error)