82 lines
3.0 KiB
C#
82 lines
3.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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namespace Giants.Launcher
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{
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public class RendererInterop
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{
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#pragma warning disable 649
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public struct GFXCapabilityInfo
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{
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public int maxAnisotropy;
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public uint flags;
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public int priority;
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
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public string rendererName;
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public int interfaceVersion;
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};
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#pragma warning restore 649
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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private delegate bool GFXGetCapabilities(ref GFXCapabilityInfo outCapabilities);
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/// <summary>
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/// Makes interop call to native renderer DLL to obtain capability information.
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/// </summary>
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/// <returns>True if the given renderer is supported by the system.</returns>
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public static bool GetRendererCapabilities(string dllPath, ref GFXCapabilityInfo capabilities)
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{
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bool rendererSupported = false;
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IntPtr pDll = NativeMethods.LoadLibrary(dllPath);
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if (pDll == IntPtr.Zero)
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throw new System.Exception(string.Format("LoadLibrary() for {0} failed", dllPath));
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IntPtr pAddressOfFunctionToCall = NativeMethods.GetProcAddress(pDll, "GFXGetCapabilities");
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if (pAddressOfFunctionToCall == IntPtr.Zero)
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return false;
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var prcGetCapabilities = (GFXGetCapabilities)Marshal.GetDelegateForFunctionPointer(pAddressOfFunctionToCall, typeof(GFXGetCapabilities));
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rendererSupported = prcGetCapabilities(ref capabilities);
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NativeMethods.FreeLibrary(pDll);
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return rendererSupported;
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}
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public static List<RendererInfo> GetCompatibleRenderers(string gamePath)
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{
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var dir = new DirectoryInfo(
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Path.GetDirectoryName(gamePath));
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var capabilities = new List<RendererInfo>();
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// Search current directory for compatible renderers:
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foreach (FileInfo file in dir.GetFiles("gg_*.dll"))
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{
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try
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{
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NativeMethods.SetDllDirectory(Environment.CurrentDirectory);
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// Make interop call to native renderer DLLs to get capability info
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var interopCaps = new RendererInterop.GFXCapabilityInfo();
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string path = Path.Combine(file.DirectoryName, file.Name);
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if (GetRendererCapabilities(path, ref interopCaps) && interopCaps.priority >= 0)
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{
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RendererInfo caps = new RendererInfo(path, ref interopCaps);
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capabilities.Add(caps);
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}
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.Message, Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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return capabilities;
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}
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}
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}
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