/// <summary>
/// Try to preload the library.
/// This is useful when we want to have AnyCPU .NET and CPU-specific native code.
/// Only available on Windows for now.
/// </summary>
/// <param name="libraryName">Name of the library.</param>
/// <param name="owner">Type whose assembly location is related to the native library (we can't use GetCallingAssembly as it might be wrong due to optimizations).</param>
/// <exception cref="System.InvalidOperationException">Library could not be loaded.</exception>
public static void PreloadLibrary(string libraryName, Type owner)
{
#if STRIDE_PLATFORM_DESKTOP
lock (LoadedLibraries)
{
// If already loaded, just exit as we want to load it just once
if (LoadedLibraries.ContainsKey(libraryName))
{
return;
}
string cpu;
string platform;
switch (RuntimeInformation.ProcessArchitecture)
{
case Architecture.X86:
cpu = "x86";
break;
case Architecture.X64:
cpu = "x64";
break;
case Architecture.Arm:
cpu = "ARM";
break;
default:
throw new PlatformNotSupportedException();
}
switch (Platform.Type)
{
case PlatformType.Windows:
platform = "win";
break;
case PlatformType.Linux:
platform = "linux";
break;
case PlatformType.macOS:
platform = "osx";
break;
default:
throw new PlatformNotSupportedException();
}
// We are trying to load the dll from a shadow path if it is already registered, otherwise we use it directly from the folder
{
foreach (var libraryPath in new[]
{
Path.Combine(Path.GetDirectoryName(owner.GetTypeInfo().Assembly.Location), $"{platform}-{cpu}"),
Path.Combine(Environment.CurrentDirectory, $"{platform}-{cpu}"),
// Also try without platform for Windows-only packages (backward compat for editor packages)
Path.Combine(Path.GetDirectoryName(owner.GetTypeInfo().Assembly.Location), $"{cpu}"),
Path.Combine(Environment.CurrentDirectory, $"{cpu}"),
})
{
var libraryFilename = Path.Combine(libraryPath, libraryName);
if (NativeLibrary.TryLoad(libraryFilename, out var result))
{
LoadedLibraries.Add(libraryName.ToLowerInvariant(), result);
return;
}
}
}
// Attempt to load it from PATH
foreach (var p in Environment.GetEnvironmentVariable("PATH").Split(Path.PathSeparator))
{
var libraryFilename = Path.Combine(p, libraryName);
if (NativeLibrary.TryLoad(libraryFilename, out var result))
{
LoadedLibraries.Add(libraryName.ToLowerInvariant(), result);
return;
}
}
throw new InvalidOperationException($"Could not load native library {libraryName} using CPU architecture {cpu}.");
}
#endif
}
/// <summary>
/// Try to preload the library.
/// This is useful when we want to have AnyCPU .NET and CPU-specific native code.
/// Only available on Windows for now.
/// </summary>
/// <param name="libraryName">Name of the library, without the extension.</param>
/// <param name="owner">Type whose assembly location is related to the native library (we can't use GetCallingAssembly as it might be wrong due to optimizations).</param>
/// <exception cref="System.InvalidOperationException">Library could not be loaded.</exception>
public static void PreloadLibrary(string libraryName, Type owner)
{
#if STRIDE_PLATFORM_DESKTOP
lock (LoadedLibraries)
{
// If already loaded, just exit as we want to load it just once
if (LoadedLibraries.ContainsKey(libraryName))
{
return;
}
string cpu;
string platform;
string extension;
switch (RuntimeInformation.ProcessArchitecture)
{
case Architecture.X86:
cpu = "x86";
break;
case Architecture.X64:
cpu = "x64";
break;
case Architecture.Arm:
cpu = "ARM";
break;
default:
throw new PlatformNotSupportedException();
}
switch (Platform.Type)
{
case PlatformType.Windows:
platform = "win";
break;
case PlatformType.Linux:
platform = "linux";
break;
case PlatformType.macOS:
platform = "osx";
break;
default:
throw new PlatformNotSupportedException();
}
switch (Platform.Type)
{
case PlatformType.Windows:
extension = ".dll";
break;
case PlatformType.Linux:
extension = ".so";
break;
case PlatformType.macOS:
extension = ".dylib";
break;
default:
throw new PlatformNotSupportedException();
}
var libraryNameWithExtension = libraryName + extension;
if (Platform.Type != PlatformType.Windows)
{
// on linux/macos opening a library without a path will look it up in the global library locations
// e.g. /lib/x86_64-linux-gnu, /lib, /usr/lib, etc.
if (NativeLibrary.TryLoad(libraryNameWithExtension, out var result))
{
LoadedLibraries.Add(libraryName.ToLowerInvariant(), result);
return;
}
else if (!libraryName.StartsWith(UNIX_LIB_PREFIX) &&
NativeLibrary.TryLoad(UNIX_LIB_PREFIX + libraryNameWithExtension, out result))
{
LoadedLibraries.Add(libraryName.ToLowerInvariant(), result);
return;
}
}
// We are trying to load the dll from a shadow path if it is already registered, otherwise we use it directly from the folder
{
var platformNativeLibsFolder = $"{platform}-{cpu}";
foreach (var libraryPath in new[]
{
Path.Combine(Path.GetDirectoryName(owner.GetTypeInfo().Assembly.Location) ?? string.Empty, platformNativeLibsFolder),
Path.Combine(Environment.CurrentDirectory ?? string.Empty, platformNativeLibsFolder),
Path.Combine(Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName) ?? string.Empty, platformNativeLibsFolder),
// Also try without platform for Windows-only packages (backward compat for editor packages)
Path.Combine(Path.GetDirectoryName(owner.GetTypeInfo().Assembly.Location) ?? string.Empty, cpu),
Path.Combine(Environment.CurrentDirectory ?? string.Empty, cpu),
})
{
var libraryFilename = Path.Combine(libraryPath, libraryNameWithExtension);
if (NativeLibrary.TryLoad(libraryFilename, out var result))
{
LoadedLibraries.Add(libraryName.ToLowerInvariant(), result);
return;
}
}
}
// Attempt to load it from PATH
foreach (var p in Environment.GetEnvironmentVariable("PATH").Split(Path.PathSeparator))
{
var libraryFilename = Path.Combine(p, libraryNameWithExtension);
if (NativeLibrary.TryLoad(libraryFilename, out var result))
{
LoadedLibraries.Add(libraryName.ToLowerInvariant(), result);
return;
}
}
throw new InvalidOperationException($"Could not load native library {libraryName} using CPU architecture {cpu}.");
}
#endif
}
