/// <summary>
/// Ensure <see cref="MemoryCopy"/> functionality.
/// </summary>
private static void EnsureMemoryCopy()
{
if (MemoryCopyPointer == null)
{
IntPtr memoryCopyPtr;
switch (Environment.OSVersion.Platform)
{
case PlatformID.Win32Windows:
case PlatformID.Win32NT:
case PlatformID.Win32S:
memoryCopyPtr = GetProcAddress.GetAddress("msvcrt.dll", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
case PlatformID.Unix:
memoryCopyPtr = GetProcAddress.GetAddress("libc.so.6", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
default:
throw new NotSupportedException("no suitable memcpy support");
}
}
}
/// <summary>
/// Link delegates fields using import declarations.
/// </summary>
/// <param name="path">
/// A <see cref="System.String"/> that specifies the assembly file path containing the import functions.
/// </param>
/// <param name="type">
/// A <see cref="System.Type"/> that specifies the type used for detecting import declarations and delegates fields.
/// </param>
protected static void LinkLibraryProcImports(string path, Type type)
{
SortedList <string, MethodInfo> sImportMap;
List <FieldInfo> sDelegates;
LinkProcAddressImports(path, type, delegate(string libpath, string function) {
return(GetProcAddress.GetAddress(libpath, function));
}, out sImportMap, out sDelegates);
}
protected Plugin(string assemblyPath, string factoryFunction)
{
if (assemblyPath == null)
{
throw new ArgumentNullException("assemblyPath");
}
if ((_CreatePluginFactoryPtr = GetProcAddress.GetAddress(assemblyPath, factoryFunction)) == IntPtr.Zero)
{
throw new ArgumentException("not a valid factory function", "factoryFunction");
}
// Marshal.GetDelegateForFunctionPointer(createFactoryPtr, factoryFunction);
}
/// <summary>
/// Link delegates fields using import declarations, using platform standard method for determining procesures addresses.
/// </summary>
/// <param name="path">
/// A <see cref="String"/> that specifies the assembly file path containing the import functions.
/// </param>
/// <param name="imports">
/// A <see cref="ImportMap"/> mapping a <see cref="MethodInfo"/> with the relative function name.
/// </param>
/// <param name="delegates">
/// A <see cref="DelegateList"/> listing <see cref="FieldInfo"/> related to function delegates.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="path"/>, <paramref name="imports"/> or <paramref name="delegates"/> is null.
/// </exception>
protected static void LoadProcDelegates(string path, ImportMap imports, DelegateList delegates)
{
LoadProcDelegates(path, imports, delegates, delegate(string libpath, string function) {
return(GetProcAddress.GetAddress(libpath, function));
});
}
/// <summary>
/// Load available SIMD extensions.
/// </summary>
public static void LoadSimdExtensions()
{
const string AssemblyPath = "OpenGL.Simd.dll";
IntPtr getCpuInformationPtr = IntPtr.Zero;
if (File.Exists(AssemblyPath) == false)
{
return;
}
try {
getCpuInformationPtr = GetProcAddress.GetAddress(AssemblyPath, "GetCpuInformation");
} catch { /* Ignore exception, leave 'getCpuInformationPtr' equals to 'IntPtr.Zero' */ }
// No CPU information? Ahi ahi ahi
if (getCpuInformationPtr == IntPtr.Zero)
{
return;
}
GetCpuInformation getCpuInformation = (GetCpuInformation)Marshal.GetDelegateForFunctionPointer(getCpuInformationPtr, typeof(GetCpuInformation));
CpuInformation cpuInfo = new CpuInformation();
getCpuInformation(ref cpuInfo);
if (cpuInfo.SimdSupport != SimdTechnology.None)
{
FieldInfo[] fields = typeof(Memory).GetFields(BindingFlags.Static | BindingFlags.NonPublic);
foreach (FieldInfo fieldInfo in fields)
{
// Test for SSSE3 support
if ((cpuInfo.SimdSupport & SimdTechnology.SSSE3) != 0)
{
string entryPoint = String.Format("{0}_{1}", fieldInfo.Name, "SSSE3");
IntPtr address = GetProcAddress.GetAddress(AssemblyPath, entryPoint);
if (address != IntPtr.Zero)
{
fieldInfo.SetValue(null, Marshal.GetDelegateForFunctionPointer(address, fieldInfo.FieldType));
continue;
}
}
// Test for SSE3 support
if ((cpuInfo.SimdSupport & SimdTechnology.SSE3) != 0)
{
string entryPoint = String.Format("{0}_{1}", fieldInfo.Name, "SSE3");
IntPtr address = GetProcAddress.GetAddress(AssemblyPath, entryPoint);
if (address != IntPtr.Zero)
{
fieldInfo.SetValue(null, Marshal.GetDelegateForFunctionPointer(address, fieldInfo.FieldType));
continue;
}
}
// Test for SSE2 support
if ((cpuInfo.SimdSupport & SimdTechnology.SSE2) != 0)
{
string entryPoint = String.Format("{0}_{1}", fieldInfo.Name, "SSE2");
IntPtr address = GetProcAddress.GetAddress(AssemblyPath, entryPoint);
if (address != IntPtr.Zero)
{
fieldInfo.SetValue(null, Marshal.GetDelegateForFunctionPointer(address, fieldInfo.FieldType));
continue;
}
}
// Test for SSE support
if ((cpuInfo.SimdSupport & SimdTechnology.SSE) != 0)
{
string entryPoint = String.Format("{0}_{1}", fieldInfo.Name, "SSE");
IntPtr address = GetProcAddress.GetAddress(AssemblyPath, entryPoint);
if (address != IntPtr.Zero)
{
fieldInfo.SetValue(null, Marshal.GetDelegateForFunctionPointer(address, fieldInfo.FieldType));
continue;
}
}
// Test for MMX support
if ((cpuInfo.SimdSupport & SimdTechnology.MMX) != 0)
{
string entryPoint = String.Format("{0}_{1}", fieldInfo.Name, "MMX");
IntPtr address = GetProcAddress.GetAddress(AssemblyPath, entryPoint);
if (address != IntPtr.Zero)
{
fieldInfo.SetValue(null, Marshal.GetDelegateForFunctionPointer(address, fieldInfo.FieldType));
continue;
}
}
// Reset field
fieldInfo.SetValue(null, null);
}
}
}
