/// <summary>
/// Get the <see cref="CopyDelegate"/> defined by hosting system, if possible.
/// </summary>
/// <returns></returns>
private static CopyDelegate GetPlatformMemcpy()
{
IntPtr memoryCopyPtr;
switch (Platform.CurrentPlatformId)
{
case Platform.Id.WindowsNT:
memoryCopyPtr = GetProcAddressOS.GetProcAddress("msvcrt.dll", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
return((CopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(CopyDelegate)));
}
return(null);
case Platform.Id.Linux:
memoryCopyPtr = GetProcAddressOS.GetProcAddress("libc.so.6", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
return((CopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(CopyDelegate)));
}
return(null);
default:
return(null);
}
}
/// <summary>
/// Ensure <see cref="MemoryCopy"/> functionality.
/// </summary>
private static void EnsureMemoryCopy()
{
if (MemoryCopyPointer == null)
{
IntPtr memoryCopyPtr;
switch (Platform.CurrentPlatformId)
{
case Platform.Id.WindowsNT:
memoryCopyPtr = GetProcAddressOS.GetProcAddress("msvcrt.dll", "memcpy");
if (memoryCopyPtr != IntPtr.Zero)
{
MemoryCopyPointer = (MemoryCopyDelegate)Marshal.GetDelegateForFunctionPointer(memoryCopyPtr, typeof(MemoryCopyDelegate));
return;
}
throw new NotSupportedException("no suitable memcpy support");
case Platform.Id.Linux:
memoryCopyPtr = GetProcAddressOS.GetProcAddress("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>
/// Static constructor.
/// </summary>
static GetGLProcAddressGLX()
{
IntPtr functionPtr = GetProcAddressOS.GetProcAddress(Library, "glXGetProcAddress");
if (functionPtr != IntPtr.Zero)
{
Delegates.pglXGetProcAddress = (Delegates.glXGetProcAddress)Marshal.GetDelegateForFunctionPointer(functionPtr, typeof(Delegates.glXGetProcAddress));
}
}
