internal static void PurgeTextures(long _purgeTotalBytes)
{
Contract.AssertPositive(_purgeTotalBytes);
Debug.TraceLn($"Attempting to purge {_purgeTotalBytes.AsDataSize()} from currently loaded textures");
// For portability purposes
if (IntPtr.Size == 8)
{
var purgeTotalBytes = _purgeTotalBytes;
lock (MostRecentList) {
long totalPurge = 0;
while (purgeTotalBytes > 0 && MostRecentList.Count > 0)
{
if (MostRecentList.Last().TryGetTarget(out var target))
{
var textureSize = unchecked ((long)target.MemorySize);
Debug.TraceLn($"Purging {target.SafeName()} ({textureSize.AsDataSize()})");
purgeTotalBytes -= textureSize;
totalPurge += textureSize;
target.CurrentRecentNode = null;
target.Dispose(true);
}
MostRecentList.RemoveLast();
}
Debug.TraceLn($"Total Purged: {totalPurge.AsDataSize()}");
}
}
else
{
// For 32-bit, truncate down to an integer so this operation goes a bit faster.
Contract.AssertLessEqual(_purgeTotalBytes, (long)uint.MaxValue);
var purgeTotalBytes = unchecked ((uint)_purgeTotalBytes);
lock (MostRecentList) {
uint totalPurge = 0;
while (purgeTotalBytes > 0 && MostRecentList.Count > 0)
{
if (MostRecentList.Last().TryGetTarget(out var target))
{
var textureSize = unchecked ((uint)target.MemorySize);
Debug.TraceLn($"Purging {target.SafeName()} ({textureSize.AsDataSize()})");
purgeTotalBytes -= textureSize;
totalPurge += textureSize;
target.CurrentRecentNode = null;
target.Dispose(true);
}
MostRecentList.RemoveLast();
}
Debug.TraceLn($"Total Purged: {totalPurge.AsDataSize()}");
}
}
}
