private static unsafe void CompressImageBlockLineThread(Object obj)
{
CompressImageBlockLineArgs args = (CompressImageBlockLineArgs)obj;
CompressImageBlockLine(args.width, args.height, args.flags, args.y, args.prgba, args.targetBlock, args.bytesPerBlock);
args.doneEvent.Set();
}
public static unsafe void CompressImage(byte[] rgba, int width, int height, byte[] blocks, SquishFlags flags, bool waitOnDone)
{
// fix any bad flags
flags = FixFlags(flags);
// holds the handles to know which thread are free.
// No more than 50 or Mono commplains.
// On my machine Environment.ProcessorCount give me a nice 98% CPU
ManualResetEvent[] doneEvents = new ManualResetEvent[Environment.ProcessorCount];
for (int i = 0; i < doneEvents.Length; i++)
{
doneEvents[i] = new ManualResetEvent(true);
}
// initialise the block output
fixed(byte *pblocks = blocks, prgba = rgba)
{
int bytesPerBlock = ((flags & SquishFlags.kDxt1) != 0) ? 8 : 16;
byte *targetBlock = pblocks;
// loop over blocks
for (int y = 0; y < height; y += 4)
{
int threadIdx = GetFreeThreadIdx(doneEvents);
doneEvents[threadIdx] = new ManualResetEvent(false);
CompressImageBlockLineArgs args = new CompressImageBlockLineArgs(width, height, flags, y, prgba, targetBlock, bytesPerBlock, doneEvents[threadIdx]);
targetBlock += bytesPerBlock * ((width >> 2) + ((width & 0x3) != 0 ? 1 : 0));
// To debug un comment this line and comment the next one
// Threads catch the exceptions (add a try catch ? )
//CompressImageBlockLineThread(args);
if (waitOnDone && y > (4 * Environment.ProcessorCount))
{
WaitHandle.WaitAny(doneEvents);
}
ThreadPool.QueueUserWorkItem(CompressImageBlockLineThread, args);
}
WaitHandle.WaitAll(doneEvents);
}
}
public static unsafe void CompressImage(byte[] rgba, int width, int height, byte[] blocks, SquishFlags flags, bool waitOnDone)
{
// fix any bad flags
flags = FixFlags(flags);
// holds the handles to know which thread are free.
// No more than 50 or Mono commplains.
// On my machine Environment.ProcessorCount give me a nice 98% CPU
ManualResetEvent[] doneEvents = new ManualResetEvent[Environment.ProcessorCount];
for (int i = 0; i < doneEvents.Length; i++)
{
doneEvents[i] = new ManualResetEvent(true);
}
// initialise the block output
fixed (byte* pblocks = blocks, prgba = rgba)
{
int bytesPerBlock = ((flags & SquishFlags.kDxt1) != 0) ? 8 : 16;
byte* targetBlock = pblocks;
// loop over blocks
for (int y = 0; y < height; y += 4)
{
int threadIdx = GetFreeThreadIdx(doneEvents);
doneEvents[threadIdx] = new ManualResetEvent(false);
CompressImageBlockLineArgs args = new CompressImageBlockLineArgs(width, height, flags, y, prgba, targetBlock, bytesPerBlock, doneEvents[threadIdx]);
targetBlock += bytesPerBlock * ((width >> 2) + ((width & 0x3) != 0 ? 1 : 0));
// To debug un comment this line and comment the next one
// Threads catch the exceptions (add a try catch ? )
//CompressImageBlockLineThread(args);
if (waitOnDone && y > (4*Environment.ProcessorCount))
{
WaitHandle.WaitAny(doneEvents);
}
ThreadPool.QueueUserWorkItem(CompressImageBlockLineThread, args);
}
WaitHandle.WaitAll(doneEvents);
}
}
