/// <summary>
/// Creates a new instance of the buffer.
/// </summary>
/// <param name="context">GPU context that the buffer belongs to</param>
/// <param name="physicalMemory">Physical memory where the buffer is mapped</param>
/// <param name="address">Start address of the buffer</param>
/// <param name="size">Size of the buffer in bytes</param>
/// <param name="baseBuffers">Buffers which this buffer contains, and will inherit tracking handles from</param>
public Buffer(GpuContext context, PhysicalMemory physicalMemory, ulong address, ulong size, IEnumerable <Buffer> baseBuffers = null)
{
_context = context;
_physicalMemory = physicalMemory;
Address = address;
Size = size;
Handle = context.Renderer.CreateBuffer((int)size);
_useGranular = size > GranularBufferThreshold;
IEnumerable <IRegionHandle> baseHandles = null;
if (baseBuffers != null)
{
baseHandles = baseBuffers.SelectMany(buffer =>
{
if (buffer._useGranular)
{
return(buffer._memoryTrackingGranular.GetHandles());
}
else
{
return(Enumerable.Repeat(buffer._memoryTracking.GetHandle(), 1));
}
});
}
if (_useGranular)
{
_memoryTrackingGranular = physicalMemory.BeginGranularTracking(address, size, baseHandles);
_memoryTrackingGranular.RegisterPreciseAction(address, size, PreciseAction);
}
else
{
_memoryTracking = physicalMemory.BeginTracking(address, size);
if (baseHandles != null)
{
_memoryTracking.Reprotect(false);
foreach (IRegionHandle handle in baseHandles)
{
if (handle.Dirty)
{
_memoryTracking.Reprotect(true);
}
handle.Dispose();
}
}
_memoryTracking.RegisterPreciseAction(PreciseAction);
}
_externalFlushDelegate = new RegionSignal(ExternalFlush);
_loadDelegate = new Action <ulong, ulong>(LoadRegion);
_modifiedDelegate = new Action <ulong, ulong>(RegionModified);
}
/// <summary>
/// Creates a new instance of the GPU memory manager.
/// </summary>
/// <param name="physicalMemory">Physical memory that this memory manager will map into</param>
internal MemoryManager(PhysicalMemory physicalMemory)
{
Physical = physicalMemory;
CounterCache = new CounterCache();
_pageTable = new ulong[PtLvl0Size][];
MemoryUnmapped += Physical.TextureCache.MemoryUnmappedHandler;
MemoryUnmapped += Physical.BufferCache.MemoryUnmappedHandler;
MemoryUnmapped += CounterCache.MemoryUnmappedHandler;
}
/// <summary>
/// Creates a new instance of the buffer manager.
/// </summary>
/// <param name="context">The GPU context that the buffer manager belongs to</param>
/// <param name="physicalMemory">Physical memory where the cached buffers are mapped</param>
public BufferCache(GpuContext context, PhysicalMemory physicalMemory)
{
_context = context;
_physicalMemory = physicalMemory;
_buffers = new RangeList <Buffer>();
_bufferOverlaps = new Buffer[OverlapsBufferInitialCapacity];
_dirtyCache = new Dictionary <ulong, BufferCacheEntry>();
}
/// <summary>
/// Creates a new MultiRangeWritableBlock.
/// </summary>
/// <param name="range">The MultiRange to write to</param>
/// <param name="physicalMemory">The PhysicalMemory the given MultiRange addresses</param>
public MultiRangeWritableBlock(MultiRange range, PhysicalMemory physicalMemory)
{
_range = range;
_physicalMemory = physicalMemory;
}
