private void FlushOrInvalidateMappedMemoryRange(MemoryAlloc alloc, ulong offset, ulong size, bool flush)
{
if (alloc.Allocator != this)
{
throw new ArgumentException(nameof(alloc));
}
if (alloc.Size < offset + size)
{
throw new ArgumentException();
}
if (size == 0)
{
return;
}
var memoryType = alloc.Memory.Type;
var hostCoherent = (memoryType.PropertyFlags & SharpVulkan.MemoryPropertyFlags.HostCoherent) != 0;
if (hostCoherent)
{
return;
}
var nonCoherentAtomSize = Context.PhysicalDeviceLimits.NonCoherentAtomSize;
var rangeStart = GraphicsUtility.AlignDown(alloc.Offset + offset, nonCoherentAtomSize);
var rangeEnd = GraphicsUtility.AlignUp(alloc.Offset + offset + size, nonCoherentAtomSize);
if (rangeEnd > alloc.Memory.Size)
{
rangeEnd = alloc.Memory.Size;
}
var range = new SharpVulkan.MappedMemoryRange {
StructureType = SharpVulkan.StructureType.MappedMemoryRange,
Memory = alloc.Memory.Memory,
Offset = rangeStart,
Size = rangeEnd - rangeStart
};
if (flush)
{
Context.Device.FlushMappedMemoryRanges(1, &range);
}
else
{
Context.Device.InvalidateMappedMemoryRanges(1, &range);
}
}
