public static long GetRequiredIntermediateSize(Resource destResource, int firstSubResource, int numSubResource)
{
var desc = destResource.Description;
long requiredSize = 0;
destResource.GetDevice(Utilities.GetGuidFromType(typeof(Device)), out var ptr);
//TODO : Verify that dispose don't release C++ PTR
using (var device = new Device(ptr))
{
device.GetCopyableFootprints(ref desc, firstSubResource, numSubResource, 0, null, null, null, out requiredSize);
}
return(requiredSize);
}
public static long UpdateSubResources(GraphicsCommandList cmdList, Resource destResource, Resource intermediateResource, long intermediateOffset, int firstSubresource, int numSubresource, SubResourceInformation[] datas)
{
long memToAlloc = (Utilities.SizeOf <PlacedSubResourceFootprint>() + sizeof(uint) + sizeof(UInt64)) * numSubresource;
var layouts = new PlacedSubResourceFootprint[numSubresource];
var numRows = new int[numSubresource];
var rowSizesInBytes = new long[numSubresource];
destResource.GetDevice(Utilities.GetGuidFromType(typeof(Device)), out var ptr);
long result = 0;
using (var device = new Device(ptr))
{
var desc = destResource.Description;
device.GetCopyableFootprints(ref desc, firstSubresource, numSubresource, intermediateOffset, layouts, numRows, rowSizesInBytes, out var requiredSize);
result = UpdateSubResources(cmdList, destResource, intermediateResource, firstSubresource, numSubresource, requiredSize, layouts, rowSizesInBytes, datas);
}
return(result);
}
