// generic version for page creation
protected virtual Boolean CreatePage(Int64 sizeInBytes, H1OptionalParameters options = null)
{
// invalid call for create page
if (Owner.PageType != H1GpuMemoryPageType.Normal)
{
return(false);
}
// create resource encapsulated GPU API layer
H1HeapType heapType = H1HeapType.Unknown;
H1ResourceStates usage = H1ResourceStates.Invalid;
H1GpuResourceDesc resourceDesc = new H1GpuResourceDesc();
resourceDesc.Alignment = 0; // depends on GDI decision for choosing appropriate alignment
resourceDesc.Height = 1;
resourceDesc.DepthOrArraySize = 1;
resourceDesc.MipLevels = 1;
resourceDesc.Format = H1PixelFormat.Unknown;
resourceDesc.SampleDesc.Count = 1;
resourceDesc.SampleDesc.Quality = 0;
resourceDesc.Layout = H1TextureLayout.RowMajor;
if (Owner.Type != H1GpuMemoryType.GpuWritable)
{
// invalid gpu memory type
// CpuWritable type should be H1GpuMemoryPageSegmented type
return(false);
}
// GPU-writable
heapType = H1HeapType.Default;
resourceDesc.Width = Convert.ToUInt32(sizeInBytes);
// apply optional parameters
if (options != null)
{
resourceDesc.Flags = options.ResourceFlags;
usage = options.ResourceStates;
}
// create new page resource
//if (!Resource.CreateResource(heapType, resourceDesc, usage))
{
return(false);
}
//return true;
}
public static H1GpuMemoryPageBuffer CreatePage(H1GpuMemoryChunk memoryChunk, Int64 sizeInBytes, H1OptionalParameters options = null)
{
H1GpuMemoryPageBuffer newGpuMemoryPageBuffer = new H1GpuMemoryPageBuffer(memoryChunk);
if (!newGpuMemoryPageBuffer.CreatePage(sizeInBytes, options))
{
return(null);
}
return(newGpuMemoryPageBuffer);
}