H1GpuHeapResourceInfo CreatePlacedResourceSinglePlatformDependent(H1GpuResourceDesc resourceDesc, H1ResourceStates defaultUsage)
{
// get device ptr from the renderer
Device deviceDX12 = H1Global <H1ManagedRenderer> .Instance.Device;
H1GpuResourceSingle newRes = H1GpuResourceSingle.CreateEmptyGpuResource();
// convert H1ResourceDesc to ResourceDesc for dx12
ResourceDescription resourceDescDX12 = H1GpuResource.ConvertToResourceDescDx12(resourceDesc);
ResourceStates defaultStates = (ResourceStates)H1GpuResource.ResourceStateMapper[Convert.ToInt32(defaultUsage)];
// get resource allocation info and find proper resource size and alignments
ResourceAllocationInformation allocInfo = deviceDX12.GetResourceAllocationInfo(0, resourceDescDX12);
Int64 sizeInBytes = allocInfo.SizeInBytes;
Int64 alignment = allocInfo.Alignment;
if (alignment > 512)
{
throw new InvalidOperationException("alignment is bigger than 512 bytes, please check!");
}
// request number of segments to resource alloc policy (segments)
H1GpuResAllocRange newRange = m_HeapResAllocPolicy.Allocate(sizeInBytes);
if (newRange == null) // there is no current available blocks to allocate
{
return(null);
}
// with new range,
Int64 offsetInBytes = newRange.StartOffset * H1GpuResAllocPolicySegmented.DefaultSegmentSizeForHeap;
Resource newResDX12 = deviceDX12.CreatePlacedResource(m_HeapInstance, offsetInBytes, resourceDescDX12, defaultStates);
if (newResDX12 == null) // failed to create placed resource
{
return(null);
}
// set GpuResource for newly created placed resource
newRes.SetPlacedResourcePlatformDependent(newResDX12);
// create heap resource info
H1GpuHeapResourceInfo newResourceInfo = new H1GpuHeapResourceInfo()
{
Resource = newRes,
ResourceAllocRange = newRange
};
return(newResourceInfo);
}
public static ResourceDescription Buffer(ResourceAllocationInformation resourceAllocInfowidth, ResourceOptionFlags flags = ResourceOptionFlags.None)
{
return(new ResourceDescription(ResourceDimension.Buffer, resourceAllocInfowidth.Alignment, resourceAllocInfowidth.Size,
1, 1, 1, DXGI.Format.Unknown, 1, 0, TextureLayout.RowMajor, flags));
}
public static ResourceDescription Buffer(ResourceAllocationInformation resourceAllocInfowidth, ResourceFlags flags = ResourceFlags.None)
{
return new ResourceDescription(ResourceDimension.Buffer, resourceAllocInfowidth.Alignment, resourceAllocInfowidth.SizeInBytes,
1, 1, 1, DXGI.Format.Unknown, 1, 0, TextureLayout.RowMajor, flags);
}