private void InitializeFromImpl(DataBox[] dataBoxes = null)
{
bool hasInitData = dataBoxes != null && dataBoxes.Length > 0;
if (ParentTexture != null)
{
ParentResource = ParentTexture;
NativeDeviceChild = ParentTexture.NativeDeviceChild;
}
if (NativeDeviceChild == null)
{
ClearValue?clearValue = GetClearValue();
ResourceDescription nativeDescription;
switch (Dimension)
{
case TextureDimension.Texture1D:
nativeDescription = ConvertToNativeDescription1D();
break;
case TextureDimension.Texture2D:
case TextureDimension.TextureCube:
nativeDescription = ConvertToNativeDescription2D();
break;
case TextureDimension.Texture3D:
nativeDescription = ConvertToNativeDescription3D();
break;
default:
throw new ArgumentOutOfRangeException();
}
var initialResourceState = ResourceStates.GenericRead;
var heapType = HeapType.Default;
var currentResourceState = initialResourceState;
if (Usage == GraphicsResourceUsage.Staging)
{
heapType = HeapType.Readback;
NativeResourceState = ResourceStates.CopyDestination;
int totalSize = ComputeBufferTotalSize();
nativeDescription = ResourceDescription.Buffer(totalSize);
// Staging textures on DirectX 12 use buffer internally
NativeDeviceChild = GraphicsDevice.NativeDevice.CreateCommittedResource(new HeapProperties(heapType), HeapFlags.None, nativeDescription, NativeResourceState);
if (hasInitData)
{
var commandList = GraphicsDevice.NativeCopyCommandList;
commandList.Reset(GraphicsDevice.NativeCopyCommandAllocator, null);
Resource uploadResource;
int uploadOffset;
var uploadMemory = GraphicsDevice.AllocateUploadBuffer(totalSize, out uploadResource, out uploadOffset, TextureSubresourceAlignment);
// Copy data to the upload buffer
int dataBoxIndex = 0;
var uploadMemoryMipStart = uploadMemory;
for (int arraySlice = 0; arraySlice < ArraySize; arraySlice++)
{
for (int mipLevel = 0; mipLevel < MipLevels; mipLevel++)
{
var databox = dataBoxes[dataBoxIndex++];
var mipHeight = CalculateMipSize(Width, mipLevel);
var mipRowPitch = ComputeRowPitch(mipLevel);
var uploadMemoryCurrent = uploadMemoryMipStart;
var dataPointerCurrent = databox.DataPointer;
for (int rowIndex = 0; rowIndex < mipHeight; rowIndex++)
{
Utilities.CopyMemory(uploadMemoryCurrent, dataPointerCurrent, mipRowPitch);
uploadMemoryCurrent += mipRowPitch;
dataPointerCurrent += databox.RowPitch;
}
uploadMemoryMipStart += ComputeSubresourceSize(mipLevel);
}
}
// Copy from upload heap to actual resource
commandList.CopyBufferRegion(NativeResource, 0, uploadResource, uploadOffset, totalSize);
commandList.Close();
StagingFenceValue = 0;
GraphicsDevice.WaitCopyQueue();
}
return;
}
if (hasInitData)
{
currentResourceState = ResourceStates.CopyDestination;
}
// TODO D3D12 move that to a global allocator in bigger committed resources
NativeDeviceChild = GraphicsDevice.NativeDevice.CreateCommittedResource(new HeapProperties(heapType), HeapFlags.None, nativeDescription, currentResourceState, clearValue);
GraphicsDevice.RegisterTextureMemoryUsage(SizeInBytes);
if (hasInitData)
{
// Trigger copy
var commandList = GraphicsDevice.NativeCopyCommandList;
commandList.Reset(GraphicsDevice.NativeCopyCommandAllocator, null);
long textureCopySize;
var placedSubresources = new PlacedSubResourceFootprint[dataBoxes.Length];
var rowCounts = new int[dataBoxes.Length];
var rowSizeInBytes = new long[dataBoxes.Length];
GraphicsDevice.NativeDevice.GetCopyableFootprints(ref nativeDescription, 0, dataBoxes.Length, 0, placedSubresources, rowCounts, rowSizeInBytes, out textureCopySize);
SharpDX.Direct3D12.Resource uploadResource;
int uploadOffset;
var uploadMemory = GraphicsDevice.AllocateUploadBuffer((int)textureCopySize, out uploadResource, out uploadOffset, TextureSubresourceAlignment);
for (int i = 0; i < dataBoxes.Length; ++i)
{
var databox = dataBoxes[i];
var dataPointer = databox.DataPointer;
var rowCount = rowCounts[i];
var sliceCount = placedSubresources[i].Footprint.Depth;
var rowSize = (int)rowSizeInBytes[i];
var destRowPitch = placedSubresources[i].Footprint.RowPitch;
// Memcpy data
for (int z = 0; z < sliceCount; ++z)
{
var uploadMemoryCurrent = uploadMemory + (int)placedSubresources[i].Offset + z * destRowPitch * rowCount;
var dataPointerCurrent = dataPointer + z * databox.SlicePitch;
for (int y = 0; y < rowCount; ++y)
{
Utilities.CopyMemory(uploadMemoryCurrent, dataPointerCurrent, rowSize);
uploadMemoryCurrent += destRowPitch;
dataPointerCurrent += databox.RowPitch;
}
}
// Adjust upload offset (circular dependency between GetCopyableFootprints and AllocateUploadBuffer)
placedSubresources[i].Offset += uploadOffset;
commandList.CopyTextureRegion(new TextureCopyLocation(NativeResource, i), 0, 0, 0, new TextureCopyLocation(uploadResource, placedSubresources[i]), null);
}
commandList.ResourceBarrierTransition(NativeResource, ResourceStates.CopyDestination, initialResourceState);
commandList.Close();
GraphicsDevice.WaitCopyQueue();
}
NativeResourceState = initialResourceState;
}
NativeShaderResourceView = GetShaderResourceView(ViewType, ArraySlice, MipLevel);
NativeRenderTargetView = GetRenderTargetView(ViewType, ArraySlice, MipLevel);
NativeDepthStencilView = GetDepthStencilView(out HasStencil);
NativeUnorderedAccessView = GetUnorderedAccessView(ViewType, ArraySlice, MipLevel);
}
/// <summary>
/// Explicitly recreate buffer with given data. Usually called after a <see cref="GraphicsDevice"/> reset.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="dataPointer"></param>
public void Recreate(IntPtr dataPointer)
{
// TODO D3D12 where should that go longer term? should it be precomputed for future use? (cost would likely be additional check on SetDescriptorSets/Draw)
NativeResourceState = ResourceStates.Common;
var bufferFlags = bufferDescription.BufferFlags;
if ((bufferFlags & BufferFlags.ConstantBuffer) != 0)
{
NativeResourceState |= ResourceStates.VertexAndConstantBuffer;
}
if ((bufferFlags & BufferFlags.IndexBuffer) != 0)
{
NativeResourceState |= ResourceStates.IndexBuffer;
}
if ((bufferFlags & BufferFlags.VertexBuffer) != 0)
{
NativeResourceState |= ResourceStates.VertexAndConstantBuffer;
}
if ((bufferFlags & BufferFlags.ShaderResource) != 0)
{
NativeResourceState |= ResourceStates.PixelShaderResource | ResourceStates.NonPixelShaderResource;
}
if ((bufferFlags & BufferFlags.StructuredBuffer) != 0)
{
if (bufferDescription.StructureByteStride <= 0)
{
throw new ArgumentException("Element size cannot be less or equal 0 for structured buffer");
}
}
if ((bufferFlags & BufferFlags.ArgumentBuffer) == BufferFlags.ArgumentBuffer)
{
NativeResourceState |= ResourceStates.IndirectArgument;
}
var heapType = HeapType.Default;
if (Usage == GraphicsResourceUsage.Staging)
{
if (dataPointer != IntPtr.Zero)
{
throw new NotImplementedException("D3D12: Staging buffers can't be created with initial data.");
}
heapType = HeapType.Readback;
NativeResourceState = ResourceStates.CopyDestination;
}
else if (Usage == GraphicsResourceUsage.Dynamic)
{
heapType = HeapType.Upload;
NativeResourceState = ResourceStates.GenericRead;
}
// TODO D3D12 move that to a global allocator in bigger committed resources
NativeDeviceChild = GraphicsDevice.NativeDevice.CreateCommittedResource(new HeapProperties(heapType), HeapFlags.None, nativeDescription, dataPointer != IntPtr.Zero ? ResourceStates.CopyDestination : NativeResourceState);
GPUVirtualAddress = NativeResource.GPUVirtualAddress;
if (dataPointer != IntPtr.Zero)
{
if (heapType == HeapType.Upload)
{
var uploadMemory = NativeResource.Map(0);
Utilities.CopyMemory(uploadMemory, dataPointer, SizeInBytes);
NativeResource.Unmap(0);
}
else
{
// Copy data in upload heap for later copy
// TODO D3D12 move that to a shared upload heap
SharpDX.Direct3D12.Resource uploadResource;
int uploadOffset;
var uploadMemory = GraphicsDevice.AllocateUploadBuffer(SizeInBytes, out uploadResource, out uploadOffset);
Utilities.CopyMemory(uploadMemory, dataPointer, SizeInBytes);
// TODO D3D12 lock NativeCopyCommandList usages
var commandList = GraphicsDevice.NativeCopyCommandList;
commandList.Reset(GraphicsDevice.NativeCopyCommandAllocator, null);
// Copy from upload heap to actual resource
commandList.CopyBufferRegion(NativeResource, 0, uploadResource, uploadOffset, SizeInBytes);
// Switch resource to proper read state
commandList.ResourceBarrierTransition(NativeResource, 0, ResourceStates.CopyDestination, NativeResourceState);
commandList.Close();
GraphicsDevice.WaitCopyQueue();
}
}
NativeShaderResourceView = GetShaderResourceView(ViewFormat);
NativeUnorderedAccessView = GetUnorderedAccessView(ViewFormat);
}