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//===- DX/Device.cpp - DirectX Device API ---------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
#include <wrl/client.h>
#include <cstdint>
#include <d3d12.h>
#include <d3dx12.h>
#include <dxcore.h>
#include <dxgiformat.h>
#include <dxguids.h>
#ifndef _WIN32
#include <poll.h>
#include <sys/eventfd.h>
#include <unistd.h>
#include <wsl/winadapter.h>
#endif
// The windows headers define these macros which conflict with the C++ standard
// library. Undefining them before including any LLVM C++ code prevents errors.
#undef max
#undef min
#include "API/Capabilities.h"
#include "API/Device.h"
#include "DXFeatures.h"
#include "Support/Pipeline.h"
#include "Support/WinError.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Object/DXContainer.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/Signals.h"
#include <codecvt>
#include <locale>
using namespace offloadtest;
using Microsoft::WRL::ComPtr;
template <> char CapabilityValueEnum<directx::ShaderModel>::ID = 0;
template <> char CapabilityValueEnum<directx::RootSignature>::ID = 0;
#define DXFormats(FMT) \
if (Channels == 1) \
return DXGI_FORMAT_R32_##FMT; \
if (Channels == 2) \
return DXGI_FORMAT_R32G32_##FMT; \
if (Channels == 3) \
return DXGI_FORMAT_R32G32B32_##FMT; \
if (Channels == 4) \
return DXGI_FORMAT_R32G32B32A32_##FMT;
static DXGI_FORMAT getDXFormat(DataFormat Format, int Channels) {
switch (Format) {
case DataFormat::Int32:
DXFormats(SINT) break;
case DataFormat::Float32:
DXFormats(FLOAT) break;
default:
llvm_unreachable("Unsupported Resource format specified");
}
return DXGI_FORMAT_UNKNOWN;
}
static DXGI_FORMAT getRawDXFormat(const Resource &R) {
if (!R.isByteAddressBuffer())
return DXGI_FORMAT_UNKNOWN;
switch (R.BufferPtr->Format) {
case DataFormat::Hex16:
case DataFormat::UInt16:
case DataFormat::Int16:
case DataFormat::Float16:
case DataFormat::Hex32:
case DataFormat::UInt32:
case DataFormat::Int32:
case DataFormat::Float32:
case DataFormat::Hex64:
case DataFormat::UInt64:
case DataFormat::Int64:
case DataFormat::Float64:
return DXGI_FORMAT_R32_TYPELESS;
default:
llvm_unreachable("Unsupported Resource format specified");
}
return DXGI_FORMAT_UNKNOWN;
}
static uint32_t getUAVBufferSize(const Resource &R) {
return R.HasCounter
? llvm::alignTo(R.size(), D3D12_UAV_COUNTER_PLACEMENT_ALIGNMENT) +
sizeof(uint32_t)
: R.size();
}
static uint32_t getUAVBufferCounterOffset(const Resource &R) {
return R.HasCounter
? llvm::alignTo(R.size(), D3D12_UAV_COUNTER_PLACEMENT_ALIGNMENT)
: 0;
}
static D3D12_RESOURCE_DIMENSION getDXDimension(ResourceKind RK) {
switch (RK) {
case ResourceKind::Buffer:
case ResourceKind::StructuredBuffer:
case ResourceKind::ByteAddressBuffer:
case ResourceKind::RWStructuredBuffer:
case ResourceKind::RWBuffer:
case ResourceKind::RWByteAddressBuffer:
case ResourceKind::ConstantBuffer:
return D3D12_RESOURCE_DIMENSION_BUFFER;
case ResourceKind::Texture2D:
case ResourceKind::RWTexture2D:
return D3D12_RESOURCE_DIMENSION_TEXTURE2D;
}
llvm_unreachable("All cases handled");
}
enum DXResourceKind { UAV, SRV, CBV };
static DXResourceKind getDXKind(offloadtest::ResourceKind RK) {
switch (RK) {
case ResourceKind::Buffer:
case ResourceKind::StructuredBuffer:
case ResourceKind::ByteAddressBuffer:
case ResourceKind::Texture2D:
return SRV;
case ResourceKind::RWStructuredBuffer:
case ResourceKind::RWBuffer:
case ResourceKind::RWByteAddressBuffer:
case ResourceKind::RWTexture2D:
return UAV;
case ResourceKind::ConstantBuffer:
return CBV;
}
llvm_unreachable("All cases handled");
}
static D3D12_RESOURCE_DESC getResourceDescription(const Resource &R) {
const D3D12_RESOURCE_DIMENSION Dimension = getDXDimension(R.Kind);
const offloadtest::Buffer &B = *R.BufferPtr;
const DXGI_FORMAT Format =
R.isTexture() ? getDXFormat(B.Format, B.Channels) : DXGI_FORMAT_UNKNOWN;
const uint32_t Width =
R.isTexture() ? B.OutputProps.Width : getUAVBufferSize(R);
const uint32_t Height = R.isTexture() ? B.OutputProps.Height : 1;
D3D12_TEXTURE_LAYOUT Layout;
if (R.isTexture())
Layout = getDXKind(R.Kind) == SRV
? D3D12_TEXTURE_LAYOUT_64KB_UNDEFINED_SWIZZLE
: D3D12_TEXTURE_LAYOUT_UNKNOWN;
else
Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
const D3D12_RESOURCE_FLAGS Flags =
R.isReadWrite() ? D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS
: D3D12_RESOURCE_FLAG_NONE;
const D3D12_RESOURCE_DESC ResDesc = {Dimension, 0, Width, Height, 1, 1,
Format, {1, 0}, Layout, Flags};
return ResDesc;
}
static D3D12_SHADER_RESOURCE_VIEW_DESC getSRVDescription(const Resource &R) {
const uint32_t EltSize = R.getElementSize();
const uint32_t NumElts = R.size() / EltSize;
llvm::outs() << " EltSize = " << EltSize << " NumElts = " << NumElts
<< "\n";
D3D12_SHADER_RESOURCE_VIEW_DESC Desc = {};
Desc.Format = R.isRaw()
? getRawDXFormat(R)
: getDXFormat(R.BufferPtr->Format, R.BufferPtr->Channels);
Desc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
switch (R.Kind) {
case ResourceKind::Buffer:
case ResourceKind::StructuredBuffer:
case ResourceKind::ByteAddressBuffer:
Desc.ViewDimension = D3D12_SRV_DIMENSION_BUFFER;
Desc.Buffer =
D3D12_BUFFER_SRV{0, NumElts, R.isStructuredBuffer() ? EltSize : 0,
R.isByteAddressBuffer() ? D3D12_BUFFER_SRV_FLAG_RAW
: D3D12_BUFFER_SRV_FLAG_NONE};
break;
case ResourceKind::Texture2D:
Desc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
Desc.Texture2D = D3D12_TEX2D_SRV{0, 1, 0, 0};
break;
case ResourceKind::RWStructuredBuffer:
case ResourceKind::RWBuffer:
case ResourceKind::RWByteAddressBuffer:
case ResourceKind::RWTexture2D:
case ResourceKind::ConstantBuffer:
llvm_unreachable("Not an SRV type!");
}
return Desc;
}
static D3D12_UNORDERED_ACCESS_VIEW_DESC getUAVDescription(const Resource &R) {
const uint32_t EltSize = R.getElementSize();
const uint32_t NumElts = R.size() / EltSize;
const uint32_t CounterOffset = getUAVBufferCounterOffset(R);
llvm::outs() << " EltSize = " << EltSize << " NumElts = " << NumElts
<< "\n";
D3D12_UNORDERED_ACCESS_VIEW_DESC Desc = {};
Desc.Format = R.isRaw()
? getRawDXFormat(R)
: getDXFormat(R.BufferPtr->Format, R.BufferPtr->Channels);
switch (R.Kind) {
case ResourceKind::RWBuffer:
case ResourceKind::RWStructuredBuffer:
case ResourceKind::RWByteAddressBuffer:
Desc.ViewDimension = D3D12_UAV_DIMENSION_BUFFER;
Desc.Buffer = D3D12_BUFFER_UAV{
0, NumElts, R.isStructuredBuffer() ? EltSize : 0, CounterOffset,
R.isByteAddressBuffer() ? D3D12_BUFFER_UAV_FLAG_RAW
: D3D12_BUFFER_UAV_FLAG_NONE};
break;
case ResourceKind::RWTexture2D:
Desc.ViewDimension = D3D12_UAV_DIMENSION_TEXTURE2D;
Desc.Texture2D = D3D12_TEX2D_UAV{0, 0};
break;
case ResourceKind::StructuredBuffer:
case ResourceKind::Buffer:
case ResourceKind::ByteAddressBuffer:
case ResourceKind::Texture2D:
case ResourceKind::ConstantBuffer:
llvm_unreachable("Not a UAV type!");
}
return Desc;
}
namespace {
class DXDevice : public offloadtest::Device {
private:
ComPtr<IDXCoreAdapter> Adapter;
ComPtr<ID3D12Device> Device;
Capabilities Caps;
struct ResourceSet {
ComPtr<ID3D12Resource> Upload;
ComPtr<ID3D12Resource> Buffer;
ComPtr<ID3D12Resource> Readback;
ComPtr<ID3D12Heap> Heap;
ResourceSet(ComPtr<ID3D12Resource> Upload, ComPtr<ID3D12Resource> Buffer,
ComPtr<ID3D12Resource> Readback,
ComPtr<ID3D12Heap> Heap = nullptr)
: Upload(Upload), Buffer(Buffer), Readback(Readback), Heap(Heap) {}
};
// ResourceBundle will contain one ResourceSet for a singular resource
// or multiple ResourceSets for resource array.
using ResourceBundle = llvm::SmallVector<ResourceSet>;
using ResourcePair = std::pair<offloadtest::Resource *, ResourceBundle>;
struct DescriptorTable {
llvm::SmallVector<ResourcePair> Resources;
};
struct InvocationState {
ComPtr<ID3D12RootSignature> RootSig;
ComPtr<ID3D12DescriptorHeap> DescHeap;
ComPtr<ID3D12PipelineState> PSO;
ComPtr<ID3D12CommandQueue> Queue;
ComPtr<ID3D12CommandAllocator> Allocator;
ComPtr<ID3D12GraphicsCommandList> CmdList;
ComPtr<ID3D12Fence> Fence;
#ifdef _WIN32
HANDLE Event;
#else // WSL
int Event;
#endif
// Resources for graphics pipelines.
ComPtr<ID3D12Resource> RT;
ComPtr<ID3D12Resource> RTReadback;
ComPtr<ID3D12DescriptorHeap> RTVHeap;
ComPtr<ID3D12Resource> VB;
llvm::SmallVector<DescriptorTable> DescTables;
llvm::SmallVector<ResourcePair> RootResources;
};
public:
DXDevice(ComPtr<IDXCoreAdapter> A, ComPtr<ID3D12Device> D, std::string Desc)
: Adapter(A), Device(D) {
Description = Desc;
}
DXDevice(const DXDevice &) = default;
~DXDevice() override = default;
llvm::StringRef getAPIName() const override { return "DirectX"; }
GPUAPI getAPI() const override { return GPUAPI::DirectX; }
static llvm::Expected<DXDevice> create(ComPtr<IDXCoreAdapter> Adapter,
const DeviceConfig &Config) {
ComPtr<ID3D12Device> Device;
if (auto Err =
HR::toError(D3D12CreateDevice(Adapter.Get(), D3D_FEATURE_LEVEL_11_0,
IID_PPV_ARGS(&Device)),
"Failed to create D3D device"))
return Err;
assert(
Adapter->IsPropertySupported(DXCoreAdapterProperty::DriverDescription));
size_t BufferSize;
Adapter->GetPropertySize(DXCoreAdapterProperty::DriverDescription,
&BufferSize);
std::vector<char> DescVec(BufferSize);
Adapter->GetProperty(DXCoreAdapterProperty::DriverDescription, BufferSize,
(void *)DescVec.data());
if (Config.EnableDebugLayer || Config.EnableValidationLayer)
if (auto Err = configureInfoQueue(Device.Get()))
return Err;
return DXDevice(Adapter, Device, std::string(DescVec.data()));
}
const Capabilities &getCapabilities() override {
if (Caps.empty())
queryCapabilities();
return Caps;
}
uint32_t getSubgroupSize() const override {
D3D12_FEATURE_DATA_D3D12_OPTIONS1 Options1 = {};
if (FAILED(Device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS1,
&Options1, sizeof(Options1))))
return 0;
return Options1.WaveLaneCountMin;
}
std::pair<uint32_t, uint32_t> getMinMaxSubgroupSize() const override {
D3D12_FEATURE_DATA_D3D12_OPTIONS1 Options1 = {};
if (FAILED(Device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS1,
&Options1, sizeof(Options1))))
return {0, 0};
return {Options1.WaveLaneCountMin, Options1.WaveLaneCountMax};
}
void printExtra(llvm::raw_ostream &OS) override {
OS << " SubgroupSize: " << getSubgroupSize() << "\n";
auto MinMax = getMinMaxSubgroupSize();
OS << " MinSubgroupSize: " << MinMax.first << "\n";
OS << " MaxSubgroupSize: " << MinMax.second << "\n";
}
void queryCapabilities() {
CD3DX12FeatureSupport Features;
Features.Init(Device.Get());
#define D3D_FEATURE_BOOL(Name) \
Caps.insert( \
std::make_pair(#Name, make_capability<bool>(#Name, Features.Name())));
#define D3D_FEATURE_UINT(Name) \
Caps.insert(std::make_pair( \
#Name, make_capability<uint32_t>(#Name, Features.Name())));
#define D3D_FEATURE_ENUM(NewEnum, Name) \
Caps.insert(std::make_pair( \
#Name, make_capability<NewEnum>( \
#Name, static_cast<NewEnum>(Features.Name()))));
#include "DXFeatures.def"
}
static llvm::Error configureInfoQueue(ID3D12Device *Device) {
#ifdef _WIN32
ComPtr<ID3D12InfoQueue> InfoQueue;
if (auto Err = HR::toError(Device->QueryInterface(InfoQueue.GetAddressOf()),
"Error initializing info queue"))
return Err;
InfoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_CORRUPTION, TRUE);
InfoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_ERROR, TRUE);
InfoQueue->SetBreakOnSeverity(D3D12_MESSAGE_SEVERITY_WARNING, TRUE);
#endif
return llvm::Error::success();
}
llvm::Error createRootSignature(Pipeline &P, InvocationState &State) {
// Try pulling a root signature from the DXIL first
auto ExContainer = llvm::object::DXContainer::create(
P.Shaders[0].Shader->getMemBufferRef());
// If this fails we really have a problem...
if (!ExContainer)
return ExContainer.takeError();
bool HasRootSigPart = false;
for (const auto &Part : *ExContainer)
if (memcmp(Part.Part.Name, "RTS0", 4) == 0)
HasRootSigPart = true;
if (HasRootSigPart) {
const llvm::StringRef Binary = P.Shaders[0].Shader->getBuffer();
if (auto Err = HR::toError(
Device->CreateRootSignature(0, Binary.data(), Binary.size(),
IID_PPV_ARGS(&State.RootSig)),
"Failed to create root signature."))
return Err;
return llvm::Error::success();
}
std::vector<D3D12_ROOT_PARAMETER> RootParams;
const uint32_t DescriptorCount = P.getDescriptorCount();
const std::unique_ptr<D3D12_DESCRIPTOR_RANGE[]> Ranges =
std::unique_ptr<D3D12_DESCRIPTOR_RANGE[]>(
new D3D12_DESCRIPTOR_RANGE[DescriptorCount]);
uint32_t RangeIdx = 0;
for (const auto &D : P.Sets) {
uint32_t DescriptorIdx = 0;
const uint32_t StartRangeIdx = RangeIdx;
for (const auto &R : D.Resources) {
switch (getDXKind(R.Kind)) {
case SRV:
Ranges.get()[RangeIdx].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
break;
case UAV:
Ranges.get()[RangeIdx].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_UAV;
break;
case CBV:
Ranges.get()[RangeIdx].RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_CBV;
break;
}
Ranges.get()[RangeIdx].NumDescriptors = R.BufferPtr->ArraySize;
Ranges.get()[RangeIdx].BaseShaderRegister = R.DXBinding.Register;
Ranges.get()[RangeIdx].RegisterSpace = R.DXBinding.Space;
Ranges.get()[RangeIdx].OffsetInDescriptorsFromTableStart =
DescriptorIdx;
RangeIdx++;
DescriptorIdx += R.BufferPtr->ArraySize;
}
RootParams.push_back(
D3D12_ROOT_PARAMETER{D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE,
{D3D12_ROOT_DESCRIPTOR_TABLE{
static_cast<uint32_t>(D.Resources.size()),
&Ranges.get()[StartRangeIdx]}},
D3D12_SHADER_VISIBILITY_ALL});
}
CD3DX12_ROOT_SIGNATURE_DESC Desc;
Desc.Init(static_cast<uint32_t>(RootParams.size()), RootParams.data(), 0,
nullptr,
P.isGraphics()
? D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT
: D3D12_ROOT_SIGNATURE_FLAG_NONE);
ComPtr<ID3DBlob> Signature;
ComPtr<ID3DBlob> Error;
if (auto Err = HR::toError(
D3D12SerializeRootSignature(&Desc, D3D_ROOT_SIGNATURE_VERSION_1,
&Signature, &Error),
"Failed to seialize root signature.")) {
const std::string Msg =
std::string(reinterpret_cast<char *>(Error->GetBufferPointer()),
Error->GetBufferSize() / sizeof(char));
return joinErrors(
std::move(Err),
llvm::createStringError(std::errc::protocol_error, Msg.c_str()));
}
if (auto Err = HR::toError(
Device->CreateRootSignature(0, Signature->GetBufferPointer(),
Signature->GetBufferSize(),
IID_PPV_ARGS(&State.RootSig)),
"Failed to create root signature."))
return Err;
return llvm::Error::success();
}
llvm::Error createDescriptorHeap(Pipeline &P, InvocationState &State) {
if (P.getDescriptorCount() == 0)
return llvm::Error::success();
const D3D12_DESCRIPTOR_HEAP_DESC HeapDesc = {
D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV,
P.getDescriptorCountWithFlattenedArrays(),
D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE, 0};
if (auto Err = HR::toError(Device->CreateDescriptorHeap(
&HeapDesc, IID_PPV_ARGS(&State.DescHeap)),
"Failed to create descriptor heap."))
return Err;
return llvm::Error::success();
}
llvm::Error createComputePSO(llvm::StringRef DXIL, InvocationState &State) {
const D3D12_COMPUTE_PIPELINE_STATE_DESC Desc = {
State.RootSig.Get(),
{DXIL.data(), DXIL.size()},
0,
{
nullptr,
0,
},
D3D12_PIPELINE_STATE_FLAG_NONE};
if (auto Err = HR::toError(
Device->CreateComputePipelineState(&Desc, IID_PPV_ARGS(&State.PSO)),
"Failed to create PSO."))
return Err;
return llvm::Error::success();
}
llvm::Error createCommandStructures(InvocationState &IS) {
const D3D12_COMMAND_QUEUE_DESC Desc = {D3D12_COMMAND_LIST_TYPE_DIRECT, 0,
D3D12_COMMAND_QUEUE_FLAG_NONE, 0};
if (auto Err = HR::toError(
Device->CreateCommandQueue(&Desc, IID_PPV_ARGS(&IS.Queue)),
"Failed to create command queue."))
return Err;
if (auto Err = HR::toError(
Device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT,
IID_PPV_ARGS(&IS.Allocator)),
"Failed to create command allocator."))
return Err;
if (auto Err = HR::toError(
Device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT,
IS.Allocator.Get(), nullptr,
IID_PPV_ARGS(&IS.CmdList)),
"Failed to create command list."))
return Err;
return llvm::Error::success();
}
void addResourceUploadCommands(Resource &R, InvocationState &IS,
ComPtr<ID3D12Resource> Destination,
ComPtr<ID3D12Resource> Source) {
addUploadBeginBarrier(IS, Destination);
if (R.isTexture()) {
const offloadtest::Buffer &B = *R.BufferPtr;
const D3D12_PLACED_SUBRESOURCE_FOOTPRINT Footprint{
0, CD3DX12_SUBRESOURCE_FOOTPRINT(
getDXFormat(B.Format, B.Channels), B.OutputProps.Width,
B.OutputProps.Height, 1,
B.OutputProps.Width * B.getElementSize())};
const CD3DX12_TEXTURE_COPY_LOCATION DstLoc(Destination.Get(), 0);
const CD3DX12_TEXTURE_COPY_LOCATION SrcLoc(Source.Get(), Footprint);
IS.CmdList->CopyTextureRegion(&DstLoc, 0, 0, 0, &SrcLoc, nullptr);
} else
IS.CmdList->CopyBufferRegion(Destination.Get(), 0, Source.Get(), 0,
R.size());
addUploadEndBarrier(IS, Destination, R.isReadWrite());
}
UINT getNumTiles(std::optional<uint32_t> NumTiles, uint32_t Width) {
UINT Ret;
if (NumTiles.has_value())
Ret = static_cast<UINT>(*NumTiles);
else {
// Map the entire buffer by computing how many 64KB tiles cover it
Ret = static_cast<UINT>(
(Width + D3D12_TILED_RESOURCE_TILE_SIZE_IN_BYTES - 1) /
D3D12_TILED_RESOURCE_TILE_SIZE_IN_BYTES);
// check for overflow
assert(Width < std::numeric_limits<UINT>::max() -
D3D12_TILED_RESOURCE_TILE_SIZE_IN_BYTES - 1);
}
return Ret;
}
llvm::Expected<ResourceBundle> createSRV(Resource &R, InvocationState &IS) {
ResourceBundle Bundle;
const D3D12_RESOURCE_DESC ResDesc = getResourceDescription(R);
const D3D12_RESOURCE_DESC UploadResDesc =
CD3DX12_RESOURCE_DESC::Buffer(R.size());
const D3D12_HEAP_PROPERTIES UploadHeapProps =
CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
uint32_t RegOffset = 0;
for (const auto &ResData : R.BufferPtr->Data) {
llvm::outs() << "Creating SRV: { Size = " << R.size() << ", Register = t"
<< R.DXBinding.Register + RegOffset
<< ", Space = " << R.DXBinding.Space;
if (R.TilesMapped)
llvm::outs() << ", TilesMapped = " << *R.TilesMapped;
llvm::outs() << " }\n";
ComPtr<ID3D12Resource> Buffer;
if (auto Err =
HR::toError(Device->CreateReservedResource(
&ResDesc, D3D12_RESOURCE_STATE_COMMON, nullptr,
IID_PPV_ARGS(&Buffer)),
"Failed to create reserved resource (buffer)."))
return Err;
// Committed upload buffer
ComPtr<ID3D12Resource> UploadBuffer;
if (auto Err = HR::toError(
Device->CreateCommittedResource(
&UploadHeapProps, D3D12_HEAP_FLAG_NONE, &UploadResDesc,
D3D12_RESOURCE_STATE_GENERIC_READ, nullptr,
IID_PPV_ARGS(&UploadBuffer)),
"Failed to create committed resource (upload buffer)."))
return Err;
// Tile mapping setup (only skipped when TilesMapped is set to 0)
const UINT NumTiles = getNumTiles(R.TilesMapped, ResDesc.Width);
ComPtr<ID3D12Heap> Heap; // optional, only created if NumTiles > 0
if (NumTiles > 0) {
// Create a Heap large enough for the mapped tiles
D3D12_HEAP_DESC HeapDesc = {};
HeapDesc.Properties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
HeapDesc.Alignment = D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT;
HeapDesc.SizeInBytes = static_cast<UINT64>(NumTiles) *
D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT;
HeapDesc.Flags = D3D12_HEAP_FLAG_ALLOW_ALL_BUFFERS_AND_TEXTURES;
if (auto Err =
HR::toError(Device->CreateHeap(&HeapDesc, IID_PPV_ARGS(&Heap)),
"Failed to create heap for tiled SRV resource."))
return Err;
// Define one contiguous mapping region
const D3D12_TILED_RESOURCE_COORDINATE StartCoord = {0, 0, 0, 0};
D3D12_TILE_REGION_SIZE RegionSize = {};
RegionSize.NumTiles = NumTiles;
RegionSize.UseBox = FALSE;
const D3D12_TILE_RANGE_FLAGS RangeFlag = D3D12_TILE_RANGE_FLAG_NONE;
const UINT HeapRangeStartOffset = 0;
const UINT RangeTileCount = NumTiles;
ID3D12CommandQueue *CommandQueue = IS.Queue.Get();
CommandQueue->UpdateTileMappings(
Buffer.Get(), 1, &StartCoord, &RegionSize, // One region
Heap.Get(), 1, &RangeFlag, &HeapRangeStartOffset, &RangeTileCount,
D3D12_TILE_MAPPING_FLAG_NONE);
}
// Upload data initialization
void *ResDataPtr = nullptr;
if (SUCCEEDED(UploadBuffer->Map(0, NULL, &ResDataPtr))) {
memcpy(ResDataPtr, ResData.get(), R.size());
UploadBuffer->Unmap(0, nullptr);
} else {
return llvm::createStringError(std::errc::io_error,
"Failed to map SRV upload buffer.");
}
addResourceUploadCommands(R, IS, Buffer, UploadBuffer);
Bundle.emplace_back(UploadBuffer, Buffer, nullptr, Heap);
RegOffset++;
}
return Bundle;
}
// returns the next available HeapIdx
uint32_t bindSRV(Resource &R, InvocationState &IS, uint32_t HeapIdx,
ResourceBundle ResBundle) {
const uint32_t EltSize = R.getElementSize();
const uint32_t NumElts = R.size() / EltSize;
const D3D12_SHADER_RESOURCE_VIEW_DESC SRVDesc = getSRVDescription(R);
const uint32_t DescHandleIncSize = Device->GetDescriptorHandleIncrementSize(
D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
const D3D12_CPU_DESCRIPTOR_HANDLE SRVHandleHeapStart =
IS.DescHeap->GetCPUDescriptorHandleForHeapStart();
for (const ResourceSet &RS : ResBundle) {
llvm::outs() << "SRV: HeapIdx = " << HeapIdx << " EltSize = " << EltSize
<< " NumElts = " << NumElts << "\n";
D3D12_CPU_DESCRIPTOR_HANDLE SRVHandle = SRVHandleHeapStart;
SRVHandle.ptr += HeapIdx * DescHandleIncSize;
Device->CreateShaderResourceView(RS.Buffer.Get(), &SRVDesc, SRVHandle);
HeapIdx++;
}
return HeapIdx;
}
llvm::Expected<ResourceBundle> createUAV(Resource &R, InvocationState &IS) {
ResourceBundle Bundle;
const uint32_t BufferSize = getUAVBufferSize(R);
const D3D12_HEAP_PROPERTIES HeapProp =
CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
const D3D12_RESOURCE_DESC ResDesc = getResourceDescription(R);
const D3D12_HEAP_PROPERTIES ReadBackHeapProp =
CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_READBACK);
const D3D12_RESOURCE_DESC ReadBackResDesc = {
D3D12_RESOURCE_DIMENSION_BUFFER,
0,
BufferSize,
1,
1,
1,
DXGI_FORMAT_UNKNOWN,
{1, 0},
D3D12_TEXTURE_LAYOUT_ROW_MAJOR,
D3D12_RESOURCE_FLAG_NONE};
const D3D12_HEAP_PROPERTIES UploadHeapProp =
CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
const D3D12_RESOURCE_DESC UploadResDesc =
CD3DX12_RESOURCE_DESC::Buffer(BufferSize);
uint32_t RegOffset = 0;
for (const auto &ResData : R.BufferPtr->Data) {
llvm::outs() << "Creating UAV: { Size = " << BufferSize
<< ", Register = u" << R.DXBinding.Register + RegOffset
<< ", Space = " << R.DXBinding.Space
<< ", HasCounter = " << R.HasCounter << " }\n";
ComPtr<ID3D12Resource> Buffer;
if (auto Err = HR::toError(
Device->CreateCommittedResource(
&HeapProp, D3D12_HEAP_FLAG_NONE, &ResDesc,
D3D12_RESOURCE_STATE_COMMON, nullptr, IID_PPV_ARGS(&Buffer)),
"Failed to create committed resource (buffer)."))
return Err;
ComPtr<ID3D12Resource> UploadBuffer;
if (auto Err = HR::toError(
Device->CreateCommittedResource(
&UploadHeapProp, D3D12_HEAP_FLAG_NONE, &UploadResDesc,
D3D12_RESOURCE_STATE_GENERIC_READ, nullptr,
IID_PPV_ARGS(&UploadBuffer)),
"Failed to create committed resource (upload buffer)."))
return Err;
ComPtr<ID3D12Resource> ReadBackBuffer;
if (auto Err = HR::toError(
Device->CreateCommittedResource(
&ReadBackHeapProp, D3D12_HEAP_FLAG_NONE, &ReadBackResDesc,
D3D12_RESOURCE_STATE_COPY_DEST, nullptr,
IID_PPV_ARGS(&ReadBackBuffer)),
"Failed to create committed resource (readback buffer)."))
return Err;
// Initialize the UAV data
void *ResDataPtr = nullptr;
if (auto Err = HR::toError(UploadBuffer->Map(0, nullptr, &ResDataPtr),
"Failed to acquire UAV data pointer."))
return Err;
memcpy(ResDataPtr, ResData.get(), R.size());
UploadBuffer->Unmap(0, nullptr);
addResourceUploadCommands(R, IS, Buffer, UploadBuffer);
Bundle.emplace_back(UploadBuffer, Buffer, ReadBackBuffer);
RegOffset++;
}
return Bundle;
}
// returns the next available HeapIdx
uint32_t bindUAV(Resource &R, InvocationState &IS, uint32_t HeapIdx,
ResourceBundle ResBundle) {
const uint32_t EltSize = R.getElementSize();
const uint32_t NumElts = R.size() / EltSize;
const D3D12_UNORDERED_ACCESS_VIEW_DESC UAVDesc = getUAVDescription(R);
const uint32_t DescHandleIncSize = Device->GetDescriptorHandleIncrementSize(
D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
const D3D12_CPU_DESCRIPTOR_HANDLE UAVHandleHeapStart =
IS.DescHeap->GetCPUDescriptorHandleForHeapStart();
for (const ResourceSet &RS : ResBundle) {
llvm::outs() << "UAV: HeapIdx = " << HeapIdx << " EltSize = " << EltSize
<< " NumElts = " << NumElts
<< " HasCounter = " << R.HasCounter << "\n";
D3D12_CPU_DESCRIPTOR_HANDLE UAVHandle = UAVHandleHeapStart;
UAVHandle.ptr += HeapIdx * DescHandleIncSize;
ID3D12Resource *CounterBuffer = R.HasCounter ? RS.Buffer.Get() : nullptr;
Device->CreateUnorderedAccessView(RS.Buffer.Get(), CounterBuffer,
&UAVDesc, UAVHandle);
HeapIdx++;
}
return HeapIdx;
}
static size_t getCBVSize(size_t Sz) {
return (Sz + 255u) & 0xFFFFFFFFFFFFFF00;
}
llvm::Expected<ResourceBundle> createCBV(Resource &R, InvocationState &IS) {
ResourceBundle Bundle;
const size_t CBVSize = getCBVSize(R.size());
const D3D12_HEAP_PROPERTIES HeapProp =
CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
const D3D12_RESOURCE_DESC ResDesc = {
D3D12_RESOURCE_DIMENSION_BUFFER,
0,
CBVSize,
1,
1,
1,
DXGI_FORMAT_UNKNOWN,
{1, 0},
D3D12_TEXTURE_LAYOUT_ROW_MAJOR,
D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS};
const D3D12_HEAP_PROPERTIES UploadHeapProp =
CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
const D3D12_RESOURCE_DESC UploadResDesc =
CD3DX12_RESOURCE_DESC::Buffer(CBVSize);
uint32_t RegOffset = 0;
for (const auto &ResData : R.BufferPtr->Data) {
llvm::outs() << "Creating CBV: { Size = " << CBVSize << ", Register = b"
<< R.DXBinding.Register + RegOffset
<< ", Space = " << R.DXBinding.Space << " }\n";
ComPtr<ID3D12Resource> Buffer;
if (auto Err = HR::toError(
Device->CreateCommittedResource(
&HeapProp, D3D12_HEAP_FLAG_NONE, &ResDesc,
D3D12_RESOURCE_STATE_COMMON, nullptr, IID_PPV_ARGS(&Buffer)),
"Failed to create committed resource (buffer)."))
return Err;
ComPtr<ID3D12Resource> UploadBuffer;
if (auto Err = HR::toError(
Device->CreateCommittedResource(
&UploadHeapProp, D3D12_HEAP_FLAG_NONE, &UploadResDesc,
D3D12_RESOURCE_STATE_GENERIC_READ, nullptr,
IID_PPV_ARGS(&UploadBuffer)),
"Failed to create committed resource (upload buffer)."))
return Err;
// Initialize the CBV data
void *ResDataPtr = nullptr;
if (auto Err = HR::toError(UploadBuffer->Map(0, nullptr, &ResDataPtr),
"Failed to acquire UAV data pointer."))
return Err;
memcpy(ResDataPtr, ResData.get(), R.size());
// Zero any remaining bytes
if (R.size() < CBVSize) {
void *ExtraData = static_cast<char *>(ResDataPtr) + R.size();
memset(ExtraData, 0, CBVSize - R.size() - 1);
}
UploadBuffer->Unmap(0, nullptr);
addResourceUploadCommands(R, IS, Buffer, UploadBuffer);
Bundle.emplace_back(UploadBuffer, Buffer, nullptr);
RegOffset++;
}
return Bundle;
}
// returns the next available HeapIdx
uint32_t bindCBV(Resource &R, InvocationState &IS, uint32_t HeapIdx,
ResourceBundle ResBundle) {
const size_t CBVSize = getCBVSize(R.size());
const uint32_t DescHandleIncSize = Device->GetDescriptorHandleIncrementSize(
D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
const D3D12_CPU_DESCRIPTOR_HANDLE CVBHandleHeapStart =
IS.DescHeap->GetCPUDescriptorHandleForHeapStart();
for (const ResourceSet &RS : ResBundle) {
llvm::outs() << "CBV: HeapIdx = " << HeapIdx << " Size = " << CBVSize
<< "\n";
const D3D12_CONSTANT_BUFFER_VIEW_DESC CBVDesc = {
RS.Buffer->GetGPUVirtualAddress(), static_cast<uint32_t>(CBVSize)};
D3D12_CPU_DESCRIPTOR_HANDLE CBVHandle = CVBHandleHeapStart;
CBVHandle.ptr += HeapIdx * DescHandleIncSize;
Device->CreateConstantBufferView(&CBVDesc, CBVHandle);
HeapIdx++;
}
return HeapIdx;
}
llvm::Error createBuffers(Pipeline &P, InvocationState &IS) {
auto CreateBuffer =
[&IS,
this](Resource &R,
llvm::SmallVectorImpl<ResourcePair> &Resources) -> llvm::Error {
switch (getDXKind(R.Kind)) {
case SRV: {
auto ExRes = createSRV(R, IS);
if (!ExRes)
return ExRes.takeError();
Resources.push_back(std::make_pair(&R, *ExRes));
break;
}
case UAV: {
auto ExRes = createUAV(R, IS);
if (!ExRes)
return ExRes.takeError();
Resources.push_back(std::make_pair(&R, *ExRes));
break;
}
case CBV: {
auto ExRes = createCBV(R, IS);
if (!ExRes)
return ExRes.takeError();
Resources.push_back(std::make_pair(&R, *ExRes));
break;
}
}
return llvm::Error::success();
};
for (auto &D : P.Sets) {
IS.DescTables.emplace_back(DescriptorTable());
DescriptorTable &Table = IS.DescTables.back();
for (auto &R : D.Resources)
if (auto Err = CreateBuffer(R, Table.Resources))
return Err;
}
// Bind descriptors in descriptor tables.
uint32_t HeapIndex = 0;
for (auto &T : IS.DescTables) {
for (auto &R : T.Resources) {
switch (getDXKind(R.first->Kind)) {
case SRV:
HeapIndex = bindSRV(*(R.first), IS, HeapIndex, R.second);
break;
case UAV:
HeapIndex = bindUAV(*(R.first), IS, HeapIndex, R.second);
break;
case CBV:
HeapIndex = bindCBV(*(R.first), IS, HeapIndex, R.second);
break;
}
}
}
// Setup root descriptors
for (auto &R : P.Settings.DX.RootParams) {
if (R.Kind != dx::RootParamKind::RootDescriptor)
continue;
auto &Resource = std::get<dx::RootResource>(R.Data);
if (auto Err = CreateBuffer(Resource, IS.RootResources))
return Err;
}
return llvm::Error::success();
}
void addUploadBeginBarrier(InvocationState &IS, ComPtr<ID3D12Resource> R) {
const D3D12_RESOURCE_BARRIER Barrier = {
D3D12_RESOURCE_BARRIER_TYPE_TRANSITION,
D3D12_RESOURCE_BARRIER_FLAG_NONE,
{D3D12_RESOURCE_TRANSITION_BARRIER{
R.Get(), D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES,
D3D12_RESOURCE_STATE_COMMON, D3D12_RESOURCE_STATE_COPY_DEST}}};
IS.CmdList->ResourceBarrier(1, &Barrier);
}
void addUploadEndBarrier(InvocationState &IS, ComPtr<ID3D12Resource> R,
bool IsUAV) {
const D3D12_RESOURCE_BARRIER Barrier = {
D3D12_RESOURCE_BARRIER_TYPE_TRANSITION,
D3D12_RESOURCE_BARRIER_FLAG_NONE,
{D3D12_RESOURCE_TRANSITION_BARRIER{
R.Get(), D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES,
D3D12_RESOURCE_STATE_COPY_DEST,
IsUAV ? D3D12_RESOURCE_STATE_UNORDERED_ACCESS
: D3D12_RESOURCE_STATE_GENERIC_READ}}};
IS.CmdList->ResourceBarrier(1, &Barrier);
}
void addReadbackBeginBarrier(InvocationState &IS, ComPtr<ID3D12Resource> R) {
const D3D12_RESOURCE_BARRIER Barrier = CD3DX12_RESOURCE_BARRIER::Transition(
R.Get(), D3D12_RESOURCE_STATE_UNORDERED_ACCESS,
D3D12_RESOURCE_STATE_COPY_SOURCE);
IS.CmdList->ResourceBarrier(1, &Barrier);
}
void addReadbackEndBarrier(InvocationState &IS, ComPtr<ID3D12Resource> R) {
const D3D12_RESOURCE_BARRIER Barrier = CD3DX12_RESOURCE_BARRIER::Transition(
R.Get(), D3D12_RESOURCE_STATE_COPY_SOURCE,
D3D12_RESOURCE_STATE_UNORDERED_ACCESS);
IS.CmdList->ResourceBarrier(1, &Barrier);
}
llvm::Error createEvent(InvocationState &IS) {
if (auto Err = HR::toError(Device->CreateFence(0, D3D12_FENCE_FLAG_NONE,
IID_PPV_ARGS(&IS.Fence)),
"Failed to create fence."))
return Err;
#ifdef _WIN32
IS.Event = CreateEventA(nullptr, false, false, nullptr);
if (!IS.Event)
#else // WSL
IS.Event = eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK);
if (IS.Event == -1)
#endif