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d4r/tools/windows/ngx_windows_runtime.h
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#pragma once
#include "d3d12_external.h"
#include "pixel_conversion.h"
#include "cuda_image_api.h"
#include "ngx_parameters.h"
#include "ngx_public_abi.h"
#include "d3d12_command_hooks.h"
#include <chrono>
#include <memory>
#include <mutex>
namespace d4r::win {
inline std::string env_path(const char* name) {
const char* value = std::getenv(name);
if (!value || !*value) throw std::runtime_error(std::string("Set the absolute path in ") + name);
if (!std::filesystem::path(diag::wide(value)).is_absolute()) throw std::runtime_error(std::string(name) + " must be absolute");
return value;
}
inline void ngx_check(unsigned result, const char* operation) {
std::printf("D4R_NGX %s result=0x%08x\n", operation, result);
if (result != 1) throw std::runtime_error(std::string(operation) + " NGX=" + std::to_string(result));
}
inline ResourceAccess ngx_resource_access(void* parameters, const char* name, D3D12_RESOURCE_STATES fallback) {
ResourceAccess result(D3D12_RESOURCE_STATES(ngx::uint_value(parameters, name, unsigned(fallback))));
const std::string prefix(name);
result.enhanced = ngx::uint_value(parameters, (prefix + ".Enhanced").c_str()) != 0;
if (result.enhanced) {
result.layout = D3D12_BARRIER_LAYOUT(ngx::uint_value(parameters, (prefix + ".Layout").c_str()));
result.access = D3D12_BARRIER_ACCESS(ngx::uint_value(parameters, (prefix + ".Access").c_str()));
}
return result;
}
inline std::filesystem::path pixel_module_path() {
if (const char* path = std::getenv("D4R_FORMAT_MODULE")) return diag::wide(env_path("D4R_FORMAT_MODULE"));
HMODULE module = nullptr;
if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
reinterpret_cast<LPCWSTR>(&pixel_module_path), &module)) throw std::runtime_error("Locate GPU conversion module directory");
wchar_t path[32768]{}; const DWORD length = GetModuleFileNameW(module, path, 32768);
if (!length || length == 32768) throw std::runtime_error("GPU conversion module path is invalid");
return std::filesystem::path(path).parent_path() / L"pixel_convert_gfx1201.hsaco";
}
struct Runtime {
diag::HipApi hip;
CudaApi cuda;
std::unique_ptr<diag::Library> nvapi;
diag::SearchDirectory featureSearch;
std::unique_ptr<diag::Library> dlss, core;
ExternalApi external;
cuda::ImageApi images;
ComPtr<ID3D12Device> device;
CUdevice ordinal = -1;
CUcontext context = nullptr;
bool initialized = false;
std::unique_ptr<SharedTimeline> timeline;
std::unique_ptr<PixelProgram> pixels;
std::mutex mutex;
ngx::ProjectIdentity project;
ngx::FeatureCommonInfo common{};
std::vector<std::wstring> featurePaths;
std::vector<const wchar_t*> featurePathPointers;
using Init = unsigned(*)(unsigned long long, const wchar_t*, unsigned);
using Shutdown = unsigned(*)();
using Allocate = unsigned(*)(void**);
using Destroy = unsigned(*)(void*);
using Create = unsigned(*)(unsigned, void*, void**);
using Evaluate = unsigned(*)(void*, void*, void*);
using Release = unsigned(*)(void*);
Allocate allocate = nullptr, capabilities = nullptr;
Destroy destroy = nullptr;
Create create = nullptr;
Evaluate evaluate = nullptr;
Release release = nullptr;
Shutdown shutdown = nullptr;
Runtime(ID3D12Device* d3d, unsigned long long app, const wchar_t* data, unsigned sdk,
const ngx::FeatureCommonInfo* info = nullptr, const ngx::ProjectIdentity* identity = nullptr)
: hip(env_path("D4R_HIP_ROOT")), cuda(env_path("D4R_NVCUDA_DLL")),
featureSearch(std::filesystem::path(diag::wide(env_path("D4R_DLSS_DLL"))).parent_path()),
external{hip}, images(cuda), device(d3d) {
if (!d3d) throw std::runtime_error("Null D3D12 device");
try {
hipDeviceProp_t props{};
hip.select_gfx1201(-1, props);
const auto luid = adapter_luid(d3d);
if (std::memcmp(&luid, props.luid, sizeof(luid))) throw std::runtime_error("D3D12/HIP LUID mismatch");
cuda.check(cuda.cuInit(0), "cuInit(Windows runtime)");
int count = 0; cuda.check(cuda.cuDeviceGetCount(&count), "cuDeviceGetCount");
for (int i = 0; i < count; ++i) {
CUdevice candidate = -1; cuda.check(cuda.cuDeviceGet(&candidate, i), "cuDeviceGet");
int bus = -1, pciDevice = -1, domain = -1;
cuda.check(cuda.cuDeviceGetAttribute(&bus, 33, candidate), "PCI bus");
cuda.check(cuda.cuDeviceGetAttribute(&pciDevice, 34, candidate), "PCI device");
cuda.check(cuda.cuDeviceGetAttribute(&domain, 50, candidate), "PCI domain");
if (bus == props.pciBusID && pciDevice == props.pciDeviceID && domain == props.pciDomainID) ordinal = candidate;
}
if (ordinal < 0) throw std::runtime_error("CUDA/HIP PCI identity mismatch");
cuda.check(cuda.cuDevicePrimaryCtxRetain(&context, ordinal), "cuDevicePrimaryCtxRetain");
current();
timeline = std::make_unique<SharedTimeline>(external, d3d);
// NGX's loader can probe CUDA during DLL initialization: establish
// the correct primary context before loading either NVIDIA DLL.
nvapi = std::make_unique<diag::Library>(diag::wide(env_path("D4R_NVAPI_DLL")));
dlss = std::make_unique<diag::Library>(diag::wide(env_path("D4R_DLSS_DLL")));
core = std::make_unique<diag::Library>(diag::wide(env_path("D4R_NGX_CORE")));
allocate = core->symbol<Allocate>("NVSDK_NGX_CUDA_AllocateParameters");
capabilities = core->symbol<Allocate>("NVSDK_NGX_CUDA_GetCapabilityParameters");
destroy = core->symbol<Destroy>("NVSDK_NGX_CUDA_DestroyParameters");
create = core->symbol<Create>("NVSDK_NGX_CUDA_CreateFeature");
evaluate = core->symbol<Evaluate>("NVSDK_NGX_CUDA_EvaluateFeature");
release = core->symbol<Release>("NVSDK_NGX_CUDA_ReleaseFeature");
shutdown = core->symbol<Shutdown>("NVSDK_NGX_CUDA_Shutdown");
if (identity) {
if (identity->id.empty()) throw std::runtime_error("Empty NGX project identity");
project = *identity;
featurePaths.push_back(std::filesystem::path(diag::wide(env_path("D4R_DLSS_DLL"))).parent_path().wstring());
if (info) {
if (info->PathListInfo.Length > 1024 || (info->PathListInfo.Length && !info->PathListInfo.Path)) throw std::runtime_error("Invalid NGX feature path list");
for (unsigned i = 0; i < info->PathListInfo.Length; ++i) if (info->PathListInfo.Path[i]) featurePaths.emplace_back(info->PathListInfo.Path[i]);
if (sdk >= 0x14) common.LoggingInfo = info->LoggingInfo;
}
for (const auto& path : featurePaths) featurePathPointers.push_back(path.c_str());
common.PathListInfo = {featurePathPointers.data(), unsigned(featurePathPointers.size())};
using ProjectInit = unsigned(*)(const char*, int, const char*, const wchar_t*, unsigned, const ngx::FeatureCommonInfo*);
std::printf("D4R_IDENTITY project=%s engine=%d version=%s sdk=0x%x\n", project.id.c_str(),project.engine,project.version.c_str(),sdk);
ngx_check(core->symbol<ProjectInit>("NVSDK_NGX_CUDA_Init_ProjectID")(project.id.c_str(),project.engine,project.version.c_str(),data,sdk,&common), "CUDA Init_ProjectID");
} else {
std::printf("D4R_IDENTITY application=%llu sdk=0x%x\n", app,sdk);
ngx_check(core->symbol<Init>("NVSDK_NGX_CUDA_Init")(app, data, sdk), "CUDA Init(driver ABI)");
}
initialized = true;
void* caps = nullptr;
ngx_check(capabilities(&caps), "CUDA feature capabilities");
if (!caps) throw std::runtime_error("Null CUDA capability parameters");
const int available = ngx::int_value(caps, "SuperSampling.Available", -1);
const int initResult = ngx::int_value(caps, "SuperSampling.FeatureInitResult", -1);
const int needsDriver = ngx::int_value(caps, "SuperSampling.NeedsUpdatedDriver", -1);
std::printf("D4R_CAPABILITIES available=%d feature_init=0x%08x needs_driver=%d\n", available, unsigned(initResult), needsDriver);
ngx_check(destroy(caps), "Destroy capability parameters");
if (available != 1 || initResult != 1 || needsDriver != 0)
throw std::runtime_error("CUDA DLSS is unavailable after capability initialization");
std::printf("D4R_RUNTIME platform=Windows architecture=gfx1201 cpu_frame_copies=0 frame_age=0\n");
} catch (...) { cleanup(); throw; }
}
Runtime(const Runtime&) = delete;
~Runtime() { cleanup(); }
void current() { cuda.check(cuda.cuCtxSetCurrent(context), "cuCtxSetCurrent(runtime)"); }
void cleanup() noexcept {
if (context) (void)cuda.cuCtxSetCurrent(context);
if (initialized) { (void)shutdown(); initialized = false; }
timeline.reset();
pixels.reset();
if (context) {
(void)cuda.cuCtxSynchronize(); (void)cuda.cuCtxSetCurrent(nullptr);
(void)cuda.cuDevicePrimaryCtxRelease_v2(ordinal); context = nullptr;
}
}
};
class Feature {
std::shared_ptr<Runtime> rt_;
void* parameters_ = nullptr;
void* handle_ = nullptr;
CUdeviceptr scratch_ = 0;
ComPtr<ID3D12CommandQueue> queue_;
struct Plane {
ComPtr<ID3D12Resource> texture;
D3D12_RESOURCE_DESC desc{};
std::unique_ptr<SharedPlane> shared;
std::unique_ptr<cuda::Image> image;
std::unique_ptr<PixelAllocation> canonical;
PixelSpec spec{};
} planes_[5];
void cleanup() noexcept {
(void)rt_->cuda.cuCtxSetCurrent(rt_->context);
(void)rt_->cuda.cuCtxSynchronize();
if (handle_) { (void)rt_->release(handle_); handle_ = nullptr; }
for (auto& plane : planes_) {
plane.image.reset(); plane.canonical.reset(); plane.shared.reset(); plane.texture.Reset();
}
if (scratch_) { (void)rt_->cuda.cuMemFree_v2(scratch_); scratch_ = 0; }
if (parameters_) { (void)rt_->destroy(parameters_); parameters_ = nullptr; }
}
public:
unsigned width = 0, height = 0;
explicit Feature(std::shared_ptr<Runtime> runtime, void* parameters) : rt_(std::move(runtime)) {
std::lock_guard<std::mutex> lock(rt_->mutex);
rt_->current();
try {
ngx_check(rt_->allocate(&parameters_), "CUDA AllocateParameters");
ngx::copy_create(parameters, parameters_);
d4r_ngx_set_int(parameters_, "DLSS.Enable.Output.Subrects", ngx::int_value(parameters, "DLSS.Enable.Output.Subrects"));
width = ngx::uint_value(parameters, "Width"); height = ngx::uint_value(parameters, "Height");
std::printf("D4R_CREATE source=%ux%u->%ux%u cuda=%ux%u->%ux%u\n", width, height,
ngx::uint_value(parameters, "OutWidth"), ngx::uint_value(parameters, "OutHeight"),
ngx::uint_value(parameters_, "Width"), ngx::uint_value(parameters_, "Height"),
ngx::uint_value(parameters_, "OutWidth"), ngx::uint_value(parameters_, "OutHeight"));
if (!width || !height) throw std::runtime_error("Zero NGX input dimensions");
rt_->cuda.check(rt_->cuda.cuMemAlloc_v2(&scratch_, 64ull * 1024 * 1024), "NGX VRAM scratch");
d4r_ngx_set_void(parameters_, "Scratch", reinterpret_cast<void*>(uintptr_t(scratch_)));
d4r_ngx_set_ull(parameters_, "Scratch.SizeInBytes", 64ull * 1024 * 1024);
ngx_check(rt_->create(1, parameters_, &handle_), "CUDA CreateFeature");
} catch (...) { cleanup(); throw; }
}
~Feature() { std::lock_guard<std::mutex> lock(rt_->mutex); cleanup(); }
Feature(const Feature&) = delete;
// Explicit harness boundary: all earlier producers must already be queued.
// The forthcoming command-list backend calls the same stages at queue submit.
void evaluate_boundary(ID3D12CommandQueue* queue, void* parameters) {
commands::InternalScope internal;
std::lock_guard<std::mutex> lock(rt_->mutex);
if (!queue) throw std::runtime_error("Null D3D12 queue");
if (queue_ && queue_.Get() != queue) throw std::runtime_error("A feature cannot switch queues without an explicit drain");
queue_ = queue;
ComPtr<ID3D12Device> queueDevice;
dx(queue->GetDevice(IID_PPV_ARGS(queueDevice.GetAddressOf())), "GetDevice(queue)");
ComPtr<IUnknown> queueIdentity, runtimeIdentity;
dx(queueDevice->QueryInterface(IID_PPV_ARGS(queueIdentity.GetAddressOf())), "Query queue device identity");
dx(rt_->device->QueryInterface(IID_PPV_ARGS(runtimeIdentity.GetAddressOf())), "Query runtime device identity");
if (queueIdentity.Get() != runtimeIdentity.Get()) throw std::runtime_error("Queue belongs to a different D3D12 device");
rt_->current();
prepare(parameters);
ComPtr<ID3D12CommandAllocator> inputAllocator, outputAllocator;
ComPtr<ID3D12GraphicsCommandList> inputList, outputList;
auto list = [&](ComPtr<ID3D12CommandAllocator>& allocator, ComPtr<ID3D12GraphicsCommandList>& commandList) {
dx(rt_->device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(allocator.GetAddressOf())), "CreateCommandAllocator(interop)");
dx(rt_->device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, allocator.Get(), nullptr,
IID_PPV_ARGS(commandList.GetAddressOf())), "CreateCommandList(interop)");
};
list(inputAllocator, inputList); list(outputAllocator, outputList);
record_inputs(inputList.Get(), parameters); dx(inputList->Close(), "Close(input copies)");
ID3D12CommandList* before[] = {inputList.Get()}; queue->ExecuteCommandLists(1, before);
try {
execute_cuda(queue);
record_output(outputList.Get(), parameters); dx(outputList->Close(), "Close(output copy)");
ID3D12CommandList* after[] = {outputList.Get()}; queue->ExecuteCommandLists(1, after);
rt_->timeline->drain(queue);
} catch (...) {
// Keep all recorded resources alive until submitted work is complete.
rt_->timeline->drain(queue); throw;
}
}
private:
void prepare(void* parameters) {
static const char* names[] = {"Color", "Depth", "MotionVectors", "Output", "ExposureTexture"};
for (unsigned i = 0; i < 5; ++i) {
ID3D12Resource* texture = nullptr;
(void)d4r_ngx_get_d3d12_resource(parameters, names[i], &texture);
if (!texture) {
if (i < 4) throw std::runtime_error(std::string("Missing resource ") + names[i]);
planes_[i].texture.Reset(); d4r_ngx_set_void(parameters_, names[i], nullptr); continue;
}
auto desc = resource_desc(texture);
if (desc.Dimension != D3D12_RESOURCE_DIMENSION_TEXTURE2D || desc.SampleDesc.Count != 1 || desc.DepthOrArraySize != 1)
throw std::runtime_error("Interop baseline requires single-sample 2D textures");
const bool half = i == 0 || i == 2 || i == 3;
const unsigned channels = i == 0 || i == 3 ? 4 : i == 2 ? 2 : 1;
if (desc.Width > UINT32_MAX) throw std::runtime_error("Texture width exceeds GPU conversion ABI");
const PixelSpec spec = pixel_spec(i, desc.Format);
if (!pixel_supported(i, spec.storage)) throw std::runtime_error(std::string("Unsupported ") + names[i] + " DXGI format=" + std::to_string(desc.Format));
auto& plane = planes_[i];
if (!plane.shared || plane.desc.Width != desc.Width || plane.desc.Height != desc.Height || plane.desc.Format != desc.Format) {
rt_->cuda.check(rt_->cuda.cuCtxSynchronize(), "Synchronize(resize interop)");
plane.image.reset(); plane.canonical.reset(); plane.shared.reset();
plane.shared = std::make_unique<SharedPlane>(rt_->external, rt_->device.Get(), desc);
if (!spec.direct) {
if (!rt_->pixels) rt_->pixels = std::make_unique<PixelProgram>(rt_->hip, pixel_module_path());
plane.canonical = std::make_unique<PixelAllocation>(rt_->hip, unsigned(desc.Width), desc.Height, channels * (half ? 2 : 4));
}
plane.image = std::make_unique<cuda::Image>(rt_->images, unsigned(desc.Width), desc.Height, half ? 16 : 32, channels, i == 3, i == 0 ? 1 : 0);
plane.desc = desc; plane.spec = spec;
std::printf("D4R_FORMAT plane=%s dxgi=%u canonical_channels=%u canonical_bits=%u gpu_conversion=%u cpu_copy=0\n",
names[i], unsigned(desc.Format), channels, half ? 16u : 32u, !spec.direct);
}
plane.texture = texture;
d4r_ngx_set_void(parameters_, names[i], &plane.image->object);
}
ngx::copy_frame(parameters, parameters_);
if (!ngx::uint_value(parameters_, "DLSS.Render.Subrect.Dimensions.Width")) d4r_ngx_set_uint(parameters_, "DLSS.Render.Subrect.Dimensions.Width", width);
if (!ngx::uint_value(parameters_, "DLSS.Render.Subrect.Dimensions.Height")) d4r_ngx_set_uint(parameters_, "DLSS.Render.Subrect.Dimensions.Height", height);
for (const char* name : {"TransparencyMask", "DLSS.Input.Bias.Current.Color.Mask"}) d4r_ngx_set_void(parameters_, name, nullptr);
}
void record_inputs(ID3D12GraphicsCommandList* list, void* parameters) {
for (unsigned i : {0u, 1u, 2u, 4u}) if (planes_[i].texture) {
static const char* states[] = {"D4R.Color.State", "D4R.Depth.State", "D4R.Motion.State", "D4R.Output.State", "D4R.Exposure.State"};
planes_[i].shared->copy_input(list, planes_[i].texture.Get(), ngx_resource_access(parameters, states[i], D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE));
}
}
void execute_cuda(ID3D12CommandQueue* queue) {
const auto begin = std::chrono::steady_clock::now();
rt_->timeline->wait_input(queue);
rt_->cuda.check(rt_->cuda.cuCtxSynchronize(), "Interop input producer completion");
for (unsigned i : {0u, 1u, 2u, 4u}) if (planes_[i].texture) {
auto& plane = planes_[i];
void* data = plane.shared->mapped; uint64_t pitch = plane.shared->footprint.Footprint.RowPitch;
if (plane.canonical) {
rt_->pixels->convert(false, data, pitch, plane.canonical->data, plane.canonical->pitch,
unsigned(plane.desc.Width), plane.desc.Height, plane.spec.storage, i);
data = plane.canonical->data; pitch = plane.canonical->pitch;
}
plane.image->upload_device(reinterpret_cast<uintptr_t>(data), pitch);
}
if (std::getenv("D4R_INTEROP_VERIFY")) {
for (unsigned i : {0u, 1u, 2u, 4u}) if (planes_[i].texture) {
uint32_t sample[8]{};
rt_->hip.check(rt_->hip.hipMemcpy(sample, planes_[i].shared->mapped,
std::min<size_t>(sizeof(sample), planes_[i].shared->bytes), hipMemcpyDeviceToHost), "DIAGNOSTIC external-memory sample");
std::printf("D4R_VRAM_VERIFY plane=%u words=%08x,%08x,%08x,%08x\n", i, sample[0], sample[1], sample[2], sample[3]);
const unsigned bytesPerPixel = i == 0 ? 8 : i == 2 ? 4 : 4;
std::vector<uint8_t> array(size_t(planes_[i].desc.Width) * planes_[i].desc.Height * bytesPerPixel);
planes_[i].image->download(array.data());
uint32_t first = 0; std::memcpy(&first, array.data(), 4);
std::printf("D4R_ARRAY_VERIFY plane=%u first=%08x\n", i, first);
}
}
ngx_check(rt_->evaluate(handle_, parameters_, nullptr), "CUDA EvaluateFeature");
// NGX can use internal nonblocking streams. The default stream alone
// does not establish completion of those streams.
rt_->cuda.check(rt_->cuda.cuCtxSynchronize(), "NGX all-stream completion");
auto& output = planes_[3];
output.image->download_device(reinterpret_cast<uintptr_t>(output.canonical ? output.canonical->data : output.shared->mapped),
output.canonical ? output.canonical->pitch : output.shared->footprint.Footprint.RowPitch);
rt_->cuda.check(rt_->cuda.cuCtxSynchronize(), "VRAM output completion");
if (std::getenv("D4R_VALIDATE_OUTPUT")) {
if (!rt_->pixels) rt_->pixels = std::make_unique<PixelProgram>(rt_->hip, pixel_module_path());
const auto counts = rt_->pixels->validate(output.canonical ? output.canonical->data : output.shared->mapped,
output.canonical ? output.canonical->pitch : output.shared->footprint.Footprint.RowPitch, unsigned(output.desc.Width), output.desc.Height);
std::printf("D4R_OUTPUT_VALIDATION elements=%llu nan=%u inf=%u diagnostics_cpu_bytes=8\n", output.desc.Width * output.desc.Height * 4, counts[0], counts[1]);
if (counts[0] || counts[1]) throw std::runtime_error("DLSS output contains NaN/Inf");
}
if (output.canonical) rt_->pixels->convert(true, output.canonical->data, output.canonical->pitch, output.shared->mapped,
output.shared->footprint.Footprint.RowPitch, unsigned(output.desc.Width), output.desc.Height, output.spec.storage, 3);
rt_->timeline->signal_output(queue);
std::printf("D4R_FRAME cpu_frame_copies=%u frame_age=0 interop_ngx_ms=%.3f\n", std::getenv("D4R_INTEROP_VERIFY") ? 1u : 0u,
std::chrono::duration<double, std::milli>(std::chrono::steady_clock::now() - begin).count());
}
void record_output(ID3D12GraphicsCommandList* list, void* parameters) {
planes_[3].shared->copy_output(list, planes_[3].texture.Get(), ngx_resource_access(parameters, "D4R.Output.State", D3D12_RESOURCE_STATE_UNORDERED_ACCESS));
}
};
}
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