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Scene.cpp
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Scene.cpp
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//*********************************************************
//
// Copyright 2020 Intel Corporation
//
// Permission is hereby granted, free of charge, to any
// person obtaining a copy of this software and associated
// documentation files(the "Software"), to deal in the Software
// without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to
// whom the Software is furnished to do so, subject to the
// following conditions :
// The above copyright notice and this permission notice shall
// be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT.IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
//*********************************************************
#include "pch.h"
#include "Scene.h"
#include "D3D12GpuTimer.h"
#include "Gui.h"
#include "TextureViewer.h"
#include "BufferViewer.h"
#include "FrustumViewer.h"
#include "WindowCapture.h"
#pragma comment(lib, "d3d12.lib")
#pragma comment(lib, "d3dcompiler.lib")
#pragma comment(lib, "dxgi.lib")
#pragma comment(lib, "dxguid.lib")
#pragma comment(lib, "TileUpdateManager.lib")
using namespace DirectX;
// NOTE: the last value must be 0 for TSS. It signifies the pixel has been written to
const FLOAT Scene::m_clearColor[4] = { 0, 0, 0.05f, 0 };
enum class DescriptorHeapOffsets
{
FRAME_CBV, // b0
GUI,
SHARED_MIN_MIP_MAP,
NumEntries
};
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
Scene::Scene(const CommandLineArgs& in_args, HWND in_hwnd) :
m_args(in_args)
, m_hwnd(in_hwnd)
, m_windowInfo{}
, m_windowedSupportsTearing(false)
, m_deviceRemoved(false)
, m_frameIndex(0)
, m_renderFenceValue(0)
, m_frameFenceValues{}
, m_renderFenceEvent(0)
, m_rtvDescriptorSize(0)
, m_srvUavCbvDescriptorSize(0)
, m_dsvDescriptorSize(0)
, m_aspectRatio(0)
, m_pFrameConstantData(nullptr)
// visuals
, m_showFrustum(!in_args.m_visualizeFrustum) // need to force first-time creation
, m_useDirectStorage(in_args.m_useDirectStorage)
, m_pGui(nullptr)
, m_pTextureViewer(nullptr)
, m_pMinMipMapViewer(nullptr)
, m_pFeedbackViewer(nullptr)
, m_pFrustumViewer(nullptr)
// thread
, m_queueFeedbackIndex(0)
, m_prevNumFeedbackObjects(SharedConstants::SWAP_CHAIN_BUFFER_COUNT, 1)
// statistics
, m_renderThreadTimes(in_args.m_statisticsNumFrames)
, m_updateFeedbackTimes(in_args.m_statisticsNumFrames)
, m_pGpuTimer(nullptr)
{
m_windowInfo.cbSize = sizeof(WINDOWINFO);
#if ENABLE_DEBUG_LAYER
InitDebugLayer();
#endif
UINT flags = 0;
#ifdef _DEBUG
flags |= DXGI_CREATE_FACTORY_DEBUG;
#endif
if (FAILED(CreateDXGIFactory2(flags, IID_PPV_ARGS(&m_factory))))
{
flags &= ~DXGI_CREATE_FACTORY_DEBUG;
ThrowIfFailed(CreateDXGIFactory2(flags, IID_PPV_ARGS(&m_factory)));
}
ComPtr<IDXGIAdapter1> adapter;
DXGI_ADAPTER_DESC1 desc;
if (m_args.m_adapterDescription.size())
{
std::wstring lowerCaseAdapterDesc = m_args.m_adapterDescription;
for (auto& c : lowerCaseAdapterDesc) { c = ::towlower(c); }
for (UINT i = 0; m_factory->EnumAdapters1(i, &adapter) != DXGI_ERROR_NOT_FOUND; ++i)
{
ThrowIfFailed(adapter->GetDesc1(&desc));
std::wstring description(desc.Description);
for (auto& c : description) { c = ::towlower(c); }
std::size_t found = description.find(lowerCaseAdapterDesc);
if (found != std::string::npos)
{
break;
}
}
}
else
{
ThrowIfFailed(m_factory->EnumAdapters1(0, &adapter));
ThrowIfFailed(adapter->GetDesc1(&desc));
}
std::wstring adapterDescription = desc.Description;
// does this device support sampler feedback?
D3D12_FEATURE_DATA_D3D12_OPTIONS7 feedbackOptions{};
HRESULT hr = D3D12CreateDevice(adapter.Get(), D3D_FEATURE_LEVEL_12_0, IID_PPV_ARGS(&m_device));
if (SUCCEEDED(hr))
{
m_device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS7, &feedbackOptions, sizeof(feedbackOptions));
}
if (0 == feedbackOptions.SamplerFeedbackTier)
{
std::wstring msg = L"Sampler Feedback not supported by\n";
msg += adapterDescription;
MessageBox(0, msg.c_str(), L"Error", MB_OK);
exit(-1);
}
D3D12_FEATURE_DATA_D3D12_OPTIONS tileOptions{};
m_device->CheckFeatureSupport(D3D12_FEATURE_D3D12_OPTIONS, &tileOptions, sizeof(tileOptions));
if (0 == tileOptions.TiledResourcesTier)
{
std::wstring msg = L"Tiled Resources not supported by\n";
msg += adapterDescription;
MessageBox(0, msg.c_str(), L"Error", MB_OK);
exit(-1);
}
m_pGpuTimer = new D3D12GpuTimer(m_device.Get(), 8, D3D12GpuTimer::TimerType::Direct);
// get the adapter this device was created with
LUID adapterLUID = m_device->GetAdapterLuid();
ThrowIfFailed(m_factory->EnumAdapterByLuid(adapterLUID, IID_PPV_ARGS(&m_adapter)));
// descriptor sizes
m_rtvDescriptorSize = m_device->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
m_srvUavCbvDescriptorSize = m_device->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV);
m_dsvDescriptorSize = m_device->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_DSV);
// creation order below matters
CreateDescriptorHeaps();
CreateCommandQueue();
CreateSwapChain();
CreateFence();
StartStreamingLibrary();
CreateSampler();
CreateConstantBuffers();
float eyePos = 100.0f;
XMVECTOR vEyePt = XMVectorSet(eyePos, eyePos, eyePos, 1.0f);
XMVECTOR lookAt = XMVectorSet(0.0f, 0.0f, 0.0f, 1.0f);
XMVECTOR vUpVec = XMVectorSet(0.0f, 1.0f, 0.0f, 1.0f);
m_viewMatrix = XMMatrixLookAtLH(vEyePt, lookAt, vUpVec);
XMVECTOR pDet;
m_viewMatrixInverse = XMMatrixInverse(&pDet, m_viewMatrix);
m_pGui = new Gui(m_hwnd, m_device.Get(), m_srvHeap.Get(), (UINT)DescriptorHeapOffsets::GUI, m_swapBufferCount, SharedConstants::SWAP_CHAIN_FORMAT, adapterDescription, m_args);
m_pFrustumViewer = new FrustumViewer(m_device.Get(),
SharedConstants::SWAP_CHAIN_FORMAT,
SharedConstants::DEPTH_FORMAT,
m_args.m_sampleCount,
[&](ID3D12Resource* out_pBuffer, const void* in_pBytes, size_t in_numBytes, D3D12_RESOURCE_STATES in_finalState)
{
SceneObjects::InitializeBuffer(out_pBuffer, in_pBytes, in_numBytes, in_finalState);
});
// statistics gathering
if (m_args.m_timingFrameFileName.size() && (m_args.m_timingStopFrame >= m_args.m_timingStartFrame))
{
m_csvFile = std::make_unique<FrameEventTracing>(m_args.m_timingFrameFileName, adapterDescription);
}
}
Scene::~Scene()
{
WaitForGpu();
if (GetSystemMetrics(SM_REMOTESESSION) == 0)
{
m_swapChain->SetFullscreenState(FALSE, nullptr);
}
::CloseHandle(m_renderFenceEvent);
m_frameConstantBuffer->Unmap(0, nullptr);
delete m_pGpuTimer;
delete m_pGui;
DeleteTerrainViewers();
delete m_pFrustumViewer;
for (auto o : m_objects)
{
delete o;
}
for (auto h : m_sharedHeaps)
{
delete h;
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
RECT Scene::GetGuiRect()
{
RECT r{};
r.right = (LONG)m_pGui->GetWidth();
r.bottom = (LONG)m_pGui->GetHeight();
return r;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void Scene::MoveView(int in_x, int in_y, int in_z)
{
float translationRate = 0.1f * GetFrameTime();
if (0x8000 & GetKeyState(VK_SHIFT))
{
translationRate *= 8;
}
float x = in_x * translationRate;
float y = in_y * translationRate;
float z = in_z * -translationRate;
XMMATRIX translation = XMMatrixTranslation(x, y, z);
m_viewMatrix = XMMatrixMultiply(m_viewMatrix, translation);
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void Scene::RotateView(float in_x, float in_y, float in_z)
{
XMMATRIX rotation;
// NOTE: locking the "up" axis feels great when navigating the terrain
// however, it breaks the controls when flying to other planets
if (m_args.m_cameraUpLock)
{
XMVECTOR yAxis = XMVectorSet(0, 1, 0, 1);
XMMATRIX rotY = XMMatrixRotationAxis(yAxis, in_y);
XMVECTOR xLate = XMVectorSetW(m_viewMatrixInverse.r[3], 0);
rotY = XMMatrixMultiply(XMMatrixTranslationFromVector(-xLate), rotY);
rotY = XMMatrixMultiply(rotY, XMMatrixTranslationFromVector(xLate));
m_viewMatrix = XMMatrixMultiply(rotY, m_viewMatrix);
rotation = XMMatrixRotationRollPitchYaw(in_x, 0, in_z);
}
else
{
rotation = XMMatrixRotationRollPitchYaw(in_x, in_y, in_z);
}
m_viewMatrix = XMMatrixMultiply(m_viewMatrix, rotation);
XMVECTOR pDet;
m_viewMatrixInverse = XMMatrixInverse(&pDet, m_viewMatrix);
}
void Scene::RotateViewKey(int in_x, int in_y, int in_z)
{
float rotationRate = 0.001f * GetFrameTime();
float x = in_x * -rotationRate;
float y = in_y * rotationRate;
float z = in_z * -rotationRate;
RotateView(x, y, z);
}
void Scene::RotateViewPixels(int in_x, int in_y)
{
float xRadians = (sin(m_fieldOfView) / m_viewport.Width) * 2.0f;
float x = float(in_x) * xRadians;
float y = float(in_y) * xRadians;
RotateView(x, y, 0);
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
float Scene::GetFrameTime()
{
return 1000.0f * m_renderThreadTimes.GetAverageTotal();
}
//-----------------------------------------------------------------------------
// common behavior for device removed/reset
//-----------------------------------------------------------------------------
bool Scene::IsDeviceOk(HRESULT in_hr)
{
bool success = true;
if ((DXGI_ERROR_DEVICE_REMOVED == in_hr) || (DXGI_ERROR_DEVICE_RESET == in_hr))
{
//HRESULT hr = m_device->GetDeviceRemovedReason();
m_deviceRemoved = true;
success = false;
}
else
{
ThrowIfFailed(in_hr);
}
return success;
}
//-----------------------------------------------------------------------------
// handle in/out of fullscreen immediately. defer render target size changes
// FIXME: 1st transition to full-screen on multi-gpu, app disappears (?) - hit ESC and try again
// FIXME: full-screen does not choose the nearest display for the associated adapter, it chooses the 1st
//-----------------------------------------------------------------------------
void Scene::Resize()
{
if (m_fullScreen != m_desiredFullScreen)
{
WaitForGpu();
// can't full screen with remote desktop
bool canFullScreen = (GetSystemMetrics(SM_REMOTESESSION) == 0);
if (m_desiredFullScreen)
{
// remember the current placement so we can restore via vk_esc
GetWindowPlacement(m_hwnd, &m_windowPlacement);
// take the first attached monitor
// FIXME? could search for the nearest monitor.
MONITORINFO monitorInfo;
monitorInfo.cbSize = sizeof(monitorInfo);
GetMonitorInfo(MonitorFromWindow(m_hwnd, MONITOR_DEFAULTTONEAREST), &monitorInfo);
ComPtr<IDXGIOutput> dxgiOutput;
HRESULT result = m_adapter->EnumOutputs(0, &dxgiOutput);
if (SUCCEEDED(result))
{
if (canFullScreen)
{
ThrowIfFailed(m_swapChain->SetFullscreenState(true, dxgiOutput.Get()));
}
// FIXME? borderless window would be nice when using remote desktop
}
else // enumerate may fail when multi-gpu and cloning displays
{
canFullScreen = false;
auto width = ::GetSystemMetrics(SM_CXSCREEN);
auto height = ::GetSystemMetrics(SM_CYSCREEN);
SetWindowPos(m_hwnd, NULL, 0, 0, width, height, SWP_NOZORDER | SWP_NOACTIVATE);
}
}
else
{
if (canFullScreen)
{
ThrowIfFailed(m_swapChain->SetFullscreenState(false, nullptr));
}
// when leaving full screen, the previous window state isn't restored by the OS
// however, we saved it earlier...
int left = m_windowPlacement.rcNormalPosition.left;
int top = m_windowPlacement.rcNormalPosition.top;
int width = m_windowPlacement.rcNormalPosition.right - left;
int height = m_windowPlacement.rcNormalPosition.bottom - top;
SetWindowPos(m_hwnd, NULL, left, top, width, height, SWP_SHOWWINDOW);
}
m_fullScreen = m_desiredFullScreen;
}
RECT rect{};
GetClientRect(m_hwnd, &rect);
UINT width = rect.right - rect.left;
UINT height = rect.bottom - rect.top;
// ignore resize events for 0-sized window
// not a fatal error. just ignore it.
if ((0 == height) || (0 == width))
{
return;
}
if ((width != m_windowWidth) || (height != m_windowHeight))
{
m_windowWidth = width;
m_windowHeight = height;
WaitForGpu();
m_viewport = CD3DX12_VIEWPORT(0.0f, 0.0f, static_cast<FLOAT>(width), static_cast<FLOAT>(height));
m_scissorRect = CD3DX12_RECT(0, 0, width, height);
m_aspectRatio = m_viewport.Width / m_viewport.Height;
float nearZ = 1.0f;
float farZ = 100000.0f;
m_projection = DirectX::XMMatrixPerspectiveFovLH(m_fieldOfView, m_aspectRatio, nearZ, farZ);
for (UINT i = 0; i < m_swapBufferCount; i++)
{
m_renderTargets[i] = nullptr;
}
UINT flags = 0;
if (m_windowedSupportsTearing)
{
flags |= DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
}
HRESULT hr = m_swapChain->ResizeBuffers(0, width, height, DXGI_FORMAT_UNKNOWN, flags);
if (IsDeviceOk(hr))
{
// Create a RTV for each frame.
CD3DX12_CPU_DESCRIPTOR_HANDLE rtvHandle(m_rtvHeap->GetCPUDescriptorHandleForHeapStart());
for (UINT i = 0; i < m_swapBufferCount; i++)
{
ThrowIfFailed(m_swapChain->GetBuffer(i, IID_PPV_ARGS(&m_renderTargets[i])));
m_device->CreateRenderTargetView(m_renderTargets[i].Get(), nullptr, rtvHandle);
rtvHandle.Offset(1, m_rtvDescriptorSize);
}
CreateRenderTargets();
m_frameIndex = m_swapChain->GetCurrentBackBufferIndex();
// UI uses window dimensions
m_args.m_windowWidth = width;
m_args.m_windowHeight = height;
}
}
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
void Scene::CreateDescriptorHeaps()
{
// shader resource view (SRV) heap for e.g. textures
D3D12_DESCRIPTOR_HEAP_DESC srvHeapDesc = {};
srvHeapDesc.NumDescriptors = (UINT)DescriptorHeapOffsets::NumEntries +
(m_args.m_maxNumObjects * (UINT)SceneObjects::Descriptors::NumEntries);
srvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
srvHeapDesc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
ThrowIfFailed(m_device->CreateDescriptorHeap(&srvHeapDesc, IID_PPV_ARGS(&m_srvHeap)));
NAME_D3D12_OBJECT(m_srvHeap);
// render target view heap
// NOTE: we have an MSAA target plus a swap chain, so m_swapBufferCount + 1
D3D12_DESCRIPTOR_HEAP_DESC rtvHeapDesc = {};
rtvHeapDesc.NumDescriptors = m_swapBufferCount + 1;
rtvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
ThrowIfFailed(m_device->CreateDescriptorHeap(&rtvHeapDesc, IID_PPV_ARGS(&m_rtvHeap)));
// depth buffer view heap
D3D12_DESCRIPTOR_HEAP_DESC dsvHeapDesc = {};
dsvHeapDesc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_DSV;
dsvHeapDesc.NumDescriptors = 1;
ThrowIfFailed(m_device->CreateDescriptorHeap(&dsvHeapDesc, IID_PPV_ARGS(&m_dsvHeap)));
NAME_D3D12_OBJECT(m_dsvHeap);
}
//-----------------------------------------------------------------------------
// Create synchronization objects and wait until assets have been uploaded to the GPU.
//-----------------------------------------------------------------------------
void Scene::CreateFence()
{
ThrowIfFailed(m_device->CreateFence(
m_renderFenceValue,
D3D12_FENCE_FLAG_NONE,
IID_PPV_ARGS(&m_renderFence)));
// Create an event handle to use for frame synchronization.
m_renderFenceEvent = ::CreateEvent(nullptr, FALSE, FALSE, nullptr);
if (m_renderFenceEvent == nullptr)
{
ThrowIfFailed(HRESULT_FROM_WIN32(GetLastError()));
}
}
//-----------------------------------------------------------------------------
// creates queue, direct command list, and command allocators
//-----------------------------------------------------------------------------
void Scene::CreateCommandQueue()
{
// Describe and create the command queue.
D3D12_COMMAND_QUEUE_DESC queueDesc = {};
queueDesc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
ThrowIfFailed(m_device->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&m_commandQueue)));
m_commandQueue->SetName(L"m_commandQueue");
for (UINT i = 0; i < m_swapBufferCount; i++)
{
ThrowIfFailed(m_device->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&m_commandAllocators[i])));
std::wstringstream cmdAllocName;
cmdAllocName << "m_commandAllocators #" << i;
m_commandAllocators[i]->SetName(cmdAllocName.str().c_str());
}
m_device->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, m_commandAllocators[0].Get(), nullptr, IID_PPV_ARGS(&m_commandList));
m_commandList->SetName(L"m_commandList");
m_commandList->Close();
}
//-----------------------------------------------------------------------------
// note creating the swap chain requires a command queue
// hence, if the command queue changes, we must re-create the swap chain
// command queue can change if we toggle the Intel command queue extension
//-----------------------------------------------------------------------------
void Scene::CreateSwapChain()
{
BOOL allowTearing = FALSE;
const HRESULT result = m_factory->CheckFeatureSupport(DXGI_FEATURE_PRESENT_ALLOW_TEARING, &allowTearing, sizeof(allowTearing));
m_windowedSupportsTearing = SUCCEEDED(result) && allowTearing;
GetWindowInfo(m_hwnd, &m_windowInfo);
// Describe and create the swap chain.
DXGI_SWAP_CHAIN_DESC1 swapChainDesc = {};
swapChainDesc.BufferCount = SharedConstants::SWAP_CHAIN_BUFFER_COUNT;
swapChainDesc.Width = m_windowInfo.rcClient.right - m_windowInfo.rcClient.left;
swapChainDesc.Height = m_windowInfo.rcClient.bottom - m_windowInfo.rcClient.top;
swapChainDesc.Format = SharedConstants::SWAP_CHAIN_FORMAT;
swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
swapChainDesc.SampleDesc.Count = 1;
swapChainDesc.Flags = 0;
if (m_windowedSupportsTearing)
{
swapChainDesc.Flags |= DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
}
DXGI_SWAP_CHAIN_FULLSCREEN_DESC* pFullScreenDesc = nullptr;
// if full screen mode, launch into the current settings
DXGI_SWAP_CHAIN_FULLSCREEN_DESC fullScreenDesc = {};
IDXGIOutput* pOutput = nullptr;
ComPtr<IDXGISwapChain1> swapChain;
ThrowIfFailed(m_factory->CreateSwapChainForHwnd(m_commandQueue.Get(), m_hwnd,
&swapChainDesc, pFullScreenDesc, pOutput, &swapChain));
/*
want full screen with tearing.
from MSDN, DXGI_PRESENT_ALLOW_TEARING:
- The swap chain must be created with the DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING flag.
- It can only be used in windowed mode.
- To use this flag in full screen Win32 apps, the application should present to a fullscreen borderless window
and disable automatic ALT+ENTER fullscreen switching using IDXGIFactory::MakeWindowAssociation.
*/
ThrowIfFailed(m_factory->MakeWindowAssociation(m_hwnd, DXGI_MWA_NO_WINDOW_CHANGES | DXGI_MWA_NO_ALT_ENTER | DXGI_MWA_NO_PRINT_SCREEN));
ThrowIfFailed(swapChain.As(&m_swapChain));
m_frameIndex = m_swapChain->GetCurrentBackBufferIndex();
}
//-----------------------------------------------------------------------------
// Enable the D3D12 debug layer.
//-----------------------------------------------------------------------------
void Scene::InitDebugLayer()
{
OutputDebugString(L"<<< WARNING: DEBUG LAYER ENABLED >>>\n");
{
ID3D12Debug1* pDebugController = nullptr;
if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&pDebugController))))
{
//pDebugController->SetEnableGPUBasedValidation(TRUE);
pDebugController->EnableDebugLayer();
pDebugController->Release();
}
}
}
//-----------------------------------------------------------------------------
// modified next-frame logic to return a handle if a wait is required.
// NOTE: be sure to check for non-null handle before WaitForSingleObjectEx() (or equivalent)
//-----------------------------------------------------------------------------
void Scene::MoveToNextFrame()
{
// Assign the current fence value to the current frame.
m_frameFenceValues[m_frameIndex] = m_renderFenceValue;
// Signal and increment the fence value.
ThrowIfFailed(m_commandQueue->Signal(m_renderFence.Get(), m_renderFenceValue));
m_renderFenceValue++;
// Update the frame index.
m_frameIndex = m_swapChain->GetCurrentBackBufferIndex();
// If the next frame is not ready to be rendered yet, wait until it is ready.
if (m_renderFence->GetCompletedValue() < m_frameFenceValues[m_frameIndex])
{
ThrowIfFailed(m_renderFence->SetEventOnCompletion(m_frameFenceValues[m_frameIndex], m_renderFenceEvent));
WaitForSingleObject(m_renderFenceEvent, INFINITE);
}
}
//-----------------------------------------------------------------------------
// Wait for pending GPU work to complete.
// not interacting with swap chain.
//-----------------------------------------------------------------------------
void Scene::WaitForGpu()
{
// Add a signal command to the queue.
ThrowIfFailed(m_commandQueue->Signal(m_renderFence.Get(), m_renderFenceValue));
// Instruct the fence to set the event object when the signal command completes.
ThrowIfFailed(m_renderFence->SetEventOnCompletion(m_renderFenceValue, m_renderFenceEvent));
m_renderFenceValue++;
// Wait until the signal command has been processed.
WaitForSingleObject(m_renderFenceEvent, INFINITE);
}
//-----------------------------------------------------------------------------
// initialize TileUpdateManager
//-----------------------------------------------------------------------------
void Scene::StartStreamingLibrary()
{
TileUpdateManagerDesc tumDesc;
tumDesc.m_maxNumCopyBatches = m_args.m_numStreamingBatches;
tumDesc.m_maxTileCopiesPerBatch = m_args.m_streamingBatchSize;
tumDesc.m_maxTileCopiesInFlight = m_args.m_maxTilesInFlight;
tumDesc.m_maxTileMappingUpdatesPerApiCall = m_args.m_maxTileUpdatesPerApiCall;
tumDesc.m_swapChainBufferCount = SharedConstants::SWAP_CHAIN_BUFFER_COUNT;
tumDesc.m_useDirectStorage = m_args.m_useDirectStorage;
m_pTileUpdateManager = std::make_unique<TileUpdateManager>(m_device.Get(), m_commandQueue.Get(), tumDesc);
// create 1 or more heaps to contain our StreamingResources
for (UINT i = 0; i < m_args.m_numHeaps; i++)
{
m_sharedHeaps.push_back(m_pTileUpdateManager->CreateStreamingHeap(m_args.m_streamingHeapSize));
}
}
//-----------------------------------------------------------------------------
// generate a random scale, position, and rotation
// also space the spheres so they do not touch
//-----------------------------------------------------------------------------
XMMATRIX Scene::SetSphereMatrix()
{
static std::default_random_engine gen(42);
static std::uniform_real_distribution<float> dis(-1, 1);
const float MIN_SPHERE_SIZE = 1.f;
const float MAX_SPHERE_SIZE = float(SharedConstants::MAX_SPHERE_SCALE);
const float SPHERE_SPACING = float(100 + SharedConstants::MAX_SPHERE_SCALE) / 100.f;
static std::uniform_real_distribution<float> scaleDis(MIN_SPHERE_SIZE, MAX_SPHERE_SIZE);
bool tryAgain = true;
UINT maxTries = 1000;
XMMATRIX matrix = XMMatrixIdentity();
while (tryAgain)
{
if (maxTries)
{
maxTries--;
}
else
{
MessageBox(0, L"Failed to fit planet in universe. Universe too small?", L"ERROR", MB_OK);
exit(-1);
}
float sphereScale = scaleDis(gen) * SharedConstants::SPHERE_SCALE;
float worldScale = SharedConstants::UNIVERSE_SIZE;
float x = worldScale * std::abs(dis(gen));
// position sphere far from terrain
x += (MAX_SPHERE_SIZE + 2) * SharedConstants::SPHERE_SCALE;
float rx = (2*XM_PI) * dis(gen);
float ry = (2*XM_PI) * dis(gen);
float rz = (2*XM_PI) * dis(gen);
XMMATRIX xlate = XMMatrixTranslation(x, 0, 0);
XMMATRIX rtate = XMMatrixRotationRollPitchYaw(rx, ry, rz);
XMMATRIX scale = XMMatrixScaling(sphereScale, sphereScale, sphereScale);
matrix = scale * xlate * rtate;
tryAgain = false;
// spread the spheres out
{
XMVECTOR p0 = matrix.r[3];
float s0 = sphereScale;
for (const auto o : m_objects)
{
if (o == m_pSky)
{
continue;
}
XMVECTOR p1 = o->GetModelMatrix().r[3];
float dist = XMVectorGetX(XMVector3LengthEst(p1 - p0));
float s1 = XMVectorGetX(XMVector3LengthEst(o->GetModelMatrix().r[0]));
// bigger planets are further apart
if (dist < SPHERE_SPACING * (s0 + s1))
{
tryAgain = true;
break;
}
}
}
}
// pre-rotate to randomize axes
float rx = (1.5f * XM_PI) * dis(gen);
float ry = (2.5f * XM_PI) * dis(gen);
float rz = (2.0f * XM_PI) * dis(gen); // rotation around polar axis of sphere model
XMMATRIX rtate = XMMatrixRotationRollPitchYaw(rx, ry, rz);
matrix = rtate * matrix;
return matrix;
}
//-----------------------------------------------------------------------------
// progressively over multiple frames, if there are many
//-----------------------------------------------------------------------------
void Scene::LoadSpheres()
{
if (m_numSpheresLoaded < (UINT)m_args.m_numSpheres)
{
// sphere descriptors start after the terrain descriptor
CD3DX12_CPU_DESCRIPTOR_HANDLE descCPU = CD3DX12_CPU_DESCRIPTOR_HANDLE(m_srvHeap->GetCPUDescriptorHandleForHeapStart(), (UINT)DescriptorHeapOffsets::NumEntries, m_srvUavCbvDescriptorSize);
// offset by all the spheres that have been loaded so far
descCPU.Offset(m_numSpheresLoaded * (UINT)SceneObjects::Descriptors::NumEntries, m_srvUavCbvDescriptorSize);
const UINT numSpheresToLoad = m_args.m_numSpheres - m_numSpheresLoaded;
for (UINT i = 0; i < numSpheresToLoad; i++)
{
// this object's index-to-be
UINT objectIndex = (UINT)m_objects.size();
// put this resource into one of our shared heaps
UINT heapIndex = objectIndex % m_sharedHeaps.size();
auto pHeap = m_sharedHeaps[heapIndex];
// grab the next texture
UINT fileIndex = objectIndex % m_args.m_textures.size();
const auto& textureFilename = m_args.m_textures[fileIndex];
SceneObjects::BaseObject* o = nullptr;
SphereGen::Properties sphereProperties;
sphereProperties.m_numLat = m_args.m_sphereLat;
sphereProperties.m_numLong = m_args.m_sphereLong;
sphereProperties.m_mirrorU = true;
// 3 options: sphere, earth, sky
// sky has to be first because it disables depth when drawn
if ((nullptr == m_pSky) && (m_args.m_skyTexture.size())) // only 1 sky
{
auto tf = m_args.m_mediaDir + L"\\\\" + m_args.m_skyTexture;
m_pSky = new SceneObjects::Sky(tf, m_pTileUpdateManager.get(), pHeap, m_device.Get(), m_args.m_sampleCount, descCPU);
o = m_pSky;
}
else if (nullptr == m_pTerrainSceneObject)
{
m_pTerrainSceneObject = new SceneObjects::Terrain(m_args.m_textureFilename, m_pTileUpdateManager.get(), pHeap, m_device.Get(), m_args.m_sampleCount, descCPU, m_args);
m_terrainObjectIndex = objectIndex;
o = m_pTerrainSceneObject;
}
// earth
else if (m_args.m_earthTexture.size() && (std::wstring::npos != textureFilename.find(m_args.m_earthTexture)))
{
if (nullptr == m_pEarth)
{
sphereProperties.m_mirrorU = false;
o = new SceneObjects::Planet(textureFilename, m_pTileUpdateManager.get(), pHeap, m_device.Get(), m_args.m_sampleCount, descCPU, sphereProperties);
m_pEarth = o;
}
else
{
o = new SceneObjects::Planet(textureFilename, m_pTileUpdateManager.get(), pHeap, m_device.Get(), descCPU, m_pEarth);
}
o->GetModelMatrix() = SetSphereMatrix();
}
// planet
else
{
if (nullptr == m_pFirstSphere)
{
sphereProperties.m_mirrorU = true;
o = new SceneObjects::Planet(textureFilename, m_pTileUpdateManager.get(), pHeap, m_device.Get(), m_args.m_sampleCount, descCPU, sphereProperties);
m_pFirstSphere = o;
}
else
{
o = new SceneObjects::Planet(textureFilename, m_pTileUpdateManager.get(), pHeap, m_device.Get(), descCPU, m_pFirstSphere);
}
o->GetModelMatrix() = SetSphereMatrix();
}
m_objects.push_back(o);
m_numSpheresLoaded++;
// offset to the next sphere
descCPU.Offset((UINT)SceneObjects::Descriptors::NumEntries, m_srvUavCbvDescriptorSize);
}
}
// evict spheres?
else if (m_numSpheresLoaded > (UINT)m_args.m_numSpheres)
{
WaitForGpu();
while (m_numSpheresLoaded > (UINT)m_args.m_numSpheres)
{
auto i = m_objects.end();
i--;
SceneObjects::BaseObject* pObject = *i;
delete pObject;
m_objects.erase(i);
if (m_pTerrainSceneObject == pObject)
{
DeleteTerrainViewers();
m_pTerrainSceneObject = nullptr;
}
if (m_pFirstSphere == pObject)
{
m_pFirstSphere = nullptr;
}
if (m_pEarth == pObject)
{
m_pEarth = nullptr;
}
if (m_pSky == pObject)
{
m_pSky = nullptr;
}
m_numSpheresLoaded--;
}
}
}
//-----------------------------------------------------------------------------
// create MSAA color and depth targets
//-----------------------------------------------------------------------------
void Scene::CreateRenderTargets()
{
D3D12_DEPTH_STENCIL_VIEW_DESC dsv = {};
D3D12_RESOURCE_DESC desc = CD3DX12_RESOURCE_DESC::Tex2D(
SharedConstants::SWAP_CHAIN_FORMAT,
(UINT64)m_viewport.Width, (UINT)m_viewport.Height,
1, 1, m_args.m_sampleCount);
// create color buffer
{
D3D12_RESOURCE_DESC colorDesc = desc;
colorDesc.Flags = D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
D3D12_CLEAR_VALUE clearValue = {};
memcpy(&clearValue.Color, &m_clearColor, sizeof(m_clearColor));
clearValue.Format = desc.Format;
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
ThrowIfFailed(m_device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&colorDesc,
D3D12_RESOURCE_STATE_RENDER_TARGET,
&clearValue,
IID_PPV_ARGS(&m_colorBuffer)));
}
// create depth buffer
{
D3D12_RESOURCE_DESC depthDesc = desc;
depthDesc.Format = SharedConstants::DEPTH_FORMAT;
depthDesc.Flags = D3D12_RESOURCE_FLAG_ALLOW_DEPTH_STENCIL;
D3D12_CLEAR_VALUE clearValue = {};
clearValue.DepthStencil.Depth = 1.0f;
clearValue.Format = SharedConstants::DEPTH_FORMAT;
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_DEFAULT);
ThrowIfFailed(m_device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&depthDesc,
D3D12_RESOURCE_STATE_DEPTH_WRITE,
&clearValue,
IID_PPV_ARGS(&m_depthBuffer)));
dsv.Format = depthDesc.Format;
}
if (1 == m_args.m_sampleCount)
{
dsv.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2D;
}
else
{
dsv.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2DMS;
}
CD3DX12_CPU_DESCRIPTOR_HANDLE rtvDescriptor(m_rtvHeap->GetCPUDescriptorHandleForHeapStart(), m_swapBufferCount, m_rtvDescriptorSize);
CD3DX12_CPU_DESCRIPTOR_HANDLE dsvDescriptor(m_dsvHeap->GetCPUDescriptorHandleForHeapStart());
m_device->CreateRenderTargetView(m_colorBuffer.Get(), nullptr, rtvDescriptor);
m_device->CreateDepthStencilView(m_depthBuffer.Get(), &dsv, dsvDescriptor);
}
//-----------------------------------------------------------------------------
// 1 static and 1 dynamic constant buffers
// NOTE: do this within LoadAssets, as it will create a staging resource and rely on command list submission
//-----------------------------------------------------------------------------
void Scene::CreateConstantBuffers()
{
// dynamic constant buffer
{
UINT bufferSize = sizeof(FrameConstantData);
const UINT multipleSize = 256; // required
bufferSize = (bufferSize + multipleSize - 1) / multipleSize;
bufferSize *= multipleSize;
const auto heapProperties = CD3DX12_HEAP_PROPERTIES(D3D12_HEAP_TYPE_UPLOAD);
const auto resourceDesc = CD3DX12_RESOURCE_DESC::Buffer(bufferSize);
ThrowIfFailed(m_device->CreateCommittedResource(
&heapProperties,
D3D12_HEAP_FLAG_NONE,
&resourceDesc,
D3D12_RESOURCE_STATE_GENERIC_READ,
nullptr,
IID_PPV_ARGS(&m_frameConstantBuffer)));
CD3DX12_RANGE readRange(0, bufferSize);
ThrowIfFailed(m_frameConstantBuffer->Map(0, &readRange, reinterpret_cast<void**>(&m_pFrameConstantData)));
m_pFrameConstantData->g_lightDir = XMFLOAT4(-0.538732767f, 0.787301660f, 0.299871892f, 0);
XMStoreFloat4(&m_pFrameConstantData->g_lightDir, XMVector4Normalize(XMLoadFloat4(&m_pFrameConstantData->g_lightDir)));
m_pFrameConstantData->g_lightColor = XMFLOAT4(1, 1, 1, 40.0f);
m_pFrameConstantData->g_specColor = XMFLOAT4(1, 1, 1, 1);
D3D12_CONSTANT_BUFFER_VIEW_DESC constantBufferView = {};
constantBufferView.SizeInBytes = bufferSize;
constantBufferView.BufferLocation = m_frameConstantBuffer->GetGPUVirtualAddress();
m_device->CreateConstantBufferView(&constantBufferView, CD3DX12_CPU_DESCRIPTOR_HANDLE(
m_srvHeap->GetCPUDescriptorHandleForHeapStart(), (UINT)DescriptorHeapOffsets::FRAME_CBV, m_srvUavCbvDescriptorSize));
}
}