372 lines
11 KiB
C++
372 lines
11 KiB
C++
#include "D3D12WindowSwapChainPresenter.h"
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#include <sstream>
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namespace XCEngine::UI::Editor::Host {
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using ::XCEngine::RHI::D3D12SwapChain;
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using ::XCEngine::RHI::D3D12Texture;
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using ::XCEngine::RHI::Format;
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using ::XCEngine::RHI::ResourceStates;
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using ::XCEngine::RHI::ResourceViewDesc;
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using ::XCEngine::RHI::ResourceViewDimension;
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using ::XCEngine::RHI::RHISwapChain;
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using ::XCEngine::RHI::SwapChainDesc;
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bool D3D12WindowSwapChainPresenter::Initialize(
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D3D12HostDevice& hostDevice,
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HWND hwnd,
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int width,
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int height) {
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Shutdown();
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if (hwnd == nullptr || width <= 0 || height <= 0) {
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m_lastError = "Initialize rejected an invalid hwnd or size.";
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return false;
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}
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if (hostDevice.GetRHIDevice() == nullptr || hostDevice.GetRHICommandQueue() == nullptr) {
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m_lastError = "Initialize requires an initialized host D3D12 device.";
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return false;
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}
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m_hwnd = hwnd;
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m_width = width;
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m_height = height;
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m_hostDevice = &hostDevice;
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if (!CreateSwapChain(width, height)) {
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Shutdown();
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return false;
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}
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m_lastError.clear();
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return true;
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}
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bool D3D12WindowSwapChainPresenter::CreateSwapChain(int width, int height) {
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if (m_hostDevice == nullptr || m_hostDevice->GetRHIDevice() == nullptr || m_hostDevice->GetRHICommandQueue() == nullptr) {
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m_lastError = "CreateSwapChain requires an initialized host D3D12 device.";
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return false;
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}
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SwapChainDesc swapChainDesc = {};
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swapChainDesc.windowHandle = m_hwnd;
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swapChainDesc.width = static_cast<std::uint32_t>(width);
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swapChainDesc.height = static_cast<std::uint32_t>(height);
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swapChainDesc.bufferCount = kSwapChainBufferCount;
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m_swapChain = m_hostDevice->GetRHIDevice()->CreateSwapChain(
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swapChainDesc,
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m_hostDevice->GetRHICommandQueue());
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if (m_swapChain == nullptr || GetD3D12SwapChain() == nullptr) {
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m_lastError = "Failed to create the D3D12 swap chain.";
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return false;
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}
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if (!RecreateBackBufferViews()) {
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m_lastError = "Failed to create swap chain back buffer views.";
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return false;
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}
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m_width = width;
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m_height = height;
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return true;
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}
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void D3D12WindowSwapChainPresenter::DestroySwapChain() {
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ReleaseBackBufferViews();
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if (m_swapChain != nullptr) {
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m_swapChain->Shutdown();
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delete m_swapChain;
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m_swapChain = nullptr;
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}
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}
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bool D3D12WindowSwapChainPresenter::RecreateSwapChain(int width, int height) {
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DestroySwapChain();
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m_hostDevice->ResetFrameTracking();
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return CreateSwapChain(width, height);
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}
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void D3D12WindowSwapChainPresenter::Shutdown() {
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if (m_hostDevice != nullptr) {
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m_hostDevice->WaitForGpuIdle();
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}
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DestroySwapChain();
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m_hwnd = nullptr;
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m_width = 0;
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m_height = 0;
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m_hostDevice = nullptr;
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m_lastError.clear();
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}
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bool D3D12WindowSwapChainPresenter::Resize(int width, int height) {
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if (width <= 0 || height <= 0 || m_swapChain == nullptr || m_hostDevice == nullptr) {
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return false;
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}
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if (m_width == width && m_height == height) {
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m_lastError.clear();
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return true;
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}
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m_hostDevice->WaitForGpuIdle();
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ReleaseBackBufferCommandReferences();
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ReleaseBackBufferViews();
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D3D12SwapChain* d3d12SwapChain = GetD3D12SwapChain();
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if (d3d12SwapChain == nullptr) {
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m_lastError = "Resize could not resolve the native D3D12 swap chain.";
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return false;
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}
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d3d12SwapChain->Resize(
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static_cast<std::uint32_t>(width),
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static_cast<std::uint32_t>(height));
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const HRESULT resizeHr = d3d12SwapChain->GetLastResizeResult();
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if (FAILED(resizeHr)) {
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if (RecreateSwapChain(width, height)) {
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m_lastError.clear();
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return true;
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}
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std::ostringstream error = {};
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error << "ResizeBuffers failed. requested="
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<< width
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<< 'x'
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<< height
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<< " hr=0x"
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<< std::uppercase
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<< std::hex
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<< static_cast<unsigned long>(resizeHr);
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m_lastError = error.str();
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return false;
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}
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const D3D12Texture* backBufferTexture = GetBackBufferTexture(0u);
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if (backBufferTexture == nullptr) {
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if (RecreateSwapChain(width, height)) {
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m_lastError.clear();
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return true;
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}
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m_lastError = "Resize failed to restore swap chain back buffers after ResizeBuffers.";
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return false;
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}
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m_width = static_cast<int>(backBufferTexture->GetWidth());
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m_height = static_cast<int>(backBufferTexture->GetHeight());
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m_hostDevice->ResetFrameTracking();
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if (!RecreateBackBufferViews()) {
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if (RecreateSwapChain(width, height)) {
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m_lastError.clear();
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return true;
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}
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m_lastError = "Resize failed to recreate swap chain back buffer views.";
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return false;
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}
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if (m_width != width || m_height != height) {
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if (RecreateSwapChain(width, height)) {
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m_lastError.clear();
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return true;
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}
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std::ostringstream error = {};
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error << "Resize ended with an unexpected swap chain size. requested="
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<< width
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<< 'x'
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<< height
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<< " actual="
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<< m_width
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<< 'x'
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<< m_height;
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m_lastError = error.str();
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return false;
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}
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m_lastError.clear();
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return true;
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}
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bool D3D12WindowSwapChainPresenter::PreparePresentSurface(
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const ::XCEngine::Rendering::RenderContext& renderContext) {
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if (!renderContext.IsValid() || renderContext.commandList == nullptr) {
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m_lastError = "PreparePresentSurface requires a valid render context.";
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return false;
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}
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if (m_swapChain == nullptr) {
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m_lastError = "PreparePresentSurface requires an initialized swap chain.";
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return false;
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}
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const std::uint32_t backBufferIndex = m_swapChain->GetCurrentBackBufferIndex();
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if (backBufferIndex >= m_backBufferViews.size() ||
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m_backBufferViews[backBufferIndex] == nullptr) {
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std::ostringstream error = {};
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error << "PreparePresentSurface could not find the current swap chain RTV. index="
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<< backBufferIndex
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<< " rtvCount="
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<< m_backBufferViews.size();
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m_lastError = error.str();
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return false;
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}
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renderContext.commandList->TransitionBarrier(
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m_backBufferViews[backBufferIndex],
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::XCEngine::RHI::ResourceStates::Present,
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::XCEngine::RHI::ResourceStates::RenderTarget);
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m_lastError.clear();
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return true;
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}
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bool D3D12WindowSwapChainPresenter::PresentFrame() {
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if (m_swapChain == nullptr) {
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m_lastError = "PresentFrame requires an initialized swap chain.";
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return false;
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}
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// Editor shell presentation prioritizes interaction latency over display sync.
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// Blocking on every vblank makes host-window resize feel sticky even when the
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// UI tree itself is cheap to rebuild.
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m_swapChain->Present(0, 0);
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m_lastError.clear();
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return true;
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}
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const std::string& D3D12WindowSwapChainPresenter::GetLastError() const {
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return m_lastError;
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}
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RHISwapChain* D3D12WindowSwapChainPresenter::GetSwapChain() const {
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return m_swapChain;
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}
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const ::XCEngine::Rendering::RenderSurface*
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D3D12WindowSwapChainPresenter::GetCurrentRenderSurface() const {
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if (m_swapChain == nullptr) {
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return nullptr;
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}
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const std::uint32_t backBufferIndex = m_swapChain->GetCurrentBackBufferIndex();
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if (backBufferIndex >= m_backBufferSurfaces.size()) {
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return nullptr;
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}
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return &m_backBufferSurfaces[backBufferIndex];
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}
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const D3D12Texture* D3D12WindowSwapChainPresenter::GetCurrentBackBufferTexture() const {
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if (m_swapChain == nullptr) {
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return nullptr;
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}
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return GetBackBufferTexture(m_swapChain->GetCurrentBackBufferIndex());
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}
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const D3D12Texture* D3D12WindowSwapChainPresenter::GetBackBufferTexture(std::uint32_t index) const {
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const D3D12SwapChain* d3d12SwapChain = GetD3D12SwapChain();
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if (d3d12SwapChain == nullptr) {
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return nullptr;
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}
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return d3d12SwapChain->TryGetBackBuffer(index);
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}
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std::uint32_t D3D12WindowSwapChainPresenter::GetBackBufferCount() const {
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return kSwapChainBufferCount;
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}
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std::uint32_t D3D12WindowSwapChainPresenter::GetCurrentBackBufferIndex() const {
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return m_swapChain != nullptr ? m_swapChain->GetCurrentBackBufferIndex() : 0u;
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}
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D3D12SwapChain* D3D12WindowSwapChainPresenter::GetD3D12SwapChain() const {
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return m_swapChain != nullptr ? static_cast<D3D12SwapChain*>(m_swapChain) : nullptr;
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}
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void D3D12WindowSwapChainPresenter::ReleaseBackBufferCommandReferences() {
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if (m_hostDevice == nullptr) {
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return;
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}
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for (std::uint32_t frameIndex = 0u;
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frameIndex < D3D12HostDevice::kFrameContextCount;
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++frameIndex) {
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auto* commandList = m_hostDevice->GetCommandList(frameIndex);
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if (commandList == nullptr) {
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continue;
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}
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commandList->Reset();
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commandList->Close();
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}
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}
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void D3D12WindowSwapChainPresenter::ReleaseBackBufferViews() {
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for (auto* view : m_backBufferViews) {
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if (view != nullptr) {
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view->Shutdown();
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delete view;
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}
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}
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m_backBufferViews.clear();
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m_backBufferSurfaces.clear();
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}
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bool D3D12WindowSwapChainPresenter::RecreateBackBufferViews() {
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D3D12SwapChain* d3d12SwapChain = GetD3D12SwapChain();
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if (m_hostDevice == nullptr || m_hostDevice->GetRHIDevice() == nullptr || d3d12SwapChain == nullptr) {
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return false;
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}
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m_backBufferViews.resize(kSwapChainBufferCount, nullptr);
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m_backBufferSurfaces.resize(kSwapChainBufferCount);
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ResourceViewDesc viewDesc = {};
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viewDesc.format = static_cast<std::uint32_t>(Format::R8G8B8A8_UNorm);
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viewDesc.dimension = ResourceViewDimension::Texture2D;
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for (std::uint32_t backBufferIndex = 0u;
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backBufferIndex < kSwapChainBufferCount;
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++backBufferIndex) {
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D3D12Texture* backBufferTexture = d3d12SwapChain->TryGetBackBuffer(backBufferIndex);
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if (backBufferTexture == nullptr) {
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ReleaseBackBufferViews();
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m_lastError = "RecreateBackBufferViews could not resolve swap chain back buffer " +
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std::to_string(backBufferIndex) + ".";
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return false;
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}
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m_backBufferViews[backBufferIndex] = m_hostDevice->GetRHIDevice()->CreateRenderTargetView(
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backBufferTexture,
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viewDesc);
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if (m_backBufferViews[backBufferIndex] == nullptr) {
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ReleaseBackBufferViews();
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m_lastError = "RecreateBackBufferViews failed to create RTV for swap chain back buffer " +
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std::to_string(backBufferIndex) + ".";
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return false;
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}
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::XCEngine::Rendering::RenderSurface& surface = m_backBufferSurfaces[backBufferIndex];
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surface = ::XCEngine::Rendering::RenderSurface(
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static_cast<std::uint32_t>(m_width),
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static_cast<std::uint32_t>(m_height));
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surface.SetColorAttachment(m_backBufferViews[backBufferIndex]);
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surface.SetAutoTransitionEnabled(false);
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surface.SetColorStateBefore(ResourceStates::RenderTarget);
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surface.SetColorStateAfter(ResourceStates::RenderTarget);
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}
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m_lastError.clear();
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return true;
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}
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} // namespace XCEngine::UI::Editor::Host
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