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Qt: Work around flip model swap chains being limited to vsync when parented

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Fixes fast forward not working on some systems.
pull/285/head
Connor McLaughlin 6 years ago
parent 1f40d5f77d
commit 0a004361fc
5 changed files with 55 additions and 25 deletions
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48
src/duckstation-qt/d3d11displaywidget.cpp
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@ -231,7 +231,7 @@ bool D3D11DisplayWidget::createDeviceContext(QThread* worker_thread, bool debug_
m_allow_tearing_supported = (allow_tearing_supported == TRUE);
}
if (!createSwapChain(reinterpret_cast<HWND>(winId())))
if (!createSwapChain())
return false;
if (!QtDisplayWidget::createDeviceContext(worker_thread, debug_device))
@ -263,9 +263,16 @@ void D3D11DisplayWidget::destroyDeviceContext()
m_device.Reset();
}
bool D3D11DisplayWidget::createSwapChain(HWND hwnd)
bool D3D11DisplayWidget::shouldUseFlipModelSwapChain() const
{
HRESULT hr;
// For some reason DXGI gets stuck waiting for some kernel object when the Qt window has a parent (render-to-main) on
// some computers, unless the window is completely occluded. The legacy swap chain mode does not have this problem.
return parent() == nullptr;
}
bool D3D11DisplayWidget::createSwapChain()
{
m_using_flip_model_swap_chain = shouldUseFlipModelSwapChain();
DXGI_SWAP_CHAIN_DESC swap_chain_desc = {};
swap_chain_desc.BufferDesc.Width = m_window_width;
@ -274,20 +281,22 @@ bool D3D11DisplayWidget::createSwapChain(HWND hwnd)
swap_chain_desc.SampleDesc.Count = 1;
swap_chain_desc.BufferCount = 3;
swap_chain_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swap_chain_desc.OutputWindow = hwnd;
swap_chain_desc.OutputWindow = reinterpret_cast<HWND>(winId());
swap_chain_desc.Windowed = TRUE;
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
swap_chain_desc.SwapEffect = m_using_flip_model_swap_chain ? DXGI_SWAP_EFFECT_FLIP_DISCARD : DXGI_SWAP_EFFECT_DISCARD;
if (m_allow_tearing_supported)
m_using_allow_tearing = (m_allow_tearing_supported && m_using_flip_model_swap_chain);
if (m_using_allow_tearing)
swap_chain_desc.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
hr = m_dxgi_factory->CreateSwapChain(m_device.Get(), &swap_chain_desc, m_swap_chain.GetAddressOf());
if (FAILED(hr))
HRESULT hr = m_dxgi_factory->CreateSwapChain(m_device.Get(), &swap_chain_desc, m_swap_chain.GetAddressOf());
if (FAILED(hr) && m_using_flip_model_swap_chain)
{
Log_WarningPrintf("Failed to create a flip-discard swap chain, trying discard.");
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
swap_chain_desc.Flags = 0;
m_allow_tearing_supported = false;
m_using_flip_model_swap_chain = false;
m_using_allow_tearing = false;
hr = m_dxgi_factory->CreateSwapChain(m_device.Get(), &swap_chain_desc, m_swap_chain.GetAddressOf());
if (FAILED(hr))
@ -297,13 +306,22 @@ bool D3D11DisplayWidget::createSwapChain(HWND hwnd)
}
}
hr = m_dxgi_factory->MakeWindowAssociation(hwnd, DXGI_MWA_NO_WINDOW_CHANGES);
hr = m_dxgi_factory->MakeWindowAssociation(swap_chain_desc.OutputWindow, DXGI_MWA_NO_WINDOW_CHANGES);
if (FAILED(hr))
Log_WarningPrintf("MakeWindowAssociation() to disable ALT+ENTER failed");
return true;
}
void D3D11DisplayWidget::recreateSwapChain()
{
m_swap_chain_rtv.Reset();
m_swap_chain.Reset();
if (!createSwapChain() || !createSwapChainRTV())
Panic("Failed to recreate swap chain");
}
void D3D11DisplayWidget::windowResized(s32 new_window_width, s32 new_window_height)
{
QtDisplayWidget::windowResized(new_window_width, new_window_height);
@ -312,10 +330,16 @@ void D3D11DisplayWidget::windowResized(s32 new_window_width, s32 new_window_heig
if (!m_swap_chain)
return;
if (m_using_flip_model_swap_chain != shouldUseFlipModelSwapChain())
{
recreateSwapChain();
return;
}
m_swap_chain_rtv.Reset();
HRESULT hr = m_swap_chain->ResizeBuffers(0, new_window_width, new_window_height, DXGI_FORMAT_UNKNOWN,
m_allow_tearing_supported ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0);
m_using_allow_tearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0);
if (FAILED(hr))
Log_ErrorPrintf("ResizeBuffers() failed: 0x%08X", hr);
@ -439,7 +463,7 @@ void D3D11DisplayWidget::Render()
ImGui::Render();
ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
if (!m_vsync && m_allow_tearing_supported)
if (!m_vsync && m_using_allow_tearing)
m_swap_chain->Present(0, DXGI_PRESENT_ALLOW_TEARING);
else
m_swap_chain->Present(BoolToUInt32(m_vsync), 0);

6
src/duckstation-qt/d3d11displaywidget.h
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@ -55,8 +55,10 @@ private:
bool createDeviceResources() override;
void destroyDeviceResources() override;
bool createSwapChain(HWND hwnd);
bool shouldUseFlipModelSwapChain() const;
bool createSwapChain();
bool createSwapChainRTV();
void recreateSwapChain();
void renderDisplay();
@ -80,5 +82,7 @@ private:
D3D11::AutoStagingTexture m_readback_staging_texture;
bool m_allow_tearing_supported = false;
bool m_using_flip_model_swap_chain = false;
bool m_using_allow_tearing = false;
bool m_vsync = false;
};

1
src/duckstation-qt/mainwindow.cpp
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@ -153,6 +153,7 @@ void MainWindow::updateDisplayWindow(bool fullscreen, bool render_to_main)
m_display_widget->setCursor(QCursor());
}
m_display_widget->windowResizedEvent(m_display_widget->scaledWindowWidth(), m_display_widget->scaledWindowHeight());
m_display_widget->setFocus();
QSignalBlocker blocker(m_ui.actionFullscreen);

18
src/duckstation-qt/qtdisplaywidget.cpp
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@ -51,7 +51,7 @@ void QtDisplayWidget::destroyDeviceContext()
destroyDeviceResources();
}
qreal QtDisplayWidget::getDevicePixelRatioFromScreen() const
qreal QtDisplayWidget::devicePixelRatioFromScreen() const
{
QScreen* screen_for_ratio;
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
@ -65,14 +65,14 @@ qreal QtDisplayWidget::getDevicePixelRatioFromScreen() const
return screen_for_ratio ? screen_for_ratio->devicePixelRatio() : static_cast<qreal>(1);
}
int QtDisplayWidget::getScaledWindowWidth() const
int QtDisplayWidget::scaledWindowWidth() const
{
return static_cast<int>(std::ceil(static_cast<qreal>(width()) * getDevicePixelRatioFromScreen()));
return static_cast<int>(std::ceil(static_cast<qreal>(width()) * devicePixelRatioFromScreen()));
}
int QtDisplayWidget::getScaledWindowHeight() const
int QtDisplayWidget::scaledWindowHeight() const
{
return static_cast<int>(std::ceil(static_cast<qreal>(height()) * getDevicePixelRatioFromScreen()));
return static_cast<int>(std::ceil(static_cast<qreal>(height()) * devicePixelRatioFromScreen()));
}
bool QtDisplayWidget::createImGuiContext()
@ -81,10 +81,10 @@ bool QtDisplayWidget::createImGuiContext()
auto& io = ImGui::GetIO();
io.IniFilename = nullptr;
io.DisplaySize.x = static_cast<float>(getScaledWindowWidth());
io.DisplaySize.y = static_cast<float>(getScaledWindowHeight());
io.DisplaySize.x = static_cast<float>(scaledWindowWidth());
io.DisplaySize.y = static_cast<float>(scaledWindowHeight());
const float framebuffer_scale = static_cast<float>(getDevicePixelRatioFromScreen());
const float framebuffer_scale = static_cast<float>(devicePixelRatioFromScreen());
io.DisplayFramebufferScale.x = framebuffer_scale;
io.DisplayFramebufferScale.y = framebuffer_scale;
ImGui::GetStyle().ScaleAllSizes(framebuffer_scale);
@ -141,7 +141,7 @@ bool QtDisplayWidget::event(QEvent* event)
{
QWidget::event(event);
emit windowResizedEvent(getScaledWindowWidth(), getScaledWindowHeight());
emit windowResizedEvent(scaledWindowWidth(), scaledWindowHeight());
return true;
}

7
src/duckstation-qt/qtdisplaywidget.h
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@ -29,14 +29,15 @@ public:
virtual QPaintEngine* paintEngine() const override;
int scaledWindowWidth() const;
int scaledWindowHeight() const;
Q_SIGNALS:
void windowResizedEvent(int width, int height);
void windowRestoredEvent();
protected:
qreal getDevicePixelRatioFromScreen() const;
int getScaledWindowWidth() const;
int getScaledWindowHeight() const;
qreal devicePixelRatioFromScreen() const;
virtual bool createImGuiContext();
virtual void destroyImGuiContext();

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