mirror of
https://github.com/crystalidea/qt6windows7.git
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111 lines
3.9 KiB
C++
111 lines
3.9 KiB
C++
// Copyright (C) 2023 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QGuiApplication>
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#include <QCommandLineParser>
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#include "rhiwindow.h"
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int main(int argc, char **argv)
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{
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QGuiApplication app(argc, argv);
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QRhi::Implementation graphicsApi;
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// Use platform-specific defaults when no command-line arguments given.
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#if defined(Q_OS_WIN)
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graphicsApi = QRhi::D3D11;
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#elif defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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graphicsApi = QRhi::Metal;
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#elif QT_CONFIG(vulkan)
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graphicsApi = QRhi::Vulkan;
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#else
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graphicsApi = QRhi::OpenGLES2;
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#endif
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QCommandLineParser cmdLineParser;
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cmdLineParser.addHelpOption();
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QCommandLineOption nullOption({ "n", "null" }, QLatin1String("Null"));
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cmdLineParser.addOption(nullOption);
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QCommandLineOption glOption({ "g", "opengl" }, QLatin1String("OpenGL"));
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cmdLineParser.addOption(glOption);
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QCommandLineOption vkOption({ "v", "vulkan" }, QLatin1String("Vulkan"));
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cmdLineParser.addOption(vkOption);
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QCommandLineOption d3d11Option({ "d", "d3d11" }, QLatin1String("Direct3D 11"));
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cmdLineParser.addOption(d3d11Option);
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QCommandLineOption d3d12Option({ "D", "d3d12" }, QLatin1String("Direct3D 12"));
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cmdLineParser.addOption(d3d12Option);
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QCommandLineOption mtlOption({ "m", "metal" }, QLatin1String("Metal"));
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cmdLineParser.addOption(mtlOption);
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cmdLineParser.process(app);
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if (cmdLineParser.isSet(nullOption))
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graphicsApi = QRhi::Null;
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if (cmdLineParser.isSet(glOption))
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graphicsApi = QRhi::OpenGLES2;
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if (cmdLineParser.isSet(vkOption))
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graphicsApi = QRhi::Vulkan;
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if (cmdLineParser.isSet(d3d11Option))
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graphicsApi = QRhi::D3D11;
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if (cmdLineParser.isSet(d3d12Option))
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graphicsApi = QRhi::D3D12;
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if (cmdLineParser.isSet(mtlOption))
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graphicsApi = QRhi::Metal;
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//! [api-setup]
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// For OpenGL, to ensure there is a depth/stencil buffer for the window.
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// With other APIs this is under the application's control (QRhiRenderBuffer etc.)
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// and so no special setup is needed for those.
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QSurfaceFormat fmt;
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fmt.setDepthBufferSize(24);
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fmt.setStencilBufferSize(8);
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// Special case macOS to allow using OpenGL there.
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// (the default Metal is the recommended approach, though)
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// gl_VertexID is a GLSL 130 feature, and so the default OpenGL 2.1 context
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// we get on macOS is not sufficient.
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#ifdef Q_OS_MACOS
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fmt.setVersion(4, 1);
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fmt.setProfile(QSurfaceFormat::CoreProfile);
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#endif
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QSurfaceFormat::setDefaultFormat(fmt);
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// For Vulkan.
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#if QT_CONFIG(vulkan)
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QVulkanInstance inst;
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if (graphicsApi == QRhi::Vulkan) {
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// Request validation, if available. This is completely optional
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// and has a performance impact, and should be avoided in production use.
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inst.setLayers({ "VK_LAYER_KHRONOS_validation" });
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// Play nice with QRhi.
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inst.setExtensions(QRhiVulkanInitParams::preferredInstanceExtensions());
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if (!inst.create()) {
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qWarning("Failed to create Vulkan instance, switching to OpenGL");
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graphicsApi = QRhi::OpenGLES2;
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}
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}
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#endif
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//! [api-setup]
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HelloWindow window(graphicsApi);
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#if QT_CONFIG(vulkan)
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if (graphicsApi == QRhi::Vulkan)
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window.setVulkanInstance(&inst);
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#endif
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window.resize(1280, 720);
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window.setTitle(QCoreApplication::applicationName() + QLatin1String(" - ") + window.graphicsApiName());
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window.show();
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int ret = app.exec();
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// RhiWindow::event() will not get invoked when the
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// PlatformSurfaceAboutToBeDestroyed event is sent during the QWindow
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// destruction. That happens only when exiting via app::quit() instead of
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// the more common QWindow::close(). Take care of it: if the QPlatformWindow
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// is still around (there was no close() yet), get rid of the swapchain
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// while it's not too late.
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if (window.handle())
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window.releaseSwapChain();
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return ret;
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}
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