f3c37c839c
While we are at it, remove the Border and MirrorOnce wrap modes that have not been supported on OpenGL, because they are unsupported with Metal+iOS as well. Task-number: QTBUG-78580 Change-Id: I0db94b9d3a6125b3bb5d7b1db5d02a42cd94d2c2 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
584 lines
18 KiB
C++
584 lines
18 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2018 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// Adapted from hellominimalcrossgfxtriangle with the frame rendering stripped out.
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// Include this file and implement Window::customInit, release and render.
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// Debug/validation layer is enabled for D3D and Vulkan.
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#include <QGuiApplication>
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#include <QCommandLineParser>
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#include <QWindow>
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#include <QPlatformSurfaceEvent>
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#include <QElapsedTimer>
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#include <QTimer>
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#include <QLoggingCategory>
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#include <QtGui/private/qshader_p.h>
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#include <QFile>
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#include <QtGui/private/qrhiprofiler_p.h>
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#include <QtGui/private/qrhinull_p.h>
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#ifndef QT_NO_OPENGL
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#include <QtGui/private/qrhigles2_p.h>
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#include <QOffscreenSurface>
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#endif
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#if QT_CONFIG(vulkan)
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#include <QtGui/private/qrhivulkan_p.h>
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#endif
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#ifdef Q_OS_WIN
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#include <QtGui/private/qrhid3d11_p.h>
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#endif
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#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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#include <QtGui/private/qrhimetal_p.h>
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#endif
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QShader getShader(const QString &name)
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{
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QFile f(name);
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if (f.open(QIODevice::ReadOnly))
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return QShader::fromSerialized(f.readAll());
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return QShader();
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}
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enum GraphicsApi
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{
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Null,
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OpenGL,
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Vulkan,
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D3D11,
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Metal
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};
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GraphicsApi graphicsApi;
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QString graphicsApiName()
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{
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switch (graphicsApi) {
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case Null:
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return QLatin1String("Null (no output)");
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case OpenGL:
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return QLatin1String("OpenGL 2.x");
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case Vulkan:
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return QLatin1String("Vulkan");
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case D3D11:
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return QLatin1String("Direct3D 11");
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case Metal:
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return QLatin1String("Metal");
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default:
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break;
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}
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return QString();
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}
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QRhi::Flags rhiFlags = QRhi::EnableDebugMarkers;
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int sampleCount = 1;
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QRhiSwapChain::Flags scFlags;
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QRhi::BeginFrameFlags beginFrameFlags;
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QRhi::EndFrameFlags endFrameFlags;
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int framesUntilTdr = -1;
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bool transparentBackground = false;
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class Window : public QWindow
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{
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public:
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Window();
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~Window();
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protected:
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void init();
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void releaseResources();
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void resizeSwapChain();
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void releaseSwapChain();
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void render();
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void customInit();
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void customRelease();
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void customRender();
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void exposeEvent(QExposeEvent *) override;
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bool event(QEvent *) override;
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bool m_running = false;
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bool m_notExposed = false;
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bool m_newlyExposed = false;
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QRhi *m_r = nullptr;
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bool m_hasSwapChain = false;
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QRhiSwapChain *m_sc = nullptr;
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QRhiRenderBuffer *m_ds = nullptr;
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QRhiRenderPassDescriptor *m_rp = nullptr;
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QMatrix4x4 m_proj;
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QElapsedTimer m_timer;
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int m_frameCount;
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#ifndef QT_NO_OPENGL
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QOffscreenSurface *m_fallbackSurface = nullptr;
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#endif
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QColor m_clearColor;
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friend int main(int, char**);
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};
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Window::Window()
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{
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// Tell the platform plugin what we want.
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switch (graphicsApi) {
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case OpenGL:
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#if QT_CONFIG(opengl)
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setSurfaceType(OpenGLSurface);
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setFormat(QRhiGles2InitParams::adjustedFormat());
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#endif
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break;
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case Vulkan:
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setSurfaceType(VulkanSurface);
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break;
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case D3D11:
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setSurfaceType(OpenGLSurface); // not a typo
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break;
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case Metal:
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#if (QT_VERSION >= QT_VERSION_CHECK(5, 12, 0))
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setSurfaceType(MetalSurface);
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#endif
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break;
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default:
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break;
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}
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m_clearColor = transparentBackground ? Qt::transparent : QColor::fromRgbF(0.4f, 0.7f, 0.0f, 1.0f);
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}
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Window::~Window()
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{
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releaseResources();
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}
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void Window::exposeEvent(QExposeEvent *)
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{
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// initialize and start rendering when the window becomes usable for graphics purposes
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if (isExposed() && !m_running) {
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m_running = true;
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init();
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resizeSwapChain();
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}
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const QSize surfaceSize = m_hasSwapChain ? m_sc->surfacePixelSize() : QSize();
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// stop pushing frames when not exposed (or size is 0)
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if ((!isExposed() || (m_hasSwapChain && surfaceSize.isEmpty())) && m_running)
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m_notExposed = true;
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// continue when exposed again and the surface has a valid size.
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// note that the surface size can be (0, 0) even though size() reports a valid one...
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if (isExposed() && m_running && m_notExposed && !surfaceSize.isEmpty()) {
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m_notExposed = false;
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m_newlyExposed = true;
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}
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// always render a frame on exposeEvent() (when exposed) in order to update
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// immediately on window resize.
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if (isExposed() && !surfaceSize.isEmpty())
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render();
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}
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bool Window::event(QEvent *e)
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{
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switch (e->type()) {
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case QEvent::UpdateRequest:
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render();
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break;
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case QEvent::PlatformSurface:
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// this is the proper time to tear down the swapchain (while the native window and surface are still around)
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if (static_cast<QPlatformSurfaceEvent *>(e)->surfaceEventType() == QPlatformSurfaceEvent::SurfaceAboutToBeDestroyed)
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releaseSwapChain();
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break;
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default:
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break;
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}
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return QWindow::event(e);
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}
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void Window::init()
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{
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if (graphicsApi == Null) {
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QRhiNullInitParams params;
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m_r = QRhi::create(QRhi::Null, ¶ms, rhiFlags);
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}
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#ifndef QT_NO_OPENGL
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if (graphicsApi == OpenGL) {
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m_fallbackSurface = QRhiGles2InitParams::newFallbackSurface();
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QRhiGles2InitParams params;
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params.fallbackSurface = m_fallbackSurface;
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params.window = this;
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m_r = QRhi::create(QRhi::OpenGLES2, ¶ms, rhiFlags);
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}
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#endif
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#if QT_CONFIG(vulkan)
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if (graphicsApi == Vulkan) {
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QRhiVulkanInitParams params;
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params.inst = vulkanInstance();
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params.window = this;
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m_r = QRhi::create(QRhi::Vulkan, ¶ms, rhiFlags);
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}
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#endif
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#ifdef Q_OS_WIN
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if (graphicsApi == D3D11) {
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QRhiD3D11InitParams params;
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params.enableDebugLayer = true;
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if (framesUntilTdr > 0) {
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params.framesUntilKillingDeviceViaTdr = framesUntilTdr;
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params.repeatDeviceKill = true;
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}
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m_r = QRhi::create(QRhi::D3D11, ¶ms, rhiFlags);
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}
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#endif
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#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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if (graphicsApi == Metal) {
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QRhiMetalInitParams params;
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m_r = QRhi::create(QRhi::Metal, ¶ms, rhiFlags);
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}
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#endif
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if (!m_r)
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qFatal("Failed to create RHI backend");
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// now onto the backend-independent init
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m_sc = m_r->newSwapChain();
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// allow depth-stencil, although we do not actually enable depth test/write for the triangle
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m_ds = m_r->newRenderBuffer(QRhiRenderBuffer::DepthStencil,
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QSize(), // no need to set the size here, due to UsedWithSwapChainOnly
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sampleCount,
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QRhiRenderBuffer::UsedWithSwapChainOnly);
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m_sc->setWindow(this);
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m_sc->setDepthStencil(m_ds);
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m_sc->setSampleCount(sampleCount);
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m_sc->setFlags(scFlags);
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m_rp = m_sc->newCompatibleRenderPassDescriptor();
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m_sc->setRenderPassDescriptor(m_rp);
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customInit();
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}
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void Window::releaseResources()
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{
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customRelease();
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delete m_rp;
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m_rp = nullptr;
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delete m_ds;
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m_ds = nullptr;
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delete m_sc;
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m_sc = nullptr;
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delete m_r;
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m_r = nullptr;
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#ifndef QT_NO_OPENGL
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delete m_fallbackSurface;
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m_fallbackSurface = nullptr;
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#endif
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}
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void Window::resizeSwapChain()
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{
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m_hasSwapChain = m_sc->buildOrResize(); // also handles m_ds
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m_frameCount = 0;
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m_timer.restart();
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const QSize outputSize = m_sc->currentPixelSize();
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m_proj = m_r->clipSpaceCorrMatrix();
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m_proj.perspective(45.0f, outputSize.width() / (float) outputSize.height(), 0.01f, 1000.0f);
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m_proj.translate(0, 0, -4);
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}
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void Window::releaseSwapChain()
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{
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if (m_hasSwapChain) {
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m_hasSwapChain = false;
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m_sc->release();
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}
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}
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void Window::render()
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{
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if (!m_hasSwapChain || m_notExposed)
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return;
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// If the window got resized or got newly exposed, resize the swapchain.
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// (the newly-exposed case is not actually required by some
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// platforms/backends, but f.ex. Vulkan on Windows seems to need it)
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if (m_sc->currentPixelSize() != m_sc->surfacePixelSize() || m_newlyExposed) {
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resizeSwapChain();
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if (!m_hasSwapChain)
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return;
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m_newlyExposed = false;
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}
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// Start a new frame. This is where we block when too far ahead of
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// GPU/present, and that's what throttles the thread to the refresh rate.
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// (except for OpenGL where it happens either in endFrame or somewhere else
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// depending on the GL implementation)
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QRhi::FrameOpResult r = m_r->beginFrame(m_sc, beginFrameFlags);
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if (r == QRhi::FrameOpSwapChainOutOfDate) {
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resizeSwapChain();
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if (!m_hasSwapChain)
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return;
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r = m_r->beginFrame(m_sc);
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}
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if (r != QRhi::FrameOpSuccess) {
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requestUpdate();
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return;
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}
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m_frameCount += 1;
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if (m_timer.elapsed() > 1000) {
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if (rhiFlags.testFlag(QRhi::EnableProfiling)) {
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const QRhiProfiler::CpuTime ff = m_r->profiler()->frameToFrameTimes(m_sc);
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const QRhiProfiler::CpuTime be = m_r->profiler()->frameBuildTimes(m_sc);
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const QRhiProfiler::GpuTime gp = m_r->profiler()->gpuFrameTimes(m_sc);
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if (m_r->isFeatureSupported(QRhi::Timestamps)) {
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qDebug("ca. %d fps. "
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"frame-to-frame: min %lld max %lld avg %f. "
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"frame build: min %lld max %lld avg %f. "
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"gpu frame time: min %f max %f avg %f",
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m_frameCount,
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ff.minTime, ff.maxTime, ff.avgTime,
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be.minTime, be.maxTime, be.avgTime,
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gp.minTime, gp.maxTime, gp.avgTime);
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} else {
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qDebug("ca. %d fps. "
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"frame-to-frame: min %lld max %lld avg %f. "
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"frame build: min %lld max %lld avg %f. ",
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m_frameCount,
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ff.minTime, ff.maxTime, ff.avgTime,
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be.minTime, be.maxTime, be.avgTime);
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}
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} else {
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qDebug("ca. %d fps", m_frameCount);
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}
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m_timer.restart();
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m_frameCount = 0;
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}
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customRender();
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m_r->endFrame(m_sc, endFrameFlags);
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|
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if (!scFlags.testFlag(QRhiSwapChain::NoVSync))
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requestUpdate();
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else // try prevent all delays when NoVSync
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QCoreApplication::postEvent(this, new QEvent(QEvent::UpdateRequest));
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}
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|
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int main(int argc, char **argv)
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{
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QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QGuiApplication app(argc, argv);
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|
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QLoggingCategory::setFilterRules(QLatin1String("qt.rhi.*=true"));
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|
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// Defaults.
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#if defined(Q_OS_WIN)
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graphicsApi = D3D11;
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#elif defined(Q_OS_MACOS) || defined(Q_OS_IOS)
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graphicsApi = Metal;
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#elif QT_CONFIG(vulkan)
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graphicsApi = Vulkan;
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#else
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graphicsApi = OpenGL;
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#endif
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|
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// Allow overriding via the command line.
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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 (2.x)"));
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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 d3dOption({ "d", "d3d11" }, QLatin1String("Direct3D 11"));
|
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cmdLineParser.addOption(d3dOption);
|
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QCommandLineOption mtlOption({ "m", "metal" }, QLatin1String("Metal"));
|
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cmdLineParser.addOption(mtlOption);
|
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// Testing cleanup both with QWindow::close() (hitting X or Alt-F4) and
|
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// QCoreApplication::quit() (e.g. what a menu widget would do) is important.
|
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// Use this parameter for the latter.
|
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QCommandLineOption sdOption({ "s", "self-destruct" }, QLatin1String("Self-destruct after 5 seconds."));
|
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cmdLineParser.addOption(sdOption);
|
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// Attempt testing device lost situations on D3D at least.
|
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QCommandLineOption tdrOption(QLatin1String("curse"), QLatin1String("Curse the graphics device. "
|
|
"(generate a device reset every <count> frames when on D3D11)"),
|
|
QLatin1String("count"));
|
|
cmdLineParser.addOption(tdrOption);
|
|
// Allow testing preferring the software adapter (D3D).
|
|
QCommandLineOption swOption(QLatin1String("software"), QLatin1String("Prefer a software renderer when choosing the adapter. "
|
|
"Only applicable with some APIs and platforms."));
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cmdLineParser.addOption(swOption);
|
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// Allow testing having a semi-transparent window.
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QCommandLineOption transparentOption(QLatin1String("transparent"), QLatin1String("Make background transparent"));
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cmdLineParser.addOption(transparentOption);
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|
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cmdLineParser.process(app);
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if (cmdLineParser.isSet(nullOption))
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graphicsApi = Null;
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if (cmdLineParser.isSet(glOption))
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graphicsApi = OpenGL;
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if (cmdLineParser.isSet(vkOption))
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graphicsApi = Vulkan;
|
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if (cmdLineParser.isSet(d3dOption))
|
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graphicsApi = D3D11;
|
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if (cmdLineParser.isSet(mtlOption))
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graphicsApi = Metal;
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|
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qDebug("Selected graphics API is %s", qPrintable(graphicsApiName()));
|
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qDebug("This is a multi-api example, use command line arguments to override:\n%s", qPrintable(cmdLineParser.helpText()));
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|
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if (cmdLineParser.isSet(transparentOption)) {
|
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transparentBackground = true;
|
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scFlags |= QRhiSwapChain::SurfaceHasPreMulAlpha;
|
|
}
|
|
|
|
#ifdef EXAMPLEFW_PREINIT
|
|
void preInit();
|
|
preInit();
|
|
#endif
|
|
|
|
// OpenGL specifics.
|
|
QSurfaceFormat fmt;
|
|
fmt.setDepthBufferSize(24);
|
|
fmt.setStencilBufferSize(8);
|
|
if (sampleCount > 1)
|
|
fmt.setSamples(sampleCount);
|
|
if (scFlags.testFlag(QRhiSwapChain::NoVSync))
|
|
fmt.setSwapInterval(0);
|
|
if (scFlags.testFlag(QRhiSwapChain::sRGB))
|
|
fmt.setColorSpace(QSurfaceFormat::sRGBColorSpace);
|
|
// Exception: The alpha size is not necessarily OpenGL specific.
|
|
if (transparentBackground)
|
|
fmt.setAlphaBufferSize(8);
|
|
QSurfaceFormat::setDefaultFormat(fmt);
|
|
|
|
// Vulkan setup.
|
|
#if QT_CONFIG(vulkan)
|
|
QVulkanInstance inst;
|
|
if (graphicsApi == Vulkan) {
|
|
#ifndef Q_OS_ANDROID
|
|
inst.setLayers(QByteArrayList() << "VK_LAYER_LUNARG_standard_validation");
|
|
#else
|
|
inst.setLayers(QByteArrayList()
|
|
<< "VK_LAYER_GOOGLE_threading"
|
|
<< "VK_LAYER_LUNARG_parameter_validation"
|
|
<< "VK_LAYER_LUNARG_object_tracker"
|
|
<< "VK_LAYER_LUNARG_core_validation"
|
|
<< "VK_LAYER_LUNARG_image"
|
|
<< "VK_LAYER_LUNARG_swapchain"
|
|
<< "VK_LAYER_GOOGLE_unique_objects");
|
|
#endif
|
|
inst.setExtensions(QByteArrayList()
|
|
<< "VK_KHR_get_physical_device_properties2");
|
|
if (!inst.create()) {
|
|
qWarning("Failed to create Vulkan instance, switching to OpenGL");
|
|
graphicsApi = OpenGL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (cmdLineParser.isSet(tdrOption))
|
|
framesUntilTdr = cmdLineParser.value(tdrOption).toInt();
|
|
|
|
if (cmdLineParser.isSet(swOption))
|
|
rhiFlags |= QRhi::PreferSoftwareRenderer;
|
|
|
|
// Create and show the window.
|
|
Window w;
|
|
#if QT_CONFIG(vulkan)
|
|
if (graphicsApi == Vulkan)
|
|
w.setVulkanInstance(&inst);
|
|
#endif
|
|
w.resize(1280, 720);
|
|
w.setTitle(QCoreApplication::applicationName() + QLatin1String(" - ") + graphicsApiName());
|
|
w.show();
|
|
|
|
if (cmdLineParser.isSet(sdOption))
|
|
QTimer::singleShot(5000, qGuiApp, SLOT(quit()));
|
|
|
|
int ret = app.exec();
|
|
|
|
// Window::event() will not get invoked when the
|
|
// PlatformSurfaceAboutToBeDestroyed event is sent during the QWindow
|
|
// destruction. That happens only when exiting via app::quit() instead of
|
|
// the more common QWindow::close(). Take care of it: if the
|
|
// QPlatformWindow is still around (there was no close() yet), get rid of
|
|
// the swapchain while it's not too late.
|
|
if (w.handle())
|
|
w.releaseSwapChain();
|
|
|
|
return ret;
|
|
}
|