diff options
Diffstat (limited to 'tests/manual/rhi/hellominimalcrossgfxtriangle/hellominimalcrossgfxtriangle.cpp')
| -rw-r--r-- | tests/manual/rhi/hellominimalcrossgfxtriangle/hellominimalcrossgfxtriangle.cpp | 550 |
1 files changed, 0 insertions, 550 deletions
diff --git a/tests/manual/rhi/hellominimalcrossgfxtriangle/hellominimalcrossgfxtriangle.cpp b/tests/manual/rhi/hellominimalcrossgfxtriangle/hellominimalcrossgfxtriangle.cpp deleted file mode 100644 index 9b03a48bfe..0000000000 --- a/tests/manual/rhi/hellominimalcrossgfxtriangle/hellominimalcrossgfxtriangle.cpp +++ /dev/null @@ -1,550 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2018 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -// This is a compact, minimal, single-file demo of deciding the backend at -// runtime while using the exact same shaders and rendering code without any -// branching whatsoever once the QWindow is up and the RHI is initialized. - -#include <QGuiApplication> -#include <QCommandLineParser> -#include <QWindow> -#include <QPlatformSurfaceEvent> -#include <QElapsedTimer> - -#include <QtGui/private/qshader_p.h> -#include <QFile> - -#include <QtGui/private/qrhinull_p.h> - -#ifndef QT_NO_OPENGL -#include <QtGui/private/qrhigles2_p.h> -#include <QOffscreenSurface> -#endif - -#if QT_CONFIG(vulkan) -#include <QLoggingCategory> -#include <QtGui/private/qrhivulkan_p.h> -#endif - -#ifdef Q_OS_WIN -#include <QtGui/private/qrhid3d11_p.h> -#endif - -#if defined(Q_OS_MACOS) || defined(Q_OS_IOS) -#include <QtGui/private/qrhimetal_p.h> -#endif - -static float vertexData[] = { - // Y up (note clipSpaceCorrMatrix in m_proj), CCW - 0.0f, 0.5f, 1.0f, 0.0f, 0.0f, - -0.5f, -0.5f, 0.0f, 1.0f, 0.0f, - 0.5f, -0.5f, 0.0f, 0.0f, 1.0f, -}; - -static QShader getShader(const QString &name) -{ - QFile f(name); - if (f.open(QIODevice::ReadOnly)) - return QShader::fromSerialized(f.readAll()); - - return QShader(); -} - -enum GraphicsApi -{ - OpenGL, - Vulkan, - D3D11, - Metal, - Null -}; - -static GraphicsApi graphicsApi; - -static QString graphicsApiName() -{ - switch (graphicsApi) { - case OpenGL: - return QLatin1String("OpenGL 2.x"); - case Vulkan: - return QLatin1String("Vulkan"); - case D3D11: - return QLatin1String("Direct3D 11"); - case Metal: - return QLatin1String("Metal"); - case Null: - return QLatin1String("Null"); - default: - break; - } - return QString(); -} - -class Window : public QWindow -{ -public: - Window(); - ~Window(); - - void init(); - void releaseResources(); - void resizeSwapChain(); - void releaseSwapChain(); - void render(); - - void exposeEvent(QExposeEvent *) override; - bool event(QEvent *) override; - -private: - bool m_running = false; - bool m_notExposed = false; - bool m_newlyExposed = false; - - QRhi *m_r = nullptr; - bool m_hasSwapChain = false; - QRhiSwapChain *m_sc = nullptr; - QRhiRenderBuffer *m_ds = nullptr; - QRhiRenderPassDescriptor *m_rp = nullptr; - QRhiBuffer *m_vbuf = nullptr; - bool m_vbufReady = false; - QRhiBuffer *m_ubuf = nullptr; - QRhiShaderResourceBindings *m_srb = nullptr; - QRhiGraphicsPipeline *m_ps = nullptr; - QVector<QRhiResource *> releasePool; - - QMatrix4x4 m_proj; - float m_rotation = 0; - float m_opacity = 1; - int m_opacityDir = -1; - - QElapsedTimer m_timer; - qint64 m_elapsedMs; - int m_elapsedCount; - -#ifndef QT_NO_OPENGL - QOffscreenSurface *m_fallbackSurface = nullptr; -#endif -}; - -Window::Window() -{ - // Tell the platform plugin what we want. - switch (graphicsApi) { - case OpenGL: -#if QT_CONFIG(opengl) - setSurfaceType(OpenGLSurface); - setFormat(QRhiGles2InitParams::adjustedFormat()); -#endif - break; - case Vulkan: - setSurfaceType(VulkanSurface); - break; - case D3D11: - setSurfaceType(OpenGLSurface); // not a typo - break; - case Metal: -#if (QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)) - setSurfaceType(MetalSurface); -#endif - break; - default: - break; - } -} - -Window::~Window() -{ - releaseResources(); -} - -void Window::exposeEvent(QExposeEvent *) -{ - // initialize and start rendering when the window becomes usable for graphics purposes - if (isExposed() && !m_running) { - m_running = true; - init(); - resizeSwapChain(); - } - - // stop pushing frames when not exposed (or size is 0) - if ((!isExposed() || (m_hasSwapChain && m_sc->surfacePixelSize().isEmpty())) && m_running) - m_notExposed = true; - - // continue when exposed again and the surface has a valid size. - // note that the surface size can be (0, 0) even though size() reports a valid one... - if (isExposed() && m_running && m_notExposed && !m_sc->surfacePixelSize().isEmpty()) { - m_notExposed = false; - m_newlyExposed = true; - } - - // always render a frame on exposeEvent() (when exposed) in order to update - // immediately on window resize. - if (isExposed() && !m_sc->surfacePixelSize().isEmpty()) - render(); -} - -bool Window::event(QEvent *e) -{ - switch (e->type()) { - case QEvent::UpdateRequest: - render(); - break; - - case QEvent::PlatformSurface: - // this is the proper time to tear down the swapchain (while the native window and surface are still around) - if (static_cast<QPlatformSurfaceEvent *>(e)->surfaceEventType() == QPlatformSurfaceEvent::SurfaceAboutToBeDestroyed) - releaseSwapChain(); - break; - - default: - break; - } - - return QWindow::event(e); -} - -void Window::init() -{ - if (graphicsApi == Null) { - QRhiNullInitParams params; - m_r = QRhi::create(QRhi::Null, ¶ms); - } - -#ifndef QT_NO_OPENGL - if (graphicsApi == OpenGL) { - m_fallbackSurface = QRhiGles2InitParams::newFallbackSurface(); - QRhiGles2InitParams params; - params.fallbackSurface = m_fallbackSurface; - params.window = this; - m_r = QRhi::create(QRhi::OpenGLES2, ¶ms); - } -#endif - -#if QT_CONFIG(vulkan) - if (graphicsApi == Vulkan) { - QRhiVulkanInitParams params; - params.inst = vulkanInstance(); - params.window = this; - m_r = QRhi::create(QRhi::Vulkan, ¶ms); - } -#endif - -#ifdef Q_OS_WIN - if (graphicsApi == D3D11) { - QRhiD3D11InitParams params; - m_r = QRhi::create(QRhi::D3D11, ¶ms); - } -#endif - -#if defined(Q_OS_MACOS) || defined(Q_OS_IOS) - if (graphicsApi == Metal) { - QRhiMetalInitParams params; - m_r = QRhi::create(QRhi::Metal, ¶ms); - } -#endif - - if (!m_r) - qFatal("Failed to create RHI backend"); - - // now onto the backend-independent init - - m_sc = m_r->newSwapChain(); - // allow depth-stencil, although we do not actually enable depth test/write for the triangle - m_ds = m_r->newRenderBuffer(QRhiRenderBuffer::DepthStencil, - QSize(), // no need to set the size here, due to UsedWithSwapChainOnly - 1, - QRhiRenderBuffer::UsedWithSwapChainOnly); - releasePool << m_ds; - m_sc->setWindow(this); - m_sc->setDepthStencil(m_ds); - m_rp = m_sc->newCompatibleRenderPassDescriptor(); - releasePool << m_rp; - m_sc->setRenderPassDescriptor(m_rp); - - m_vbuf = m_r->newBuffer(QRhiBuffer::Immutable, QRhiBuffer::VertexBuffer, sizeof(vertexData)); - releasePool << m_vbuf; - m_vbuf->build(); - m_vbufReady = false; - - m_ubuf = m_r->newBuffer(QRhiBuffer::Dynamic, QRhiBuffer::UniformBuffer, 68); - releasePool << m_ubuf; - m_ubuf->build(); - - m_srb = m_r->newShaderResourceBindings(); - releasePool << m_srb; - m_srb->setBindings({ - QRhiShaderResourceBinding::uniformBuffer(0, QRhiShaderResourceBinding::VertexStage | QRhiShaderResourceBinding::FragmentStage, m_ubuf) - }); - m_srb->build(); - - m_ps = m_r->newGraphicsPipeline(); - releasePool << m_ps; - - QRhiGraphicsPipeline::TargetBlend premulAlphaBlend; - premulAlphaBlend.enable = true; - m_ps->setTargetBlends({ premulAlphaBlend }); - - const QShader vs = getShader(QLatin1String(":/color.vert.qsb")); - if (!vs.isValid()) - qFatal("Failed to load shader pack (vertex)"); - const QShader fs = getShader(QLatin1String(":/color.frag.qsb")); - if (!fs.isValid()) - qFatal("Failed to load shader pack (fragment)"); - - m_ps->setShaderStages({ - { QRhiShaderStage::Vertex, vs }, - { QRhiShaderStage::Fragment, fs } - }); - - QRhiVertexInputLayout inputLayout; - inputLayout.setBindings({ - { 5 * sizeof(float) } - }); - inputLayout.setAttributes({ - { 0, 0, QRhiVertexInputAttribute::Float2, 0 }, - { 0, 1, QRhiVertexInputAttribute::Float3, 2 * sizeof(float) } - }); - - m_ps->setVertexInputLayout(inputLayout); - m_ps->setShaderResourceBindings(m_srb); - m_ps->setRenderPassDescriptor(m_rp); - - m_ps->build(); -} - -void Window::releaseResources() -{ - qDeleteAll(releasePool); - releasePool.clear(); - - delete m_sc; // native swapchain is likely released already - m_sc = nullptr; - - delete m_r; - -#ifndef QT_NO_OPENGL - delete m_fallbackSurface; -#endif -} - -void Window::resizeSwapChain() -{ - m_hasSwapChain = m_sc->buildOrResize(); // also handles m_ds - - m_elapsedMs = 0; - m_elapsedCount = 0; - - const QSize outputSize = m_sc->currentPixelSize(); - m_proj = m_r->clipSpaceCorrMatrix(); - m_proj.perspective(45.0f, outputSize.width() / (float) outputSize.height(), 0.01f, 100.0f); - m_proj.translate(0, 0, -4); -} - -void Window::releaseSwapChain() -{ - if (m_hasSwapChain) { - m_hasSwapChain = false; - m_sc->release(); - } -} - -void Window::render() -{ - if (!m_hasSwapChain || m_notExposed) - return; - - // If the window got resized or got newly exposed, resize the swapchain. - // (the newly-exposed case is not actually required by some - // platforms/backends, but f.ex. Vulkan on Windows seems to need it) - if (m_sc->currentPixelSize() != m_sc->surfacePixelSize() || m_newlyExposed) { - resizeSwapChain(); - if (!m_hasSwapChain) - return; - m_newlyExposed = false; - } - - // Start a new frame. This is where we block when too far ahead of - // GPU/present, and that's what throttles the thread to the refresh rate. - // (except for OpenGL where it happens either in endFrame or somewhere else - // depending on the GL implementation) - QRhi::FrameOpResult r = m_r->beginFrame(m_sc); - if (r == QRhi::FrameOpSwapChainOutOfDate) { - resizeSwapChain(); - if (!m_hasSwapChain) - return; - r = m_r->beginFrame(m_sc); - } - if (r != QRhi::FrameOpSuccess) { - requestUpdate(); - return; - } - - if (m_elapsedCount) - m_elapsedMs += m_timer.elapsed(); - m_timer.restart(); - m_elapsedCount += 1; - if (m_elapsedMs >= 4000) { - qDebug("%f", m_elapsedCount / 4.0f); - m_elapsedMs = 0; - m_elapsedCount = 0; - } - - // Set up buffer updates. - QRhiResourceUpdateBatch *u = m_r->nextResourceUpdateBatch(); - if (!m_vbufReady) { - m_vbufReady = true; - u->uploadStaticBuffer(m_vbuf, vertexData); - } - m_rotation += 1.0f; - QMatrix4x4 mvp = m_proj; - mvp.rotate(m_rotation, 0, 1, 0); - u->updateDynamicBuffer(m_ubuf, 0, 64, mvp.constData()); - m_opacity += m_opacityDir * 0.005f; - if (m_opacity < 0.0f || m_opacity > 1.0f) { - m_opacityDir *= -1; - m_opacity = qBound(0.0f, m_opacity, 1.0f); - } - u->updateDynamicBuffer(m_ubuf, 64, 4, &m_opacity); - - QRhiCommandBuffer *cb = m_sc->currentFrameCommandBuffer(); - const QSize outputSizeInPixels = m_sc->currentPixelSize(); - - // Apply buffer updates, clear, start the renderpass (where applicable). - cb->beginPass(m_sc->currentFrameRenderTarget(), QColor::fromRgbF(0.4f, 0.7f, 0.0f, 1.0f), { 1.0f, 0 }, u); - - cb->setGraphicsPipeline(m_ps); - cb->setViewport({ 0, 0, float(outputSizeInPixels.width()), float(outputSizeInPixels.height()) }); - cb->setShaderResources(); - - const QRhiCommandBuffer::VertexInput vbufBinding(m_vbuf, 0); - cb->setVertexInput(0, 1, &vbufBinding); - cb->draw(3); - - cb->endPass(); - - // Submit. - m_r->endFrame(m_sc); - - requestUpdate(); // render continuously, throttled by the presentation rate (due to beginFrame above) -} - -int main(int argc, char **argv) -{ - QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling); - QGuiApplication app(argc, argv); - - // Defaults. -#if defined(Q_OS_WIN) - graphicsApi = D3D11; -#elif defined(Q_OS_MACOS) || defined(Q_OS_IOS) - graphicsApi = Metal; -#elif QT_CONFIG(vulkan) - graphicsApi = Vulkan; -#else - graphicsApi = OpenGL; -#endif - - // Allow overriding via the command line. - QCommandLineParser cmdLineParser; - cmdLineParser.addHelpOption(); - QCommandLineOption glOption({ "g", "opengl" }, QLatin1String("OpenGL (2.x)")); - cmdLineParser.addOption(glOption); - QCommandLineOption vkOption({ "v", "vulkan" }, QLatin1String("Vulkan")); - cmdLineParser.addOption(vkOption); - QCommandLineOption d3dOption({ "d", "d3d11" }, QLatin1String("Direct3D 11")); - cmdLineParser.addOption(d3dOption); - QCommandLineOption mtlOption({ "m", "metal" }, QLatin1String("Metal")); - cmdLineParser.addOption(mtlOption); - QCommandLineOption nullOption({ "n", "null" }, QLatin1String("Null")); - cmdLineParser.addOption(nullOption); - cmdLineParser.process(app); - if (cmdLineParser.isSet(glOption)) - graphicsApi = OpenGL; - if (cmdLineParser.isSet(vkOption)) - graphicsApi = Vulkan; - if (cmdLineParser.isSet(d3dOption)) - graphicsApi = D3D11; - if (cmdLineParser.isSet(mtlOption)) - graphicsApi = Metal; - if (cmdLineParser.isSet(nullOption)) - graphicsApi = Null; - - // Vulkan setup. -#if QT_CONFIG(vulkan) - QVulkanInstance inst; - if (graphicsApi == Vulkan) { - if (!inst.create()) { - qWarning("Failed to create Vulkan instance, switching to OpenGL"); - graphicsApi = OpenGL; - } - } -#endif - - // Create and show the window. - Window w; -#if QT_CONFIG(vulkan) - if (graphicsApi == Vulkan) - w.setVulkanInstance(&inst); -#endif - w.resize(1280, 720); - w.setTitle(graphicsApiName()); - w.show(); - - // 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 app.exec(); -} |