9d7ef58b2b
Summary: KWin needs to support restarting the OpenGL compositor in case of a graphics reset event. On Wayland the tricky part is that the applications should not notice this. Most importantly KWin cannot just destroy the EGLDisplay and create a new one. But this is how a restart works: the complete compositor gets torn down and recreated - including the EGLDisplay. This change moves ownership of the EGLDisplay to the Platform. The AbstractEglBackend subclasses query the Platform whether there is already an EGLDisplay. Only if there is no EGLDisplay the EGLDisplay is created and only if no EGLDisplay is registered with Wayland the bind is performed. Another change is regarding the destruction: the AbstractEglDisplay does no longer unbind the Wayland display and does no longer destroy the EGLDisplay. The EGLDisplay is destroyed by the Platform - so very late on application exit. The Wayland display is unbound when the Compositor terminates. Test Plan: Limited testing with the added auto-test. This one needs to be extended to fully verify that OpenGL applications continue to work. But this requires build.kde.org to support OpenGL on Wayland. Reviewers: #kwin, #plasma_on_wayland Subscribers: plasma-devel, kwin Tags: #plasma_on_wayland, #kwin Differential Revision: https://phabricator.kde.org/D2202
498 lines
17 KiB
C++
498 lines
17 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "abstract_egl_backend.h"
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#include "options.h"
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#include "platform.h"
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#include "wayland_server.h"
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#include <KWayland/Server/buffer_interface.h>
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#include <KWayland/Server/display.h>
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#include <KWayland/Server/surface_interface.h>
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// kwin libs
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#include <kwinglplatform.h>
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// Qt
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#include <QOpenGLContext>
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#include <QOpenGLFramebufferObject>
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namespace KWin
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{
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typedef GLboolean(*eglBindWaylandDisplayWL_func)(EGLDisplay dpy, wl_display *display);
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typedef GLboolean(*eglUnbindWaylandDisplayWL_func)(EGLDisplay dpy, wl_display *display);
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typedef GLboolean(*eglQueryWaylandBufferWL_func)(EGLDisplay dpy, struct wl_resource *buffer, EGLint attribute, EGLint *value);
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eglBindWaylandDisplayWL_func eglBindWaylandDisplayWL = nullptr;
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eglUnbindWaylandDisplayWL_func eglUnbindWaylandDisplayWL = nullptr;
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eglQueryWaylandBufferWL_func eglQueryWaylandBufferWL = nullptr;
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#ifndef EGL_WAYLAND_BUFFER_WL
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#define EGL_WAYLAND_BUFFER_WL 0x31D5
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#endif
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#ifndef EGL_WAYLAND_PLANE_WL
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#define EGL_WAYLAND_PLANE_WL 0x31D6
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#endif
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#ifndef EGL_WAYLAND_Y_INVERTED_WL
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#define EGL_WAYLAND_Y_INVERTED_WL 0x31DB
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#endif
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AbstractEglBackend::AbstractEglBackend()
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: OpenGLBackend()
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{
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}
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AbstractEglBackend::~AbstractEglBackend() = default;
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void AbstractEglBackend::unbindWaylandDisplay()
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{
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auto display = kwinApp()->platform()->sceneEglDisplay();
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if (eglUnbindWaylandDisplayWL && display != EGL_NO_DISPLAY) {
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eglUnbindWaylandDisplayWL(display, *(WaylandServer::self()->display()));
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}
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}
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void AbstractEglBackend::cleanup()
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{
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cleanupGL();
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doneCurrent();
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eglDestroyContext(m_display, m_context);
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cleanupSurfaces();
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eglReleaseThread();
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}
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void AbstractEglBackend::cleanupSurfaces()
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{
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if (m_surface != EGL_NO_SURFACE) {
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eglDestroySurface(m_display, m_surface);
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}
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}
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bool AbstractEglBackend::initEglAPI()
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{
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EGLint major, minor;
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if (eglInitialize(m_display, &major, &minor) == EGL_FALSE) {
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qCWarning(KWIN_CORE) << "eglInitialize failed";
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EGLint error = eglGetError();
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if (error != EGL_SUCCESS) {
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qCWarning(KWIN_CORE) << "Error during eglInitialize " << error;
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}
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return false;
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}
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EGLint error = eglGetError();
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if (error != EGL_SUCCESS) {
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qCWarning(KWIN_CORE) << "Error during eglInitialize " << error;
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return false;
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}
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qCDebug(KWIN_CORE) << "Egl Initialize succeeded";
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if (eglBindAPI(isOpenGLES() ? EGL_OPENGL_ES_API : EGL_OPENGL_API) == EGL_FALSE) {
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qCCritical(KWIN_CORE) << "bind OpenGL API failed";
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return false;
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}
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qCDebug(KWIN_CORE) << "EGL version: " << major << "." << minor;
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return true;
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}
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void AbstractEglBackend::initKWinGL()
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{
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initEGL();
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GLPlatform *glPlatform = GLPlatform::instance();
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glPlatform->detect(EglPlatformInterface);
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if (GLPlatform::instance()->driver() == Driver_Intel)
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options->setUnredirectFullscreen(false); // bug #252817
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options->setGlPreferBufferSwap(options->glPreferBufferSwap()); // resolve autosetting
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if (options->glPreferBufferSwap() == Options::AutoSwapStrategy)
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options->setGlPreferBufferSwap('e'); // for unknown drivers - should not happen
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glPlatform->printResults();
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initGL(EglPlatformInterface);
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}
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void AbstractEglBackend::initBufferAge()
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{
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setSupportsBufferAge(false);
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if (hasGLExtension(QByteArrayLiteral("EGL_EXT_buffer_age"))) {
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const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");
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if (useBufferAge != "0")
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setSupportsBufferAge(true);
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}
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}
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void AbstractEglBackend::initWayland()
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{
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if (!WaylandServer::self()) {
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return;
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}
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if (hasGLExtension(QByteArrayLiteral("EGL_WL_bind_wayland_display"))) {
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eglBindWaylandDisplayWL = (eglBindWaylandDisplayWL_func)eglGetProcAddress("eglBindWaylandDisplayWL");
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eglUnbindWaylandDisplayWL = (eglUnbindWaylandDisplayWL_func)eglGetProcAddress("eglUnbindWaylandDisplayWL");
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eglQueryWaylandBufferWL = (eglQueryWaylandBufferWL_func)eglGetProcAddress("eglQueryWaylandBufferWL");
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// only bind if not already done
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if (waylandServer()->display()->eglDisplay() != eglDisplay()) {
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if (!eglBindWaylandDisplayWL(eglDisplay(), *(WaylandServer::self()->display()))) {
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eglUnbindWaylandDisplayWL = nullptr;
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eglQueryWaylandBufferWL = nullptr;
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} else {
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waylandServer()->display()->setEglDisplay(eglDisplay());
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}
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}
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}
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}
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void AbstractEglBackend::initClientExtensions()
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{
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// Get the list of client extensions
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const char* clientExtensionsCString = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
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const QByteArray clientExtensionsString = QByteArray::fromRawData(clientExtensionsCString, qstrlen(clientExtensionsCString));
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if (clientExtensionsString.isEmpty()) {
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// If eglQueryString() returned NULL, the implementation doesn't support
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// EGL_EXT_client_extensions. Expect an EGL_BAD_DISPLAY error.
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(void) eglGetError();
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}
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m_clientExtensions = clientExtensionsString.split(' ');
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}
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bool AbstractEglBackend::hasClientExtension(const QByteArray &ext) const
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{
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return m_clientExtensions.contains(ext);
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}
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bool AbstractEglBackend::makeCurrent()
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{
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if (QOpenGLContext *context = QOpenGLContext::currentContext()) {
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// Workaround to tell Qt that no QOpenGLContext is current
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context->doneCurrent();
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}
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const bool current = eglMakeCurrent(m_display, m_surface, m_surface, m_context);
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return current;
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}
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void AbstractEglBackend::doneCurrent()
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{
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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}
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bool AbstractEglBackend::isOpenGLES() const
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{
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if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
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return true;
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}
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return QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES;
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}
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bool AbstractEglBackend::createContext()
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{
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const QByteArray eglExtensions = eglQueryString(m_display, EGL_EXTENSIONS);
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const QList<QByteArray> extensions = eglExtensions.split(' ');
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const bool haveRobustness = extensions.contains(QByteArrayLiteral("EGL_EXT_create_context_robustness"));
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const bool haveCreateContext = extensions.contains(QByteArrayLiteral("EGL_KHR_create_context"));
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EGLContext ctx = EGL_NO_CONTEXT;
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if (isOpenGLES()) {
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if (haveCreateContext && haveRobustness) {
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const EGLint context_attribs[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT, EGL_TRUE,
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EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT, EGL_LOSE_CONTEXT_ON_RESET_EXT,
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EGL_NONE
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};
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, context_attribs);
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}
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if (ctx == EGL_NO_CONTEXT) {
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const EGLint context_attribs[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, context_attribs);
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}
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} else {
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// Try to create a 3.1 core context
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if (options->glCoreProfile() && haveCreateContext) {
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if (haveRobustness) {
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const int attribs[] = {
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EGL_CONTEXT_MAJOR_VERSION_KHR, 3,
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EGL_CONTEXT_MINOR_VERSION_KHR, 1,
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EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, EGL_LOSE_CONTEXT_ON_RESET_KHR,
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EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR,
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EGL_NONE
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};
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, attribs);
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}
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if (ctx == EGL_NO_CONTEXT) {
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// try without robustness
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const EGLint attribs[] = {
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EGL_CONTEXT_MAJOR_VERSION_KHR, 3,
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EGL_CONTEXT_MINOR_VERSION_KHR, 1,
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EGL_NONE
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};
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, attribs);
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}
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}
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if (ctx == EGL_NO_CONTEXT && haveRobustness && haveCreateContext) {
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const int attribs[] = {
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EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR,
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EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, EGL_LOSE_CONTEXT_ON_RESET_KHR,
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EGL_NONE
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};
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, attribs);
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}
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if (ctx == EGL_NO_CONTEXT) {
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// and last but not least: try without robustness
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const EGLint attribs[] = {
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EGL_NONE
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};
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, attribs);
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}
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}
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if (ctx == EGL_NO_CONTEXT) {
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qCCritical(KWIN_CORE) << "Create Context failed";
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return false;
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}
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m_context = ctx;
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return true;
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}
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void AbstractEglBackend::setEglDisplay(const EGLDisplay &display) {
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m_display = display;
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kwinApp()->platform()->setSceneEglDisplay(display);
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}
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AbstractEglTexture::AbstractEglTexture(SceneOpenGL::Texture *texture, AbstractEglBackend *backend)
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: SceneOpenGL::TexturePrivate()
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, q(texture)
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, m_backend(backend)
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, m_image(EGL_NO_IMAGE_KHR)
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{
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m_target = GL_TEXTURE_2D;
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}
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AbstractEglTexture::~AbstractEglTexture()
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{
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if (m_image != EGL_NO_IMAGE_KHR) {
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eglDestroyImageKHR(m_backend->eglDisplay(), m_image);
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}
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}
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OpenGLBackend *AbstractEglTexture::backend()
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{
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return m_backend;
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}
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bool AbstractEglTexture::loadTexture(WindowPixmap *pixmap)
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{
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const auto &buffer = pixmap->buffer();
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if (buffer.isNull()) {
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if (updateFromFBO(pixmap->fbo())) {
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return true;
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}
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return false;
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}
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// try Wayland loading
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if (auto s = pixmap->surface()) {
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s->resetTrackedDamage();
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}
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if (buffer->shmBuffer()) {
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return loadShmTexture(buffer);
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} else {
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return loadEglTexture(buffer);
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}
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}
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void AbstractEglTexture::updateTexture(WindowPixmap *pixmap)
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{
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const auto &buffer = pixmap->buffer();
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if (buffer.isNull()) {
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const auto &fbo = pixmap->fbo();
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if (!fbo.isNull()) {
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if (m_texture != fbo->texture()) {
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updateFromFBO(fbo);
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}
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return;
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}
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return;
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}
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auto s = pixmap->surface();
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if (!buffer->shmBuffer()) {
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q->bind();
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EGLImageKHR image = attach(buffer);
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q->unbind();
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if (image != EGL_NO_IMAGE_KHR) {
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eglDestroyImageKHR(m_backend->eglDisplay(), m_image);
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m_image = image;
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}
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if (s) {
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s->resetTrackedDamage();
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}
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return;
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}
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// shm fallback
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const QImage &image = buffer->data();
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if (image.isNull() || !s) {
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return;
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}
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Q_ASSERT(image.size() == m_size);
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q->bind();
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const QRegion damage = s->trackedDamage();
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s->resetTrackedDamage();
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// TODO: this should be shared with GLTexture::update
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if (GLPlatform::instance()->isGLES()) {
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if (s_supportsARGB32 && (image.format() == QImage::Format_ARGB32 || image.format() == QImage::Format_ARGB32_Premultiplied)) {
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const QImage im = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
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for (const QRect &rect : damage.rects()) {
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glTexSubImage2D(m_target, 0, rect.x(), rect.y(), rect.width(), rect.height(),
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GL_BGRA_EXT, GL_UNSIGNED_BYTE, im.copy(rect).bits());
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}
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} else {
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const QImage im = image.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
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for (const QRect &rect : damage.rects()) {
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glTexSubImage2D(m_target, 0, rect.x(), rect.y(), rect.width(), rect.height(),
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GL_RGBA, GL_UNSIGNED_BYTE, im.copy(rect).bits());
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}
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}
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} else {
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const QImage im = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
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for (const QRect &rect : damage.rects()) {
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glTexSubImage2D(m_target, 0, rect.x(), rect.y(), rect.width(), rect.height(),
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GL_BGRA, GL_UNSIGNED_BYTE, im.copy(rect).bits());
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}
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}
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q->unbind();
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}
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bool AbstractEglTexture::loadShmTexture(const QPointer< KWayland::Server::BufferInterface > &buffer)
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{
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const QImage &image = buffer->data();
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if (image.isNull()) {
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return false;
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}
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glGenTextures(1, &m_texture);
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q->setWrapMode(GL_CLAMP_TO_EDGE);
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q->setFilter(GL_LINEAR);
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q->bind();
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const QSize &size = image.size();
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// TODO: this should be shared with GLTexture(const QImage&, GLenum)
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GLenum format = 0;
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switch (image.format()) {
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case QImage::Format_ARGB32:
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case QImage::Format_ARGB32_Premultiplied:
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format = GL_RGBA8;
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break;
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case QImage::Format_RGB32:
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format = GL_RGB8;
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break;
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default:
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return false;
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}
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if (GLPlatform::instance()->isGLES()) {
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if (s_supportsARGB32 && format == GL_RGBA8) {
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const QImage im = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
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glTexImage2D(m_target, 0, GL_BGRA_EXT, im.width(), im.height(),
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0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, im.bits());
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} else {
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const QImage im = image.convertToFormat(QImage::Format_RGBA8888_Premultiplied);
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glTexImage2D(m_target, 0, GL_RGBA, im.width(), im.height(),
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0, GL_RGBA, GL_UNSIGNED_BYTE, im.bits());
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}
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} else {
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glTexImage2D(m_target, 0, format, size.width(), size.height(), 0,
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GL_BGRA, GL_UNSIGNED_BYTE, image.bits());
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}
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q->unbind();
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q->setYInverted(true);
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m_size = size;
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updateMatrix();
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return true;
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}
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bool AbstractEglTexture::loadEglTexture(const QPointer< KWayland::Server::BufferInterface > &buffer)
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{
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if (!eglQueryWaylandBufferWL) {
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return false;
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}
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if (!buffer->resource()) {
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return false;
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}
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glGenTextures(1, &m_texture);
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q->setWrapMode(GL_CLAMP_TO_EDGE);
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q->setFilter(GL_LINEAR);
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q->bind();
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m_image = attach(buffer);
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q->unbind();
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if (EGL_NO_IMAGE_KHR == m_image) {
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qCDebug(KWIN_CORE) << "failed to create egl image";
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q->discard();
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return false;
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}
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return true;
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}
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EGLImageKHR AbstractEglTexture::attach(const QPointer< KWayland::Server::BufferInterface > &buffer)
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{
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EGLint format, yInverted;
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eglQueryWaylandBufferWL(m_backend->eglDisplay(), buffer->resource(), EGL_TEXTURE_FORMAT, &format);
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if (format != EGL_TEXTURE_RGB && format != EGL_TEXTURE_RGBA) {
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qCDebug(KWIN_CORE) << "Unsupported texture format: " << format;
|
|
return EGL_NO_IMAGE_KHR;
|
|
}
|
|
if (!eglQueryWaylandBufferWL(m_backend->eglDisplay(), buffer->resource(), EGL_WAYLAND_Y_INVERTED_WL, &yInverted)) {
|
|
// if EGL_WAYLAND_Y_INVERTED_WL is not supported wl_buffer should be treated as if value were EGL_TRUE
|
|
yInverted = EGL_TRUE;
|
|
}
|
|
|
|
const EGLint attribs[] = {
|
|
EGL_WAYLAND_PLANE_WL, 0,
|
|
EGL_NONE
|
|
};
|
|
EGLImageKHR image = eglCreateImageKHR(m_backend->eglDisplay(), EGL_NO_CONTEXT, EGL_WAYLAND_BUFFER_WL,
|
|
(EGLClientBuffer)buffer->resource(), attribs);
|
|
if (image != EGL_NO_IMAGE_KHR) {
|
|
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
|
|
m_size = buffer->size();
|
|
updateMatrix();
|
|
q->setYInverted(yInverted);
|
|
}
|
|
return image;
|
|
}
|
|
|
|
bool AbstractEglTexture::updateFromFBO(const QSharedPointer<QOpenGLFramebufferObject> &fbo)
|
|
{
|
|
if (fbo.isNull()) {
|
|
return false;
|
|
}
|
|
m_texture = fbo->texture();
|
|
m_size = fbo->size();
|
|
q->setWrapMode(GL_CLAMP_TO_EDGE);
|
|
q->setFilter(GL_LINEAR);
|
|
q->setYInverted(false);
|
|
updateMatrix();
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|