de2c4cb4ac
The wp_viewporter compositor extension allows clients to crop and scale their surfaces. It can be especially useful for applications wishing to reduce their power consumption, e.g. video players, etc. Given that there is no any direct relationship between the surface size and the buffer size anymore, we have to use specialized helper methods for converting coordinates from the surface-local space to buffer pixel space and vice versa.
633 lines
21 KiB
C++
633 lines
21 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 "egl_dmabuf.h"
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#include "kwineglext.h"
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#include "texture.h"
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#include "composite.h"
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#include "egl_context_attribute_builder.h"
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#include "options.h"
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#include "platform.h"
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#include "scene.h"
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#include "wayland_server.h"
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#include <KWaylandServer/buffer_interface.h>
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#include <KWaylandServer/display.h>
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#include <KWaylandServer/surface_interface.h>
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// kwin libs
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#include <logging.h>
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#include <kwinglplatform.h>
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#include <kwinglutils.h>
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// Qt
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#include <QOpenGLContext>
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#include <QOpenGLFramebufferObject>
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#include <memory>
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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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AbstractEglBackend::AbstractEglBackend()
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: QObject(nullptr)
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, OpenGLBackend()
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{
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connect(Compositor::self(), &Compositor::aboutToDestroy, this, &AbstractEglBackend::unbindWaylandDisplay);
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}
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AbstractEglBackend::~AbstractEglBackend()
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{
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delete m_dmaBuf;
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}
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void AbstractEglBackend::unbindWaylandDisplay()
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{
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if (eglUnbindWaylandDisplayWL && m_display != EGL_NO_DISPLAY) {
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eglUnbindWaylandDisplayWL(m_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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kwinApp()->platform()->setSceneEglContext(EGL_NO_CONTEXT);
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kwinApp()->platform()->setSceneEglSurface(EGL_NO_SURFACE);
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kwinApp()->platform()->setSceneEglConfig(nullptr);
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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_OPENGL) << "eglInitialize failed";
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EGLint error = eglGetError();
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if (error != EGL_SUCCESS) {
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qCWarning(KWIN_OPENGL) << "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_OPENGL) << "Error during eglInitialize " << error;
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return false;
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}
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qCDebug(KWIN_OPENGL) << "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_OPENGL) << "bind OpenGL API failed";
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return false;
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}
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qCDebug(KWIN_OPENGL) << "EGL version: " << major << "." << minor;
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const QByteArray eglExtensions = eglQueryString(m_display, EGL_EXTENSIONS);
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setExtensions(eglExtensions.split(' '));
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return true;
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}
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typedef void (*eglFuncPtr)();
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static eglFuncPtr getProcAddress(const char* name)
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{
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return eglGetProcAddress(name);
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}
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void AbstractEglBackend::initKWinGL()
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{
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GLPlatform *glPlatform = GLPlatform::instance();
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glPlatform->detect(EglPlatformInterface);
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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(&getProcAddress);
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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 (hasExtension(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 (hasExtension(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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Q_ASSERT(!m_dmaBuf);
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m_dmaBuf = EglDmabuf::factory(this);
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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 bool haveRobustness = hasExtension(QByteArrayLiteral("EGL_EXT_create_context_robustness"));
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const bool haveCreateContext = hasExtension(QByteArrayLiteral("EGL_KHR_create_context"));
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const bool haveContextPriority = hasExtension(QByteArrayLiteral("EGL_IMG_context_priority"));
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std::vector<std::unique_ptr<AbstractOpenGLContextAttributeBuilder>> candidates;
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if (isOpenGLES()) {
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if (haveCreateContext && haveRobustness && haveContextPriority) {
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auto glesRobustPriority = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglOpenGLESContextAttributeBuilder);
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glesRobustPriority->setVersion(2);
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glesRobustPriority->setRobust(true);
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glesRobustPriority->setHighPriority(true);
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candidates.push_back(std::move(glesRobustPriority));
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}
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if (haveCreateContext && haveRobustness) {
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auto glesRobust = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglOpenGLESContextAttributeBuilder);
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glesRobust->setVersion(2);
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glesRobust->setRobust(true);
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candidates.push_back(std::move(glesRobust));
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}
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if (haveContextPriority) {
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auto glesPriority = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglOpenGLESContextAttributeBuilder);
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glesPriority->setVersion(2);
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glesPriority->setHighPriority(true);
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candidates.push_back(std::move(glesPriority));
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}
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auto gles = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglOpenGLESContextAttributeBuilder);
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gles->setVersion(2);
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candidates.push_back(std::move(gles));
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} else {
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if (options->glCoreProfile() && haveCreateContext) {
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if (haveRobustness && haveContextPriority) {
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auto robustCorePriority = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglContextAttributeBuilder);
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robustCorePriority->setVersion(3, 1);
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robustCorePriority->setRobust(true);
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robustCorePriority->setHighPriority(true);
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candidates.push_back(std::move(robustCorePriority));
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}
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if (haveRobustness) {
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auto robustCore = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglContextAttributeBuilder);
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robustCore->setVersion(3, 1);
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robustCore->setRobust(true);
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candidates.push_back(std::move(robustCore));
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}
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if (haveContextPriority) {
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auto corePriority = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglContextAttributeBuilder);
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corePriority->setVersion(3, 1);
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corePriority->setHighPriority(true);
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candidates.push_back(std::move(corePriority));
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}
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auto core = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglContextAttributeBuilder);
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core->setVersion(3, 1);
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candidates.push_back(std::move(core));
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}
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if (haveRobustness && haveCreateContext && haveContextPriority) {
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auto robustPriority = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglContextAttributeBuilder);
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robustPriority->setRobust(true);
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robustPriority->setHighPriority(true);
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candidates.push_back(std::move(robustPriority));
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}
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if (haveRobustness && haveCreateContext) {
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auto robust = std::unique_ptr<AbstractOpenGLContextAttributeBuilder>(new EglContextAttributeBuilder);
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robust->setRobust(true);
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candidates.push_back(std::move(robust));
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}
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candidates.emplace_back(new EglContextAttributeBuilder);
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}
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EGLContext ctx = EGL_NO_CONTEXT;
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for (auto it = candidates.begin(); it != candidates.end(); it++) {
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const auto attribs = (*it)->build();
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ctx = eglCreateContext(m_display, config(), EGL_NO_CONTEXT, attribs.data());
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if (ctx != EGL_NO_CONTEXT) {
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qCDebug(KWIN_OPENGL) << "Created EGL context with attributes:" << (*it).get();
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break;
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}
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}
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if (ctx == EGL_NO_CONTEXT) {
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qCCritical(KWIN_OPENGL) << "Create Context failed";
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return false;
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}
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m_context = ctx;
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kwinApp()->platform()->setSceneEglContext(m_context);
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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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void AbstractEglBackend::setConfig(const EGLConfig &config)
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{
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m_config = config;
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kwinApp()->platform()->setSceneEglConfig(config);
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}
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void AbstractEglBackend::setSurface(const EGLSurface &surface)
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{
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m_surface = surface;
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kwinApp()->platform()->setSceneEglSurface(surface);
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}
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AbstractEglTexture::AbstractEglTexture(SceneOpenGLTexture *texture, AbstractEglBackend *backend)
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: SceneOpenGLTexturePrivate()
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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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// FIXME: Refactor this method.
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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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if (loadInternalImageObject(pixmap)) {
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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->linuxDmabufBuffer()) {
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return loadDmabufTexture(buffer);
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} else if (buffer->shmBuffer()) {
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return loadShmTexture(buffer);
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}
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return loadEglTexture(buffer);
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}
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void AbstractEglTexture::updateTexture(WindowPixmap *pixmap)
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{
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// FIXME: Refactor this method.
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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;
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}
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if (updateFromInternalImageObject(pixmap)) {
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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 (EglDmabufBuffer *dmabuf = static_cast<EglDmabufBuffer *>(buffer->linuxDmabufBuffer())) {
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q->bind();
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES) dmabuf->images()[0]); //TODO
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q->unbind();
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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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m_image = EGL_NO_IMAGE_KHR; // The wl_buffer has ownership of the image
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// The origin in a dmabuf-buffer is at the upper-left corner, so the meaning
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// of Y-inverted is the inverse of OpenGL.
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const bool yInverted = !(dmabuf->flags() & KWaylandServer::LinuxDmabufUnstableV1Interface::YInverted);
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if (m_size != dmabuf->size() || yInverted != q->isYInverted()) {
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m_size = dmabuf->size();
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q->setYInverted(yInverted);
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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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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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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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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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const QRegion damage = s->mapToBuffer(s->trackedDamage());
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s->resetTrackedDamage();
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// TODO: this should be shared with GLTexture::update
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createTextureSubImage(image, damage);
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}
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bool AbstractEglTexture::createTextureImage(const QImage &image)
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{
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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->setFilter(GL_LINEAR);
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q->setWrapMode(GL_CLAMP_TO_EDGE);
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const QSize &size = image.size();
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q->bind();
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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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void AbstractEglTexture::createTextureSubImage(const QImage &image, const QRegion &damage)
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{
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q->bind();
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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) {
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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) {
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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) {
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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< KWaylandServer::BufferInterface > &buffer)
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{
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return createTextureImage(buffer->data());
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}
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bool AbstractEglTexture::loadEglTexture(const QPointer< KWaylandServer::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_OPENGL) << "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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bool AbstractEglTexture::loadDmabufTexture(const QPointer< KWaylandServer::BufferInterface > &buffer)
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{
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auto *dmabuf = static_cast<EglDmabufBuffer *>(buffer->linuxDmabufBuffer());
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if (!dmabuf || dmabuf->images()[0] == EGL_NO_IMAGE_KHR) {
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qCritical(KWIN_OPENGL) << "Invalid dmabuf-based wl_buffer";
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q->discard();
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return false;
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}
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Q_ASSERT(m_image == EGL_NO_IMAGE_KHR);
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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_NEAREST);
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q->bind();
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES) dmabuf->images()[0]);
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q->unbind();
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m_size = dmabuf->size();
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q->setYInverted(!(dmabuf->flags() & KWaylandServer::LinuxDmabufUnstableV1Interface::YInverted));
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return true;
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}
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bool AbstractEglTexture::loadInternalImageObject(WindowPixmap *pixmap)
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{
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return createTextureImage(pixmap->internalImage());
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}
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EGLImageKHR AbstractEglTexture::attach(const QPointer< KWaylandServer::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_OPENGL) << "Unsupported texture format: " << format;
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return EGL_NO_IMAGE_KHR;
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}
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if (!eglQueryWaylandBufferWL(m_backend->eglDisplay(), buffer->resource(), EGL_WAYLAND_Y_INVERTED_WL, &yInverted)) {
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// if EGL_WAYLAND_Y_INVERTED_WL is not supported wl_buffer should be treated as if value were EGL_TRUE
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yInverted = EGL_TRUE;
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}
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const EGLint attribs[] = {
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EGL_WAYLAND_PLANE_WL, 0,
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EGL_NONE
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};
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EGLImageKHR image = eglCreateImageKHR(m_backend->eglDisplay(), EGL_NO_CONTEXT, EGL_WAYLAND_BUFFER_WL,
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(EGLClientBuffer)buffer->resource(), attribs);
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if (image != EGL_NO_IMAGE_KHR) {
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
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m_size = buffer->size();
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updateMatrix();
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q->setYInverted(yInverted);
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}
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return image;
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}
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bool AbstractEglTexture::updateFromFBO(const QSharedPointer<QOpenGLFramebufferObject> &fbo)
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{
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if (fbo.isNull()) {
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return false;
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}
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m_texture = fbo->texture();
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m_size = fbo->size();
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q->setWrapMode(GL_CLAMP_TO_EDGE);
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q->setFilter(GL_LINEAR);
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q->setYInverted(false);
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updateMatrix();
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return true;
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}
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static QRegion scale(const QRegion ®ion, qreal scaleFactor)
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{
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if (scaleFactor == 1) {
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return region;
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}
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QRegion scaled;
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for (const QRect &rect : region) {
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scaled += QRect(rect.topLeft() * scaleFactor, rect.size() * scaleFactor);
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}
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return scaled;
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}
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bool AbstractEglTexture::updateFromInternalImageObject(WindowPixmap *pixmap)
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{
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const QImage image = pixmap->internalImage();
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if (image.isNull()) {
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return false;
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}
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if (m_size != image.size()) {
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glDeleteTextures(1, &m_texture);
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return loadInternalImageObject(pixmap);
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}
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createTextureSubImage(image, scale(pixmap->toplevel()->damage(), image.devicePixelRatio()));
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return true;
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}
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}
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