7c8c1dac0a
For each DrmOutput a gbm_surface and EglSurface is created. When rendering per screen the context is made current on each of the surfaces. Note: viewport handling needs to be improved by e.g. passing through the scene to restore to correct viewport after dropping an FBO. Furthermore it seems like buffer age is not working correctly in this setup (not overly surprising). Dynamic changes are not yet supported.
390 lines
12 KiB
C++
390 lines
12 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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#if HAVE_WAYLAND
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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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#endif
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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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namespace KWin
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{
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#if HAVE_WAYLAND
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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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#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::cleanup()
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{
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#if HAVE_WAYLAND
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if (eglUnbindWaylandDisplayWL && eglDisplay() != EGL_NO_DISPLAY) {
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eglUnbindWaylandDisplayWL(eglDisplay(), *(WaylandServer::self()->display()));
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}
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#endif
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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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eglTerminate(m_display);
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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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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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#ifdef KWIN_HAVE_OPENGLES
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eglBindAPI(EGL_OPENGL_ES_API);
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#else
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if (eglBindAPI(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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#endif
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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 HAVE_WAYLAND
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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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if (!eglBindWaylandDisplayWL(eglDisplay(), *(WaylandServer::self()->display()))) {
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eglUnbindWaylandDisplayWL = nullptr;
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eglQueryWaylandBufferWL = nullptr;
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}
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}
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#endif
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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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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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{
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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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#if HAVE_WAYLAND
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const auto &buffer = pixmap->buffer();
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if (buffer.isNull()) {
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// try X11 loading
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return loadTexture(pixmap->pixmap(), pixmap->toplevel()->size());
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}
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// try Wayland loading
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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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#else
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return loadTexture(pixmap->pixmap(), pixmap->toplevel()->size());
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#endif
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}
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bool AbstractEglTexture::loadTexture(xcb_pixmap_t pix, const QSize &size)
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{
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if (pix == XCB_NONE)
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return false;
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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 EGLint attribs[] = {
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EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
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EGL_NONE
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};
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m_image = eglCreateImageKHR(m_backend->eglDisplay(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR,
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(EGLClientBuffer)pix, attribs);
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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->unbind();
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q->discard();
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return false;
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}
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)m_image);
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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::updateTexture(WindowPixmap *pixmap)
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{
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#if HAVE_WAYLAND
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const auto &buffer = pixmap->buffer();
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if (buffer.isNull()) {
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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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eglDestroyImageKHR(m_backend->eglDisplay(), m_image);
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m_image = image;
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}
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return;
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}
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// shm fallback
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if (GLPlatform::instance()->isGLES()) {
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// FIXME
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return;
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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;
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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 = pixmap->toplevel()->damage();
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// TODO: this should be shared with GLTexture::update
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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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q->unbind();
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#endif
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}
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#if HAVE_WAYLAND
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bool AbstractEglTexture::loadShmTexture(const QPointer< KWayland::Server::BufferInterface > &buffer)
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{
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if (GLPlatform::instance()->isGLES()) {
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// FIXME
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return false;
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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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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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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, width, height, 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;
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return EGL_NO_IMAGE_KHR;
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}
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eglQueryWaylandBufferWL(m_backend->eglDisplay(), buffer->resource(), EGL_WAYLAND_Y_INVERTED_WL, &yInverted);
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eglQueryWaylandBufferWL(m_backend->eglDisplay(), buffer->resource(), EGL_WIDTH, &width);
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eglQueryWaylandBufferWL(m_backend->eglDisplay(), buffer->resource(), EGL_HEIGHT, &height);
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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 = QSize(width, height);
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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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#endif
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}
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