f26eeb9706
Currently, the OpenGLBackend and the QPainterBackend have hooks to indicate the start and the end of compositing cycle, but in both cases, the hooks have different names. This change fixes that inconsistency.
89 lines
2.4 KiB
C++
89 lines
2.4 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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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "scene_qpainter_x11_backend.h"
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#include "x11windowed_backend.h"
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#include "screens.h"
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namespace KWin
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{
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X11WindowedQPainterBackend::X11WindowedQPainterBackend(X11WindowedBackend *backend)
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: QPainterBackend()
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, m_backend(backend)
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{
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connect(screens(), &Screens::changed, this, &X11WindowedQPainterBackend::createOutputs);
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createOutputs();
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}
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X11WindowedQPainterBackend::~X11WindowedQPainterBackend()
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{
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qDeleteAll(m_outputs);
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if (m_gc) {
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xcb_free_gc(m_backend->connection(), m_gc);
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}
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}
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void X11WindowedQPainterBackend::createOutputs()
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{
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qDeleteAll(m_outputs);
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m_outputs.clear();
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for (int i = 0; i < screens()->count(); ++i) {
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Output *output = new Output;
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output->window = m_backend->windowForScreen(i);
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output->buffer = QImage(screens()->size(i) * screens()->scale(i), QImage::Format_RGB32);
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output->buffer.fill(Qt::black);
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m_outputs << output;
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}
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}
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QImage *X11WindowedQPainterBackend::bufferForScreen(int screen)
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{
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return &m_outputs.at(screen)->buffer;
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}
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bool X11WindowedQPainterBackend::needsFullRepaint(int screenId) const
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{
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const Output *rendererOutput = m_outputs.value(screenId);
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Q_ASSERT(rendererOutput);
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return rendererOutput->needsFullRepaint;
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}
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void X11WindowedQPainterBackend::beginFrame(int screenId)
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{
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Q_UNUSED(screenId)
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}
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void X11WindowedQPainterBackend::endFrame(int screenId, int mask, const QRegion &damage)
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{
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Q_UNUSED(mask)
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Q_UNUSED(damage)
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xcb_connection_t *c = m_backend->connection();
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const xcb_window_t window = m_backend->window();
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if (m_gc == XCB_NONE) {
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m_gc = xcb_generate_id(c);
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xcb_create_gc(c, m_gc, window, 0, nullptr);
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}
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Output *rendererOutput = m_outputs.value(screenId);
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Q_ASSERT(rendererOutput);
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// TODO: only update changes?
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const QImage &buffer = rendererOutput->buffer;
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xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, rendererOutput->window,
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m_gc, buffer.width(), buffer.height(), 0, 0, 0, 24,
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buffer.sizeInBytes(), buffer.constBits());
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rendererOutput->needsFullRepaint = false;
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}
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bool X11WindowedQPainterBackend::perScreenRendering() const
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{
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return true;
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}
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}
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