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122 lines
3.3 KiB
C++
122 lines
3.3 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 "scene_qpainter_drm_backend.h"
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#include "drm_backend.h"
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#include "virtual_terminal.h"
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namespace KWin
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{
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DrmQPainterBackend::DrmQPainterBackend(DrmBackend *backend)
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: QObject()
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, QPainterBackend()
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, m_backend(backend)
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{
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const auto outputs = m_backend->outputs();
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for (auto output: outputs) {
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initOutput(output);
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}
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connect(m_backend, &DrmBackend::outputAdded, this, &DrmQPainterBackend::initOutput);
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connect(m_backend, &DrmBackend::outputRemoved, this,
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[this] (DrmOutput *o) {
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auto it = std::find_if(m_outputs.begin(), m_outputs.end(),
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[o] (const Output &output) {
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return output.output == o;
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}
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);
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if (it == m_outputs.end()) {
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return;
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}
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delete (*it).buffer[0];
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delete (*it).buffer[1];
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m_outputs.erase(it);
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}
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);
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}
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DrmQPainterBackend::~DrmQPainterBackend()
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{
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for (auto it = m_outputs.begin(); it != m_outputs.end(); ++it) {
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delete (*it).buffer[0];
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delete (*it).buffer[1];
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}
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}
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void DrmQPainterBackend::initOutput(DrmOutput *output)
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{
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Output o;
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auto initBuffer = [&o, output, this] (int index) {
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o.buffer[index] = m_backend->createBuffer(output->size());
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o.buffer[index]->map();
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o.buffer[index]->image()->fill(Qt::black);
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};
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initBuffer(0);
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initBuffer(1);
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o.output = output;
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m_outputs << o;
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}
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QImage *DrmQPainterBackend::buffer()
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{
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return bufferForScreen(0);
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}
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QImage *DrmQPainterBackend::bufferForScreen(int screenId)
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{
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const Output &o = m_outputs.at(screenId);
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return o.buffer[o.index]->image();
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}
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bool DrmQPainterBackend::needsFullRepaint() const
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{
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return true;
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}
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void DrmQPainterBackend::prepareRenderingFrame()
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{
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for (auto it = m_outputs.begin(); it != m_outputs.end(); ++it) {
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(*it).index = ((*it).index + 1) % 2;
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}
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}
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void DrmQPainterBackend::present(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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if (!VirtualTerminal::self()->isActive()) {
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return;
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}
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for (auto it = m_outputs.begin(); it != m_outputs.end(); ++it) {
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const Output &o = *it;
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m_backend->present(o.buffer[o.index], o.output);
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}
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}
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bool DrmQPainterBackend::usesOverlayWindow() const
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{
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return false;
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}
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bool DrmQPainterBackend::perScreenRendering() const
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{
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return true;
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}
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} |