138 lines
3.4 KiB
C++
138 lines
3.4 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_drm_backend.h"
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#include "drm_backend.h"
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#include "drm_output.h"
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#include "logind.h"
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#include "drm_gpu.h"
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namespace KWin
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{
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DrmQPainterBackend::DrmQPainterBackend(DrmBackend *backend, DrmGpu *gpu)
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: QObject()
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, QPainterBackend()
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, m_backend(backend)
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, m_gpu(gpu)
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{
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const auto outputs = m_backend->drmOutputs();
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for (auto output: outputs) {
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initOutput(output);
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}
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connect(m_gpu, &DrmGpu::outputAdded, this, &DrmQPainterBackend::initOutput);
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connect(m_gpu, &DrmGpu::outputDisabled, 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_gpu->createBuffer(output->pixelSize());
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if (o.buffer[index]->map()) {
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o.buffer[index]->image()->fill(Qt::black);
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}
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};
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connect(output, &DrmOutput::modeChanged, this,
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[output, this] {
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auto it = std::find_if(m_outputs.begin(), m_outputs.end(),
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[output] (const auto &o) {
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return o.output == output;
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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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auto initBuffer = [it, output, this] (int index) {
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it->buffer[index] = m_gpu->createBuffer(output->pixelSize());
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if (it->buffer[index]->map()) {
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it->buffer[index]->image()->fill(Qt::black);
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}
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};
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initBuffer(0);
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initBuffer(1);
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}
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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 (!LogindIntegration::self()->isActiveSession()) {
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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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}
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