2020-08-02 22:22:19 +00:00
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/*
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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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2015-05-05 11:32:33 +00:00
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2020-08-02 22:22:19 +00:00
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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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2015-05-05 11:32:33 +00:00
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2020-08-02 22:22:19 +00:00
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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2015-05-05 11:32:33 +00:00
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#include "scene_qpainter_drm_backend.h"
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#include "drm_backend.h"
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2016-03-21 14:11:17 +00:00
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#include "drm_output.h"
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2020-10-05 21:05:55 +00:00
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#include "drm_gpu.h"
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2020-11-29 11:24:38 +00:00
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#include "renderloop_p.h"
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2015-05-05 11:32:33 +00:00
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namespace KWin
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{
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2020-10-05 21:05:55 +00:00
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DrmQPainterBackend::DrmQPainterBackend(DrmBackend *backend, DrmGpu *gpu)
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2015-05-05 11:32:33 +00:00
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: QObject()
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, QPainterBackend()
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, m_backend(backend)
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2020-10-05 21:05:55 +00:00
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, m_gpu(gpu)
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2015-05-05 11:32:33 +00:00
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{
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2018-03-28 23:27:21 +00:00
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const auto outputs = m_backend->drmOutputs();
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2015-05-05 11:32:33 +00:00
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for (auto output: outputs) {
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initOutput(output);
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}
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2021-01-27 17:29:56 +00:00
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connect(m_gpu, &DrmGpu::outputEnabled, this, &DrmQPainterBackend::initOutput);
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2020-10-05 21:05:55 +00:00
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connect(m_gpu, &DrmGpu::outputDisabled, this,
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2015-05-05 11:32:33 +00:00
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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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m_outputs.erase(it);
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}
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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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2021-03-22 14:46:09 +00:00
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o.buffer[index] = QSharedPointer<DrmDumbBuffer>::create(m_gpu->fd(), output->pixelSize());
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2020-07-10 02:30:24 +00:00
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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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2015-05-05 11:32:33 +00:00
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};
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2017-10-21 13:16:41 +00:00
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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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auto initBuffer = [it, output, this] (int index) {
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2021-03-22 14:46:09 +00:00
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it->buffer[index] = QSharedPointer<DrmDumbBuffer>::create(m_gpu->fd(), output->pixelSize());
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2020-07-29 12:35:50 +00:00
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if (it->buffer[index]->map()) {
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2020-07-10 02:30:24 +00:00
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it->buffer[index]->image()->fill(Qt::black);
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}
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2017-10-21 13:16:41 +00:00
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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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2015-05-05 11:32:33 +00:00
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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::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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2020-11-09 13:35:15 +00:00
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bool DrmQPainterBackend::needsFullRepaint(int screenId) const
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2015-05-05 11:32:33 +00:00
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{
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2020-11-09 13:35:15 +00:00
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Q_UNUSED(screenId)
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2015-05-05 11:32:33 +00:00
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return true;
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}
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2020-11-09 14:31:26 +00:00
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void DrmQPainterBackend::beginFrame(int screenId)
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2015-05-05 11:32:33 +00:00
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{
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2020-11-09 13:35:15 +00:00
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Output &rendererOutput = m_outputs[screenId];
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rendererOutput.index = (rendererOutput.index + 1) % 2;
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2015-05-05 11:32:33 +00:00
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}
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2020-11-09 14:31:26 +00:00
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void DrmQPainterBackend::endFrame(int screenId, int mask, const QRegion &damage)
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2015-05-05 11:32:33 +00:00
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{
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Q_UNUSED(mask)
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Q_UNUSED(damage)
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2020-11-09 13:35:15 +00:00
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const Output &rendererOutput = m_outputs[screenId];
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2020-11-29 11:24:38 +00:00
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DrmOutput *drmOutput = rendererOutput.output;
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2021-03-20 18:18:52 +00:00
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if (!drmOutput->present(rendererOutput.buffer[rendererOutput.index])) {
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2020-11-29 11:24:38 +00:00
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RenderLoopPrivate *renderLoopPrivate = RenderLoopPrivate::get(drmOutput->renderLoop());
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renderLoopPrivate->notifyFrameFailed();
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}
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2015-05-05 11:32:33 +00:00
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}
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2016-03-21 14:11:17 +00:00
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}
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