aaf8ce16df
Summary: If the format of the framebuffer is BGR we cannot create an RGB image format from it - the rendering is incorrect. Unfortunately QImage does not support a BGR image format. To solve this problem we still use an RGB image format but on rendering the front buffer is rgbSwapped to convert the RGB image to a BGR image. BUG: 365243 FIXED-IN: 5.7.2 Test Plan: Tested on a neon kvm Reviewers: #kwin, #plasma_on_wayland Subscribers: plasma-devel, kwin Tags: #plasma_on_wayland, #kwin Differential Revision: https://phabricator.kde.org/D2134
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#include "scene_qpainter_fb_backend.h"
|
|
#include "fb_backend.h"
|
|
#include "composite.h"
|
|
#include "cursor.h"
|
|
#include "virtual_terminal.h"
|
|
// Qt
|
|
#include <QPainter>
|
|
|
|
namespace KWin
|
|
{
|
|
FramebufferQPainterBackend::FramebufferQPainterBackend(FramebufferBackend *backend)
|
|
: QObject()
|
|
, QPainterBackend()
|
|
, m_renderBuffer(backend->size(), QImage::Format_RGB32)
|
|
, m_backend(backend)
|
|
{
|
|
m_renderBuffer.fill(Qt::black);
|
|
|
|
m_backend->map();
|
|
|
|
m_backBuffer = QImage((uchar*)backend->mappedMemory(),
|
|
backend->bytesPerLine() / (backend->bitsPerPixel() / 8),
|
|
backend->bufferSize() / backend->bytesPerLine(),
|
|
backend->bytesPerLine(), backend->imageFormat());
|
|
|
|
m_backBuffer.fill(Qt::black);
|
|
connect(VirtualTerminal::self(), &VirtualTerminal::activeChanged, this,
|
|
[this] (bool active) {
|
|
if (active) {
|
|
Compositor::self()->bufferSwapComplete();
|
|
Compositor::self()->addRepaintFull();
|
|
} else {
|
|
Compositor::self()->aboutToSwapBuffers();
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
FramebufferQPainterBackend::~FramebufferQPainterBackend() = default;
|
|
|
|
QImage *FramebufferQPainterBackend::buffer()
|
|
{
|
|
return &m_renderBuffer;
|
|
}
|
|
|
|
bool FramebufferQPainterBackend::needsFullRepaint() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
void FramebufferQPainterBackend::prepareRenderingFrame()
|
|
{
|
|
}
|
|
|
|
void FramebufferQPainterBackend::present(int mask, const QRegion &damage)
|
|
{
|
|
Q_UNUSED(mask)
|
|
Q_UNUSED(damage)
|
|
if (!VirtualTerminal::self()->isActive()) {
|
|
return;
|
|
}
|
|
QPainter p(&m_backBuffer);
|
|
p.drawImage(QPoint(0, 0), m_backend->isBGR() ? m_renderBuffer.rgbSwapped() : m_renderBuffer);
|
|
}
|
|
|
|
bool FramebufferQPainterBackend::usesOverlayWindow() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
}
|