efedddd905
Split off GBM based buffers to a separate file, which gets only included, when GBM is available. Note, that this also removes the gbmCallback, since already before this patch we did delete the buffers always without it. The plan is to later use this file for via GBM directly imported Wayland buffers as well. Test Plan: Tested with Gl and QPainter backends. Reviewers: #kwin Subscribers: kwin, #kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D5179
107 lines
3.1 KiB
C++
107 lines
3.1 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 "drm_buffer.h"
|
|
#include "drm_backend.h"
|
|
|
|
#include "logging.h"
|
|
|
|
// system
|
|
#include <sys/mman.h>
|
|
#include <errno.h>
|
|
// drm
|
|
#include <xf86drm.h>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
DrmBuffer:: DrmBuffer(DrmBackend *backend)
|
|
: m_backend(backend)
|
|
{
|
|
}
|
|
|
|
// DrmDumbBuffer
|
|
DrmDumbBuffer::DrmDumbBuffer(DrmBackend *backend, const QSize &size)
|
|
: DrmBuffer(backend)
|
|
{
|
|
m_size = size;
|
|
drm_mode_create_dumb createArgs;
|
|
memset(&createArgs, 0, sizeof createArgs);
|
|
createArgs.bpp = 32;
|
|
createArgs.width = size.width();
|
|
createArgs.height = size.height();
|
|
if (drmIoctl(m_backend->fd(), DRM_IOCTL_MODE_CREATE_DUMB, &createArgs) != 0) {
|
|
qCWarning(KWIN_DRM) << "DRM_IOCTL_MODE_CREATE_DUMB failed";
|
|
return;
|
|
}
|
|
m_handle = createArgs.handle;
|
|
m_bufferSize = createArgs.size;
|
|
m_stride = createArgs.pitch;
|
|
if (drmModeAddFB(m_backend->fd(), size.width(), size.height(), 24, 32,
|
|
m_stride, createArgs.handle, &m_bufferId) != 0) {
|
|
qCWarning(KWIN_DRM) << "drmModeAddFB failed with errno" << errno;
|
|
}
|
|
}
|
|
|
|
DrmDumbBuffer::~DrmDumbBuffer()
|
|
{
|
|
if (m_bufferId) {
|
|
drmModeRmFB(m_backend->fd(), m_bufferId);
|
|
}
|
|
|
|
delete m_image;
|
|
if (m_memory) {
|
|
munmap(m_memory, m_bufferSize);
|
|
}
|
|
if (m_handle) {
|
|
drm_mode_destroy_dumb destroyArgs;
|
|
destroyArgs.handle = m_handle;
|
|
drmIoctl(m_backend->fd(), DRM_IOCTL_MODE_DESTROY_DUMB, &destroyArgs);
|
|
}
|
|
}
|
|
|
|
bool DrmDumbBuffer::needsModeChange(DrmBuffer *b) const {
|
|
if (DrmDumbBuffer *db = dynamic_cast<DrmDumbBuffer*>(b)) {
|
|
return m_stride != db->stride();
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool DrmDumbBuffer::map(QImage::Format format)
|
|
{
|
|
if (!m_handle || !m_bufferId) {
|
|
return false;
|
|
}
|
|
drm_mode_map_dumb mapArgs;
|
|
memset(&mapArgs, 0, sizeof mapArgs);
|
|
mapArgs.handle = m_handle;
|
|
if (drmIoctl(m_backend->fd(), DRM_IOCTL_MODE_MAP_DUMB, &mapArgs) != 0) {
|
|
return false;
|
|
}
|
|
void *address = mmap(nullptr, m_bufferSize, PROT_WRITE, MAP_SHARED, m_backend->fd(), mapArgs.offset);
|
|
if (address == MAP_FAILED) {
|
|
return false;
|
|
}
|
|
m_memory = address;
|
|
m_image = new QImage((uchar*)m_memory, m_size.width(), m_size.height(), m_stride, format);
|
|
return !m_image->isNull();
|
|
}
|
|
|
|
}
|