77b5c3caa9
Summary: A preparation step to support rotation of outputs. The idea is to rotate using DRM directly and not add it to the compositors. With this change and a small hack to try it, I was able to rotate the screen. Reviewers: #kwin, #plasma, subdiff Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D8582
157 lines
4 KiB
C++
157 lines
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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Copyright (C) 2016 Roman Gilg <subdiff@gmail.com>
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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 "drm_object_plane.h"
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#include "drm_backend.h"
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#include "drm_buffer.h"
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#include "drm_pointer.h"
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#include "logging.h"
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namespace KWin
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{
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DrmPlane::DrmPlane(uint32_t plane_id, DrmBackend *backend)
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: DrmObject(plane_id, backend)
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{
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}
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DrmPlane::~DrmPlane()
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{
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delete m_current;
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delete m_next;
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}
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bool DrmPlane::atomicInit()
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{
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qCDebug(KWIN_DRM) << "Atomic init for plane:" << m_id;
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ScopedDrmPointer<_drmModePlane, &drmModeFreePlane> p(drmModeGetPlane(m_backend->fd(), m_id));
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if (!p) {
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qCWarning(KWIN_DRM) << "Failed to get kernel plane" << m_id;
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return false;
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}
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m_possibleCrtcs = p->possible_crtcs;
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int count_formats = p->count_formats;
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m_formats.resize(count_formats);
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for (int i = 0; i < count_formats; i++) {
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m_formats[i] = p->formats[i];
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}
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if (!initProps()) {
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return false;
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}
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return true;
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}
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bool DrmPlane::initProps()
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{
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m_propsNames = {
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QByteArrayLiteral("type"),
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QByteArrayLiteral("SRC_X"),
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QByteArrayLiteral("SRC_Y"),
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QByteArrayLiteral("SRC_W"),
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QByteArrayLiteral("SRC_H"),
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QByteArrayLiteral("CRTC_X"),
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QByteArrayLiteral("CRTC_Y"),
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QByteArrayLiteral("CRTC_W"),
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QByteArrayLiteral("CRTC_H"),
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QByteArrayLiteral("FB_ID"),
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QByteArrayLiteral("CRTC_ID"),
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QByteArrayLiteral("rotation")
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};
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QVector<QByteArray> typeNames = {
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QByteArrayLiteral("Primary"),
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QByteArrayLiteral("Cursor"),
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QByteArrayLiteral("Overlay"),
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};
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drmModeObjectProperties *properties = drmModeObjectGetProperties(m_backend->fd(), m_id, DRM_MODE_OBJECT_PLANE);
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if (!properties){
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qCWarning(KWIN_DRM) << "Failed to get properties for plane " << m_id ;
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return false;
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}
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int propCount = int(PropertyIndex::Count);
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for (int j = 0; j < propCount; ++j) {
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if (j == int(PropertyIndex::Type)) {
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initProp(j, properties, typeNames);
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} else {
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initProp(j, properties);
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}
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}
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drmModeFreeObjectProperties(properties);
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return true;
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}
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DrmPlane::TypeIndex DrmPlane::type()
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{
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uint64_t v = value(int(PropertyIndex::Type));
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int typeCount = int(TypeIndex::Count);
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for (int i = 0; i < typeCount; i++) {
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if (m_props[int(PropertyIndex::Type)]->enumMap(i) == v) {
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return TypeIndex(i);
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}
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}
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return TypeIndex::Overlay;
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}
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void DrmPlane::setNext(DrmBuffer *b){
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setValue(int(PropertyIndex::FbId), b ? b->bufferId() : 0);
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m_next = b;
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}
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void DrmPlane::setTransformation(Transformations t)
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{
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setValue(int(PropertyIndex::Rotation), int(t));
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}
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bool DrmPlane::atomicPopulate(drmModeAtomicReq *req)
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{
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bool ret = true;
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for (int i = 1; i < m_props.size(); i++) {
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ret &= atomicAddProperty(req, i, m_props[i]->value());
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}
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if (!ret) {
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qCWarning(KWIN_DRM) << "Failed to populate atomic plane" << m_id;
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return false;
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}
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return true;
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}
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void DrmPlane::flipBuffer()
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{
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m_current = m_next;
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m_next = nullptr;
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}
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void DrmPlane::flipBufferWithDelete()
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{
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if (m_current != m_next) {
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delete m_current;
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}
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flipBuffer();
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}
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}
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