kwin/plugins/platforms/drm/gbm_surface.h
David Edmundson 3d619c995b Fix DRM EGL crash regression
Summary:
In 47343fb we made GBM buffer shared.

What we wanted to do was:
Unbox the shared_pointer<GBMSurface> to give us a GBMSurface* object
Call the gbm_surface*() on that operator
Then cast that to a void* for eglCreatePlatformWindowSurfaceEXT

What we did:
Cast the std::shared_ptr<GBMSurface> to a gbm_surface*  then cast that
to void*.
This is just a garbage value and it crashes in Mesa when we do our first
paint.

I've replaced that with an explicit method then we can use shared_ptr's
-> operator rather than get() which does the right thing in a readable
way.

Test Plan:
It crashed after rebasing to master (for Aleix too)
No longer crashes

Reviewers: #plasma

Subscribers: plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8251
2017-10-11 20:04:13 +02:00

55 lines
1.4 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2017 Martin Flöser <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/>.
*********************************************************************/
#ifndef KWIN_DRM_GBM_SURFACE_H
#define KWIN_DRM_GBM_SURFACE_H
#include <stdint.h>
struct gbm_bo;
struct gbm_device;
struct gbm_surface;
namespace KWin
{
class GbmSurface
{
public:
explicit GbmSurface(gbm_device *gbm, uint32_t width, uint32_t height, uint32_t format, uint32_t flags);
~GbmSurface();
gbm_bo *lockFrontBuffer();
void releaseBuffer(gbm_bo *bo);
operator bool() const {
return m_surface != nullptr;
}
gbm_surface* surface() const {
return m_surface;
}
private:
gbm_surface *m_surface;
};
}
#endif