Differential D5179 Diff 12846 plugins/platforms/drm/drm_buffer_gbm.h

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plugins/platforms/drm/drm_buffer_gbm.h

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		1		/********************************************************************
		2		KWin - the KDE window manager
		3		This file is part of the KDE project.
		4
		5		Copyright 2017 Roman Gilg <subdiff@gmail.com>
		6		Copyright 2015 Martin Gräßlin <mgraesslin@kde.org>
		7
		8		This program is free software; you can redistribute it and/or modify
		9		it under the terms of the GNU General Public License as published by
		10		the Free Software Foundation; either version 2 of the License, or
		11		(at your option) any later version.
		12
		13		This program is distributed in the hope that it will be useful,
		14		but WITHOUT ANY WARRANTY; without even the implied warranty of
		15		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		16		GNU General Public License for more details.
		17
		18		You should have received a copy of the GNU General Public License
		19		along with this program. If not, see <http://www.gnu.org/licenses/>.
		20		*********************************************************************/
		21		#ifndef KWIN_DRM_BUFFER_GBM_H
		22		#define KWIN_DRM_BUFFER_GBM_H
		23
		24		#include "drm_buffer.h"
		25
		26		struct gbm_bo;
		27		struct gbm_surface;
		28
		29		namespace KWin
		30		{
		31
		32		class DrmBackend;
		33
		34		class DrmSurfaceBuffer : public DrmBuffer
		35		{
		36		public:
		37		DrmSurfaceBuffer(DrmBackend backend, gbm_surface surface);
		38		~DrmSurfaceBuffer();
		39
		40		bool needsModeChange(DrmBuffer *b) const override {
		41		if (DrmSurfaceBuffer sb = dynamic_cast<DrmSurfaceBuffer>(b)) {
		42		return hasBo() != sb->hasBo();
		43		} else {
		44		return true;
		45		}
		46		}
		47
		48		bool hasBo() const {
		49		return m_bo != nullptr;
		50		}
		51		void releaseGbm() override;
		52
		53		private:
		54		gbm_surface *m_surface = nullptr;
		55		gbm_bo *m_bo = nullptr;
		56		};
		57
		58		}
		59
		60		#endif
		61