55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
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/*
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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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SPDX-FileCopyrightText: 2021 Xaver Hugl <xaver.hugl@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "dumb_swapchain.h"
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#include "gbm.h"
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#include "drm_gpu.h"
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#include "logging.h"
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namespace KWin
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{
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DumbSwapchain::DumbSwapchain(DrmGpu *gpu, const QSize &size)
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: m_size(size)
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{
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for (int i = 0; i < 3; i++) {
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auto buffer = QSharedPointer<DrmDumbBuffer>::create(gpu, size);
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if (!buffer->bufferId()) {
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break;
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}
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if (!buffer->map()) {
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break;
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}
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buffer->image()->fill(Qt::black);
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m_buffers << buffer;
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}
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if (m_buffers.count() < 3) {
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qCWarning(KWIN_DRM) << "Failed to create gbm buffers for swapchain!";
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m_buffers.clear();
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}
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}
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QSharedPointer<DrmDumbBuffer> DumbSwapchain::acquireBuffer()
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{
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if (m_buffers.isEmpty()) {
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return nullptr;
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}
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index = (index + 1) % m_buffers.count();
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return m_buffers[index];
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}
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QSharedPointer<DrmDumbBuffer> DumbSwapchain::currentBuffer() const
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{
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return m_buffers[index];
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}
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}
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