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author | Mike Krus <mike.krus@kdab.com> | 2020-04-24 13:43:56 +0100 |
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committer | Mike Krus <mike.krus@kdab.com> | 2020-04-27 11:57:33 +0100 |
commit | 6c1758d35e20655f46ba3696671068f4862c8878 (patch) | |
tree | d4b4fc2ae8f5a4512de4eb015667b024b6a8e6b9 /src/plugins/renderers/rhi/renderer/renderqueue.cpp | |
parent | b7967a8abcdac438a1f31800b71e219e3c52c24a (diff) | |
parent | 37735f11f9437b916b194cfd48c452c7c70682f8 (diff) |
Merge remote-tracking branch 'origin/5.15' into dev
Change-Id: Id669d5c1aab29965eac0dabd1cb497e908dac23e
Diffstat (limited to 'src/plugins/renderers/rhi/renderer/renderqueue.cpp')
-rw-r--r-- | src/plugins/renderers/rhi/renderer/renderqueue.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/plugins/renderers/rhi/renderer/renderqueue.cpp b/src/plugins/renderers/rhi/renderer/renderqueue.cpp new file mode 100644 index 000000000..39eaddc9a --- /dev/null +++ b/src/plugins/renderers/rhi/renderer/renderqueue.cpp @@ -0,0 +1,138 @@ +/**************************************************************************** +** +** Copyright (C) 2020 Klaralvdalens Datakonsult AB (KDAB). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "renderqueue_p.h" +#include <renderview_p.h> +#include <QThread> + +QT_BEGIN_NAMESPACE + +namespace Qt3DRender { + +namespace Render { + +namespace Rhi { + +RenderQueue::RenderQueue() + : m_noRender(false), + m_wasReset(true), + m_targetRenderViewCount(0), + m_currentRenderViewCount(0), + m_currentWorkQueue(1) +{ +} + +int RenderQueue::currentRenderViewCount() const +{ + return m_currentRenderViewCount; +} + +/* + * In case the framegraph changed or when the current number of render queue + * needs to be reset. + */ +void RenderQueue::reset() +{ + m_currentRenderViewCount = 0; + m_targetRenderViewCount = 0; + m_currentWorkQueue.clear(); + m_noRender = false; + m_wasReset = true; +} + +void RenderQueue::setNoRender() +{ + Q_ASSERT(m_targetRenderViewCount == 0); + m_noRender = true; +} + +/* + * Queue up a RenderView for the frame being built. + * Thread safe as this is called from the renderer which is locked. + * Returns true if the renderView is complete + */ +bool RenderQueue::queueRenderView(RenderView *renderView, uint submissionOrderIndex) +{ + Q_ASSERT(!m_noRender); + m_currentWorkQueue[submissionOrderIndex] = renderView; + ++m_currentRenderViewCount; + Q_ASSERT(m_currentRenderViewCount <= m_targetRenderViewCount); + return isFrameQueueComplete(); +} + +/* + * Called by the Rendering Thread to retrieve the a frame queue to render. + * A call to reset is required after rendering of the frame. Otherwise under some + * conditions the current but then invalidated frame queue could be reused. + */ +QVector<RenderView *> RenderQueue::nextFrameQueue() +{ + return m_currentWorkQueue; +} + +/* + * Sets the number \a targetRenderViewCount of RenderView objects that make up a frame. + */ +void RenderQueue::setTargetRenderViewCount(int targetRenderViewCount) +{ + Q_ASSERT(!m_noRender); + m_targetRenderViewCount = targetRenderViewCount; + m_currentWorkQueue.resize(targetRenderViewCount); + m_wasReset = false; +} + +/* + * Returns true if all the RenderView objects making up the current frame have been queued. + * Returns false otherwise. + * \note a frameQueue or size 0 is considered incomplete. + */ +bool RenderQueue::isFrameQueueComplete() const +{ + return (m_noRender + || (m_targetRenderViewCount > 0 + && m_targetRenderViewCount == m_currentRenderViewCount)); +} + +} // namespace Rhi + +} // namespace Render + +} // namespace Qt3DRender + +QT_END_NAMESPACE |