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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "resourceaccessor_p.h"

#include <Qt3DRender/qrendertargetoutput.h>

#include <private/qrendertargetoutput_p.h>
#include <private/nodemanagers_p.h>
#include <private/texture_p.h>
#include <private/rendertargetoutput_p.h>
#include <private/managers_p.h>

#include <QtCore/qmutex.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {
namespace Render {

RenderBackendResourceAccessor::~RenderBackendResourceAccessor()
{

}

ResourceAccessor::ResourceAccessor(NodeManagers *mgr)
//    : m_glTextureManager(mgr->glTextureManager())
//    , m_textureManager(mgr->textureManager())
//    , m_attachmentManager(mgr->attachmentManager())
//    , m_entityManager(mgr->renderNodesManager())
{

}

// called by render plugins from arbitrary thread
bool ResourceAccessor::accessResource(ResourceType type, Qt3DCore::QNodeId nodeId, void **handle, QMutex **lock)
{
//    switch (type) {

//    case RenderBackendResourceAccessor::OGLTextureWrite:
//        Q_FALLTHROUGH();
//    case RenderBackendResourceAccessor::OGLTextureRead:
//    {
//        Texture *tex = m_textureManager->lookupResource(nodeId);
//        if (!tex)
//            return false;

//        GLTexture *glTex = m_glTextureManager->lookupResource(tex->peerId());
//        if (!glTex)
//            return false;

//        if (glTex->isDirty())
//            return false;

//        if (type == RenderBackendResourceAccessor::OGLTextureWrite)
//            glTex->setExternalRenderingEnabled(true);

//        QOpenGLTexture **glTextureHandle = reinterpret_cast<QOpenGLTexture **>(handle);
//        *glTextureHandle = glTex->getGLTexture();

//        if (type == RenderBackendResourceAccessor::OGLTextureWrite)
//            *lock = glTex->externalRenderingLock();

//        return true;
//    }

//    case RenderBackendResourceAccessor::OutputAttachment: {
//        RenderTargetOutput *output = m_attachmentManager->lookupResource(nodeId);
//        if (output) {
//            Attachment **attachmentData = reinterpret_cast<Attachment **>(handle);
//            *attachmentData = output->attachment();
//            return true;
//        }
//        break;
//    }

//    case RenderBackendResourceAccessor::EntityHandle: {
//        Entity *entity = m_entityManager->lookupResource(nodeId);
//        if (entity) {
//            Entity **pEntity = reinterpret_cast<Entity **>(handle);
//            *pEntity = entity;
//            return true;
//        }
//        break;
//    }

//    default:
//        break;
//    }
    return false;
}

} // namespace Render
} // namespace Qt3DRender

QT_END_NAMESPACE