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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef FBITEM_H
#define FBITEM_H
#include <QQuickFramebufferObject>
#include <QOpenGLVertexArrayObject>
#include <QOpenGLBuffer>
#include <QOpenGLShaderProgram>
#include <QVector3D>
#include "logo.h"
struct StateBinder;
class FbItemRenderer : public QQuickFramebufferObject::Renderer
{
public:
FbItemRenderer(bool multisample);
void synchronize(QQuickFramebufferObject *item) Q_DECL_OVERRIDE;
void render() Q_DECL_OVERRIDE;
QOpenGLFramebufferObject *createFramebufferObject(const QSize &size) Q_DECL_OVERRIDE;
private:
void ensureInit();
void initBuf();
void setupVertexAttribs();
void initProgram();
void updateDirtyUniforms();
bool m_inited;
bool m_multisample;
QMatrix4x4 m_proj;
QMatrix4x4 m_camera;
QMatrix4x4 m_baseWorld;
QMatrix4x4 m_world;
QOpenGLVertexArrayObject m_vao;
QOpenGLBuffer m_logoVbo;
Logo m_logo;
QScopedPointer<QOpenGLShaderProgram> m_program;
int m_projMatrixLoc;
int m_camMatrixLoc;
int m_worldMatrixLoc;
int m_normalMatrixLoc;
int m_lightPosLoc;
QVector3D m_rotation;
enum Dirty {
DirtyProjection = 0x01,
DirtyCamera = 0x02,
DirtyWorld = 0x04,
DirtyLight = 0x08,
DirtyAll = 0xFF
};
int m_dirty;
friend struct StateBinder;
};
class FbItem : public QQuickFramebufferObject
{
Q_OBJECT
Q_PROPERTY(QVector3D eye READ eye WRITE setEye)
Q_PROPERTY(QVector3D target READ target WRITE setTarget)
Q_PROPERTY(QVector3D rotation READ rotation WRITE setRotation)
Q_PROPERTY(bool multisample READ multisample WRITE setMultisample)
public:
explicit FbItem(QQuickItem *parent = 0);
QQuickFramebufferObject::Renderer *createRenderer() const Q_DECL_OVERRIDE;
QVector3D eye() const { return m_eye; }
void setEye(const QVector3D &v);
QVector3D target() const { return m_target; }
void setTarget(const QVector3D &v);
QVector3D rotation() const { return m_rotation; }
void setRotation(const QVector3D &v);
enum SyncState {
CameraNeedsSync = 0x01,
RotationNeedsSync = 0x02,
AllNeedsSync = 0xFF
};
int swapSyncState();
bool multisample() const { return m_multisample; }
void setMultisample(bool m) { m_multisample = m; }
private:
QVector3D m_eye;
QVector3D m_target;
QVector3D m_rotation;
int m_syncState;
bool m_multisample;
};
#endif // FBITEM_H
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