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/****************************************************************************
**
** Copyright (C) 2019 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3D_RENDER_GL_IMGUIRENDER_H_
#define QT3D_RENDER_GL_IMGUIRENDER_H_
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QObject>
#include <QOpenGLFunctions>
#include <QPoint>
#include <memory>
struct ImDrawData;
QT_BEGIN_NAMESPACE
class QMouseEvent;
class QWheelEvent;
class QKeyEvent;
class QOpenGLExtraFunctions;
class QOpenGLShaderProgram;
namespace Qt3DCore {
class QServiceLocator;
}
namespace Qt3DRender {
namespace Render {
namespace OpenGL {
class RenderView;
class Renderer;
}
namespace Debug {
#define IMGUI_PERF_LOG_SIZE 30
class ImGuiRenderer : public QObject {
Q_OBJECT
public:
ImGuiRenderer(Qt3DRender::Render::OpenGL::Renderer *renderer);
void processEvent(QEvent *event);
void renderDebugOverlay(const QVector<Render::OpenGL::RenderView *> &renderViews, const Render::OpenGL::RenderView *renderView, int jobsInLastFrame);
void setCapabilities(const QString &capabilities);
private:
bool newFrame(const Render::OpenGL::RenderView *renderView);
void renderDrawList(ImDrawData *draw_data);
void onMouseChange(QMouseEvent *event);
void onWheel(QWheelEvent *event);
void onKeyPressRelease(QKeyEvent *event);
void showGLInfo();
void showRenderDetails(const QVector<Render::OpenGL::RenderView *> &renderViews);
bool createFontsTexture();
bool createDeviceObjects();
double m_time = 0.;
bool m_mousePressed[3] = { false, false, false };
float m_mouseWheel;
float m_mouseWheelH;
GLuint m_fontTexture = 0;
GLuint m_shaderHandle = 0, m_vertHandle = 0, m_fragHandle = 0;
int m_attribLocationTex = 0, m_attribLocationProjMtx = 0;
int m_attribLocationPosition = 0, m_attribLocationUV = 0, m_attribLocationColor = 0;
unsigned int m_vboHandle = 0, m_vaoHandle = 0, m_elementsHandle = 0;
Render::OpenGL::Renderer *m_renderer;
QOpenGLExtraFunctions *m_funcs = nullptr;
QOpenGLShaderProgram *m_shader = nullptr;
bool m_showGLInfoWindow = false;
bool m_showRenderDetailsWindow = false;
float m_fpsLog[IMGUI_PERF_LOG_SIZE];
float m_jobsLog[IMGUI_PERF_LOG_SIZE];
std::pair<float, float> m_fpsRange;
std::pair<float, float> m_jobsRange;
QByteArray m_capabilities;
};
} // namespace Debug
} // namespace Render
} // namespace Qt3DRender
QT_END_NAMESPACE
#endif // QT3D_RENDER_GL_IMGUIRENDER_H_
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