/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
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** accordance with the commercial license agreement provided with the
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** General Public License version 3 as published by the Free Software
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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****************************************************************************/

#ifndef QT3D_RENDER_SHADERVARIABLES_P_H
#define QT3D_RENDER_SHADERVARIABLES_P_H

#include <QtGlobal>
#include <QOpenGLContext>

QT_BEGIN_NAMESPACE

namespace Qt3D {

namespace Render {

struct ShaderAttribute
{
    QString m_name;
    GLenum m_type;
    int m_size;
    int m_location;
};

struct ShaderUniform
{
    ShaderUniform()
        : m_size(0)
        , m_offset(-1)
        , m_location(-1)
        , m_blockIndex(-1)
    {}

    QString m_name;
    GLenum m_type;
    int m_size;
    int m_offset; // -1 default, >= 0 if uniform defined in uniform block
    int m_location; // -1 if uniform defined in a uniform block
    int m_blockIndex; // -1 is the default, >= 0 if uniform defined in uniform block
    int m_arrayStride; // -1 is the default, >= 0 if uniform defined in uniform block and if it's an array
    int m_matrixStride; // -1 is the default, >= 0 uniform defined in uniform block and is a matrix
    uint m_rawByteSize; // contains byte size (size / type / strides)
    // size, offset and strides are in bytes
};

struct ShaderUniformBlock
{
    ShaderUniformBlock()
        : m_index(-1)
        , m_binding(-1)
        , m_activeUniformsCount(0)
        , m_size(0)
    {}

    QString m_name;
    int m_index;
    int m_binding;
    int m_activeUniformsCount;
    int m_size;
};

} // Render

} // Qt3D

QT_END_NAMESPACE

#endif // QT3D_RENDER_SHADERVARIABLES_P_H