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/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3D_RENDER_QUNIFORMVALUE_H
#define QT3D_RENDER_QUNIFORMVALUE_H
#include <QVariant>
#include <QByteArray>
#include <QVector>
#include <QOpenGLShaderProgram>
#include <Qt3DCore/qnodeid.h>
#include <Qt3DRenderer/private/renderlogging_p.h>
// for RenderTexturePtr
#include <Qt3DRenderer/private/rendertextureprovider_p.h>
#include <Qt3DRenderer/private/shadervariables_p.h>
QT_BEGIN_NAMESPACE
class QOpenGLShaderProgram;
namespace Qt3D {
class QFrameAllocator;
namespace Render {
class QGraphicsContext;
/**
* @brief The QUniformValue class - immutable storage of uniform value
* in the rendering backend.
*/
class QUniformValue
{
public:
QUniformValue();
virtual ~QUniformValue() {}
static QUniformValue *fromVariant(const QVariant &v, QFrameAllocator *allocator);
virtual bool operator ==(const QUniformValue &other);
bool operator !=(const QUniformValue &other);
virtual void apply(QGraphicsContext *ctx, const ShaderUniform &description) const;
protected:
QVariant m_var;
};
class TextureUniform : public QUniformValue
{
public :
TextureUniform()
: QUniformValue()
, m_textureUnit(-1)
{
}
void setTextureId(const QNodeId &id)
{
m_textureId = id;
}
QNodeId textureId() const { return m_textureId; }
bool operator ==(const QUniformValue &other) Q_DECL_OVERRIDE
{
Q_UNUSED(other);
return false;
}
// Called by the QGraphicContext prior applying
void setTextureUnit(int textureUnit) { m_textureUnit = textureUnit; }
void apply(QGraphicsContext *ctx, const ShaderUniform &description) const;
private:
QNodeId m_textureId;
int m_textureUnit;
};
class QUniformPack
{
public:
~QUniformPack();
void setUniform(QString glslName, const QUniformValue *val);
void setTexture(QString glslName, const QNodeId &id);
const QHash<QString, const QUniformValue* > &uniforms() const { return m_uniforms; }
QHash<QString, const QUniformValue* > &uniforms() { return m_uniforms; }
struct NamedTexture {
NamedTexture() {}
NamedTexture(QString nm, const QNodeId &t) :
glslName(nm),
texId(t)
{ }
QString glslName;
QNodeId texId;
};
QVector<NamedTexture> textures() const { return m_textures; }
private:
QHash<QString, const QUniformValue* > m_uniforms;
QVector<NamedTexture> m_textures;
};
} // Render
} // Qt3D
QT_END_NAMESPACE
#endif // QT3D_RENDER_QUNIFORMVALUE_H
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