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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef Q3DSSHADERGENERATORS_H
#define Q3DSSHADERGENERATORS_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of a number of Qt sources files. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
#include "q3dsdefaultvertexpipeline_p.h"
QT_BEGIN_NAMESPACE
// Helper implements the vertex pipeline for mesh subsets when bound to the default material.
// Should be completely possible to use for custom materials with a bit of refactoring.
struct Q3DSSubsetMaterialVertexPipeline : public Q3DSVertexPipelineImpl
{
TessModeValues::Enum m_TessMode;
Q3DSSubsetMaterialVertexPipeline(Q3DSDefaultMaterialShaderGenerator &inMaterial,
Q3DSAbstractShaderProgramGenerator &inProgram,
bool inWireframe);
void initializeTessControlShader();
void initializeTessEvaluationShader();
void finalizeTessControlShader();
void finalizeTessEvaluationShader();
void beginVertexGeneration(Q3DSImage *displacementImage) override;
void beginFragmentGeneration() override;
void assignOutput(const char *inVarName, const char *inVarValue) override;
void doGenerateUVCoords(quint32 inUVSet = 0) override;
// fragment shader expects varying vertex normal
// lighting in vertex pipeline expects world_normal
void doGenerateWorldNormal() override;
void doGenerateObjectNormal() override;
void doGenerateWorldPosition() override;
void doGenerateVarTangentAndBinormal() override;
void doGenerateVertexColor() override;
void endVertexGeneration() override;
void endFragmentGeneration() override;
void addInterpolationParameter(const char *inName, const char *inType) override;
Q3DSAbstractShaderStageGenerator &activeStage() override;
};
QT_END_NAMESPACE
#endif // Q3DSSHADERGENERATORS_H
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