/****************************************************************************
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** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
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****************************************************************************/

#ifndef QT3D_RENDER_QGRAPHICSHELPERGL2_H
#define QT3D_RENDER_QGRAPHICSHELPERGL2_H

#include <Qt3DRenderer/private/qgraphicshelperinterface_p.h>

#ifndef QT_OPENGL_ES_2

QT_BEGIN_NAMESPACE

class QOpenGLFunctions_2_0;
class QOpenGLExtension_ARB_framebuffer_object;

namespace Qt3D {
namespace Render {

class QGraphicsHelperGL2 : public QGraphicsHelperInterface
{
public:
    QGraphicsHelperGL2();

    // QGraphicHelperInterface interface
    void initializeHelper(QOpenGLContext *context, QAbstractOpenGLFunctions *functions) Q_DECL_OVERRIDE;
    void drawElementsInstanced(GLenum primitiveType, GLsizei primitiveCount, GLint indexType, void *indices, GLsizei instances) Q_DECL_OVERRIDE;
    void drawArraysInstanced(GLenum primitiveType, GLint first, GLsizei count, GLsizei instances) Q_DECL_OVERRIDE;
    void drawElements(GLenum primitiveType, GLsizei primitiveCount, GLint indexType, void *indices) Q_DECL_OVERRIDE;
    void drawArrays(GLenum primitiveType, GLint first, GLsizei count) Q_DECL_OVERRIDE;
    void setVerticesPerPatch(GLint verticesPerPatch) Q_DECL_OVERRIDE;
    void useProgram(GLuint programId) Q_DECL_OVERRIDE;
    QVector<ShaderUniform> programUniformsAndLocations(GLuint programId) Q_DECL_OVERRIDE;
    QVector<ShaderAttribute> programAttributesAndLocations(GLuint programId) Q_DECL_OVERRIDE;
    QVector<ShaderUniformBlock> programUniformBlocks(GLuint programId) Q_DECL_OVERRIDE;
    void vertexAttribDivisor(GLuint index, GLuint divisor) Q_DECL_OVERRIDE;
    void blendEquation(GLenum mode) Q_DECL_OVERRIDE;
    void alphaTest(GLenum mode1, GLenum mode2) Q_DECL_OVERRIDE;
    void depthTest(GLenum mode) Q_DECL_OVERRIDE;
    void depthMask(GLenum mode) Q_DECL_OVERRIDE;
    void cullFace(GLenum mode) Q_DECL_OVERRIDE;
    void frontFace(GLenum mode) Q_DECL_OVERRIDE;
    void enableAlphaCoverage() Q_DECL_OVERRIDE;
    void disableAlphaCoverage() Q_DECL_OVERRIDE;
    GLuint createFrameBufferObject() Q_DECL_OVERRIDE;
    void releaseFrameBufferObject(GLuint frameBufferId) Q_DECL_OVERRIDE;
    void bindFrameBufferObject(GLuint frameBufferId) Q_DECL_OVERRIDE;
    GLuint boundFrameBufferObject() Q_DECL_OVERRIDE;
    bool checkFrameBufferComplete() Q_DECL_OVERRIDE;
    void bindFrameBufferAttachment(QOpenGLTexture *texture, const Attachment &attachment) Q_DECL_OVERRIDE;
    bool supportsFeature(Feature feature) const Q_DECL_OVERRIDE;
    void drawBuffers(GLsizei n, const int *bufs) Q_DECL_OVERRIDE;
    void bindFragDataLocation(GLuint shader, const QHash<QString, int> &outputs) Q_DECL_OVERRIDE;
    void bindUniform(const QVariant &v, const ShaderUniform &description) Q_DECL_OVERRIDE;
    void bindUniformBlock(GLuint programId, GLuint uniformBlockIndex, GLuint uniformBlockBinding) Q_DECL_OVERRIDE;
    void bindBufferBase(GLenum target, GLuint index, GLuint buffer) Q_DECL_OVERRIDE;
    void buildUniformBuffer(const QVariant &v, const ShaderUniform &description, QByteArray &buffer) Q_DECL_OVERRIDE;
    uint uniformByteSize(const ShaderUniform &description) Q_DECL_OVERRIDE;

private:
    QOpenGLFunctions_2_0 *m_funcs;
    QOpenGLExtension_ARB_framebuffer_object *m_fboFuncs;
};

} // Render
} // Qt3D

QT_END_NAMESPACE

#endif // !QT_OPENGL_ES_2

#endif // QT3D_RENDER_QGRAPHICSHELPERGL2_H