IMaterialViewportShading.h

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/**********************************************************************
 *<
    FILE: IMaterialViewportShading.h

    DESCRIPTION: Interface definitions for Viewport Shading Support

    CREATED BY: Qilin.Ren

    HISTORY: March 2007

 *> Copyright (c) 2007, All Rights Reserved.
 **********************************************************************/

#pragma once

#include "imtl.h"


#define IID_MATERIAL_VIEWPORT_SHADING Interface_ID(0x3ae06719, 0x65847f74)


class IMaterialViewportShading : public BaseInterface
{
public:
    enum ShadingModel
    {
        Standard, 
        Hardware, 
        OtherTypes, 
    };

public:
    // from BaseInterface
    CoreExport virtual BaseInterface* GetInterface(Interface_ID id);
    CoreExport virtual Interface_ID GetID();

protected:
    virtual bool IsShadingModelSupported(ShadingModel model) const = 0;

    virtual ShadingModel GetCurrentShadingModel() const = 0;

    virtual bool SetCurrentShadingModel(ShadingModel model) = 0;

    virtual int GetSupportedMapLevels() const = 0;

public:
    // Helper functions for accessing the IMaterialViewportShading interface on Materials. These
    // are exported through Core.dll

    CoreExport static bool IsShadingModelSupported(
        const MtlBase& material, 
        ShadingModel model);

    CoreExport static ShadingModel GetCurrentShadingModel(
        const MtlBase& material);

    CoreExport static bool SetCurrentShadingModel(
        MtlBase& material, 
        ShadingModel model);

    CoreExport static int GetSupportedMapLevels(
        const MtlBase& material);
};