Texture.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#ifndef HPL_TEXTURE_H
#define HPL_TEXTURE_H

#include "common/array.h"
#include "graphics/pixelformat.h"
#include "hpl1/engine/graphics/GraphicsTypes.h"
#include "hpl1/engine/graphics/LowLevelPicture.h"
#include "hpl1/engine/graphics/bitmap2D.h"
#include "hpl1/engine/resources/ResourceBase.h"

namespace hpl {

enum eTextureType {
    eTextureType_Normal,
    eTextureType_RenderTarget,
    eTextureType_LastEnum
};

//-----------------------------------------

enum eTextureTarget {
    eTextureTarget_1D,
    eTextureTarget_2D,
    eTextureTarget_Rect,
    eTextureTarget_CubeMap,
    eTextureTarget_3D,
    eTextureTarget_LastEnum
};

//-----------------------------------------

enum eTextureWrap {
    eTextureWrap_Repeat,
    eTextureWrap_Clamp,
    eTextureWrap_ClampToEdge,
    eTextureWrap_ClampToBorder,
    eTextureWrap_LastEnum
};

//-----------------------------------------

enum eTextureFilter {
    eTextureFilter_Bilinear,
    eTextureFilter_Trilinear,
    eTextureFilter_LastEnum
};

//-----------------------------------------

enum eTextureAnimMode {
    eTextureAnimMode_None,
    eTextureAnimMode_Loop,
    eTextureAnimMode_Oscillate,
    eTextureAnimMode_LastEnum
};

//-----------------------------------------

class iLowLevelGraphics;

class iTexture : public LowLevelPicture, public iResourceBase {
public:
    iTexture(tString asName, tString asType, Graphics::PixelFormat *apPxlFmt, iLowLevelGraphics *apLowLevelGraphics,
             eTextureType aType, bool abUseMipMaps, eTextureTarget aTarget,
             bool abCompress = false)
        : LowLevelPicture(asType), iResourceBase(asName, 0),
          mType(aType), mbUseMipMaps(abUseMipMaps),
          mpLowLevelGraphics(apLowLevelGraphics), mbCompress(abCompress),
          mTarget(aTarget),
          mWrapS(eTextureWrap_Repeat), mWrapT(eTextureWrap_Repeat), mWrapR(eTextureWrap_Repeat),
          mfFrameTime(1), mAnimMode(eTextureAnimMode_Loop), mlSizeLevel(0), mvMinLevelSize(16, 16),
          mfAnisotropyDegree(1.0f), mFilter(eTextureFilter_Bilinear), _bpp(apPxlFmt->bpp()) {}

    virtual ~iTexture() {}

    void SetSizeLevel(unsigned int alLevel) { mlSizeLevel = alLevel; }
    void SetMinLevelSize(const cVector2l &avSize) { mvMinLevelSize = avSize; }

    bool reload() override { return false; }
    void unload() override {}
    void destroy() override {}

    virtual bool CreateFromBitmap(Bitmap2D *pBmp) = 0;
    virtual bool CreateCubeFromBitmapVec(tBitmap2DVec *avBitmaps) = 0;
    virtual bool Create(unsigned int alWidth, unsigned int alHeight, cColor aCol) = 0;

    virtual bool CreateAnimFromBitmapVec(tBitmap2DVec *avBitmaps) = 0;

    virtual bool CreateFromArray(unsigned char *apPixelData, int alChannels, const cVector3l &avSize) = 0;

    virtual void Update(float afTimeStep) = 0;

    virtual void SetFilter(eTextureFilter aFilter) = 0;
    virtual void SetAnisotropyDegree(float afX) = 0;
    eTextureFilter GetFilter() { return mFilter; }
    float GetAnisotropyDegree(float afX) { return mfAnisotropyDegree; }

    virtual float GetGamma() = 0;
    virtual void SetGamma(float afGamma) = 0;
    virtual int GetHandle() = 0;

    virtual bool hasAlpha() override { return false; }
    uint32 getBpp() const override { return _bpp; }

    virtual void SetWrapS(eTextureWrap aMode) = 0;
    virtual void SetWrapT(eTextureWrap aMode) = 0;
    virtual void SetWrapR(eTextureWrap aMode) = 0;

    eTextureWrap GetWrapS() { return mWrapS; }
    eTextureWrap GetWrapT() { return mWrapT; }
    eTextureWrap GetWrapR() { return mWrapR; }

    void SetFrameTime(float afX) { mfFrameTime = afX; }
    float GetFrameTime() { return mfFrameTime; }

    eTextureAnimMode GetAnimMode() { return mAnimMode; }
    void SetAnimMode(eTextureAnimMode aMode) { mAnimMode = aMode; };

    eTextureType GetTextureType() { return mType; }
    bool UsesMipMaps() { return mbUseMipMaps; }
    void SetMipMapUse(bool abX) { mbUseMipMaps = abX; }
    eTextureTarget GetTarget() { return mTarget; }

    virtual bool HasAnimation() = 0;
    virtual void NextFrame() = 0;
    virtual void PrevFrame() = 0;
    virtual float GetT() = 0;
    virtual float GetTimeCount() = 0;
    virtual void SetTimeCount(float afX) = 0;
    virtual int GetCurrentLowlevelHandle() = 0;

protected:
    eTextureType mType;
    eTextureTarget mTarget;
    eTextureWrap mWrapS;
    eTextureWrap mWrapT;
    eTextureWrap mWrapR;
    eTextureFilter mFilter;
    float mfAnisotropyDegree;

    bool mbUseMipMaps;
    bool mbCompress;
    iLowLevelGraphics *mpLowLevelGraphics;
    float mfFrameTime;
    eTextureAnimMode mAnimMode;
    unsigned int mlSizeLevel;
    uint32 _bpp;
    cVector2l mvMinLevelSize;
};

typedef Common::Array<iTexture *> tTextureVec;
typedef tTextureVec::iterator tTextureVecIt;

} // namespace hpl

#endif // HPL_TEXTURE_H