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/**
 * @file lltexlayerparams.h
 * @brief Texture layer parameters, used by lltexlayer.
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLTEXLAYERPARAMS_H
#define LL_LLTEXLAYERPARAMS_H

#include "llpointer.h"
#include "v4color.h"
#include "llviewervisualparam.h"

class LLAvatarAppearance;
class LLImageRaw;
class LLImageTGA;
class LLTexLayer;
class LLTexLayerInterface;
class LLGLTexture;
class LLWearable;

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LLTexLayerParam
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
class LLTexLayerParam : public LLViewerVisualParam
{
public:
    LLTexLayerParam(LLTexLayerInterface *layer);
    LLTexLayerParam(LLAvatarAppearance *appearance);
    /*virtual*/ BOOL setInfo(LLViewerVisualParamInfo *info, BOOL add_to_appearance);
    /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable) const = 0;

protected:
    LLTexLayerParam(const LLTexLayerParam& pOther);

    LLTexLayerInterface*    mTexLayer;
    LLAvatarAppearance*     mAvatarAppearance;
};

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LLTexLayerParamAlpha
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LL_ALIGN_PREFIX(16)
class alignas(16) LLTexLayerParamAlpha : public LLTexLayerParam
{
    LL_ALIGN_NEW
public:
    LLTexLayerParamAlpha( LLTexLayerInterface* layer );
    LLTexLayerParamAlpha( LLAvatarAppearance* appearance );
    /*virtual*/ ~LLTexLayerParamAlpha();

    /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable = NULL) const;

    // LLVisualParam Virtual functions
    ///*virtual*/ BOOL      parseData(LLXmlTreeNode* node);
    /*virtual*/ void        apply( ESex avatar_sex ) {}
    /*virtual*/ void        setWeight(F32 weight);
    /*virtual*/ void        setAnimationTarget(F32 target_value);
    /*virtual*/ void        animate(F32 delta);

    // LLViewerVisualParam Virtual functions
    /*virtual*/ F32                 getTotalDistortion()                                    { return 1.f; }
    /*virtual*/ const LLVector4a&   getAvgDistortion()                                      { return mAvgDistortionVec; }
    /*virtual*/ F32                 getMaxDistortion()                                      { return 3.f; }
    /*virtual*/ LLVector4a          getVertexDistortion(S32 index, LLPolyMesh *poly_mesh)   { return LLVector4a(1.f, 1.f, 1.f);}
    /*virtual*/ const LLVector4a*   getFirstDistortion(U32 *index, LLPolyMesh **poly_mesh)  { index = 0; poly_mesh = NULL; return &mAvgDistortionVec;};
    /*virtual*/ const LLVector4a*   getNextDistortion(U32 *index, LLPolyMesh **poly_mesh)   { index = 0; poly_mesh = NULL; return NULL;};

    // New functions
    BOOL                    render( S32 x, S32 y, S32 width, S32 height );
    BOOL                    getSkip() const;
    void                    deleteCaches();
    BOOL                    getMultiplyBlend() const;

private:
    LLTexLayerParamAlpha(const LLTexLayerParamAlpha& pOther);

    LLPointer<LLGLTexture>  mCachedProcessedTexture;
    LLPointer<LLImageTGA>   mStaticImageTGA;
    LLPointer<LLImageRaw>   mStaticImageRaw;
    std::atomic<BOOL>       mNeedsCreateTexture;
    BOOL                    mStaticImageInvalid;
    LL_ALIGN_16(LLVector4a              mAvgDistortionVec);
    F32                     mCachedEffectiveWeight;

public:
    // Global list of instances for gathering statistics
    static void             dumpCacheByteCount();
    static void             getCacheByteCount( S32* gl_bytes );

    typedef std::list< LLTexLayerParamAlpha* > param_alpha_ptr_list_t;
    static param_alpha_ptr_list_t sInstances;
} LL_ALIGN_POSTFIX(16);
class LLTexLayerParamAlphaInfo : public LLViewerVisualParamInfo
{
    friend class LLTexLayerParamAlpha;
public:
    LLTexLayerParamAlphaInfo();
    /*virtual*/ ~LLTexLayerParamAlphaInfo() {};

    /*virtual*/ BOOL parseXml(LLXmlTreeNode* node);

private:
    std::string             mStaticImageFileName;
    BOOL                    mMultiplyBlend;
    BOOL                    mSkipIfZeroWeight;
    F32                     mDomain;
};
//
// LLTexLayerParamAlpha
//-----------------------------------------------------------------------------

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// LLTexLayerParamColor
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class alignas(16) LLTexLayerParamColor : public LLTexLayerParam
{
    LL_ALIGN_NEW
public:
    enum EColorOperation
    {
        OP_ADD = 0,
        OP_MULTIPLY = 1,
        OP_BLEND = 2,
        OP_COUNT = 3 // Number of operations
    };

    LLTexLayerParamColor( LLTexLayerInterface* layer );
    LLTexLayerParamColor( LLAvatarAppearance* appearance );

    /* virtual */ ~LLTexLayerParamColor();

    /*virtual*/ LLViewerVisualParam* cloneParam(LLWearable* wearable = NULL) const;

    // LLVisualParam Virtual functions
    ///*virtual*/ BOOL          parseData(LLXmlTreeNode* node);
    /*virtual*/ void            apply( ESex avatar_sex ) {}
    /*virtual*/ void            setWeight(F32 weight);
    /*virtual*/ void            setAnimationTarget(F32 target_value);
    /*virtual*/ void            animate(F32 delta);


    // LLViewerVisualParam Virtual functions
    /*virtual*/ F32                 getTotalDistortion()                                    { return 1.f; }
    /*virtual*/ const LLVector4a&   getAvgDistortion()                                      { return mAvgDistortionVec; }
    /*virtual*/ F32                 getMaxDistortion()                                      { return 3.f; }
    /*virtual*/ LLVector4a          getVertexDistortion(S32 index, LLPolyMesh *poly_mesh)   { return LLVector4a(1.f, 1.f, 1.f); }
    /*virtual*/ const LLVector4a*   getFirstDistortion(U32 *index, LLPolyMesh **poly_mesh)  { index = 0; poly_mesh = NULL; return &mAvgDistortionVec;};
    /*virtual*/ const LLVector4a*   getNextDistortion(U32 *index, LLPolyMesh **poly_mesh)   { index = 0; poly_mesh = NULL; return NULL;};

    // New functions
    LLColor4                getNetColor() const;
protected:
    LLTexLayerParamColor(const LLTexLayerParamColor& pOther);

    virtual void onGlobalColorChanged() {}
private:
    LLVector4a              mAvgDistortionVec;
};

class LLTexLayerParamColorInfo : public LLViewerVisualParamInfo
{
    friend class LLTexLayerParamColor;

public:
    LLTexLayerParamColorInfo();
    virtual ~LLTexLayerParamColorInfo() {};
    BOOL parseXml( LLXmlTreeNode* node );
    LLTexLayerParamColor::EColorOperation getOperation() const { return mOperation; }
private:
    enum { MAX_COLOR_VALUES = 20 };
    LLTexLayerParamColor::EColorOperation       mOperation;
    LLColor4            mColors[MAX_COLOR_VALUES];
    S32                 mNumColors;
};

typedef std::vector<LLTexLayerParamColor *> param_color_list_t;
typedef std::vector<LLTexLayerParamAlpha *> param_alpha_list_t;
typedef std::vector<LLTexLayerParamColorInfo *> param_color_info_list_t;
typedef std::vector<LLTexLayerParamAlphaInfo *> param_alpha_info_list_t;

#endif