axmol/core/3d/CCSprite3DMaterial.h

/****************************************************************************
 Copyright (c) 2014-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

 https://adxeproject.github.io/

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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

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 ****************************************************************************/
#pragma once

#include <string>
#include <unordered_map>
#include "base/ccTypes.h"
#include "renderer/CCMaterial.h"
#include "3d/CCBundle3DData.h"
#include "renderer/backend/Types.h"

NS_CC_BEGIN

/**
 * @addtogroup _3d
 * @{
 */

class Texture2D;

namespace backend
{
class ProgramState;
}

/**
 * @brief Sprite3DMaterial: Material for Sprite3D.
 */
class CC_DLL Sprite3DMaterial : public Material
{
public:
    /**
     * Material type, there are mainly two types of materials. Built in materials and Custom material
     */
    enum class MaterialType
    {
        // Built in material
        UNLIT,           // unlit material
        UNLIT_NOTEX,     // unlit material without texture
        VERTEX_LIT,      // vertex lit
        DIFFUSE,         // diffuse (pixel lighting)
        DIFFUSE_NOTEX,   // diffuse (without texture)
        BUMPED_DIFFUSE,  // bumped diffuse

        // Custom material
        CUSTOM,  // Create from material file
    };

    /**
     * Get material type
     * @return Material type
     */
    MaterialType getMaterialType() const { return _type; }

    /**
     * Create built in material from material type
     * @param type Material type
     * @param skinned Has skin?
     * @return Created material
     */
    static Sprite3DMaterial* createBuiltInMaterial(MaterialType type, bool skinned);

    /**
     * Create material with file name, it creates material from cache if it is previously loaded
     * @param path Path of material file
     * @return Created material
     */
    static Sprite3DMaterial* createWithFilename(std::string_view path);

    /**
     * Create material with GLProgramState
     * @param programState GLProgramState instance
     * @return Created material
     */
    //    static Sprite3DMaterial* createWithGLStateProgram(GLProgramState* programState);
    static Sprite3DMaterial* createWithProgramState(backend::ProgramState* programState);

    void setTexture(Texture2D* tex, NTextureData::Usage usage);

    /**
     * Create all build in materials
     */
    static void createBuiltInMaterial();

    /**
     * Release all built in materials
     */
    static void releaseBuiltInMaterial();

    /**
     * Release all cached materials
     */
    static void releaseCachedMaterial();

    /**
     * Clone material
     */
    virtual Material* clone() const override;

protected:
    MaterialType _type;
    static std::unordered_map<std::string, Sprite3DMaterial*> _materials;  // cached material
    static Sprite3DMaterial* _unLitMaterial;
    static Sprite3DMaterial* _unLitNoTexMaterial;
    static Sprite3DMaterial* _vertexLitMaterial;
    static Sprite3DMaterial* _diffuseMaterial;
    static Sprite3DMaterial* _diffuseNoTexMaterial;
    static Sprite3DMaterial* _bumpedDiffuseMaterial;

    static Sprite3DMaterial* _unLitMaterialSkin;
    static Sprite3DMaterial* _vertexLitMaterialSkin;
    static Sprite3DMaterial* _diffuseMaterialSkin;
    static Sprite3DMaterial* _bumpedDiffuseMaterialSkin;

    static backend::ProgramState* _unLitMaterialProgState;
    static backend::ProgramState* _unLitNoTexMaterialProgState;
    static backend::ProgramState* _vertexLitMaterialProgState;
    static backend::ProgramState* _diffuseMaterialProgState;
    static backend::ProgramState* _diffuseNoTexMaterialProgState;
    static backend::ProgramState* _bumpedDiffuseMaterialProgState;

    static backend::ProgramState* _unLitMaterialSkinProgState;
    static backend::ProgramState* _vertexLitMaterialSkinProgState;
    static backend::ProgramState* _diffuseMaterialSkinProgState;
    static backend::ProgramState* _bumpedDiffuseMaterialSkinProgState;
};

/**
 * @brief the sprite3D material is only texture for now
 * @js NA
 * @lua NA
 */
class Sprite3DMaterialCache
{
public:
    /**get & destroy cache*/
    static Sprite3DMaterialCache* getInstance();

    /**destroy the instance*/
    static void destroyInstance();

    /**add to cache*/
    bool addSprite3DMaterial(std::string_view key, Texture2D* tex);

    /**get material from cache*/
    Texture2D* getSprite3DMaterial(std::string_view key);

    /**remove all spritematerial*/
    void removeAllSprite3DMaterial();
    /**remove unused spritematerial*/
    void removeUnusedSprite3DMaterial();

    CC_CONSTRUCTOR_ACCESS :

        Sprite3DMaterialCache();
    ~Sprite3DMaterialCache();

protected:
    static Sprite3DMaterialCache* _cacheInstance;  // instance
    hlookup::string_map<Texture2D*> _materials;    // cached material
};

// end of 3d group
/// @}

NS_CC_END