axmol/tests/cpp-tests/Source/ShaderTest/ShaderTest2.cpp

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

 https://axmolengine.github.io/

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#include "ShaderTest2.h"
#include "ShaderTest.h"
#include "../testResource.h"
#include "axmol.h"
#include "renderer/backend/Device.h"
#include <tuple>

USING_NS_AX;

#define SET_UNIFORM(ps, name, value)                          \
    do                                                        \
    {                                                         \
        decltype(value) __v = value;                          \
        auto __loc          = (ps)->getUniformLocation(name); \
        (ps)->setUniform(__loc, &__v, sizeof(__v));           \
    } while (false)

#define SET_TEXTURE(ps, name, idx, value)            \
    do                                               \
    {                                                \
        auto* __v  = value;                          \
        auto __loc = (ps)->getUniformLocation(name); \
        (ps)->setTexture(__loc, idx, __v);           \
    } while (false)

Shader2Tests::Shader2Tests()
{
    ADD_TEST_CASE(EffectSpriteTest);
    ADD_TEST_CASE(EffectSpriteLamp);
}

//
// EffectSprite
//
static int tuple_sort(const std::tuple<ssize_t, Effect*, QuadCommand>& tuple1,
                      const std::tuple<ssize_t, Effect*, QuadCommand>& tuple2)
{
    return std::get<0>(tuple1) < std::get<0>(tuple2);
}

static void updateUniforms(backend::ProgramState* programState)
{
    float time = Director::getInstance()->getTotalFrames() * Director::getInstance()->getAnimationInterval();
    Vec4 uTime(time / 10.0f, time, time * 2.0f, time * 4.0f);
    Vec4 sinTime(time / 8.0f, time / 4.0f, time / 2.0f, sinf(time));
    Vec4 cosTime(time / 8.0f, time / 4.0f, time / 2.0f, cosf(time));

    SET_UNIFORM(programState, "u_Time", uTime);
    SET_UNIFORM(programState, "u_SinTime", sinTime);
    SET_UNIFORM(programState, "u_CosTime", cosTime);
}

class Effect;
class EffectSprite : public Sprite
{
public:
    static EffectSprite* create(std::string_view filename)
    {
        auto ret = new EffectSprite;
        if (ret->initWithFile(filename))
        {
            ret->autorelease();
            return ret;
        }
        AX_SAFE_RELEASE(ret);
        return nullptr;
    }

    void setEffect(Effect* effect)
    {
        if (_defaultEffect != effect)
        {
            effect->setTarget(this);

            AX_SAFE_RELEASE(_defaultEffect);
            _defaultEffect = effect;
            AX_SAFE_RETAIN(_defaultEffect);

            setProgramState(_defaultEffect->getProgramState());
        }
    }
    void addEffect(Effect* effect, ssize_t order)
    {
        effect->retain();
        effect->setTarget(this);

        _effects.emplace_back(std::make_tuple(order, effect, QuadCommand()));

        std::sort(std::begin(_effects), std::end(_effects), tuple_sort);
    }

    void draw(Renderer* renderer, const Mat4& transform, uint32_t flags) override
    {
#if AX_USE_CULLING
        // Don't do calculate the culling if the transform was not updated
        _insideBounds =
            (flags & FLAGS_TRANSFORM_DIRTY) ? renderer->checkVisibility(transform, _contentSize) : _insideBounds;

        if (_insideBounds)
#endif
        {
            // negative effects: order < 0
            int idx = 0;
            for (auto&&effect : _effects)
            {

                if (std::get<0>(effect) >= 0)
                    break;
                auto* programState = std::get<1>(effect)->getProgramState();
                if (programState)
                {
                    QuadCommand& q = std::get<2>(effect);
                    q.init(_globalZOrder, _texture, _blendFunc, &_quad, 1, transform, flags);
                    updateUniforms(programState);
                    renderer->addCommand(&q);
                }
                idx++;
            }

            // normal effect: order == 0
            _trianglesCommand.init(_globalZOrder, _texture, _blendFunc, _polyInfo.triangles, transform, flags);

            updateUniforms(_trianglesCommand.getPipelineDescriptor().programState);
            renderer->addCommand(&_trianglesCommand);

            // positive effects: order >= 0
            for (auto&& it = std::begin(_effects) + idx; it != std::end(_effects); ++it)
            {
                QuadCommand& q     = std::get<2>(*it);
                auto* programState = std::get<1>(*it)->getProgramState();
                updateUniforms(programState);
                q.init(_globalZOrder, _texture, _blendFunc, &_quad, 1, transform, flags);
                q.getPipelineDescriptor().programState = programState;
                renderer->addCommand(&q);
                idx++;
            }
        }
    }

protected:
    EffectSprite() : _defaultEffect(nullptr) { _effects.reserve(2); }
    ~EffectSprite()
    {
        for (auto&&tuple : _effects)
        {
            std::get<1>(tuple)->release();
        }
        AX_SAFE_RELEASE(_defaultEffect);
    }

    std::vector<std::tuple<ssize_t, Effect*, QuadCommand>> _effects;
    Effect* _defaultEffect;
};

//
// Effect
//

bool Effect::initProgramState(std::string_view fragmentFilename)
{
    auto program      = ProgramManager::getInstance()->loadProgram(positionTextureColor_vert, fragmentFilename, VertexLayoutType::Sprite);
    auto programState = new backend::ProgramState(program);
    AX_SAFE_RELEASE(_programState);
    _programState = programState;

    return _programState != nullptr;
}

Effect::Effect() {}

Effect::~Effect()
{
    AX_SAFE_RELEASE_NULL(_programState);
}

// Blur
class EffectBlur : public Effect
{
public:
    CREATE_FUNC(EffectBlur);
    virtual void setTarget(EffectSprite* sprite) override;
    void setBlurRadius(float radius);
    void setBlurSampleNum(float num);

protected:
    bool init(float blurRadius = 10.0f, float sampleNum = 5.0f);

    float _blurRadius;
    float _blurSampleNum;
};

void EffectBlur::setTarget(EffectSprite* sprite)
{
    if (_programState == nullptr)
        return;

    Size size = sprite->getTexture()->getContentSizeInPixels();
    SET_UNIFORM(_programState, "resolution", size);
    SET_UNIFORM(_programState, "blurRadius", _blurRadius);
    SET_UNIFORM(_programState, "sampleNum", _blurSampleNum);
}

bool EffectBlur::init(float blurRadius, float sampleNum)
{
    initProgramState("custom/example_Blur_fs");
    _blurRadius    = blurRadius;
    _blurSampleNum = sampleNum;

    return true;
}

void EffectBlur::setBlurRadius(float radius)
{
    _blurRadius = radius;
}

void EffectBlur::setBlurSampleNum(float num)
{
    _blurSampleNum = num;
}

// Outline
class EffectOutline : public Effect
{
public:
    CREATE_FUNC(EffectOutline);

    bool init()
    {
        initProgramState("custom/example_Outline_fs");

        Vec3 color(1.0f, 0.2f, 0.3f);
        float radius    = 0.01f;
        float threshold = 1.75;

        SET_UNIFORM(_programState, "u_outlineColor", color);
        SET_UNIFORM(_programState, "u_radius", radius);
        SET_UNIFORM(_programState, "u_threshold", threshold);
        return true;
    }
};

// Noise
class EffectNoise : public Effect
{
public:
    CREATE_FUNC(EffectNoise);

protected:
    bool init()
    {
        initProgramState("custom/example_Noisy_fs");
        return true;
    }

    virtual void setTarget(EffectSprite* sprite) override
    {
        auto s = sprite->getTexture()->getContentSizeInPixels();
        SET_UNIFORM(_programState, "resolution", Vec2(s.width, s.height));
    }
};

// Edge Detect
class EffectEdgeDetect : public Effect
{
public:
    CREATE_FUNC(EffectEdgeDetect);

protected:
    bool init()
    {
        initProgramState("custom/example_EdgeDetection_fs");
        return true;
    }

    virtual void setTarget(EffectSprite* sprite) override
    {
        auto s = sprite->getTexture()->getContentSizeInPixels();
        SET_UNIFORM(_programState, "resolution", Vec2(s.width, s.height));
    }
};

// Grey
class EffectGreyScale : public Effect
{
public:
    CREATE_FUNC(EffectGreyScale);

protected:
    bool init()
    {
        initProgramState("custom/example_GreyScale_fs");
        return true;
    }
};

// Sepia
class EffectSepia : public Effect
{
public:
    CREATE_FUNC(EffectSepia);

protected:
    bool init()
    {
        initProgramState("custom/example_Sepia_fs");
        return true;
    }
};

// bloom
class EffectBloom : public Effect
{
public:
    CREATE_FUNC(EffectBloom);

protected:
    bool init()
    {
        initProgramState("custom/example_Bloom_fs");
        return true;
    }

    virtual void setTarget(EffectSprite* sprite) override
    {
        auto s = sprite->getTexture()->getContentSizeInPixels();
        SET_UNIFORM(_programState, "resolution", Vec2(s.width, s.height));
    }
};

// cel shading
class EffectCelShading : public Effect
{
public:
    CREATE_FUNC(EffectCelShading);

protected:
    bool init()
    {
        initProgramState("custom/example_CelShading_fs");
        return true;
    }

    virtual void setTarget(EffectSprite* sprite) override
    {
        auto s = sprite->getTexture()->getContentSizeInPixels();
        SET_UNIFORM(_programState, "resolution", Vec2(s.width, s.height));
    }
};

// Lens Flare
class EffectLensFlare : public Effect
{
public:
    CREATE_FUNC(EffectLensFlare);

protected:
    bool init()
    {
        initProgramState("custom/example_LensFlare_fs");
        return true;
    }

    virtual void setTarget(EffectSprite* sprite) override
    {
        auto s = sprite->getTexture()->getContentSizeInPixels();
        SET_UNIFORM(_programState, "textureResolution", Vec2(s.width, s.height));
        s = Director::getInstance()->getWinSize();
        SET_UNIFORM(_programState, "resolution", Vec2(s.width, s.height));
    }
};

class EffectNormalMapped : public Effect
{
public:
    CREATE_FUNC(EffectNormalMapped);
    static EffectNormalMapped* create(std::string_view normalMapFileName)
    {
        EffectNormalMapped* normalMappedSprite = new EffectNormalMapped();
        if (normalMappedSprite->init() && normalMappedSprite->initNormalMap(normalMapFileName))
        {

            normalMappedSprite->autorelease();
            return normalMappedSprite;
        }
        AX_SAFE_DELETE(normalMappedSprite);
        return nullptr;
    }
    void setKBump(float value);
    void setLightPos(const Vec3& pos);
    void setLightColor(const Color4F& color);
    float getKBump() const { return _kBump; }

protected:
    bool init();
    bool initNormalMap(std::string_view normalMapFileName);
    virtual void setTarget(EffectSprite* sprite) override;
    EffectSprite* _sprite;
    Vec3 _lightPos;
    Color4F _lightColor;
    float _kBump;
};

bool EffectNormalMapped::init()
{
    initProgramState("custom/Normal_fs");
    _kBump = 2;
    return true;
}
bool EffectNormalMapped::initNormalMap(std::string_view normalMapFileName)
{
    auto normalMapTexture = Director::getInstance()->getTextureCache()->addImage(normalMapFileName);
    SET_TEXTURE(_programState, "u_normalMap", 1, normalMapTexture->getBackendTexture());
    return true;
}
void EffectNormalMapped::setTarget(EffectSprite* sprite)
{
    _sprite = sprite;
    SET_UNIFORM(_programState, "u_kBump", _kBump);
    SET_UNIFORM(_programState, "u_contentSize", Vec2(sprite->getContentSize().width, sprite->getContentSize().height));
}

void EffectNormalMapped::setKBump(float value)
{
    _kBump = value;
    SET_UNIFORM(_programState, "u_kBump", _kBump);
}

void EffectNormalMapped::setLightPos(const Vec3& pos)
{
    _lightPos = pos;
    SET_UNIFORM(_programState, "u_lightPosInLocalSpace", Vec4(_lightPos.x, _lightPos.y, _lightPos.z, 1));
}

void EffectNormalMapped::setLightColor(const Color4F& color)
{
    _lightColor = color;
    SET_UNIFORM(_programState, "u_diffuseL", Vec3(_lightColor.r, _lightColor.g, _lightColor.b));
}

EffectSpriteTest::EffectSpriteTest() {}

bool EffectSpriteTest::init()
{
    if (ShaderTestDemo2::init())
    {

        auto layer = LayerColor::create(Color4B::BLUE);
        this->addChild(layer);

        auto s = Director::getInstance()->getWinSize();

        auto itemPrev = MenuItemImage::create("Images/b1.png", "Images/b2.png", [&](Ref* sender) {
            _vectorIndex--;
            if (_vectorIndex < 0)
                _vectorIndex = _effects.size() - 1;
            _sprite->setEffect(_effects.at(_vectorIndex));
        });

        auto itemNext = MenuItemImage::create("Images/f1.png", "Images/f2.png", [&](Ref* sender) {
            _vectorIndex++;
            if (_vectorIndex >= _effects.size())
                _vectorIndex = 0;
            _sprite->setEffect(_effects.at(_vectorIndex));
        });

        auto menu = Menu::create(itemPrev, itemNext, nullptr);
        menu->alignItemsHorizontally();
        menu->setScale(0.5);
        menu->setAnchorPoint(Vec2(0.0f, 0.0f));
        menu->setPosition(Vec2(s.width / 2, 70.0f));
        addChild(menu);

        _sprite = EffectSprite::create("Images/grossini.png");
        _sprite->setPosition(Vec2(0.0f, s.height / 2));
        addChild(_sprite);

        auto jump   = JumpBy::create(4, Vec2(s.width, 0.0f), 100, 4);
        auto rot    = RotateBy::create(4, 720);
        auto spawn  = Spawn::create(jump, rot, nullptr);
        auto rev    = spawn->reverse();
        auto seq    = Sequence::create(spawn, rev, nullptr);
        auto repeat = RepeatForever::create(seq);
        _sprite->runAction(repeat);

        // set the Effects
        _effects.pushBack(EffectBlur::create());
        _effects.pushBack(EffectOutline::create());
        _effects.pushBack(EffectNoise::create());
        _effects.pushBack(EffectEdgeDetect::create());
        _effects.pushBack(EffectGreyScale::create());
        _effects.pushBack(EffectSepia::create());
        _effects.pushBack(EffectBloom::create());
        _effects.pushBack(EffectCelShading::create());
        _effects.pushBack(EffectLensFlare::create());

        _vectorIndex = 0;
        _sprite->setEffect(_effects.at(_vectorIndex));

        //        _sprite->addEffect( _effects.at(8), -10 );
        //        _sprite->addEffect( _effects.at(1), 1 );

        return true;
    }
    return false;
}

EffectSpriteLamp::EffectSpriteLamp() {}

bool EffectSpriteLamp::init()
{
    if (ShaderTestDemo2::init())
    {

        auto s  = Director::getInstance()->getWinSize();
        _sprite = EffectSprite::create("Images/elephant1_Diffuse.png");
        // auto contentSize = _sprite->getContentSize();
        _sprite->setPosition(Vec2(s.width / 2, s.height / 2));
        addChild(_sprite);

        auto lampEffect = EffectNormalMapped::create("Images/elephant1_Normal.png");

        Vec3 pos(150, 150, 50);
        _lightSprite = Sprite::create("Images/ball.png");
        this->addChild(_lightSprite);
        _lightSprite->setPosition(Vec2(pos.x, s.height - pos.y));
        Mat4 mat = _sprite->getNodeToWorldTransform();
        Point lightPosInLocalSpace =
            PointApplyAffineTransform(Vec2(pos.x, pos.y), _sprite->getWorldToNodeAffineTransform());
        lampEffect->setLightColor(Color4F(1, 1, 1, 1));
        lampEffect->setLightPos(Vec3(lightPosInLocalSpace.x, lightPosInLocalSpace.y, 50.0f));
        lampEffect->setKBump(2);
        _sprite->setEffect(lampEffect);
        _effect                  = lampEffect;
        auto listener            = EventListenerTouchAllAtOnce::create();
        listener->onTouchesBegan = AX_CALLBACK_2(EffectSpriteLamp::onTouchesBegan, this);
        listener->onTouchesMoved = AX_CALLBACK_2(EffectSpriteLamp::onTouchesMoved, this);
        listener->onTouchesEnded = AX_CALLBACK_2(EffectSpriteLamp::onTouchesEnded, this);
        _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
        return true;
    }
    return false;
}

void EffectSpriteLamp::onTouchesBegan(const std::vector<Touch*>& touches, Event* unused_event)
{
    for (auto&&item : touches)
    {
        auto touch         = item;
        auto s             = Director::getInstance()->getWinSize();
        Point loc_winSpace = touch->getLocationInView();
        _lightSprite->setPosition(Vec2(loc_winSpace.x, s.height - loc_winSpace.y));
        Vec3 pos(loc_winSpace.x, loc_winSpace.y, 50);
        Mat4 mat = _sprite->getNodeToWorldTransform();
        Point lightPosInLocalSpace =
            PointApplyAffineTransform(Vec2(pos.x, pos.y), _sprite->getWorldToNodeAffineTransform());
        ((EffectNormalMapped*)_effect)->setLightPos(Vec3(lightPosInLocalSpace.x, lightPosInLocalSpace.y, 50.0f));
    }
}

void EffectSpriteLamp::onTouchesMoved(const std::vector<Touch*>& touches, Event* unused_event)
{
    for (auto&&item : touches)
    {
        auto touch         = item;
        auto s             = Director::getInstance()->getWinSize();
        Point loc_winSpace = touch->getLocationInView();
        _lightSprite->setPosition(Vec2(loc_winSpace.x, s.height - loc_winSpace.y));
        Vec3 pos(loc_winSpace.x, loc_winSpace.y, 50);
        Mat4 mat = _sprite->getNodeToWorldTransform();
        Point lightPosInLocalSpace =
            PointApplyAffineTransform(Vec2(pos.x, pos.y), _sprite->getWorldToNodeAffineTransform());
        ((EffectNormalMapped*)_effect)->setLightPos(Vec3(lightPosInLocalSpace.x, lightPosInLocalSpace.y, 50.0f));
    }
}

void EffectSpriteLamp::onTouchesEnded(const std::vector<Touch*>& touches, Event* unused_event)
{
    for (auto&&item : touches)
    {
        auto touch         = item;
        auto s             = Director::getInstance()->getWinSize();
        Point loc_winSpace = touch->getLocationInView();
        _lightSprite->setPosition(Vec2(loc_winSpace.x, s.height - loc_winSpace.y));
        Vec3 pos(loc_winSpace.x, loc_winSpace.y, 50);
        Mat4 mat = _sprite->getNodeToWorldTransform();
        Point lightPosInLocalSpace =
            PointApplyAffineTransform(Vec2(pos.x, pos.y), _sprite->getWorldToNodeAffineTransform());
        ((EffectNormalMapped*)_effect)->setLightPos(Vec3(lightPosInLocalSpace.x, lightPosInLocalSpace.y, 50.0f));
    }
}