metaforce/Runtime/Particle/CElementGen.cpp

#include "CElementGen.hpp"
#include "CGenDescription.hpp"
#include "CSwooshDescription.hpp"
#include "CElectricDescription.hpp"
#include "CParticleGlobals.hpp"
#include "CParticleSwoosh.hpp"
#include "CParticleElectric.hpp"
#include "Graphics/CModel.hpp"
#include "Graphics/Shaders/CElementGenShaders.hpp"
#include "Character/CActorLights.hpp"
#include "CWarp.hpp"

#define MAX_GLOBAL_PARTICLES 2560

namespace urde
{
static logvisor::Module Log("urde::CElementGen");

URDE_DECL_SPECIALIZE_SHADER(CElementGenShaders)

u16 CElementGen::g_GlobalSeed = 99;
bool CElementGen::g_subtractBlend = false;

int CElementGen::g_ParticleAliveCount;
int CElementGen::g_ParticleSystemAliveCount;
bool CElementGen::g_ParticleSystemInitialized = false;
bool CElementGen::sMoveRedToAlphaBuffer = false;
CParticle* CElementGen::g_currentParticle = nullptr;

std::vector<SParticleInstanceTex> g_instTexData;
std::vector<SParticleInstanceIndTex> g_instIndTexData;
std::vector<SParticleInstanceNoTex> g_instNoTexData;

void CElementGen::Initialize()
{
    if (g_ParticleSystemInitialized)
        return;

    g_ParticleAliveCount = 0;
    g_ParticleSystemAliveCount = 0;
    g_ParticleSystemInitialized = true;

    /* Compile shaders */
    TShader<CElementGenShaders>::Initialize();
}

void CElementGen::Shutdown()
{
    TShader<CElementGenShaders>::Shutdown();
}

static const size_t ShadClsSizes[] =
{
    sizeof(SParticleInstanceTex),
    sizeof(SParticleInstanceIndTex),
    sizeof(SParticleInstanceNoTex)
};

CElementGen::CElementGen(const TToken<CGenDescription>& gen,
                         EModelOrientationType orientType,
                         EOptionalSystemFlags flags)
: x1c_genDesc(gen), x2c_orientType(orientType),
  x27c_randState(x94_randomSeed)
{
    CGenDescription* desc = x1c_genDesc.GetObj();
    x28_loadedGenDesc = desc;

    x26d_27_enableOPTS = (flags & EOptionalSystemFlags::Two) != EOptionalSystemFlags::None;

    if (desc->x54_x40_TEXR)
        desc->x54_x40_TEXR->GetValueTexture(0).GetObj();
    if (desc->x58_x44_TIND)
        desc->x58_x44_TIND->GetValueTexture(0).GetObj();

    if (CIntElement* seedElem = desc->x1c_x10_SEED.get())
    {
        int seedVal;
        seedElem->GetValue(x74_curFrame, seedVal);
        x94_randomSeed = seedVal;
    }
    x27c_randState.SetSeed(x94_randomSeed);
    ++g_ParticleSystemAliveCount;
    x26c_25_LIT_ = desc->x44_29_x30_29_LIT_;
    x26c_26_AAPH = desc->x44_26_x30_26_AAPH;
    x26c_27_ZBUF = desc->x44_27_x30_27_ZBUF;
    x26c_28_zTest = true;
    x26c_29_ORNT = desc->x30_30_ORNT;
    x26c_30_MBLR = x26c_29_ORNT ? false : desc->x44_30_x31_24_MBLR;

    if (CIntElement* mbspElem = desc->x48_x34_MBSP.get())
        mbspElem->GetValue(x74_curFrame, x270_MBSP);
    m_maxMBSP = x270_MBSP;

    if (CModVectorElement* elem = desc->x7c_x68_VEL1.get())
    {
        x280_VELSources[0] = elem;
        x278_hasVMD[0] = desc->x45_26_x31_28_VMD1;
    }

    if (CModVectorElement* elem = desc->x80_x6c_VEL2.get())
    {
        x280_VELSources[1] = elem;
        x278_hasVMD[1] = desc->x45_27_x31_29_VMD2;
    }

    if (CModVectorElement* elem = desc->x84_x70_VEL3.get())
    {
        x280_VELSources[2] = elem;
        x278_hasVMD[2] = desc->x45_28_x31_30_VMD3;
    }

    if (CModVectorElement* elem = desc->x88_x74_VEL4.get())
    {
        x280_VELSources[3] = elem;
        x278_hasVMD[3] = desc->x45_29_x31_31_VMD4;
    }

    if (desc->x10c_ADV1 || desc->x110_ADV2 || desc->x114_ADV3 || desc->x118_ADV4 ||
        desc->x11c_ADV5 || desc->x120_ADV6 || desc->x124_ADV7 || desc->x128_ADV8)
        x26d_28_enableADV = true;

    if (CIntElement* cssdElem = desc->xa0_x8c_CSSD.get())
        cssdElem->GetValue(0, x2a0_CSSD);

    if (CIntElement* pisyElem = desc->xc8_xb4_PISY.get())
    {
        pisyElem->GetValue(0, x2a8_PISY);
        if (x2a8_PISY <= 0)
            x2a8_PISY = 1;
    }

    if (CIntElement* sisyElem = desc->xcc_xb8_SISY.get())
        sisyElem->GetValue(0, x2a4_SISY);

    if (CIntElement* sssdElem = desc->xe4_xd0_SSSD.get())
        sssdElem->GetValue(0, x2ac_SSSD);

    if (CVectorElement* sspoElem = desc->xe8_xd4_SSPO.get())
    {
        sspoElem->GetValue(0, x2b0_SSPO);
        if (!sspoElem->IsFastConstant())
            x26c_24_translationDirty = true;
    }

    if (CIntElement* sesdElem = desc->xf8_xe4_SESD.get())
        sesdElem->GetValue(0, x2bc_SESD);

    if (CVectorElement* sepoElem = desc->xfc_xe8_SEPO.get())
    {
        sepoElem->GetValue(0, x2c0_SEPO);
        if (!sepoElem->IsFastConstant())
            x26c_24_translationDirty = true;
    }

    if (CVectorElement* pofsElem = desc->x18_xc_POFS.get())
    {
        pofsElem->GetValue(x74_curFrame, xf4_POFS);
        if (!pofsElem->IsFastConstant())
            x26c_24_translationDirty = true;
    }

    if (CIntElement* psltElem = desc->xc_x0_PSLT.get())
        psltElem->GetValue(0, x268_PSLT);
    else
        x268_PSLT = INT_MAX;

    if (CIntElement* maxpElem = desc->x28_x1c_MAXP.get())
        maxpElem->GetValue(x74_curFrame, x90_MAXP);

    int useMAXP = std::min(x90_MAXP, 256);
    x30_particles.reserve(useMAXP);
    if (x2c_orientType == EModelOrientationType::One)
        x50_parentMatrices.resize(useMAXP);

    x26c_31_LINE = desc->x44_24_x30_24_LINE;
    x26d_24_FXLL = desc->x44_25_x30_25_FXLL;

    if (CIntElement* ltypElem = desc->x100_xec_LTYP.get())
    {
        int ltyp;
        ltypElem->GetValue(x74_curFrame, ltyp);
        switch (LightType(ltyp))
        {
        case LightType::None:
        default:
            x308_lightType = LightType::None;
            break;
        case LightType::Directional:
            x308_lightType = LightType::Directional;
            break;
        case LightType::Custom:
            x308_lightType = LightType::Custom;
            break;
        case LightType::Spot:
            x308_lightType = LightType::Spot;
            break;
        }
    }

    if (CIntElement* lfotElem = desc->x114_x100_LFOT.get())
    {
        int lfot;
        lfotElem->GetValue(x74_curFrame, lfot);
        switch (EFalloffType(lfot))
        {
        case EFalloffType::Constant:
            x32c_falloffType = EFalloffType::Constant;
            break;
        case EFalloffType::Linear:
        default:
            x32c_falloffType = EFalloffType::Linear;
            break;
        case EFalloffType::Quadratic:
            x32c_falloffType = EFalloffType::Quadratic;
            break;
        }
    }

    if (x26c_31_LINE)
    {
        CUVElement* texr = desc->x54_x40_TEXR.get();
        boo::ObjToken<boo::ITexture> tex;
        if (texr)
            tex = texr->GetValueTexture(0).GetObj()->GetBooTexture();
        int maxVerts = (x90_MAXP == 0 ? 256 : x90_MAXP);
        m_lineRenderer.reset(new CLineRenderer(CLineRenderer::EPrimitiveMode::Lines,
                                               maxVerts * 2, tex, x26c_26_AAPH));
    }
    else
    {
        m_shaderClass = CElementGenShaders::GetShaderClass(*this);
    }

    size_t maxInsts = x26c_30_MBLR ? (m_maxMBSP * x90_MAXP) : x90_MAXP;
    maxInsts = (maxInsts == 0 ? 256 : maxInsts);

    CGraphics::CommitResources([&](boo::IGraphicsDataFactory::Context& ctx) -> bool
    {
        if (!x26c_31_LINE)
        {
            m_instBuf = ctx.newDynamicBuffer(boo::BufferUse::Vertex, ShadClsSizes[int(m_shaderClass)], maxInsts);
            m_uniformBuf = ctx.newDynamicBuffer(boo::BufferUse::Uniform, sizeof(SParticleUniforms), 1);
        }
        if (desc->x45_24_x31_26_PMUS)
        {
            m_instBufPmus = ctx.newDynamicBuffer(boo::BufferUse::Vertex, ShadClsSizes[int(m_shaderClass)], maxInsts);
            m_uniformBufPmus = ctx.newDynamicBuffer(boo::BufferUse::Uniform, sizeof(SParticleUniforms), 1);
        }
        CElementGenShaders::BuildShaderDataBinding(ctx, *this);
        return true;
    });
}

CElementGen::~CElementGen()
{
    --g_ParticleSystemAliveCount;
    g_ParticleAliveCount -= x30_particles.size();
}

bool CElementGen::Update(double t)
{
    CParticleGlobals::SParticleSystem* prevSystem = CParticleGlobals::g_currentParticleSystem;
    CParticleGlobals::SParticleSystem thisSystem { FOURCC('PART'), this };
    CParticleGlobals::g_currentParticleSystem = &thisSystem;
    CGenDescription* desc = x1c_genDesc.GetObj();
    CIntElement* pswtElem = desc->x10_x4_PSWT.get();
    if (pswtElem && !x26d_25_warmedUp)
    {
        int pswt = 0;
        pswtElem->GetValue(x74_curFrame, pswt);
        Log.report(logvisor::Info,
                   "Running warmup on particle system 0x%08x for %d ticks.",
                   desc, pswt);
        InternalUpdate(pswt / 60.0);
        x26d_25_warmedUp = true;
    }
    bool ret = InternalUpdate(t);
    CParticleGlobals::g_currentParticleSystem = prevSystem;
    return ret;
}

bool CElementGen::InternalUpdate(double dt)
{
    CGlobalRandom gr(x27c_randState);
    CGenDescription* desc = x1c_genDesc.GetObj();

    double dt1 = 1.0 / 60.0;
    if (std::fabs(dt - 1.0 / 60.0) >= 1.0 / 60000.0)
        dt1 = dt;
    double t = x74_curFrame / 60.0;
    CParticleGlobals::SetEmitterTime(x74_curFrame);

    if (CRealElement* pstsElem = desc->x14_x8_PSTS.get())
    {
        float psts;
        pstsElem->GetValue(x74_curFrame, psts);
        double dt1Scaled = psts * dt1;
        dt1 = std::max(0.0, dt1Scaled);
    }

    x78_curSeconds += dt1;

    if (x26c_30_MBLR && dt > 0.0)
    {
        if (CIntElement* mbspElem = desc->x48_x34_MBSP.get())
            mbspElem->GetValue(x74_curFrame, x270_MBSP);
        x270_MBSP = std::min(x270_MBSP, m_maxMBSP);
    }

    int frameUpdateCount = 0;
    while (t < x78_curSeconds && std::fabs(t - x78_curSeconds) >= 1.0 / 60000.0)
    {
        x2d4_aabbMin.splat(FLT_MAX);
        x2e0_aabbMax.splat(-FLT_MAX);
        x2ec_maxSize = 0.f;
        CParticleGlobals::SetEmitterTime(x74_curFrame);
        UpdateExistingParticles();
        CParticleGlobals::SetParticleLifetime(x268_PSLT);

        if (x74_curFrame < x268_PSLT && x88_particleEmission)
        {
            float grte = 0.f;
            if (CRealElement* grteElem = desc->x2c_x20_GRTE.get())
            {
                if (grteElem->GetValue(x74_curFrame, grte))
                {
                    x30_particles.clear();
                    return true;
                }
            }

            grte = std::max(0.f, grte * x98_generatorRate);
            x8c_generatorRemainder += grte;
            int genCount = floorf(x8c_generatorRemainder);
            x8c_generatorRemainder = x8c_generatorRemainder - genCount;

            if (CIntElement* maxpElem = desc->x28_x1c_MAXP.get())
                maxpElem->GetValue(x74_curFrame, x90_MAXP);

            CreateNewParticles(genCount);
        }

        if (x26c_24_translationDirty)
            UpdatePSTranslationAndOrientation();

        if (x308_lightType != LightType::None)
            UpdateLightParameters();

        UpdateChildParticleSystems(1 / 60.0);

        ++frameUpdateCount;
        ++x74_curFrame;
        t += 1 / 60.0;
    }

    if (std::fabs(t - x78_curSeconds) < 1.0 / 60000.0)
    {
        x78_curSeconds = t;
        x80_timeDeltaScale = 1.f;
    }
    else
    {
        UpdateChildParticleSystems(dt1 - (frameUpdateCount / 60.0));
        x80_timeDeltaScale = 1.f - (t - x78_curSeconds) * 60.f;
    }

    BuildParticleSystemBounds();

    return false;
}

void CElementGen::AccumulateBounds(zeus::CVector3f& pos, float size)
{
    x2e0_aabbMax[0] = std::max(pos[0], x2e0_aabbMax[0]);
    x2e0_aabbMax[1] = std::max(pos[1], x2e0_aabbMax[1]);
    x2e0_aabbMax[2] = std::max(pos[2], x2e0_aabbMax[2]);
    x2d4_aabbMin[0] = std::min(pos[0], x2d4_aabbMin[0]);
    x2d4_aabbMin[1] = std::min(pos[1], x2d4_aabbMin[1]);
    x2d4_aabbMin[2] = std::min(pos[2], x2d4_aabbMin[2]);
    x2ec_maxSize = std::max(size, x2ec_maxSize);
}

void CElementGen::UpdateAdvanceAccessParameters(u32 activeParticleCount, u32 particleFrame)
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    std::array<float, 8>& arr = x60_advValues[activeParticleCount];
    CParticleGlobals::g_particleAccessParameters = &arr;

    if (CRealElement* adv1 = desc->x10c_ADV1.get())
        adv1->GetValue(particleFrame, arr[0]);
    if (CRealElement* adv2 = desc->x110_ADV2.get())
        adv2->GetValue(particleFrame, arr[1]);
    if (CRealElement* adv3 = desc->x114_ADV3.get())
        adv3->GetValue(particleFrame, arr[2]);
    if (CRealElement* adv4 = desc->x118_ADV4.get())
        adv4->GetValue(particleFrame, arr[3]);
    if (CRealElement* adv5 = desc->x11c_ADV5.get())
        adv5->GetValue(particleFrame, arr[4]);
    if (CRealElement* adv6 = desc->x120_ADV6.get())
        adv6->GetValue(particleFrame, arr[5]);
    if (CRealElement* adv7 = desc->x124_ADV7.get())
        adv7->GetValue(particleFrame, arr[6]);
    if (CRealElement* adv8 = desc->x128_ADV8.get())
        adv8->GetValue(particleFrame, arr[7]);
}

bool CElementGen::UpdateVelocitySource(u32 idx, u32 particleFrame, CParticle& particle)
{
    bool err;
    if (x278_hasVMD[idx])
    {
        zeus::CVector3f localVel = x208_orientationInverse * particle.x1c_vel;
        zeus::CVector3f localPos = x208_orientationInverse * (particle.x4_pos - xdc_translation);
        err = x280_VELSources[idx]->GetValue(particleFrame, localVel, localPos);
        particle.x1c_vel = x1d8_orientation.rotate(localVel);
        particle.x4_pos = x1d8_orientation.rotate(localVel) + xdc_translation;
    }
    else
    {
        err = x280_VELSources[idx]->GetValue(particleFrame, particle.x1c_vel, particle.x4_pos);
    }

    if (err)
    {
        particle.x0_endFrame = -1;
        return true;
    }

    return false;
}

void CElementGen::UpdateExistingParticles()
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    x25c_activeParticleCount = 0;
    CParticleGlobals::SetEmitterTime(x74_curFrame);
    CParticleGlobals::g_particleAccessParameters = &x60_advValues[x25c_activeParticleCount];

    for (auto it = x30_particles.begin(); it != x30_particles.end();)
    {
        CParticle& particle = *it;

        if (particle.x0_endFrame < x74_curFrame)
        {
            --g_ParticleAliveCount;
            if (it+1 == x30_particles.end())
            {
                x30_particles.pop_back();
                break;
            }
            else
            {
                particle = x30_particles.back();

                if (x2c_orientType == EModelOrientationType::One)
                    x50_parentMatrices[x25c_activeParticleCount] = x50_parentMatrices[x30_particles.size()-1];

                if (x26d_28_enableADV)
                    x60_advValues[x25c_activeParticleCount] = x60_advValues[x30_particles.size()-1];

                x30_particles.pop_back();
                if (particle.x0_endFrame < x74_curFrame)
                    continue;
            }
        }

        particle.x10_prevPos = particle.x4_pos;
        particle.x4_pos += particle.x1c_vel;

        g_currentParticle = &particle;

        CParticleGlobals::SetParticleLifetime(particle.x0_endFrame - particle.x28_startFrame);
        int particleFrame = x74_curFrame - particle.x28_startFrame;
        CParticleGlobals::UpdateParticleLifetimeTweenValues(particleFrame);

        if (x26d_28_enableADV)
            UpdateAdvanceAccessParameters(x25c_activeParticleCount, particleFrame);

        ++x25c_activeParticleCount;

        for (int i=0 ; i<4 ; ++i)
        {
            if (!x280_VELSources[i])
                break;
            UpdateVelocitySource(i, particleFrame, particle);
        }

        if (x26c_31_LINE)
        {
            if (CRealElement* leng = desc->x20_x14_LENG.get())
                leng->GetValue(particleFrame, particle.x2c_lineLengthOrSize);
            if (CRealElement* widt = desc->x24_x18_WIDT.get())
                widt->GetValue(particleFrame, particle.x30_lineWidthOrRota);
        }
        else
        {
            if (CRealElement* rota = desc->x50_x3c_ROTA.get())
                rota->GetValue(particleFrame, particle.x30_lineWidthOrRota);
            if (CRealElement* size = desc->x4c_x38_SIZE.get())
                size->GetValue(particleFrame, particle.x2c_lineLengthOrSize);
        }

        if (CColorElement* colr = desc->x30_x24_COLR.get())
            colr->GetValue(particleFrame, particle.x34_color);

        AccumulateBounds(particle.x4_pos, particle.x2c_lineLengthOrSize);
        ++it;
    }

    if (x30_particles.empty())
        return;

    for (CWarp* warp : x4_modifierList)
        if (warp->UpdateWarp())
            warp->ModifyParticles(x30_particles);
}

void CElementGen::CreateNewParticles(int count)
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    if (!g_ParticleSystemInitialized)
        Initialize();
    if (!count || x30_particles.size() >= x90_MAXP)
        return;

    if (count + x30_particles.size() > x90_MAXP)
        count = x90_MAXP - x30_particles.size();
    int newTotalCount = g_ParticleAliveCount + count;
    if (newTotalCount > 2560)
        count = 2560 - g_ParticleAliveCount;

    CGlobalRandom gr(x27c_randState);
    x30_particles.reserve(x90_MAXP);
    if (x26d_28_enableADV && x60_advValues.empty())
        x60_advValues.resize(x90_MAXP);

    CParticleGlobals::g_particleAccessParameters = nullptr;

    for (int i=0 ; i<count ; ++i)
    {
        x30_particles.emplace_back();
        ++g_ParticleAliveCount;
        ++x25c_activeParticleCount;
        ++x260_cumulativeParticles;
        if (x2c_orientType == EModelOrientationType::One)
            x50_parentMatrices[x30_particles.size()-1] = x1d8_orientation.buildMatrix3f();

        CParticle& particle = x30_particles.back();
        particle.x28_startFrame = x74_curFrame;
        if (CIntElement* ltme = desc->x34_x28_LTME.get())
            ltme->GetValue(0, particle.x0_endFrame);
        CParticleGlobals::SetParticleLifetime(particle.x0_endFrame);
        CParticleGlobals::UpdateParticleLifetimeTweenValues(0);
        g_currentParticle = &particle;
        if (x26d_28_enableADV)
            UpdateAdvanceAccessParameters(x30_particles.size()-1, 0);
        particle.x0_endFrame += x74_curFrame;

        if (CColorElement* colr = desc->x30_x24_COLR.get())
            colr->GetValue(0, particle.x34_color);
        else
            particle.x34_color = zeus::CColor::skWhite;

        if (CEmitterElement* emtr = desc->x40_x2c_EMTR.get())
        {
            emtr->GetValue(x74_curFrame, particle.x4_pos, particle.x1c_vel);
            zeus::CVector3f compXf1 = (x13c_globalScaleTransformInverse * x1a8_localScaleTransformInverse) * xdc_translation;
            zeus::CVector3f compXf2 = x1d8_orientation.rotate(particle.x4_pos);
            particle.x4_pos = compXf1 + compXf2 + xf4_POFS;
            particle.x1c_vel = x1d8_orientation.rotate(particle.x1c_vel);
        }
        else
        {
            zeus::CVector3f compXf1 = (x13c_globalScaleTransformInverse * x1a8_localScaleTransformInverse) * xdc_translation;
            particle.x4_pos = compXf1 + xf4_POFS;
            particle.x1c_vel.zeroOut();
        }
        particle.x10_prevPos = particle.x4_pos;

        if (x26c_31_LINE)
        {
            if (CRealElement* leng = desc->x20_x14_LENG.get())
                leng->GetValue(0, particle.x2c_lineLengthOrSize);
            else
                particle.x2c_lineLengthOrSize = 1.f;

            if (CRealElement* widt = desc->x24_x18_WIDT.get())
                widt->GetValue(0, particle.x30_lineWidthOrRota);
            else
                particle.x30_lineWidthOrRota = 1.f;
        }
        else
        {
            if (CRealElement* rota = desc->x50_x3c_ROTA.get())
                rota->GetValue(0, particle.x30_lineWidthOrRota);
            else
                particle.x30_lineWidthOrRota = 0.f;

            if (CRealElement* size = desc->x4c_x38_SIZE.get())
                size->GetValue(0, particle.x2c_lineLengthOrSize);
            else
                particle.x2c_lineLengthOrSize = 0.1f;
        }

        AccumulateBounds(particle.x4_pos, particle.x2c_lineLengthOrSize);
    }
}

void CElementGen::UpdatePSTranslationAndOrientation()
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    CGlobalRandom gr(x27c_randState);
    if (x268_PSLT < x74_curFrame)
        return;

    if (CVectorElement* pofs = desc->x18_xc_POFS.get())
        pofs->GetValue(x74_curFrame, xf4_POFS);

    if (CVectorElement* sspo = desc->xe8_xd4_SSPO.get())
        sspo->GetValue(x74_curFrame, x2b0_SSPO);

    if (CVectorElement* sepo = desc->xfc_xe8_SEPO.get())
        sepo->GetValue(x74_curFrame, x2c0_SEPO);
}

std::unique_ptr<CParticleGen> CElementGen::ConstructChildParticleSystem(const TToken<CGenDescription>& desc)
{
    CElementGen* ret = new CElementGen(desc, EModelOrientationType::Normal,
        x26d_27_enableOPTS ? EOptionalSystemFlags::Two : EOptionalSystemFlags::One);
    ret->x26d_26_modelsUseLights = x26d_26_modelsUseLights;
    ret->SetGlobalTranslation(xe8_globalTranslation);
    ret->SetGlobalOrientation(x22c_globalOrientation);
    ret->SetGlobalScale(x100_globalScale);
    ret->SetLocalScale(x16c_localScale);
    ret->SetTranslation(xdc_translation);
    ret->SetOrientation(x1d8_orientation);
    ret->SetParticleEmission(x88_particleEmission);
    ret->SetModulationColor(x338_moduColor);
    return std::unique_ptr<CParticleGen>(ret);
}

void CElementGen::UpdateChildParticleSystems(double dt)
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    CGlobalRandom gr(x27c_randState);

    SChildGeneratorDesc& icts = desc->x8c_x78_ICTS;
    if (icts.m_found && x84_prevFrame != x74_curFrame && x2a0_CSSD == x74_curFrame)
    {
        int ncsyVal = 1;
        if (CIntElement* ncsy = desc->x9c_x88_NCSY.get())
            ncsy->GetValue(x74_curFrame, ncsyVal);

        CGenDescription* ictsDesc = icts.m_token.GetObj();
        if (!(x26d_27_enableOPTS && ictsDesc->x45_31_x32_25_OPTS))
        {
            x290_activePartChildren.reserve(ncsyVal + x290_activePartChildren.size());
            for (int i=0 ; i<ncsyVal ; ++i)
            {
                std::unique_ptr<CParticleGen> chGen = ConstructChildParticleSystem(icts.m_token);
                x290_activePartChildren.emplace_back(std::move(chGen));
            }
        }
    }

    SChildGeneratorDesc& iits = desc->xb8_xa4_IITS;
    if (iits.m_found && x84_prevFrame != x74_curFrame && x74_curFrame < x268_PSLT &&
        x88_particleEmission == 1 && x74_curFrame >= x2a4_SISY &&
        ((x74_curFrame - x2a4_SISY) % x2a8_PISY) == 0)
    {
        CGenDescription* iitsDesc = iits.m_token.GetObj();
        if (!(x26d_27_enableOPTS && iitsDesc->x45_31_x32_25_OPTS))
        {
            std::unique_ptr<CParticleGen> chGen = ConstructChildParticleSystem(iits.m_token);
            x290_activePartChildren.emplace_back(std::move(chGen));
        }
    }

    CSpawnSystemKeyframeData* kssm = desc->xd0_xbc_KSSM.get();
    if (kssm && x84_prevFrame != x74_curFrame && x74_curFrame < x268_PSLT)
    {
        u16 backupSeed = g_GlobalSeed;
        u16 incSeed = backupSeed;

        std::vector<CSpawnSystemKeyframeData::CSpawnSystemKeyframeInfo>& systems =
        kssm->GetSpawnedSystemsAtFrame(x74_curFrame);
        x290_activePartChildren.reserve(x290_activePartChildren.size() + systems.size());
        for (CSpawnSystemKeyframeData::CSpawnSystemKeyframeInfo& system : systems)
        {
            TLockedToken<CGenDescription>& token = system.GetToken();
            if (!(x26d_27_enableOPTS && token.GetObj()->x45_31_x32_25_OPTS))
            {
                g_GlobalSeed = incSeed;
                std::unique_ptr<CParticleGen> chGen = ConstructChildParticleSystem(token);
                x290_activePartChildren.emplace_back(std::move(chGen));
            }
            incSeed += 1;
        }

        g_GlobalSeed = backupSeed;
    }

    SChildGeneratorDesc& idts = desc->xa4_x90_IDTS;
    if (idts.m_found && x74_curFrame == x268_PSLT && x84_prevFrame != x74_curFrame)
    {
        int ndsyVal = 1;
        if (CIntElement* ndsy = desc->xb4_xa0_NDSY.get())
            ndsy->GetValue(0, ndsyVal);

        CGenDescription* idtsDesc = idts.m_token.GetObj();
        if (!(x26d_27_enableOPTS && idtsDesc->x45_31_x32_25_OPTS))
        {
            x290_activePartChildren.reserve(ndsyVal + x290_activePartChildren.size());
            for (int i=0 ; i<ndsyVal ; ++i)
            {
                std::unique_ptr<CParticleGen> chGen = ConstructChildParticleSystem(idts.m_token);
                x290_activePartChildren.emplace_back(std::move(chGen));
            }
        }
    }

    SSwooshGeneratorDesc& sswh = desc->xd4_xc0_SSWH;
    if (sswh.m_found && x84_prevFrame != x74_curFrame && x74_curFrame == x2ac_SSSD)
    {
        std::unique_ptr<CParticleGen> sswhGen = std::make_unique<CParticleSwoosh>(sswh.m_token, 0);
        sswhGen->SetGlobalTranslation(xe8_globalTranslation);
        sswhGen->SetGlobalScale(x100_globalScale);
        sswhGen->SetLocalScale(x16c_localScale);
        sswhGen->SetTranslation(xdc_translation + x2b0_SSPO);
        sswhGen->SetOrientation(x1d8_orientation);
        sswhGen->SetParticleEmission(x88_particleEmission);
        x290_activePartChildren.emplace_back(std::move(sswhGen));
    }

    SElectricGeneratorDesc& selc = desc->xec_xd8_SELC;
    if (selc.m_found && x84_prevFrame != x74_curFrame && x74_curFrame == x2bc_SESD)
    {
        std::unique_ptr<CParticleGen> selcGen = std::make_unique<CParticleElectric>(selc.m_token);
        selcGen->SetGlobalTranslation(xe8_globalTranslation);
        selcGen->SetGlobalScale(x100_globalScale);
        selcGen->SetLocalScale(x16c_localScale);
        selcGen->SetTranslation(xdc_translation + x2c0_SEPO);
        selcGen->SetOrientation(x1d8_orientation);
        selcGen->SetParticleEmission(x88_particleEmission);
        x290_activePartChildren.emplace_back(std::move(selcGen));
    }

    for (auto p = x290_activePartChildren.begin() ; p != x290_activePartChildren.end() ;)
    {
        std::unique_ptr<CParticleGen>& ch = *p;

        ch->Update(dt);
        if (ch->IsSystemDeletable())
        {
            p = x290_activePartChildren.erase(p);
            continue;
        }

        ++p;
    }

    x84_prevFrame = x74_curFrame;
}

void CElementGen::UpdateLightParameters()
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    if (CColorElement* lclr = desc->x104_xf0_LCLR.get())
        lclr->GetValue(x74_curFrame, x30c_LCLR);

    if (CRealElement* lint = desc->x108_xf4_LINT.get())
        lint->GetValue(x74_curFrame, x310_LINT);

    switch (x308_lightType)
    {
    default:
    case LightType::None:
    case LightType::Custom:
    case LightType::Spot:
    {
        if (CVectorElement* loff = desc->x10c_xf8_LOFF.get())
            loff->GetValue(x74_curFrame, x314_LOFF);

        if (CRealElement* lfor = desc->x118_x104_LFOR.get())
            lfor->GetValue(x74_curFrame, x330_LFOR);

        if (x308_lightType == LightType::Spot)
        {
            if (CRealElement* lsla = desc->x11c_x108_LSLA.get())
                lsla->GetValue(x74_curFrame, x334_LSLA);
        }
    }
    case LightType::Directional:
    {
        if (x308_lightType != LightType::Custom)
        {
            if (CVectorElement* ldir = desc->x110_xfc_LDIR.get())
                ldir->GetValue(x74_curFrame, x320_LDIR);
        }
    }
    }
}

u32 CElementGen::GetParticleCountAllInternal() const
{
    u32 ret = x25c_activeParticleCount;

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        if (ch->Get4CharId() == FOURCC('PART'))
            ret += static_cast<CElementGen&>(*ch).GetParticleCountAll();

    return ret;
}

void CElementGen::EndLifetime()
{
    x268_PSLT = 0;
    for (std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
    {
        if (ch->Get4CharId() == FOURCC('PART'))
            static_cast<CElementGen&>(*ch).EndLifetime();
        else
            ch->SetParticleEmission(false);
    }
}

void CElementGen::ForceParticleCreation(int amount)
{
    CParticleGlobals::SParticleSystem* prevSystem = CParticleGlobals::g_currentParticleSystem;
    CParticleGlobals::SParticleSystem thisSystem{ FOURCC('PART'), this };
    CParticleGlobals::g_currentParticleSystem = &thisSystem;
    CParticleGlobals::SetEmitterTime(x74_curFrame);
    CreateNewParticles(amount);
    CParticleGlobals::g_currentParticleSystem = prevSystem;
}

void CElementGen::BuildParticleSystemBounds()
{
    zeus::CAABox aabb;
    bool accumulated = false;

    for (std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
    {
        auto chBounds = ch->GetBounds();
        if (chBounds)
        {
            accumulated = true;
            aabb.accumulateBounds(chBounds.value());
        }
    }

    x264_recursiveParticleCount = GetParticleCountAllInternal();
    if (GetParticleCount() > 0)
    {
        zeus::CVector3f scale = x100_globalScale * x2ec_maxSize;
        zeus::CTransform xf = (x10c_globalScaleTransform * x22c_globalOrientation) * x178_localScaleTransform;
        zeus::CAABox box = zeus::CAABox(x2d4_aabbMin, x2e0_aabbMax).getTransformedAABox(xf);
        zeus::CVector3f min = box.min + xe8_globalTranslation - scale;
        zeus::CVector3f max = box.max + xe8_globalTranslation + scale;
        x2f0_systemBounds = zeus::CAABox(min, max);
    }
    else
        x2f0_systemBounds = zeus::CAABox::skInvertedBox;

    if (accumulated)
        x2f0_systemBounds.accumulateBounds(aabb);
}

u32 CElementGen::GetSystemCount()
{
    u32 ret = 0;
    for (const std::unique_ptr<CParticleGen>& child : x290_activePartChildren)
    {
        if (child->Get4CharId() == FOURCC('PART'))
            ret += static_cast<CElementGen&>(*child).GetSystemCount();
        else
            ret += 1;
    }

    return (ret + (x25c_activeParticleCount != 0));
}

void CElementGen::Render(const CActorLights* actorLights)
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    x274_backupLightActive = CGraphics::g_LightActive;
    CGraphics::DisableAllLights();

    for (std::unique_ptr<CParticleGen>& child : x290_activePartChildren)
        child->Render();

    CParticleGlobals::SParticleSystem* prevSystem = CParticleGlobals::g_currentParticleSystem;
    CParticleGlobals::SParticleSystem thisSystem{ FOURCC('PART'), this };
    CParticleGlobals::g_currentParticleSystem = &thisSystem;

    if (x30_particles.size())
    {
        SParticleModel& pmdl = desc->x5c_x48_PMDL;
        if (pmdl.m_found || desc->x45_24_x31_26_PMUS)
            RenderModels(actorLights);

        if (x26c_31_LINE)
            RenderLines();
        else
            RenderParticles();
    }

    CParticleGlobals::g_currentParticleSystem = prevSystem;
}

void CElementGen::RenderModels(const CActorLights* actorLights)
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    if (x26d_26_modelsUseLights)
        CGraphics::SetLightState(x274_backupLightActive);
    CGlobalRandom gr(x27c_randState);

    SUVElementSet uvs = {0.f, 0.f, 1.f, 1.f};
    CUVElement* texr = desc->x54_x40_TEXR.get();
    CTexture* cachedTex = nullptr;
    bool texConst = true;
    bool moveRedToAlphaBuffer = false;

    if (desc->x45_24_x31_26_PMUS)
    {
        if (sMoveRedToAlphaBuffer && desc->x44_31_x31_25_PMAB && desc->x54_x40_TEXR)
            moveRedToAlphaBuffer = true;

        if (desc->x44_31_x31_25_PMAB)
        {
            CGraphics::SetDepthWriteMode(true, ERglEnum::LEqual, false);
            if (moveRedToAlphaBuffer)
                CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::One, ERglBlendFactor::One, ERglLogicOp::Clear);
            else
                CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::SrcAlpha, ERglBlendFactor::One, ERglLogicOp::Clear);
        }
        else
        {
            CGraphics::SetDepthWriteMode(true, ERglEnum::LEqual, true);
            CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::SrcAlpha, ERglBlendFactor::InvSrcAlpha, ERglLogicOp::Clear);
        }

        CGraphics::SetCullMode(ERglCullMode::None);

        if (texr)
        {
            CParticle& target = x30_particles[0];
            int partFrame = x74_curFrame - target.x28_startFrame;
            cachedTex = texr->GetValueTexture(partFrame).GetObj();
            cachedTex->Load(0, CTexture::EClampMode::One);
            /* Shade as TEXC * RASC and TEXA * RASA */
            if (moveRedToAlphaBuffer)
            {
                /* Color = Prev.rgb * Prev.a */
                /* Alpha = Tex.r * Prev.a */
            }
            texConst = texr->HasConstantTexture();
            texr->GetValueUV(partFrame, uvs);
        }

        switch (m_shaderClass)
        {
        case CElementGenShaders::EShaderClass::Tex:
            g_instTexData.clear();
            g_instTexData.reserve(x30_particles.size());
            break;
        case CElementGenShaders::EShaderClass::NoTex:
            g_instNoTexData.clear();
            g_instNoTexData.reserve(x30_particles.size());
            break;
        default:
            Log.report(logvisor::Fatal, "unexpected particle shader class");
            break;
        }

        SParticleUniforms uniformData =
        {
            CGraphics::GetPerspectiveProjectionMatrix(true),
            {1.f, 1.f, 1.f, 1.f}
        };

        m_uniformBufPmus->load(&uniformData, sizeof(SParticleUniforms));

        if (moveRedToAlphaBuffer)
            CGraphics::SetShaderDataBinding(m_redToAlphaDataBindPmus);
        else
            CGraphics::SetShaderDataBinding(m_normalDataBindPmus);
    }

    zeus::CTransform orient = zeus::CTransform::Identity();
    if (desc->x45_25_x31_27_PMOO)
        orient = x1d8_orientation;
    orient = orient * x22c_globalOrientation;

    CVectorElement* pmrt = desc->x70_x5c_PMRT.get();
    bool pmrtConst = false;
    if (pmrt)
        pmrtConst = pmrt->IsFastConstant();

    zeus::CVector3f trans = (x13c_globalScaleTransformInverse * x1a8_localScaleTransformInverse) * xe8_globalTranslation;

    zeus::CTransform rot = zeus::CTransform::Identity();
    if (pmrtConst)
    {
        zeus::CVector3f pmrtVal;
        pmrt->GetValue(x74_curFrame, pmrtVal);
        rot = zeus::CTransform::RotateZ(zeus::degToRad(pmrtVal[2]));
        rot.rotateLocalY(zeus::degToRad(pmrtVal[1]));
        rot.rotateLocalX(zeus::degToRad(pmrtVal[0]));
    }
    rot = orient * rot;

    CParticleGlobals::SetEmitterTime(x74_curFrame);
    zeus::CColor col = {1.f, 1.f, 1.f, 1.f};

    zeus::CVector3f pmopVec;
    auto matrixIt = x50_parentMatrices.begin();
    for (int i=0 ; i<x30_particles.size() ; ++i)
    {
        CParticle& particle = x30_particles[i];
        g_currentParticle = &particle;

        if (particle.x0_endFrame == -1)
        {
            ++matrixIt;
            continue;
        }
        CParticleGlobals::SetParticleLifetime(particle.x0_endFrame - particle.x28_startFrame);
        int partFrame = x74_curFrame - particle.x28_startFrame - 1;
        CParticleGlobals::UpdateParticleLifetimeTweenValues(partFrame);
        CParticleGlobals::g_particleAccessParameters = &x60_advValues[i];
        CVectorElement* pmop = desc->x6c_x58_PMOP.get();
        if (pmop)
            pmop->GetValue(partFrame, pmopVec);

        zeus::CTransform partTrans = zeus::CTransform::Translate(particle.x4_pos + trans);
        if (x2c_orientType == EModelOrientationType::One)
        {
            zeus::CTransform partRot(*matrixIt);
            zeus::CVector3f pmopRotateOffset = (orient * partRot) * pmopVec;
            partTrans = partTrans * partRot;
            partTrans += pmopRotateOffset;
        }
        else
        {
            partTrans += orient * pmopVec;
        }

        if (pmrtConst)
        {
            partTrans = partTrans * rot;
        }
        else
        {
            if (pmrt)
            {
                zeus::CVector3f pmrtVal;
                pmrt->GetValue(partFrame, pmrtVal);
                rot = zeus::CTransform::RotateZ(zeus::degToRad(pmrtVal[2]));
                rot.rotateLocalY(zeus::degToRad(pmrtVal[1]));
                rot.rotateLocalX(zeus::degToRad(pmrtVal[0]));
                partTrans = partTrans * (orient * rot);
            }
            else
            {
                partTrans = partTrans * rot;
            }
        }

        CVectorElement* pmsc = desc->x74_x60_PMSC.get();
        if (pmsc)
        {
            zeus::CVector3f pmscVal;
            pmsc->GetValue(partFrame, pmscVal);
            partTrans = partTrans * zeus::CTransform::Scale(pmscVal);
        }

        CColorElement* pmcl = desc->x78_x64_PMCL.get();
        if (pmcl)
            pmcl->GetValue(partFrame, col);

        CGraphics::SetModelMatrix((x10c_globalScaleTransform * partTrans) * x178_localScaleTransform);

        if (desc->x45_24_x31_26_PMUS)
        {
            if (!texConst)
            {
                CTexture* tex = texr->GetValueTexture(x74_curFrame - particle.x28_startFrame).GetObj();
                if (tex != cachedTex)
                {
                    tex->Load(0, CTexture::EClampMode::One);
                    cachedTex = tex;
                }
            }

            switch (m_shaderClass)
            {
            case CElementGenShaders::EShaderClass::Tex:
            {
                g_instTexData.emplace_back();
                SParticleInstanceTex& inst = g_instTexData.back();
                inst.pos[0] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, 0.5f};
                inst.pos[1] = CGraphics::g_GXModelView * zeus::CVector3f{-0.5f, 0.f, 0.5f};
                inst.pos[2] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, -0.5f};
                inst.pos[3] = CGraphics::g_GXModelView * zeus::CVector3f{-0.5f, 0.f, -0.5f};
                inst.color = col;
                inst.uvs[0] = {uvs.xMax, uvs.yMax};
                inst.uvs[1] = {uvs.xMin, uvs.yMax};
                inst.uvs[2] = {uvs.xMax, uvs.yMin};
                inst.uvs[3] = {uvs.xMin, uvs.yMin};
                break;
            }
            case CElementGenShaders::EShaderClass::NoTex:
            {
                g_instNoTexData.emplace_back();
                SParticleInstanceNoTex& inst = g_instNoTexData.back();
                inst.pos[0] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, 0.5f};
                inst.pos[1] = CGraphics::g_GXModelView * zeus::CVector3f{-0.5f, 0.f, 0.5f};
                inst.pos[2] = CGraphics::g_GXModelView * zeus::CVector3f{0.5f, 0.f, -0.5f};
                inst.pos[3] = CGraphics::g_GXModelView * zeus::CVector3f{-0.5f, 0.f, -0.5f};
                inst.color = col;
                break;
            }
            default: break;
            }
        }
        else
        {
            CModel* model = desc->x5c_x48_PMDL.m_token.GetObj();
            if (actorLights)
                actorLights->ActivateLights(model->GetInstance());
            if (g_subtractBlend)
            {
                model->Draw({5, 0, 1, zeus::CColor(1.f, 0.5f)});
            }
            else if (desc->x44_31_x31_25_PMAB)
            {
                model->Draw({7, 0, 1, col});
            }
            else
            {
                if (1.f == col.a)
                    model->Draw({0, 0, 3, zeus::CColor::skWhite});
                else
                    model->Draw({5, 0, 1, col});
            }
        }

        ++matrixIt;
    }

    if (desc->x45_24_x31_26_PMUS)
    {
        switch (m_shaderClass)
        {
        case CElementGenShaders::EShaderClass::Tex:
            m_instBufPmus->load(g_instTexData.data(), g_instTexData.size() * sizeof(SParticleInstanceTex));
            CGraphics::DrawInstances(0, 4, g_instTexData.size());
            break;
        case CElementGenShaders::EShaderClass::NoTex:
            m_instBufPmus->load(g_instNoTexData.data(), g_instNoTexData.size() * sizeof(SParticleInstanceNoTex));
            CGraphics::DrawInstances(0, 4, g_instNoTexData.size());
            break;
        default: break;
        }
    }

    if (x26d_26_modelsUseLights)
        CGraphics::DisableAllLights();

    CGraphics::SetCullMode(ERglCullMode::Front);
    if (moveRedToAlphaBuffer)
    {
        /* Restore passthrough */
    }
}

void CElementGen::RenderLines()
{
    CGenDescription* desc = x1c_genDesc.GetObj();
    CGlobalRandom gr(x27c_randState);

    zeus::CTransform systemViewPointMatrix(CGraphics::g_ViewMatrix);
    systemViewPointMatrix.origin.zeroOut();
    zeus::CTransform systemCameraMatrix = systemViewPointMatrix.inverse() * x22c_globalOrientation;
    systemViewPointMatrix = ((zeus::CTransform::Translate(xe8_globalTranslation) * x10c_globalScaleTransform) * systemViewPointMatrix) * x178_localScaleTransform;
    CGraphics::SetModelMatrix(systemViewPointMatrix);

    CGraphics::SetAlphaCompare(ERglAlphaFunc::Always, 0, ERglAlphaOp::And, ERglAlphaFunc::Always, 0);

    if (x26c_26_AAPH)
    {
        CGraphics::SetDepthWriteMode(true, ERglEnum::LEqual, false);
        CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::SrcAlpha, ERglBlendFactor::One, ERglLogicOp::Clear);
    }
    else
    {
        CGraphics::SetDepthWriteMode(true, ERglEnum::LEqual, true);
        CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::SrcAlpha, ERglBlendFactor::InvSrcAlpha, ERglLogicOp::Clear);
    }

    CRealElement* widt = desc->x24_x18_WIDT.get();
    bool widtConst = false;
    if (widt)
        widtConst = widt->IsConstant();

    CUVElement* texr = desc->x54_x40_TEXR.get();
    SUVElementSet uvs = {0.f, 0.f, 1.f, 1.f};
    bool constTexr = true;
    bool constUVs = true;
    CTexture* cachedTex = nullptr;
    zeus::CColor moduColor = zeus::CColor::skWhite;
    if (texr)
    {
        CParticle& target = x30_particles[0];
        int partFrame = x74_curFrame - target.x28_startFrame;
        cachedTex = texr->GetValueTexture(partFrame).GetObj();
        cachedTex->Load(0, CTexture::EClampMode::One);

        /* Set TEXC * RASC */

        if (x338_moduColor != zeus::CColor::skBlack)
        {
            /* Add RASC * PREVC pass for MODU color loaded into channel mat-color */
            moduColor = x338_moduColor;
        }

        constTexr = texr->HasConstantTexture();
        texr->GetValueUV(partFrame, uvs);
        constUVs = texr->HasConstantUV();
    }

    float constWidth = 1.f;
    if (widtConst)
    {
        widt->GetValue(0, constWidth);
        constWidth = std::max(0.f, std::min(constWidth, 42.5f));
    }

    m_lineRenderer->Reset();

    for (int i=0 ; i<x30_particles.size() ; ++i)
    {
        CParticle& particle = x30_particles[i];
        g_currentParticle = &particle;

        int partFrame = x74_curFrame - particle.x28_startFrame;

        if (!constTexr)
        {
            CTexture* tex = texr->GetValueTexture(partFrame).GetObj();
            if (tex != cachedTex)
            {
                tex->Load(0, CTexture::EClampMode::One);
                cachedTex = tex;
            }
        }

        if (!constUVs)
            texr->GetValueUV(partFrame, uvs);

        zeus::CVector3f dVec = particle.x4_pos - particle.x10_prevPos;
        if (x26d_24_FXLL)
            if (dVec.magSquared() >= 0.f)
                dVec.normalize();

        zeus::CVector3f p1 = systemCameraMatrix * particle.x4_pos;
        zeus::CVector3f p2 = systemCameraMatrix * (particle.x2c_lineLengthOrSize * dVec + particle.x4_pos);

        if (widtConst)
        {
            m_lineRenderer->AddVertex(p1, particle.x34_color, constWidth, {uvs.xMin, uvs.yMin});
            m_lineRenderer->AddVertex(p2, particle.x34_color, constWidth, {uvs.xMax, uvs.yMax});
        }
        else if (widt)
        {
            float width = 1.f;
            widt->GetValue(0, width);
            width = std::max(0.f, std::min(width, 42.5f));
            m_lineRenderer->AddVertex(p1, particle.x34_color, width, {uvs.xMin, uvs.yMin});
            m_lineRenderer->AddVertex(p2, particle.x34_color, width, {uvs.xMax, uvs.yMax});
        }
    }

    m_lineRenderer->Render(moduColor);
}

void CElementGen::RenderParticles()
{
    CGenDescription* desc = x1c_genDesc.GetObj();
    CGlobalRandom gr(x27c_randState);

    CUVElement* texr = desc->x54_x40_TEXR.get();
    CUVElement* tind = desc->x58_x44_TIND.get();
    if (texr && tind)
    {
        RenderParticlesIndirectTexture();
        return;
    }

    CRealElement* size = desc->x4c_x38_SIZE.get();
    if (size && size->IsConstant())
    {
        float sizeVal;
        size->GetValue(0, sizeVal);
        if (sizeVal == 0.f)
        {
            size->GetValue(1, sizeVal);
            if (sizeVal == 0.f)
                return;
        }
    }

    zeus::CTransform systemModelMatrix(CGraphics::g_ViewMatrix);
    systemModelMatrix.origin.zeroOut();
    zeus::CTransform systemCameraMatrix = systemModelMatrix.inverse() * x22c_globalOrientation;
    systemModelMatrix = ((zeus::CTransform::Translate(xe8_globalTranslation) * x10c_globalScaleTransform) *
        systemModelMatrix) * x178_localScaleTransform;
    if (x26c_29_ORNT)
        CGraphics::SetModelMatrix(systemModelMatrix * systemCameraMatrix);
    else
        CGraphics::SetModelMatrix(systemModelMatrix);

    CGraphics::SetAlphaCompare(ERglAlphaFunc::Always, 0, ERglAlphaOp::And, ERglAlphaFunc::Always, 0);

    SUVElementSet uvs = {0.f, 0.f, 1.f, 1.f};
    bool constUVs = true;
    CTexture* cachedTex = nullptr;

    SParticleUniforms uniformData =
    {
        CGraphics::GetPerspectiveProjectionMatrix(true) * CGraphics::g_GXModelView.toMatrix4f(),
        {1.f, 1.f, 1.f, 1.f}
    };

    if (texr)
    {
        CParticle& target = x30_particles[0];
        int partFrame = x74_curFrame - target.x28_startFrame;
        cachedTex = texr->GetValueTexture(partFrame).GetObj();
        cachedTex->Load(0, CTexture::EClampMode::One);

        if (x338_moduColor != zeus::CColor::skBlack)
        {
            /* Add RASC * PREVC pass for MODU color loaded into channel mat-color */
            uniformData.moduColor = x338_moduColor;
        }

        texr->GetValueUV(partFrame, uvs);
        constUVs = texr->HasConstantUV();
    }

    m_uniformBuf->load(&uniformData, sizeof(SParticleUniforms));

    std::vector<CParticleListItem> sortItems;
    if (desc->x44_28_x30_28_SORT)
    {
        sortItems.reserve(x30_particles.size());

        for (int i=0 ; i<x30_particles.size() ; ++i)
        {
            const CParticle& particle = x30_particles[i];
            sortItems.emplace_back(i);
            CParticleListItem& sortItem = sortItems.back();
            sortItem.x4_viewPoint = systemCameraMatrix * ((particle.x4_pos - particle.x10_prevPos) *
                                                              x80_timeDeltaScale + particle.x10_prevPos);
        }

        std::sort(sortItems.begin(), sortItems.end(),
                  [](const CParticleListItem& a, const CParticleListItem& b) -> bool
                  {return a.x4_viewPoint[1] >= b.x4_viewPoint[1];});
    }

    bool moveRedToAlphaBuffer = false;
    if (sMoveRedToAlphaBuffer && x26c_26_AAPH)
        moveRedToAlphaBuffer = true;

    if (g_subtractBlend)
    {
        if (moveRedToAlphaBuffer)
            CGraphics::SetShaderDataBinding(m_redToAlphaSubDataBind);
        else
            CGraphics::SetShaderDataBinding(m_normalSubDataBind);
    }
    else
    {
        if (moveRedToAlphaBuffer)
            CGraphics::SetShaderDataBinding(m_redToAlphaDataBind);
        else
            CGraphics::SetShaderDataBinding(m_normalDataBind);
    }

    int mbspVal = std::max(1, x270_MBSP);

    CParticleGlobals::SetEmitterTime(x74_curFrame);
    if (!x26c_30_MBLR)
    {
#if 0
        if (!desc->x44_28_x30_28_SORT && constUVs && !x26c_29_ORNT)
        {
            if (!desc->x50_x3c_ROTA)
            {
                if (!zeus::close_enough(x80_timeDeltaScale, 1.f))
                {
                    RenderBasicParticlesNoRotNoTS(systemCameraMatrix);
                }
                else
                {
                    RenderBasicParticlesNoRotTS(systemCameraMatrix);
                }
            }
            else
            {
                if (!zeus::close_enough(x80_timeDeltaScale, 1.f))
                {
                    RenderBasicParticlesRotNoTS(systemCameraMatrix);
                }
                else
                {
                    RenderBasicParticlesRotTS(systemCameraMatrix);
                }
            }
        }
#endif

        switch (m_shaderClass)
        {
        case CElementGenShaders::EShaderClass::Tex:
            g_instTexData.clear();
            g_instTexData.reserve(x30_particles.size());
            break;
        case CElementGenShaders::EShaderClass::NoTex:
            g_instNoTexData.clear();
            g_instNoTexData.reserve(x30_particles.size());
            break;
        default:
            Log.report(logvisor::Fatal, "unexpected particle shader class");
            break;
        }

        if (!x26c_29_ORNT)
        {
            for (int i = 0; i < x30_particles.size(); ++i)
            {
                int partIdx = desc->x44_28_x30_28_SORT ? sortItems[i].x0_partIdx : i;
                CParticle& particle = x30_particles[partIdx];
                g_currentParticle = &particle;

                int partFrame = x74_curFrame - particle.x28_startFrame - 1;
                zeus::CVector3f viewPoint;
                if (desc->x44_28_x30_28_SORT)
                    viewPoint = sortItems[i].x4_viewPoint;
                else
                    viewPoint = systemCameraMatrix * ((particle.x4_pos - particle.x10_prevPos) *
                                                      x80_timeDeltaScale + particle.x10_prevPos);

                if (!constUVs)
                {
                    CParticleGlobals::SetParticleLifetime(particle.x0_endFrame - particle.x28_startFrame);
                    CParticleGlobals::UpdateParticleLifetimeTweenValues(partFrame);
                    texr->GetValueUV(partFrame, uvs);
                }

                float size = 0.5f * particle.x2c_lineLengthOrSize;
                if (0.f == particle.x30_lineWidthOrRota)
                {
                    switch (m_shaderClass)
                    {
                    case CElementGenShaders::EShaderClass::Tex:
                    {
                        g_instTexData.emplace_back();
                        SParticleInstanceTex& inst = g_instTexData.back();
                        inst.pos[0] = zeus::CVector4f{viewPoint.x + size, viewPoint.y, viewPoint.z + size, 1.f};
                        inst.pos[1] = zeus::CVector4f{viewPoint.x - size, viewPoint.y, viewPoint.z + size, 1.f};
                        inst.pos[2] = zeus::CVector4f{viewPoint.x + size, viewPoint.y, viewPoint.z - size, 1.f};
                        inst.pos[3] = zeus::CVector4f{viewPoint.x - size, viewPoint.y, viewPoint.z - size, 1.f};
                        inst.color = particle.x34_color;
                        inst.uvs[0] = {uvs.xMax, uvs.yMax};
                        inst.uvs[1] = {uvs.xMin, uvs.yMax};
                        inst.uvs[2] = {uvs.xMax, uvs.yMin};
                        inst.uvs[3] = {uvs.xMin, uvs.yMin};
                        break;
                    }
                    case CElementGenShaders::EShaderClass::NoTex:
                    {
                        g_instNoTexData.emplace_back();
                        SParticleInstanceNoTex& inst = g_instNoTexData.back();
                        inst.pos[0] = zeus::CVector4f{viewPoint.x + size, viewPoint.y, viewPoint.z + size, 1.f};
                        inst.pos[1] = zeus::CVector4f{viewPoint.x - size, viewPoint.y, viewPoint.z + size, 1.f};
                        inst.pos[2] = zeus::CVector4f{viewPoint.x + size, viewPoint.y, viewPoint.z - size, 1.f};
                        inst.pos[3] = zeus::CVector4f{viewPoint.x - size, viewPoint.y, viewPoint.z - size, 1.f};
                        inst.color = particle.x34_color;
                        break;
                    }
                    default:
                        break;
                    }
                }
                else
                {
                    float theta = zeus::degToRad(particle.x30_lineWidthOrRota);
                    float sinT = std::sin(theta) * size;
                    float cosT = std::cos(theta) * size;

                    switch (m_shaderClass)
                    {
                    case CElementGenShaders::EShaderClass::Tex:
                    {
                        g_instTexData.emplace_back();
                        SParticleInstanceTex& inst = g_instTexData.back();
                        inst.pos[0] = zeus::CVector4f{viewPoint.x + sinT + cosT, viewPoint.y, viewPoint.z + cosT - sinT, 1.f};
                        inst.pos[1] = zeus::CVector4f{viewPoint.x + sinT - cosT, viewPoint.y, viewPoint.z + sinT + cosT, 1.f};
                        inst.pos[2] = zeus::CVector4f{viewPoint.x + (cosT - sinT), viewPoint.y, viewPoint.z + (-cosT - sinT),
                                                      1.f};
                        inst.pos[3] = zeus::CVector4f{viewPoint.x - (sinT + cosT), viewPoint.y, viewPoint.z - (cosT - sinT),
                                                      1.f};
                        inst.color = particle.x34_color;
                        inst.uvs[0] = {uvs.xMax, uvs.yMax};
                        inst.uvs[1] = {uvs.xMin, uvs.yMax};
                        inst.uvs[2] = {uvs.xMax, uvs.yMin};
                        inst.uvs[3] = {uvs.xMin, uvs.yMin};
                        break;
                    }
                    case CElementGenShaders::EShaderClass::NoTex:
                    {
                        g_instNoTexData.emplace_back();
                        SParticleInstanceNoTex& inst = g_instNoTexData.back();
                        inst.pos[0] = zeus::CVector4f{viewPoint.x + sinT + cosT, viewPoint.y, viewPoint.z + cosT - sinT, 1.f};
                        inst.pos[1] = zeus::CVector4f{viewPoint.x + sinT - cosT, viewPoint.y, viewPoint.z + sinT + cosT, 1.f};
                        inst.pos[2] = zeus::CVector4f{viewPoint.x + (cosT - sinT), viewPoint.y, viewPoint.z + (-cosT - sinT),
                                                      1.f};
                        inst.pos[3] = zeus::CVector4f{viewPoint.x - (sinT + cosT), viewPoint.y, viewPoint.z - (cosT - sinT),
                                                      1.f};
                        inst.color = particle.x34_color;
                        break;
                    }
                    default:
                        break;
                    }
                }
            }
        }
        else
        {
            for (int i = 0; i < x30_particles.size(); ++i)
            {
                int partIdx = desc->x44_28_x30_28_SORT ? sortItems[i].x0_partIdx : i;
                CParticle& particle = x30_particles[partIdx];
                g_currentParticle = &particle;

                int partFrame = x74_curFrame - particle.x28_startFrame - 1;
                zeus::CVector3f viewPoint = ((particle.x4_pos - particle.x10_prevPos) *
                                            x80_timeDeltaScale + particle.x10_prevPos);
                float width = !desc->x50_x3c_ROTA ? 1.f : particle.x30_lineWidthOrRota;
                zeus::CVector3f dir;
                if (particle.x1c_vel.canBeNormalized())
                {
                    dir = particle.x1c_vel.normalized();
                }
                else
                {
                    zeus::CVector3f delta = particle.x4_pos - particle.x10_prevPos;
                    if (delta.canBeNormalized())
                        dir = delta.normalized();
                    else
                        dir = zeus::CVector3f::skUp;
                }

                zeus::CVector3f foreVec = particle.x2c_lineLengthOrSize * dir;
                zeus::CVector3f rightVec;
                if (desc->x30_31_RSOP)
                {
                    rightVec = dir.cross(CGraphics::g_ViewMatrix.basis[1]);
                    if (rightVec.canBeNormalized())
                    {
                        rightVec = rightVec.normalized() * (particle.x2c_lineLengthOrSize * width);
                    }
                    else
                    {
                        rightVec = dir.cross((CGraphics::g_ViewMatrix.origin - particle.x4_pos).normalized());
                        if (rightVec.canBeNormalized())
                        {
                            rightVec = rightVec.normalized() * (particle.x2c_lineLengthOrSize * width);
                        }
                    }
                }
                else
                {
                    rightVec = foreVec.cross(CGraphics::g_ViewMatrix.basis[1]) * width;
                }

                if (!constUVs)
                {
                    CParticleGlobals::SetParticleLifetime(particle.x0_endFrame - particle.x28_startFrame);
                    CParticleGlobals::UpdateParticleLifetimeTweenValues(partFrame);
                    texr->GetValueUV(partFrame, uvs);
                }

                switch (m_shaderClass)
                {
                case CElementGenShaders::EShaderClass::Tex:
                {
                    g_instTexData.emplace_back();
                    SParticleInstanceTex& inst = g_instTexData.back();
                    viewPoint += rightVec * 0.5f;
                    inst.pos[0] = zeus::CVector4f{viewPoint + 0.5f * foreVec};
                    inst.pos[1] = zeus::CVector4f{viewPoint - 0.5f * foreVec};
                    viewPoint -= rightVec;
                    inst.pos[2] = zeus::CVector4f{viewPoint + 0.5f * foreVec};
                    inst.pos[3] = zeus::CVector4f{viewPoint - 0.5f * foreVec};
                    inst.color = particle.x34_color;
                    inst.uvs[0] = {uvs.xMax, uvs.yMax};
                    inst.uvs[1] = {uvs.xMin, uvs.yMax};
                    inst.uvs[2] = {uvs.xMax, uvs.yMin};
                    inst.uvs[3] = {uvs.xMin, uvs.yMin};
                    break;
                }
                case CElementGenShaders::EShaderClass::NoTex:
                {
                    g_instNoTexData.emplace_back();
                    SParticleInstanceNoTex& inst = g_instNoTexData.back();
                    viewPoint += rightVec * 0.5f;
                    inst.pos[0] = zeus::CVector4f{viewPoint + 0.5f * foreVec};
                    inst.pos[1] = zeus::CVector4f{viewPoint - 0.5f * foreVec};
                    viewPoint -= rightVec;
                    inst.pos[2] = zeus::CVector4f{viewPoint + 0.5f * foreVec};
                    inst.pos[3] = zeus::CVector4f{viewPoint - 0.5f * foreVec};
                    inst.color = particle.x34_color;
                    break;
                }
                default:
                    break;
                }
            }
        }

        switch (m_shaderClass)
        {
        case CElementGenShaders::EShaderClass::Tex:
            m_instBuf->load(g_instTexData.data(), g_instTexData.size() * sizeof(SParticleInstanceTex));
            CGraphics::DrawInstances(0, 4, g_instTexData.size());
            break;
        case CElementGenShaders::EShaderClass::NoTex:
            m_instBuf->load(g_instNoTexData.data(), g_instNoTexData.size() * sizeof(SParticleInstanceNoTex));
            CGraphics::DrawInstances(0, 4, g_instNoTexData.size());
            break;
        default: break;
        }
    }
    else
    {
        switch (m_shaderClass)
        {
        case CElementGenShaders::EShaderClass::Tex:
            g_instTexData.clear();
            g_instTexData.reserve(x30_particles.size() * mbspVal);
            break;
        case CElementGenShaders::EShaderClass::NoTex:
            g_instNoTexData.clear();
            g_instNoTexData.reserve(x30_particles.size() * mbspVal);
            break;
        default:
            Log.report(logvisor::Fatal, "unexpected particle shader class");
            break;
        }
        float mbspFac = 1.f / float(mbspVal);
        for (int i=0 ; i<x30_particles.size() ; ++i)
        {
            int partIdx = desc->x44_28_x30_28_SORT ? sortItems[i].x0_partIdx : i;
            CParticle& particle = x30_particles[partIdx];
            g_currentParticle = &particle;

            int partFrame = x74_curFrame - particle.x28_startFrame - 1;

            if (!constUVs)
            {
                CParticleGlobals::SetParticleLifetime(particle.x0_endFrame - particle.x28_startFrame);
                CParticleGlobals::UpdateParticleLifetimeTweenValues(partFrame);
                texr->GetValueUV(partFrame, uvs);
            }

            zeus::CVector3f dVec = particle.x4_pos - particle.x10_prevPos;
            zeus::CVector3f vec = dVec * x80_timeDeltaScale + particle.x10_prevPos;
            zeus::CVector3f mbspVec = dVec * mbspFac;
            float size = 0.5f * particle.x2c_lineLengthOrSize;
            if (0.f == particle.x30_lineWidthOrRota)
            {
                for (int j=0 ; j<mbspVal ; ++j)
                {
                    vec += mbspVec;
                    zeus::CVector3f vec2 = systemCameraMatrix * vec;

                    switch (m_shaderClass)
                    {
                    case CElementGenShaders::EShaderClass::Tex:
                    {
                        g_instTexData.emplace_back();
                        SParticleInstanceTex& inst = g_instTexData.back();
                        inst.pos[0] = zeus::CVector4f{vec2.x + size, vec2.y, vec2.z + size, 1.f};
                        inst.pos[1] = zeus::CVector4f{vec2.x - size, vec2.y, vec2.z + size, 1.f};
                        inst.pos[2] = zeus::CVector4f{vec2.x + size, vec2.y, vec2.z - size, 1.f};
                        inst.pos[3] = zeus::CVector4f{vec2.x - size, vec2.y, vec2.z - size, 1.f};
                        inst.color = particle.x34_color;
                        inst.uvs[0] = {uvs.xMax, uvs.yMax};
                        inst.uvs[1] = {uvs.xMin, uvs.yMax};
                        inst.uvs[2] = {uvs.xMax, uvs.yMin};
                        inst.uvs[3] = {uvs.xMin, uvs.yMin};
                        break;
                    }
                    case CElementGenShaders::EShaderClass::NoTex:
                    {
                        g_instNoTexData.emplace_back();
                        SParticleInstanceNoTex& inst = g_instNoTexData.back();
                        inst.pos[0] = zeus::CVector4f{vec2.x + size, vec2.y, vec2.z + size, 1.f};
                        inst.pos[1] = zeus::CVector4f{vec2.x - size, vec2.y, vec2.z + size, 1.f};
                        inst.pos[2] = zeus::CVector4f{vec2.x + size, vec2.y, vec2.z - size, 1.f};
                        inst.pos[3] = zeus::CVector4f{vec2.x - size, vec2.y, vec2.z - size, 1.f};
                        inst.color = particle.x34_color;
                        break;
                    }
                    default: break;
                    }
                }
            }
            else
            {
                float theta = zeus::degToRad(particle.x30_lineWidthOrRota);
                float sinT = std::sin(theta) * size;
                float cosT = std::cos(theta) * size;

                for (int j=0 ; j<mbspVal ; ++j)
                {
                    vec += mbspVec;
                    zeus::CVector3f vec2 = systemCameraMatrix * vec;

                    switch (m_shaderClass)
                    {
                    case CElementGenShaders::EShaderClass::Tex:
                    {
                        g_instTexData.emplace_back();
                        SParticleInstanceTex& inst = g_instTexData.back();
                        inst.pos[0] = zeus::CVector4f{vec2.x + sinT + cosT, vec2.y, vec2.z + cosT - sinT, 1.f};
                        inst.pos[1] = zeus::CVector4f{vec2.x + sinT - cosT, vec2.y, vec2.z + sinT + cosT, 1.f};
                        inst.pos[2] = zeus::CVector4f{vec2.x + (cosT - sinT), vec2.y, vec2.z + (-cosT - sinT), 1.f};
                        inst.pos[3] = zeus::CVector4f{vec2.x - (sinT + cosT), vec2.y, vec2.z - (cosT - sinT), 1.f};
                        inst.color = particle.x34_color;
                        inst.uvs[0] = {uvs.xMax, uvs.yMax};
                        inst.uvs[1] = {uvs.xMin, uvs.yMax};
                        inst.uvs[2] = {uvs.xMax, uvs.yMin};
                        inst.uvs[3] = {uvs.xMin, uvs.yMin};
                        break;
                    }
                    case CElementGenShaders::EShaderClass::NoTex:
                    {
                        g_instNoTexData.emplace_back();
                        SParticleInstanceNoTex& inst = g_instNoTexData.back();
                        inst.pos[0] = zeus::CVector4f{vec2.x + sinT + cosT, vec2.y, vec2.z + cosT - sinT, 1.f};
                        inst.pos[1] = zeus::CVector4f{vec2.x + sinT - cosT, vec2.y, vec2.z + sinT + cosT, 1.f};
                        inst.pos[2] = zeus::CVector4f{vec2.x + (cosT - sinT), vec2.y, vec2.z + (-cosT - sinT), 1.f};
                        inst.pos[3] = zeus::CVector4f{vec2.x - (sinT + cosT), vec2.y, vec2.z - (cosT - sinT), 1.f};
                        inst.color = particle.x34_color;
                        break;
                    }
                    default: break;
                    }
                }
            }
        }
        switch (m_shaderClass)
        {
        case CElementGenShaders::EShaderClass::Tex:
            m_instBuf->load(g_instTexData.data(), g_instTexData.size() * sizeof(SParticleInstanceTex));
            CGraphics::DrawInstances(0, 4, g_instTexData.size());
            break;
        case CElementGenShaders::EShaderClass::NoTex:
            m_instBuf->load(g_instNoTexData.data(), g_instNoTexData.size() * sizeof(SParticleInstanceNoTex));
            CGraphics::DrawInstances(0, 4, g_instNoTexData.size());
            break;
        default: break;
        }
    }
}

void CElementGen::RenderParticlesIndirectTexture()
{
    CGenDescription* desc = x1c_genDesc.GetObj();

    zeus::CTransform systemViewPointMatrix(CGraphics::g_ViewMatrix);
    systemViewPointMatrix.origin.zeroOut();
    zeus::CTransform systemCameraMatrix = systemViewPointMatrix.inverse() * x22c_globalOrientation;
    systemViewPointMatrix = ((zeus::CTransform::Translate(xe8_globalTranslation) * x10c_globalScaleTransform) * systemViewPointMatrix) * x178_localScaleTransform;
    CGraphics::SetModelMatrix(systemViewPointMatrix);

    SParticleUniforms uniformData =
    {
        CGraphics::GetPerspectiveProjectionMatrix(true) * CGraphics::g_GXModelView.toMatrix4f(),
        {1.f, 1.f, 1.f, 1.f}
    };
    m_uniformBuf->load(&uniformData, sizeof(SParticleUniforms));

    CGraphics::SetAlphaCompare(ERglAlphaFunc::Always, 0, ERglAlphaOp::And, ERglAlphaFunc::Always, 0);

    if (x26c_26_AAPH)
    {
        CGraphics::SetDepthWriteMode(true, ERglEnum::LEqual, true);
        CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::SrcAlpha, ERglBlendFactor::One, ERglLogicOp::Clear);
    }
    else
    {
        CGraphics::SetDepthWriteMode(true, ERglEnum::LEqual, x26c_27_ZBUF);
        CGraphics::SetBlendMode(ERglBlendMode::Blend, ERglBlendFactor::SrcAlpha, ERglBlendFactor::InvSrcAlpha, ERglLogicOp::Clear);
    }

    CUVElement* texr = desc->x54_x40_TEXR.get();
    CParticle& firstParticle = x30_particles[0];
    int partFrame = x74_curFrame - firstParticle.x28_startFrame;
    CTexture* cachedTex = texr->GetValueTexture(partFrame).GetObj();
    cachedTex->Load(0, CTexture::EClampMode::One);

    SUVElementSet uvs = {0.f, 0.f, 1.f, 1.f};
    bool constTexr = texr->HasConstantTexture();
    texr->GetValueUV(partFrame, uvs);
    bool constUVs = texr->HasConstantUV();

    CUVElement* tind = desc->x58_x44_TIND.get();
    CTexture* cachedIndTex = tind->GetValueTexture(partFrame).GetObj();
    cachedIndTex->Load(2, CTexture::EClampMode::One);

    SUVElementSet uvsInd = {0.f, 0.f, 1.f, 1.f};
    bool constIndTexr = tind->HasConstantTexture();
    bool constIndUVs = tind->HasConstantUV();
    tind->GetValueUV(partFrame, uvsInd);

    std::vector<CParticleListItem> sortItems;
    if (desc->x44_28_x30_28_SORT)
    {
        sortItems.reserve(x30_particles.size());

        for (int i=0 ; i<x30_particles.size() ; ++i)
        {
            const CParticle& particle = x30_particles[i];
            sortItems.emplace_back(i);
            CParticleListItem& sortItem = sortItems.back();
            sortItem.x4_viewPoint = systemCameraMatrix * ((particle.x4_pos - particle.x10_prevPos) * x80_timeDeltaScale + particle.x10_prevPos);
        }

        std::sort(sortItems.begin(), sortItems.end(),
                  [](const CParticleListItem& a, const CParticleListItem& b) -> bool
                  {return a.x4_viewPoint[1] >= b.x4_viewPoint[1];});
    }

    g_instIndTexData.clear();
    g_instIndTexData.reserve(x30_particles.size());

    for (int i=0 ; i<x30_particles.size() ; ++i)
    {
        int partIdx = desc->x44_28_x30_28_SORT ? sortItems[i].x0_partIdx : i;
        CParticle& particle = x30_particles[partIdx];
        g_currentParticle = &particle;

        int partFrame = x74_curFrame - particle.x28_startFrame;
        zeus::CVector3f viewPoint;
        if (desc->x44_28_x30_28_SORT)
            viewPoint = sortItems[i].x4_viewPoint;
        else
            viewPoint = systemCameraMatrix * ((particle.x4_pos - particle.x10_prevPos) * x80_timeDeltaScale + particle.x10_prevPos);

        if (!constTexr)
        {
            CTexture* tex = texr->GetValueTexture(partFrame).GetObj();
            if (tex != cachedTex)
            {
                tex->Load(0, CTexture::EClampMode::One);
                cachedTex = tex;
            }
        }

        if (!constIndTexr)
        {
            CTexture* tex = tind->GetValueTexture(partFrame).GetObj();
            if (tex != cachedIndTex)
            {
                tex->Load(2, CTexture::EClampMode::One);
                cachedIndTex = tex;
            }
        }

        if (!constUVs)
            texr->GetValueUV(partFrame, uvs);

        if (!constIndUVs)
            tind->GetValueUV(partFrame, uvsInd);

        float size = 0.5f * particle.x2c_lineLengthOrSize;
        zeus::CVector3f p1 = {viewPoint.x - size, viewPoint.y, viewPoint.z - size};
        zeus::CVector3f p2 = {viewPoint.x + size, viewPoint.y, viewPoint.z + size};
        SClipScreenRect clipRect = CGraphics::ClipScreenRectFromMS(p1, p2);

        if (!clipRect.x0_valid)
            continue;

        CGraphics::ResolveSpareTexture(clipRect);

        g_instIndTexData.emplace_back();
        SParticleInstanceIndTex& inst = g_instIndTexData.back();
        inst.pos[0] = zeus::CVector4f{viewPoint.x + size, viewPoint.y, viewPoint.z + size, 1.f};
        inst.pos[1] = zeus::CVector4f{viewPoint.x - size, viewPoint.y, viewPoint.z + size, 1.f};
        inst.pos[2] = zeus::CVector4f{viewPoint.x + size, viewPoint.y, viewPoint.z - size, 1.f};
        inst.pos[3] = zeus::CVector4f{viewPoint.x - size, viewPoint.y, viewPoint.z - size, 1.f};
        inst.color = particle.x34_color;
        inst.texrTindUVs[2] = zeus::CVector4f{uvs.xMax, uvs.yMax, uvsInd.xMin, uvsInd.yMin};
        inst.texrTindUVs[3] = zeus::CVector4f{uvs.xMin, uvs.yMax, uvsInd.xMin, uvsInd.yMax};
        inst.texrTindUVs[0] = zeus::CVector4f{uvs.xMax, uvs.yMin, uvsInd.xMax, uvsInd.yMin};
        inst.texrTindUVs[1] = zeus::CVector4f{uvs.xMin, uvs.yMin, uvsInd.xMax, uvsInd.yMax};
        inst.sceneUVs = zeus::CVector4f{clipRect.x18_uvXMin, clipRect.x24_uvYMax, clipRect.x1c_uvXMax, clipRect.x20_uvYMin};
    }

    if (g_instIndTexData.size())
    {
        m_instBuf->load(g_instIndTexData.data(), g_instIndTexData.size() * sizeof(SParticleInstanceIndTex));
        CGraphics::SetShaderDataBinding(m_normalDataBind);
        CGraphics::DrawInstances(0, 4, g_instIndTexData.size());
    }
}

void CElementGen::SetOrientation(const zeus::CTransform& orientation)
{
    x1d8_orientation = orientation;
    x208_orientationInverse = x1d8_orientation.inverse();

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetOrientation(orientation);
}

void CElementGen::SetTranslation(const zeus::CVector3f& translation)
{
    xdc_translation = translation;

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
    {
        switch (ch->Get4CharId())
        {
        case SBIG('SELC'):
            ch->SetTranslation(translation + x2c0_SEPO);
            break;
        case SBIG('SWHC'):
            ch->SetTranslation(translation + x2b0_SSPO);
            break;
        default:
            ch->SetTranslation(translation);
            break;
        }
    }
}

void CElementGen::SetGlobalOrientation(const zeus::CTransform& rotation)
{
    x22c_globalOrientation.setRotation(rotation);

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetGlobalOrientation(x22c_globalOrientation);
}

void CElementGen::SetGlobalTranslation(const zeus::CVector3f& translation)
{
    xe8_globalTranslation = translation;

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetGlobalTranslation(translation);
}

void CElementGen::SetGlobalScale(const zeus::CVector3f& scale)
{
    x100_globalScale = scale;
    x10c_globalScaleTransform = zeus::CTransform::Scale(scale);
    x13c_globalScaleTransformInverse = zeus::CTransform::Scale(zeus::CVector3f::skOne / scale);

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetGlobalScale(scale);
}

void CElementGen::SetLocalScale(const zeus::CVector3f& scale)
{
    x16c_localScale = scale;
    x178_localScaleTransform = zeus::CTransform::Scale(scale);
    x1a8_localScaleTransformInverse = zeus::CTransform::Scale(zeus::CVector3f::skOne / scale);

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetLocalScale(scale);
}

void CElementGen::SetGlobalOrientAndTrans(const zeus::CTransform& xf)
{
    SetGlobalOrientation(xf);
    SetGlobalTranslation(xf.origin);
}

void CElementGen::SetParticleEmission(bool enabled)
{
    x88_particleEmission = enabled;

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetParticleEmission(enabled);
}

void CElementGen::SetModulationColor(const zeus::CColor& color)
{
    x338_moduColor = color;

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->SetModulationColor(color);
}

void CElementGen::SetGeneratorRate(float rate)
{
    if (rate >= 0.0f)
        x98_generatorRate = rate;
    else
        x98_generatorRate = 0.0f;

    for (std::unique_ptr<CParticleGen>& child : x290_activePartChildren)
    {
        if (child->Get4CharId() == FOURCC('PART'))
            child->SetGeneratorRate(x98_generatorRate);
    }
}

const zeus::CTransform& CElementGen::GetOrientation() const
{
    return x1d8_orientation;
}

const zeus::CVector3f& CElementGen::GetTranslation() const
{
    return xdc_translation;
}

const zeus::CTransform& CElementGen::GetGlobalOrientation() const
{
    return x22c_globalOrientation;
}

const zeus::CVector3f& CElementGen::GetGlobalTranslation() const
{
    return xe8_globalTranslation;
}

const zeus::CVector3f& CElementGen::GetGlobalScale() const
{
    return x100_globalScale;
}

const zeus::CColor& CElementGen::GetModulationColor() const
{
    return x338_moduColor;
}

bool CElementGen::IsSystemDeletable() const
{
    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        if (!ch->IsSystemDeletable())
            return false;

    if (x268_PSLT < x74_curFrame && x25c_activeParticleCount == 0)
        return true;

    return false;
}

std::experimental::optional<zeus::CAABox> CElementGen::GetBounds() const
{
    if (GetParticleCountAll() == 0)
        return std::experimental::nullopt;
    else
        return {x2f0_systemBounds};
}

u32 CElementGen::GetParticleCount() const
{
    return x25c_activeParticleCount;
}

bool CElementGen::SystemHasLight() const
{
    return x308_lightType != LightType::None;
}

CLight CElementGen::GetLight() const
{
    switch (x308_lightType)
    {
    case LightType::Directional:
        return CLight::BuildDirectional(x320_LDIR.normalized(), x30c_LCLR * x310_LINT);
    case LightType::Spot:
        return CLight::BuildSpot(x314_LOFF, x320_LDIR.normalized(), x30c_LCLR * x310_LINT, x334_LSLA);
    default:
    {
        float quad = x32c_falloffType == EFalloffType::Quadratic ? x330_LFOR : 0.f;
        float linear = x32c_falloffType == EFalloffType::Linear ? x330_LFOR : 0.f;
        float constant = x32c_falloffType == EFalloffType::Constant ? 1.f : 0.f;
        return CLight::BuildCustom(x314_LOFF, {1.f, 0.f, 0.f}, x30c_LCLR,
                                   constant, linear, quad, x310_LINT, 0.f, 0.f);
    }
    }
}

bool CElementGen::GetParticleEmission() const
{
    return x88_particleEmission;
}

void CElementGen::DestroyParticles()
{
    g_ParticleAliveCount -= x30_particles.size();
    x30_particles.clear();
    x50_parentMatrices.clear();

    for (const std::unique_ptr<CParticleGen>& ch : x290_activePartChildren)
        ch->DestroyParticles();
}

void CElementGen::Reset()
{
    x30_particles.clear();
    x50_parentMatrices.clear();
    x290_activePartChildren.clear();

    x74_curFrame = 0;
    x78_curSeconds = 0.f;
    x84_prevFrame = -1;
    x25c_activeParticleCount = 0;
    x26d_25_warmedUp = false;
}

void CElementGen::SetMoveRedToAlphaBuffer(bool move)
{
    sMoveRedToAlphaBuffer = move;
}

}