cocos-engine/native/cocos/editor-support/MiddlewareManager.cpp

/****************************************************************************
 Copyright (c) 2020-2022 Xiamen Yaji Software Co., Ltd.

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 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated engine source code (the "Software"), a limited,
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 to use Cocos Creator solely to develop games on your target platforms. You shall
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 Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.

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#include "MiddlewareManager.h"
#include <algorithm>
#include "SeApi.h"

MIDDLEWARE_BEGIN

MiddlewareManager *MiddlewareManager::_instance = nullptr;

MiddlewareManager::MiddlewareManager() : _renderInfo(se::Object::TypedArrayType::UINT32),
                                         _attachInfo(se::Object::TypedArrayType::FLOAT32) {
}

MiddlewareManager::~MiddlewareManager() {
    for (auto it : _mbMap) {
        auto buffer = it.second;
        if (buffer) {
            delete buffer;
        }
    }
    _mbMap.clear();
}

MeshBuffer *MiddlewareManager::getMeshBuffer(int format) {
    MeshBuffer *mb = _mbMap[format];
    if (!mb) {
        mb             = new MeshBuffer(format);
        _mbMap[format] = mb;
    }
    return mb;
}

void MiddlewareManager::_clearRemoveList() {
    for (std::size_t i = 0; i < _removeList.size(); i++) {
        auto editor = _removeList[i];
        auto it     = std::find(_updateList.begin(), _updateList.end(), editor);
        if (it != _updateList.end()) {
            _updateList.erase(it);
        }
    }

    _removeList.clear();
}

void MiddlewareManager::update(float dt) {
    isUpdating = true;

    _renderInfo.reset();
    auto renderBuffer = _renderInfo.getBuffer();
    if (renderBuffer) {
        renderBuffer->writeUint32(0);
    }

    _attachInfo.reset();
    auto attachBuffer = _attachInfo.getBuffer();
    if (attachBuffer) {
        attachBuffer->writeUint32(0);
    }

    auto     isOrderDirty   = false;
    uint32_t maxRenderOrder = 0;
    for (std::size_t i = 0, n = _updateList.size(); i < n; i++) {
        auto     editor      = _updateList[i];
        uint32_t renderOrder = maxRenderOrder;
        if (_removeList.size() > 0) {
            auto removeIt = std::find(_removeList.begin(), _removeList.end(), editor);
            if (removeIt == _removeList.end()) {
                editor->update(dt);
                renderOrder = editor->getRenderOrder();
            }
        } else {
            editor->update(dt);
            renderOrder = editor->getRenderOrder();
        }

        if (maxRenderOrder > renderOrder) {
            isOrderDirty = true;
        } else {
            maxRenderOrder = renderOrder;
        }
    }

    isUpdating = false;

    _clearRemoveList();

    if (isOrderDirty) {
        std::sort(_updateList.begin(), _updateList.end(), [](IMiddleware *it1, IMiddleware *it2) {
            return it1->getRenderOrder() < it2->getRenderOrder();
        });
    }
}

void MiddlewareManager::render(float dt) {
    for (auto it : _mbMap) {
        auto buffer = it.second;
        if (buffer) {
            buffer->reset();
        }
    }

    isRendering = true;

    for (std::size_t i = 0, n = _updateList.size(); i < n; i++) {
        auto editor = _updateList[i];
        if (_removeList.size() > 0) {
            auto removeIt = std::find(_removeList.begin(), _removeList.end(), editor);
            if (removeIt == _removeList.end()) {
                editor->render(dt);
            }
        } else {
            editor->render(dt);
        }
    }

    isRendering = false;

    for (auto it : _mbMap) {
        auto buffer = it.second;
        if (buffer) {
            buffer->uploadIB();
            buffer->uploadVB();
        }
    }

    _clearRemoveList();
}

void MiddlewareManager::addTimer(IMiddleware *editor) {
    auto it0 = std::find(_updateList.begin(), _updateList.end(), editor);
    if (it0 != _updateList.end()) {
        return;
    }

    auto it1 = std::find(_removeList.begin(), _removeList.end(), editor);
    if (it1 != _removeList.end()) {
        _removeList.erase(it1);
    }
    _updateList.push_back(editor);
}

void MiddlewareManager::removeTimer(IMiddleware *editor) {
    if (isUpdating || isRendering) {
        _removeList.push_back(editor);
    } else {
        auto it = std::find(_updateList.begin(), _updateList.end(), editor);
        if (it != _updateList.end()) {
            _updateList.erase(it);
        }
    }
}

se_object_ptr MiddlewareManager::getVBTypedArray(int format, int bufferPos) {
    MeshBuffer *mb = _mbMap[format];
    if (!mb) return nullptr;
    return mb->getVBTypedArray(bufferPos);
}

se_object_ptr MiddlewareManager::getIBTypedArray(int format, int bufferPos) {
    MeshBuffer *mb = _mbMap[format];
    if (!mb) return nullptr;
    return mb->getIBTypedArray(bufferPos);
}

SharedBufferManager *MiddlewareManager::getRenderInfoMgr() {
    return &_renderInfo;
}

SharedBufferManager *MiddlewareManager::getAttachInfoMgr() {
    return &_attachInfo;
}

std::size_t MiddlewareManager::getVBTypedArrayLength(int format, std::size_t bufferPos) {
    MeshBuffer *mb = _mbMap[format];
    if (!mb) return 0;
    return mb->getVBTypedArrayLength(bufferPos);
}

std::size_t MiddlewareManager::getIBTypedArrayLength(int format, std::size_t bufferPos) {
    MeshBuffer *mb = _mbMap[format];
    if (!mb) return 0;
    return mb->getIBTypedArrayLength(bufferPos);
}

std::size_t MiddlewareManager::getBufferCount(int format) {
    MeshBuffer *mb = getMeshBuffer(format);
    if (!mb) return 0;
    return mb->getBufferCount();
}

MIDDLEWARE_END