606 lines
23 KiB
C++
606 lines
23 KiB
C++
#include "MetaCoreRender/MetaCoreFilamentSceneBridge.h"
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#include "MetaCorePlatform/MetaCoreWindow.h"
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#include "MetaCoreScene/MetaCoreScene.h"
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#include "MetaCoreScene/MetaCoreComponents.h"
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#include "MetaCoreRender/MetaCoreRenderTypes.h"
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#include "MetaCoreRender/MetaCoreImGuiHelper.h"
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#include <imgui.h>
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#include <filament/Engine.h>
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#include <filament/Scene.h>
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#include <filament/View.h>
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#include <filament/Camera.h>
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#include <filament/SwapChain.h>
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#include <filament/Renderer.h>
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#include <filament/Viewport.h>
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#include <filament/TransformManager.h>
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#include <filament/Texture.h>
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#include <filament/RenderTarget.h>
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#include <filament/LightManager.h>
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#include <gltfio/AssetLoader.h>
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#include <gltfio/FilamentAsset.h>
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#include <gltfio/ResourceLoader.h>
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#include <gltfio/MaterialProvider.h>
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#include <utils/Entity.h>
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#include <utils/EntityManager.h>
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#include <utils/NameComponentManager.h>
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#include "MetaCoreScene/MetaCoreTransformUtils.h"
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#define GLM_ENABLE_EXPERIMENTAL
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#include <glm/gtc/type_ptr.hpp>
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#include <glm/gtc/matrix_transform.hpp>
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#include <glm/gtx/matrix_decompose.hpp>
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#include <glm/gtc/quaternion.hpp>
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#include <iostream>
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#include <fstream>
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#include <unordered_map>
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#include <map>
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#include <vector>
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// 引入 Windows 和 OpenGL 头文件以创建纹理
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <GL/gl.h>
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namespace MetaCore {
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class MetaCoreFilamentSceneBridge::MetaCoreFilamentSceneBridgeImpl {
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public:
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MetaCoreFilamentSceneBridgeImpl() = default;
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~MetaCoreFilamentSceneBridgeImpl() {
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Shutdown();
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}
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bool Initialize(MetaCoreWindow& window) {
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std::cout << "FilamentSceneBridge: Initializing..." << std::endl;
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// 创建 Filament Engine (不共享上下文，避免闪退)
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Engine_ = filament::Engine::create();
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if (!Engine_) {
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std::cerr << "Failed to create Filament Engine with shared context!" << std::endl;
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return false;
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}
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// 创建绑定真实窗口的交换链
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SwapChain_ = Engine_->createSwapChain((void*)window.GetNativeWindowHandle());
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if (!SwapChain_) {
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std::cerr << "Failed to create Filament SwapChain with window handle!" << std::endl;
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return false;
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}
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// 创建渲染器
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Renderer_ = Engine_->createRenderer();
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// 创建场景
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Scene_ = Engine_->createScene();
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// 创建默认灯光
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Light_ = utils::EntityManager::get().create();
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filament::LightManager::Builder(filament::LightManager::Type::DIRECTIONAL)
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.color(filament::Color::toLinear<filament::ACCURATE>({ 1.0f, 1.0f, 1.0f }))
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.intensity(100000.0f)
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.direction({ 0.5f, 0.5f, -1.0f }) // Z-up 下 Z 向下
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.castShadows(true)
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.build(*Engine_, Light_);
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Scene_->addEntity(Light_);
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// 创建相机
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utils::Entity cameraEntity = utils::EntityManager::get().create();
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Camera_ = Engine_->createCamera(cameraEntity);
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// 创建视图
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View_ = Engine_->createView();
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View_->setScene(Scene_);
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View_->setCamera(Camera_);
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// 创建 UI 视图
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UIView_ = Engine_->createView();
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// 创建 ImGuiHelper
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ImGuiHelper_ = new MetaCoreImGuiHelper(Engine_, UIView_, "", ImGui::GetCurrentContext());
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// 初始化离屏渲染纹理
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auto [width, height] = window.GetFramebufferSize();
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// 1. 创建 Filament 颜色纹理
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FilamentTexture_ = filament::Texture::Builder()
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.width(static_cast<uint32_t>(width))
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.height(static_cast<uint32_t>(height))
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.usage(filament::Texture::Usage::COLOR_ATTACHMENT | filament::Texture::Usage::SAMPLEABLE)
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.format(filament::Texture::InternalFormat::RGBA8)
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.build(*Engine_);
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// 2. 创建深度纹理
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DepthTexture_ = filament::Texture::Builder()
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.width(static_cast<uint32_t>(width))
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.height(static_cast<uint32_t>(height))
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.usage(filament::Texture::Usage::DEPTH_ATTACHMENT)
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.format(filament::Texture::InternalFormat::DEPTH24)
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.build(*Engine_);
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// 3. 创建 RenderTarget 并绑定
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RenderTarget_ = filament::RenderTarget::Builder()
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.texture(filament::RenderTarget::AttachmentPoint::COLOR, FilamentTexture_)
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.texture(filament::RenderTarget::AttachmentPoint::DEPTH, DepthTexture_)
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.build(*Engine_);
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// 4. 设置到 View
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View_->setRenderTarget(RenderTarget_);
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View_->setViewport({0, 0, static_cast<uint32_t>(width), static_cast<uint32_t>(height)});
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// 确保开启后处理（为了HDR）
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View_->setPostProcessingEnabled(true);
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// 初始化 gltfio
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MaterialProvider_ = filament::gltfio::createJitShaderProvider(Engine_);
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NameManager_ = new utils::NameComponentManager(utils::EntityManager::get());
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AssetLoader_ = filament::gltfio::AssetLoader::create({ Engine_, MaterialProvider_, NameManager_ });
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std::cout << "FilamentSceneBridge: Initialized with Offscreen Texture ID: " << GLTextureId_ << std::endl;
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return true;
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}
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void Shutdown() {
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if (Engine_) {
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std::cout << "FilamentSceneBridge: Shutting down..." << std::endl;
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// 销毁所有加载的资产
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for (auto& [id, asset] : LoadedAssets_) {
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AssetLoader_->destroyAsset(asset);
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}
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LoadedAssets_.clear();
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// 销毁 gltfio 资源
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if (AssetLoader_) {
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filament::gltfio::AssetLoader::destroy(&AssetLoader_);
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AssetLoader_ = nullptr;
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}
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if (MaterialProvider_) {
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MaterialProvider_->destroyMaterials();
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delete MaterialProvider_;
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MaterialProvider_ = nullptr;
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}
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// 销毁离屏渲染资源
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if (RenderTarget_) {
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Engine_->destroy(RenderTarget_);
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RenderTarget_ = nullptr;
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}
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if (FilamentTexture_) {
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Engine_->destroy(FilamentTexture_);
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FilamentTexture_ = nullptr;
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}
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if (DepthTexture_) {
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Engine_->destroy(DepthTexture_);
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DepthTexture_ = nullptr;
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}
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if (GLTextureId_) {
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glDeleteTextures(1, &GLTextureId_);
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GLTextureId_ = 0;
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}
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// 销毁 View
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Engine_->destroy(View_);
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// 销毁相机组件和实体
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if (Camera_) {
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utils::Entity cameraEntity = Camera_->getEntity();
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Engine_->destroyCameraComponent(cameraEntity);
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utils::EntityManager::get().destroy(cameraEntity);
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}
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// 销毁其他资源
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Engine_->destroy(Scene_);
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Engine_->destroy(Renderer_);
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Engine_->destroy(SwapChain_);
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delete NameManager_;
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NameManager_ = nullptr;
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// 最后销毁 Engine
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filament::Engine::destroy(&Engine_);
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Engine_ = nullptr;
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}
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}
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void SetProjectRootPath(const std::filesystem::path& projectRootPath) {
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ProjectRootPath_ = projectRootPath;
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}
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void ParseModelHierarchyToEcs(MetaCoreScene& scene, MetaCoreGameObject& parentObject, filament::gltfio::FilamentAsset* asset) {
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if (!asset) return;
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const utils::Entity* entities = asset->getEntities();
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size_t entityCount = asset->getEntityCount();
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auto& tm = Engine_->getTransformManager();
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// 建立 Filament Entity 到 MetaCore GameObject 的映射
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std::map<utils::Entity, MetaCoreGameObject> entityToObj;
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entityToObj[asset->getRoot()] = parentObject;
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// 第一遍：创建所有对象
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for (size_t i = 0; i < entityCount; i++) {
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utils::Entity entity = entities[i];
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if (entity == asset->getRoot()) continue;
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const char* nodeName = asset->getName(entity);
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std::string name = nodeName ? nodeName : ("Node_" + std::to_string(i));
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// 初始先挂在根部，第二遍再调整
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MetaCoreGameObject childObj = scene.CreateGameObject(name, parentObject.GetId());
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entityToObj[entity] = childObj;
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ObjectToFilamentEntity_[childObj.GetId()] = { asset, entity };
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// 获取并设置 Transform
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auto instance = tm.getInstance(entity);
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if (instance) {
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filament::math::mat4f localTransform = tm.getTransform(instance);
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// 转换为 GLM 矩阵
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glm::mat4 matrix;
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std::memcpy(glm::value_ptr(matrix), &localTransform[0][0], sizeof(float) * 16);
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// 拆解矩阵
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glm::vec3 scale;
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glm::quat rotation;
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glm::vec3 translation;
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glm::vec3 skew;
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glm::vec4 perspective;
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glm::decompose(matrix, scale, rotation, translation, skew, perspective);
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auto& transform = childObj.GetComponent<MetaCoreTransformComponent>();
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transform.Position = translation;
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transform.RotationEulerDegrees = glm::degrees(glm::eulerAngles(rotation));
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transform.Scale = scale;
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}
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// 记录节点索引
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auto& meshRenderer = childObj.AddComponent<MetaCoreMeshRendererComponent>();
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meshRenderer.MeshSource = MetaCoreMeshSourceKind::Asset;
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meshRenderer.ModelNodeIndex = static_cast<std::int32_t>(i);
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}
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// 第二遍：修正父子关系
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for (size_t i = 0; i < entityCount; i++) {
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utils::Entity entity = entities[i];
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if (entity == asset->getRoot()) continue;
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auto instance = tm.getInstance(entity);
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if (instance) {
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utils::Entity parentEntity = tm.getParent(instance);
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if (parentEntity && entityToObj.count(parentEntity)) {
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MetaCoreGameObject currentObj = entityToObj[entity];
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MetaCoreGameObject parentObj = entityToObj[parentEntity];
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currentObj.SetParentId(parentObj.GetId());
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}
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}
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}
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}
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void SyncScene(MetaCoreScene& scene, bool compatibilityMeshOnly) {
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if (!AssetLoader_) return;
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for (const auto& gameObject : scene.GetGameObjects()) {
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if (!gameObject.HasComponent<MetaCoreMeshRendererComponent>()) {
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continue;
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}
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const auto& meshRenderer = gameObject.GetComponent<MetaCoreMeshRendererComponent>();
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if (meshRenderer.MeshSource != MetaCoreMeshSourceKind::Asset) {
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continue;
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}
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std::string modelPath = meshRenderer.SourceModelPath;
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if (modelPath.empty()) {
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continue;
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}
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std::filesystem::path absolutePath = ProjectRootPath_ / modelPath;
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// 如果已经加载过，更新位置即可
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if (LoadedAssets_.contains(gameObject.GetId())) {
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UpdateTransform(gameObject);
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continue;
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}
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// 加载新模型
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std::cout << "FilamentSceneBridge: Loading GLTF: " << absolutePath << std::endl;
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std::ifstream file(absolutePath, std::ios::binary);
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if (!file.is_open()) {
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std::cerr << "Failed to open file: " << absolutePath << std::endl;
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continue;
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}
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std::vector<char> buffer((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
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filament::gltfio::FilamentAsset* asset = AssetLoader_->createAsset(
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reinterpret_cast<const uint8_t*>(buffer.data()),
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static_cast<uint32_t>(buffer.size())
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);
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if (!asset) {
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std::cerr << "Failed to create asset!" << std::endl;
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continue;
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}
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// 加载贴图等资源
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filament::gltfio::ResourceLoader resourceLoader({ Engine_ });
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resourceLoader.loadResources(asset);
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// 添加到场景
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Scene_->addEntities(asset->getEntities(), asset->getEntityCount());
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LoadedAssets_[gameObject.GetId()] = asset;
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// 同步层级结构到场景树
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MetaCoreGameObject nonConstObj = gameObject;
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// 如果名字是默认的 "Cube"，自动改为模型文件名
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if (nonConstObj.GetName() == "Cube") {
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std::string filename = std::filesystem::path(meshRenderer.SourceModelPath).filename().string();
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nonConstObj.GetName() = filename;
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}
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ParseModelHierarchyToEcs(scene, nonConstObj, asset);
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// 创建中间 Pivot 实体用于坐标系转换 (glTF Y-up -> MetaCore Z-up)
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utils::Entity pivotEntity = utils::EntityManager::get().create();
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auto& tm = Engine_->getTransformManager();
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tm.create(pivotEntity);
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// 将资产根节点挂载到 Pivot 下
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utils::Entity assetRoot = asset->getRoot();
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tm.setParent(tm.getInstance(assetRoot), tm.getInstance(pivotEntity));
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// 获取原始局部变换并叠加旋转补偿
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filament::math::mat4f originalLocalTransform = tm.getTransform(tm.getInstance(assetRoot));
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glm::mat4 originalMatrix;
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std::memcpy(glm::value_ptr(originalMatrix), &originalLocalTransform[0][0], sizeof(float) * 16);
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glm::mat4 compensationMatrix = glm::rotate(glm::mat4(1.0f), glm::radians(-90.0f), {1, 0, 0});
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glm::mat4 finalRootMatrix = compensationMatrix * originalMatrix;
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tm.setTransform(tm.getInstance(assetRoot), *reinterpret_cast<const filament::math::mat4f*>(glm::value_ptr(finalRootMatrix)));
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// 将 MetaCore 对象映射到 Pivot 实体，这样 Gizmo 操作的就是正确的坐标空间
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ObjectToFilamentEntity_[gameObject.GetId()] = { asset, pivotEntity };
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Scene_->addEntity(pivotEntity);
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// 更新初始位置
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UpdateTransform(gameObject);
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}
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// 全量同步所有已映射对象的 Transform
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for (const auto& gameObject : scene.GetGameObjects()) {
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if (ObjectToFilamentEntity_.count(gameObject.GetId())) {
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UpdateTransform(gameObject);
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}
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}
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}
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void ApplySceneView(const MetaCoreSceneView& sceneView) {
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if (!Camera_ || !View_) return;
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// 1. 视图矩阵同步
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const glm::mat4 viewMatrix = glm::lookAt(sceneView.CameraPosition, sceneView.CameraTarget, sceneView.CameraUp);
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const glm::mat4 cameraModelMatrix = glm::inverse(viewMatrix);
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Camera_->setModelMatrix(*reinterpret_cast<const filament::math::mat4f*>(glm::value_ptr(cameraModelMatrix)));
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// 2. 投影矩阵：回归 Filament 原生设置
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const auto& viewport = View_->getViewport();
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float aspect = (viewport.height > 0) ? (static_cast<float>(viewport.width) / static_cast<float>(viewport.height)) : 1.0f;
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Camera_->setProjection(
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sceneView.VerticalFieldOfViewDegrees,
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aspect,
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0.1,
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1000.0,
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filament::Camera::Fov::VERTICAL
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);
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}
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void RenderAll() {
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if (!Renderer_ || !SwapChain_ || !View_ || !UIView_ || !ImGuiHelper_) {
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return;
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}
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if (Renderer_->beginFrame(SwapChain_)) {
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// 1. 渲染 3D 离屏视口 (输出到 RenderTarget)
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filament::Renderer::ClearOptions options;
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options.clearColor = { 0.11f, 0.12f, 0.14f, 1.0f }; // 深灰色
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options.clear = true;
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Renderer_->setClearOptions(options);
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Renderer_->render(View_);
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// 2. 准备并渲染 UI 视口 (输出到 SwapChain)
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ImGuiIO& io = ImGui::GetIO();
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ImGuiHelper_->setDisplaySize(io.DisplaySize.x, io.DisplaySize.y);
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UIView_->setViewport({0, 0, static_cast<uint32_t>(io.DisplaySize.x), static_cast<uint32_t>(io.DisplaySize.y)});
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options.clearColor = { 0.11f, 0.12f, 0.14f, 1.0f }; // 灰色
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options.clear = true;
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Renderer_->setClearOptions(options);
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ImGuiHelper_->processImGuiCommands(ImGui::GetDrawData(), io);
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Renderer_->render(UIView_);
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Renderer_->endFrame();
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// 在帧结束、指令提交后，安全地销毁上一帧遗留的旧纹理
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for (auto* tex : OldTextures_) {
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Engine_->destroy(tex);
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}
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OldTextures_.clear();
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}
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}
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uint32_t GetGLTextureId() const {
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return GLTextureId_;
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}
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void Resize(int width, int height) {
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if (width <= 0 || height <= 0) return;
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// 【关键修复】：如果大小没有改变，不要重新创建纹理！
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// 否则会导致上一帧传给 ImGui 的纹理指针在这一帧被提前销毁，引发 Use-after-free 崩溃。
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if (FilamentTexture_ &&
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FilamentTexture_->getWidth() == static_cast<uint32_t>(width) &&
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FilamentTexture_->getHeight() == static_cast<uint32_t>(height)) {
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return;
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}
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if (RenderTarget_) Engine_->destroy(RenderTarget_);
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if (DepthTexture_) Engine_->destroy(DepthTexture_);
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// 【关键修复】：推迟销毁旧纹理，避免当前帧 ImGui 的 DrawList 还在引用它导致崩溃。
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if (FilamentTexture_) {
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OldTextures_.push_back(FilamentTexture_);
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}
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FilamentTexture_ = filament::Texture::Builder()
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.width(static_cast<uint32_t>(width))
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.height(static_cast<uint32_t>(height))
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.usage(filament::Texture::Usage::COLOR_ATTACHMENT | filament::Texture::Usage::SAMPLEABLE)
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.format(filament::Texture::InternalFormat::RGBA8)
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.build(*Engine_);
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DepthTexture_ = filament::Texture::Builder()
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.width(static_cast<uint32_t>(width))
|
||
.height(static_cast<uint32_t>(height))
|
||
.usage(filament::Texture::Usage::DEPTH_ATTACHMENT)
|
||
.format(filament::Texture::InternalFormat::DEPTH24)
|
||
.build(*Engine_);
|
||
|
||
RenderTarget_ = filament::RenderTarget::Builder()
|
||
.texture(filament::RenderTarget::AttachmentPoint::COLOR, FilamentTexture_)
|
||
.texture(filament::RenderTarget::AttachmentPoint::DEPTH, DepthTexture_)
|
||
.build(*Engine_);
|
||
|
||
View_->setRenderTarget(RenderTarget_);
|
||
View_->setViewport({0, 0, static_cast<uint32_t>(width), static_cast<uint32_t>(height)});
|
||
}
|
||
|
||
void* GetFilamentTexturePointer() const {
|
||
return FilamentTexture_;
|
||
}
|
||
|
||
bool TryGetObjectWorldMatrix(MetaCoreId objectId, glm::mat4& worldMatrix) const {
|
||
return false;
|
||
}
|
||
|
||
bool HasRuntimeSyncFailure() const { return false; }
|
||
const std::string& GetLastRuntimeSyncFailure() const { return EmptyString_; }
|
||
|
||
private:
|
||
void UpdateTransform(const MetaCoreGameObject& gameObject) {
|
||
auto it = ObjectToFilamentEntity_.find(gameObject.GetId());
|
||
if (it == ObjectToFilamentEntity_.end()) return;
|
||
|
||
filament::gltfio::FilamentAsset* asset = it->second.first;
|
||
utils::Entity entity = it->second.second;
|
||
|
||
auto& tm = Engine_->getTransformManager();
|
||
auto instance = tm.getInstance(entity);
|
||
if (instance) {
|
||
if (!gameObject.HasComponent<MetaCoreTransformComponent>()) return;
|
||
|
||
const auto& transform = gameObject.GetComponent<MetaCoreTransformComponent>();
|
||
glm::mat4 matrix = MetaCoreBuildTransformMatrix(transform);
|
||
|
||
tm.setTransform(instance, *reinterpret_cast<const filament::math::mat4f*>(glm::value_ptr(matrix)));
|
||
}
|
||
}
|
||
|
||
filament::Engine* Engine_ = nullptr;
|
||
filament::SwapChain* SwapChain_ = nullptr;
|
||
filament::Renderer* Renderer_ = nullptr;
|
||
filament::Scene* Scene_ = nullptr;
|
||
filament::Camera* Camera_ = nullptr;
|
||
filament::View* View_ = nullptr;
|
||
|
||
filament::gltfio::AssetLoader* AssetLoader_ = nullptr;
|
||
filament::gltfio::MaterialProvider* MaterialProvider_ = nullptr;
|
||
utils::NameComponentManager* NameManager_ = nullptr;
|
||
|
||
std::unordered_map<MetaCoreId, std::pair<filament::gltfio::FilamentAsset*, utils::Entity>> ObjectToFilamentEntity_;
|
||
std::unordered_map<MetaCoreId, filament::gltfio::FilamentAsset*> LoadedAssets_;
|
||
|
||
filament::View* UIView_ = nullptr;
|
||
MetaCoreImGuiHelper* ImGuiHelper_ = nullptr;
|
||
|
||
GLuint GLTextureId_ = 0;
|
||
filament::Texture* FilamentTexture_ = nullptr;
|
||
filament::Texture* DepthTexture_ = nullptr;
|
||
filament::RenderTarget* RenderTarget_ = nullptr;
|
||
std::vector<filament::Texture*> OldTextures_;
|
||
utils::Entity Light_;
|
||
|
||
std::filesystem::path ProjectRootPath_{};
|
||
std::string EmptyString_{};
|
||
};
|
||
|
||
MetaCoreFilamentSceneBridge::MetaCoreFilamentSceneBridge()
|
||
: Impl_(std::make_unique<MetaCoreFilamentSceneBridgeImpl>()) {}
|
||
|
||
MetaCoreFilamentSceneBridge::~MetaCoreFilamentSceneBridge() = default;
|
||
|
||
bool MetaCoreFilamentSceneBridge::Initialize(MetaCoreWindow& window) {
|
||
return Impl_->Initialize(window);
|
||
}
|
||
|
||
void MetaCoreFilamentSceneBridge::Shutdown() {
|
||
Impl_->Shutdown();
|
||
}
|
||
|
||
void MetaCoreFilamentSceneBridge::SetProjectRootPath(const std::filesystem::path& projectRootPath) {
|
||
Impl_->SetProjectRootPath(projectRootPath);
|
||
}
|
||
|
||
void MetaCoreFilamentSceneBridge::SyncScene(MetaCoreScene& scene, bool compatibilityMeshOnly) {
|
||
Impl_->SyncScene(scene, compatibilityMeshOnly);
|
||
}
|
||
|
||
void MetaCoreFilamentSceneBridge::ApplySceneView(const MetaCoreSceneView& sceneView) {
|
||
Impl_->ApplySceneView(sceneView);
|
||
}
|
||
|
||
void MetaCoreFilamentSceneBridge::RenderAll() {
|
||
Impl_->RenderAll();
|
||
}
|
||
|
||
uint32_t MetaCoreFilamentSceneBridge::GetGLTextureId() const {
|
||
return Impl_->GetGLTextureId();
|
||
}
|
||
|
||
void MetaCoreFilamentSceneBridge::Resize(int width, int height) {
|
||
Impl_->Resize(width, height);
|
||
}
|
||
|
||
void* MetaCoreFilamentSceneBridge::GetFilamentTexturePointer() const {
|
||
return Impl_->GetFilamentTexturePointer();
|
||
}
|
||
|
||
bool MetaCoreFilamentSceneBridge::TryGetObjectWorldMatrix(MetaCoreId objectId, glm::mat4& worldMatrix) const {
|
||
return Impl_->TryGetObjectWorldMatrix(objectId, worldMatrix);
|
||
}
|
||
|
||
bool MetaCoreFilamentSceneBridge::HasRuntimeSyncFailure() const {
|
||
return Impl_->HasRuntimeSyncFailure();
|
||
}
|
||
|
||
const std::string& MetaCoreFilamentSceneBridge::GetLastRuntimeSyncFailure() const {
|
||
return Impl_->GetLastRuntimeSyncFailure();
|
||
}
|
||
|
||
} // namespace MetaCore
|