atdunbg
b86ca460de
根因1（致命）：光源位置写成 lightDir*30。lightDir 是光的传播方向 （指向场景），乘 30 后光源跑到场景下方——从地面下方向上打光， 地面永远是光线第一个交点，物体永远不可能遮挡地面，影子恒不存在。 修复：光源位置 = -lightDir * 30（逆传播方向退回）。 根因2：垂直光（direction≈(0,-1,0)）时 lookAt 的 up=(0,1,0) 与视线 平行，叉积为零 → 矩阵 NaN → shadow map 全垃圾。修复：|dir.y|>0.99 时改用 (0,0,1) 作为 up。 场景：地面 quad（Model::CreatePlane 程序化构造，AssetManager 缓存） + 主光调平让影子落在相机视野内。已截图验证影子可见。
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
//
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// Created by atdunbg on 2026/9/21.
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//
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#ifndef HELLOVULKAN_MODEL_H
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#define HELLOVULKAN_MODEL_H
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#pragma once
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#include <Engine/Core/Types.h>
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#include <Engine/Renderer/Mesh.h>
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#include <vulkan/vulkan.hpp>
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#include <string>
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#include <unordered_map>
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#include <vector>
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struct aiNode;
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struct aiMesh;
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struct aiScene;
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namespace Engine
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{
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class Device;
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class MemoryAllocator;
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class DescriptorManager;
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class Texture;
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class Model
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{
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public:
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Model(Device& device, MemoryAllocator& allocator,
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DescriptorManager& descriptorManager,
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vk::DescriptorSetLayout textureLayout,
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const std::string& path);
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// 程序化构造：单 quad 平面（XZ 平面朝上），不经过 assimp
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static Scope<Model> CreatePlane(Device& device, MemoryAllocator& allocator,
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DescriptorManager& descriptorManager,
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vk::DescriptorSetLayout textureLayout,
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f32 size, const std::string& texturePath);
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~Model();
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Model(const Model&) = delete;
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Model& operator=(const Model&) = delete;
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const std::vector<Scope<Mesh>>& GetMeshes() const { return m_Meshes; }
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private:
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struct ProceduralTag {};
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Model(ProceduralTag, Device& device, MemoryAllocator& allocator,
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DescriptorManager& descriptorManager,
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vk::DescriptorSetLayout textureLayout);
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void LoadModel(const std::string& path);
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void ProcessNode(aiNode* node, const aiScene* scene);
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Scope<Mesh> ProcessMesh(aiMesh* mesh, const aiScene* scene);
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Texture* GetOrLoadTexture(const std::string& path);
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Device& m_Device;
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MemoryAllocator& m_Allocator;
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DescriptorManager& m_DescriptorManager;
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vk::DescriptorSetLayout m_TextureLayout;
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std::vector<Scope<Mesh>> m_Meshes;
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std::string m_ModelPath;
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// 纹理缓存：同一路径只加载一次
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std::unordered_map<std::string, Scope<Texture>> m_TextureCache;
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Scope<Texture> m_DefaultTexture;
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};
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} // namespace Engine
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#endif //HELLOVULKAN_MODEL_H
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