update vertex pack
This commit is contained in:
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378e0c12a7
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59
engine/3rdparty/ylt/include/parray.h
vendored
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59
engine/3rdparty/ylt/include/parray.h
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@ -0,0 +1,59 @@
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#pragma once
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#include <concepts>
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template<typename P>
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requires requires {typename P::UClass;}
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class parray {
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using UClass = P::UClass;
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protected:
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uint32_t t_size;
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uint32_t m_size;
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uint32_t m_head{ 0 };
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char* m_buf;
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UClass* u_class;
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public:
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~parray() {
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if (m_buf) {
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free(m_buf);
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}
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}
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parray(uint32_t tsize, uint32_t size, UClass* uclass)
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: t_size(tsize), m_buf((char*)malloc(tsize* size)), m_size(size),u_class(uclass) {}
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parray(parray& other) noexcept {
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m_size = other.m_size;
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m_head = other.m_head;
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m_buf = other.m_buf;
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other.m_buf = nullptr;
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}
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void* data() {
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return m_buf;
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}
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uint32_t size() {
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return m_head;
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}
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uint32_t data_size() {
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return t_size * m_head;
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};
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P* at(int i){
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if (i >= m_head) {
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return nullptr;
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}
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return (P*)(m_buf + i * t_size);
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};
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};
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template<typename P, typename T>
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requires std::is_base_of<P, T>::value && requires {typename P::UClass; }
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class ptarray : public parray<P>{
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using parray<P>::m_head;
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using parray<P>::m_size;
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using parray<P>::m_buf;
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using parray<P>::t_size;
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public:
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ptarray(uint32_t size = 1) : parray<P>(sizeof(T), size, new T::UClass()) {}
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void push_back(T& t) {
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if (m_head >= m_size) {
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return;
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}
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*(T*)(m_buf + m_head * t_size) = t;
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m_head++;
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};
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};
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0
engine/3rdparty/ylt/include/struct_member.h
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0
engine/3rdparty/ylt/include/struct_member.h
vendored
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80
engine/3rdparty/ylt/include/template.h
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80
engine/3rdparty/ylt/include/template.h
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#include <ylt/struct_pack.hpp>
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#include <iostream>
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using namespace std;
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using namespace struct_pack;
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using UniversalVectorType = detail::UniversalVectorType;
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using UniversalType = detail::UniversalType;
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using UniversalOptionalType = detail::UniversalOptionalType;
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using UniversalIntegralType = detail::UniversalIntegralType;
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using UniversalNullptrType = detail::UniversalNullptrType;
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using UniversalCompatibleType = detail::UniversalCompatibleType;
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/*
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获取对象成员数量
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*/
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template <typename T, typename construct_param_t, typename = void, typename... Args>
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struct is_constructable_impl : std::false_type {};
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template <typename T, typename construct_param_t, typename... Args>
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struct is_constructable_impl < T, construct_param_t,
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std::void_t<
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decltype(T{ {Args{}}..., {construct_param_t{}} }) > , Args... >
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: std::true_type {};
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template <typename T, typename construct_param_t, typename... Args>
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constexpr bool is_constructable = is_constructable_impl<T, construct_param_t, void, Args...>::value;
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template <typename T, typename... Args>
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constexpr std::size_t members_count_impl() {
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if constexpr (is_constructable<T, UniversalVectorType, Args...>) {
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return members_count_impl<T, Args..., UniversalVectorType>();
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}
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else if constexpr (is_constructable<T, UniversalType, Args...>) {
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cout << "is_constructable UniversalType \n";
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return members_count_impl<T, Args..., UniversalType>();
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}
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return sizeof...(Args);
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}
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/*
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获取成员类型
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*/
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template <typename Type>
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concept type_string = requires(Type container) {
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requires detail::is_char_t<typename std::remove_cvref_t<Type>::value_type>;
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container.length();
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container.data();
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};
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template <typename Type>
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concept type_struct = requires(Type container) {
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requires std::is_class_v<Type>;
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};
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template <typename Type>
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concept type_u32 = requires(Type container) {
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requires sizeof(Type) == 4;
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};
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/*
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获取成员信息
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*/
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template <typename T>
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constexpr void visit_one_member_info(T& item) {
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constexpr auto id = detail::get_type_id<T, 0>();
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cout << "visit_one_member_info::" << (int)id << "=" << item << "\n";
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}
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template <typename... Args>
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void visit_member_info(Args&...args) {
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cout << "visit_member_info::" << sizeof...(args) << "\n";
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(visit_one_member_info(args), ...);
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}
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template <typename T>
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void visit_struct_info(T& item) {
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int count = members_count_impl<T>();
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auto visitor = [](auto&&... items) {
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visit_member_info<>(items...);
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};
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if (count == 4) {
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auto&& [a1, a2, a3, a4] = item;
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visitor(a1, a2, a3, a4);
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}
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}
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52
engine/3rdparty/ylt/include/vertex.h
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52
engine/3rdparty/ylt/include/vertex.h
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@ -0,0 +1,52 @@
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#pragma once
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#include <cstdint>
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#include <tuple>
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#include <vector>
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using namespace std;
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#define sizeof_field(_struct, _field) sizeof(((_struct*)0)->_field)
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// 顶点最多关联4个骨骼
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#define MAX_NUM_BONES_PER_VERTEX 4
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struct Vector2 {
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float x;
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float y;
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};
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struct Vector3 {
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float x;
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float y;
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float z;
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};
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struct Vertex {
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struct UClass {
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virtual void BindLayout() = 0;
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};
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};
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struct PosVertex : public Vertex {
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Vector3 Position = {};
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struct UClass : public Vertex::UClass{
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int MemCount = 1;
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tuple<int, int> Position{sizeof_field(PosVertex, Position), offsetof(PosVertex, Position)};
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virtual void BindLayout() {};
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};
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};
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struct TexVertex : public Vertex {
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Vector3 Position = {};
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Vector3 Normal = {};
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Vector2 TexCoords = {};
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};
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struct BoneVertex : public Vertex
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{
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Vector3 Position = {};
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Vector2 TexCoords = {};
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Vector3 Normal = {};
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Vector3 Tangent = {};
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// 骨骼蒙皮数据
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float Weights[MAX_NUM_BONES_PER_VERTEX] = {};
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uint32_t BoneIDs[MAX_NUM_BONES_PER_VERTEX] = {};
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void AddBoneData(uint32_t boneID, float weight) {};
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};
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107
engine/3rdparty/ylt/test/struct_pack.cpp
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engine/3rdparty/ylt/test/struct_pack.cpp
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#include <ylt/struct_pack.hpp>
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#include <iostream>
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using namespace std;
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using namespace struct_pack;
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using UniversalVectorType = detail::UniversalVectorType;
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using UniversalType = detail::UniversalType;
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using UniversalOptionalType = detail::UniversalOptionalType;
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using UniversalIntegralType = detail::UniversalIntegralType;
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using UniversalNullptrType = detail::UniversalNullptrType;
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using UniversalCompatibleType = detail::UniversalCompatibleType;
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#include "template.h"
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struct person {
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int64_t id;
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std::string name;
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int age;
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double salary;
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};
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template <typename T, typename construct_param_t, typename = void, typename... Args>
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struct is_constructable_impl : std::false_type {};
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template <typename T, typename construct_param_t, typename... Args>
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struct is_constructable_impl < T, construct_param_t,
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std::void_t<
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decltype(T{ {Args{}}..., {construct_param_t{}} }) > , Args... >
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: std::true_type {};
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template <typename T, typename construct_param_t, typename... Args>
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bool is_constructable = is_constructable_impl<T, construct_param_t, void, Args...>::value;
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template <typename T, typename... Args>
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std::size_t members_count_impl() {
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if (is_constructable<T, UniversalVectorType, Args...>) {
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cout << "is_constructable UniversalVectorType \n";
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//return members_count_impl<T, Args..., UniversalVectorType>();
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}
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else if (is_constructable<T, UniversalType, Args...>) {
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cout << "is_constructable UniversalType \n";
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//return members_count_impl<T, UniversalType, Args...>();
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//STRUCT_PACK_REFL(person, ID, name, age);
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inline person& STRUCT_PACK_REFL_FLAG(person& t) {
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return t;
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}
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template<typename T> constexpr std::size_t STRUCT_PACK_FIELD_COUNT_IMPL();
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template<> constexpr std::size_t STRUCT_PACK_FIELD_COUNT_IMPL<person>() {
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return 3;
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}
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inline decltype(auto) STRUCT_PACK_FIELD_COUNT(const person&) {
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return std::integral_constant<std::size_t, 3>{};
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}
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template<std::size_t I> auto& STRUCT_PACK_GET(person& c) {
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if constexpr (0 == I) {
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return c.age;
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} if constexpr (1 == I) {
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return c.name;
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} if constexpr (2 == I) {
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return c.ID;
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}
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else {
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return sizeof...(Args);
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static_assert(I < STRUCT_PACK_FIELD_COUNT_IMPL<person>());
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}
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return sizeof...(Args);
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}
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}
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template<std::size_t I> const auto& STRUCT_PACK_GET(const person& c) {
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if constexpr (0 == I) {
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return c.age;
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} if constexpr (1 == I) {
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return c.name;
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} if constexpr (2 == I) {
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return c.ID;
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}
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else {
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static_assert(I < STRUCT_PACK_FIELD_COUNT_IMPL<person>());
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}
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}
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inline auto& STRUCT_PACK_GET_0(person& c) {
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return STRUCT_PACK_GET<STRUCT_PACK_FIELD_COUNT_IMPL<person>() - 1 - 0>(c);
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}
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inline auto& STRUCT_PACK_GET_1(person& c) {
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return STRUCT_PACK_GET<STRUCT_PACK_FIELD_COUNT_IMPL<person>() - 1 - 1>(c);
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}
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inline auto& STRUCT_PACK_GET_2(person& c) {
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return STRUCT_PACK_GET<STRUCT_PACK_FIELD_COUNT_IMPL<person>() - 1 - 2>(c);
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}
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inline const auto& STRUCT_PACK_GET_0(const person& c) {
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return STRUCT_PACK_GET<STRUCT_PACK_FIELD_COUNT_IMPL<person>() - 1 - 0>(c);
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}
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inline const auto& STRUCT_PACK_GET_1(const person& c) {
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return STRUCT_PACK_GET<STRUCT_PACK_FIELD_COUNT_IMPL<person>() - 1 - 1>(c);
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}
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inline const auto& STRUCT_PACK_GET_2(const person& c) {
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return STRUCT_PACK_GET<STRUCT_PACK_FIELD_COUNT_IMPL<person>() - 1 - 2>(c);
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};
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int main() {
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person person1{ .id = 1, .name = "hello struct pack", .age = 20, .salary = 1024.42 };
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using type = remove_cvref_t<decltype(person1)>;
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using type2 = remove_cvref_t<type>;
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auto Count = members_count<type>;
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int isc = members_count_impl<type2>();
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int c2 = detail::members_count<type>();
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// 1行代码序列化
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auto c1 = members_count<type>;
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int c2 = members_count_impl<type>();
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int c3 = detail::members_count<type>();
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auto id = detail::get_type_id<type>();
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auto t1 = type_struct<type>;
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auto t2 = type_string<decltype(person1.name)>;
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auto t3 = type_u32<decltype(person1.age)>;
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visit_struct_info<decltype(person1)>(person1);
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visit_member_info<>(person1.name, person1.age);
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auto sz_info = detail::calculate_payload_size(person1);
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// 1行代码序列化
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vector<char> buffer = serialize(person1);
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// 只反序列化person的第2个字段
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// 只反序列化person的第2个字段
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auto name = get_field<person, 1>(buffer.data(), buffer.size());
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cout << "hello " << name.value() << "Count == " << Count << c2;
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cout << "hello " << name.value() << "Count == " << c1;
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}
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35
engine/3rdparty/ylt/test/vertex_wrap.cpp
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35
engine/3rdparty/ylt/test/vertex_wrap.cpp
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@ -0,0 +1,35 @@
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#include <cstdint>
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#include <tuple>
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#include <iostream>
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#include "vertex.h"
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#include "parray.h"
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//方案一，使用静态变量存储数据
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//方案二，模板元编程，传递数据
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int main() {
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cout << "std::is_aggregate_v<PosVertex> = "<< is_aggregate_v<PosVertex> << endl;
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cout << "std::is_aggregate_v<TexVertex> = "<< is_aggregate_v<TexVertex> << endl;
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cout << "std::is_aggregate_v<BoneVertex> = "<< is_aggregate_v<BoneVertex> << endl;
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float x1 = 1.0, x2 = 2.0, x3 = 3.0;
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PosVertex p;
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TexVertex t;
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BoneVertex b;
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ptarray<Vertex, PosVertex> vertices(10);
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//ptarray<Vertex, TexVertex> vertices2(10);
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vertices.push_back(p);
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parray<Vertex> pv = vertices;
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auto Position = make_tuple(1, 2, 3);
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auto pv0 = *(PosVertex*)pv.at(0);
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//vertices.push_back(t);
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cout<< "sizeof " << sizeof(p) << "," << sizeof(t) << "," << sizeof(b)<<"\n";
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//auto r1 = b.BindLayout();
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//auto r2 = t.BindLayout();
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//auto r3 = p.BindLayout();
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//cout << "vector " << get<0>(r1[0]) << "," << get<0>(r2[0]) << "," << get<0>(r3[0]) << "\n";
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}
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12
engine/3rdparty/ylt/xmake.lua
vendored
12
engine/3rdparty/ylt/xmake.lua
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@ -5,8 +5,16 @@ package("ylt")
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on_install(function (package)
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os.cp("include", package:installdir())
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end)
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-- target("ylt_struct_pack")
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-- set_kind("binary")
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-- add_packages("ylt")
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-- add_includedirs("include")
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-- add_headerfiles("include/*.h")
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-- add_files("test/struct_pack.cpp")
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target("ylt_struct_pack")
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target("ylt_vertex_wrap")
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set_kind("binary")
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add_packages("ylt")
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add_files("test/struct_pack.cpp")
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add_includedirs("include")
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add_headerfiles("include/*.h")
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add_files("test/vertex_wrap.cpp")
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