dl_vertex.h

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#pragma once
 
#ifndef DL_DISABLE_RENDER
#include <vulkan/vulkan.h>
#include "dl_type.h"
 
namespace dl
{

struct Vertex
{
    Position3 _pos;
    Position2 _uv0;
    Position2 _uv1;
    Position3 _normal;
    Position3 _tangent;
    Position4 _color;
    static VkVertexInputBindingDescription getBindingDescription()
    {
        VkVertexInputBindingDescription bindingDescription{};
        bindingDescription.binding = 0;
        bindingDescription.stride = sizeof(Vertex);
        bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
        return bindingDescription;
    }
    static std::array<VkVertexInputAttributeDescription, 6> getAttributeDescriptions()
    {
        std::array<VkVertexInputAttributeDescription, 6> attributeDescriptions{};
        uint32_t i = 0;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(Vertex, _pos);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(Vertex, _uv0);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(Vertex, _uv1);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(Vertex, _normal);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(Vertex, _tangent);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32A32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(Vertex, _color);
        return attributeDescriptions;
    }
};
 
constexpr size_t NUM_BONE = 4;
struct VertexBone
{
    Position3 _pos;
    Position2 _uv0;
    Position2 _uv1;
    Position3 _normal;
    Position3 _tangent;
    Position4 _weight0;
    std::array<uint32_t, NUM_BONE> _joint0;
    Position4 _color;
    static VkVertexInputBindingDescription getBindingDescription()
    {
        VkVertexInputBindingDescription bindingDescription{};
        bindingDescription.binding = 0;
        bindingDescription.stride = sizeof(VertexBone);
        bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
        return bindingDescription;
    }
    static std::array<VkVertexInputAttributeDescription, 8> getAttributeDescriptions()
    {
        std::array<VkVertexInputAttributeDescription, 8> attributeDescriptions{};
        uint32_t i = 0;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _pos);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _uv0);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _uv1);
        ++i;                  
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _normal);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _tangent);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32A32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _weight0);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32A32_UINT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _joint0);
        ++i;
        attributeDescriptions[i].binding = 0;
        attributeDescriptions[i].location = i;
        attributeDescriptions[i].format = VK_FORMAT_R32G32B32A32_SFLOAT;
        attributeDescriptions[i].offset = offsetof(VertexBone, _color);
 
        return attributeDescriptions;
    }
};

struct Vertex2D
{
    Position3 _pos;
    Color _color;
    Position2 _uv;
    static VkVertexInputBindingDescription getBindingDescription()
    {
        VkVertexInputBindingDescription bindingDescription{};
        bindingDescription.binding = 0;
        bindingDescription.stride = sizeof(Vertex2D);
        bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
        return bindingDescription;
    }
    static std::array<VkVertexInputAttributeDescription, 3> getAttributeDescriptions()
    {
        std::array<VkVertexInputAttributeDescription, 3> attributeDescriptions{};
        attributeDescriptions[0].binding = 0;
        attributeDescriptions[0].location = 0;
        attributeDescriptions[0].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[0].offset = offsetof(Vertex2D, _pos);
        attributeDescriptions[1].binding = 0;
        attributeDescriptions[1].location = 1;
        attributeDescriptions[1].format = VK_FORMAT_R32G32B32A32_SFLOAT;
        attributeDescriptions[1].offset = offsetof(Vertex2D, _color);
        attributeDescriptions[2].binding = 0;
        attributeDescriptions[2].location = 2;
        attributeDescriptions[2].format = VK_FORMAT_R32G32_SFLOAT;
        attributeDescriptions[2].offset = offsetof(Vertex2D, _uv);
        return attributeDescriptions;
    }
};

struct VertexGfx
{
    Position3 _pos;
    Color _color;
    static VkVertexInputBindingDescription getBindingDescription()
    {
        VkVertexInputBindingDescription bindingDescription{};
        bindingDescription.binding = 0;
        bindingDescription.stride = sizeof(VertexGfx);
        bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
        return bindingDescription;
    }
    static std::array<VkVertexInputAttributeDescription, 2> getAttributeDescriptions()
    {
        std::array<VkVertexInputAttributeDescription, 2> attributeDescriptions{};
        attributeDescriptions[0].binding = 0;
        attributeDescriptions[0].location = 0;
        attributeDescriptions[0].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[0].offset = offsetof(VertexGfx, _pos);
        attributeDescriptions[1].binding = 0;
        attributeDescriptions[1].location = 1;
        attributeDescriptions[1].format = VK_FORMAT_R32G32B32A32_SFLOAT;
        attributeDescriptions[1].offset = offsetof(VertexGfx, _color);
        return attributeDescriptions;
    }
};

struct VertexSkybox
{
    Position3 _pos;
    static VkVertexInputBindingDescription getBindingDescription()
    {
        VkVertexInputBindingDescription bindingDescription{};
        bindingDescription.binding = 0;
        bindingDescription.stride = sizeof(VertexSkybox);
        bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
        return bindingDescription;
    }
    static std::array<VkVertexInputAttributeDescription, 1> getAttributeDescriptions()
    {
        std::array<VkVertexInputAttributeDescription, 1> attributeDescriptions{};
        attributeDescriptions[0].binding = 0;
        attributeDescriptions[0].location = 0;
        attributeDescriptions[0].format = VK_FORMAT_R32G32B32_SFLOAT;
        attributeDescriptions[0].offset = offsetof(VertexSkybox, _pos);
        return attributeDescriptions;
    }
};

struct alignas(16) Material
{
    Position4 _baseColorFactor;        // 基础颜色系数
    Position4 _emissiveFactor;          // 自发光系数
    // -1.无贴图 0.使用UV0 1.使用UV1
    int _baseColorTextureSet;
    int _physicalDescriptorTextureSet;
    int _normalTextureSet;
    int _occlusionTextureSet;
    int _emissiveTextureSet;
 
    float _metallicFactor;   // 金属度
    float _roughnessFactor; // 粗糙度
    float _alphaMask;     // 透明度裁剪
    float _alphaMaskCutoff; // 丢弃阈值
    float _emissiveStrength;// 自发光强度
    float _pad[2] = {};
 
    bool operator==(const Material& b) const
    {
        static_assert(sizeof(Material) % 16 == 0);
        return memcmp(this, &b, sizeof(Material)) == 0;
    }
};

struct alignas(16) Light
{
    Position3  _strength;     // 强度
    float       _falloffStart; // 衰减起始     仅点光源、聚光灯
    Position3  _direction;       // 方向           仅平行光、聚光灯
    float       _falloffEnd; // 衰减结束     仅点光源、聚光灯
    Position3  _position;     // 位置           仅点光源、聚光灯
    float       _spotPower;       // 聚光灯强度        仅聚光灯
};
 
struct alignas(16) UbPass
{
    float _exposure;                   // 曝光度
    float _gamma;                     // gamma校正
    float _prefilteredCubeMipLevels;   // 预过滤的立方体贴图级数
    float _scaleIBLAmbient;             // ibl环境光系数
    std::array<Position4, 9> _sh;        // 球谐函数系数（环境光漫反射）
    Position4 _cascadeSplits;            // 级联阴影分段
    float _debugView;
    std::array<Light, 16> _light;
};
 
}
 
#endif