VertexFormat.h

// Copyright 2022 ShenMian
// License(Apache-2.0)
 
#pragma once
 
#include "Format.h"
#include <initializer_list>
#include <string_view>
#include <vector>
 
class VertexFormat
{
public:
    struct Attribute
    {
        Attribute(std::string_view name, Format fmt, uint32_t offset = -1, bool normalized = false)
            : name(name), format(fmt), offset(offset), normalized(normalized)
        {
        }
 
        Attribute(uint32_t location, std::string_view name, Format fmt, bool normalized = false)
            : location(location), name(name), format(fmt), normalized(normalized)
        {
        }
 
        uint32_t get_size() const;
 
        uint32_t         location = -1;
        std::string_view name;
        Format           format;
        bool             normalized = false;
        uint32_t         offset     = -1;
    };
 
    VertexFormat() = default;
    VertexFormat(const std::initializer_list<Attribute>& list);
 
    void add_attribute(Attribute attr);
 
    const std::vector<Attribute> get_attributes() const;
 
    void     set_stride(uint32_t stride);
    uint32_t get_stride() const;
 
private:
    std::vector<Attribute> attribs_;
    uint32_t               stride_ = 0;
};