PipelineLayout.h

// Copyright 2022 ShenMian
// License(Apache-2.0)
 
#pragma once
 
#include <cstdint>
#include <initializer_list>
#include <string_view>
#include <vector>
 
class PipelineLayout
{
public:
    enum class Type
    {
        UniformBuffer,
        Sampler,
        Texture
    };
 
    struct StageFlags
    {
        enum
        {
            Vertex   = 1 << 0, 
            Geometry = 1 << 1, 
            Fragment = 1 << 2, 
            Compute  = 1 << 3  
        };
    };
 
    struct Binding
    {
        Binding(std::string_view name, uint32_t binding, Type type, uint32_t stageFlags, uint32_t arraySize = 1)
            : type(type), binding(binding), stageFlags(stageFlags), arraySize(arraySize)
        {
        }
 
        uint32_t binding;
        Type     type;
        uint32_t stageFlags;
        uint32_t arraySize;
    };
 
    PipelineLayout() = default;
    PipelineLayout(const std::initializer_list<Binding>& list);
 
    void add_binding(Binding attr);
 
    const std::vector<Binding>& get_bindings() const;
 
private:
    std::vector<Binding> bindings_;
};