#pragma once

#include "../../DataView.hpp"
#include "../../utils.hpp"
#include "../../Triangle.hpp"

namespace amalgine {
    enum class DeviceMemoryType {
        NONE,
        VEC2,
        VEC3
    };

    class DeviceMemory
    {
        DISABLE_COPY(DeviceMemory)
        friend class DeviceFrame;
        friend class ShaderProgram;
    public:
        enum class StorageType
        {
            // Uploaded once, drawn many times
            STATIC,
            
            // Created once, changed from time to time but drawn many times more than that
            DYNAMIC,
            
            // Uploaded once, drawn once (for example data that is changed every frame)
            STREAM
        };
        
        enum class PrimitiveType
        {
            TRIANGLE
        };
        
        ~DeviceMemory();
        //void copy(const DataView<f32> &data, StorageType storageType, PrimitiveType primitiveType = PrimitiveType::TRIANGLE);
        void copy(const DataView<Triangle2D> &triangles, StorageType storageType);
        void copy(const DataView<Triangle3D> &triangles, StorageType storageType);
        void draw();

        DeviceMemoryType get_type() const { return type; }
    private:
        DeviceMemory();
        void use() const;
    private:
        u32 vertexBufferObjectId;
        u32 primitiveType;
        u32 numVertices;
        DeviceMemoryType type;
    };
}