#include "OpenGLVertexBuffer.h"
#include "Rendering/VertexBuffer.h"

#include <glad/glad.h>

namespace Donut 
{
    OpenGLVertexBuffer::OpenGLVertexBuffer(const void* data, uint32_t size)
    {
        glGenBuffers(1, &m_RendererID); // glCreateBuffers is 4.5 DSA; unavailable on macOS 4.1
        glBindBuffer(GL_ARRAY_BUFFER, m_RendererID);
        glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);
    }

    OpenGLVertexBuffer::~OpenGLVertexBuffer()
    {
        glDeleteBuffers(1, &m_RendererID);
    }

    void OpenGLVertexBuffer::Bind() const
    {
        glBindBuffer(GL_ARRAY_BUFFER, m_RendererID);
    }

    void OpenGLVertexBuffer::Unbind() const
    {
        glBindBuffer(GL_ARRAY_BUFFER, 0);
    }

    void OpenGLVertexBuffer::SetData(const void* data, uint32_t size)
    {
        glBindBuffer(GL_ARRAY_BUFFER, m_RendererID);
        glBufferSubData(GL_ARRAY_BUFFER, 0, size, data);
    }
};