using OpenTK.Graphics.OpenGL;

namespace Engine.Renderer.Framebuffer;

public class Renderbuffer : OpenGlObject
{
    public int Width { get; private set; }
    public int Height { get; private set; }

    private readonly RenderbufferStorage _format;

    public Renderbuffer(int width, int height, RenderbufferStorage format)
    {
        Width = width;
        Height = height;
        _format = format;

        GL.CreateRenderbuffers(1, out int handle);
        Handle = handle;

        GL.NamedRenderbufferStorage(Handle, _format, Width, Height);
    }

    public void Resize(int width, int height)
    {
        if (Width == width && Height == height)
            return;

        Width = width;
        Height = height;

        GL.NamedRenderbufferStorage(Handle, _format, Width, Height);
    }

    internal override void Bind()
    {
        GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, Handle);
    }

    internal override void Unbind()
    {
        GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0);
    }

    protected override void Destroy()
    {
        GL.DeleteRenderbuffer(Handle);
    }
}