use bitflags::bitflags;
use glfw::WindowSize;

use crate::vector::Vec2;

pub mod currently_bound;
pub mod shader;
pub mod vertex_array;
pub mod vertex_buffer;

pub fn set_viewport(position: &Vec2<u32>, size: &WindowSize)
{
    unsafe {
        #[allow(clippy::cast_possible_wrap)]
        gl::Viewport(
            position.x as i32,
            position.y as i32,
            size.width as i32,
            size.height as i32,
        );
    }
}

pub fn clear_buffers(mask: BufferClearMask)
{
    unsafe {
        gl::Clear(mask.bits());
    }
}

bitflags! {
    #[derive(Debug, Clone, Copy)]
    pub struct BufferClearMask: u32 {
        const COLOR = gl::COLOR_BUFFER_BIT;
        const DEPTH = gl::DEPTH_BUFFER_BIT;
        const STENCIL = gl::STENCIL_BUFFER_BIT;
    }
}