// Copyright (c) 2022 Dominic Masters
// 
// This software is released under the MIT License.
// https://opensource.org/licenses/MIT

#pragma once
#include "dawnopengl.hpp"
#include "assert/assertgl.hpp"
#include "display/RenderTarget.hpp"

namespace Dawn {
  class RenderManager;

  class BackBufferRenderTarget : public RenderTarget {
    private:
      float_t width = 1;
      float_t height = 1; 
      struct Color clearColor = COLOR_CORNFLOWER_BLUE;

    public:
      float_t scale = 1.0f;

      /**
       * Construct the back buffer render target.
       */
      BackBufferRenderTarget();

      /**
       * Requests to modify the viewport directly. This is mostly to be called
       * by whatever is setting the window/display resolution, so that the
       * backbuffer can keep track of what the viewport size is. This should
       * also be DPI aware, e.g. "4k @ 2xDPI, resulting in a 1080p equiv" should
       * still call this method with 3840, 2160.
       * 
       * @param width New width of the back buffer.
       * @param height New height of the back buffer.
       */
      void setSize(const float_t width, const float_t height);

      float_t getScale() override;
      float_t getWidth() override;
      float_t getHeight() override;
      void setClearColor(const struct Color color) override;
      void clear(const flag8_t clearFlags) override;
      void bind() override;
  };
}