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src/dawnopengl/display/BackBufferRenderTarget.hpp

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+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "display/Color.hpp"
+#include "display/RenderTarget.hpp"
+
+namespace Dawn {
+  class BackBufferRenderTarget final : 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();
+
+      float_t getScale() override;
+      float_t getWidth() override;
+      float_t getHeight() override;
+      void setClearColor(const struct Color color) override;
+      void clear(const enum RenderTargetClearFlag) override;
+      void bind() override;
+
+      /**
+       * 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);
+  };
+}