GfxContext, render refactor

src/graphics/Viewport.h

@@ -0,0 +1,22 @@
+#ifndef GRAPHICS_VIEWPORT_H_
+#define GRAPHICS_VIEWPORT_H_
+
+#include <glm/glm.hpp>
+
+#include "../typedefs.h"
+
+class Viewport {
+    uint width;
+    uint height;
+public:
+    Viewport(uint width, uint height);
+
+    virtual uint getWidth() const;
+    virtual uint getHeight() const;
+
+    glm::vec2 size() const {
+        return glm::vec2(width, height);
+    }
+};
+
+#endif // GRAPHICS_VIEWPORT_H_