Class DisplayViewSystem

src/UI/DisplayView/DisplayViewSystem.h:18–174

class RenderWindow;

class DisplayViewSystem
{
public:
	// Default texture unit for displaying most of things
	static constexpr int DISPLAY_TEXTURE_UNIT_1 = 1;
	// Second display texture used when we want to blend between two displays
	static constexpr int DISPLAY_TEXTURE_UNIT_2 = 2;
	// Texture unit reserved for the compute shader screenshoter
	static constexpr int DISPLAY_COMPUTE_IMAGE_UNIT = 3;

	DisplayViewSystem(std::shared_ptr<GPURenderer> renderer, RenderWindow* render_window);
	~DisplayViewSystem();

	void configure_framebuffer();
	void resize_framebuffer();

	DisplayViewType get_current_display_view_type();
	const DisplayView* get_current_display_view() const;
	std::shared_ptr<OpenGLProgram> get_active_display_program();
	DisplaySettings& get_display_settings();

	/**
	 * Applies queued changes (such as changing the display view for example)
	 * 
	 * Returns true if the display view was changed. False otherwise
	 */
	bool update_selected_display_view();

	/**
	 * Returns true if the current display view needs the adaptive sampling buffers for
	 * displaying
	 */
	bool current_display_view_needs_adaptive_sampling_buffers();

	/**
	 * Displays the currently active texture view onto the viewport
	 */
	void display();

	/**
	 * Queues a change of display view that will take effect upon calling update()
	 */
	void queue_display_view_change(DisplayViewType display_view);

	bool get_render_low_resolution() const;
	/**
	 * Sets whether or not thje next display() call will display the given texture
	 * as a low render resolution texture or not
	 */
	void set_render_low_resolution(bool low_resolution_or_not);

	void resize(int new_render_width, int new_render_height);

	/**
	 * Updates the uniforms of an arbitrary input program given the state of the renderer and the applications settings given
	 */
	static void update_display_program_uniforms(const DisplayViewSystem* display_view_system, std::shared_ptr<OpenGLProgram> program, std::shared_ptr<GPURenderer> renderer, std::shared_ptr<ApplicationSettings> application_settings);