/*************************************************************************/
/*  fog.h                                                                */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
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/*************************************************************************/

#ifndef FOG_RD_H
#define FOG_RD_H

#include "core/templates/local_vector.h"
#include "core/templates/rid_owner.h"
#include "servers/rendering/environment/renderer_fog.h"
#include "servers/rendering/storage/utilities.h"

namespace RendererRD {

class Fog : public RendererFog {
public:
	struct FogVolume {
		RID material;
		Vector3 extents = Vector3(1, 1, 1);

		RS::FogVolumeShape shape = RS::FOG_VOLUME_SHAPE_BOX;

		Dependency dependency;
	};

private:
	static Fog *singleton;

	mutable RID_Owner<FogVolume, true> fog_volume_owner;

public:
	static Fog *get_singleton() { return singleton; }

	Fog();
	~Fog();

	/* FOG VOLUMES */

	FogVolume *get_fog_volume(RID p_rid) { return fog_volume_owner.get_or_null(p_rid); };
	bool owns_fog_volume(RID p_rid) { return fog_volume_owner.owns(p_rid); };

	virtual RID fog_volume_allocate() override;
	virtual void fog_volume_initialize(RID p_rid) override;
	virtual void fog_free(RID p_rid) override;

	virtual void fog_volume_set_shape(RID p_fog_volume, RS::FogVolumeShape p_shape) override;
	virtual void fog_volume_set_extents(RID p_fog_volume, const Vector3 &p_extents) override;
	virtual void fog_volume_set_material(RID p_fog_volume, RID p_material) override;
	virtual RS::FogVolumeShape fog_volume_get_shape(RID p_fog_volume) const override;
	RID fog_volume_get_material(RID p_fog_volume) const;
	virtual AABB fog_volume_get_aabb(RID p_fog_volume) const override;
	Vector3 fog_volume_get_extents(RID p_fog_volume) const;
};

} // namespace RendererRD

#endif // FOG_RD_H