/*************************************************************************/
/*  texture_storage.h                                                    */
/*************************************************************************/
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#ifndef TEXTURE_STORAGE_DUMMY_H
#define TEXTURE_STORAGE_DUMMY_H

#include "servers/rendering/rendering_server_globals.h"
#include "servers/rendering/storage/texture_storage.h"

namespace RendererDummy {

class TextureStorage : public RendererTextureStorage {
private:
	struct DummyTexture {
		Ref<Image> image;
	};
	mutable RID_PtrOwner<DummyTexture> texture_owner;

public:
	static TextureStorage *get_singleton() {
		// Here we cheat until we can retire RasterizerStorageDummy::free()

		return (TextureStorage *)RSG::texture_storage;
	};

	virtual bool can_create_resources_async() const override { return false; }

	DummyTexture *get_texture(RID p_rid) { return texture_owner.get_or_null(p_rid); };
	bool owns_texture(RID p_rid) { return texture_owner.owns(p_rid); };

	virtual RID texture_allocate() override {
		DummyTexture *texture = memnew(DummyTexture);
		ERR_FAIL_COND_V(!texture, RID());
		return texture_owner.make_rid(texture);
	};

	virtual void texture_free(RID p_rid) override {
		// delete the texture
		DummyTexture *texture = texture_owner.get_or_null(p_rid);
		texture_owner.free(p_rid);
		memdelete(texture);
	};

	virtual void texture_2d_initialize(RID p_texture, const Ref<Image> &p_image) override {
		DummyTexture *t = texture_owner.get_or_null(p_texture);
		ERR_FAIL_COND(!t);
		t->image = p_image->duplicate();
	};
	virtual void texture_2d_layered_initialize(RID p_texture, const Vector<Ref<Image>> &p_layers, RS::TextureLayeredType p_layered_type) override{};
	virtual void texture_3d_initialize(RID p_texture, Image::Format, int p_width, int p_height, int p_depth, bool p_mipmaps, const Vector<Ref<Image>> &p_data) override{};
	virtual void texture_proxy_initialize(RID p_texture, RID p_base) override{}; //all slices, then all the mipmaps, must be coherent

	virtual void texture_2d_update(RID p_texture, const Ref<Image> &p_image, int p_layer = 0) override{};
	virtual void texture_3d_update(RID p_texture, const Vector<Ref<Image>> &p_data) override{};
	virtual void texture_proxy_update(RID p_proxy, RID p_base) override{};

	//these two APIs can be used together or in combination with the others.
	virtual void texture_2d_placeholder_initialize(RID p_texture) override{};
	virtual void texture_2d_layered_placeholder_initialize(RID p_texture, RenderingServer::TextureLayeredType p_layered_type) override{};
	virtual void texture_3d_placeholder_initialize(RID p_texture) override{};

	virtual Ref<Image> texture_2d_get(RID p_texture) const override {
		DummyTexture *t = texture_owner.get_or_null(p_texture);
		ERR_FAIL_COND_V(!t, Ref<Image>());
		return t->image;
	};
	virtual Ref<Image> texture_2d_layer_get(RID p_texture, int p_layer) const override { return Ref<Image>(); };
	virtual Vector<Ref<Image>> texture_3d_get(RID p_texture) const override { return Vector<Ref<Image>>(); };

	virtual void texture_replace(RID p_texture, RID p_by_texture) override { texture_free(p_by_texture); };
	virtual void texture_set_size_override(RID p_texture, int p_width, int p_height) override{};

	virtual void texture_set_path(RID p_texture, const String &p_path) override{};
	virtual String texture_get_path(RID p_texture) const override { return String(); };

	virtual void texture_set_detect_3d_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) override{};
	virtual void texture_set_detect_normal_callback(RID p_texture, RS::TextureDetectCallback p_callback, void *p_userdata) override{};
	virtual void texture_set_detect_roughness_callback(RID p_texture, RS::TextureDetectRoughnessCallback p_callback, void *p_userdata) override{};

	virtual void texture_debug_usage(List<RS::TextureInfo> *r_info) override{};

	virtual void texture_set_force_redraw_if_visible(RID p_texture, bool p_enable) override{};

	virtual Size2 texture_size_with_proxy(RID p_proxy) override { return Size2(); };
};

} // namespace RendererDummy

#endif // !TEXTURE_STORAGE_DUMMY_H