1 files changed, 90 insertions, 0 deletions
diff --git a/scene/3d/lightmapper.h b/scene/3d/lightmapper.h
new file mode 100644
index 0000000000..7c052a30a0
--- /dev/null
+++ b/scene/3d/lightmapper.h
@@ -0,0 +1,90 @@
+#ifndef LIGHTMAPPER_H
+#define LIGHTMAPPER_H
+
+#include "scene/resources/mesh.h"
+#include "servers/rendering/rendering_device.h"
+
+class LightmapDenoiser : public Reference {
+	GDCLASS(LightmapDenoiser, Reference)
+protected:
+	static LightmapDenoiser *(*create_function)();
+
+public:
+	virtual Ref<Image> denoise_image(const Ref<Image> &p_image) = 0;
+	static Ref<LightmapDenoiser> create();
+};
+
+class Lightmapper : public Reference {
+	GDCLASS(Lightmapper, Reference)
+public:
+	enum GenerateProbes {
+		GENERATE_PROBES_DISABLED,
+		GENERATE_PROBES_SUBDIV_4,
+		GENERATE_PROBES_SUBDIV_8,
+		GENERATE_PROBES_SUBDIV_16,
+		GENERATE_PROBES_SUBDIV_32,
+
+	};
+
+	enum LightType {
+		LIGHT_TYPE_DIRECTIONAL,
+		LIGHT_TYPE_OMNI,
+		LIGHT_TYPE_SPOT
+	};
+
+	enum BakeError {
+		BAKE_ERROR_LIGHTMAP_TOO_SMALL,
+		BAKE_ERROR_LIGHTMAP_CANT_PRE_BAKE_MESHES,
+		BAKE_OK
+	};
+
+	enum BakeQuality {
+		BAKE_QUALITY_LOW,
+		BAKE_QUALITY_MEDIUM,
+		BAKE_QUALITY_HIGH,
+		BAKE_QUALITY_ULTRA,
+	};
+
+	typedef Lightmapper *(*CreateFunc)();
+
+	static CreateFunc create_custom;
+	static CreateFunc create_gpu;
+	static CreateFunc create_cpu;
+
+protected:
+public:
+	typedef bool (*BakeStepFunc)(float, const String &, void *, bool); //step index, step total, step description, userdata
+
+	struct MeshData {
+		//triangle data
+		Vector<Vector3> points;
+		Vector<Vector2> uv2;
+		Vector<Vector3> normal;
+		Ref<Image> albedo_on_uv2;
+		Ref<Image> emission_on_uv2;
+		Variant userdata;
+	};
+
+	virtual void add_mesh(const MeshData &p_mesh) = 0;
+	virtual void add_directional_light(bool p_static, const Vector3 &p_direction, const Color &p_color, float p_energy, float p_angular_distance) = 0;
+	virtual void add_omni_light(bool p_static, const Vector3 &p_position, const Color &p_color, float p_energy, float p_range, float p_attenuation, float p_size) = 0;
+	virtual void add_spot_light(bool p_static, const Vector3 &p_position, const Vector3 p_direction, const Color &p_color, float p_energy, float p_range, float p_attenuation, float p_spot_angle, float p_spot_attenuation, float p_size) = 0;
+	virtual void add_probe(const Vector3 &p_position) = 0;
+	virtual BakeError bake(BakeQuality p_quality, bool p_use_denoiser, int p_bounces, float p_bias, int p_max_texture_size, bool p_bake_sh, GenerateProbes p_generate_probes, const Ref<Image> &p_environment_panorama, const Basis &p_environment_transform, BakeStepFunc p_step_function = nullptr, void *p_step_userdata = nullptr) = 0;
+
+	virtual int get_bake_texture_count() const = 0;
+	virtual Ref<Image> get_bake_texture(int p_index) const = 0;
+	virtual int get_bake_mesh_count() const = 0;
+	virtual Variant get_bake_mesh_userdata(int p_index) const = 0;
+	virtual Rect2 get_bake_mesh_uv_scale(int p_index) const = 0;
+	virtual int get_bake_mesh_texture_slice(int p_index) const = 0;
+	virtual int get_bake_probe_count() const = 0;
+	virtual Vector3 get_bake_probe_point(int p_probe) const = 0;
+	virtual Vector<Color> get_bake_probe_sh(int p_probe) const = 0;
+
+	static Ref<Lightmapper> create();
+
+	Lightmapper();
+};
+
+#endif // LIGHTMAPPER_H