1 files changed, 77 insertions, 0 deletions
diff --git a/scene/3d/lightmapper.h b/scene/3d/lightmapper.h
index a07a964c01..f63515f666 100644
--- a/scene/3d/lightmapper.h
+++ b/scene/3d/lightmapper.h
@@ -34,6 +34,16 @@
 #include "scene/resources/mesh.h"
 #include "servers/rendering/rendering_device.h"
 
+#if !defined(__aligned)
+
+#if defined(_WIN32) && defined(_MSC_VER)
+#define __aligned(...) __declspec(align(__VA_ARGS__))
+#else
+#define __aligned(...) __attribute__((aligned(__VA_ARGS__)))
+#endif
+
+#endif
+
 class LightmapDenoiser : public Reference {
 	GDCLASS(LightmapDenoiser, Reference)
 protected:
@@ -44,6 +54,73 @@ public:
 	static Ref<LightmapDenoiser> create();
 };
 
+class LightmapRaycaster : public Reference {
+	GDCLASS(LightmapRaycaster, Reference)
+protected:
+	static LightmapRaycaster *(*create_function)();
+
+public:
+	// compatible with embree3 rays
+	struct __aligned(16) Ray {
+		const static unsigned int INVALID_GEOMETRY_ID = ((unsigned int)-1); // from rtcore_common.h
+
+		/*! Default construction does nothing. */
+		_FORCE_INLINE_ Ray() :
+				geomID(INVALID_GEOMETRY_ID) {}
+
+		/*! Constructs a ray from origin, direction, and ray segment. Near
+		 *  has to be smaller than far. */
+		_FORCE_INLINE_ Ray(const Vector3 &org,
+				const Vector3 &dir,
+				float tnear = 0.0f,
+				float tfar = INFINITY) :
+				org(org),
+				tnear(tnear),
+				dir(dir),
+				time(0.0f),
+				tfar(tfar),
+				mask(-1),
+				u(0.0),
+				v(0.0),
+				primID(INVALID_GEOMETRY_ID),
+				geomID(INVALID_GEOMETRY_ID),
+				instID(INVALID_GEOMETRY_ID) {}
+
+		/*! Tests if we hit something. */
+		_FORCE_INLINE_ explicit operator bool() const { return geomID != INVALID_GEOMETRY_ID; }
+
+	public:
+		Vector3 org; //!< Ray origin + tnear
+		float tnear; //!< Start of ray segment
+		Vector3 dir; //!< Ray direction + tfar
+		float time; //!< Time of this ray for motion blur.
+		float tfar; //!< End of ray segment
+		unsigned int mask; //!< used to mask out objects during traversal
+		unsigned int id; //!< ray ID
+		unsigned int flags; //!< ray flags
+
+		Vector3 normal; //!< Not normalized geometry normal
+		float u; //!< Barycentric u coordinate of hit
+		float v; //!< Barycentric v coordinate of hit
+		unsigned int primID; //!< primitive ID
+		unsigned int geomID; //!< geometry ID
+		unsigned int instID; //!< instance ID
+	};
+
+	virtual bool intersect(Ray &p_ray) = 0;
+
+	virtual void intersect(Vector<Ray> &r_rays) = 0;
+
+	virtual void add_mesh(const Vector<Vector3> &p_vertices, const Vector<Vector3> &p_normals, const Vector<Vector2> &p_uv2s, unsigned int p_id) = 0;
+	virtual void set_mesh_alpha_texture(Ref<Image> p_alpha_texture, unsigned int p_id) = 0;
+	virtual void commit() = 0;
+
+	virtual void set_mesh_filter(const Set<int> &p_mesh_ids) = 0;
+	virtual void clear_mesh_filter() = 0;
+
+	static Ref<LightmapRaycaster> create();
+};
+
 class Lightmapper : public Reference {
 	GDCLASS(Lightmapper, Reference)
 public: