1/**************************************************************************/
2/* lightmap_raycaster_embree.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef LIGHTMAP_RAYCASTER_EMBREE_H
32#define LIGHTMAP_RAYCASTER_EMBREE_H
33
34#ifdef TOOLS_ENABLED
35
36#include "core/io/image.h"
37#include "core/object/object.h"
38#include "scene/3d/lightmapper.h"
39
40#include <embree3/rtcore.h>
41
42class LightmapRaycasterEmbree : public LightmapRaycaster {
43 GDCLASS(LightmapRaycasterEmbree, LightmapRaycaster);
44
45private:
46 struct AlphaTextureData {
47 Vector<uint8_t> data;
48 Vector2i size;
49
50 uint8_t sample(float u, float v) const;
51 };
52
53 RTCDevice embree_device;
54 RTCScene embree_scene;
55
56 static void filter_function(const struct RTCFilterFunctionNArguments *p_args);
57
58 HashMap<unsigned int, AlphaTextureData> alpha_textures;
59 HashSet<int> filter_meshes;
60
61public:
62 virtual bool intersect(Ray &p_ray) override;
63
64 virtual void intersect(Vector<Ray> &r_rays) override;
65
66 virtual void add_mesh(const Vector<Vector3> &p_vertices, const Vector<Vector3> &p_normals, const Vector<Vector2> &p_uv2s, unsigned int p_id) override;
67 virtual void set_mesh_alpha_texture(Ref<Image> p_alpha_texture, unsigned int p_id) override;
68 virtual void commit() override;
69
70 virtual void set_mesh_filter(const HashSet<int> &p_mesh_ids) override;
71 virtual void clear_mesh_filter() override;
72
73 static LightmapRaycaster *create_embree_raycaster();
74 static void make_default_raycaster();
75
76 LightmapRaycasterEmbree();
77 ~LightmapRaycasterEmbree();
78};
79
80#endif // TOOLS_ENABLED
81
82#endif // LIGHTMAP_RAYCASTER_EMBREE_H
83