godot/modules/raycast/lightmap_raycaster.h
jfons 4d9d99bb82 Implement occlusion culling
Added an occlusion culling system with support for static occluder meshes.
It can be enabled via `Project Settings > Rendering > Occlusion Culling > Use Occlusion Culling`.

Occluders are defined via the new `Occluder3D` resource and instanced using the new
`OccluderInstance3D` node. The occluders can also be automatically baked from a
scene using the built-in editor plugin.
2021-04-23 21:45:23 +02:00

78 lines
3.4 KiB
C++

/*************************************************************************/
/* lightmap_raycaster.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifdef TOOLS_ENABLED
#include "core/object/object.h"
#include "scene/3d/lightmapper.h"
#include "scene/resources/mesh.h"
#include <embree3/rtcore.h>
class LightmapRaycasterEmbree : public LightmapRaycaster {
GDCLASS(LightmapRaycasterEmbree, LightmapRaycaster);
private:
struct AlphaTextureData {
Vector<uint8_t> data;
Vector2i size;
uint8_t sample(float u, float v) const;
};
RTCDevice embree_device;
RTCScene embree_scene;
static void filter_function(const struct RTCFilterFunctionNArguments *p_args);
Map<unsigned int, AlphaTextureData> alpha_textures;
Set<int> filter_meshes;
public:
virtual bool intersect(Ray &p_ray) override;
virtual void intersect(Vector<Ray> &r_rays) override;
virtual void add_mesh(const Vector<Vector3> &p_vertices, const Vector<Vector3> &p_normals, const Vector<Vector2> &p_uv2s, unsigned int p_id) override;
virtual void set_mesh_alpha_texture(Ref<Image> p_alpha_texture, unsigned int p_id) override;
virtual void commit() override;
virtual void set_mesh_filter(const Set<int> &p_mesh_ids) override;
virtual void clear_mesh_filter() override;
static LightmapRaycaster *create_embree_raycaster();
static void make_default_raycaster();
LightmapRaycasterEmbree();
~LightmapRaycasterEmbree();
};
#endif