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virtualx-engine/scene/3d/baked_lightmap.h
Rémi Verschelde b5334d14f7
Update copyright statements to 2021 
Happy new year to the wonderful Godot community!

2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.

We've had close to 400 contributors to engine code this year, authoring near
7,000 commit! (And that's only for the `master` branch and for the engine code,
there's a lot more when counting docs, demos and other first-party repos.)

Here's to a great year 2021 for all Godot users 🎆
2021-01-01 20:19:21 +01:00

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/*************************************************************************/
/* baked_lightmap.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, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef BAKED_LIGHTMAP_H
#define BAKED_LIGHTMAP_H
#include "core/templates/local_vector.h"
#include "scene/3d/light_3d.h"
#include "scene/3d/lightmapper.h"
#include "scene/3d/mesh_instance_3d.h"
#include "scene/3d/multimesh_instance_3d.h"
#include "scene/3d/visual_instance_3d.h"
#include "scene/resources/sky.h"
class BakedLightmapData : public Resource {
GDCLASS(BakedLightmapData, Resource);
RES_BASE_EXTENSION("lmbake")
Ref<TextureLayered> light_texture;
bool uses_spherical_harmonics = false;
bool interior = false;
RID lightmap;
AABB bounds;
struct User {
NodePath path;
int32_t sub_instance;
Rect2 uv_scale;
int slice_index;
};
Vector<User> users;
void _set_user_data(const Array &p_data);
Array _get_user_data() const;
void _set_probe_data(const Dictionary &p_data);
Dictionary _get_probe_data() const;
protected:
static void _bind_methods();
public:
void add_user(const NodePath &p_path, const Rect2 &p_uv_scale, int p_slice_index, int32_t p_sub_instance = -1);
int get_user_count() const;
NodePath get_user_path(int p_user) const;
int32_t get_user_sub_instance(int p_user) const;
Rect2 get_user_lightmap_uv_scale(int p_user) const;
int get_user_lightmap_slice_index(int p_user) const;
void clear_users();
void set_light_texture(const Ref<TextureLayered> &p_light_texture);
Ref<TextureLayered> get_light_texture() const;
void set_uses_spherical_harmonics(bool p_enable);
bool is_using_spherical_harmonics() const;
bool is_interior() const;
void set_capture_data(const AABB &p_bounds, bool p_interior, const PackedVector3Array &p_points, const PackedColorArray &p_point_sh, const PackedInt32Array &p_tetrahedra, const PackedInt32Array &p_bsp_tree);
PackedVector3Array get_capture_points() const;
PackedColorArray get_capture_sh() const;
PackedInt32Array get_capture_tetrahedra() const;
PackedInt32Array get_capture_bsp_tree() const;
AABB get_capture_bounds() const;
void clear();
virtual RID get_rid() const override;
BakedLightmapData();
~BakedLightmapData();
};
class BakedLightmap : public VisualInstance3D {
GDCLASS(BakedLightmap, VisualInstance3D);
public:
enum BakeQuality {
BAKE_QUALITY_LOW,
BAKE_QUALITY_MEDIUM,
BAKE_QUALITY_HIGH,
BAKE_QUALITY_ULTRA,
};
enum GenerateProbes {
GENERATE_PROBES_DISABLED,
GENERATE_PROBES_SUBDIV_4,
GENERATE_PROBES_SUBDIV_8,
GENERATE_PROBES_SUBDIV_16,
GENERATE_PROBES_SUBDIV_32,
};
enum BakeError {
BAKE_ERROR_OK,
BAKE_ERROR_NO_LIGHTMAPPER,
BAKE_ERROR_NO_SAVE_PATH,
BAKE_ERROR_NO_MESHES,
BAKE_ERROR_MESHES_INVALID,
BAKE_ERROR_CANT_CREATE_IMAGE,
BAKE_ERROR_USER_ABORTED,
};
enum EnvironmentMode {
ENVIRONMENT_MODE_DISABLED,
ENVIRONMENT_MODE_SCENE,
ENVIRONMENT_MODE_CUSTOM_SKY,
ENVIRONMENT_MODE_CUSTOM_COLOR,
};
private:
BakeQuality bake_quality;
bool use_denoiser;
int bounces;
float bias;
int max_texture_size;
bool interior;
EnvironmentMode environment_mode;
Ref<Sky> environment_custom_sky;
Color environment_custom_color;
float environment_custom_energy;
bool directional;
GenerateProbes gen_probes;
Ref<BakedLightmapData> light_data;
struct LightsFound {
Transform xform;
Light3D *light;
};
struct MeshesFound {
Transform xform;
NodePath node_path;
int32_t subindex;
Ref<Mesh> mesh;
int32_t lightmap_scale;
Vector<Ref<Material>> overrides;
};
void _find_meshes_and_lights(Node *p_at_node, Vector<MeshesFound> &meshes, Vector<LightsFound> &lights, Vector<Vector3> &probes);
void _assign_lightmaps();
void _clear_lightmaps();
struct BakeTimeData {
String text;
int pass;
uint64_t last_step;
};
struct BSPSimplex {
int vertices[4];
int planes[4];
};
struct BSPNode {
static const int32_t EMPTY_LEAF = INT32_MIN;
Plane plane;
int32_t over = EMPTY_LEAF, under = EMPTY_LEAF;
};
int _bsp_get_simplex_side(const Vector<Vector3> &p_points, const LocalVector<BSPSimplex> &p_simplices, const Plane &p_plane, uint32_t p_simplex) const;
int32_t _compute_bsp_tree(const Vector<Vector3> &p_points, const LocalVector<Plane> &p_planes, LocalVector<int32_t> &planes_tested, const LocalVector<BSPSimplex> &p_simplices, const LocalVector<int32_t> &p_simplex_indices, LocalVector<BSPNode> &bsp_nodes);
struct BakeStepUD {
Lightmapper::BakeStepFunc func;
void *ud;
float from_percent;
float to_percent;
};
static bool _lightmap_bake_step_function(float p_completion, const String &p_text, void *ud, bool p_refresh);
struct GenProbesOctree {
Vector3i offset;
uint32_t size;
GenProbesOctree *children[8] = { nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr };
~GenProbesOctree() {
for (int i = 0; i < 8; i++) {
if (children[i] != nullptr) {
memdelete(children[i]);
}
}
}
};
struct Vector3iHash {
_FORCE_INLINE_ static uint32_t hash(const Vector3i &p_vtx) {
uint32_t h = hash_djb2_one_32(p_vtx.x);
h = hash_djb2_one_32(p_vtx.y, h);
return hash_djb2_one_32(p_vtx.z, h);
}
};
void _plot_triangle_into_octree(GenProbesOctree *p_cell, float p_cell_size, const Vector3 *p_triangle);
void _gen_new_positions_from_octree(const GenProbesOctree *p_cell, float p_cell_size, const Vector<Vector3> &probe_positions, LocalVector<Vector3> &new_probe_positions, HashMap<Vector3i, bool, Vector3iHash> &positions_used, const AABB &p_bounds);
protected:
void _validate_property(PropertyInfo &property) const override;
static void _bind_methods();
void _notification(int p_what);
public:
void set_light_data(const Ref<BakedLightmapData> &p_data);
Ref<BakedLightmapData> get_light_data() const;
void set_bake_quality(BakeQuality p_quality);
BakeQuality get_bake_quality() const;
void set_use_denoiser(bool p_enable);
bool is_using_denoiser() const;
void set_directional(bool p_enable);
bool is_directional() const;
void set_interior(bool p_interior);
bool is_interior() const;
void set_environment_mode(EnvironmentMode p_mode);
EnvironmentMode get_environment_mode() const;
void set_environment_custom_sky(const Ref<Sky> &p_sky);
Ref<Sky> get_environment_custom_sky() const;
void set_environment_custom_color(const Color &p_color);
Color get_environment_custom_color() const;
void set_environment_custom_energy(float p_energy);
float get_environment_custom_energy() const;
void set_bounces(int p_bounces);
int get_bounces() const;
void set_bias(float p_bias);
float get_bias() const;
void set_max_texture_size(int p_size);
int get_max_texture_size() const;
void set_generate_probes(GenerateProbes p_generate_probes);
GenerateProbes get_generate_probes() const;
AABB get_aabb() const override;
Vector<Face3> get_faces(uint32_t p_usage_flags) const override;
BakeError bake(Node *p_from_node, String p_image_data_path = "", Lightmapper::BakeStepFunc p_bake_step = nullptr, void *p_bake_userdata = nullptr);
BakedLightmap();
};
VARIANT_ENUM_CAST(BakedLightmap::BakeQuality);
VARIANT_ENUM_CAST(BakedLightmap::GenerateProbes);
VARIANT_ENUM_CAST(BakedLightmap::BakeError);
VARIANT_ENUM_CAST(BakedLightmap::EnvironmentMode);
#endif // BAKED_LIGHTMAP_H
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