49646383f1
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 🎆
(cherry picked from commit b5334d14f7)
192 lines
6.8 KiB
C++
192 lines
6.8 KiB
C++
/*************************************************************************/
|
|
/* voxel_light_baker.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 VOXEL_LIGHT_BAKER_H
|
|
#define VOXEL_LIGHT_BAKER_H
|
|
|
|
#include "scene/3d/mesh_instance.h"
|
|
#include "scene/resources/multimesh.h"
|
|
|
|
class VoxelLightBaker {
|
|
public:
|
|
enum DebugMode {
|
|
DEBUG_ALBEDO,
|
|
DEBUG_LIGHT
|
|
};
|
|
|
|
enum BakeQuality {
|
|
BAKE_QUALITY_LOW,
|
|
BAKE_QUALITY_MEDIUM,
|
|
BAKE_QUALITY_HIGH
|
|
};
|
|
|
|
enum BakeMode {
|
|
BAKE_MODE_CONE_TRACE,
|
|
BAKE_MODE_RAY_TRACE,
|
|
};
|
|
|
|
private:
|
|
enum {
|
|
CHILD_EMPTY = 0xFFFFFFFF
|
|
|
|
};
|
|
|
|
struct Cell {
|
|
|
|
uint32_t children[8];
|
|
float albedo[3]; //albedo in RGB24
|
|
float emission[3]; //accumulated light in 16:16 fixed point (needs to be integer for moving lights fast)
|
|
float normal[3];
|
|
uint32_t used_sides;
|
|
float alpha; //used for upsampling
|
|
int level;
|
|
|
|
Cell() {
|
|
for (int i = 0; i < 8; i++) {
|
|
children[i] = CHILD_EMPTY;
|
|
}
|
|
|
|
for (int i = 0; i < 3; i++) {
|
|
emission[i] = 0;
|
|
albedo[i] = 0;
|
|
normal[i] = 0;
|
|
}
|
|
alpha = 0;
|
|
used_sides = 0;
|
|
level = 0;
|
|
}
|
|
};
|
|
|
|
Vector<Cell> bake_cells;
|
|
int cell_subdiv;
|
|
|
|
struct Light {
|
|
int x, y, z;
|
|
float accum[6][3]; //rgb anisotropic
|
|
float direct_accum[6][3]; //for direct bake
|
|
int next_leaf;
|
|
Light() {
|
|
x = y = z = 0;
|
|
for (int i = 0; i < 6; i++) {
|
|
for (int j = 0; j < 3; j++) {
|
|
accum[i][j] = 0;
|
|
direct_accum[i][j] = 0;
|
|
}
|
|
}
|
|
next_leaf = 0;
|
|
}
|
|
};
|
|
|
|
int first_leaf;
|
|
|
|
Vector<Light> bake_light;
|
|
|
|
struct MaterialCache {
|
|
//128x128 textures
|
|
Vector<Color> albedo;
|
|
Vector<Color> emission;
|
|
};
|
|
|
|
Map<Ref<Material>, MaterialCache> material_cache;
|
|
int leaf_voxel_count;
|
|
bool direct_lights_baked;
|
|
|
|
AABB original_bounds;
|
|
AABB po2_bounds;
|
|
int axis_cell_size[3];
|
|
|
|
Transform to_cell_space;
|
|
|
|
int color_scan_cell_width;
|
|
int bake_texture_size;
|
|
float cell_size;
|
|
float propagation;
|
|
float energy;
|
|
|
|
BakeQuality bake_quality;
|
|
BakeMode bake_mode;
|
|
|
|
int max_original_cells;
|
|
|
|
void _init_light_plot(int p_idx, int p_level, int p_x, int p_y, int p_z, uint32_t p_parent);
|
|
|
|
Vector<Color> _get_bake_texture(Ref<Image> p_image, const Color &p_color_mul, const Color &p_color_add);
|
|
MaterialCache _get_material_cache(Ref<Material> p_material);
|
|
|
|
void _plot_face(int p_idx, int p_level, int p_x, int p_y, int p_z, const Vector3 *p_vtx, const Vector3 *p_normal, const Vector2 *p_uv, const MaterialCache &p_material, const AABB &p_aabb);
|
|
void _fixup_plot(int p_idx, int p_level);
|
|
void _debug_mesh(int p_idx, int p_level, const AABB &p_aabb, Ref<MultiMesh> &p_multimesh, int &idx, DebugMode p_mode);
|
|
void _check_init_light();
|
|
|
|
uint32_t _find_cell_at_pos(const Cell *cells, int x, int y, int z);
|
|
|
|
struct LightMap {
|
|
Vector3 light;
|
|
Vector3 pos;
|
|
Vector3 normal;
|
|
};
|
|
|
|
void _plot_triangle(Vector2 *vertices, Vector3 *positions, Vector3 *normals, LightMap *pixels, int width, int height);
|
|
|
|
_FORCE_INLINE_ void _sample_baked_octree_filtered_and_anisotropic(const Vector3 &p_posf, const Vector3 &p_direction, float p_level, Vector3 &r_color, float &r_alpha);
|
|
_FORCE_INLINE_ Vector3 _voxel_cone_trace(const Vector3 &p_pos, const Vector3 &p_normal, float p_aperture);
|
|
_FORCE_INLINE_ Vector3 _compute_pixel_light_at_pos(const Vector3 &p_pos, const Vector3 &p_normal);
|
|
_FORCE_INLINE_ Vector3 _compute_ray_trace_at_pos(const Vector3 &p_pos, const Vector3 &p_normal);
|
|
|
|
void _lightmap_bake_point(uint32_t p_x, LightMap *p_line);
|
|
|
|
public:
|
|
void begin_bake(int p_subdiv, const AABB &p_bounds);
|
|
void plot_mesh(const Transform &p_xform, Ref<Mesh> &p_mesh, const Vector<Ref<Material> > &p_materials, const Ref<Material> &p_override_material);
|
|
void begin_bake_light(BakeQuality p_quality = BAKE_QUALITY_MEDIUM, BakeMode p_bake_mode = BAKE_MODE_CONE_TRACE, float p_propagation = 0.85, float p_energy = 1);
|
|
void plot_light_directional(const Vector3 &p_direction, const Color &p_color, float p_energy, float p_indirect_energy, bool p_direct);
|
|
void plot_light_omni(const Vector3 &p_pos, const Color &p_color, float p_energy, float p_indirect_energy, float p_radius, float p_attenutation, bool p_direct);
|
|
void plot_light_spot(const Vector3 &p_pos, const Vector3 &p_axis, const Color &p_color, float p_energy, float p_indirect_energy, float p_radius, float p_attenutation, float p_spot_angle, float p_spot_attenuation, bool p_direct);
|
|
void end_bake();
|
|
|
|
struct LightMapData {
|
|
int width;
|
|
int height;
|
|
PoolVector<float> light;
|
|
};
|
|
|
|
Error make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh, float default_texels_per_unit, LightMapData &r_lightmap, bool (*p_bake_time_func)(void *, float, float) = NULL, void *p_bake_time_ud = NULL);
|
|
|
|
PoolVector<int> create_gi_probe_data();
|
|
Ref<MultiMesh> create_debug_multimesh(DebugMode p_mode = DEBUG_ALBEDO);
|
|
PoolVector<uint8_t> create_capture_octree(int p_subdiv);
|
|
|
|
float get_cell_size() const;
|
|
Transform get_to_cell_space_xform() const;
|
|
VoxelLightBaker();
|
|
};
|
|
|
|
#endif // VOXEL_LIGHT_BAKER_H
|