godot/scene/3d/voxelizer.cpp

/**************************************************************************/
/*  voxelizer.cpp                                                         */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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.                 */
/**************************************************************************/

#include "voxelizer.h"

#include "core/config/project_settings.h"

static _FORCE_INLINE_ void get_uv_and_normal(const Vector3 &p_pos, const Vector3 *p_vtx, const Vector2 *p_uv, const Vector3 *p_normal, Vector2 &r_uv, Vector3 &r_normal) { … }

void Voxelizer::_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) { … }

Vector<Color> Voxelizer::_get_bake_texture(Ref<Image> p_image, const Color &p_color_mul, const Color &p_color_add) { … }

Voxelizer::MaterialCache Voxelizer::_get_material_cache(Ref<Material> p_material) { … }

void Voxelizer::plot_mesh(const Transform3D &p_xform, Ref<Mesh> &p_mesh, const Vector<Ref<Material>> &p_materials, const Ref<Material> &p_override_material) { … }

void Voxelizer::_sort() { … }

void Voxelizer::_fixup_plot(int p_idx, int p_level) { … }

void Voxelizer::begin_bake(int p_subdiv, const AABB &p_bounds, float p_exposure_normalization) { … }

void Voxelizer::end_bake() { … }

//create the data for rendering server

int Voxelizer::get_voxel_gi_octree_depth() const { … }

Vector3i Voxelizer::get_voxel_gi_octree_size() const { … }

int Voxelizer::get_voxel_gi_cell_count() const { … }

Vector<uint8_t> Voxelizer::get_voxel_gi_octree_cells() const { … }

Vector<uint8_t> Voxelizer::get_voxel_gi_data_cells() const { … }

Vector<int> Voxelizer::get_voxel_gi_level_cell_count() const { … }

// euclidean distance computation based on:
// https://prideout.net/blog/distance_fields/

#define square …
#define INF …

/* dt of 1d function using squared distance */
static void edt(float *f, int stride, int n) { … }

#undef square

Vector<uint8_t> Voxelizer::get_sdf_3d_image() const { … }

#undef INF

void Voxelizer::_debug_mesh(int p_idx, int p_level, const AABB &p_aabb, Ref<MultiMesh> &p_multimesh, int &idx) { … }

Ref<MultiMesh> Voxelizer::create_debug_multimesh() { … }

Transform3D Voxelizer::get_to_cell_space_xform() const { … }

Voxelizer::Voxelizer() { … }