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Diffstat (limited to 'scene/3d/voxelizer.h')
| -rw-r--r-- | scene/3d/voxelizer.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/scene/3d/voxelizer.h b/scene/3d/voxelizer.h new file mode 100644 index 0000000000..1d50f1cd18 --- /dev/null +++ b/scene/3d/voxelizer.h @@ -0,0 +1,145 @@ +/*************************************************************************/ +/* voxelizer.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 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 "core/math/vector3i.h" +#include "scene/3d/mesh_instance.h" +#include "scene/resources/multimesh.h" + +class Voxelizer { +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 + uint16_t x; + uint16_t y; + uint16_t z; + uint16_t 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; + x = y = z = 0; + level = 0; + } + }; + + Vector<Cell> bake_cells; + int cell_subdiv; + + struct CellSort { + union { + struct { + uint64_t z : 16; + uint64_t y : 16; + uint64_t x : 16; + uint64_t level : 16; + }; + uint64_t key; + }; + + int32_t index; + + _FORCE_INLINE_ bool operator<(const CellSort &p_cell_sort) const { + return key < p_cell_sort.key; + } + }; + + struct MaterialCache { + //128x128 textures + Vector<Color> albedo; + Vector<Color> emission; + }; + + Map<Ref<Material>, MaterialCache> material_cache; + 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; + + int max_original_cells; + int leaf_voxel_count; + + 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); + + bool sorted; + void _sort(); + +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 end_bake(); + + int get_gi_probe_octree_depth() const; + Vector3i get_giprobe_octree_size() const; + int get_giprobe_cell_count() const; + Vector<uint8_t> get_giprobe_octree_cells() const; + Vector<uint8_t> get_giprobe_data_cells() const; + Vector<int> get_giprobe_level_cell_count() const; + Vector<uint8_t> get_sdf_3d_image() const; + + Ref<MultiMesh> create_debug_multimesh(); + + Transform get_to_cell_space_xform() const; + Voxelizer(); +}; + +#endif // VOXEL_LIGHT_BAKER_H |