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282 lines
9.1 KiB
C++
282 lines
9.1 KiB
C++
/*************************************************************************/
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/* lightmap_gi.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef LIGHTMAP_GI_H
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#define LIGHTMAP_GI_H
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#include "core/templates/local_vector.h"
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#include "scene/3d/light_3d.h"
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#include "scene/3d/lightmapper.h"
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#include "scene/3d/visual_instance_3d.h"
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class LightmapGIData : public Resource {
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GDCLASS(LightmapGIData, Resource);
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RES_BASE_EXTENSION("lmbake")
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Ref<TextureLayered> light_texture;
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bool uses_spherical_harmonics = false;
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bool interior = false;
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RID lightmap;
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AABB bounds;
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struct User {
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NodePath path;
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int32_t sub_instance = 0;
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Rect2 uv_scale;
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int slice_index = 0;
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};
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Vector<User> users;
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void _set_user_data(const Array &p_data);
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Array _get_user_data() const;
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void _set_probe_data(const Dictionary &p_data);
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Dictionary _get_probe_data() const;
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protected:
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static void _bind_methods();
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public:
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void add_user(const NodePath &p_path, const Rect2 &p_uv_scale, int p_slice_index, int32_t p_sub_instance = -1);
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int get_user_count() const;
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NodePath get_user_path(int p_user) const;
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int32_t get_user_sub_instance(int p_user) const;
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Rect2 get_user_lightmap_uv_scale(int p_user) const;
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int get_user_lightmap_slice_index(int p_user) const;
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void clear_users();
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void set_light_texture(const Ref<TextureLayered> &p_light_texture);
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Ref<TextureLayered> get_light_texture() const;
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void set_uses_spherical_harmonics(bool p_enable);
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bool is_using_spherical_harmonics() const;
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bool is_interior() const;
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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);
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PackedVector3Array get_capture_points() const;
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PackedColorArray get_capture_sh() const;
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PackedInt32Array get_capture_tetrahedra() const;
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PackedInt32Array get_capture_bsp_tree() const;
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AABB get_capture_bounds() const;
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void clear();
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virtual RID get_rid() const override;
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LightmapGIData();
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~LightmapGIData();
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};
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class LightmapGI : public VisualInstance3D {
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GDCLASS(LightmapGI, VisualInstance3D);
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public:
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enum BakeQuality {
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BAKE_QUALITY_LOW,
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BAKE_QUALITY_MEDIUM,
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BAKE_QUALITY_HIGH,
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BAKE_QUALITY_ULTRA,
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};
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enum GenerateProbes {
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GENERATE_PROBES_DISABLED,
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GENERATE_PROBES_SUBDIV_4,
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GENERATE_PROBES_SUBDIV_8,
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GENERATE_PROBES_SUBDIV_16,
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GENERATE_PROBES_SUBDIV_32,
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};
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enum BakeError {
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BAKE_ERROR_OK,
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BAKE_ERROR_NO_LIGHTMAPPER,
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BAKE_ERROR_NO_SAVE_PATH,
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BAKE_ERROR_NO_MESHES,
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BAKE_ERROR_MESHES_INVALID,
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BAKE_ERROR_CANT_CREATE_IMAGE,
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BAKE_ERROR_USER_ABORTED,
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};
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enum EnvironmentMode {
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ENVIRONMENT_MODE_DISABLED,
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ENVIRONMENT_MODE_SCENE,
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ENVIRONMENT_MODE_CUSTOM_SKY,
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ENVIRONMENT_MODE_CUSTOM_COLOR,
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};
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private:
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BakeQuality bake_quality = BAKE_QUALITY_MEDIUM;
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bool use_denoiser = true;
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int bounces = 1;
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float bias = 0.0005;
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int max_texture_size = 16384;
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bool interior = false;
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EnvironmentMode environment_mode = ENVIRONMENT_MODE_DISABLED;
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Ref<Sky> environment_custom_sky;
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Color environment_custom_color = Color(0.2, 0.7, 1.0);
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float environment_custom_energy = 1.0;
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bool directional = false;
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GenerateProbes gen_probes = GENERATE_PROBES_DISABLED;
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Ref<LightmapGIData> light_data;
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struct LightsFound {
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Transform3D xform;
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Light3D *light = nullptr;
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};
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struct MeshesFound {
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Transform3D xform;
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NodePath node_path;
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int32_t subindex = 0;
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Ref<Mesh> mesh;
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int32_t lightmap_scale = 0;
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Vector<Ref<Material>> overrides;
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};
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void _find_meshes_and_lights(Node *p_at_node, Vector<MeshesFound> &meshes, Vector<LightsFound> &lights, Vector<Vector3> &probes);
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void _assign_lightmaps();
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void _clear_lightmaps();
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struct BakeTimeData {
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String text;
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int pass = 0;
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uint64_t last_step = 0;
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};
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struct BSPSimplex {
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int vertices[4] = {};
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int planes[4] = {};
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};
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struct BSPNode {
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static const int32_t EMPTY_LEAF = INT32_MIN;
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Plane plane;
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int32_t over = EMPTY_LEAF;
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int32_t under = EMPTY_LEAF;
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};
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int _bsp_get_simplex_side(const Vector<Vector3> &p_points, const LocalVector<BSPSimplex> &p_simplices, const Plane &p_plane, uint32_t p_simplex) const;
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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);
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struct BakeStepUD {
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Lightmapper::BakeStepFunc func;
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void *ud = nullptr;
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float from_percent = 0.0;
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float to_percent = 0.0;
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};
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static bool _lightmap_bake_step_function(float p_completion, const String &p_text, void *ud, bool p_refresh);
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struct GenProbesOctree {
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Vector3i offset;
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uint32_t size = 0;
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GenProbesOctree *children[8] = { nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr };
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~GenProbesOctree() {
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for (int i = 0; i < 8; i++) {
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if (children[i] != nullptr) {
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memdelete(children[i]);
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}
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}
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}
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};
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struct Vector3iHash {
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_FORCE_INLINE_ static uint32_t hash(const Vector3i &p_vtx) {
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uint32_t h = hash_djb2_one_32(p_vtx.x);
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h = hash_djb2_one_32(p_vtx.y, h);
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return hash_djb2_one_32(p_vtx.z, h);
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}
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};
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void _plot_triangle_into_octree(GenProbesOctree *p_cell, float p_cell_size, const Vector3 *p_triangle);
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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);
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protected:
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void _validate_property(PropertyInfo &property) const override;
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static void _bind_methods();
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void _notification(int p_what);
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public:
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void set_light_data(const Ref<LightmapGIData> &p_data);
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Ref<LightmapGIData> get_light_data() const;
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void set_bake_quality(BakeQuality p_quality);
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BakeQuality get_bake_quality() const;
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void set_use_denoiser(bool p_enable);
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bool is_using_denoiser() const;
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void set_directional(bool p_enable);
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bool is_directional() const;
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void set_interior(bool p_interior);
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bool is_interior() const;
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void set_environment_mode(EnvironmentMode p_mode);
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EnvironmentMode get_environment_mode() const;
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void set_environment_custom_sky(const Ref<Sky> &p_sky);
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Ref<Sky> get_environment_custom_sky() const;
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void set_environment_custom_color(const Color &p_color);
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Color get_environment_custom_color() const;
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void set_environment_custom_energy(float p_energy);
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float get_environment_custom_energy() const;
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void set_bounces(int p_bounces);
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int get_bounces() const;
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void set_bias(float p_bias);
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float get_bias() const;
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void set_max_texture_size(int p_size);
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int get_max_texture_size() const;
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void set_generate_probes(GenerateProbes p_generate_probes);
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GenerateProbes get_generate_probes() const;
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AABB get_aabb() const override;
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Vector<Face3> get_faces(uint32_t p_usage_flags) const override;
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BakeError bake(Node *p_from_node, String p_image_data_path = "", Lightmapper::BakeStepFunc p_bake_step = nullptr, void *p_bake_userdata = nullptr);
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LightmapGI();
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};
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VARIANT_ENUM_CAST(LightmapGI::BakeQuality);
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VARIANT_ENUM_CAST(LightmapGI::GenerateProbes);
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VARIANT_ENUM_CAST(LightmapGI::BakeError);
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VARIANT_ENUM_CAST(LightmapGI::EnvironmentMode);
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#endif // BAKED_LIGHTMAP_H
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