mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-11-22 08:57:34 +01:00
189 lines
7.8 KiB
C++
189 lines
7.8 KiB
C++
/**************************************************************************/
|
|
/* lightmapper_cpu.h */
|
|
/**************************************************************************/
|
|
/* 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. */
|
|
/**************************************************************************/
|
|
|
|
#ifndef LIGHTMAPPER_CPU_H
|
|
#define LIGHTMAPPER_CPU_H
|
|
|
|
#include "core/containers/local_vector.h"
|
|
#include "scene/3d/lightmapper.h"
|
|
#include "scene/resources/mesh/mesh.h"
|
|
#include "scene/resources/mesh/surface_tool.h"
|
|
|
|
#include <atomic>
|
|
|
|
class LightmapperCPU : public Lightmapper {
|
|
GDCLASS(LightmapperCPU, Lightmapper)
|
|
|
|
struct MeshInstance {
|
|
MeshData data;
|
|
int slice = 0;
|
|
Vector2i offset;
|
|
Vector2i size;
|
|
bool cast_shadows;
|
|
bool generate_lightmap;
|
|
String node_name;
|
|
};
|
|
|
|
struct Light {
|
|
Vector3 position;
|
|
uint32_t type = LIGHT_TYPE_DIRECTIONAL;
|
|
Vector3 direction;
|
|
float energy;
|
|
float indirect_multiplier;
|
|
Color color;
|
|
float range;
|
|
float attenuation;
|
|
float spot_angle;
|
|
float spot_attenuation;
|
|
float size;
|
|
bool bake_direct;
|
|
};
|
|
|
|
struct LightmapTexel {
|
|
Vector3 albedo;
|
|
float alpha;
|
|
Vector3 emission;
|
|
Vector3 pos;
|
|
Vector3 normal;
|
|
|
|
Vector3 direct_light;
|
|
Vector3 output_light;
|
|
|
|
float area_coverage;
|
|
};
|
|
|
|
struct BakeParams {
|
|
float bias;
|
|
int bounces;
|
|
float bounce_indirect_energy;
|
|
int samples;
|
|
bool use_denoiser = true;
|
|
bool use_physical_light_attenuation = false;
|
|
Ref<Image> environment_panorama;
|
|
Basis environment_transform;
|
|
};
|
|
|
|
struct UVSeam {
|
|
Vector2 edge0[2];
|
|
Vector2 edge1[2];
|
|
};
|
|
|
|
struct SeamEdge {
|
|
Vector3 pos[2];
|
|
Vector3 normal[2];
|
|
Vector2 uv[2];
|
|
|
|
_FORCE_INLINE_ bool operator<(const SeamEdge &p_edge) const {
|
|
return pos[0].x < p_edge.pos[0].x;
|
|
}
|
|
};
|
|
|
|
struct AtlasOffset {
|
|
int slice;
|
|
int x;
|
|
int y;
|
|
};
|
|
|
|
struct ThreadData;
|
|
|
|
typedef void (LightmapperCPU::*BakeThreadFunc)(uint32_t, void *);
|
|
|
|
struct ThreadData {
|
|
LightmapperCPU *instance;
|
|
uint32_t count;
|
|
BakeThreadFunc thread_func;
|
|
void *userdata;
|
|
};
|
|
|
|
BakeParams parameters;
|
|
|
|
LocalVector<Ref<Image>> bake_textures;
|
|
RBMap<RID, Ref<Image>> albedo_textures;
|
|
RBMap<RID, Ref<Image>> emission_textures;
|
|
|
|
LocalVector<MeshInstance> mesh_instances;
|
|
LocalVector<Light> lights;
|
|
|
|
LocalVector<LocalVector<LightmapTexel>> scene_lightmaps;
|
|
LocalVector<LocalVector<int>> scene_lightmap_indices;
|
|
RBSet<int> no_shadow_meshes;
|
|
|
|
std::atomic<uint32_t> thread_progress;
|
|
std::atomic<bool> thread_cancelled;
|
|
|
|
Ref<LightmapRaycaster> raycaster;
|
|
|
|
Error _layout_atlas(int p_max_size, Vector2i *r_atlas_size, int *r_atlas_slices);
|
|
|
|
static void _thread_func_callback(void *p_thread_data);
|
|
void _thread_func_wrapper(uint32_t p_idx, ThreadData *p_thread_data);
|
|
bool _parallel_run(int p_count, const String &p_description, BakeThreadFunc p_thread_func, void *p_userdata, BakeStepFunc p_substep_func = nullptr);
|
|
|
|
void _generate_buffer(uint32_t p_idx, void *p_unused);
|
|
Ref<Image> _init_bake_texture(const MeshData::TextureDef &p_texture_def, const RBMap<RID, Ref<Image>> &p_tex_cache, Image::Format p_default_format);
|
|
Color _bilinear_sample(const Ref<Image> &p_img, const Vector2 &p_uv, bool p_clamp_x = false, bool p_clamp_y = false);
|
|
Vector3 _fix_sample_position(const Vector3 &p_position, const Vector3 &p_texel_center, const Vector3 &p_normal, const Vector3 &p_tangent, const Vector3 &p_bitangent, const Vector2 &p_texel_size);
|
|
void _plot_triangle(const Vector2 *p_vertices, const Vector3 *p_positions, const Vector3 *p_normals, const Vector2 *p_uvs, const Ref<Image> &p_albedo_texture, const Ref<Image> &p_emission_texture, Vector2i p_size, LocalVector<LightmapTexel> &r_texels, LocalVector<int> &r_lightmap_indices);
|
|
|
|
float _get_omni_attenuation(float distance, float inv_range, float decay) const;
|
|
|
|
void _compute_direct_light(uint32_t p_idx, void *r_lightmap);
|
|
|
|
void _compute_indirect_light(uint32_t p_idx, void *r_lightmap);
|
|
|
|
void _post_process(uint32_t p_idx, void *r_output);
|
|
void _compute_seams(const MeshInstance &p_mesh, LocalVector<UVSeam> &r_seams);
|
|
void _fix_seams(const LocalVector<UVSeam> &p_seams, Vector3 *r_lightmap, Vector2i p_size);
|
|
void _fix_seam(const Vector2 &p_pos0, const Vector2 &p_pos1, const Vector2 &p_uv0, const Vector2 &p_uv1, const Vector3 *p_read_buffer, Vector3 *r_write_buffer, const Vector2i &p_size);
|
|
void _dilate_lightmap(Vector3 *r_lightmap, const LocalVector<int> p_indices, Vector2i p_size, int margin);
|
|
|
|
void _blit_lightmap(const Vector<Vector3> &p_src, const Vector2i &p_size, Ref<Image> &p_dst, int p_x, int p_y, bool p_with_padding);
|
|
|
|
public:
|
|
virtual void add_albedo_texture(Ref<Texture> p_texture);
|
|
virtual void add_emission_texture(Ref<Texture> p_texture);
|
|
virtual void add_mesh(const MeshData &p_mesh, Vector2i p_size);
|
|
virtual void add_directional_light(bool p_bake_direct, const Vector3 &p_direction, const Color &p_color, float p_energy, float p_indirect_multiplier, float p_size);
|
|
virtual void add_omni_light(bool p_bake_direct, const Vector3 &p_position, const Color &p_color, float p_energy, float p_indirect_multiplier, float p_range, float p_attenuation, float p_size);
|
|
virtual void add_spot_light(bool p_bake_direct, const Vector3 &p_position, const Vector3 p_direction, const Color &p_color, float p_energy, float p_indirect_multiplier, float p_range, float p_attenuation, float p_spot_angle, float p_spot_attenuation, float p_size);
|
|
virtual BakeError bake(BakeQuality p_quality, bool p_use_denoiser, int p_bounces, float p_bounce_energy, float p_bias, bool p_generate_atlas, int p_max_texture_size, const Ref<Image> &p_environment_panorama, const Basis &p_environment_transform, BakeStepFunc p_step_function = nullptr, void *p_bake_userdata = nullptr, BakeStepFunc p_substep_function = nullptr);
|
|
|
|
int get_bake_texture_count() const;
|
|
Ref<Image> get_bake_texture(int p_index) const;
|
|
int get_bake_mesh_count() const;
|
|
Variant get_bake_mesh_userdata(int p_index) const;
|
|
Rect2 get_bake_mesh_uv_scale(int p_index) const;
|
|
int get_bake_mesh_texture_slice(int p_index) const;
|
|
|
|
LightmapperCPU();
|
|
};
|
|
|
|
#endif // LIGHTMAPPER_CPU_H
|