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virtualx-engine/tools/editor/plugins/baked_light_baker.cpp
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

2724 lines
62 KiB
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/*************************************************************************/
/* baked_light_baker.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 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 "baked_light_baker.h"
#include <stdlib.h>
#include <cmath>
#include "io/marshalls.h"
#include "tools/editor/editor_node.h"
#include "tools/editor/editor_settings.h"
void baked_light_baker_add_64f(double *dst,double value);
void baked_light_baker_add_64i(int64_t *dst,int64_t value);
//-separar en 2 testuras?
//*mejorar performance y threads
//*modos lineales
//*saturacion
_FORCE_INLINE_ static uint64_t get_uv_normal_bit(const Vector3& p_vector) {
int lat = Math::fast_ftoi(Math::floor(Math::acos(p_vector.dot(Vector3(0,1,0)))*6.0/Math_PI+0.5));
if (lat==0) {
return 60;
} else if (lat==6) {
return 61;
}
int lon = Math::fast_ftoi(Math::floor( (Math_PI+Math::atan2(p_vector.x,p_vector.z))*12.0/(Math_PI*2.0) + 0.5))%12;
return lon+(lat-1)*12;
}
_FORCE_INLINE_ static Vector3 get_bit_normal(int p_bit) {
if (p_bit==61) {
return Vector3(0,1,0);
} else if (p_bit==62){
return Vector3(0,-1,0);
}
float latang = ((p_bit / 12)+1)*Math_PI/6.0;
Vector2 latv(Math::sin(latang),Math::cos(latang));
float lonang = ((p_bit%12)*Math_PI*2.0/12.0)-Math_PI;
Vector2 lonv(Math::sin(lonang),Math::cos(lonang));
return Vector3(lonv.x*latv.x,latv.y,lonv.y*latv.x).normalized();
}
BakedLightBaker::MeshTexture* BakedLightBaker::_get_mat_tex(const Ref<Texture>& p_tex) {
if (!tex_map.has(p_tex)) {
Ref<ImageTexture> imgtex=p_tex;
if (imgtex.is_null())
return NULL;
Image image=imgtex->get_data();
if (image.empty())
return NULL;
if (image.get_format()!=Image::FORMAT_RGBA) {
if (image.get_format()>Image::FORMAT_INDEXED_ALPHA) {
Error err = image.decompress();
if (err)
return NULL;
}
if (image.get_format()!=Image::FORMAT_RGBA)
image.convert(Image::FORMAT_RGBA);
}
if (imgtex->get_flags()&Texture::FLAG_CONVERT_TO_LINEAR) {
Image copy = image;
copy.srgb_to_linear();
image=copy;
}
DVector<uint8_t> dvt=image.get_data();
DVector<uint8_t>::Read r=dvt.read();
MeshTexture mt;
mt.tex_w=image.get_width();
mt.tex_h=image.get_height();
int len = image.get_width()*image.get_height()*4;
mt.tex.resize(len);
copymem(mt.tex.ptr(),r.ptr(),len);
textures.push_back(mt);
tex_map[p_tex]=&textures.back()->get();
}
return tex_map[p_tex];
}
void BakedLightBaker::_add_mesh(const Ref<Mesh>& p_mesh,const Ref<Material>& p_mat_override,const Transform& p_xform,int p_baked_texture) {
for(int i=0;i<p_mesh->get_surface_count();i++) {
if (p_mesh->surface_get_primitive_type(i)!=Mesh::PRIMITIVE_TRIANGLES)
continue;
Ref<Material> mat = p_mat_override.is_valid()?p_mat_override:p_mesh->surface_get_material(i);
MeshMaterial *matptr=NULL;
int baked_tex=p_baked_texture;
if (mat.is_valid()) {
if (!mat_map.has(mat)) {
MeshMaterial mm;
Ref<FixedMaterial> fm = mat;
if (fm.is_valid()) {
//fixed route
mm.diffuse.color=fm->get_parameter(FixedMaterial::PARAM_DIFFUSE);
if (linear_color)
mm.diffuse.color=mm.diffuse.color.to_linear();
mm.diffuse.tex=_get_mat_tex(fm->get_texture(FixedMaterial::PARAM_DIFFUSE));
mm.specular.color=fm->get_parameter(FixedMaterial::PARAM_SPECULAR);
if (linear_color)
mm.specular.color=mm.specular.color.to_linear();
mm.specular.tex=_get_mat_tex(fm->get_texture(FixedMaterial::PARAM_SPECULAR));
} else {
mm.diffuse.color=Color(1,1,1,1);
mm.diffuse.tex=NULL;
mm.specular.color=Color(0,0,0,1);
mm.specular.tex=NULL;
}
materials.push_back(mm);
mat_map[mat]=&materials.back()->get();
}
matptr=mat_map[mat];
}
int facecount=0;
if (p_mesh->surface_get_format(i)&Mesh::ARRAY_FORMAT_INDEX) {
facecount=p_mesh->surface_get_array_index_len(i);
} else {
facecount=p_mesh->surface_get_array_len(i);
}
ERR_CONTINUE((facecount==0 || (facecount%3)!=0));
facecount/=3;
int tbase=triangles.size();
triangles.resize(facecount+tbase);
Array a = p_mesh->surface_get_arrays(i);
DVector<Vector3> vertices = a[Mesh::ARRAY_VERTEX];
DVector<Vector3>::Read vr=vertices.read();
DVector<Vector2> uv;
DVector<Vector2>::Read uvr;
DVector<Vector2> uv2;
DVector<Vector2>::Read uv2r;
DVector<Vector3> normal;
DVector<Vector3>::Read normalr;
bool read_uv=false;
bool read_normal=false;
if (p_mesh->surface_get_format(i)&Mesh::ARRAY_FORMAT_TEX_UV) {
uv=a[Mesh::ARRAY_TEX_UV];
uvr=uv.read();
read_uv=true;
if (mat.is_valid() && mat->get_flag(Material::FLAG_LIGHTMAP_ON_UV2) && p_mesh->surface_get_format(i)&Mesh::ARRAY_FORMAT_TEX_UV2) {
uv2=a[Mesh::ARRAY_TEX_UV2];
uv2r=uv2.read();
} else {
uv2r=uv.read();
if (baked_light->get_transfer_lightmaps_only_to_uv2()) {
baked_tex=-1;
}
}
}
if (p_mesh->surface_get_format(i)&Mesh::ARRAY_FORMAT_NORMAL) {
normal=a[Mesh::ARRAY_NORMAL];
normalr=normal.read();
read_normal=true;
}
Matrix3 normal_xform = p_xform.basis.inverse().transposed();
if (p_mesh->surface_get_format(i)&Mesh::ARRAY_FORMAT_INDEX) {
DVector<int> indices = a[Mesh::ARRAY_INDEX];
DVector<int>::Read ir = indices.read();
for(int i=0;i<facecount;i++) {
Triangle &t=triangles[tbase+i];
t.vertices[0]=p_xform.xform(vr[ ir[i*3+0] ]);
t.vertices[1]=p_xform.xform(vr[ ir[i*3+1] ]);
t.vertices[2]=p_xform.xform(vr[ ir[i*3+2] ]);
t.material=matptr;
t.baked_texture=baked_tex;
if (read_uv) {
t.uvs[0]=uvr[ ir[i*3+0] ];
t.uvs[1]=uvr[ ir[i*3+1] ];
t.uvs[2]=uvr[ ir[i*3+2] ];
t.bake_uvs[0]=uv2r[ ir[i*3+0] ];
t.bake_uvs[1]=uv2r[ ir[i*3+1] ];
t.bake_uvs[2]=uv2r[ ir[i*3+2] ];
}
if (read_normal) {
t.normals[0]=normal_xform.xform(normalr[ ir[i*3+0] ]).normalized();
t.normals[1]=normal_xform.xform(normalr[ ir[i*3+1] ]).normalized();
t.normals[2]=normal_xform.xform(normalr[ ir[i*3+2] ]).normalized();
}
}
} else {
for(int i=0;i<facecount;i++) {
Triangle &t=triangles[tbase+i];
t.vertices[0]=p_xform.xform(vr[ i*3+0 ]);
t.vertices[1]=p_xform.xform(vr[ i*3+1 ]);
t.vertices[2]=p_xform.xform(vr[ i*3+2 ]);
t.material=matptr;
t.baked_texture=baked_tex;
if (read_uv) {
t.uvs[0]=uvr[ i*3+0 ];
t.uvs[1]=uvr[ i*3+1 ];
t.uvs[2]=uvr[ i*3+2 ];
t.bake_uvs[0]=uv2r[ i*3+0 ];
t.bake_uvs[1]=uv2r[ i*3+1 ];
t.bake_uvs[2]=uv2r[ i*3+2 ];
}
if (read_normal) {
t.normals[0]=normal_xform.xform(normalr[ i*3+0 ]).normalized();
t.normals[1]=normal_xform.xform(normalr[ i*3+1 ]).normalized();
t.normals[2]=normal_xform.xform(normalr[ i*3+2 ]).normalized();
}
}
}
}
}
void BakedLightBaker::_parse_geometry(Node* p_node) {
if (p_node->cast_to<MeshInstance>()) {
MeshInstance *meshi=p_node->cast_to<MeshInstance>();
Ref<Mesh> mesh=meshi->get_mesh();
if (mesh.is_valid()) {
_add_mesh(mesh,meshi->get_material_override(),base_inv * meshi->get_global_transform(),meshi->get_baked_light_texture_id());
}
} else if (p_node->cast_to<Light>()) {
Light *dl=p_node->cast_to<Light>();
if (dl->get_bake_mode()!=Light::BAKE_MODE_DISABLED) {
LightData dirl;
dirl.type=VS::LightType(dl->get_light_type());
dirl.diffuse=dl->get_color(DirectionalLight::COLOR_DIFFUSE);
dirl.specular=dl->get_color(DirectionalLight::COLOR_SPECULAR);
if (linear_color)
dirl.diffuse=dirl.diffuse.to_linear();
if (linear_color)
dirl.specular=dirl.specular.to_linear();
dirl.energy=dl->get_parameter(DirectionalLight::PARAM_ENERGY);
dirl.pos=dl->get_global_transform().origin;
dirl.up=dl->get_global_transform().basis.get_axis(1).normalized();
dirl.left=dl->get_global_transform().basis.get_axis(0).normalized();
dirl.dir=-dl->get_global_transform().basis.get_axis(2).normalized();
dirl.spot_angle=dl->get_parameter(DirectionalLight::PARAM_SPOT_ANGLE);
dirl.spot_attenuation=dl->get_parameter(DirectionalLight::PARAM_SPOT_ATTENUATION);
dirl.attenuation=dl->get_parameter(DirectionalLight::PARAM_ATTENUATION);
dirl.darkening=dl->get_parameter(DirectionalLight::PARAM_SHADOW_DARKENING);
dirl.radius=dl->get_parameter(DirectionalLight::PARAM_RADIUS);
dirl.bake_direct=dl->get_bake_mode()==Light::BAKE_MODE_FULL;
dirl.rays_thrown=0;
dirl.bake_shadow=dl->get_bake_mode()==Light::BAKE_MODE_INDIRECT_AND_SHADOWS;
lights.push_back(dirl);
}
} else if (p_node->cast_to<Spatial>()){
Spatial *sp = p_node->cast_to<Spatial>();
Array arr = p_node->call("_get_baked_light_meshes");
for(int i=0;i<arr.size();i+=2) {
Transform xform=arr[i];
Ref<Mesh> mesh=arr[i+1];
_add_mesh(mesh,Ref<Material>(),base_inv * (sp->get_global_transform() * xform));
}
}
for(int i=0;i<p_node->get_child_count();i++) {
_parse_geometry(p_node->get_child(i));
}
}
void BakedLightBaker::_fix_lights() {
total_light_area=0;
for(int i=0;i<lights.size();i++) {
LightData &dl=lights[i];
switch(dl.type) {
case VS::LIGHT_DIRECTIONAL: {
float up_max=-1e10;
float dir_max=-1e10;
float left_max=-1e10;
float up_min=1e10;
float dir_min=1e10;
float left_min=1e10;
for(int j=0;j<triangles.size();j++) {
for(int k=0;k<3;k++) {
Vector3 v = triangles[j].vertices[k];
float up_d = dl.up.dot(v);
float dir_d = dl.dir.dot(v);
float left_d = dl.left.dot(v);
if (up_d>up_max)
up_max=up_d;
if (up_d<up_min)
up_min=up_d;
if (left_d>left_max)
left_max=left_d;
if (left_d<left_min)
left_min=left_d;
if (dir_d>dir_max)
dir_max=dir_d;
if (dir_d<dir_min)
dir_min=dir_d;
}
}
//make a center point, then the upvector and leftvector
dl.pos = dl.left*( left_max+left_min )*0.5 + dl.up*( up_max+up_min )*0.5 + dl.dir*(dir_min-(dir_max-dir_min));
dl.left*=(left_max-left_min)*0.5;
dl.up*=(up_max-up_min)*0.5;
dl.length = (dir_max - dir_min)*10; //arbitrary number to keep it in scale
dl.area=dl.left.length()*2*dl.up.length()*2;
dl.constant=1.0/dl.area;
} break;
case VS::LIGHT_OMNI:
case VS::LIGHT_SPOT: {
dl.attenuation_table.resize(ATTENUATION_CURVE_LEN);
for(int j=0;j<ATTENUATION_CURVE_LEN;j++) {
dl.attenuation_table[j]=1.0-Math::pow(j/float(ATTENUATION_CURVE_LEN),dl.attenuation);
float falloff=j*dl.radius/float(ATTENUATION_CURVE_LEN);
if (falloff==0)
falloff=0.000001;
float intensity=4*Math_PI*(falloff*falloff);
//dl.attenuation_table[j]*=falloff*falloff;
dl.attenuation_table[j]*=1.0/(3.0/intensity);
}
if (dl.type==VS::LIGHT_OMNI) {
dl.area=4.0*Math_PI*pow(dl.radius,2.0f);
dl.constant=1.0/3.5;
} else {
float r = Math::tan(Math::deg2rad(dl.spot_angle))*dl.radius;
float c = 1.0-(Math::deg2rad(dl.spot_angle)*0.5+0.5);
dl.constant=1.0/3.5;
dl.constant*=1.0/c;
dl.area=Math_PI*r*r*c;
}
} break;
}
total_light_area+=dl.area;
}
}
BakedLightBaker::BVH* BakedLightBaker::_parse_bvh(BVH** p_children, int p_size, int p_depth, int &max_depth) {
if (p_depth>max_depth) {
max_depth=p_depth;
}
if (p_size==1) {
return p_children[0];
} else if (p_size==0) {
return NULL;
}
AABB aabb;
aabb=p_children[0]->aabb;
for(int i=1;i<p_size;i++) {
aabb.merge_with(p_children[i]->aabb);
}
int li=aabb.get_longest_axis_index();
switch(li) {
case Vector3::AXIS_X: {
SortArray<BVH*,BVHCmpX> sort_x;
sort_x.nth_element(0,p_size,p_size/2,p_children);
//sort_x.sort(&p_bb[p_from],p_size);
} break;
case Vector3::AXIS_Y: {
SortArray<BVH*,BVHCmpY> sort_y;
sort_y.nth_element(0,p_size,p_size/2,p_children);
//sort_y.sort(&p_bb[p_from],p_size);
} break;
case Vector3::AXIS_Z: {
SortArray<BVH*,BVHCmpZ> sort_z;
sort_z.nth_element(0,p_size,p_size/2,p_children);
//sort_z.sort(&p_bb[p_from],p_size);
} break;
}
BVH* left = _parse_bvh(p_children,p_size/2,p_depth+1,max_depth);
BVH* right = _parse_bvh(&p_children[p_size/2],p_size-p_size/2,p_depth+1,max_depth);
BVH *_new = memnew(BVH);
_new->aabb=aabb;
_new->center=aabb.pos+aabb.size*0.5;
_new->children[0]=left;
_new->children[1]=right;
_new->leaf=NULL;
return _new;
}
void BakedLightBaker::_make_bvh() {
Vector<BVH*> bases;
bases.resize(triangles.size());
int max_depth=0;
for(int i=0;i<triangles.size();i++) {
bases[i]=memnew( BVH );
bases[i]->leaf=&triangles[i];
bases[i]->aabb.pos=triangles[i].vertices[0];
bases[i]->aabb.expand_to(triangles[i].vertices[1]);
bases[i]->aabb.expand_to(triangles[i].vertices[2]);
triangles[i].aabb=bases[i]->aabb;
bases[i]->center=bases[i]->aabb.pos+bases[i]->aabb.size*0.5;
}
bvh=_parse_bvh(bases.ptr(),bases.size(),1,max_depth);
ray_stack = memnew_arr(uint32_t,max_depth);
bvh_stack = memnew_arr(BVH*,max_depth);
bvh_depth = max_depth;
}
void BakedLightBaker::_octree_insert(int p_octant,Triangle* p_triangle, int p_depth) {
uint32_t *stack=octant_stack;
uint32_t *ptr_stack=octantptr_stack;
Octant *octants=octant_pool.ptr();
stack[0]=0;
ptr_stack[0]=0;
int stack_pos=0;
while(true) {
Octant *octant=&octants[ptr_stack[stack_pos]];
if (stack[stack_pos]<8) {
int i = stack[stack_pos];
stack[stack_pos]++;
//fit_aabb=fit_aabb.grow(bvh->aabb.size.x*0.0001);
int child_idx =octant->children[i];
bool encloses;
if (!child_idx) {
AABB aabb=octant->aabb;
aabb.size*=0.5;
if (i&1)
aabb.pos.x+=aabb.size.x;
if (i&2)
aabb.pos.y+=aabb.size.y;
if (i&4)
aabb.pos.z+=aabb.size.z;
aabb.grow_by(cell_size*octree_extra_margin);
if (!aabb.intersects(p_triangle->aabb))
continue;
encloses=aabb.grow(cell_size*-octree_extra_margin*2.0).encloses(p_triangle->aabb);
if (!encloses && !Face3(p_triangle->vertices[0],p_triangle->vertices[1],p_triangle->vertices[2]).intersects_aabb2(aabb))
continue;
} else {
Octant *child=&octants[child_idx];
AABB aabb=child->aabb;
aabb.grow_by(cell_size*octree_extra_margin);
if (!aabb.intersects(p_triangle->aabb))
continue;
encloses=aabb.grow(cell_size*-octree_extra_margin*2.0).encloses(p_triangle->aabb);
if (!encloses && !Face3(p_triangle->vertices[0],p_triangle->vertices[1],p_triangle->vertices[2]).intersects_aabb2(aabb))
continue;
}
if (encloses)
stack[stack_pos]=8; // quick and dirty opt
if (!child_idx) {
if (octant_pool_size==octant_pool.size()) {
octant_pool.resize(octant_pool_size+OCTANT_POOL_CHUNK);
octants=octant_pool.ptr();
octant=&octants[ptr_stack[stack_pos]];
}
child_idx=octant_pool_size++;
octant->children[i]=child_idx;
Octant *child=&octants[child_idx];
child->aabb=octant->aabb;
child->texture_x=0;
child->texture_y=0;
child->aabb.size*=0.5;
if (i&1)
child->aabb.pos.x+=child->aabb.size.x;
if (i&2)
child->aabb.pos.y+=child->aabb.size.y;
if (i&4)
child->aabb.pos.z+=child->aabb.size.z;
child->full_accum[0]=0;
child->full_accum[1]=0;
child->full_accum[2]=0;
child->sampler_ofs=0;
if (stack_pos==octree_depth-1) {
child->leaf=true;
child->offset[0]=child->aabb.pos.x+child->aabb.size.x*0.5;
child->offset[1]=child->aabb.pos.y+child->aabb.size.y*0.5;
child->offset[2]=child->aabb.pos.z+child->aabb.size.z*0.5;
child->next_leaf=leaf_list;
for(int ci=0;ci<8;ci++) {
child->normal_accum[ci][0]=0;
child->normal_accum[ci][1]=0;
child->normal_accum[ci][2]=0;
}
child->bake_neighbour=0;
child->first_neighbour=true;
leaf_list=child_idx;
cell_count++;
for(int ci=0;ci<8;ci++) {
child->light_accum[ci][0]=0;
child->light_accum[ci][1]=0;
child->light_accum[ci][2]=0;
}
child->parent=ptr_stack[stack_pos];
} else {
child->leaf=false;
for(int j=0;j<8;j++) {
child->children[j]=0;
}
}
}
if (!octants[child_idx].leaf) {
stack_pos++;
stack[stack_pos]=0;
ptr_stack[stack_pos]=child_idx;
} else {
Octant *child=&octants[child_idx];
Vector3 n = Plane(p_triangle->vertices[0],p_triangle->vertices[1],p_triangle->vertices[2]).normal;
for(int ci=0;ci<8;ci++) {
Vector3 pos = child->aabb.pos;
if (ci&1)
pos.x+=child->aabb.size.x;
if (ci&2)
pos.y+=child->aabb.size.y;
if (ci&4)
pos.z+=child->aabb.size.z;
pos.x=floor((pos.x+cell_size*0.5)/cell_size);
pos.y=floor((pos.y+cell_size*0.5)/cell_size);
pos.z=floor((pos.z+cell_size*0.5)/cell_size);
{
Map<Vector3,Vector3>::Element *E=endpoint_normal.find(pos);
if (!E) {
endpoint_normal[pos]=n;
} else {
E->get()+=n;
}
}
{
uint64_t bit = get_uv_normal_bit(n);
Map<Vector3,uint64_t>::Element *E=endpoint_normal_bits.find(pos);
if (!E) {
endpoint_normal_bits[pos]=(1<<bit);
} else {
E->get()|=(1<<bit);
}
}
}
}
} else {
stack_pos--;
if (stack_pos<0)
break;
}
}
}
void BakedLightBaker::_make_octree() {
AABB base = bvh->aabb;
float lal=base.get_longest_axis_size();
//must be square because we want square blocks
base.size.x=lal;
base.size.y=lal;
base.size.z=lal;
base.grow_by(lal*0.001); //for precision
octree_aabb=base;
cell_size=base.size.x;
for(int i=0;i<octree_depth;i++)
cell_size/=2.0;
octant_stack = memnew_arr(uint32_t,octree_depth*2 );
octantptr_stack = memnew_arr(uint32_t,octree_depth*2 );
octant_pool.resize(OCTANT_POOL_CHUNK);
octant_pool_size=1;
Octant *root=octant_pool.ptr();
root->leaf=false;
root->aabb=octree_aabb;
root->parent=-1;
for(int i=0;i<8;i++)
root->children[i]=0;
EditorProgress ep("bake_octree",vformat(TTR("Parsing %d Triangles:"), triangles.size()),triangles.size());
for(int i=0;i<triangles.size();i++) {
_octree_insert(0,&triangles[i],octree_depth-1);
if ((i%1000)==0) {
ep.step(TTR("Triangle #")+itos(i),i);
}
}
{
uint32_t oct_idx=leaf_list;
Octant *octants=octant_pool.ptr();
while(oct_idx) {
BakedLightBaker::Octant *oct = &octants[oct_idx];
for(int ci=0;ci<8;ci++) {
Vector3 pos = oct->aabb.pos;
if (ci&1)
pos.x+=oct->aabb.size.x;
if (ci&2)
pos.y+=oct->aabb.size.y;
if (ci&4)
pos.z+=oct->aabb.size.z;
pos.x=floor((pos.x+cell_size*0.5)/cell_size);
pos.y=floor((pos.y+cell_size*0.5)/cell_size);
pos.z=floor((pos.z+cell_size*0.5)/cell_size);
{
Map<Vector3,Vector3>::Element *E=endpoint_normal.find(pos);
if (!E) {
//?
print_line("lolwut?");
} else {
Vector3 n = E->get().normalized();
oct->normal_accum[ci][0]=n.x;
oct->normal_accum[ci][1]=n.y;
oct->normal_accum[ci][2]=n.z;
}
}
{
Map<Vector3,uint64_t>::Element *E=endpoint_normal_bits.find(pos);
if (!E) {
//?
print_line("lolwut?");
} else {
float max_aper=0;
for(uint64_t i=0;i<62;i++) {
if (!(E->get()&(1<<i)))
continue;
Vector3 ang_i = get_bit_normal(i);
for(uint64_t j=0;j<62;j++) {
if (i==j)
continue;
if (!(E->get()&(1<<j)))
continue;
Vector3 ang_j = get_bit_normal(j);
float ang = Math::acos(ang_i.dot(ang_j));
if (ang>max_aper)
max_aper=ang;
}
}
if (max_aper>0.75*Math_PI) {
//angle too wide prevent problems and forget
oct->normal_accum[ci][0]=0;
oct->normal_accum[ci][1]=0;
oct->normal_accum[ci][2]=0;
}
}
}
}
oct_idx=oct->next_leaf;
}
}
}
void BakedLightBaker::_plot_light(ThreadStack& thread_stack,const Vector3& p_plot_pos, const AABB& p_plot_aabb, const Color& p_light,const Color& p_tint_light,bool p_only_full, const Plane& p_plane) {
//stackless version
uint32_t *stack=thread_stack.octant_stack;
uint32_t *ptr_stack=thread_stack.octantptr_stack;
Octant *octants=octant_pool.ptr();
stack[0]=0;
ptr_stack[0]=0;
int stack_pos=0;
while(true) {
Octant &octant=octants[ptr_stack[stack_pos]];
if (stack[stack_pos]==0) {
Vector3 pos = octant.aabb.pos + octant.aabb.size*0.5;
float md = 1<<(octree_depth - stack_pos );
float r=cell_size*plot_size*md;
float div = 1.0/(md*md*md);
//div=1.0;
float d = p_plot_pos.distance_to(pos);
if ((p_plane.distance_to(pos)>-cell_size*1.75*md) && d<=r) {
float intensity = 1.0 - (d/r)*(d/r); //not gauss but..
baked_light_baker_add_64f(&octant.full_accum[0],p_tint_light.r*intensity*div);
baked_light_baker_add_64f(&octant.full_accum[1],p_tint_light.g*intensity*div);
baked_light_baker_add_64f(&octant.full_accum[2],p_tint_light.b*intensity*div);
}
}
if (octant.leaf) {
//if (p_plane.normal.dot(octant.aabb.get_support(p_plane.normal)) < p_plane.d-CMP_EPSILON) { //octants behind are no go
if (!p_only_full) {
float r=cell_size*plot_size;
for(int i=0;i<8;i++) {
Vector3 pos=octant.aabb.pos;
if (i&1)
pos.x+=octant.aabb.size.x;
if (i&2)
pos.y+=octant.aabb.size.y;
if (i&4)
pos.z+=octant.aabb.size.z;
float d = p_plot_pos.distance_to(pos);
if ((p_plane.distance_to(pos)>-cell_size*1.75) && d<=r) {
float intensity = 1.0 - (d/r)*(d/r); //not gauss but..
if (edge_damp>0) {
Vector3 normal = Vector3(octant.normal_accum[i][0],octant.normal_accum[i][1],octant.normal_accum[i][2]);
if (normal.x>0 || normal.y>0 || normal.z>0) {
float damp = Math::abs(p_plane.normal.dot(normal));
intensity*=pow(damp,edge_damp);
}
}
//intensity*=1.0-Math::abs(p_plane.distance_to(pos))/(plot_size*cell_size);
//intensity = Math::cos(d*Math_PI*0.5/r);
baked_light_baker_add_64f(&octant.light_accum[i][0],p_light.r*intensity);
baked_light_baker_add_64f(&octant.light_accum[i][1],p_light.g*intensity);
baked_light_baker_add_64f(&octant.light_accum[i][2],p_light.b*intensity);
}
}
}
stack_pos--;
} else if (stack[stack_pos]<8) {
int i = stack[stack_pos];
stack[stack_pos]++;
if (!octant.children[i]) {
continue;
}
Octant &child=octants[octant.children[i]];
if (!child.aabb.intersects(p_plot_aabb))
continue;
if (child.aabb.encloses(p_plot_aabb)) {
stack[stack_pos]=8; //don't test the rest
}
stack_pos++;
stack[stack_pos]=0;
ptr_stack[stack_pos]=octant.children[i];
} else {
stack_pos--;
if (stack_pos<0)
break;
}
}
}
float BakedLightBaker::_throw_ray(ThreadStack& thread_stack,bool p_bake_direct,const Vector3& p_begin, const Vector3& p_end,float p_rest,const Color& p_light,float *p_att_curve,float p_att_pos,int p_att_curve_len,int p_bounces,bool p_first_bounce,bool p_only_dist) {
uint32_t* stack = thread_stack.ray_stack;
BVH **bstack = thread_stack.bvh_stack;
enum {
TEST_AABB_BIT=0,
VISIT_LEFT_BIT=1,
VISIT_RIGHT_BIT=2,
VISIT_DONE_BIT=3,
};
Vector3 n = (p_end-p_begin);
float len=n.length();
if (len==0)
return 0;
n/=len;
real_t d=1e10;
bool inters=false;
Vector3 r_normal;
Vector3 r_point;
Vector3 end=p_end;
Triangle *triangle=NULL;
//for(int i=0;i<max_depth;i++)
// stack[i]=0;
int level=0;
//AABB ray_aabb;
//ray_aabb.pos=p_begin;
//ray_aabb.expand_to(p_end);
bstack[0]=bvh;
stack[0]=TEST_AABB_BIT;
while(true) {
uint32_t mode = stack[level];
const BVH &b = *bstack[level];
bool done=false;
switch(mode) {
case TEST_AABB_BIT: {
if (b.leaf) {
Face3 f3(b.leaf->vertices[0],b.leaf->vertices[1],b.leaf->vertices[2]);
Vector3 res;
if (f3.intersects_segment(p_begin,end,&res)) {
float nd = n.dot(res);
if (nd<d) {
d=nd;
r_point=res;
end=res;
len=(p_begin-end).length();
r_normal=f3.get_plane().get_normal();
triangle=b.leaf;
inters=true;
}
}
stack[level]=VISIT_DONE_BIT;
} else {
bool valid = b.aabb.smits_intersect_ray(p_begin,n,0,len);
//bool valid = b.aabb.intersects_segment(p_begin,p_end);
// bool valid = b.aabb.intersects(ray_aabb);
if (!valid) {
stack[level]=VISIT_DONE_BIT;
} else {
stack[level]=VISIT_LEFT_BIT;
}
}
} continue;
case VISIT_LEFT_BIT: {
stack[level]=VISIT_RIGHT_BIT;
bstack[level+1]=b.children[0];
stack[level+1]=TEST_AABB_BIT;
level++;
} continue;
case VISIT_RIGHT_BIT: {
stack[level]=VISIT_DONE_BIT;
bstack[level+1]=b.children[1];
stack[level+1]=TEST_AABB_BIT;
level++;
} continue;
case VISIT_DONE_BIT: {
if (level==0) {
done=true;
break;
} else
level--;
} continue;
}
if (done)
break;
}
if (inters) {
if (p_only_dist) {
return p_begin.distance_to(r_point);
}
//should check if there is normals first
Vector2 uv;
if (true) {
triangle->get_uv_and_normal(r_point,uv,r_normal);
} else {
}
if (n.dot(r_normal)>0)
return -1;
if (n.dot(r_normal)>0)
r_normal=-r_normal;
//ok...
Color diffuse_at_point(0.8,0.8,0.8);
Color specular_at_point(0.0,0.0,0.0);
float dist = p_begin.distance_to(r_point);
AABB aabb;
aabb.pos=r_point;
aabb.pos-=Vector3(1,1,1)*cell_size*plot_size;
aabb.size=Vector3(2,2,2)*cell_size*plot_size;
Color res_light=p_light;
float att=1.0;
float dp=(1.0-normal_damp)*n.dot(-r_normal)+normal_damp;
if (p_att_curve) {
p_att_pos+=dist;
int cpos = Math::fast_ftoi((p_att_pos/p_att_curve_len)*ATTENUATION_CURVE_LEN);
cpos=CLAMP(cpos,0,ATTENUATION_CURVE_LEN-1);
att=p_att_curve[cpos];
}
res_light.r*=dp;
res_light.g*=dp;
res_light.b*=dp;
//light is plotted before multiplication with diffuse, this way
//the multiplication can happen with more detail in the shader
if (triangle->material) {
//triangle->get_uv(r_point);
diffuse_at_point=triangle->material->diffuse.get_color(uv);
specular_at_point=triangle->material->specular.get_color(uv);
}
diffuse_at_point.r=res_light.r*diffuse_at_point.r;
diffuse_at_point.g=res_light.g*diffuse_at_point.g;
diffuse_at_point.b=res_light.b*diffuse_at_point.b;
float ret=1e6;
if (p_bounces>0) {
p_rest-=dist;
if (p_rest<CMP_EPSILON)
return 0;
if (r_normal==-n)
return 0; //todo change a little
r_point+=r_normal*0.01;
specular_at_point.r=res_light.r*specular_at_point.r;
specular_at_point.g=res_light.g*specular_at_point.g;
specular_at_point.b=res_light.b*specular_at_point.b;
if (use_diffuse && (diffuse_at_point.r>CMP_EPSILON || diffuse_at_point.g>CMP_EPSILON || diffuse_at_point.b>CMP_EPSILON)) {
//diffuse bounce
Vector3 c1=r_normal.cross(n).normalized();
Vector3 c2=r_normal.cross(c1).normalized();
double r1 = double(rand())/RAND_MAX;
double r2 = double(rand())/RAND_MAX;
double r3 = double(rand())/RAND_MAX;
#if 0
Vector3 next = - ((c1*(r1-0.5)) + (c2*(r2-0.5)) + (r_normal*(r3-0.5))).normalized()*0.5 + r_normal*0.5;
if (next==Vector3())
next=r_normal;
Vector3 rn=next.normalized();
#else
Vector3 rn = ((c1*(r1-0.5)) + (c2*(r2-0.5)) + (r_normal*r3*0.5)).normalized();
#endif
ret=_throw_ray(thread_stack,p_bake_direct,r_point,r_point+rn*p_rest,p_rest,diffuse_at_point,p_att_curve,p_att_pos,p_att_curve_len,p_bounces-1);
}
if (use_specular && (specular_at_point.r>CMP_EPSILON || specular_at_point.g>CMP_EPSILON || specular_at_point.b>CMP_EPSILON)) {
//specular bounce
//Vector3 c1=r_normal.cross(n).normalized();
//Vector3 c2=r_normal.cross(c1).normalized();
Vector3 rn = n - r_normal *r_normal.dot(n) * 2.0;
_throw_ray(thread_stack,p_bake_direct,r_point,r_point+rn*p_rest,p_rest,specular_at_point,p_att_curve,p_att_pos,p_att_curve_len,p_bounces-1);
}
}
//specular later
// _plot_light_point(r_point,octree,octree_aabb,p_light);
Color plot_light=res_light.linear_interpolate(diffuse_at_point,tint);
plot_light.r*=att;
plot_light.g*=att;
plot_light.b*=att;
Color tint_light=diffuse_at_point;
tint_light.r*=att;
tint_light.g*=att;
tint_light.b*=att;
bool skip=false;
if (!p_first_bounce || p_bake_direct) {
float r = plot_size * cell_size*2;
if (dist<r) {
//avoid accumulaiton of light on corners
//plot_light=plot_light.linear_interpolate(Color(0,0,0,0),1.0-sd/plot_size*plot_size);
skip=true;
} else {
Vector3 c1=r_normal.cross(n).normalized();
Vector3 c2=r_normal.cross(c1).normalized();
double r1 = double(rand())/RAND_MAX;
double r2 = double(rand())/RAND_MAX;
double r3 = double(rand())/RAND_MAX;
Vector3 rn = ((c1*(r1-0.5)) + (c2*(r2-0.5)) + (r_normal*r3*0.25)).normalized();
float d =_throw_ray(thread_stack,p_bake_direct,r_point,r_point+rn*p_rest,p_rest,diffuse_at_point,p_att_curve,p_att_pos,p_att_curve_len,p_bounces-1,false,true);
r = plot_size*cell_size*ao_radius;
if (d>0 && d<r) {
//avoid accumulaiton of light on corners
//plot_light=plot_light.linear_interpolate(Color(0,0,0,0),1.0-sd/plot_size*plot_size);
skip=true;
} else {
//plot_light=Color(0,0,0,0);
}
}
}
Plane plane(r_point,r_normal);
if (!skip)
_plot_light(thread_stack,r_point,aabb,plot_light,tint_light,!(!p_first_bounce || p_bake_direct),plane);
return dist;
}
return -1;
}
void BakedLightBaker::_make_octree_texture() {
BakedLightBaker::Octant *octants=octant_pool.ptr();
//find neighbours first, to have a better idea of what amount of space is needed
{
Vector<OctantHash> octant_hashing;
octant_hashing.resize(octant_pool_size);
Vector<uint32_t> hash_table;
int hash_table_size=Math::larger_prime(16384);
hash_table.resize(hash_table_size);
uint32_t*hashptr = hash_table.ptr();
OctantHash*octhashptr = octant_hashing.ptr();
for(int i=0;i<hash_table_size;i++)
hashptr[i]=0;
//step 1 add to hash table
uint32_t oct_idx=leaf_list;
while(oct_idx) {
BakedLightBaker::Octant *oct = &octants[oct_idx];
uint64_t base=0;
Vector3 pos = oct->aabb.pos - octree_aabb.pos; //make sure is always positive
base=int((pos.x+cell_size*0.5)/cell_size);
base<<=16;
base|=int((pos.y+cell_size*0.5)/cell_size);
base<<=16;
base|=int((pos.z+cell_size*0.5)/cell_size);
uint32_t hash = HashMapHahserDefault::hash(base);
uint32_t idx = hash % hash_table_size;
octhashptr[oct_idx].next=hashptr[idx];
octhashptr[oct_idx].hash=hash;
octhashptr[oct_idx].value=base;
hashptr[idx]=oct_idx;
oct_idx=oct->next_leaf;
}
//step 2 find neighbours
oct_idx=leaf_list;
int neighbours=0;
while(oct_idx) {
BakedLightBaker::Octant *oct = &octants[oct_idx];
Vector3 pos = oct->aabb.pos - octree_aabb.pos; //make sure is always positive
pos.x+=cell_size;
uint64_t base=0;
base=int((pos.x+cell_size*0.5)/cell_size);
base<<=16;
base|=int((pos.y+cell_size*0.5)/cell_size);
base<<=16;
base|=int((pos.z+cell_size*0.5)/cell_size);
uint32_t hash = HashMapHahserDefault::hash(base);
uint32_t idx = hash % hash_table_size;
uint32_t bucket = hashptr[idx];
while(bucket) {
if (octhashptr[bucket].value==base) {
oct->bake_neighbour=bucket;
octants[bucket].first_neighbour=false;
neighbours++;
break;
}
bucket = octhashptr[bucket].next;
}
oct_idx=oct->next_leaf;
}
print_line("octant with neighbour: "+itos(neighbours));
}
//ok let's try to just create a texture
int otex_w=256;
while (true) {
uint32_t oct_idx=leaf_list;
int row=0;
print_line("begin at row "+itos(row));
int longest_line_reused=0;
int col=0;
int processed=0;
//reset
while(oct_idx) {
BakedLightBaker::Octant *oct = &octants[oct_idx];
oct->texture_x=0;
oct->texture_y=0;
oct_idx=oct->next_leaf;
}
oct_idx=leaf_list;
//assign
while(oct_idx) {
BakedLightBaker::Octant *oct = &octants[oct_idx];
if (oct->first_neighbour && oct->texture_x==0 && oct->texture_y==0) {
//was not processed
uint32_t current_idx=oct_idx;
int reused=0;
while(current_idx) {
BakedLightBaker::Octant *o = &octants[current_idx];
if (col+1 >= otex_w) {
col=0;
row+=4;
}
o->texture_x=col;
o->texture_y=row;
processed++;
if (o->bake_neighbour) {
reused++;
}
col+=o->bake_neighbour ? 1 : 2; //reuse neighbour
current_idx=o->bake_neighbour;
}
if (reused>longest_line_reused) {
longest_line_reused=reused;
}
}
oct_idx=oct->next_leaf;
}
row+=4;
if (otex_w < row) {
otex_w*=2;
} else {
baked_light_texture_w=otex_w;
baked_light_texture_h=nearest_power_of_2(row);
print_line("w: "+itos(otex_w));
print_line("h: "+itos(row));
break;
}
}
{
otex_w=(1<<lattice_size)*(1<<lattice_size)*2; //make sure lattice fits horizontally
Vector3 lattice_cell_size=octree_aabb.size;
for(int i=0;i<lattice_size;i++) {
lattice_cell_size*=0.5;
}
while(true) {
//let's plot the leafs first, given the octree is not so obvious which size it will have
int row=4+4*(1<<lattice_size);
int col=0;
col=0;
row+=4;
print_line("end at row "+itos(row));
//put octree, no need for recursion, just loop backwards.
int regular_octants=0;
for(int i=octant_pool_size-1;i>=0;i--) {
BakedLightBaker::Octant *oct = &octants[i];
if (oct->leaf) //ignore leaf
continue;
if (oct->aabb.size.x>lattice_cell_size.x*1.1) { //bigger than latice, skip
oct->texture_x=0;
oct->texture_y=0;
} else if (oct->aabb.size.x>lattice_cell_size.x*0.8) {
//this is the initial lattice
Vector3 pos = oct->aabb.pos - octree_aabb.pos; //make sure is always positive
int x = int((pos.x+lattice_cell_size.x*0.5)/lattice_cell_size.x);
int y = int((pos.y+lattice_cell_size.y*0.5)/lattice_cell_size.y);
int z = int((pos.z+lattice_cell_size.z*0.5)/lattice_cell_size.z);
//bug net
ERR_FAIL_INDEX(x,(1<<lattice_size));
ERR_FAIL_INDEX(y,(1<<lattice_size));
ERR_FAIL_INDEX(z,(1<<lattice_size));
/*int ofs = z*(1<<lattice_size)*(1<<lattice_size)+y*(1<<lattice_size)+x;
ofs*=4;
oct->texture_x=ofs%otex_w;
oct->texture_y=(ofs/otex_w)*4+4;
*/
oct->texture_x=(x+(1<<lattice_size)*z)*2;
oct->texture_y=4+y*4;
//print_line("pos: "+itos(x)+","+itos(y)+","+itos(z)+" - ofs"+itos(oct->texture_x)+","+itos(oct->texture_y));
} else {
//an everyday regular octant
if (col+2 > otex_w) {
col=0;
row+=4;
}
oct->texture_x=col;
oct->texture_y=row;
col+=2;
regular_octants++;
}
}
print_line("octants end at row "+itos(row)+" totalling"+itos(regular_octants));
//ok evaluation.
if (otex_w<=2048 && row>2048) { //too big upwards, try bigger texture
otex_w*=2;
continue;
} else {
baked_octree_texture_w=otex_w;
baked_octree_texture_h=row+4;
break;
}
}
}
baked_octree_texture_h=nearest_power_of_2(baked_octree_texture_h);
print_line("RESULT! "+itos(baked_octree_texture_w)+","+itos(baked_octree_texture_h));
}
double BakedLightBaker::get_normalization(int p_light_idx) const {
double nrg=0;
const LightData &dl=lights[p_light_idx];
double cell_area = cell_size*cell_size;;
//nrg+= /*dl.energy */ (dl.rays_thrown * cell_area / dl.area);
nrg=dl.rays_thrown * cell_area;
nrg*=(Math_PI*plot_size*plot_size)*0.5; // damping of radial linear gradient kernel
nrg*=dl.constant;
//nrg*=5;
return nrg;
}
double BakedLightBaker::get_modifier(int p_light_idx) const {
double nrg=0;
const LightData &dl=lights[p_light_idx];
double cell_area = cell_size*cell_size;;
//nrg+= /*dl.energy */ (dl.rays_thrown * cell_area / dl.area);
nrg=cell_area;
nrg*=(Math_PI*plot_size*plot_size)*0.5; // damping of radial linear gradient kernel
nrg*=dl.constant;
//nrg*=5;
return nrg;
}
void BakedLightBaker::throw_rays(ThreadStack& thread_stack,int p_amount) {
for(int i=0;i<lights.size();i++) {
LightData &dl=lights[i];
int amount = p_amount * total_light_area / dl.area;
double mod = 1.0/double(get_modifier(i));
mod*=p_amount/float(amount);
switch(dl.type) {
case VS::LIGHT_DIRECTIONAL: {
for(int j=0;j<amount;j++) {
Vector3 from = dl.pos;
double r1 = double(rand())/RAND_MAX;
double r2 = double(rand())/RAND_MAX;
from+=dl.up*(r1*2.0-1.0);
from+=dl.left*(r2*2.0-1.0);
Vector3 to = from+dl.dir*dl.length;
Color col=dl.diffuse;
float m = mod*dl.energy;
col.r*=m;
col.g*=m;
col.b*=m;
dl.rays_thrown++;
baked_light_baker_add_64i(&total_rays,1);
_throw_ray(thread_stack,dl.bake_direct,from,to,dl.length,col,NULL,0,0,max_bounces,true);
}
} break;
case VS::LIGHT_OMNI: {
for(int j=0;j<amount;j++) {
Vector3 from = dl.pos;
double r1 = double(rand())/RAND_MAX;
double r2 = double(rand())/RAND_MAX;
double r3 = double(rand())/RAND_MAX;
#if 0
//crap is not uniform..
Vector3 dir = Vector3(r1*2.0-1.0,r2*2.0-1.0,r3*2.0-1.0).normalized();
#else
double phi = r1*Math_PI*2.0;
double costheta = r2*2.0-1.0;
double u = r3;
double theta = acos( costheta );
double r = 1.0 * pow( u,1/3.0 );
Vector3 dir(
r * sin( theta) * cos( phi ),
r * sin( theta) * sin( phi ),
r * cos( theta )
);
dir.normalize();
#endif
Vector3 to = dl.pos+dir*dl.radius;
Color col=dl.diffuse;
float m = mod*dl.energy;
col.r*=m;
col.g*=m;
col.b*=m;
dl.rays_thrown++;
baked_light_baker_add_64i(&total_rays,1);
_throw_ray(thread_stack,dl.bake_direct,from,to,dl.radius,col,dl.attenuation_table.ptr(),0,dl.radius,max_bounces,true);
// _throw_ray(i,from,to,dl.radius,col,NULL,0,dl.radius,max_bounces,true);
}
} break;
case VS::LIGHT_SPOT: {
for(int j=0;j<amount;j++) {
Vector3 from = dl.pos;
double r1 = double(rand())/RAND_MAX;
//double r2 = double(rand())/RAND_MAX;
double r3 = double(rand())/RAND_MAX;
float d=Math::tan(Math::deg2rad(dl.spot_angle));
float x = sin(r1*Math_PI*2.0)*d;
float y = cos(r1*Math_PI*2.0)*d;
Vector3 dir = r3*(dl.dir + dl.up*y + dl.left*x) + (1.0-r3)*dl.dir;
dir.normalize();
Vector3 to = dl.pos+dir*dl.radius;
Color col=dl.diffuse;
float m = mod*dl.energy;
col.r*=m;
col.g*=m;
col.b*=m;
dl.rays_thrown++;
baked_light_baker_add_64i(&total_rays,1);
_throw_ray(thread_stack,dl.bake_direct,from,to,dl.radius,col,dl.attenuation_table.ptr(),0,dl.radius,max_bounces,true);
// _throw_ray(i,from,to,dl.radius,col,NULL,0,dl.radius,max_bounces,true);
}
} break;
}
}
}
void BakedLightBaker::bake(const Ref<BakedLight> &p_light, Node* p_node) {
if (baking)
return;
cell_count=0;
base_inv=p_node->cast_to<Spatial>()->get_global_transform().affine_inverse();
EditorProgress ep("bake",TTR("Light Baker Setup:"),5);
baked_light=p_light;
lattice_size=baked_light->get_initial_lattice_subdiv();
octree_depth=baked_light->get_cell_subdivision();
plot_size=baked_light->get_plot_size();
max_bounces=baked_light->get_bounces();
use_diffuse=baked_light->get_bake_flag(BakedLight::BAKE_DIFFUSE);
use_specular=baked_light->get_bake_flag(BakedLight::BAKE_SPECULAR);
use_translucency=baked_light->get_bake_flag(BakedLight::BAKE_TRANSLUCENT);
edge_damp=baked_light->get_edge_damp();
normal_damp=baked_light->get_normal_damp();
octree_extra_margin=baked_light->get_cell_extra_margin();
tint=baked_light->get_tint();
ao_radius=baked_light->get_ao_radius();
ao_strength=baked_light->get_ao_strength();
linear_color=baked_light->get_bake_flag(BakedLight::BAKE_LINEAR_COLOR);
baked_textures.clear();
for(int i=0;i<baked_light->get_lightmaps_count();i++) {
BakeTexture bt;
bt.width=baked_light->get_lightmap_gen_size(i).x;
bt.height=baked_light->get_lightmap_gen_size(i).y;
baked_textures.push_back(bt);
}
ep.step(TTR("Parsing Geometry"),0);
_parse_geometry(p_node);
mat_map.clear();
tex_map.clear();
print_line("\ttotal triangles: "+itos(triangles.size()));
// no geometry
if (triangles.size() == 0) {
return;
}
ep.step(TTR("Fixing Lights"),1);
_fix_lights();
ep.step(TTR("Making BVH"),2);
_make_bvh();
ep.step(TTR("Creating Light Octree"),3);
_make_octree();
ep.step(TTR("Creating Octree Texture"),4);
_make_octree_texture();
baking=true;
_start_thread();
}
void BakedLightBaker::update_octree_sampler(DVector<int> &p_sampler) {
BakedLightBaker::Octant *octants=octant_pool.ptr();
double norm = 1.0/double(total_rays);
if (p_sampler.size()==0 || first_bake_to_map) {
Vector<int> tmp_smp;
tmp_smp.resize(32); //32 for header
for(int i=0;i<32;i++) {
tmp_smp[i]=0;
}
for(int i=octant_pool_size-1;i>=0;i--) {
if (i==0)
tmp_smp[1]=tmp_smp.size();
Octant &octant=octants[i];
octant.sampler_ofs = tmp_smp.size();
int idxcol[2]={0,0};
int r = CLAMP((octant.full_accum[0]*norm)*2048,0,32767);
int g = CLAMP((octant.full_accum[1]*norm)*2048,0,32767);
int b = CLAMP((octant.full_accum[2]*norm)*2048,0,32767);
idxcol[0]|=r;
idxcol[1]|=(g<<16)|b;
if (octant.leaf) {
tmp_smp.push_back(idxcol[0]);
tmp_smp.push_back(idxcol[1]);
} else {
for(int j=0;j<8;j++) {
if (octant.children[j]) {
idxcol[0]|=(1<<(j+16));
}
}
tmp_smp.push_back(idxcol[0]);
tmp_smp.push_back(idxcol[1]);
for(int j=0;j<8;j++) {
if (octant.children[j]) {
tmp_smp.push_back(octants[octant.children[j]].sampler_ofs);
if (octants[octant.children[j]].sampler_ofs==0) {
print_line("FUUUUUUUUCK");
}
}
}
}
}
p_sampler.resize(tmp_smp.size());
DVector<int>::Write w = p_sampler.write();
int ss = tmp_smp.size();
for(int i=0;i<ss;i++) {
w[i]=tmp_smp[i];
}
first_bake_to_map=false;
}
double gamma = baked_light->get_gamma_adjust();
double mult = baked_light->get_energy_multiplier();
float saturation = baked_light->get_saturation();
DVector<int>::Write w = p_sampler.write();
encode_uint32(octree_depth,(uint8_t*)&w[2]);
encode_uint32(linear_color,(uint8_t*)&w[3]);
encode_float(octree_aabb.pos.x,(uint8_t*)&w[4]);
encode_float(octree_aabb.pos.y,(uint8_t*)&w[5]);
encode_float(octree_aabb.pos.z,(uint8_t*)&w[6]);
encode_float(octree_aabb.size.x,(uint8_t*)&w[7]);
encode_float(octree_aabb.size.y,(uint8_t*)&w[8]);
encode_float(octree_aabb.size.z,(uint8_t*)&w[9]);
//norm*=multiplier;
for(int i=octant_pool_size-1;i>=0;i--) {
Octant &octant=octants[i];
int idxcol[2]={w[octant.sampler_ofs],w[octant.sampler_ofs+1]};
double rf=pow(octant.full_accum[0]*norm*mult,gamma);
double gf=pow(octant.full_accum[1]*norm*mult,gamma);
double bf=pow(octant.full_accum[2]*norm*mult,gamma);
double gray = (rf+gf+bf)/3.0;
rf = gray + (rf-gray)*saturation;
gf = gray + (gf-gray)*saturation;
bf = gray + (bf-gray)*saturation;
int r = CLAMP((rf)*2048,0,32767);
int g = CLAMP((gf)*2048,0,32767);
int b = CLAMP((bf)*2048,0,32767);
idxcol[0]=((idxcol[0]>>16)<<16)|r;
idxcol[1]=(g<<16)|b;
w[octant.sampler_ofs]=idxcol[0];
w[octant.sampler_ofs+1]=idxcol[1];
}
}
void BakedLightBaker::update_octree_images(DVector<uint8_t> &p_octree,DVector<uint8_t> &p_light) {
int len = baked_octree_texture_w*baked_octree_texture_h*4;
p_octree.resize(len);
int ilen = baked_light_texture_w*baked_light_texture_h*4;
p_light.resize(ilen);
DVector<uint8_t>::Write w = p_octree.write();
zeromem(w.ptr(),len);
DVector<uint8_t>::Write iw = p_light.write();
zeromem(iw.ptr(),ilen);
float gamma = baked_light->get_gamma_adjust();
float mult = baked_light->get_energy_multiplier();
for(int i=0;i<len;i+=4) {
w[i+0]=0xFF;
w[i+1]=0;
w[i+2]=0xFF;
w[i+3]=0xFF;
}
for(int i=0;i<ilen;i+=4) {
iw[i+0]=0xFF;
iw[i+1]=0;
iw[i+2]=0xFF;
iw[i+3]=0xFF;
}
float multiplier=1.0;
if (baked_light->get_format()==BakedLight::FORMAT_HDR8)
multiplier=8;
encode_uint32(baked_octree_texture_w,&w[0]);
encode_uint32(baked_octree_texture_h,&w[4]);
encode_uint32(0,&w[8]);
encode_float(1<<lattice_size,&w[12]);
encode_uint32(octree_depth-lattice_size,&w[16]);
encode_uint32(multiplier,&w[20]);
encode_uint16(baked_light_texture_w,&w[24]); //if present, use the baked light texture
encode_uint16(baked_light_texture_h,&w[26]);
encode_uint32(0,&w[28]); //baked light texture format
encode_float(octree_aabb.pos.x,&w[32]);
encode_float(octree_aabb.pos.y,&w[36]);
encode_float(octree_aabb.pos.z,&w[40]);
encode_float(octree_aabb.size.x,&w[44]);
encode_float(octree_aabb.size.y,&w[48]);
encode_float(octree_aabb.size.z,&w[52]);
BakedLightBaker::Octant *octants=octant_pool.ptr();
int octant_count=octant_pool_size;
uint8_t *ptr = w.ptr();
uint8_t *lptr = iw.ptr();
int child_offsets[8]={
0,
4,
baked_octree_texture_w*4,
baked_octree_texture_w*4+4,
baked_octree_texture_w*8+0,
baked_octree_texture_w*8+4,
baked_octree_texture_w*8+baked_octree_texture_w*4,
baked_octree_texture_w*8+baked_octree_texture_w*4+4,
};
int lchild_offsets[8]={
0,
4,
baked_light_texture_w*4,
baked_light_texture_w*4+4,
baked_light_texture_w*8+0,
baked_light_texture_w*8+4,
baked_light_texture_w*8+baked_light_texture_w*4,
baked_light_texture_w*8+baked_light_texture_w*4+4,
};
/*Vector<double> norm_arr;
norm_arr.resize(lights.size());
for(int i=0;i<lights.size();i++) {
norm_arr[i] = 1.0/get_normalization(i);
}
const double *normptr=norm_arr.ptr();
*/
double norm = 1.0/double(total_rays);
mult/=multiplier;
double saturation = baked_light->get_saturation();
for(int i=0;i<octant_count;i++) {
Octant &oct=octants[i];
if (oct.texture_x==0 && oct.texture_y==0)
continue;
if (oct.leaf) {
int ofs = (oct.texture_y * baked_light_texture_w + oct.texture_x)<<2;
ERR_CONTINUE(ofs<0 || ofs >ilen);
//write colors
for(int j=0;j<8;j++) {
//if (!oct.children[j])
// continue;
uint8_t *iptr=&lptr[ofs+lchild_offsets[j]];
float r=oct.light_accum[j][0]*norm;
float g=oct.light_accum[j][1]*norm;
float b=oct.light_accum[j][2]*norm;
r=pow(r*mult,gamma);
g=pow(g*mult,gamma);
b=pow(b*mult,gamma);
double gray = (r+g+b)/3.0;
r = gray + (r-gray)*saturation;
g = gray + (g-gray)*saturation;
b = gray + (b-gray)*saturation;
float ic[3]={
r,
g,
b,
};
iptr[0]=CLAMP(ic[0]*255.0,0,255);
iptr[1]=CLAMP(ic[1]*255.0,0,255);
iptr[2]=CLAMP(ic[2]*255.0,0,255);
iptr[3]=255;
}
} else {
int ofs = (oct.texture_y * baked_octree_texture_w + oct.texture_x)<<2;
ERR_CONTINUE(ofs<0 || ofs >len);
//write indices
for(int j=0;j<8;j++) {
if (!oct.children[j])
continue;
Octant&choct=octants[oct.children[j]];
uint8_t *iptr=&ptr[ofs+child_offsets[j]];
iptr[0]=choct.texture_x>>8;
iptr[1]=choct.texture_x&0xFF;
iptr[2]=choct.texture_y>>8;
iptr[3]=choct.texture_y&0xFF;
}
}
}
}
void BakedLightBaker::_free_bvh(BVH* p_bvh) {
if (!p_bvh->leaf) {
if (p_bvh->children[0])
_free_bvh(p_bvh->children[0]);
if (p_bvh->children[1])
_free_bvh(p_bvh->children[1]);
}
memdelete(p_bvh);
}
bool BakedLightBaker::is_baking() {
return baking;
}
void BakedLightBaker::set_pause(bool p_pause){
if (paused==p_pause)
return;
paused=p_pause;
if (paused) {
_stop_thread();
} else {
_start_thread();
}
}
bool BakedLightBaker::is_paused() {
return paused;
}
void BakedLightBaker::_bake_thread_func(void *arg) {
BakedLightBaker *ble = (BakedLightBaker*)arg;
ThreadStack thread_stack;
thread_stack.ray_stack = memnew_arr(uint32_t,ble->bvh_depth);
thread_stack.bvh_stack = memnew_arr(BVH*,ble->bvh_depth);
thread_stack.octant_stack = memnew_arr(uint32_t,ble->octree_depth*2 );
thread_stack.octantptr_stack = memnew_arr(uint32_t,ble->octree_depth*2 );
while(!ble->bake_thread_exit) {
ble->throw_rays(thread_stack,1000);
}
memdelete_arr(thread_stack.ray_stack );
memdelete_arr(thread_stack.bvh_stack );
memdelete_arr(thread_stack.octant_stack );
memdelete_arr(thread_stack.octantptr_stack );
}
void BakedLightBaker::_start_thread() {
if (threads.size()!=0)
return;
bake_thread_exit=false;
int thread_count = EDITOR_DEF("light_baker/custom_bake_threads",0);
if (thread_count<=0 || thread_count>64)
thread_count=OS::get_singleton()->get_processor_count();
//thread_count=1;
threads.resize(thread_count);
for(int i=0;i<threads.size();i++) {
threads[i]=Thread::create(_bake_thread_func,this);
}
}
void BakedLightBaker::_stop_thread() {
if (threads.size()==0)
return;
bake_thread_exit=true;
for(int i=0;i<threads.size();i++) {
Thread::wait_to_finish(threads[i]);
memdelete(threads[i]);
}
threads.clear();
}
void BakedLightBaker::_plot_pixel_to_lightmap(int x, int y, int width, int height, uint8_t *image, const Vector3& p_pos,const Vector3& p_normal,double *p_norm_ptr,float mult,float gamma) {
uint8_t *ptr = &image[(y*width+x)*4];
//int lc = lights.size();
double norm = 1.0/double(total_rays);
Color color;
Octant *octants=octant_pool.ptr();
int octant_idx=0;
while(true) {
Octant &octant=octants[octant_idx];
if (octant.leaf) {
Vector3 lpos = p_pos-octant.aabb.pos;
lpos/=octant.aabb.size;
Vector3 cols[8];
for(int i=0;i<8;i++) {
cols[i].x+=octant.light_accum[i][0]*norm;
cols[i].y+=octant.light_accum[i][1]*norm;
cols[i].z+=octant.light_accum[i][2]*norm;
}
/*Vector3 final = (cols[0] + (cols[1] - cols[0]) * lpos.y);
final = final + ((cols[2] + (cols[3] - cols[2]) * lpos.y) - final)*lpos.x;
Vector3 final2 = (cols[4+0] + (cols[4+1] - cols[4+0]) * lpos.y);
final2 = final2 + ((cols[4+2] + (cols[4+3] - cols[4+2]) * lpos.y) - final2)*lpos.x;*/
Vector3 finala = cols[0].linear_interpolate(cols[1],lpos.x);
Vector3 finalb = cols[2].linear_interpolate(cols[3],lpos.x);
Vector3 final = finala.linear_interpolate(finalb,lpos.y);
Vector3 final2a = cols[4+0].linear_interpolate(cols[4+1],lpos.x);
Vector3 final2b = cols[4+2].linear_interpolate(cols[4+3],lpos.x);
Vector3 final2 = final2a.linear_interpolate(final2b,lpos.y);
final = final.linear_interpolate(final2,lpos.z);
if (baked_light->get_format()==BakedLight::FORMAT_HDR8)
final*=8.0;
color.r=pow(final.x*mult,gamma);
color.g=pow(final.y*mult,gamma);
color.b=pow(final.z*mult,gamma);
color.a=1.0;
int lc = lights.size();
LightData *lv = lights.ptr();
for(int i=0;i<lc;i++) {
//shadow baking
if (!lv[i].bake_shadow)
continue;
Vector3 from = p_pos+p_normal*0.01;
Vector3 to;
float att=0;
switch(lv[i].type) {
case VS::LIGHT_DIRECTIONAL: {
to=from-lv[i].dir*lv[i].length;
} break;
case VS::LIGHT_OMNI: {
to=lv[i].pos;
float d = MIN(lv[i].radius,to.distance_to(from))/lv[i].radius;
att=d;//1.0-d;
} break;
default: continue;
}
uint32_t* stack = ray_stack;
BVH **bstack = bvh_stack;
enum {
TEST_RAY_BIT=0,
VISIT_LEFT_BIT=1,
VISIT_RIGHT_BIT=2,
VISIT_DONE_BIT=3,
};
bool intersected=false;
int level=0;
Vector3 n = (to-from);
float len=n.length();
if (len==0)
continue;
n/=len;
bstack[0]=bvh;
stack[0]=TEST_RAY_BIT;
while(!intersected) {
uint32_t mode = stack[level];
const BVH &b = *bstack[level];
bool done=false;
switch(mode) {
case TEST_RAY_BIT: {
if (b.leaf) {
Face3 f3(b.leaf->vertices[0],b.leaf->vertices[1],b.leaf->vertices[2]);
Vector3 res;
if (f3.intersects_segment(from,to)) {
intersected=true;
done=true;
}
stack[level]=VISIT_DONE_BIT;
} else {
bool valid = b.aabb.smits_intersect_ray(from,n,0,len);
//bool valid = b.aabb.intersects_segment(p_begin,p_end);
// bool valid = b.aabb.intersects(ray_aabb);
if (!valid) {
stack[level]=VISIT_DONE_BIT;
} else {
stack[level]=VISIT_LEFT_BIT;
}
}
} continue;
case VISIT_LEFT_BIT: {
stack[level]=VISIT_RIGHT_BIT;
bstack[level+1]=b.children[0];
stack[level+1]=TEST_RAY_BIT;
level++;
} continue;
case VISIT_RIGHT_BIT: {
stack[level]=VISIT_DONE_BIT;
bstack[level+1]=b.children[1];
stack[level+1]=TEST_RAY_BIT;
level++;
} continue;
case VISIT_DONE_BIT: {
if (level==0) {
done=true;
break;
} else
level--;
} continue;
}
if (done)
break;
}
if (intersected) {
color.a=Math::lerp(MAX(0.01,lv[i].darkening),1.0,att);
}
}
break;
} else {
Vector3 lpos = p_pos - octant.aabb.pos;
Vector3 half = octant.aabb.size * 0.5;
int ofs=0;
if (lpos.x >= half.x)
ofs|=1;
if (lpos.y >= half.y)
ofs|=2;
if (lpos.z >= half.z)
ofs|=4;
octant_idx = octant.children[ofs];
if (octant_idx==0)
return;
}
}
ptr[0]=CLAMP(color.r*255.0,0,255);
ptr[1]=CLAMP(color.g*255.0,0,255);
ptr[2]=CLAMP(color.b*255.0,0,255);
ptr[3]=CLAMP(color.a*255.0,0,255);
}
Error BakedLightBaker::transfer_to_lightmaps() {
if (!triangles.size() || baked_textures.size()==0)
return ERR_UNCONFIGURED;
EditorProgress ep("transfer_to_lightmaps",TTR("Transfer to Lightmaps:"),baked_textures.size()*2+triangles.size());
for(int i=0;i<baked_textures.size();i++) {
ERR_FAIL_COND_V( baked_textures[i].width<=0 || baked_textures[i].height<=0,ERR_UNCONFIGURED );
baked_textures[i].data.resize( baked_textures[i].width*baked_textures[i].height*4 );
zeromem(baked_textures[i].data.ptr(),baked_textures[i].data.size());
ep.step(TTR("Allocating Texture #")+itos(i+1),i);
}
Vector<double> norm_arr;
norm_arr.resize(lights.size());
for(int i=0;i<lights.size();i++) {
norm_arr[i] = 1.0/get_normalization(i);
}
float gamma = baked_light->get_gamma_adjust();
float mult = baked_light->get_energy_multiplier();
for(int i=0;i<triangles.size();i++) {
if (i%200==0) {
ep.step(TTR("Baking Triangle #")+itos(i),i+baked_textures.size());
}
Triangle &t=triangles[i];
if (t.baked_texture<0 || t.baked_texture>=baked_textures.size())
continue;
BakeTexture &bt=baked_textures[t.baked_texture];
Vector3 normal = Plane(t.vertices[0],t.vertices[1],t.vertices[2]).normal;
int x[3];
int y[3];
Vector3 vertices[3]={
t.vertices[0],
t.vertices[1],
t.vertices[2]
};
for(int j=0;j<3;j++) {
x[j]=t.bake_uvs[j].x*bt.width;
y[j]=t.bake_uvs[j].y*bt.height;
x[j]=CLAMP(x[j],0,bt.width-1);
y[j]=CLAMP(y[j],0,bt.height-1);
}
{
// sort the points vertically
if (y[1] > y[2]) {
SWAP(x[1], x[2]);
SWAP(y[1], y[2]);
SWAP(vertices[1],vertices[2]);
}
if (y[0] > y[1]) {
SWAP(x[0], x[1]);
SWAP(y[0], y[1]);
SWAP(vertices[0],vertices[1]);
}
if (y[1] > y[2]) {
SWAP(x[1], x[2]);
SWAP(y[1], y[2]);
SWAP(vertices[1],vertices[2]);
}
double dx_far = double(x[2] - x[0]) / (y[2] - y[0] + 1);
double dx_upper = double(x[1] - x[0]) / (y[1] - y[0] + 1);
double dx_low = double(x[2] - x[1]) / (y[2] - y[1] + 1);
double xf = x[0];
double xt = x[0] + dx_upper; // if y[0] == y[1], special case
for (int yi = y[0]; yi <= (y[2] > bt.height-1 ? bt.height-1 : y[2]); yi++)
{
if (yi >= 0) {
for (int xi = (xf > 0 ? int(xf) : 0); xi <= (xt < bt.width ? xt : bt.width-1) ; xi++) {
//pixels[int(x + y * width)] = color;
Vector2 v0 = Vector2(x[1]-x[0],y[1]-y[0]);
Vector2 v1 = Vector2(x[2]-x[0],y[2]-y[0]);
//vertices[2] - vertices[0];
Vector2 v2 = Vector2(xi-x[0],yi-y[0]);
float d00 = v0.dot( v0);
float d01 = v0.dot( v1);
float d11 = v1.dot( v1);
float d20 = v2.dot( v0);
float d21 = v2.dot( v1);
float denom = (d00 * d11 - d01 * d01);
Vector3 pos;
if (denom==0) {
pos=t.vertices[0];
} else {
float v = (d11 * d20 - d01 * d21) / denom;
float w = (d00 * d21 - d01 * d20) / denom;
float u = 1.0f - v - w;
pos = vertices[0]*u + vertices[1]*v + vertices[2]*w;
}
_plot_pixel_to_lightmap(xi,yi,bt.width,bt.height,bt.data.ptr(),pos,normal,norm_arr.ptr(),mult,gamma);
}
for (int xi = (xf < bt.width ? int(xf) : bt.width-1); xi >= (xt > 0 ? xt : 0); xi--) {
//pixels[int(x + y * width)] = color;
Vector2 v0 = Vector2(x[1]-x[0],y[1]-y[0]);
Vector2 v1 = Vector2(x[2]-x[0],y[2]-y[0]);
//vertices[2] - vertices[0];
Vector2 v2 = Vector2(xi-x[0],yi-y[0]);
float d00 = v0.dot( v0);
float d01 = v0.dot( v1);
float d11 = v1.dot( v1);
float d20 = v2.dot( v0);
float d21 = v2.dot( v1);
float denom = (d00 * d11 - d01 * d01);
Vector3 pos;
if (denom==0) {
pos=t.vertices[0];
} else {
float v = (d11 * d20 - d01 * d21) / denom;
float w = (d00 * d21 - d01 * d20) / denom;
float u = 1.0f - v - w;
pos = vertices[0]*u + vertices[1]*v + vertices[2]*w;
}
_plot_pixel_to_lightmap(xi,yi,bt.width,bt.height,bt.data.ptr(),pos,normal,norm_arr.ptr(),mult,gamma);
}
}
xf += dx_far;
if (yi < y[1])
xt += dx_upper;
else
xt += dx_low;
}
}
}
for(int i=0;i<baked_textures.size();i++) {
{
ep.step(TTR("Post-Processing Texture #")+itos(i),i+baked_textures.size()+triangles.size());
BakeTexture &bt=baked_textures[i];
Vector<uint8_t> copy_data=bt.data;
uint8_t *data=bt.data.ptr();
const int max_radius=8;
const int shadow_radius=2;
const int max_dist=0x7FFFFFFF;
for(int x=0;x<bt.width;x++) {
for(int y=0;y<bt.height;y++) {
uint8_t a = copy_data[(y*bt.width+x)*4+3];
if (a>0) {
//blur shadow
int from_x = MAX(0,x-shadow_radius);
int to_x = MIN(bt.width-1,x+shadow_radius);
int from_y = MAX(0,y-shadow_radius);
int to_y = MIN(bt.height-1,y+shadow_radius);
int sum=0;
int sumc=0;
for(int k=from_y;k<=to_y;k++) {
for(int l=from_x;l<=to_x;l++) {
const uint8_t * rp = &copy_data[(k*bt.width+l)<<2];
sum+=rp[3];
sumc++;
}
}
sum/=sumc;
data[(y*bt.width+x)*4+3]=sum;
} else {
int closest_dist=max_dist;
uint8_t closest_color[4];
int from_x = MAX(0,x-max_radius);
int to_x = MIN(bt.width-1,x+max_radius);
int from_y = MAX(0,y-max_radius);
int to_y = MIN(bt.height-1,y+max_radius);
for(int k=from_y;k<=to_y;k++) {
for(int l=from_x;l<=to_x;l++) {
int dy = y-k;
int dx = x-l;
int dist = dy*dy+dx*dx;
if (dist>=closest_dist)
continue;
const uint8_t * rp = &copy_data[(k*bt.width+l)<<2];
if (rp[3]==0)
continue;
closest_dist=dist;
closest_color[0]=rp[0];
closest_color[1]=rp[1];
closest_color[2]=rp[2];
closest_color[3]=rp[3];
}
}
if (closest_dist!=max_dist) {
data[(y*bt.width+x)*4+0]=closest_color[0];
data[(y*bt.width+x)*4+1]=closest_color[1];
data[(y*bt.width+x)*4+2]=closest_color[2];
data[(y*bt.width+x)*4+3]=closest_color[3];
}
}
}
}
}
DVector<uint8_t> dv;
dv.resize(baked_textures[i].data.size());
{
DVector<uint8_t>::Write w = dv.write();
copymem(w.ptr(),baked_textures[i].data.ptr(),baked_textures[i].data.size());
}
Image img(baked_textures[i].width,baked_textures[i].height,0,Image::FORMAT_RGBA,dv);
Ref<ImageTexture> tex = memnew( ImageTexture );
tex->create_from_image(img);
baked_light->set_lightmap_texture(i,tex);
}
return OK;
}
void BakedLightBaker::clear() {
_stop_thread();
if (bvh)
_free_bvh(bvh);
if (ray_stack)
memdelete_arr(ray_stack);
if (octant_stack)
memdelete_arr(octant_stack);
if (octantptr_stack)
memdelete_arr(octantptr_stack);
if (bvh_stack)
memdelete_arr(bvh_stack);
/*
* ???
for(int i=0;i<octant_pool.size();i++) {
//if (octant_pool[i].leaf) {
// memdelete_arr( octant_pool[i].light );
//} Vector<double> norm_arr;
//norm_arr.resize(lights.size());
for(int i=0;i<lights.size();i++) {
norm_arr[i] = 1.0/get_normalization(i);
}
const double *normptr=norm_arr.ptr();
}
*/
octant_pool.clear();
octant_pool_size=0;
bvh=NULL;
leaf_list=0;
cell_count=0;
ray_stack=NULL;
octant_stack=NULL;
octantptr_stack=NULL;
bvh_stack=NULL;
materials.clear();
materials.clear();
textures.clear();
lights.clear();
triangles.clear();;
endpoint_normal.clear();
endpoint_normal_bits.clear();
baked_octree_texture_w=0;
baked_octree_texture_h=0;
paused=false;
baking=false;
bake_thread_exit=false;
first_bake_to_map=true;
baked_light=Ref<BakedLight>();
total_rays=0;
}
BakedLightBaker::BakedLightBaker() {
octree_depth=9;
lattice_size=4;
octant_pool.clear();
octant_pool_size=0;
bvh=NULL;
leaf_list=0;
cell_count=0;
ray_stack=NULL;
bvh_stack=NULL;
octant_stack=NULL;
octantptr_stack=NULL;
plot_size=2.5;
max_bounces=2;
materials.clear();
baked_octree_texture_w=0;
baked_octree_texture_h=0;
paused=false;
baking=false;
bake_thread_exit=false;
total_rays=0;
first_bake_to_map=true;
linear_color=false;
}
BakedLightBaker::~BakedLightBaker() {
clear();
}
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