dfhack/plugins/rendermax/renderer_light.hpp

368 lines
11 KiB
C++

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#ifndef RENDERER_LIGHT_INCLUDED
#define RENDERER_LIGHT_INCLUDED
#include "renderer_opengl.hpp"
#include "Types.h"
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#include <tuple>
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#include <stack>
#include <memory>
#include <unordered_map>
// we are not using boost so let's cheat:
template <class T>
inline void hash_combine(std::size_t & seed, const T & v)
{
std::hash<T> hasher;
seed ^= hasher(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
}
namespace std
{
template<typename S, typename T> struct hash<pair<S, T>>
{
inline size_t operator()(const pair<S, T> & v) const
{
size_t seed = 0;
::hash_combine(seed, v.first);
::hash_combine(seed, v.second);
return seed;
}
};
template<typename S, typename T,typename V> struct hash<tuple<S, T, V>>
{
inline size_t operator()(const tuple<S, T, V> & v) const
{
size_t seed = 0;
::hash_combine(seed,get<0>(v));
::hash_combine(seed,get<1>(v));
::hash_combine(seed,get<2>(v));
return seed;
}
};
}
// now we can hash pairs and tuples
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#include "modules/MapCache.h"
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bool isInRect(const df::coord2d& pos,const DFHack::rect2d& rect);
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struct renderer_light : public renderer_wrap {
private:
float light_adaptation;
rgbf adapt_to_light(const rgbf& light)
{
const float influence=0.0001f;
const float max_adapt=1;
const float min_adapt=0;
float intensity=(light.r+light.g+light.b)/3.0;
light_adaptation=intensity*influence+light_adaptation*(1-influence);
float delta=light_adaptation-intensity;
rgbf ret;
ret.r=light.r-delta;
ret.g=light.g-delta;
ret.b=light.b-delta;
return ret;
//if light_adaptation/intensity~1 then draw 1,1,1 (i.e. totally adapted)
/*
1. adapted -> 1,1,1 (full bright everything okay) delta=0 multiplier=?
2. light adapted, real=dark -> darker delta>0 multiplier<1
3. dark adapted, real=light -> lighter delta<0 multiplier>1
*/
//if light_adaptation/intensity!=0 then draw
}
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void colorizeTile(int x,int y)
{
const int tile = x*(df::global::gps->dimy) + y;
old_opengl* p=reinterpret_cast<old_opengl*>(parent);
float *fg = p->fg + tile * 4 * 6;
float *bg = p->bg + tile * 4 * 6;
float *tex = p->tex + tile * 2 * 6;
rgbf light=lightGrid[tile];//for light adaptation: rgbf light=adapt_to_light(lightGrid[tile]);
for (int i = 0; i < 6; i++) { //oh how sse would do wonders here, or shaders...
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*(fg++) *= light.r;
*(fg++) *= light.g;
*(fg++) *= light.b;
*(fg++) = 1;
*(bg++) *= light.r;
*(bg++) *= light.g;
*(bg++) *= light.b;
*(bg++) = 1;
}
}
void reinitLightGrid(int w,int h)
{
tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
lightGrid.resize(w*h,rgbf(1,1,1));
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}
void reinitLightGrid()
{
reinitLightGrid(df::global::gps->dimy,df::global::gps->dimx);
}
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public:
tthread::fast_mutex dataMutex;
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std::vector<rgbf> lightGrid;
renderer_light(renderer* parent):renderer_wrap(parent),light_adaptation(1)
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{
reinitLightGrid();
}
virtual void update_tile(int32_t x, int32_t y) {
renderer_wrap::update_tile(x,y);
tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
colorizeTile(x,y);
};
virtual void update_all() {
renderer_wrap::update_all();
tthread::lock_guard<tthread::fast_mutex> guard(dataMutex);
for (int x = 0; x < df::global::gps->dimx; x++)
for (int y = 0; y < df::global::gps->dimy; y++)
colorizeTile(x,y);
};
virtual void grid_resize(int32_t w, int32_t h) {
renderer_wrap::grid_resize(w,h);
reinitLightGrid(w,h);
};
virtual void resize(int32_t w, int32_t h) {
renderer_wrap::resize(w,h);
reinitLightGrid();
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}
};
class lightingEngine
{
public:
lightingEngine(renderer_light* target):myRenderer(target){}
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virtual ~lightingEngine(){}
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virtual void reinit()=0;
virtual void calculate()=0;
virtual void updateWindow()=0;
virtual void preRender()=0;
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virtual void loadSettings()=0;
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virtual void clear()=0;
virtual void setHour(float h)=0;
virtual void debug(bool enable)=0;
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protected:
renderer_light* myRenderer;
};
struct lightSource
{
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rgbf power;
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int radius;
bool flicker;
lightSource():power(0,0,0),radius(0),flicker(false)
{
}
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lightSource(rgbf power,int radius);
float powerSquared()const
{
return power.r*power.r+power.g*power.g+power.b*power.b;
}
void combine(const lightSource& other);
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};
struct matLightDef
{
bool isTransparent;
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rgbf transparency;
bool isEmiting;
bool flicker;
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rgbf emitColor;
int radius;
matLightDef():isTransparent(false),isEmiting(false),transparency(0,0,0),emitColor(0,0,0),radius(0){}
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matLightDef(rgbf transparency,rgbf emit,int rad):isTransparent(true),isEmiting(true),
transparency(transparency),emitColor(emit),radius(rad){}
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matLightDef(rgbf emit,int rad):isTransparent(false),isEmiting(true),emitColor(emit),radius(rad),transparency(0,0,0){}
matLightDef(rgbf transparency):isTransparent(true),isEmiting(false),transparency(transparency){}
lightSource makeSource(float size=1) const
{
if(size>0.999 && size<1.001)
return lightSource(emitColor,radius);
else
return lightSource(emitColor*size,radius*size);//todo check if this is sane
}
};
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struct buildingLightDef
{
matLightDef light;
bool poweredOnly;
bool useMaterial;
float thickness;
float size;
buildingLightDef():poweredOnly(false),useMaterial(true),thickness(1.0f),size(1.0f){}
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};
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struct itemLightDef
{
matLightDef light;
bool haul;
bool equiped;
bool onGround;
bool inBuilding;
bool inContainer;
bool useMaterial;
itemLightDef():haul(true),equiped(true),onGround(true),inBuilding(false),inContainer(false),useMaterial(true){}
};
struct creatureLightDef
{
matLightDef light;
};
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class lightThread;
class lightingEngineViewscreen;
class lightThreadDispatch
{
lightingEngineViewscreen *parent;
public:
DFHack::rect2d viewPort;
std::vector<std::unique_ptr<lightThread> > threadPool;
std::vector<lightSource>& lights;
tthread::mutex occlusionMutex;
tthread::condition_variable occlusionDone; //all threads wait for occlusion to finish
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bool occlusionReady;
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tthread::mutex unprocessedMutex;
std::stack<DFHack::rect2d> unprocessed; //stack of parts of map where lighting is not finished
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std::vector<rgbf>& occlusion;
int& num_diffusion;
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tthread::mutex writeLock; //mutex for lightMap
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std::vector<rgbf>& lightMap;
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tthread::condition_variable writesDone;
int writeCount;
lightThreadDispatch(lightingEngineViewscreen* p);
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~lightThreadDispatch();
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void signalDoneOcclusion();
void shutdown();
void waitForWrites();
int getW();
int getH();
void start(int count);
};
class lightThread
{
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std::vector<rgbf> canvas;
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lightThreadDispatch& dispatch;
DFHack::rect2d myRect;
void work(); //main light calculation function
void combine(); //combine existing canvas into global lightmap
public:
tthread::thread *myThread;
bool isDone; //no mutex, because bool is atomic
lightThread(lightThreadDispatch& dispatch);
~lightThread();
void run();
private:
void doLight(int x,int y);
void doRay(const rgbf& power,int cx,int cy,int tx,int ty,int num_diffuse);
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rgbf lightUpCell(rgbf power,int dx,int dy,int tx,int ty);
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};
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class lightingEngineViewscreen:public lightingEngine
{
public:
lightingEngineViewscreen(renderer_light* target);
~lightingEngineViewscreen();
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void reinit();
void calculate();
void updateWindow();
void preRender();
void loadSettings();
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void clear();
void debug(bool enable){doDebug=enable;};
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private:
void fixAdvMode(int mode);
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df::coord2d worldToViewportCoord(const df::coord2d& in,const DFHack::rect2d& r,const df::coord2d& window2d) ;
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void doSun(const lightSource& sky,MapExtras::MapCache& map);
void doOcupancyAndLights();
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rgbf propogateSun(MapExtras::Block* b, int x,int y,const rgbf& in,bool lastLevel);
void doRay(std::vector<rgbf> & target, rgbf power,int cx,int cy,int tx,int ty);
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void doFovs();
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void doLight(std::vector<rgbf> & target, int index);
rgbf lightUpCell(std::vector<rgbf> & target, rgbf power,int dx,int dy,int tx,int ty);
bool addLight(int tileId,const lightSource& light);
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void addOclusion(int tileId,const rgbf& c,float thickness);
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matLightDef* getMaterialDef(int matType,int matIndex);
buildingLightDef* getBuildingDef(df::building* bld);
creatureLightDef* getCreatureDef(df::unit* u);
itemLightDef* getItemDef(df::item* it);
//apply material to cell
void applyMaterial(int tileId,const matLightDef& mat,float size=1, float thickness = 1);
//try to find and apply material, if failed return false, and if def!=null then apply def.
bool applyMaterial(int tileId,int matType,int matIndex,float size=1,float thickness = 1,const matLightDef* def=NULL);
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size_t inline getIndex(int x,int y)
{
return x*h+y;
}
df::coord2d inline getCoords(int index)
{
return df::coord2d(index/h, index%h);
}
//maps
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std::vector<rgbf> lightMap;
std::vector<rgbf> ocupancy;
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std::vector<lightSource> lights;
//Threading stuff
int num_diffuse; //under same lock as ocupancy
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lightThreadDispatch threading;
//misc
void setHour(float h){dayHour=h;};
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int getW()const {return w;}
int getH()const {return h;}
public:
void lightWorkerThread(void * arg);
private:
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rgbf getSkyColor(float v);
bool doDebug;
//settings
float daySpeed;
float dayHour; //<0 to cycle
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std::vector<rgbf> dayColors; // a gradient of colors, first to 0, last to 24
///set up sane settings if setting file does not exist.
void defaultSettings();
static int parseMaterials(lua_State* L);
static int parseSpecial(lua_State* L);
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static int parseBuildings(lua_State* L);
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static int parseItems(lua_State* L);
static int parseCreatures(lua_State* L);
//special stuff
matLightDef matLava;
matLightDef matIce;
matLightDef matAmbience;
matLightDef matCursor;
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matLightDef matWall;
matLightDef matWater;
matLightDef matCitizen;
float levelDim;
int adv_mode;
//materials
std::unordered_map<std::pair<int,int>,matLightDef> matDefs;
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//buildings
std::unordered_map<std::tuple<int,int,int>,buildingLightDef> buildingDefs;
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//creatures
std::unordered_map<std::pair<int,int>,creatureLightDef> creatureDefs;
//items
std::unordered_map<std::pair<int,int>,itemLightDef> itemDefs;
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int w,h;
DFHack::rect2d mapPort;
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friend class lightThreadDispatch;
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};
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rgbf blend(const rgbf& a,const rgbf& b);
rgbf blendMax(const rgbf& a,const rgbf& b);
#endif