#include "gfxlib.h"
#include "hashtable_3d.h"
#include "gl_globals.h"

Go to the source code of this file.

Classes
class	gfx_light

struct	OpenGLLights

struct	LineCollideStar
	A sortable line collide object that will sort by object addr for dup elim. More...

Namespaces
	OpenGLL

Constant Groups
	OpenGLL

Macros
#define	GFX_ATTENUATED 1

#define	GFX_LIGHT_ENABLED 32

#define	GFX_LOCAL_LIGHT 64

#define	CTACC 40000

Functions
void	light_rekey_frame ()
	Rekeys a frame, remembering trashing old lights activated last frame. More...

void	unpicklights ()
	picks doubtless changed position More...

void	removelightfromnewpick (int whichlight)

int	findLocalClobberable ()
	Finds the local lights that are clobberable for new lights (permanent perhaps) More...

Variables
GLint	GFX_MAX_LIGHTS

GLint	GFX_OPTIMAL_LIGHTS

GFXBOOL	GFXLIGHTING

const unsigned int	lighthuge = 202020

const char	OpenGLL::GLL_OFF = 0
	If a light is off. More...

const char	OpenGLL::GLL_ON = 1
	If a light is on. More...

const char	OpenGLL::GLL_LOCAL = 2
	If a light is local or not. More...

const char	OpenGLL::GL_ENABLED = 4
	If a light is enabled for OpenGL. More...

int	_currentContext
	The curren tlight context. More...

vector< vector< gfx_light > >	_local_lights_dat
	The light data _llights points to one of these. More...

vector< GFXColor >	_ambient_light
	The ambient lights that are around. More...

vector< gfx_light > *	_llights
	The lights existing in a certain context. Points to _local_lights_dat. More...

int	_GLLightsEnabled
	How many lights are enabled (for fast picking) More...

OpenGLLights *	GLLights
	currently stored GL lights! More...

Hashtable3d< LineCollideStar, 20, CTACC, lighthuge >	lighttable
	table to store local lights, numerical pointers to _llights (eg indices) More...

float	intensity_cutoff
	something that would normally round down More...

float	optintense
	optimization globals More...

float	optsat

Macro Definition Documentation

#define CTACC 40000

Definition at line 161 of file gl_light.h.

#define GFX_ATTENUATED 1

Definition at line 9 of file gl_light.h.

Referenced by GFXLight::apply_attenuate().

#define GFX_LIGHT_ENABLED 32

Definition at line 14 of file gl_light.h.

Referenced by GFXLight::disable(), GFXLight::enable(), and gfx_light::enabled().

#define GFX_LOCAL_LIGHT 64

Definition at line 15 of file gl_light.h.

Referenced by gfx_light::Create(), and gfx_light::LocalLight().

Function Documentation

int findLocalClobberable ( )

Finds the local lights that are clobberable for new lights (permanent perhaps)

Definition at line 161 of file gl_light_state.cpp.

References GFX_MAX_LIGHTS, OpenGLL::GLL_ON, GLLights, i, and index.

Referenced by gfx_light::Create(), and gfx_light::dopickenables().

 {
     int clobberdisabled = -1;
     for (int i = 0; i < GFX_MAX_LIGHTS; i++) {
         if (GLLights[i].index == -1)
             return i;
         if ( !(GLLights[i].options&OpenGLL::GLL_ON) )
             clobberdisabled = i;
     }
     return clobberdisabled;
 }

void light_rekey_frame ( )

Rekeys a frame, remembering trashing old lights activated last frame.

Definition at line 498 of file gl_light_state.cpp.

References _llights, GFX_MAX_LIGHTS, OpenGLL::GL_ENABLED, GLLights, i, OpenGLLights::index, index, OpenGLLights::options, and unpicklights().

Referenced by GFXBeginScene().

 {
     unpicklights();     //picks doubtless changed position
     for (int i = 0; i < GFX_MAX_LIGHTS; i++) {
         if (GLLights[i].options&OpenGLL::GL_ENABLED) {
             if (GLLights[i].index >= 0) {
                 if ( (*_llights)[GLLights[i].index].Target() == i ) {
                     (*_llights)[GLLights[i].index].SendGLPosition( GL_LIGHT0+i );                       //send position transformed by current cam matrix
                 } else {
                     unsigned int li = GLLights[i].index;
                     if ( (*_llights)[li].enabled() && ( (*_llights)[li].Target() == -1 ) ) {
                         (*_llights)[li].ClobberGLLight( i );
                     } else {
                         glDisable( GL_LIGHT0+i );
                         GLLights[i].index = -1;
                     }
                 }
             } else {
                 glDisable( GL_LIGHT0+i );
                 GLLights[i].options &= (~OpenGLL::GL_ENABLED);
             }
         }
     }
 }

void removelightfromnewpick ( int whichlight)

Definition at line 44 of file gl_light_pick.cpp.

References i, and pickedlights.

Referenced by gfx_light::TrashFromGLLights().

                                        {
     std::vector<int>::iterator where;
     for (int i=0;i<2;++i) {
         while ((where=std::find(pickedlights[i].begin(),pickedlights[i].end(),index))!=pickedlights[i].end()) {
             pickedlights[i].erase(where);
         }
     }
 }

void unpicklights ( )

picks doubtless changed position

Definition at line 69 of file gl_light_pick.cpp.

References _llights, OpenGLL::GL_ENABLED, OpenGLL::GLL_LOCAL, GLLights, i, OpenGLLights::index, newpicked, oldpicked, OpenGLLights::options, and VSFileSystem::vs_fprintf().

Referenced by GFXPushGlobalEffects(), GFXSetLightContext(), and light_rekey_frame().

 {
     for (std::vector< int >::iterator i = newpicked->begin(); i != newpicked->end(); i++) {
         if (*i>=(int)_llights->size()) {
             VSFileSystem::vs_fprintf (stderr,"GFXLIGHT FAILURE %d is beyond array of size %d",(int)*i,(int)_llights->size());
         }
         if (GLLights[(*_llights)[*i].Target()].index != *i) {
             VSFileSystem::vs_fprintf (stderr,"GFXLIGHT uh oh");
             (*_llights)[*i].Target() = -1;
             continue;             //a lengthy operation... Since picked lights may have been smashed
         }
         int targ = (*_llights)[*i].Target();
         if (GLLights[targ].options&OpenGLL::GL_ENABLED) {
             glDisable( GL_LIGHT0+targ );
             GLLights[targ].options   = OpenGLL::GLL_LOCAL;
             GLLights[targ].index     = -1;
             (*_llights)[*i].Target() = -1;               //unref
         }
     }
     newpicked->clear();
     oldpicked->clear();
 }