/*
=====================
RE_AddLightToScene
=====================
*/
void RE_AddLightToScene( const vec3_t org, float intensity, float r, float g, float b, int overdraw ) {
dlight_t *dl;
if ( !tr.registered ) {
return;
}
if ( r_numdlights >= MAX_DLIGHTS ) {
return;
}
if ( intensity <= 0 ) {
return;
}
// these cards don't have the correct blend mode
if ( glConfig.hardwareType == GLHW_RIVA128 || glConfig.hardwareType == GLHW_PERMEDIA2 ) {
return;
}
// RF, allow us to force some dlights under all circumstances
if ( !( overdraw & REF_FORCE_DLIGHT ) ) {
if ( r_dynamiclight->integer == 0 ) {
return;
}
if ( r_dynamiclight->integer == 2 && !( backEndData[tr.smpFrame]->dlights[r_numdlights].forced ) ) {
return;
}
}
overdraw &= ~REF_FORCE_DLIGHT;
overdraw &= ~REF_JUNIOR_DLIGHT; //----(SA) added
dl = &backEndData[tr.smpFrame]->dlights[r_numdlights++];
VectorCopy( org, dl->origin );
dl->radius = intensity;
dl->color[0] = r;
dl->color[1] = g;
dl->color[2] = b;
dl->dlshader = NULL;
dl->overdraw = 0;
if ( overdraw == 10 ) { // sorry, hijacking 10 for a quick hack (SA)
dl->dlshader = R_GetShaderByHandle( RE_RegisterShader( "negdlightshader" ) );
} else if ( overdraw == 11 ) { // 11 is flames
dl->dlshader = R_GetShaderByHandle( RE_RegisterShader( "flamedlightshader" ) );
} else {
dl->overdraw = overdraw;
}
}
qhandle_t R_GetShaderByNum(int shaderNum, world_t &worldData)
{
qhandle_t shader;
if ( (shaderNum < 0) || (shaderNum >= worldData.numShaders) )
{
Com_Printf( "Warning: Bad index for R_GetShaderByNum - %i", shaderNum );
return(0);
}
shader = RE_RegisterShader(worldData.shaders[ shaderNum ].shader);
return(shader);
}
void R_SetupEntityLightingGrid( trRefEntity_t *ent ) {
#else
static void R_SetupEntityLightingGrid( trRefEntity_t *ent ) {
#endif
vec3_t lightOrigin;
int pos[3];
int i, j;
float frac[3];
int gridStep[3];
vec3_t direction;
float totalFactor;
unsigned short *startGridPos;
if (r_fullbright->integer || (tr.refdef.rdflags & RDF_doLAGoggles) )
{
ent->ambientLight[0] = ent->ambientLight[1] = ent->ambientLight[2] = 255.0;
ent->directedLight[0] = ent->directedLight[1] = ent->directedLight[2] = 255.0;
VectorCopy( tr.sunDirection, ent->lightDir );
return;
}
if ( ent->e.renderfx & RF_LIGHTING_ORIGIN ) {
// seperate lightOrigins are needed so an object that is
// sinking into the ground can still be lit, and so
// multi-part models can be lit identically
VectorCopy( ent->e.lightingOrigin, lightOrigin );
} else {
VectorCopy( ent->e.origin, lightOrigin );
}
#define ACCURATE_LIGHTGRID_SAMPLING 1
#if ACCURATE_LIGHTGRID_SAMPLING
vec3_t startLightOrigin;
VectorCopy( lightOrigin, startLightOrigin );
#endif
VectorSubtract( lightOrigin, tr.world->lightGridOrigin, lightOrigin );
for ( i = 0 ; i < 3 ; i++ ) {
float v;
v = lightOrigin[i]*tr.world->lightGridInverseSize[i];
pos[i] = floor( v );
frac[i] = v - pos[i];
if ( pos[i] < 0 ) {
pos[i] = 0;
} else if ( pos[i] >= tr.world->lightGridBounds[i] - 1 ) {
pos[i] = tr.world->lightGridBounds[i] - 1;
}
}
VectorClear( ent->ambientLight );
VectorClear( ent->directedLight );
VectorClear( direction );
// trilerp the light value
gridStep[0] = 1;
gridStep[1] = tr.world->lightGridBounds[0];
gridStep[2] = tr.world->lightGridBounds[0] * tr.world->lightGridBounds[1];
startGridPos = tr.world->lightGridArray + pos[0] * gridStep[0]
+ pos[1] * gridStep[1] + pos[2] * gridStep[2];
#if ACCURATE_LIGHTGRID_SAMPLING
vec3_t startGridOrg;
VectorCopy( tr.world->lightGridOrigin, startGridOrg );
startGridOrg[0] += pos[0] * tr.world->lightGridSize[0];
startGridOrg[1] += pos[1] * tr.world->lightGridSize[1];
startGridOrg[2] += pos[2] * tr.world->lightGridSize[2];
#endif
totalFactor = 0;
for ( i = 0 ; i < 8 ; i++ ) {
float factor;
mgrid_t *data;
unsigned short *gridPos;
int lat, lng;
vec3_t normal;
#if ACCURATE_LIGHTGRID_SAMPLING
vec3_t gridOrg;
VectorCopy( startGridOrg, gridOrg );
#endif
factor = 1.0;
gridPos = startGridPos;
for ( j = 0 ; j < 3 ; j++ ) {
if ( i & (1<<j) ) {
factor *= frac[j];
gridPos += gridStep[j];
#if ACCURATE_LIGHTGRID_SAMPLING
gridOrg[j] += tr.world->lightGridSize[j];
#endif
} else {
factor *= (1.0 - frac[j]);
}
}
if (gridPos >= tr.world->lightGridArray + tr.world->numGridArrayElements)
{//we've gone off the array somehow
continue;
}
data = tr.world->lightGridData + *gridPos;
if ( data->styles[0] == LS_NONE )
{
continue; // ignore samples in walls
}
#if 0
if ( !SV_inPVS( startLightOrigin, gridOrg ) )
{
continue;
}
#endif
totalFactor += factor;
for(j=0;j<MAXLIGHTMAPS;j++)
{
if (data->styles[j] != LS_NONE)
{
const byte style= data->styles[j];
ent->ambientLight[0] += factor * data->ambientLight[j][0] * styleColors[style][0] / 255.0f;
ent->ambientLight[1] += factor * data->ambientLight[j][1] * styleColors[style][1] / 255.0f;
ent->ambientLight[2] += factor * data->ambientLight[j][2] * styleColors[style][2] / 255.0f;
ent->directedLight[0] += factor * data->directLight[j][0] * styleColors[style][0] / 255.0f;
ent->directedLight[1] += factor * data->directLight[j][1] * styleColors[style][1] / 255.0f;
ent->directedLight[2] += factor * data->directLight[j][2] * styleColors[style][2] / 255.0f;
}
else
{
break;
}
}
lat = data->latLong[1];
lng = data->latLong[0];
lat *= (FUNCTABLE_SIZE/256);
lng *= (FUNCTABLE_SIZE/256);
// decode X as cos( lat ) * sin( long )
// decode Y as sin( lat ) * sin( long )
// decode Z as cos( long )
normal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
normal[1] = tr.sinTable[lat] * tr.sinTable[lng];
normal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
VectorMA( direction, factor, normal, direction );
#if ACCURATE_LIGHTGRID_SAMPLING
if ( r_debugLight->integer && ent->e.hModel == -1 )
{
//draw
refEntity_t refEnt;
refEnt.hModel = 0;
refEnt.ghoul2 = NULL;
refEnt.renderfx = 0;
VectorCopy( gridOrg, refEnt.origin );
vectoangles( normal, refEnt.angles );
AnglesToAxis( refEnt.angles, refEnt.axis );
refEnt.reType = RT_MODEL;
RE_AddRefEntityToScene( &refEnt );
refEnt.renderfx = RF_DEPTHHACK;
refEnt.reType = RT_SPRITE;
refEnt.customShader = RE_RegisterShader( "gfx/misc/debugAmbient" );
refEnt.shaderRGBA[0] = data->ambientLight[0][0];
refEnt.shaderRGBA[1] = data->ambientLight[0][1];
refEnt.shaderRGBA[2] = data->ambientLight[0][2];
refEnt.shaderRGBA[3] = 255;
refEnt.radius = factor*50+2.0f; // maybe always give it a minimum size?
refEnt.rotation = 0; // don't let the sprite wobble around
RE_AddRefEntityToScene( &refEnt );
refEnt.reType = RT_LINE;
refEnt.customShader = RE_RegisterShader( "gfx/misc/debugArrow" );
refEnt.shaderRGBA[0] = data->directLight[0][0];
refEnt.shaderRGBA[1] = data->directLight[0][1];
refEnt.shaderRGBA[2] = data->directLight[0][2];
refEnt.shaderRGBA[3] = 255;
VectorCopy( refEnt.origin, refEnt.oldorigin );
VectorMA( gridOrg, (factor*-255) - 2.0f, normal, refEnt.origin ); // maybe always give it a minimum length
refEnt.radius = 1.5f;
RE_AddRefEntityToScene( &refEnt );
}
#endif
}
if ( totalFactor > 0 && totalFactor < 0.99 )
{
totalFactor = 1.0 / totalFactor;
VectorScale( ent->ambientLight, totalFactor, ent->ambientLight );
VectorScale( ent->directedLight, totalFactor, ent->directedLight );
}
VectorScale( ent->ambientLight, r_ambientScale->value, ent->ambientLight );
VectorScale( ent->directedLight, r_directedScale->value, ent->directedLight );
VectorNormalize2( direction, ent->lightDir );
}
