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)
{
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 );
}
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]);
totalFactor = 0;
for ( i = 0 ; i < 8 ; i++ ) {
float factor;
mgrid_t *data;
unsigned short *gridPos;
double lat, lng;
vec3_t normal;
factor = 1.0;
gridPos = startGridPos;
for ( j = 0 ; j < 3 ; j++ ) {
if ( i & (1<<j) ) {
factor *= frac[j];
gridPos += gridStep[j];
} 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_LSNONE )
{
continue; // ignore samples in walls
}
totalFactor += factor;
for(j=0;j<MAXLIGHTMAPS;j++)
{
if (data->styles[j] != LS_LSNONE)
{
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);
lat /= 256;
lng /= 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];*/
normal[0] = NewCosTable(lat) * NewSinTable(lng);
normal[1] = NewSinTable(lat) * NewSinTable(lng);
normal[2] = NewCosTable(lng);
VectorMA( direction, factor, normal, direction );
}
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 );
}
/*
=================
R_SetupEntityLightingGrid
=================
*/
static void R_SetupEntityLightingGrid( sceneModel_t *ent ) {
vec3_t lightOrigin;
int pos[3];
int i, j;
byte *gridData;
float frac[3];
int gridStep[3];
vec3_t direction;
float totalFactor;
if ( ent->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->lightingOrigin, lightOrigin );
} else {
VectorCopy( ent->origin, lightOrigin );
}
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 );
assert( tr.world->lightGridData ); // bk010103 - NULL with -nolight maps
// trilerp the light value
gridStep[0] = 8;
gridStep[1] = 8 * tr.world->lightGridBounds[0];
gridStep[2] = 8 * tr.world->lightGridBounds[0] * tr.world->lightGridBounds[1];
gridData = tr.world->lightGridData + pos[0] * gridStep[0]
+ pos[1] * gridStep[1] + pos[2] * gridStep[2];
totalFactor = 0;
for ( i = 0 ; i < 8 ; i++ ) {
float factor;
byte *data;
double lat, lng;
vec3_t normal;
#if idppc
float d0, d1, d2, d3, d4, d5;
#endif
factor = 1.0;
data = gridData;
for ( j = 0 ; j < 3 ; j++ ) {
if ( i & (1<<j) ) {
factor *= frac[j];
data += gridStep[j];
} else {
factor *= (1.0f - frac[j]);
}
}
if ( !(data[0]+data[1]+data[2]) ) {
continue; // ignore samples in walls
}
totalFactor += factor;
#if idppc
d0 = data[0]; d1 = data[1]; d2 = data[2];
d3 = data[3]; d4 = data[4]; d5 = data[5];
ent->ambientLight[0] += factor * d0;
ent->ambientLight[1] += factor * d1;
ent->ambientLight[2] += factor * d2;
ent->directedLight[0] += factor * d3;
ent->directedLight[1] += factor * d4;
ent->directedLight[2] += factor * d5;
#else
ent->ambientLight[0] += factor * data[0];
ent->ambientLight[1] += factor * data[1];
ent->ambientLight[2] += factor * data[2];
ent->directedLight[0] += factor * data[3];
ent->directedLight[1] += factor * data[4];
ent->directedLight[2] += factor * data[5];
#endif
lat = data[7];
lng = data[6];
// lat *= (FUNCTABLE_SIZE/256);
// lng *= (FUNCTABLE_SIZE/256);
lat /= 256;
lng /= 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];*/
normal[0] = NewCosTable(lat) * NewSinTable(lng);
normal[1] = NewSinTable(lat) * NewSinTable(lng);
normal[2] = NewCosTable(lng);
VectorMA( direction, factor, normal, direction );
}
if ( totalFactor > 0 && totalFactor < 0.99 ) {
totalFactor = 1.0f / 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 );
}
