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ref: gl: make R_AddDynamicLights only iterate through actually lit box

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This commit is contained in:
Alibek Omarov
2026-06-30 13:52:47 +05:00
parent b1d9eef896
commit 34467bfe9a
1 changed files with 12 additions and 7 deletions
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19
ref/gl/gl_rsurf.c
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@@ -566,7 +566,7 @@ static texture_t *R_TextureAnimation( msurface_t *s )
R_AddDynamicLights
===============
*/
static void R_AddDynamicLights( const msurface_t *surf )
static void R_AddDynamicLights( const msurface_t *surf, float sample_size, int smax, int tmax )
{
const mextrasurf_t *info = surf->info;
int sample_frac = 1.0;
@@ -575,9 +575,6 @@ static void R_AddDynamicLights( const msurface_t *surf )
if( !surf->dlightbits )
return;
float sample_size = gEngfuncs.Mod_SampleSizeForFace( surf );
int smax = (info->lightextents[0] / sample_size) + 1;
int tmax = (info->lightextents[1] / sample_size) + 1;
mtexinfo_t *tex = surf->texinfo;
if( FBitSet( tex->flags, TEX_WORLD_LUXELS ))
@@ -624,14 +621,22 @@ static void R_AddDynamicLights( const msurface_t *surf )
float sl = DotProduct( impact, info->lmvecs[0] ) + info->lmvecs[0][3] - info->lightmapmins[0];
float tl = DotProduct( impact, info->lmvecs[1] ) + info->lmvecs[1][3] - info->lightmapmins[1];
for( int t = 0; t < tmax; t++ )
// dist >= max( sd, td ), so a luxel can only pass the test below when both
// sd and td are under minlight
float half = ( minlight + 1.0f ) / ( sample_size * sample_frac );
int s0 = Q_max( 0, (int)( sl / sample_size - half ));
int s1 = Q_min( smax - 1, (int)( sl / sample_size + half ));
int t0 = Q_max( 0, (int)( tl / sample_size - half ));
int t1 = Q_min( tmax - 1, (int)( tl / sample_size + half ));
for( int t = t0; t <= t1; t++ )
{
int td = (tl - sample_size * t) * sample_frac;
if( td < 0 )
td = -td;
for( int s = 0; s < smax; s++ )
for( int s = s0; s <= s1; s++ )
{
int sd = (sl - sample_size * s) * sample_frac;
float dist;
@@ -755,7 +760,7 @@ static void R_BuildLightMap( const msurface_t *surf, byte *dest, int stride, qbo
// add all the dynamic lights
if( surf->dlightframe == tr.framecount && dynamic )
R_AddDynamicLights( surf );
R_AddDynamicLights( surf, sample_size, smax, tmax );
for( int t = 0; t < tmax; t++ )
{