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light: MakeSurfaceLight: cull surface light fragments that are in the void

This commit is contained in:
Eric Wasylishen 2023-04-08 16:39:09 -06:00
parent 098ce84d7b
commit 28776464c7
1 changed files with 15 additions and 4 deletions
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19
light/surflight.cc
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@ -77,8 +77,18 @@ static void MakeSurfaceLight(const mbsp_t *bsp, const settings::worldspawn_keys
// Dice winding...
vector<qvec3f> points;
winding.dice(cfg.surflightsubdivision.value(),
[&points, &facenormal](winding_t &w) { points.push_back(w.center() + facenormal); });
size_t points_before_culling = 0;
winding.dice(cfg.surflightsubdivision.value(), [&](winding_t &w) {
++points_before_culling;
qvec3f point = w.center() + facenormal;
// optimization - cull surface lights in the void
if (Light_PointInWorld(bsp, point))
return;
points.push_back(point);
});
// Calculate emit color and intensity...
@ -108,7 +118,8 @@ static void MakeSurfaceLight(const mbsp_t *bsp, const settings::worldspawn_keys
texture_color.value() *= 1.0f / intensity;
// Sanity checks...
Q_assert(!points.empty());
if (points.empty())
return;
// Add surfacelight...
surfacelight_t l;
@ -135,7 +146,7 @@ static void MakeSurfaceLight(const mbsp_t *bsp, const settings::worldspawn_keys
// Store surfacelight settings...
l.totalintensity = intensity * facearea;
l.intensity = l.totalintensity / l.points.size();
l.intensity = l.totalintensity / points_before_culling;
l.color = texture_color.value();
// Store light...