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[scene] Add a leaf component to lights

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Regular leaf number for positional lights, 0 for directional, and ~0 for
ambient.
This commit is contained in:
Bill Currie 2023-07-27 15:50:53 +09:00
parent 2790972cb0
commit 123bf14784
3 changed files with 11 additions and 1 deletions
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1
include/QF/scene/scene.h
View file

@ -52,6 +52,7 @@ enum scene_components {
scene_light,
scene_efrags,
scene_lightstyle,
scene_lightleaf,
scene_lightid,
//FIXME these should probably be private to the sw renderer (and in a

7
libs/scene/light.c
View file

@ -100,17 +100,22 @@ Light_AddLight (lightingdata_t *ldata, const light_t *light, int style)
set_t _pvs = SET_STATIC_INIT (model->brush.visleafs, alloca);
set_t *pvs = &_pvs;
uint32_t leafnum = ~0u;
if (light->position[3]) {
// positional light
mleaf_t *leaf = Mod_PointInLeaf (light->position, &model->brush);
Mod_LeafPVS_set (leaf, &model->brush, 0, pvs);
leafnum = leaf - model->brush.leafs;
} else if (DotProduct (light->direction, light->direction)) {
// directional light (sun)
pvs = ldata->sun_pvs;
leafnum = 0;
} else {
// ambient light
Mod_LeafPVS_set (model->brush.leafs, &model->brush, 0, pvs);
Mod_LeafPVS_set (model->brush.leafs, &model->brush, 0xff, pvs);
}
Ent_SetComponent (ent.id, scene_lightleaf, ent.reg, &leafnum);
efrag_t *efrags = 0;
efrag_t **lastlink = &efrags;
for (auto li = set_first (pvs); li; li = set_next (li)) {

4
libs/scene/scene.c
View file

@ -166,6 +166,10 @@ static const component_t scene_components[scene_comp_count] = {
.size = sizeof (int),
.name = "lightstyle",
},
[scene_lightleaf] = {
.size = sizeof (uint32_t),
.name = "lightleaf",
},
[scene_lightid] = {
.size = sizeof (uint32_t),
.name = "lightid",