Add some jitter to sun sampling to antialias shadows.

jdolan · Feb 17, 2024 · 787d994 · 787d994
1 parent 4e0c9e0
commit 787d994
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/tools/quemap/lightmap.c b/src/tools/quemap/lightmap.c
@@ -322,7 +322,7 @@ static void LightmapLuxel_Sun(light_t *light, const lightmap_t *lightmap, luxel_
 
 	for (int32_t i = 0; i < light->num_points; i++) {
 
-		const vec3_t dir = Vec3_Negate(light->points[i]);
+		const vec3_t dir = Vec3_Add(Vec3_Negate(light->points[i]), Vec3_RandomRange(-0.005f, +0.005f));
 		const vec3_t end = Vec3_Fmaf(luxel->origin, MAX_WORLD_DIST, dir);
 
 		const cm_trace_t trace = Light_Trace(luxel->origin, end, lightmap->model->head_node, CONTENTS_SOLID);