diff --git a/include/common/bspfile.hh b/include/common/bspfile.hh
index bacb8642..812655db 100644
--- a/include/common/bspfile.hh
+++ b/include/common/bspfile.hh
@@ -352,6 +352,7 @@ typedef struct {
 #define TEX_PHONG_ANGLE_CONCAVE_SHIFT   45
 #define TEX_PHONG_ANGLE_CONCAVE_MASK    (255ULL << TEX_PHONG_ANGLE_CONCAVE_SHIFT) /* 8 bit value. if non zero, overrides _phong_angle for concave joints. */
 #define TEX_NOBOUNCE  (1ULL << 53)   /* light doesn't bounce off this face */
+#define TEX_NOMINLIGHT (1ULL << 54)   /* opt out of minlight on this face */
 
 // Q2 Texture flags.
 #define    Q2_SURF_LIGHT      0x1        // value will hold the light strength
diff --git a/include/light/light.hh b/include/light/light.hh
index 8e937092..80934f6a 100644
--- a/include/light/light.hh
+++ b/include/light/light.hh
@@ -45,6 +45,9 @@
 #define ANGLE_EPSILON 0.001f
 #define EQUAL_EPSILON 0.001f
 
+// FIXME: use maximum dimension of level
+#define MAX_SKY_DIST 1000000.0f
+
 typedef struct {
     vec3_t color;
     vec3_t direction;
@@ -204,7 +207,6 @@ public:
 
 public:
     lockable_vec_t minlight, shadow, shadowself, shadowworldonly, switchableshadow, switchshadstyle, dirt, phong, phong_angle, alpha;
-    lockable_string_t minlight_exclude;
     lockable_vec3_t minlight_color;
     lockable_bool_t lightignore;
     
@@ -238,7 +240,6 @@ public:
         phong { "phong", 0 },
         phong_angle { "phong_angle", 0 },
         alpha { "alpha", 1.0f },
-        minlight_exclude { "minlight_exclude", "" },
         minlight_color { strings{"minlight_color", "mincolor"}, 255, 255, 255, vec3_transformer_t::NORMALIZE_COLOR_TO_255 },
         lightignore { "lightignore", false }
     {
@@ -248,7 +249,7 @@ public:
     settingsdict_t settings() {
         return {{
             &minlight, &shadow, &shadowself, &shadowworldonly, &switchableshadow, &switchshadstyle, &dirt, &phong, &phong_angle, &alpha,
-            &minlight_exclude, &minlight_color, &lightignore
+            &minlight_color, &lightignore
         }};
     }
 };
diff --git a/include/light/settings.hh b/include/light/settings.hh
index f899d0c0..335a37b6 100644
--- a/include/light/settings.hh
+++ b/include/light/settings.hh
@@ -147,7 +147,8 @@ private:
     
 public:
     bool boolValue() const {
-        return static_cast<bool>(_value);
+        // we use -1 to mean false
+        return intValue() == 1;
     }
     
     int intValue() const {
diff --git a/include/qbsp/qbsp.hh b/include/qbsp/qbsp.hh
index 39a0b341..62d350d4 100644
--- a/include/qbsp/qbsp.hh
+++ b/include/qbsp/qbsp.hh
@@ -141,7 +141,8 @@
 #define TEX_PHONG_ANGLE_CONCAVE_SHIFT   45
 #define TEX_PHONG_ANGLE_CONCAVE_MASK    (255ULL << TEX_PHONG_ANGLE_CONCAVE_SHIFT) /* 8 bit value. if non zero, overrides _phong_angle for concave joints. */
 #define TEX_NOBOUNCE  (1ULL << 53)   /* light doesn't bounce off this face */
-#define TEX_NOEXPAND  (1ULL << 54)   /* don't expand this face for larger clip hulls */
+#define TEX_NOMINLIGHT (1ULL << 54)   /* opt out of minlight on this face */
+#define TEX_NOEXPAND  (1ULL << 55)   /* don't expand this face for larger clip hulls */
 
 /*
  * The quality of the bsp output is highly sensitive to these epsilon values.
diff --git a/light/bounce.cc b/light/bounce.cc
index 0081c62e..d368a148 100644
--- a/light/bounce.cc
+++ b/light/bounce.cc
@@ -328,8 +328,7 @@ MakeBounceLights (const globalconfig_t &cfg, const mbsp_t *bsp)
 {
     logprint("--- MakeBounceLights ---\n");
     
-    const dmodel_t *model = &bsp->dmodels[0];
     make_bounce_lights_args_t args { bsp, &cfg }; //mxd. https://clang.llvm.org/extra/clang-tidy/checks/cppcoreguidelines-pro-type-member-init.html
     
-    RunThreadsOn(model->firstface, model->firstface + model->numfaces, MakeBounceLightsThread, (void *)&args);
+    RunThreadsOn(0, bsp->numfaces, MakeBounceLightsThread, (void *)&args);
 }
diff --git a/light/ltface.cc b/light/ltface.cc
index 9dd8f6af..6ec38c12 100644
--- a/light/ltface.cc
+++ b/light/ltface.cc
@@ -1530,7 +1530,6 @@ static void
 LightFace_Sky(const sun_t *sun, const lightsurf_t *lightsurf, lightmapdict_t *lightmaps)
 {
     const globalconfig_t &cfg = *lightsurf->cfg;
-    const float MAX_SKY_DIST = 65536.0f;
     const modelinfo_t *modelinfo = lightsurf->modelinfo;
     const plane_t *plane = &lightsurf->plane;
 
@@ -1635,11 +1634,11 @@ LightFace_Min(const mbsp_t *bsp, const bsp2_dface_t *face,
     const globalconfig_t &cfg = *lightsurf->cfg;
     const modelinfo_t *modelinfo = lightsurf->modelinfo;
 
-    const char *texname = Face_TextureName(bsp, face);
-    if (texname[0] != '\0' && modelinfo->minlight_exclude.stringValue() == std::string{ texname }) {
-        return; /* this texture is excluded from minlight */
+    const uint64_t extended_flags = extended_texinfo_flags[face->texinfo];
+    if ((extended_flags & TEX_NOMINLIGHT) != 0) {
+        return; /* this face is excluded from minlight */
     }
-    
+
     /* Find a style 0 lightmap */
     lightmap_t *lightmap = Lightmap_ForStyle(lightmaps, 0, lightsurf);
 
diff --git a/light/trace_embree.cc b/light/trace_embree.cc
index 6a0a324f..996f8107 100644
--- a/light/trace_embree.cc
+++ b/light/trace_embree.cc
@@ -37,8 +37,6 @@
 using namespace std;
 using namespace polylib;
 
-static const float MAX_SKY_RAY_DEPTH = 8192.0f;
-
 class sceneinfo {
 public:
     unsigned geomID;
@@ -754,7 +752,7 @@ qboolean Embree_TestSky(const vec3_t start, const vec3_t dirn, const modelinfo_t
     VectorCopy(dirn, dir_normalized);
     VectorNormalize(dir_normalized);
     
-    RTCRay ray = SetupRay(0, start, dir_normalized, MAX_SKY_RAY_DEPTH, self);
+    RTCRay ray = SetupRay(0, start, dir_normalized, MAX_SKY_DIST, self);
     rtcIntersect(scene, ray);
 
     qboolean hit_sky = (ray.geomID == skygeom.geomID);
diff --git a/qbsp/brush.cc b/qbsp/brush.cc
index 82ba4bf5..e40342e8 100644
--- a/qbsp/brush.cc
+++ b/qbsp/brush.cc
@@ -469,7 +469,7 @@ CreateBrushFaces(hullbrush_t *hullbrush, const vec3_t rotate_offset,
 
     // Rotatable objects must have a bounding box big enough to
     // account for all its rotations
-    if (rotate_offset[0] || rotate_offset[1] || rotate_offset[2]) {
+    if (0 /*rotate_offset[0] || rotate_offset[1] || rotate_offset[2]*/) {
         vec_t delta;
 
         delta = fabs(max);
diff --git a/qbsp/map.cc b/qbsp/map.cc
index 860f0d91..9d108db1 100644
--- a/qbsp/map.cc
+++ b/qbsp/map.cc
@@ -310,6 +310,14 @@ FindTexinfoEnt(mtexinfo_t *texinfo, const mapentity_t *entity)
         flags |= TEX_NODIRT;
     if (atoi(ValueForKey(entity, "_bounce")) == -1)
         flags |= TEX_NOBOUNCE;
+    if (atoi(ValueForKey(entity, "_minlight")) == -1)
+        flags |= TEX_NOMINLIGHT;
+
+    const char *excludeTex = ValueForKey(entity, "_minlight_exclude");
+    if (strlen(excludeTex) > 0 && !Q_strcasecmp(texname, excludeTex)) {
+        flags |= TEX_NOMINLIGHT;
+    }
+
     if (shadow == -1)
         flags |= TEX_NOSHADOW;
     if (!Q_strcasecmp("func_detail_illusionary", ValueForKey(entity, "classname"))) {