diff --git a/common/bspfile.cc b/common/bspfile.cc
index 4c8e02ef..9864290b 100644
--- a/common/bspfile.cc
+++ b/common/bspfile.cc
@@ -325,6 +325,12 @@ public:
         return (flags.native & ~TEX_SPECIAL) == 0;
     }
 
+    bool surfflags_may_phong(const surfflags_t &a, const surfflags_t &b) const override
+    {
+        return (a.native & TEX_SPECIAL)
+            == (b.native & TEX_SPECIAL);
+    }
+
     int32_t surfflags_from_string(const std::string_view &str) const override
     {
         if (string_iequals(str, "special")) {
@@ -924,6 +930,17 @@ struct gamedef_q2_t : public gamedef_t
         return true;
     }
 
+    bool surfflags_may_phong(const surfflags_t &a, const surfflags_t &b) const override
+    {
+        // these are the bits we'll require to match in order to allow phonging `a` and `b`
+        auto mask = [](const surfflags_t &flags) {
+            return flags.native & (Q2_SURF_SKY | Q2_SURF_WARP | Q2_SURF_TRANS33 |
+                                   Q2_SURF_TRANS66 | Q2_SURF_FLOWING | Q2_SURF_NODRAW);
+        };
+
+        return mask(a) == mask(b);
+    }
+
     static constexpr const char *surf_bitflag_names[] = {
         "LIGHT", "SLICK", "SKY", "WARP", "TRANS33", "TRANS66", "FLOWING", "NODRAW",
         "HINT", "512", "1024", "2048", "4096", "8192", "16384", "32768", "65536",
diff --git a/include/common/bspfile.hh b/include/common/bspfile.hh
index 5e458ef2..dc0f915c 100644
--- a/include/common/bspfile.hh
+++ b/include/common/bspfile.hh
@@ -264,6 +264,11 @@ struct gamedef_t
     virtual bool surf_is_lightmapped(const surfflags_t &flags) const = 0;
     virtual bool surf_is_subdivided(const surfflags_t &flags) const = 0;
     virtual bool surfflags_are_valid(const surfflags_t &flags) const = 0;
+    /**
+     * We block certain surface flag combinations from ever smoothing together
+     * e.g. warping and non-warping
+     */
+    virtual bool surfflags_may_phong(const surfflags_t &a, const surfflags_t &b) const = 0;
     virtual int32_t surfflags_from_string(const std::string_view &str) const = 0;
     // FIXME: fix so that we don't have to pass a name here
     virtual bool texinfo_is_hintskip(const surfflags_t &flags, const std::string &name) const = 0;
diff --git a/light/phong.cc b/light/phong.cc
index e9d793ef..dbb0b7c4 100644
--- a/light/phong.cc
+++ b/light/phong.cc
@@ -473,6 +473,7 @@ void CalculateVertexNormals(const mbsp_t *bsp)
         }
 
         // Q1 phong angle stuff
+        auto *f_texinfo = Face_Texinfo(bsp, &f);
         const auto f_points = GLM_FacePoints(bsp, &f);
         const qvec3d f_norm = Face_Normal(bsp, &f);
         const qplane3d f_plane = Face_Plane(bsp, &f);
@@ -506,6 +507,14 @@ void CalculateVertexNormals(const mbsp_t *bsp)
                 if (!f2_wants_phong)
                     continue;
 
+                auto *f2_texinfo = Face_Texinfo(bsp, f2);
+                if (f2_texinfo != nullptr && f_texinfo != nullptr) {
+                    if (!bsp->loadversion->game->surfflags_may_phong(f_texinfo->flags, f2_texinfo->flags)) {
+                        // phong may be blocked by the gamedef, e.g. warping and non-warping never phong
+                        continue;
+                    }
+                }
+
                 const auto f2_points = GLM_FacePoints(bsp, f2);
                 const qvec3f f2_centroid = qv::PolyCentroid(f2_points.begin(), f2_points.end());
                 const qvec3d f2_norm = Face_Normal(bsp, f2);
diff --git a/testmaps/q2_phong_doesnt_cross_contents.map b/testmaps/q2_phong_doesnt_cross_contents.map
new file mode 100644
index 00000000..756d5ab3
--- /dev/null
+++ b/testmaps/q2_phong_doesnt_cross_contents.map
@@ -0,0 +1,173 @@
+// Game: Quake 2
+// Format: Quake2 (Valve)
+// entity 0
+{
+"mapversion" "220"
+"classname" "worldspawn"
+"_tb_textures" "textures/e1u1"
+"_phong" "1"
+// brush 0
+{
+( 368 64 112 ) ( 368 -64 112 ) ( 368 64 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 384 -64 -16 ) ( 368 -64 -16 ) ( 384 -64 112 ) e1u1/c_met11_2 [ 1 0 0 -64 ] [ 0 0 -1 0 ] 0 1 1
+( 384 64 -16 ) ( 368 64 -16 ) ( 384 -64 -16 ) e1u1/c_met11_2 [ 1 0 0 -64 ] [ 0 -1 0 0 ] 0 1 1
+( 384 -64 272 ) ( 368 -64 272 ) ( 384 64 272 ) e1u1/c_met11_2 [ 1 0 0 -64 ] [ 0 -1 0 0 ] 0 1 1
+( 384 224 112 ) ( 368 224 112 ) ( 384 224 -16 ) e1u1/c_met11_2 [ 1 0 0 -64 ] [ 0 0 -1 0 ] 0 1 1
+( 384 -64 112 ) ( 384 64 112 ) ( 384 -64 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 1
+{
+( -496 112 -16 ) ( -496 240 -16 ) ( -496 112 112 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -496 -48 112 ) ( -480 -48 112 ) ( -496 -48 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -496 112 -16 ) ( -480 112 -16 ) ( -496 240 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -496 240 272 ) ( -480 240 272 ) ( -496 112 272 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -496 240 -16 ) ( -480 240 -16 ) ( -496 240 112 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -480 112 -16 ) ( -480 112 112 ) ( -480 240 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 2
+{
+( -480 240 112 ) ( -480 224 112 ) ( -480 240 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -384 224 112 ) ( -384 224 -16 ) ( -480 224 112 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -480 240 -16 ) ( -480 224 -16 ) ( -384 240 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -384 240 272 ) ( -384 224 272 ) ( -480 240 272 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -384 240 112 ) ( -480 240 112 ) ( -384 240 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 384 240 -16 ) ( 384 224 -16 ) ( 384 240 112 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 3
+{
+( -480 -64 -16 ) ( -480 -48 -16 ) ( -480 -64 112 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 48 -64 -16 ) ( -48 -64 -16 ) ( 48 -64 112 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 48 -64 -16 ) ( 48 -48 -16 ) ( -48 -64 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -48 -64 272 ) ( -48 -48 272 ) ( 48 -64 272 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -48 -48 -16 ) ( 48 -48 -16 ) ( -48 -48 112 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 384 -64 112 ) ( 384 -48 112 ) ( 384 -64 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 4
+{
+( -480 -48 288 ) ( -480 -48 272 ) ( -480 48 288 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 48 -48 288 ) ( 48 -48 272 ) ( -48 -48 288 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 48 48 272 ) ( -48 48 272 ) ( 48 -48 272 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 48 48 288 ) ( 48 -48 288 ) ( -48 48 288 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -48 224 288 ) ( -48 224 272 ) ( 48 224 288 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 384 48 288 ) ( 384 48 272 ) ( 384 -48 288 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 5
+{
+( -480 48 -16 ) ( -480 48 0 ) ( -480 -48 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -48 -48 -16 ) ( -48 -48 0 ) ( 48 -48 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -48 48 -16 ) ( -48 -48 -16 ) ( 48 48 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( -48 -48 0 ) ( -48 48 0 ) ( 48 -48 0 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 -1 0 0 ] 0 1 1
+( 48 224 -16 ) ( 48 224 0 ) ( -48 224 -16 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 384 -48 -16 ) ( 384 -48 0 ) ( 384 48 -16 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 6
+{
+( -368 0 -144 ) ( -368 1 -144 ) ( -368 0 -140 ) e1u1/brwater [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1 32 24 0
+( -336 -48 -144 ) ( -336 -48 -140 ) ( -335 -48 -144 ) e1u1/brwater [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1 32 24 0
+( -336 0 0 ) ( -335 0 0 ) ( -336 1 0 ) e1u1/brwater [ -1 0 0 -16 ] [ 0 -1 0 0 ] 0 1 1 32 24 0
+( -144 192 48 ) ( -144 193 48 ) ( -143 192 48 ) e1u1/brwater [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1 32 24 0
+( -144 220 -80 ) ( -143 220 -80 ) ( -144 220 -76 ) e1u1/brwater [ -1 0 0 -16 ] [ 0 0 -1 0 ] 0 1 1 32 24 0
+( -256 192 -80 ) ( -256 192 -76 ) ( -256 193 -80 ) e1u1/brwater [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1 32 24 0
+}
+// brush 7
+{
+( -368 220 128 ) ( -368 144 36.36363636364695 ) ( -368 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -368 144 36.36363636364695 ) ( -144 144 36.36363636364695 ) ( -144 144 0 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -368 220 128 ) ( -144 220 128 ) ( -144 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -144 144 0 ) ( -144 220 0 ) ( -368 220 0 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1
+( -144 220 0 ) ( -144 220 128 ) ( -368 220 128 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -256 144 36.36363636364695 ) ( -256 220 128 ) ( -256 220 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 8
+{
+( -368 144 0 ) ( -368 144 36.36363636364695 ) ( -368 77.33333333330674 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -144 77.33333333330684 0 ) ( -144 144 0 ) ( -368 144 0 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1
+( -144 144 0 ) ( -144 144 36.36363636364689 ) ( -368 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -144 77.33333333330684 0 ) ( -368 77.33333333330674 0 ) ( -368 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1
+( -256 77.33333333330684 0 ) ( -256 144 36.36363636364689 ) ( -256 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 9
+{
+( -240 220 128 ) ( -240 144 36.36363636364695 ) ( -240 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -240 144 36.36363636364695 ) ( -16 144 36.36363636364695 ) ( -16 144 0 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -240 220 128 ) ( -16 220 128 ) ( -16 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -16 144 0 ) ( -16 220 0 ) ( -240 220 0 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1
+( -16 220 0 ) ( -16 220 128 ) ( -240 220 128 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -128 144 36.36363636364695 ) ( -128 220 128 ) ( -128 220 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 10
+{
+( -240 144 0 ) ( -240 144 36.36363636364695 ) ( -240 77.33333333330674 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -16 77.33333333330684 0 ) ( -16 144 0 ) ( -240 144 0 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1
+( -16 144 0 ) ( -16 144 36.36363636364689 ) ( -240 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 0 -1 0 ] 0 1 1
+( -16 77.33333333330684 0 ) ( -240 77.33333333330674 0 ) ( -240 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 16 ] [ 0 -1 0 0 ] 0 1 1
+( -128 77.33333333330684 0 ) ( -128 144 36.36363636364689 ) ( -128 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 11
+{
+( -112 220 128 ) ( -112 144 36.36363636364695 ) ( -112 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -112 144 36.36363636364695 ) ( 112 144 36.36363636364695 ) ( 112 144 0 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( -112 220 128 ) ( 112 220 128 ) ( 112 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 112 144 0 ) ( 112 220 0 ) ( -112 220 0 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 -1 0 0 ] 0 1 1
+( 112 220 0 ) ( 112 220 128 ) ( -112 220 128 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 0 144 36.36363636364695 ) ( 0 220 128 ) ( 0 220 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 12
+{
+( -112 144 0 ) ( -112 144 36.36363636364695 ) ( -112 77.33333333330674 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 112 77.33333333330684 0 ) ( 112 144 0 ) ( -112 144 0 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 -1 0 0 ] 0 1 1
+( 112 144 0 ) ( 112 144 36.36363636364689 ) ( -112 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 112 77.33333333330684 0 ) ( -112 77.33333333330674 0 ) ( -112 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 -1 0 0 ] 0 1 1
+( 0 77.33333333330684 0 ) ( 0 144 36.36363636364689 ) ( 0 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 13
+{
+( -112 0 -144 ) ( -112 1 -144 ) ( -112 0 -140 ) e1u1/brwater [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1 32 0 0
+( -80 -48 -144 ) ( -80 -48 -140 ) ( -79 -48 -144 ) e1u1/brwater [ 1 0 0 -48 ] [ 0 0 -1 0 ] 0 1 1 32 0 0
+( -80 0 0 ) ( -79 0 0 ) ( -80 1 0 ) e1u1/brwater [ -1 0 0 48 ] [ 0 -1 0 0 ] 0 1 1 32 0 0
+( 112 192 48 ) ( 112 193 48 ) ( 113 192 48 ) e1u1/brwater [ 1 0 0 -48 ] [ 0 -1 0 0 ] 0 1 1 32 0 0
+( 112 220 -80 ) ( 113 220 -80 ) ( 112 220 -76 ) e1u1/brwater [ -1 0 0 48 ] [ 0 0 -1 0 ] 0 1 1 32 0 0
+( 0 192 -80 ) ( 0 192 -76 ) ( 0 193 -80 ) e1u1/brwater [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1 32 0 0
+}
+// brush 14
+{
+( 16 144 0 ) ( 16 144 36.36363636364695 ) ( 16 77.33333333330674 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 240 77.33333333330684 0 ) ( 240 144 0 ) ( 16 144 0 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 -1 0 0 ] 0 1 1
+( 240 144 0 ) ( 240 144 36.36363636364689 ) ( 16 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 240 77.33333333330684 0 ) ( 16 77.33333333330674 0 ) ( 16 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 -1 0 0 ] 0 1 1
+( 128 77.33333333330684 0 ) ( 128 144 36.36363636364689 ) ( 128 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 15
+{
+( 16 220 128 ) ( 16 144 36.36363636364695 ) ( 16 144 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 16 144 36.36363636364695 ) ( 240 144 36.36363636364695 ) ( 240 144 0 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 16 220 128 ) ( 240 220 128 ) ( 240 144 36.36363636364695 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 240 144 0 ) ( 240 220 0 ) ( 16 220 0 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 -1 0 0 ] 0 1 1
+( 240 220 0 ) ( 240 220 128 ) ( 16 220 128 ) e1u1/c_met11_2 [ 1 0 0 -112 ] [ 0 0 -1 0 ] 0 1 1
+( 128 144 36.36363636364695 ) ( 128 220 128 ) ( 128 220 0 ) e1u1/c_met11_2 [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1
+}
+// brush 16
+{
+( 16 0 -144 ) ( 16 1 -144 ) ( 16 0 -140 ) e1u1/brwater [ 0 -1 0 0 ] [ 0 0 -1 0 ] 0 1 1 32 0 100
+( 48 -48 -144 ) ( 48 -48 -140 ) ( 49 -48 -144 ) e1u1/brwater [ 1 0 0 -48 ] [ 0 0 -1 0 ] 0 1 1 32 0 100
+( 48 0 0 ) ( 49 0 0 ) ( 48 1 0 ) e1u1/brwater [ -1 0 0 48 ] [ 0 -1 0 0 ] 0 1 1 32 0 100
+( 240 192 48 ) ( 240 193 48 ) ( 241 192 48 ) e1u1/brwater [ 1 0 0 -48 ] [ 0 -1 0 0 ] 0 1 1 32 0 100
+( 240 220 -80 ) ( 241 220 -80 ) ( 240 220 -76 ) e1u1/brwater [ -1 0 0 48 ] [ 0 0 -1 0 ] 0 1 1 32 0 100
+( 128 192 -80 ) ( 128 192 -76 ) ( 128 193 -80 ) e1u1/brwater [ 0 1 0 0 ] [ 0 0 -1 0 ] 0 1 1 32 0 100
+}
+// brush 17
+{
+( -480 -64 64 ) ( -480 -63 64 ) ( -480 -64 65 ) e1u1/c_met11_2 [ 0 1.0000000000000002 0 -80 ] [ 0 0 -1.0000000000000002 0 ] 0 1 1
+( -1024 -48 64 ) ( -1024 -48 65 ) ( -1023 -48 64 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( -1024 -64 92 ) ( -1023 -64 92 ) ( -1024 -63 92 ) e1u1/c_met11_2 [ 1.0000000000000002 0 0 0 ] [ 0 -1.0000000000000002 0 -112 ] 0 1 1
+( 224 -32 96 ) ( 224 -31 96 ) ( 225 -32 96 ) e1u1/c_met11_2 [ 1.0000000000000002 0 0 0 ] [ 0 1.0000000000000002 0 -48 ] 0 1 1
+( 224 -8 96 ) ( 225 -8 96 ) ( 224 -8 97 ) e1u1/c_met11_2 [ 1 0 0 0 ] [ 0 0 -1 0 ] 0 1 1
+( 224 -32 96 ) ( 224 -32 97 ) ( 224 -31 96 ) e1u1/c_met11_2 [ 0 -1.0000000000000002 0 48 ] [ 0 0 -1.0000000000000002 0 ] 0 1 1
+}
+}
+// entity 1
+{
+"classname" "info_player_start"
+"origin" "188.686 -28.4041 120"
+"angle" "165"
+}
diff --git a/tests/test_ltface.cc b/tests/test_ltface.cc
index e32b3b83..ffa482a0 100644
--- a/tests/test_ltface.cc
+++ b/tests/test_ltface.cc
@@ -169,3 +169,7 @@ TEST_CASE("emissive lights") {
         }
     }
 }
+
+TEST_CASE("q2_phong_doesnt_cross_contents") {
+    auto [bsp, bspx] = LoadTestmap("q2_phong_doesnt_cross_contents.map", {"-wrnormals"});
+}