diff --git a/doc/opengl-support.dox b/doc/opengl-support.dox
index 0b4fdd65e..5ee15968c 100644
--- a/doc/opengl-support.dox
+++ b/doc/opengl-support.dox
@@ -368,6 +368,7 @@ Extension                                   | Status
 @es_extension2{NV,read_stencil,NV_read_depth_stencil} | done
 @es_extension{NV,read_depth_stencil}        | done
 @es_extension{NV,texture_border_clamp}      | done
+@es_extension{NV,polygon_mode}              | done
 @es_extension{OES,depth32}                  | done
 @es_extension{OES,mapbuffer}                | done
 @es_extension{OES,stencil1}                 | done
diff --git a/src/Magnum/Context.cpp b/src/Magnum/Context.cpp
index c4214d05c..edcc40ab3 100644
--- a/src/Magnum/Context.cpp
+++ b/src/Magnum/Context.cpp
@@ -267,6 +267,7 @@ const std::vector<Extension>& Extension::extensions(Version version) {
         _extension(GL,NV,read_stencil),
         _extension(GL,NV,read_depth_stencil),
         _extension(GL,NV,texture_border_clamp),
+        _extension(GL,NV,polygon_mode),
         _extension(GL,OES,depth32),
         _extension(GL,OES,mapbuffer),
         _extension(GL,OES,stencil1),
diff --git a/src/Magnum/Extensions.h b/src/Magnum/Extensions.h
index 037839f9b..4c57d4bce 100644
--- a/src/Magnum/Extensions.h
+++ b/src/Magnum/Extensions.h
@@ -357,6 +357,7 @@ namespace GL {
         _extension(GL,NV,shadow_samplers_cube,      GLES200, GLES300) // #147
         #endif
         _extension(GL,NV,texture_border_clamp,      GLES200,    None) // #149
+        _extension(GL,NV,polygon_mode,              GLES200,    None) // #238
     } namespace OES {
         #ifdef MAGNUM_TARGET_GLES2
         _extension(GL,OES,depth24,                  GLES200, GLES300) // #24
diff --git a/src/Magnum/Renderer.cpp b/src/Magnum/Renderer.cpp
index 0f3c46e26..9c7bb2b96 100644
--- a/src/Magnum/Renderer.cpp
+++ b/src/Magnum/Renderer.cpp
@@ -81,9 +81,21 @@ void Renderer::setFaceCullingMode(const PolygonFacing mode) {
 void Renderer::setProvokingVertex(const ProvokingVertex mode) {
     glProvokingVertex(GLenum(mode));
 }
+#endif
 
+#ifndef MAGNUM_TARGET_WEBGL
 void Renderer::setPolygonMode(const PolygonMode mode) {
-    glPolygonMode(GL_FRONT_AND_BACK, GLenum(mode));
+    #ifndef CORRADE_TARGET_NACL
+    #ifndef MAGNUM_TARGET_GLES
+    glPolygonMode
+    #else
+    glPolygonModeNV
+    #endif
+        (GL_FRONT_AND_BACK, GLenum(mode));
+    #else
+    static_cast<void>(mode);
+    CORRADE_ASSERT_UNREACHABLE();
+    #endif
 }
 #endif
 
diff --git a/src/Magnum/Renderer.h b/src/Magnum/Renderer.h
index 5b2e3b1cb..d358604f7 100644
--- a/src/Magnum/Renderer.h
+++ b/src/Magnum/Renderer.h
@@ -182,25 +182,37 @@ class MAGNUM_EXPORT Renderer {
              */
             PolygonOffsetFill = GL_POLYGON_OFFSET_FILL,
 
-            #ifndef MAGNUM_TARGET_GLES
+            #ifndef MAGNUM_TARGET_WEBGL
             /**
              * Offset lines
              * @see @ref Feature::PolygonOffsetFill, @ref Feature::PolygonOffsetPoint,
              *      @ref setPolygonOffset()
-             * @requires_gl Only @ref Feature::PolygonOffsetFill is available
-             *      in OpenGL ES and WebGL.
+             * @requires_es_extension Extension @es_extension{NV,polygon_offset}
+             * @requires_gles Only @ref Feature::PolygonOffsetFill is available
+             *      in WebGL.
              */
+            #ifndef MAGNUM_TARGET_GLES
             PolygonOffsetLine = GL_POLYGON_OFFSET_LINE,
+            #else
+            PolygonOffsetLine = GL_POLYGON_OFFSET_LINE_NV,
+            #endif
 
             /**
              * Offset points
              * @see @ref Feature::PolygonOffsetFill, @ref Feature::PolygonOffsetLine,
              *      @ref setPolygonOffset()
-             * @requires_gl Only @ref Feature::PolygonOffsetFill is available
-             *      in OpenGL ES and WebGL.
+             * @requires_es_extension Extension @es_extension{NV,polygon_offset}
+             * @requires_gles Only @ref Feature::PolygonOffsetFill is available
+             *      in WebGL.
              */
+            #ifndef MAGNUM_TARGET_GLES
             PolygonOffsetPoint = GL_POLYGON_OFFSET_POINT,
+            #else
+            PolygonOffsetPoint = GL_POLYGON_OFFSET_POINT_NV,
+            #endif
+            #endif
 
+            #ifndef MAGNUM_TARGET_GLES
             /**
              * Programmable point size. If enabled, the point size is taken
              * from vertex/geometry shader builtin `gl_PointSize`.
@@ -418,31 +430,47 @@ class MAGNUM_EXPORT Renderer {
          * @requires_gl OpenGL ES and WebGL behave always like the default.
          */
         static void setProvokingVertex(ProvokingVertex mode);
+        #endif
 
+        #ifndef MAGNUM_TARGET_WEBGL
         /**
          * @brief Polygon mode
          *
          * @see @ref setPolygonMode()
-         * @requires_gl OpenGL ES and WebGL behaves always like
-         *      @ref PolygonMode::Fill. See @ref Mesh::setPrimitive() for
-         *      possible workaround.
+         * @requires_es_extension Extension @es_extension{NV,polygon_mode}.
+         *      Otherwise behaves always like @ref PolygonMode::Fill. See
+         *      @ref Mesh::setPrimitive() for possible workaround.
+         * @requires_gles WebGL behaves always like @ref PolygonMode::Fill. See
+         *      @ref Mesh::setPrimitive() for possible workaround.
          */
         enum class PolygonMode: GLenum {
             /**
              * Interior of the polygon is filled (default).
              */
+            #ifndef MAGNUM_TARGET_GLES
             Fill = GL_FILL,
+            #else
+            Fill = GL_FILL_NV,
+            #endif
 
             /**
              * Boundary edges are filled. See also @ref setLineWidth().
              */
+            #ifndef MAGNUM_TARGET_GLES
             Line = GL_LINE,
+            #else
+            Line = GL_LINE_NV,
+            #endif
 
             /**
              * Starts of boundary edges are drawn as points. See also
              * @ref setPointSize().
              */
+            #ifndef MAGNUM_TARGET_GLES
             Point = GL_POINT
+            #else
+            Point = GL_POINT_NV
+            #endif
         };
 
         /**
@@ -450,8 +478,11 @@ class MAGNUM_EXPORT Renderer {
          *
          * Initial value is @ref PolygonMode::Fill.
          * @see @fn_gl{PolygonMode}
-         * @requires_gl OpenGL ES and WebGL behaves always like the default.
-         *      See @ref Mesh::setPrimitive() for possible workaround.
+         * @requires_es_extension Extension @es_extension{NV,polygon_mode}.
+         *      Otherwise behaves always like the default. See
+         *      @ref Mesh::setPrimitive() for possible workaround.
+         * @requires_gles WebGL behaves always like the default. See
+         *      @ref Mesh::setPrimitive() for possible workaround.
          */
         static void setPolygonMode(PolygonMode mode);
         #endif
diff --git a/src/MagnumExternal/OpenGL/GLES2/extensions.txt b/src/MagnumExternal/OpenGL/GLES2/extensions.txt
index 82193082c..1d703ee03 100644
--- a/src/MagnumExternal/OpenGL/GLES2/extensions.txt
+++ b/src/MagnumExternal/OpenGL/GLES2/extensions.txt
@@ -66,6 +66,7 @@ extension NV_read_depth                         optional
 extension NV_read_stencil                       optional
 extension NV_read_depth_stencil                 optional
 extension NV_texture_border_clamp               optional
+extension NV_polygon_mode                       optional
 extension OES_depth32                           optional
 extension OES_mapbuffer                         optional
 extension OES_stencil1                          optional
diff --git a/src/MagnumExternal/OpenGL/GLES2/flextGL.cpp b/src/MagnumExternal/OpenGL/GLES2/flextGL.cpp
index bb66db1ed..204dc3c00 100644
--- a/src/MagnumExternal/OpenGL/GLES2/flextGL.cpp
+++ b/src/MagnumExternal/OpenGL/GLES2/flextGL.cpp
@@ -189,6 +189,9 @@ FLEXTGL_EXPORT void(APIENTRY *flextglObjectPtrLabelKHR)(const void *, GLsizei, c
 FLEXTGL_EXPORT void(APIENTRY *flextglGetObjectPtrLabelKHR)(const void *, GLsizei, GLsizei *, GLchar *) = nullptr;
 FLEXTGL_EXPORT void(APIENTRY *flextglGetPointervKHR)(GLenum, void **) = nullptr;
 
+/* GL_NV_polygon_mode */
+FLEXTGL_EXPORT void(APIENTRY *flextglPolygonModeNV)(GLenum, GLenum) = nullptr;
+
 /* GL_OES_mapbuffer */
 FLEXTGL_EXPORT void *(APIENTRY *flextglMapBufferOES)(GLenum, GLenum) = nullptr;
 FLEXTGL_EXPORT GLboolean(APIENTRY *flextglUnmapBufferOES)(GLenum) = nullptr;
diff --git a/src/MagnumExternal/OpenGL/GLES2/flextGL.h b/src/MagnumExternal/OpenGL/GLES2/flextGL.h
index cb0accec1..2801f2ba4 100644
--- a/src/MagnumExternal/OpenGL/GLES2/flextGL.h
+++ b/src/MagnumExternal/OpenGL/GLES2/flextGL.h
@@ -880,6 +880,15 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_TEXTURE_BORDER_COLOR_NV 0x1004
 #define GL_CLAMP_TO_BORDER_NV 0x812D
 
+/* GL_NV_polygon_mode */
+
+#define GL_POLYGON_MODE_NV 0x0B40
+#define GL_POLYGON_OFFSET_POINT_NV 0x2A01
+#define GL_POLYGON_OFFSET_LINE_NV 0x2A02
+#define GL_POINT_NV 0x1B00
+#define GL_LINE_NV 0x1B01
+#define GL_FILL_NV 0x1B02
+
 /* GL_OES_depth32 */
 
 #define GL_DEPTH_COMPONENT32_OES 0x81A7
@@ -1497,6 +1506,11 @@ GLAPI FLEXTGL_EXPORT void(APIENTRY *flextglGetPointervKHR)(GLenum, void **);
 /* GL_NV_texture_border_clamp */
 
 
+/* GL_NV_polygon_mode */
+
+GLAPI FLEXTGL_EXPORT void(APIENTRY *flextglPolygonModeNV)(GLenum, GLenum);
+#define glPolygonModeNV flextglPolygonModeNV
+
 /* GL_OES_depth32 */
 
 
diff --git a/src/MagnumExternal/OpenGL/GLES2/flextGLPlatform.cpp b/src/MagnumExternal/OpenGL/GLES2/flextGLPlatform.cpp
index d82919f1c..7241fdda7 100644
--- a/src/MagnumExternal/OpenGL/GLES2/flextGLPlatform.cpp
+++ b/src/MagnumExternal/OpenGL/GLES2/flextGLPlatform.cpp
@@ -265,6 +265,9 @@ void flextGLInit() {
 
     /* GL_NV_texture_border_clamp */
 
+    /* GL_NV_polygon_mode */
+    flextglPolygonModeNV = reinterpret_cast<void(APIENTRY*)(GLenum, GLenum)>(loader.load("glPolygonModeNV"));
+
     /* GL_OES_depth32 */
 
     /* GL_OES_mapbuffer */
diff --git a/src/MagnumExternal/OpenGL/GLES3/extensions.txt b/src/MagnumExternal/OpenGL/GLES3/extensions.txt
index 41247b237..d8fd27211 100644
--- a/src/MagnumExternal/OpenGL/GLES3/extensions.txt
+++ b/src/MagnumExternal/OpenGL/GLES3/extensions.txt
@@ -21,6 +21,7 @@ extension NV_read_depth                         optional
 extension NV_read_stencil                       optional
 extension NV_read_depth_stencil                 optional
 extension NV_texture_border_clamp               optional
+extension NV_polygon_mode                       optional
 extension OES_depth32                           optional
 extension OES_mapbuffer                         optional
 extension OES_stencil1                          optional
diff --git a/src/MagnumExternal/OpenGL/GLES3/flextGL.cpp b/src/MagnumExternal/OpenGL/GLES3/flextGL.cpp
index 7b922e19d..38410be9e 100644
--- a/src/MagnumExternal/OpenGL/GLES3/flextGL.cpp
+++ b/src/MagnumExternal/OpenGL/GLES3/flextGL.cpp
@@ -183,6 +183,9 @@ FLEXTGL_EXPORT void(APIENTRY *flextglObjectPtrLabelKHR)(const void *, GLsizei, c
 FLEXTGL_EXPORT void(APIENTRY *flextglGetObjectPtrLabelKHR)(const void *, GLsizei, GLsizei *, GLchar *) = nullptr;
 FLEXTGL_EXPORT void(APIENTRY *flextglGetPointervKHR)(GLenum, void **) = nullptr;
 
+/* GL_NV_polygon_mode */
+FLEXTGL_EXPORT void(APIENTRY *flextglPolygonModeNV)(GLenum, GLenum) = nullptr;
+
 /* GL_OES_mapbuffer */
 FLEXTGL_EXPORT void *(APIENTRY *flextglMapBufferOES)(GLenum, GLenum) = nullptr;
 FLEXTGL_EXPORT GLboolean(APIENTRY *flextglUnmapBufferOES)(GLenum) = nullptr;
diff --git a/src/MagnumExternal/OpenGL/GLES3/flextGL.h b/src/MagnumExternal/OpenGL/GLES3/flextGL.h
index 2c9653f97..a4f41d691 100644
--- a/src/MagnumExternal/OpenGL/GLES3/flextGL.h
+++ b/src/MagnumExternal/OpenGL/GLES3/flextGL.h
@@ -1064,6 +1064,15 @@ typedef khronos_ssize_t GLsizeiptr;
 #define GL_TEXTURE_BORDER_COLOR_NV 0x1004
 #define GL_CLAMP_TO_BORDER_NV 0x812D
 
+/* GL_NV_polygon_mode */
+
+#define GL_POLYGON_MODE_NV 0x0B40
+#define GL_POLYGON_OFFSET_POINT_NV 0x2A01
+#define GL_POLYGON_OFFSET_LINE_NV 0x2A02
+#define GL_POINT_NV 0x1B00
+#define GL_LINE_NV 0x1B01
+#define GL_FILL_NV 0x1B02
+
 /* GL_OES_depth32 */
 
 #define GL_DEPTH_COMPONENT32_OES 0x81A7
@@ -1719,6 +1728,11 @@ GLAPI FLEXTGL_EXPORT void(APIENTRY *flextglGetPointervKHR)(GLenum, void **);
 /* GL_NV_texture_border_clamp */
 
 
+/* GL_NV_polygon_mode */
+
+GLAPI FLEXTGL_EXPORT void(APIENTRY *flextglPolygonModeNV)(GLenum, GLenum);
+#define glPolygonModeNV flextglPolygonModeNV
+
 /* GL_OES_depth32 */
 
 
diff --git a/src/MagnumExternal/OpenGL/GLES3/flextGLPlatform.cpp b/src/MagnumExternal/OpenGL/GLES3/flextGLPlatform.cpp
index ffb11853f..b0fd298cd 100644
--- a/src/MagnumExternal/OpenGL/GLES3/flextGLPlatform.cpp
+++ b/src/MagnumExternal/OpenGL/GLES3/flextGLPlatform.cpp
@@ -209,6 +209,9 @@ void flextGLInit() {
 
     /* GL_NV_texture_border_clamp */
 
+    /* GL_NV_polygon_mode */
+    flextglPolygonModeNV = reinterpret_cast<void(APIENTRY*)(GLenum, GLenum)>(loader.load("glPolygonModeNV"));
+
     /* GL_OES_depth32 */
 
     /* GL_OES_mapbuffer */