diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 4871c0f4..47a04fef 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -735,12 +735,14 @@ GLSL:
   - .glsl
   - .fp
   - .frag
+  - .frg
   - .fshader
   - .geom
   - .glslv
   - .gshader
   - .shader
   - .vert
+  - .vrx
   - .vshader
 
 Genshi:
diff --git a/samples/GLSL/myfragment.frg b/samples/GLSL/myfragment.frg
new file mode 100644
index 00000000..a4e84395
--- /dev/null
+++ b/samples/GLSL/myfragment.frg
@@ -0,0 +1,6 @@
+varying vec4 v_color;
+
+void main()
+{
+	gl_FragColor = v_color;
+}
\ No newline at end of file
diff --git a/samples/GLSL/myvertex.vrx b/samples/GLSL/myvertex.vrx
new file mode 100644
index 00000000..5371affa
--- /dev/null
+++ b/samples/GLSL/myvertex.vrx
@@ -0,0 +1,12 @@
+uniform mat4 u_MVPMatrix;
+
+attribute vec4 a_position;
+attribute vec4 a_color;
+
+varying vec4 v_color;
+
+void main()
+{
+	v_color = a_color;
+	gl_Position =  u_MVPMatrix * pos;
+}
\ No newline at end of file