docs: add nv50 to the ARB_viewport_array list
diff --git a/docs/GL3.txt b/docs/GL3.txt
index 06ce417..542ee28 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -120,7 +120,7 @@
   GL_ARB_separate_shader_objects                       started (Ian Romanick, Gregory Hainaut)
   GL_ARB_shader_precision                              not started
   GL_ARB_vertex_attrib_64bit                           not started
-  GL_ARB_viewport_array                                DONE (i965, r600)
+  GL_ARB_viewport_array                                DONE (i965, nv50, r600)
 
 
 GL 4.2: