Added NV_shader_noperspective_interpolation ES3 extension.

doc/opengl-support.dox

@@ -383,6 +383,7 @@ 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,shader_noperspective_interpolation} | done (shading language only)
 @es_extension{NV,polygon_mode}              | done
 @es_extension{OES,depth32}                  | done
 @es_extension{OES,mapbuffer}                | done

src/Magnum/Context.cpp

@@ -291,6 +291,9 @@ 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),
+        #ifndef MAGNUM_TARGET_GLES2
+        _extension(GL,NV,shader_noperspective_interpolation),
+        #endif
         _extension(GL,NV,polygon_mode),
         _extension(GL,OES,depth32),
         _extension(GL,OES,mapbuffer),

src/Magnum/Extensions.h

@@ -379,6 +379,9 @@ namespace GL {
         _extension(GL,NV,shadow_samplers_cube,      GLES200, GLES300) // #147
         #endif
         _extension(GL,NV,texture_border_clamp,      GLES200,    None) // #149
+        #ifndef MAGNUM_TARGET_GLES2
+        _extension(GL,NV,shader_noperspective_interpolation, GLES300, None) // #201
+        #endif
         _extension(GL,NV,polygon_mode,              GLES200,    None) // #238
     } namespace OES {
         #ifdef MAGNUM_TARGET_GLES2

src/MagnumExternal/OpenGL/GLES3/extensions.txt

@@ -40,6 +40,7 @@ extension NV_read_depth                             optional
 extension NV_read_stencil                           optional
 extension NV_read_depth_stencil                     optional
 extension NV_texture_border_clamp                   optional
+extension NV_shader_noperspective_interpolation     optional
 extension NV_polygon_mode                           optional
 extension OES_depth32                               optional
 extension OES_mapbuffer                             optional

src/MagnumExternal/OpenGL/GLES3/flextGL.h

@@ -2144,6 +2144,9 @@ GLAPI FLEXTGL_EXPORT void(APIENTRY *flextglGetnUniformuivKHR)(GLuint, GLint, GLs
 /* GL_NV_texture_border_clamp */
 
 
+/* GL_NV_shader_noperspective_interpolation */
+
+
 /* GL_NV_polygon_mode */
 
 GLAPI FLEXTGL_EXPORT void(APIENTRY *flextglPolygonModeNV)(GLenum, GLenum);

src/MagnumExternal/OpenGL/GLES3/flextGLPlatform.cpp

@@ -280,6 +280,8 @@ void flextGLInit() {
 
     /* GL_NV_texture_border_clamp */
 
+    /* GL_NV_shader_noperspective_interpolation */
+
     /* GL_NV_polygon_mode */
     flextglPolygonModeNV = reinterpret_cast<void(APIENTRY*)(GLenum, GLenum)>(loader.load("glPolygonModeNV"));