GL: recognize NV_geometry_shader_passthrough.

doc/changelog.dox

@@ -160,6 +160,7 @@ See also:
     @ref GL::TextureFormat values available also on OpenGL ES 2.0 and WebGL.
     The values were already present in WebGL 2.0 builds by accident before,
     without documenting corresponding extension requirements.
+-   Recognizing the @gl_extension{NV,geometry_shader_passthrough} extension
 -   Added a @ref GL::AbstractTexture::target() getter to simplify interaction
     with raw GL code
 -   Exposed @gl_extension{ARB,buffer_storage} as

doc/opengl-support.dox

@@ -323,6 +323,7 @@ Extension                                   | Status
 @gl_extension{EXT,texture_sRGB_R8}          | done
 @gl_extension{EXT,texture_sRGB_RG8}         | done
 @gl_extension{GREMEDY,string_marker}        | done
+@gl_extension{NV,geometry_shader_passthrough} | done (shading language only)
 @gl_extension{NV,sample_locations}          | |
 @gl_extension{NV,fragment_shader_barycentric} | done (shading language only)
 @gl_extension{OVR,multiview}                | |
@@ -497,6 +498,7 @@ Extension                                   | Status
 @gl_extension{NV,read_depth_stencil}        | done
 @gl_extension{NV,texture_border_clamp}      | done
 @gl_extension{NV,shader_noperspective_interpolation} | done (shading language only)
+@gl_extension{NV,geometry_shader_passthrough} | done (shading language only)
 @gl_extension{NV,sample_locations}          | |
 @gl_extension{NV,polygon_mode}              | done
 @gl_extension{OES,depth32}                  | done

src/Magnum/GL/Context.cpp

@@ -112,6 +112,7 @@ constexpr Extension ExtensionList[]{
     Extensions::KHR::texture_compression_astc_sliced_3d{},
     Extensions::NV::depth_buffer_float{},
     Extensions::NV::fragment_shader_barycentric{},
+    Extensions::NV::geometry_shader_passthrough{},
     Extensions::NV::sample_locations{},
     Extensions::OVR::multiview{},
     Extensions::OVR::multiview2{}
@@ -415,6 +416,9 @@ constexpr Extension ExtensionList[]{
     #ifndef MAGNUM_TARGET_GLES2
     Extensions::NV::fragment_shader_barycentric{},
     #endif
+    #ifndef MAGNUM_TARGET_GLES2
+    Extensions::NV::geometry_shader_passthrough{},
+    #endif
     Extensions::NV::polygon_mode{},
     Extensions::NV::read_buffer_front{},
     Extensions::NV::read_depth{},

src/Magnum/GL/Extensions.h

@@ -264,8 +264,9 @@ namespace AMD {
     _extension(176,NV,depth_buffer_float,               GL210,  None) // #334
     _extension(177,NV,conditional_render,               GL210, GL300) // #346
     /* NV_draw_texture not supported */                               // #430
-    _extension(178,NV,sample_locations,                 GL210,  None) // #472
-    _extension(179,NV,fragment_shader_barycentric,      GL450,  None) // #526
+    _extension(178,NV,geometry_shader_passthrough,      GL330,  None) // #470
+    _extension(179,NV,sample_locations,                 GL210,  None) // #472
+    _extension(180,NV,fragment_shader_barycentric,      GL450,  None) // #526
 } namespace OVR {
     _extension(185,OVR,multiview,                       GL300,  None) // #478
     _extension(186,OVR,multiview2,                      GL300,  None) // #479
@@ -532,10 +533,13 @@ namespace ANDROID {
     #ifndef MAGNUM_TARGET_GLES2
     _extension(115,NV,shader_noperspective_interpolation, GLES300, None) // #201
     #endif
-    _extension(116,NV,sample_locations,             GLES200,    None) // #235
-    _extension(117,NV,polygon_mode,                 GLES200,    None) // #238
     #ifndef MAGNUM_TARGET_GLES2
-    _extension(118,NV,fragment_shader_barycentric,  GLES320,    None) // #316
+    _extension(116,NV,geometry_shader_passthrough,  GLES300,    None) // #233
+    #endif
+    _extension(117,NV,sample_locations,             GLES200,    None) // #235
+    _extension(118,NV,polygon_mode,                 GLES200,    None) // #238
+    #ifndef MAGNUM_TARGET_GLES2
+    _extension(119,NV,fragment_shader_barycentric,  GLES320,    None) // #316
     #endif
 } namespace OES {
     #ifdef MAGNUM_TARGET_GLES2