Replaced EXT_framebuffer_sRGB with ARB_framebuffer_sRGB.

Also seems to have wider support than the EXT version.

doc/opengl-support.dox

@@ -61,13 +61,13 @@ GLSL 1.30                                   | done
 @extension{ARB,texture_rg}                  | done
 @extension{ARB,vertex_array_object}         | done
 @extension{ARB,framebuffer_object}          | done
+@extension{ARB,framebuffer_sRGB}            | |
 @extension{ARB,half_float_vertex}           | done
 @extension{EXT,gpu_shader4}                 | done
 @extension{EXT,packed_float}                | done
 @extension{EXT,texture_array}               | done
 @extension{EXT,texture_compression_rgtc}    | done
 @extension{EXT,texture_shared_exponent}     | done
-@extension{EXT,framebuffer_sRGB}            | |
 @extension{EXT,draw_buffers2}               | |
 @extension{EXT,texture_integer}             | done (GL 3.0 subset)
 @extension{EXT,transform_feedback}          | |

src/Magnum/Context.cpp

@@ -95,13 +95,13 @@ const std::vector<Extension>& Extension::extensions(Version version) {
         _extension(GL,ARB,texture_rg),
         _extension(GL,ARB,vertex_array_object),
         _extension(GL,ARB,framebuffer_object),
+        _extension(GL,ARB,framebuffer_sRGB),
         _extension(GL,ARB,half_float_vertex),
         _extension(GL,EXT,gpu_shader4),
         _extension(GL,EXT,packed_float),
         _extension(GL,EXT,texture_array),
         _extension(GL,EXT,texture_compression_rgtc),
         _extension(GL,EXT,texture_shared_exponent),
-        _extension(GL,EXT,framebuffer_sRGB),
         _extension(GL,EXT,draw_buffers2),
         _extension(GL,EXT,texture_integer),
         _extension(GL,EXT,transform_feedback),

src/Magnum/Extensions.h

@@ -81,6 +81,7 @@ namespace GL {
         _extension(GL,ARB,depth_buffer_float,           GL210, GL300) // #43
         _extension(GL,ARB,draw_instanced,               GL210, GL310) // #44
         _extension(GL,ARB,framebuffer_object,           GL210, GL300) // #45
+        _extension(GL,ARB,framebuffer_sRGB,             GL210, GL300) // #46
         _extension(GL,ARB,geometry_shader4,             GL210, GL320) // #47
         _extension(GL,ARB,half_float_vertex,            GL210, GL300) // #48
         _extension(GL,ARB,instanced_arrays,             GL210, GL330) // #49
@@ -202,7 +203,6 @@ namespace GL {
         _extension(GL,EXT,texture_array,                GL210, GL300) // #329
         _extension(GL,EXT,texture_compression_rgtc,     GL210, GL300) // #332
         _extension(GL,EXT,texture_shared_exponent,      GL210, GL300) // #333
-        _extension(GL,EXT,framebuffer_sRGB,             GL210, GL300) // #337
         _extension(GL,EXT,draw_buffers2,                GL210, GL300) // #340
         _extension(GL,EXT,texture_integer,              GL210, GL300) // #343
         _extension(GL,EXT,transform_feedback,           GL210, GL300) // #352