ARB_shader_storage_buffer_object seems to be done now.

That binding function is not needed as I would deprecate it anyway.

doc/opengl-support.dox

@@ -185,7 +185,7 @@ GLSL 4.30                                   | done
 @extension{ARB,program_interface_query}     | |
 @extension{ARB,robust_buffer_access_behavior} | done (nothing to do)
 @extension{ARB,shader_image_size}           | done (shading language only)
-@extension{ARB,shader_storage_buffer_object} | only limit queries
+@extension{ARB,shader_storage_buffer_object} | missing (unneeded) block binding
 @extension{ARB,stencil_texturing}           | done
 @extension{ARB,texture_buffer_range}        | done
 @extension{ARB,texture_query_levels}        | done (shading language only)

src/Magnum/AbstractShaderProgram.h

@@ -289,6 +289,27 @@ setUniformBlockBinding(uniformBlockIndex("material"), 1);
 @requires_gles Explicit uniform block binding is not supported in WebGL. Use
     @ref uniformBlockIndex() and @ref setUniformBlockBinding() instead.
 
+@anchor AbstractShaderProgram-shader-storage-block-binding
+### Shader storage block bindings
+
+The workflow is to specify shader storage block binding directly in the shader
+code, e.g.:
+@code
+// GLSL 4.30 or GLSL ES 3.10
+layout(std430, binding = 0) buffer vertices {
+    vec3 position;
+    vec3 color;
+};
+layout(std430, binding = 1) buffer normals {
+    vec3 normal;
+};
+@endcode
+
+@see @ref Buffer::maxShaderStorageBindings()
+@requires_gl43 Extension @extension{ARB,shader_storage_buffer_object}
+@requires_gles31 Shader storage is not available in OpenGL ES 3.0 and older.
+@requires_gles Shader storage is not available in WebGL.
+
 @anchor AbstractShaderProgram-texture-units
 ### Specifying texture binding units