Add support for filtering WebGL extensions based on WebGL version

1 files changed, 11 insertions, 0 deletions

diff --git a/components/script/dom/webgl_extensions/extension.rs b/components/script/dom/webgl_extensions/extension.rs
index 6b4a2815347..1f8c770aaa3 100644
--- a/components/script/dom/webgl_extensions/extension.rs
+++ b/components/script/dom/webgl_extensions/extension.rs
@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use canvas_traits::webgl::WebGLVersion;
 use dom::bindings::reflector::DomObject;
 use dom::bindings::root::DomRoot;
 use dom::bindings::trace::JSTraceable;
@@ -15,6 +16,9 @@ pub trait WebGLExtension: Sized where Self::Extension: DomObject + JSTraceable {
     /// Creates the DOM object of the WebGL extension.
     fn new(ctx: &WebGLRenderingContext) -> DomRoot<Self::Extension>;
 
+    /// Returns which WebGL spec is this extension written against.
+    fn spec() -> WebGLExtensionSpec;
+
     /// Checks if the extension is supported.
     fn is_supported(ext: &WebGLExtensions) -> bool;
 
@@ -24,3 +28,10 @@ pub trait WebGLExtension: Sized where Self::Extension: DomObject + JSTraceable {
     /// Name of the WebGL Extension.
     fn name() -> &'static str;
 }
+
+pub enum WebGLExtensionSpec {
+    /// Extensions written against both WebGL and WebGL2 specs.
+    All,
+    /// Extensions writen against a specific WebGL version spec.
+    Specific(WebGLVersion)
+}