1 files changed, 40 insertions, 0 deletions
diff --git a/components/script/dom/webgl_extensions/extension.rs b/components/script/dom/webgl_extensions/extension.rs
new file mode 100644
index 00000000000..3854acee122
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+++ b/components/script/dom/webgl_extensions/extension.rs
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use super::WebGLExtensions;
+use crate::dom::bindings::reflector::DomObject;
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::bindings::trace::JSTraceable;
+use crate::dom::webglrenderingcontext::WebGLRenderingContext;
+use canvas_traits::webgl::WebGLVersion;
+
+/// Trait implemented by WebGL extensions.
+pub trait WebGLExtension: Sized
+where
+    Self::Extension: DomObject + JSTraceable,
+{
+    type Extension;
+
+    /// 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;
+
+    /// Enable the extension.
+    fn enable(ext: &WebGLExtensions);
+
+    /// 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),
+}