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875e387004
* script: Feature-gate all crown support. Signed-off-by: Josh Matthews <josh@joshmatthews.net> * script: Use cfg(crown) instead of a cargo feature. Signed-off-by: Josh Matthews <josh@joshmatthews.net> --------- Signed-off-by: Josh Matthews <josh@joshmatthews.net>
42 lines
1.3 KiB
Rust
42 lines
1.3 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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use canvas_traits::webgl::WebGLVersion;
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use super::WebGLExtensions;
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use crate::dom::bindings::reflector::DomObject;
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use crate::dom::bindings::root::DomRoot;
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use crate::dom::bindings::trace::JSTraceable;
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use crate::dom::webglrenderingcontext::WebGLRenderingContext;
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/// Trait implemented by WebGL extensions.
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pub(crate) trait WebGLExtension: Sized
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where
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Self::Extension: DomObject + JSTraceable,
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{
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#[cfg_attr(crown, crown::unrooted_must_root_lint::must_root)]
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type Extension;
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/// Creates the DOM object of the WebGL extension.
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fn new(ctx: &WebGLRenderingContext) -> DomRoot<Self::Extension>;
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/// Returns which WebGL spec is this extension written against.
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fn spec() -> WebGLExtensionSpec;
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/// Checks if the extension is supported.
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fn is_supported(ext: &WebGLExtensions) -> bool;
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/// Enable the extension.
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fn enable(ext: &WebGLExtensions);
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/// Name of the WebGL Extension.
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fn name() -> &'static str;
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}
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pub(crate) enum WebGLExtensionSpec {
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/// Extensions written against both WebGL and WebGL2 specs.
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All,
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/// Extensions writen against a specific WebGL version spec.
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Specific(WebGLVersion),
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}
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