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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 crate::dom::bindings::codegen::Bindings::XRViewBinding::{XREye, XRViewMethods};
use crate::dom::bindings::codegen::Bindings::XRWebGLLayerBinding;
use crate::dom::bindings::codegen::Bindings::XRWebGLLayerBinding::XRWebGLLayerInit;
use crate::dom::bindings::codegen::Bindings::XRWebGLLayerBinding::XRWebGLLayerMethods;
use crate::dom::bindings::error::Fallible;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::globalscope::GlobalScope;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use crate::dom::window::Window;
use crate::dom::xrlayer::XRLayer;
use crate::dom::xrsession::XRSession;
use crate::dom::xrview::XRView;
use crate::dom::xrviewport::XRViewport;
use dom_struct::dom_struct;
use std::cell::Cell;
#[dom_struct]
pub struct XRWebGLLayer {
xrlayer: XRLayer,
antialias: Cell<bool>,
depth: Cell<bool>,
stencil: Cell<bool>,
alpha: Cell<bool>,
context: Dom<WebGLRenderingContext>,
session: Dom<XRSession>,
}
impl XRWebGLLayer {
pub fn new_inherited(
session: &XRSession,
context: &WebGLRenderingContext,
init: &XRWebGLLayerInit,
) -> XRWebGLLayer {
XRWebGLLayer {
xrlayer: XRLayer::new_inherited(),
antialias: Cell::new(init.antialias),
depth: Cell::new(init.depth),
stencil: Cell::new(init.stencil),
alpha: Cell::new(init.alpha),
context: Dom::from_ref(context),
session: Dom::from_ref(session),
}
}
pub fn new(
global: &GlobalScope,
session: &XRSession,
context: &WebGLRenderingContext,
init: &XRWebGLLayerInit,
) -> DomRoot<XRWebGLLayer> {
reflect_dom_object(
Box::new(XRWebGLLayer::new_inherited(session, context, init)),
global,
XRWebGLLayerBinding::Wrap,
)
}
pub fn Constructor(
global: &Window,
session: &XRSession,
context: &WebGLRenderingContext,
init: &XRWebGLLayerInit,
) -> Fallible<DomRoot<Self>> {
Ok(XRWebGLLayer::new(&global.global(), session, context, init))
}
}
impl XRWebGLLayerMethods for XRWebGLLayer {
/// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-depth
fn Depth(&self) -> bool {
self.depth.get()
}
/// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-stencil
fn Stencil(&self) -> bool {
self.stencil.get()
}
/// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-antialias
fn Antialias(&self) -> bool {
self.antialias.get()
}
/// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-alpha
fn Alpha(&self) -> bool {
self.alpha.get()
}
/// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-context
fn Context(&self) -> DomRoot<WebGLRenderingContext> {
DomRoot::from_ref(&self.context)
}
/// https://immersive-web.github.io/webxr/#dom-xrwebgllayer-getviewport
fn GetViewport(&self, view: &XRView) -> Option<DomRoot<XRViewport>> {
if self.session != view.session() {
return None;
}
let size = self.context.size();
let x = if view.Eye() == XREye::Left {
0
} else {
size.width / 2
};
// XXXManishearth this assumes the WebVR default of canvases being cut in half
// which need not be generally true for all devices, and will not work in
// inline VR mode
Some(XRViewport::new(
&self.global(),
x,
0,
size.width / 2,
size.height,
))
}
}
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