forked from mirrors/gecko-dev
086acefea5
GitHub doesn't allow me to reopen #5769, so I created this. Sorry about the merge fail, my bad :/ cc/ @jdm @dmarcos --- This PR uses customized GL context creation code, right now only working under Linux, so I expect the clearcolor test to fail on other platforms. It addresses some other problems: * Propagates context creation error to the top, returning null if not found. * Uses GLContextAttributes, which will allow us to write WebGLContextAttributes easily. * Doesn't allow a 2d context and a WebGL context coexist. * Panics when resizing the context to larger dimensions (to be fixed soon, but better than blindly allowing it). Removes some unused dependencies Source-Repo: https://github.com/servo/servo Source-Revision: 9f2ad9376eaf598898387ea2c26f48c3ceb0330d
81 lines
2.9 KiB
Rust
81 lines
2.9 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 http://mozilla.org/MPL/2.0/. */
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use canvas::webgl_paint_task::WebGLPaintTask;
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use canvas::canvas_msg::{CanvasMsg, CanvasWebGLMsg, CanvasCommonMsg};
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use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding;
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use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextMethods;
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use dom::bindings::global::{GlobalRef, GlobalField};
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use dom::bindings::js::{JS, JSRef, LayoutJS, Temporary};
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use dom::bindings::utils::{Reflector, reflect_dom_object};
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use dom::htmlcanvaselement::{HTMLCanvasElement};
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use geom::size::Size2D;
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use std::sync::mpsc::{Sender};
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#[dom_struct]
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pub struct WebGLRenderingContext {
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reflector_: Reflector,
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global: GlobalField,
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renderer: Sender<CanvasMsg>,
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canvas: JS<HTMLCanvasElement>,
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}
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impl WebGLRenderingContext {
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fn new_inherited(global: GlobalRef, canvas: JSRef<HTMLCanvasElement>, size: Size2D<i32>)
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-> Result<WebGLRenderingContext, &'static str> {
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let chan = try!(WebGLPaintTask::start(size));
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Ok(WebGLRenderingContext {
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reflector_: Reflector::new(),
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global: GlobalField::from_rooted(&global),
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renderer: chan,
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canvas: JS::from_rooted(canvas),
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})
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}
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pub fn new(global: GlobalRef, canvas: JSRef<HTMLCanvasElement>, size: Size2D<i32>)
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-> Option<Temporary<WebGLRenderingContext>> {
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match WebGLRenderingContext::new_inherited(global, canvas, size) {
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Ok(ctx) => Some(reflect_dom_object(box ctx, global,
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WebGLRenderingContextBinding::Wrap)),
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Err(msg) => {
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error!("Couldn't create WebGLRenderingContext: {}", msg);
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None
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}
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}
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}
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pub fn recreate(&self, size: Size2D<i32>) {
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self.renderer.send(CanvasMsg::Common(CanvasCommonMsg::Recreate(size))).unwrap();
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}
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}
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#[unsafe_destructor]
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impl Drop for WebGLRenderingContext {
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fn drop(&mut self) {
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self.renderer.send(CanvasMsg::Common(CanvasCommonMsg::Close)).unwrap();
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}
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}
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impl<'a> WebGLRenderingContextMethods for JSRef<'a, WebGLRenderingContext> {
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fn Clear(self, mask: u32) -> () {
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self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::Clear(mask))).unwrap()
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}
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fn ClearColor(self, red: f32, green: f32, blue: f32, alpha: f32) -> (){
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self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::ClearColor(red, green, blue, alpha))).unwrap()
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}
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}
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pub trait LayoutCanvasWebGLRenderingContextHelpers {
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#[allow(unsafe_code)]
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unsafe fn get_renderer(&self) -> Sender<CanvasMsg>;
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}
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impl LayoutCanvasWebGLRenderingContextHelpers for LayoutJS<WebGLRenderingContext> {
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#[allow(unsafe_code)]
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unsafe fn get_renderer(&self) -> Sender<CanvasMsg> {
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(*self.unsafe_get()).renderer.clone()
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}
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}
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