servo/components/script/dom/webglframebuffer.rs
Patrick Walton bb99b2f3c8 script: Make most of 2D canvas and WebGL run over IPC.
To actually make the multiprocess communication work, we'll need to
reroute the task creation to the pipeline or the compositor. But this
works as a first step.
2015-07-25 00:50:12 -07:00

71 lines
2.3 KiB
Rust

/* 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 http://mozilla.org/MPL/2.0/. */
// https://www.khronos.org/registry/webgl/specs/latest/1.0/webgl.idl
use dom::bindings::codegen::Bindings::WebGLFramebufferBinding;
use dom::bindings::global::GlobalRef;
use dom::bindings::js::Root;
use dom::bindings::utils::reflect_dom_object;
use dom::webglobject::WebGLObject;
use canvas_traits::{CanvasMsg, CanvasWebGLMsg, WebGLFramebufferBindingRequest};
use ipc_channel::ipc::{self, IpcSender};
use std::cell::Cell;
#[dom_struct]
pub struct WebGLFramebuffer {
webgl_object: WebGLObject,
id: u32,
is_deleted: Cell<bool>,
renderer: IpcSender<CanvasMsg>,
}
impl WebGLFramebuffer {
fn new_inherited(renderer: IpcSender<CanvasMsg>, id: u32) -> WebGLFramebuffer {
WebGLFramebuffer {
webgl_object: WebGLObject::new_inherited(),
id: id,
is_deleted: Cell::new(false),
renderer: renderer,
}
}
pub fn maybe_new(global: GlobalRef, renderer: IpcSender<CanvasMsg>)
-> Option<Root<WebGLFramebuffer>> {
let (sender, receiver) = ipc::channel().unwrap();
renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::CreateFramebuffer(sender))).unwrap();
let result = receiver.recv().unwrap();
result.map(|fb_id| WebGLFramebuffer::new(global, renderer, *fb_id))
}
pub fn new(global: GlobalRef, renderer: IpcSender<CanvasMsg>, id: u32)
-> Root<WebGLFramebuffer> {
reflect_dom_object(box WebGLFramebuffer::new_inherited(renderer, id), global, WebGLFramebufferBinding::Wrap)
}
}
pub trait WebGLFramebufferHelpers {
fn id(self) -> u32;
fn bind(self, target: u32);
fn delete(self);
}
impl<'a> WebGLFramebufferHelpers for &'a WebGLFramebuffer {
fn id(self) -> u32 {
self.id
}
fn bind(self, target: u32) {
let cmd = CanvasWebGLMsg::BindFramebuffer(target, WebGLFramebufferBindingRequest::Explicit(self.id));
self.renderer.send(CanvasMsg::WebGL(cmd)).unwrap();
}
fn delete(self) {
if !self.is_deleted.get() {
self.is_deleted.set(true);
self.renderer.send(CanvasMsg::WebGL(CanvasWebGLMsg::DeleteFramebuffer(self.id))).unwrap();
}
}
}