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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 http://mozilla.org/MPL/2.0/. */
// https://www.khronos.org/registry/webgl/specs/latest/1.0/webgl.idl
use canvas_traits::webgl::{webgl_channel, WebGLCommand, WebGLError, WebGLMsgSender, WebGLRenderbufferId, WebGLResult};
use dom::bindings::codegen::Bindings::WebGLRenderbufferBinding;
use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
use dom::bindings::reflector::reflect_dom_object;
use dom::bindings::root::DomRoot;
use dom::webglobject::WebGLObject;
use dom::window::Window;
use dom_struct::dom_struct;
use std::cell::Cell;
#[dom_struct]
pub struct WebGLRenderbuffer {
webgl_object: WebGLObject,
id: WebGLRenderbufferId,
ever_bound: Cell<bool>,
is_deleted: Cell<bool>,
size: Cell<Option<(i32, i32)>>,
internal_format: Cell<Option<u32>>,
#[ignore_malloc_size_of = "Defined in ipc-channel"]
renderer: WebGLMsgSender,
}
impl WebGLRenderbuffer {
fn new_inherited(renderer: WebGLMsgSender,
id: WebGLRenderbufferId)
-> WebGLRenderbuffer {
WebGLRenderbuffer {
webgl_object: WebGLObject::new_inherited(),
id: id,
ever_bound: Cell::new(false),
is_deleted: Cell::new(false),
renderer: renderer,
internal_format: Cell::new(None),
size: Cell::new(None),
}
}
pub fn maybe_new(window: &Window, renderer: WebGLMsgSender)
-> Option<DomRoot<WebGLRenderbuffer>> {
let (sender, receiver) = webgl_channel().unwrap();
renderer.send(WebGLCommand::CreateRenderbuffer(sender)).unwrap();
let result = receiver.recv().unwrap();
result.map(|renderbuffer_id| WebGLRenderbuffer::new(window, renderer, renderbuffer_id))
}
pub fn new(window: &Window,
renderer: WebGLMsgSender,
id: WebGLRenderbufferId)
-> DomRoot<WebGLRenderbuffer> {
reflect_dom_object(Box::new(WebGLRenderbuffer::new_inherited(renderer, id)),
window,
WebGLRenderbufferBinding::Wrap)
}
}
impl WebGLRenderbuffer {
pub fn id(&self) -> WebGLRenderbufferId {
self.id
}
pub fn size(&self) -> Option<(i32, i32)> {
self.size.get()
}
pub fn bind(&self, target: u32) {
self.ever_bound.set(true);
let msg = WebGLCommand::BindRenderbuffer(target, Some(self.id));
self.renderer.send(msg).unwrap();
}
pub fn delete(&self) {
if !self.is_deleted.get() {
self.is_deleted.set(true);
let _ = self.renderer.send(WebGLCommand::DeleteRenderbuffer(self.id));
}
}
pub fn is_deleted(&self) -> bool {
self.is_deleted.get()
}
pub fn ever_bound(&self) -> bool {
self.ever_bound.get()
}
pub fn storage(&self, internal_format: u32, width: i32, height: i32) -> WebGLResult<()> {
// Validate the internal_format, and save it for completeness
// validation.
match internal_format {
constants::RGBA4 |
constants::DEPTH_STENCIL |
constants::DEPTH_COMPONENT16 |
constants::STENCIL_INDEX8 =>
self.internal_format.set(Some(internal_format)),
_ => return Err(WebGLError::InvalidEnum),
};
// FIXME: Check that w/h are < MAX_RENDERBUFFER_SIZE
// FIXME: Invalidate completeness after the call
let msg = WebGLCommand::RenderbufferStorage(constants::RENDERBUFFER, internal_format, width, height);
self.renderer.send(msg).unwrap();
self.size.set(Some((width, height)));
Ok(())
}
}
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