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