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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 glutin::os::ContextTraitExt;
use glutin::{NotCurrent, PossiblyCurrent, WindowedContext};
use servo_media::player::context::GlContext as RawContext;
use std::os::raw;
pub enum GlContext {
Current(WindowedContext<PossiblyCurrent>),
NotCurrent(WindowedContext<NotCurrent>),
// Used a temporary value as we switch from Current to NotCurrent.
None,
}
impl GlContext {
pub fn window(&self) -> &glutin::Window {
match self {
GlContext::Current(c) => c.window(),
GlContext::NotCurrent(c) => c.window(),
GlContext::None => unreachable!(),
}
}
pub fn resize(&mut self, size: glutin::dpi::PhysicalSize) {
if let GlContext::NotCurrent(_) = self {
self.make_current();
}
match self {
GlContext::Current(c) => c.resize(size),
_ => unreachable!(),
}
}
pub fn make_current(&mut self) {
*self = match std::mem::replace(self, GlContext::None) {
GlContext::Current(c) => {
warn!("Making an already current context current");
GlContext::Current(c)
},
GlContext::NotCurrent(c) => {
let c = unsafe {
c.make_current().expect("Couldn't make window current")
};
GlContext::Current(c)
}
GlContext::None => unreachable!(),
}
}
pub fn make_not_current(&mut self) {
*self = match std::mem::replace(self, GlContext::None) {
GlContext::Current(c) => {
let c = unsafe {
c.make_not_current().expect("Couldn't make window not current")
};
GlContext::NotCurrent(c)
},
GlContext::NotCurrent(c) => {
warn!("Making an already not current context not current");
GlContext::NotCurrent(c)
}
GlContext::None => unreachable!(),
}
}
pub fn swap_buffers(&self) {
match self {
GlContext::Current(c) => {
if let Err(err) = c.swap_buffers() {
warn!("Failed to swap window buffers ({}).", err);
}
},
GlContext::NotCurrent(_) => {
error!("Context is not current. Forgot to call prepare_for_composite?");
},
GlContext::None => unreachable!(),
};
}
pub fn raw_context(&self) -> RawContext {
match self {
GlContext::Current(c) => {
#[cfg(any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
))]
{
use glutin::os::unix::RawHandle;
let raw_handle = unsafe { c.raw_handle() };
return match raw_handle {
RawHandle::Egl(handle) => RawContext::Egl(handle as usize),
RawHandle::Glx(handle) => RawContext::Glx(handle as usize),
};
}
#[cfg(target_os = "windows")]
{
use glutin::os::windows::RawHandle;
let raw_handle = unsafe { c.raw_handle() };
return match raw_handle {
RawHandle::Egl(handle) => RawContext::Egl(handle as usize),
// @TODO(victor): RawContext::Wgl in servo-media
RawHandle::Wgl(_) => unimplemented!(),
}
}
#[cfg(target_os = "android")]
{
let raw_handle = unsafe { c.raw_handle() };
return RawContext::Egl(raw_handle as usize);
}
#[cfg(target_os = "macos")]
return unimplemeneted!(); // @TODO(victor): RawContext::Cocoa in servo-media
#[cfg(not(any(
target_os = "linux",
target_os = "dragonfly",
target_os = "freebsd",
target_os = "netbsd",
target_os = "openbsd",
target_os = "windows",
target_os = "android",
target_os = "macos",
)))]
unimplemented!()
}
GlContext::NotCurrent(_) => {
error!("Context is not current.");
RawContext::Unknown
}
GlContext::None => unreachable!(),
}
}
pub fn egl_display(&self) -> Option<*const raw::c_void> {
match self {
GlContext::Current(c) => unsafe { c.get_egl_display() },
GlContext::NotCurrent(_) => {
error!("Context is not current.");
None
},
GlContext::None => unreachable!(),
}
}
pub fn get_api(&self) -> glutin::Api {
match self {
GlContext::Current(c) => c.get_api(),
GlContext::NotCurrent(c) => c.get_api(),
GlContext::None => unreachable!(),
}
}
}
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