1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
#![cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd"))]
use Api;
use ContextError;
use CreationError;
use GlAttributes;
use GlContext;
use PixelFormat;
use PixelFormatRequirements;
use libc;
use api::osmesa::{self, OsMesaContext};
#[cfg(feature = "window")]
pub use self::api_dispatch::{Window, WindowProxy, MonitorId, get_available_monitors, get_primary_monitor};
#[cfg(feature = "window")]
pub use self::api_dispatch::{WaitEventsIterator, PollEventsIterator};
#[cfg(feature = "window")]
mod api_dispatch;
#[cfg(not(feature = "window"))]
pub type Window = (); // TODO: hack to make things work
#[cfg(not(feature = "window"))]
pub type MonitorId = (); // TODO: hack to make things work
pub struct HeadlessContext(OsMesaContext);
impl HeadlessContext {
pub fn new(dimensions: (u32, u32), pf_reqs: &PixelFormatRequirements,
opengl: &GlAttributes<&HeadlessContext>) -> Result<HeadlessContext, CreationError>
{
let opengl = opengl.clone().map_sharing(|c| &c.0);
match OsMesaContext::new(dimensions, pf_reqs, &opengl) {
Ok(c) => return Ok(HeadlessContext(c)),
Err(osmesa::OsMesaCreationError::NotSupported) => (),
Err(osmesa::OsMesaCreationError::CreationError(e)) => return Err(e),
};
Err(CreationError::NotSupported)
}
}
impl GlContext for HeadlessContext {
#[inline]
unsafe fn make_current(&self) -> Result<(), ContextError> {
self.0.make_current()
}
#[inline]
fn is_current(&self) -> bool {
self.0.is_current()
}
#[inline]
fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
self.0.get_proc_address(addr)
}
#[inline]
fn swap_buffers(&self) -> Result<(), ContextError> {
self.0.swap_buffers()
}
#[inline]
fn get_api(&self) -> Api {
self.0.get_api()
}
#[inline]
fn get_pixel_format(&self) -> PixelFormat {
self.0.get_pixel_format()
}
}
|
