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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
use ContextError;
use CreationError;
use CreationError::OsError;
use GlAttributes;
use GlContext;
use PixelFormatRequirements;
use core_foundation::base::TCFType;
use core_foundation::string::CFString;
use core_foundation::bundle::{CFBundleGetBundleWithIdentifier, CFBundleGetFunctionPointerForName};
use cocoa::base::{id, nil};
use cocoa::appkit::*;
use PixelFormat;
use api::cocoa::helpers;
#[derive(Default)]
pub struct PlatformSpecificHeadlessBuilderAttributes;
pub struct HeadlessContext {
width: u32,
height: u32,
context: id,
}
impl HeadlessContext {
pub fn new((width, height): (u32, u32), pf_reqs: &PixelFormatRequirements,
opengl: &GlAttributes<&HeadlessContext>,
_: &PlatformSpecificHeadlessBuilderAttributes)
-> Result<HeadlessContext, CreationError>
{
let context = unsafe {
let attributes = try!(helpers::build_nsattributes(pf_reqs, opengl));
let pixelformat = NSOpenGLPixelFormat::alloc(nil).initWithAttributes_(&attributes);
if pixelformat == nil {
return Err(OsError(format!("Could not create the pixel format")));
}
let context = NSOpenGLContext::alloc(nil).initWithFormat_shareContext_(pixelformat, nil);
if context == nil {
return Err(OsError(format!("Could not create the rendering context")));
}
context
};
let headless = HeadlessContext {
width: width,
height: height,
context: context,
};
Ok(headless)
}
}
impl GlContext for HeadlessContext {
unsafe fn make_current(&self) -> Result<(), ContextError> {
self.context.makeCurrentContext();
Ok(())
}
#[inline]
fn is_current(&self) -> bool {
unimplemented!()
}
#[inline]
fn get_proc_address(&self, _addr: &str) -> *const () {
let symbol_name: CFString = _addr.parse().unwrap();
let framework_name: CFString = "com.apple.opengl".parse().unwrap();
let framework = unsafe {
CFBundleGetBundleWithIdentifier(framework_name.as_concrete_TypeRef())
};
let symbol = unsafe {
CFBundleGetFunctionPointerForName(framework, symbol_name.as_concrete_TypeRef())
};
symbol as *const ()
}
#[inline]
fn swap_buffers(&self) -> Result<(), ContextError> {
unsafe { self.context.flushBuffer(); }
Ok(())
}
#[inline]
fn get_api(&self) -> ::Api {
::Api::OpenGl
}
#[inline]
fn get_pixel_format(&self) -> PixelFormat {
unimplemented!();
}
}
unsafe impl Send for HeadlessContext {}
unsafe impl Sync for HeadlessContext {}
|
