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#![cfg(target_os = "windows")]
pub use api::win32;
pub use api::win32::{MonitorID, get_available_monitors, get_primary_monitor};
pub use api::win32::{WindowProxy, PollEventsIterator, WaitEventsIterator};
use libc;
use Api;
use BuilderAttribs;
use ContextError;
use CreationError;
use PixelFormat;
use GlContext;
use api::egl::ffi::egl::Egl;
use api::egl;
use api::egl::Context as EglContext;
use std::ffi::CString;
use std::ops::{Deref, DerefMut};
use kernel32;
/// Stupid wrapper because `*const libc::c_void` doesn't implement `Sync`.
struct EglWrapper(Egl);
unsafe impl Sync for EglWrapper {}
lazy_static! {
// An EGL implementation available on the system.
static ref EGL: Option<EglWrapper> = {
// the ATI drivers provide an EGL implementation in their DLLs
let dll_name = if cfg!(target_pointer_width = "64") {
b"atio6axx.dll\0"
} else {
b"atioglxx.dll\0"
};
let dll = unsafe { kernel32::LoadLibraryA(dll_name.as_ptr() as *const _) };
if !dll.is_null() {
let egl = Egl::load_with(|name| {
let name = CString::new(name).unwrap();
unsafe { kernel32::GetProcAddress(dll, name.as_ptr()) as *const _ }
});
Some(EglWrapper(egl))
} else {
None
}
};
}
/// The Win32 implementation of the main `Window` object.
pub struct Window(win32::Window);
impl Window {
/// See the docs in the crate root file.
pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
win32::Window::new(builder, EGL.as_ref().map(|w| &w.0)).map(|w| Window(w))
}
}
impl Deref for Window {
type Target = win32::Window;
fn deref(&self) -> &win32::Window {
&self.0
}
}
impl DerefMut for Window {
fn deref_mut(&mut self) -> &mut win32::Window {
&mut self.0
}
}
///
pub enum HeadlessContext {
/// A regular window, but invisible.
HiddenWindow(win32::Window),
/// An EGL pbuffer.
EglPbuffer(EglContext),
}
impl HeadlessContext {
pub fn new(mut builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
builder.visible = false;
// if EGL is available, we try using EGL first
// if EGL returns an error, we try the hidden window method
if let &Some(ref egl) = &*EGL {
let context = EglContext::new(egl.0.clone(), &builder, egl::NativeDisplay::Other(None))
.and_then(|prototype| prototype.finish_pbuffer())
.map(|ctxt| HeadlessContext::EglPbuffer(ctxt));
if let Ok(context) = context {
return Ok(context);
}
}
let window = try!(win32::Window::new(builder, EGL.as_ref().map(|w| &w.0)));
Ok(HeadlessContext::HiddenWindow(window))
}
}
impl GlContext for HeadlessContext {
unsafe fn make_current(&self) -> Result<(), ContextError> {
match self {
&HeadlessContext::HiddenWindow(ref ctxt) => ctxt.make_current(),
&HeadlessContext::EglPbuffer(ref ctxt) => ctxt.make_current(),
}
}
fn is_current(&self) -> bool {
match self {
&HeadlessContext::HiddenWindow(ref ctxt) => ctxt.is_current(),
&HeadlessContext::EglPbuffer(ref ctxt) => ctxt.is_current(),
}
}
fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
match self {
&HeadlessContext::HiddenWindow(ref ctxt) => ctxt.get_proc_address(addr),
&HeadlessContext::EglPbuffer(ref ctxt) => ctxt.get_proc_address(addr),
}
}
fn swap_buffers(&self) -> Result<(), ContextError> {
match self {
&HeadlessContext::HiddenWindow(ref ctxt) => ctxt.swap_buffers(),
&HeadlessContext::EglPbuffer(ref ctxt) => ctxt.swap_buffers(),
}
}
fn get_api(&self) -> Api {
match self {
&HeadlessContext::HiddenWindow(ref ctxt) => ctxt.get_api(),
&HeadlessContext::EglPbuffer(ref ctxt) => ctxt.get_api(),
}
}
fn get_pixel_format(&self) -> PixelFormat {
match self {
&HeadlessContext::HiddenWindow(ref ctxt) => ctxt.get_pixel_format(),
&HeadlessContext::EglPbuffer(ref ctxt) => ctxt.get_pixel_format(),
}
}
}
|
