2014-10-22 17:04:13 +11:00
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use std::sync::atomic::AtomicBool;
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2015-04-02 04:04:43 +11:00
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use std::sync::{
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Arc,
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Mutex
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};
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2014-08-01 04:14:36 +10:00
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use std::ptr;
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2015-02-16 21:46:18 +11:00
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use std::mem;
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use std::os;
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2015-03-01 23:18:36 +11:00
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use std::thread;
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2015-03-01 23:41:00 +11:00
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2015-02-16 20:08:08 +11:00
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use super::callback;
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2014-08-02 18:42:17 +10:00
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use super::Window;
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2015-02-16 21:46:18 +11:00
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use super::MonitorID;
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2015-03-01 23:41:00 +11:00
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use super::ContextWrapper;
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use super::WindowWrapper;
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2015-03-01 23:57:09 +11:00
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use super::make_current_guard::CurrentContextGuard;
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2015-02-19 02:49:53 +11:00
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use Api;
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2015-01-14 20:04:28 +11:00
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use BuilderAttribs;
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2015-02-16 20:08:08 +11:00
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use CreationError;
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2014-11-19 16:09:54 +11:00
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use CreationError::OsError;
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2015-03-27 03:32:40 +11:00
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use CursorState;
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2015-02-19 02:49:53 +11:00
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use GlRequest;
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2015-02-17 01:36:32 +11:00
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use PixelFormat;
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2014-08-01 04:14:36 +10:00
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2015-01-08 19:28:22 +11:00
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use std::ffi::CString;
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2015-02-16 20:08:08 +11:00
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use std::sync::mpsc::channel;
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2014-11-28 01:52:07 +11:00
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2014-12-02 04:24:15 +11:00
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use libc;
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use super::gl;
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use winapi;
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2015-01-26 13:52:17 +11:00
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use kernel32;
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use user32;
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use gdi32;
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2014-12-02 04:24:15 +11:00
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2014-12-30 08:56:15 +11:00
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/// Work-around the fact that HGLRC doesn't implement Send
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pub struct ContextHack(pub winapi::HGLRC);
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unsafe impl Send for ContextHack {}
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2015-01-14 20:04:28 +11:00
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pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<ContextHack>)
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2014-11-25 05:35:31 +11:00
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-> Result<Window, CreationError>
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2014-10-05 04:17:02 +11:00
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{
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2014-08-02 07:02:26 +10:00
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// initializing variables to be sent to the task
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2015-01-14 20:04:28 +11:00
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let title = builder.title.as_slice().utf16_units()
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2015-03-02 00:07:50 +11:00
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.chain(Some(0).into_iter()).collect::<Vec<u16>>(); // title to utf16
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2014-08-01 04:55:30 +10:00
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let (tx, rx) = channel();
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2015-03-02 00:07:50 +11:00
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// `GetMessage` must be called in the same thread as CreateWindow, so we create a new thread
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// dedicated to this window.
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2015-03-01 23:18:36 +11:00
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thread::spawn(move || {
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2015-03-01 23:14:58 +11:00
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unsafe {
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2015-03-02 00:07:50 +11:00
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// creating and sending the `Window`
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2015-03-01 23:14:58 +11:00
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match init(title, builder, builder_sharelists) {
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Ok(w) => tx.send(Ok(w)).ok(),
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Err(e) => {
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tx.send(Err(e)).ok();
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return;
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}
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};
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// now that the `Window` struct is initialized, the main `Window::new()` function will
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// return and this events loop will run in parallel
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loop {
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let mut msg = mem::uninitialized();
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if user32::GetMessageW(&mut msg, ptr::null_mut(), 0, 0) == 0 {
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break;
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}
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user32::TranslateMessage(&msg);
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2015-03-02 00:07:50 +11:00
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user32::DispatchMessageW(&msg); // calls `callback` (see the callback module)
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2014-08-01 04:55:30 +10:00
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}
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2015-02-16 21:46:18 +11:00
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}
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});
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2014-08-22 19:19:19 +10:00
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2015-02-16 21:46:18 +11:00
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rx.recv().unwrap()
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}
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2014-10-05 04:17:02 +11:00
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2015-03-01 23:14:58 +11:00
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unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
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builder_sharelists: Option<ContextHack>) -> Result<Window, CreationError>
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2015-02-16 21:46:18 +11:00
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{
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let builder_sharelists = builder_sharelists.map(|s| s.0);
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// registering the window class
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let class_name = register_window_class();
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// building a RECT object with coordinates
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let mut rect = winapi::RECT {
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left: 0, right: builder.dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
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top: 0, bottom: builder.dimensions.unwrap_or((1024, 768)).1 as winapi::LONG,
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};
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// switching to fullscreen if necessary
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// this means adjusting the window's position so that it overlaps the right monitor,
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// and change the monitor's resolution if necessary
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if builder.monitor.is_some() {
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let monitor = builder.monitor.as_ref().unwrap();
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2015-03-01 23:14:58 +11:00
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try!(switch_to_fullscreen(&mut rect, monitor));
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2015-02-16 21:46:18 +11:00
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}
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// computing the style and extended style of the window
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let (ex_style, style) = if builder.monitor.is_some() {
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(winapi::WS_EX_APPWINDOW, winapi::WS_POPUP | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
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} else {
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(winapi::WS_EX_APPWINDOW | winapi::WS_EX_WINDOWEDGE,
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winapi::WS_OVERLAPPEDWINDOW | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
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};
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// adjusting the window coordinates using the style
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2015-03-01 23:14:58 +11:00
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user32::AdjustWindowRectEx(&mut rect, style, 0, ex_style);
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2015-02-16 21:46:18 +11:00
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2015-03-02 00:07:50 +11:00
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// the first step is to create a dummy window and a dummy context which we will use
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// to load the pointers to some functions in the OpenGL driver in `extra_functions`
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2015-03-01 20:33:25 +11:00
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let extra_functions = {
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2015-03-02 00:07:50 +11:00
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// creating a dummy invisible window
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2015-03-01 23:14:58 +11:00
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let dummy_window = {
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2015-01-26 13:52:17 +11:00
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let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
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2014-12-02 04:24:15 +11:00
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title.as_ptr() as winapi::LPCWSTR,
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style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
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2015-02-16 21:46:18 +11:00
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winapi::CW_USEDEFAULT, winapi::CW_USEDEFAULT,
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rect.right - rect.left, rect.bottom - rect.top,
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2015-01-26 13:52:17 +11:00
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ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
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2014-09-23 16:01:18 +10:00
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ptr::null_mut());
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2014-08-01 04:55:30 +10:00
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if handle.is_null() {
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2015-02-16 21:46:18 +11:00
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return Err(OsError(format!("CreateWindowEx function failed: {}",
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2015-03-01 23:41:00 +11:00
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os::error_string(os::errno()))));
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2014-08-01 04:55:30 +10:00
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}
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2015-03-01 23:41:00 +11:00
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let hdc = user32::GetDC(handle);
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2014-08-01 04:55:30 +10:00
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if hdc.is_null() {
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2015-02-16 21:46:18 +11:00
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let err = Err(OsError(format!("GetDC function failed: {}",
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2015-03-01 23:41:00 +11:00
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os::error_string(os::errno()))));
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2015-02-16 21:46:18 +11:00
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return err;
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2014-08-01 04:55:30 +10:00
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}
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2015-03-01 23:41:00 +11:00
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WindowWrapper(handle, hdc)
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2014-08-01 04:55:30 +10:00
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};
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2015-03-01 20:33:25 +11:00
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// getting the pixel format that we will use and setting it
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{
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2015-03-01 23:41:00 +11:00
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let formats = enumerate_native_pixel_formats(&dummy_window);
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2015-03-27 05:07:59 +11:00
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let (id, _) = try!(builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a))));
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2015-03-01 23:41:00 +11:00
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try!(set_pixel_format(&dummy_window, id));
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2014-08-01 04:14:36 +10:00
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}
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2015-03-02 00:07:50 +11:00
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// creating the dummy OpenGL context and making it current
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2015-03-01 23:41:00 +11:00
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let dummy_context = try!(create_context(None, &dummy_window, None));
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2015-03-01 23:57:09 +11:00
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let current_context = try!(CurrentContextGuard::make_current(&dummy_window,
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&dummy_context));
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2014-08-02 19:03:09 +10:00
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2015-02-16 21:46:18 +11:00
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|
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// loading the extra WGL functions
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2015-03-01 23:57:09 +11:00
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gl::wgl_extra::Wgl::load_with(|addr| {
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2015-02-16 21:46:18 +11:00
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use libc;
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|
2015-03-01 23:18:36 +11:00
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let addr = CString::new(addr.as_bytes()).unwrap();
|
2015-02-22 01:17:47 +11:00
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let addr = addr.as_ptr();
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2014-08-02 19:03:09 +10:00
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|
2015-03-01 23:14:58 +11:00
|
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gl::wgl::GetProcAddress(addr) as *const libc::c_void
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2015-03-01 23:57:09 +11:00
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})
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2015-02-16 21:46:18 +11:00
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};
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2014-08-02 08:01:45 +10:00
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|
2015-03-02 00:07:50 +11:00
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// creating the real window this time, by using the functions in `extra_functions`
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2015-03-01 23:14:58 +11:00
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let real_window = {
|
2015-02-16 21:46:18 +11:00
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let (width, height) = if builder.monitor.is_some() || builder.dimensions.is_some() {
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(Some(rect.right - rect.left), Some(rect.bottom - rect.top))
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} else {
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(None, None)
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};
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2014-08-02 08:01:45 +10:00
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|
2015-03-25 07:24:07 +11:00
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let (x, y) = if builder.monitor.is_some() {
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(Some(rect.left), Some(rect.top))
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} else {
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(None, None)
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};
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2015-02-16 21:46:18 +11:00
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let style = if !builder.visible || builder.headless {
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style
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} else {
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style | winapi::WS_VISIBLE
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2014-08-01 04:55:30 +10:00
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};
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|
2015-02-16 21:46:18 +11:00
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let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
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title.as_ptr() as winapi::LPCWSTR,
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style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
|
2015-03-25 07:24:07 +11:00
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x.unwrap_or(winapi::CW_USEDEFAULT), y.unwrap_or(winapi::CW_USEDEFAULT),
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2015-02-16 21:46:18 +11:00
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width.unwrap_or(winapi::CW_USEDEFAULT), height.unwrap_or(winapi::CW_USEDEFAULT),
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ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
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ptr::null_mut());
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if handle.is_null() {
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return Err(OsError(format!("CreateWindowEx function failed: {}",
|
2015-03-01 23:14:58 +11:00
|
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os::error_string(os::errno()))));
|
2014-08-02 08:01:45 +10:00
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}
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|
2015-03-01 23:41:00 +11:00
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let hdc = user32::GetDC(handle);
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2015-02-16 21:46:18 +11:00
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if hdc.is_null() {
|
2015-03-01 23:41:00 +11:00
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return Err(OsError(format!("GetDC function failed: {}",
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os::error_string(os::errno()))));
|
2015-02-16 21:46:18 +11:00
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}
|
2015-03-01 23:41:00 +11:00
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WindowWrapper(handle, hdc)
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2015-02-16 21:46:18 +11:00
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};
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// calling SetPixelFormat
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2015-03-01 20:33:25 +11:00
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{
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let formats = if extra_functions.GetPixelFormatAttribivARB.is_loaded() {
|
2015-03-01 23:41:00 +11:00
|
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enumerate_arb_pixel_formats(&extra_functions, &real_window)
|
2015-03-01 20:33:25 +11:00
|
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} else {
|
2015-03-01 23:41:00 +11:00
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enumerate_native_pixel_formats(&real_window)
|
2015-03-01 20:33:25 +11:00
|
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};
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|
2015-03-27 05:07:59 +11:00
|
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let (id, _) = try!(builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a))));
|
2015-03-01 23:41:00 +11:00
|
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try!(set_pixel_format(&real_window, id));
|
2015-02-16 21:46:18 +11:00
|
|
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}
|
2014-08-02 08:01:45 +10:00
|
|
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|
2015-02-16 21:46:18 +11:00
|
|
|
// creating the OpenGL context
|
2015-03-01 23:41:00 +11:00
|
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|
let context = try!(create_context(Some((&extra_functions, &builder)), &real_window,
|
|
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builder_sharelists));
|
2015-02-16 21:46:18 +11:00
|
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|
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|
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// calling SetForegroundWindow if fullscreen
|
|
|
|
if builder.monitor.is_some() {
|
2015-03-01 23:41:00 +11:00
|
|
|
user32::SetForegroundWindow(real_window.0);
|
2015-02-16 21:46:18 +11:00
|
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}
|
|
|
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|
2015-04-02 04:04:43 +11:00
|
|
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// Creating a mutex to track the current cursor state
|
|
|
|
let cursor_state = Arc::new(Mutex::new(CursorState::Normal));
|
|
|
|
|
|
|
|
// filling the CONTEXT_STASH task-local storage so that we can start receiving events
|
2015-02-16 21:46:18 +11:00
|
|
|
let events_receiver = {
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|
|
|
let (tx, rx) = channel();
|
|
|
|
let mut tx = Some(tx);
|
2015-04-02 04:04:43 +11:00
|
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|
callback::CONTEXT_STASH.with(|context_stash| {
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|
|
|
let data = callback::ThreadLocalData {
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|
|
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win: real_window.0,
|
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|
|
sender: tx.take().unwrap(),
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|
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cursor_state: cursor_state.clone()
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|
};
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|
|
(*context_stash.borrow_mut()) = Some(data);
|
2015-02-16 21:46:18 +11:00
|
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|
});
|
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|
rx
|
|
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|
};
|
|
|
|
|
|
|
|
// loading the opengl32 module
|
2015-02-17 01:57:17 +11:00
|
|
|
let gl_library = try!(load_opengl32_dll());
|
2015-02-16 21:46:18 +11:00
|
|
|
|
|
|
|
// handling vsync
|
|
|
|
if builder.vsync {
|
|
|
|
if extra_functions.SwapIntervalEXT.is_loaded() {
|
2015-03-26 05:57:38 +11:00
|
|
|
let _guard = try!(CurrentContextGuard::make_current(&real_window, &context));
|
2015-03-01 23:57:09 +11:00
|
|
|
|
2015-03-01 23:14:58 +11:00
|
|
|
if extra_functions.SwapIntervalEXT(1) == 0 {
|
2015-02-16 21:46:18 +11:00
|
|
|
return Err(OsError(format!("wglSwapIntervalEXT failed")));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// building the struct
|
|
|
|
Ok(Window {
|
|
|
|
window: real_window,
|
2015-02-17 01:42:00 +11:00
|
|
|
context: context,
|
2015-02-16 21:46:18 +11:00
|
|
|
gl_library: gl_library,
|
|
|
|
events_receiver: events_receiver,
|
|
|
|
is_closed: AtomicBool::new(false),
|
2015-04-02 04:04:43 +11:00
|
|
|
cursor_state: cursor_state,
|
2015-02-16 21:46:18 +11:00
|
|
|
})
|
|
|
|
}
|
|
|
|
|
2015-03-01 23:14:58 +11:00
|
|
|
unsafe fn register_window_class() -> Vec<u16> {
|
2015-02-16 21:46:18 +11:00
|
|
|
let class_name: Vec<u16> = "Window Class".utf16_units().chain(Some(0).into_iter())
|
|
|
|
.collect::<Vec<u16>>();
|
|
|
|
|
|
|
|
let class = winapi::WNDCLASSEXW {
|
|
|
|
cbSize: mem::size_of::<winapi::WNDCLASSEXW>() as winapi::UINT,
|
|
|
|
style: winapi::CS_HREDRAW | winapi::CS_VREDRAW | winapi::CS_OWNDC,
|
2015-02-24 00:46:47 +11:00
|
|
|
lpfnWndProc: Some(callback::callback),
|
2015-02-16 21:46:18 +11:00
|
|
|
cbClsExtra: 0,
|
|
|
|
cbWndExtra: 0,
|
2015-03-01 23:14:58 +11:00
|
|
|
hInstance: kernel32::GetModuleHandleW(ptr::null()),
|
2015-02-16 21:46:18 +11:00
|
|
|
hIcon: ptr::null_mut(),
|
2015-03-27 03:32:40 +11:00
|
|
|
hCursor: ptr::null_mut(), // must be null in order for cursor state to work properly
|
2015-02-16 21:46:18 +11:00
|
|
|
hbrBackground: ptr::null_mut(),
|
|
|
|
lpszMenuName: ptr::null(),
|
|
|
|
lpszClassName: class_name.as_ptr(),
|
|
|
|
hIconSm: ptr::null_mut(),
|
|
|
|
};
|
|
|
|
|
|
|
|
// We ignore errors because registering the same window class twice would trigger
|
|
|
|
// an error, and because errors here are detected during CreateWindowEx anyway.
|
|
|
|
// Also since there is no weird element in the struct, there is no reason for this
|
|
|
|
// call to fail.
|
2015-03-01 23:14:58 +11:00
|
|
|
user32::RegisterClassExW(&class);
|
2015-02-16 21:46:18 +11:00
|
|
|
|
|
|
|
class_name
|
|
|
|
}
|
|
|
|
|
2015-03-01 23:14:58 +11:00
|
|
|
unsafe fn switch_to_fullscreen(rect: &mut winapi::RECT, monitor: &MonitorID)
|
|
|
|
-> Result<(), CreationError>
|
|
|
|
{
|
2015-02-16 21:46:18 +11:00
|
|
|
// adjusting the rect
|
|
|
|
{
|
|
|
|
let pos = monitor.get_position();
|
|
|
|
rect.left += pos.0 as winapi::LONG;
|
|
|
|
rect.right += pos.0 as winapi::LONG;
|
|
|
|
rect.top += pos.1 as winapi::LONG;
|
|
|
|
rect.bottom += pos.1 as winapi::LONG;
|
|
|
|
}
|
|
|
|
|
|
|
|
// changing device settings
|
2015-03-01 23:14:58 +11:00
|
|
|
let mut screen_settings: winapi::DEVMODEW = mem::zeroed();
|
2015-02-16 21:46:18 +11:00
|
|
|
screen_settings.dmSize = mem::size_of::<winapi::DEVMODEW>() as winapi::WORD;
|
|
|
|
screen_settings.dmPelsWidth = (rect.right - rect.left) as winapi::DWORD;
|
|
|
|
screen_settings.dmPelsHeight = (rect.bottom - rect.top) as winapi::DWORD;
|
|
|
|
screen_settings.dmBitsPerPel = 32; // TODO: ?
|
|
|
|
screen_settings.dmFields = winapi::DM_BITSPERPEL | winapi::DM_PELSWIDTH | winapi::DM_PELSHEIGHT;
|
|
|
|
|
2015-03-25 07:29:17 +11:00
|
|
|
let result = user32::ChangeDisplaySettingsExW(monitor.get_adapter_name().as_ptr(),
|
2015-03-01 23:14:58 +11:00
|
|
|
&mut screen_settings, ptr::null_mut(),
|
|
|
|
winapi::CDS_FULLSCREEN, ptr::null_mut());
|
2015-02-16 21:46:18 +11:00
|
|
|
|
|
|
|
if result != winapi::DISP_CHANGE_SUCCESSFUL {
|
|
|
|
return Err(OsError(format!("ChangeDisplaySettings failed: {}", result)));
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok(())
|
2014-08-01 04:14:36 +10:00
|
|
|
}
|
2015-02-16 23:58:43 +11:00
|
|
|
|
2015-03-01 23:14:58 +11:00
|
|
|
unsafe fn create_context(extra: Option<(&gl::wgl_extra::Wgl, &BuilderAttribs<'static>)>,
|
2015-03-01 23:41:00 +11:00
|
|
|
hdc: &WindowWrapper, share: Option<winapi::HGLRC>)
|
|
|
|
-> Result<ContextWrapper, CreationError>
|
2015-02-16 23:58:43 +11:00
|
|
|
{
|
|
|
|
let share = share.unwrap_or(ptr::null_mut());
|
|
|
|
|
|
|
|
let ctxt = if let Some((extra_functions, builder)) = extra {
|
|
|
|
if extra_functions.CreateContextAttribsARB.is_loaded() {
|
|
|
|
let mut attributes = Vec::new();
|
|
|
|
|
2015-02-19 02:49:53 +11:00
|
|
|
match builder.gl_version {
|
|
|
|
GlRequest::Latest => {},
|
|
|
|
GlRequest::Specific(Api::OpenGl, (major, minor)) => {
|
|
|
|
attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
|
|
|
|
attributes.push(major as libc::c_int);
|
|
|
|
attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
|
|
|
|
attributes.push(minor as libc::c_int);
|
|
|
|
},
|
|
|
|
GlRequest::Specific(_, _) => panic!("Only OpenGL is supported"),
|
|
|
|
GlRequest::GlThenGles { opengl_version: (major, minor), .. } => {
|
|
|
|
attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
|
|
|
|
attributes.push(major as libc::c_int);
|
|
|
|
attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
|
|
|
|
attributes.push(minor as libc::c_int);
|
|
|
|
},
|
2015-02-16 23:58:43 +11:00
|
|
|
}
|
|
|
|
|
|
|
|
if builder.gl_debug {
|
|
|
|
attributes.push(gl::wgl_extra::CONTEXT_FLAGS_ARB as libc::c_int);
|
|
|
|
attributes.push(gl::wgl_extra::CONTEXT_DEBUG_BIT_ARB as libc::c_int);
|
|
|
|
}
|
|
|
|
|
|
|
|
attributes.push(0);
|
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
Some(extra_functions.CreateContextAttribsARB(hdc.1 as *const libc::c_void,
|
2015-03-01 23:14:58 +11:00
|
|
|
share as *const libc::c_void,
|
|
|
|
attributes.as_slice().as_ptr()))
|
|
|
|
|
2015-02-16 23:58:43 +11:00
|
|
|
} else {
|
|
|
|
None
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
None
|
|
|
|
};
|
|
|
|
|
|
|
|
let ctxt = match ctxt {
|
|
|
|
Some(ctxt) => ctxt,
|
|
|
|
None => {
|
2015-03-01 23:41:00 +11:00
|
|
|
let ctxt = gl::wgl::CreateContext(hdc.1 as *const libc::c_void);
|
2015-03-01 23:14:58 +11:00
|
|
|
if !ctxt.is_null() && !share.is_null() {
|
|
|
|
gl::wgl::ShareLists(share as *const libc::c_void, ctxt);
|
|
|
|
};
|
|
|
|
ctxt
|
2015-02-16 23:58:43 +11:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
if ctxt.is_null() {
|
|
|
|
return Err(OsError(format!("OpenGL context creation failed: {}",
|
2015-02-20 06:18:50 +11:00
|
|
|
os::error_string(os::errno()))));
|
2015-02-16 23:58:43 +11:00
|
|
|
}
|
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
Ok(ContextWrapper(ctxt as winapi::HGLRC))
|
2015-02-16 23:58:43 +11:00
|
|
|
}
|
2015-02-17 01:36:32 +11:00
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
unsafe fn enumerate_native_pixel_formats(hdc: &WindowWrapper) -> Vec<(PixelFormat, libc::c_int)> {
|
2015-02-17 01:36:32 +11:00
|
|
|
let size_of_pxfmtdescr = mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as u32;
|
2015-03-01 23:41:00 +11:00
|
|
|
let num = gdi32::DescribePixelFormat(hdc.1, 1, size_of_pxfmtdescr, ptr::null_mut());
|
2015-02-17 01:36:32 +11:00
|
|
|
|
|
|
|
let mut result = Vec::new();
|
|
|
|
|
|
|
|
for index in (0 .. num) {
|
2015-03-01 23:14:58 +11:00
|
|
|
let mut output: winapi::PIXELFORMATDESCRIPTOR = mem::zeroed();
|
2015-02-17 01:36:32 +11:00
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
if gdi32::DescribePixelFormat(hdc.1, index, size_of_pxfmtdescr, &mut output) == 0 {
|
2015-02-17 01:36:32 +11:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (output.dwFlags & winapi::PFD_DRAW_TO_WINDOW) == 0 {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2015-03-01 21:07:46 +11:00
|
|
|
if (output.dwFlags & winapi::PFD_SUPPORT_OPENGL) == 0 {
|
2015-02-17 01:36:32 +11:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if output.iPixelType != winapi::PFD_TYPE_RGBA {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
result.push((PixelFormat {
|
2015-03-01 21:07:46 +11:00
|
|
|
hardware_accelerated: (output.dwFlags & winapi::PFD_GENERIC_FORMAT) == 0,
|
2015-02-17 01:36:32 +11:00
|
|
|
red_bits: output.cRedBits,
|
|
|
|
green_bits: output.cGreenBits,
|
|
|
|
blue_bits: output.cBlueBits,
|
|
|
|
alpha_bits: output.cAlphaBits,
|
|
|
|
depth_bits: output.cDepthBits,
|
|
|
|
stencil_bits: output.cStencilBits,
|
|
|
|
stereoscopy: (output.dwFlags & winapi::PFD_STEREO) != 0,
|
|
|
|
double_buffer: (output.dwFlags & winapi::PFD_DOUBLEBUFFER) != 0,
|
|
|
|
multisampling: None,
|
|
|
|
srgb: false,
|
|
|
|
}, index));
|
|
|
|
}
|
|
|
|
|
|
|
|
result
|
|
|
|
}
|
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
unsafe fn enumerate_arb_pixel_formats(extra: &gl::wgl_extra::Wgl, hdc: &WindowWrapper)
|
2015-03-01 23:14:58 +11:00
|
|
|
-> Vec<(PixelFormat, libc::c_int)>
|
2015-02-17 01:55:26 +11:00
|
|
|
{
|
|
|
|
let get_info = |index: u32, attrib: u32| {
|
2015-03-01 23:14:58 +11:00
|
|
|
let mut value = mem::uninitialized();
|
2015-03-01 23:41:00 +11:00
|
|
|
extra.GetPixelFormatAttribivARB(hdc.1 as *const libc::c_void, index as libc::c_int,
|
2015-03-01 23:14:58 +11:00
|
|
|
0, 1, [attrib as libc::c_int].as_ptr(),
|
|
|
|
&mut value);
|
2015-02-17 01:55:26 +11:00
|
|
|
value as u32
|
|
|
|
};
|
|
|
|
|
|
|
|
// getting the number of formats
|
|
|
|
// the `1` is ignored
|
|
|
|
let num = get_info(1, gl::wgl_extra::NUMBER_PIXEL_FORMATS_ARB);
|
|
|
|
|
|
|
|
let mut result = Vec::new();
|
|
|
|
|
|
|
|
for index in (0 .. num) {
|
|
|
|
if get_info(index, gl::wgl_extra::DRAW_TO_WINDOW_ARB) == 0 {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if get_info(index, gl::wgl_extra::SUPPORT_OPENGL_ARB) == 0 {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if get_info(index, gl::wgl_extra::ACCELERATION_ARB) == gl::wgl_extra::NO_ACCELERATION_ARB {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if get_info(index, gl::wgl_extra::PIXEL_TYPE_ARB) != gl::wgl_extra::TYPE_RGBA_ARB {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
result.push((PixelFormat {
|
2015-03-01 21:07:46 +11:00
|
|
|
hardware_accelerated: true,
|
2015-02-17 01:55:26 +11:00
|
|
|
red_bits: get_info(index, gl::wgl_extra::RED_BITS_ARB) as u8,
|
|
|
|
green_bits: get_info(index, gl::wgl_extra::GREEN_BITS_ARB) as u8,
|
|
|
|
blue_bits: get_info(index, gl::wgl_extra::BLUE_BITS_ARB) as u8,
|
|
|
|
alpha_bits: get_info(index, gl::wgl_extra::ALPHA_BITS_ARB) as u8,
|
|
|
|
depth_bits: get_info(index, gl::wgl_extra::DEPTH_BITS_ARB) as u8,
|
|
|
|
stencil_bits: get_info(index, gl::wgl_extra::STENCIL_BITS_ARB) as u8,
|
|
|
|
stereoscopy: get_info(index, gl::wgl_extra::STEREO_ARB) != 0,
|
|
|
|
double_buffer: get_info(index, gl::wgl_extra::DOUBLE_BUFFER_ARB) != 0,
|
|
|
|
multisampling: None, // FIXME:
|
|
|
|
srgb: false, // FIXME:
|
|
|
|
}, index as libc::c_int));
|
|
|
|
}
|
|
|
|
|
|
|
|
result
|
2015-02-17 01:36:32 +11:00
|
|
|
}
|
2015-02-17 01:57:17 +11:00
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
unsafe fn set_pixel_format(hdc: &WindowWrapper, id: libc::c_int) -> Result<(), CreationError> {
|
2015-03-01 23:14:58 +11:00
|
|
|
let mut output: winapi::PIXELFORMATDESCRIPTOR = mem::zeroed();
|
2015-03-01 20:33:25 +11:00
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
if gdi32::DescribePixelFormat(hdc.1, id, mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>()
|
2015-03-01 23:14:58 +11:00
|
|
|
as winapi::UINT, &mut output) == 0
|
2015-03-01 20:33:25 +11:00
|
|
|
{
|
|
|
|
return Err(OsError(format!("DescribePixelFormat function failed: {}",
|
|
|
|
os::error_string(os::errno()))));
|
|
|
|
}
|
|
|
|
|
2015-03-01 23:41:00 +11:00
|
|
|
if gdi32::SetPixelFormat(hdc.1, id, &output) == 0 {
|
2015-03-01 20:33:25 +11:00
|
|
|
return Err(OsError(format!("SetPixelFormat function failed: {}",
|
|
|
|
os::error_string(os::errno()))));
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
2015-03-01 23:14:58 +11:00
|
|
|
unsafe fn load_opengl32_dll() -> Result<winapi::HMODULE, CreationError> {
|
2015-02-17 01:57:17 +11:00
|
|
|
let name = "opengl32.dll".utf16_units().chain(Some(0).into_iter())
|
|
|
|
.collect::<Vec<u16>>().as_ptr();
|
|
|
|
|
2015-03-01 23:14:58 +11:00
|
|
|
let lib = kernel32::LoadLibraryW(name);
|
2015-02-17 01:57:17 +11:00
|
|
|
|
|
|
|
if lib.is_null() {
|
|
|
|
return Err(OsError(format!("LoadLibrary function failed: {}",
|
2015-02-20 06:18:50 +11:00
|
|
|
os::error_string(os::errno()))));
|
2015-02-17 01:57:17 +11:00
|
|
|
}
|
|
|
|
|
|
|
|
Ok(lib)
|
|
|
|
}
|