mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-12-24 22:31:30 +11:00
Merge pull request #279 from tomaka/win32-correct
Work on the win32 implementation
This commit is contained in:
tomaka
commit
eb330030de
4
build.rs
4
build.rs
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@ -22,7 +22,9 @@ fn main() {
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khronos_api::WGL_XML,
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vec![
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"WGL_ARB_create_context".to_string(),
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"WGL_EXT_swap_control".to_string()
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"WGL_EXT_swap_control".to_string(),
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"WGL_ARB_pixel_format".to_string(),
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"WGL_ARB_framebuffer_sRGB".to_string(),
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],
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"1.0", "core", &mut file).unwrap();
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}
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53
src/lib.rs
53
src/lib.rs
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@ -170,6 +170,21 @@ pub enum MouseCursor {
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RowResize,
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}
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/// Describes a possible format. Unused.
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#[allow(missing_docs)]
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pub struct PixelFormat {
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pub red_bits: u8,
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pub green_bits: u8,
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pub blue_bits: u8,
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pub alpha_bits: u8,
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pub depth_bits: u8,
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pub stencil_bits: u8,
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pub stereoscopy: bool,
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pub double_buffer: bool,
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pub multisampling: Option<u16>,
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pub srgb: bool,
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}
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/// Attributes
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struct BuilderAttribs<'a> {
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#[allow(dead_code)]
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@ -239,5 +254,41 @@ impl<'a> BuilderAttribs<'a> {
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(new_attribs, sharing)
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}
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}
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fn choose_pixel_format<T, I>(&self, iter: I) -> (T, PixelFormat)
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where I: Iterator<Item=(T, PixelFormat)>, T: Clone
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{
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let mut current_result = None;
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// TODO: do this more properly
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for (id, format) in iter {
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if format.red_bits + format.green_bits + format.blue_bits < self.color_bits.unwrap_or(0) {
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continue;
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}
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if format.alpha_bits < self.alpha_bits.unwrap_or(0) {
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continue;
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}
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if format.depth_bits < self.depth_bits.unwrap_or(0) {
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continue;
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}
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if format.stencil_bits < self.stencil_bits.unwrap_or(0) {
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continue;
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}
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if !format.stereoscopy && self.stereoscopy {
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continue;
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}
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if self.multisampling.is_some() && format.multisampling.is_none() {
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continue;
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}
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current_result = Some((id, format));
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}
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current_result.expect("Could not find compliant pixel format")
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}
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}
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@ -1,10 +1,14 @@
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use std::sync::atomic::AtomicBool;
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use std::ptr;
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use std::mem;
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use std::os;
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use super::callback;
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use super::Window;
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use super::MonitorID;
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use BuilderAttribs;
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use CreationError;
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use CreationError::OsError;
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use PixelFormat;
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use std::ffi::CString;
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use std::sync::mpsc::channel;
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@ -23,9 +27,6 @@ unsafe impl Send for ContextHack {}
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pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<ContextHack>)
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-> Result<Window, CreationError>
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{
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use std::mem;
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use std::os;
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// initializing variables to be sent to the task
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let title = builder.title.as_slice().utf16_units()
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.chain(Some(0).into_iter()).collect::<Vec<u16>>(); // title to utf16
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@ -36,368 +37,14 @@ pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<C
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// so we create a new thread dedicated to this window.
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// This is the only safe method. Using `nosend` wouldn't work for non-native runtime.
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::std::thread::Thread::spawn(move || {
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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 = {
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let class_name: Vec<u16> = "Window Class".utf16_units().chain(Some(0).into_iter())
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.collect::<Vec<u16>>();
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let class = winapi::WNDCLASSEXW {
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cbSize: mem::size_of::<winapi::WNDCLASSEXW>() as winapi::UINT,
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style: winapi::CS_HREDRAW | winapi::CS_VREDRAW | winapi::CS_OWNDC,
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lpfnWndProc: callback::callback,
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cbClsExtra: 0,
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cbWndExtra: 0,
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hInstance: unsafe { kernel32::GetModuleHandleW(ptr::null()) },
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hIcon: ptr::null_mut(),
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hCursor: ptr::null_mut(),
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hbrBackground: ptr::null_mut(),
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lpszMenuName: ptr::null(),
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lpszClassName: class_name.as_ptr(),
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hIconSm: ptr::null_mut(),
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};
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// We ignore errors because registering the same window class twice would trigger
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// an error, and because errors here are detected during CreateWindowEx anyway.
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// Also since there is no weird element in the struct, there is no reason for this
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// call to fail.
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unsafe { user32::RegisterClassExW(&class) };
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class_name
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};
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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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// adjusting the rect
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{
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let pos = monitor.get_position();
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rect.left += pos.0 as winapi::LONG;
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rect.right += pos.0 as winapi::LONG;
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rect.top += pos.1 as winapi::LONG;
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rect.bottom += pos.1 as winapi::LONG;
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}
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// changing device settings
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let mut screen_settings: winapi::DEVMODEW = unsafe { mem::zeroed() };
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screen_settings.dmSize = mem::size_of::<winapi::DEVMODEW>() as winapi::WORD;
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screen_settings.dmPelsWidth = (rect.right - rect.left) as winapi::DWORD;
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screen_settings.dmPelsHeight = (rect.bottom - rect.top) as winapi::DWORD;
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screen_settings.dmBitsPerPel = 32; // TODO: ?
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screen_settings.dmFields = winapi::DM_BITSPERPEL | winapi::DM_PELSWIDTH | winapi::DM_PELSHEIGHT;
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let result = unsafe { user32::ChangeDisplaySettingsExW(monitor.get_system_name().as_ptr(),
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&mut screen_settings, ptr::null_mut(), winapi::CDS_FULLSCREEN, ptr::null_mut()) };
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if result != winapi::DISP_CHANGE_SUCCESSFUL {
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tx.send(Err(OsError(format!("ChangeDisplaySettings failed: {}", result))));
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return;
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}
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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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unsafe { user32::AdjustWindowRectEx(&mut rect, style, 0, ex_style) };
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// getting the address of wglCreateContextAttribsARB and the pixel format
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// that we will use
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let (extra_functions, pixel_format) = {
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// creating a dummy invisible window for GL initialization
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let dummy_window = unsafe {
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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,
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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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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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use std::os;
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tx.send(Err(OsError(format!("CreateWindowEx function failed: {}",
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os::error_string(os::errno() as usize)))));
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return;
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}
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handle
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};
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// getting the HDC of the dummy window
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let dummy_hdc = {
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let hdc = unsafe { user32::GetDC(dummy_window) };
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if hdc.is_null() {
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tx.send(Err(OsError(format!("GetDC function failed: {}",
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os::error_string(os::errno() as usize)))));
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unsafe { user32::DestroyWindow(dummy_window); }
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return;
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}
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hdc
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};
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// getting the pixel format that we will use
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let pixel_format = {
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// initializing a PIXELFORMATDESCRIPTOR that indicates what we want
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let mut output: winapi::PIXELFORMATDESCRIPTOR = unsafe { mem::zeroed() };
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output.nSize = mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as winapi::WORD;
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output.nVersion = 1;
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output.dwFlags = winapi::PFD_DRAW_TO_WINDOW | winapi::PFD_DOUBLEBUFFER |
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winapi::PFD_SUPPORT_OPENGL | winapi::PFD_GENERIC_ACCELERATED;
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output.iPixelType = winapi::PFD_TYPE_RGBA;
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output.cColorBits = 24;
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output.cAlphaBits = 8;
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output.cAccumBits = 0;
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output.cDepthBits = 24;
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output.cStencilBits = 8;
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output.cAuxBuffers = 0;
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output.iLayerType = winapi::PFD_MAIN_PLANE;
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let pf_index = unsafe { gdi32::ChoosePixelFormat(dummy_hdc, &output) };
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if pf_index == 0 {
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tx.send(Err(OsError(format!("ChoosePixelFormat function failed: {}",
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os::error_string(os::errno() as usize)))));
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unsafe { user32::DestroyWindow(dummy_window); }
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return;
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}
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if unsafe { gdi32::DescribePixelFormat(dummy_hdc, pf_index,
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mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as winapi::UINT, &mut output) } == 0
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{
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tx.send(Err(OsError(format!("DescribePixelFormat function failed: {}",
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os::error_string(os::errno() as usize)))));
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unsafe { user32::DestroyWindow(dummy_window); }
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return;
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}
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output
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};
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// calling SetPixelFormat
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unsafe {
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if gdi32::SetPixelFormat(dummy_hdc, 1, &pixel_format) == 0 {
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tx.send(Err(OsError(format!("SetPixelFormat function failed: {}",
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os::error_string(os::errno() as usize)))));
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user32::DestroyWindow(dummy_window);
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return;
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}
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}
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// creating the dummy OpenGL context
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let dummy_context = {
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let ctxt = unsafe { gl::wgl::CreateContext(dummy_hdc as *const libc::c_void) };
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if ctxt.is_null() {
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tx.send(Err(OsError(format!("wglCreateContext function failed: {}",
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os::error_string(os::errno() as usize)))));
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unsafe { user32::DestroyWindow(dummy_window); }
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return;
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}
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ctxt
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};
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// making context current
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unsafe { gl::wgl::MakeCurrent(dummy_hdc as *const libc::c_void, dummy_context); }
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// loading the extra WGL functions
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let extra_functions = gl::wgl_extra::Wgl::load_with(|addr| {
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use libc;
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let addr = CString::from_slice(addr.as_bytes());
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let addr = addr.as_slice_with_nul().as_ptr();
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unsafe {
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gl::wgl::GetProcAddress(addr) as *const libc::c_void
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}
|
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});
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// removing current context
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unsafe { gl::wgl::MakeCurrent(ptr::null(), ptr::null()); }
|
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|
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// destroying the context and the window
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unsafe { gl::wgl::DeleteContext(dummy_context); }
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unsafe { user32::DestroyWindow(dummy_window); }
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|
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// returning the address
|
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(extra_functions, pixel_format)
|
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};
|
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|
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// creating the real window this time
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let real_window = unsafe {
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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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let style = if !builder.visible || builder.headless {
|
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style
|
||||
} else {
|
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style | winapi::WS_VISIBLE
|
||||
};
|
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|
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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,
|
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if builder.monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
|
||||
if builder.monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
|
||||
width.unwrap_or(winapi::CW_USEDEFAULT), height.unwrap_or(winapi::CW_USEDEFAULT),
|
||||
ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
|
||||
ptr::null_mut());
|
||||
|
||||
if handle.is_null() {
|
||||
use std::os;
|
||||
tx.send(Err(OsError(format!("CreateWindowEx function failed: {}",
|
||||
os::error_string(os::errno() as usize)))));
|
||||
return;
|
||||
}
|
||||
|
||||
handle
|
||||
};
|
||||
|
||||
// getting the HDC of the window
|
||||
let hdc = {
|
||||
let hdc = unsafe { user32::GetDC(real_window) };
|
||||
if hdc.is_null() {
|
||||
tx.send(Err(OsError(format!("GetDC function failed: {}",
|
||||
os::error_string(os::errno() as usize)))));
|
||||
unsafe { user32::DestroyWindow(real_window); }
|
||||
return;
|
||||
}
|
||||
hdc
|
||||
};
|
||||
|
||||
// calling SetPixelFormat
|
||||
unsafe {
|
||||
if gdi32::SetPixelFormat(hdc, 1, &pixel_format) == 0 {
|
||||
tx.send(Err(OsError(format!("SetPixelFormat function failed: {}",
|
||||
os::error_string(os::errno() as usize)))));
|
||||
user32::DestroyWindow(real_window);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
// creating the OpenGL context
|
||||
let context = {
|
||||
use libc;
|
||||
|
||||
let mut attributes = Vec::new();
|
||||
|
||||
if builder.gl_version.is_some() {
|
||||
let version = builder.gl_version.as_ref().unwrap();
|
||||
attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
|
||||
attributes.push(version.0 as libc::c_int);
|
||||
attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
|
||||
attributes.push(version.1 as libc::c_int);
|
||||
}
|
||||
|
||||
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);
|
||||
|
||||
let ctxt = unsafe {
|
||||
if extra_functions.CreateContextAttribsARB.is_loaded() {
|
||||
let share = if let Some(c) = builder_sharelists { c } else { ptr::null_mut() };
|
||||
extra_functions.CreateContextAttribsARB(hdc as *const libc::c_void,
|
||||
share as *const libc::c_void,
|
||||
attributes.as_slice().as_ptr())
|
||||
|
||||
} else {
|
||||
let ctxt = gl::wgl::CreateContext(hdc as *const libc::c_void);
|
||||
if let Some(c) = builder_sharelists {
|
||||
gl::wgl::ShareLists(c as *const libc::c_void, ctxt);
|
||||
};
|
||||
ctxt
|
||||
}
|
||||
};
|
||||
|
||||
if ctxt.is_null() {
|
||||
tx.send(Err(OsError(format!("OpenGL context creation failed: {}",
|
||||
os::error_string(os::errno() as usize)))));
|
||||
unsafe { user32::DestroyWindow(real_window); }
|
||||
return;
|
||||
}
|
||||
|
||||
ctxt
|
||||
};
|
||||
|
||||
// calling SetForegroundWindow if fullscreen
|
||||
if builder.monitor.is_some() {
|
||||
unsafe { user32::SetForegroundWindow(real_window) };
|
||||
}
|
||||
|
||||
// filling the WINDOW task-local storage
|
||||
let events_receiver = {
|
||||
let (tx, rx) = channel();
|
||||
let mut tx = Some(tx);
|
||||
callback::WINDOW.with(|window| {
|
||||
(*window.borrow_mut()) = Some((real_window, tx.take().unwrap()));
|
||||
});
|
||||
rx
|
||||
};
|
||||
|
||||
// loading the opengl32 module
|
||||
let gl_library = {
|
||||
let name = "opengl32.dll".utf16_units().chain(Some(0).into_iter())
|
||||
.collect::<Vec<u16>>().as_ptr();
|
||||
let lib = unsafe { kernel32::LoadLibraryW(name) };
|
||||
if lib.is_null() {
|
||||
tx.send(Err(OsError(format!("LoadLibrary function failed: {}",
|
||||
os::error_string(os::errno() as usize)))));
|
||||
unsafe { gl::wgl::DeleteContext(context); }
|
||||
unsafe { user32::DestroyWindow(real_window); }
|
||||
return;
|
||||
}
|
||||
lib
|
||||
};
|
||||
|
||||
// handling vsync
|
||||
if builder.vsync {
|
||||
if extra_functions.SwapIntervalEXT.is_loaded() {
|
||||
unsafe { gl::wgl::MakeCurrent(hdc as *const libc::c_void, context) };
|
||||
if unsafe { extra_functions.SwapIntervalEXT(1) } == 0 {
|
||||
tx.send(Err(OsError(format!("wglSwapIntervalEXT failed"))));
|
||||
unsafe { gl::wgl::DeleteContext(context); }
|
||||
unsafe { user32::DestroyWindow(real_window); }
|
||||
return;
|
||||
}
|
||||
|
||||
// it is important to remove the current context, otherwise you get very weird
|
||||
// errors
|
||||
unsafe { gl::wgl::MakeCurrent(ptr::null(), ptr::null()); }
|
||||
}
|
||||
}
|
||||
|
||||
// building the struct
|
||||
let window = Window{
|
||||
window: real_window,
|
||||
hdc: hdc as winapi::HDC,
|
||||
context: context as winapi::HGLRC,
|
||||
gl_library: gl_library,
|
||||
events_receiver: events_receiver,
|
||||
is_closed: AtomicBool::new(false),
|
||||
};
|
||||
|
||||
// sending
|
||||
tx.send(Ok(window));
|
||||
match init(title, builder, builder_sharelists) {
|
||||
Ok(w) => tx.send(Ok(w)).ok(),
|
||||
Err(e) => {
|
||||
tx.send(Err(e)).ok();
|
||||
return;
|
||||
}
|
||||
};
|
||||
|
||||
// now that the `Window` struct is initialized, the main `Window::new()` function will
|
||||
// return and this events loop will run in parallel
|
||||
|
|
@ -415,3 +62,454 @@ pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<C
|
|||
|
||||
rx.recv().unwrap()
|
||||
}
|
||||
|
||||
fn init(title: Vec<u16>, builder: BuilderAttribs<'static>, builder_sharelists: Option<ContextHack>)
|
||||
-> Result<Window, CreationError>
|
||||
{
|
||||
let builder_sharelists = builder_sharelists.map(|s| s.0);
|
||||
|
||||
// registering the window class
|
||||
let class_name = register_window_class();
|
||||
|
||||
// building a RECT object with coordinates
|
||||
let mut rect = winapi::RECT {
|
||||
left: 0, right: builder.dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
|
||||
top: 0, bottom: builder.dimensions.unwrap_or((1024, 768)).1 as winapi::LONG,
|
||||
};
|
||||
|
||||
// switching to fullscreen if necessary
|
||||
// this means adjusting the window's position so that it overlaps the right monitor,
|
||||
// and change the monitor's resolution if necessary
|
||||
if builder.monitor.is_some() {
|
||||
let monitor = builder.monitor.as_ref().unwrap();
|
||||
switch_to_fullscreen(&mut rect, monitor);
|
||||
}
|
||||
|
||||
// computing the style and extended style of the window
|
||||
let (ex_style, style) = if builder.monitor.is_some() {
|
||||
(winapi::WS_EX_APPWINDOW, winapi::WS_POPUP | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
|
||||
} else {
|
||||
(winapi::WS_EX_APPWINDOW | winapi::WS_EX_WINDOWEDGE,
|
||||
winapi::WS_OVERLAPPEDWINDOW | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
|
||||
};
|
||||
|
||||
// adjusting the window coordinates using the style
|
||||
unsafe { user32::AdjustWindowRectEx(&mut rect, style, 0, ex_style) };
|
||||
|
||||
// getting the address of wglCreateContextAttribsARB and the pixel format
|
||||
// that we will use
|
||||
let (extra_functions, pixel_format) = {
|
||||
// creating a dummy invisible window for GL initialization
|
||||
let dummy_window = unsafe {
|
||||
let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
|
||||
title.as_ptr() as winapi::LPCWSTR,
|
||||
style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
|
||||
winapi::CW_USEDEFAULT, winapi::CW_USEDEFAULT,
|
||||
rect.right - rect.left, rect.bottom - rect.top,
|
||||
ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
|
||||
ptr::null_mut());
|
||||
|
||||
if handle.is_null() {
|
||||
return Err(OsError(format!("CreateWindowEx function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
}
|
||||
|
||||
handle
|
||||
};
|
||||
|
||||
// getting the HDC of the dummy window
|
||||
let dummy_hdc = {
|
||||
let hdc = unsafe { user32::GetDC(dummy_window) };
|
||||
if hdc.is_null() {
|
||||
let err = Err(OsError(format!("GetDC function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
unsafe { user32::DestroyWindow(dummy_window); }
|
||||
return err;
|
||||
}
|
||||
hdc
|
||||
};
|
||||
|
||||
// getting the pixel format that we will use
|
||||
let pixel_format = {
|
||||
let formats = enumerate_native_pixel_formats(dummy_hdc);
|
||||
let (id, _) = builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a)));
|
||||
|
||||
let mut output: winapi::PIXELFORMATDESCRIPTOR = unsafe { mem::zeroed() };
|
||||
if unsafe { gdi32::DescribePixelFormat(dummy_hdc, id,
|
||||
mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as winapi::UINT, &mut output) } == 0
|
||||
{
|
||||
let err = Err(OsError(format!("DescribePixelFormat function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
unsafe { user32::DestroyWindow(dummy_window); }
|
||||
return err;
|
||||
}
|
||||
|
||||
output
|
||||
};
|
||||
|
||||
// calling SetPixelFormat
|
||||
unsafe {
|
||||
if gdi32::SetPixelFormat(dummy_hdc, 1, &pixel_format) == 0 {
|
||||
let err = Err(OsError(format!("SetPixelFormat function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
user32::DestroyWindow(dummy_window);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
// creating the dummy OpenGL context
|
||||
let dummy_context = try!(create_context(None, dummy_hdc, None));
|
||||
|
||||
// making context current
|
||||
unsafe { gl::wgl::MakeCurrent(dummy_hdc as *const libc::c_void, dummy_context as *const libc::c_void); }
|
||||
|
||||
// loading the extra WGL functions
|
||||
let extra_functions = gl::wgl_extra::Wgl::load_with(|addr| {
|
||||
use libc;
|
||||
|
||||
let addr = CString::from_slice(addr.as_bytes());
|
||||
let addr = addr.as_slice_with_nul().as_ptr();
|
||||
|
||||
unsafe {
|
||||
gl::wgl::GetProcAddress(addr) as *const libc::c_void
|
||||
}
|
||||
});
|
||||
|
||||
// removing current context
|
||||
unsafe { gl::wgl::MakeCurrent(ptr::null(), ptr::null()); }
|
||||
|
||||
// destroying the context and the window
|
||||
unsafe { gl::wgl::DeleteContext(dummy_context as *const libc::c_void); }
|
||||
unsafe { user32::DestroyWindow(dummy_window); }
|
||||
|
||||
// returning the address
|
||||
(extra_functions, pixel_format)
|
||||
};
|
||||
|
||||
// creating the real window this time
|
||||
let real_window = unsafe {
|
||||
let (width, height) = if builder.monitor.is_some() || builder.dimensions.is_some() {
|
||||
(Some(rect.right - rect.left), Some(rect.bottom - rect.top))
|
||||
} else {
|
||||
(None, None)
|
||||
};
|
||||
|
||||
let style = if !builder.visible || builder.headless {
|
||||
style
|
||||
} else {
|
||||
style | winapi::WS_VISIBLE
|
||||
};
|
||||
|
||||
let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
|
||||
title.as_ptr() as winapi::LPCWSTR,
|
||||
style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
|
||||
if builder.monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
|
||||
if builder.monitor.is_some() { 0 } else { winapi::CW_USEDEFAULT },
|
||||
width.unwrap_or(winapi::CW_USEDEFAULT), height.unwrap_or(winapi::CW_USEDEFAULT),
|
||||
ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
|
||||
ptr::null_mut());
|
||||
|
||||
if handle.is_null() {
|
||||
return Err(OsError(format!("CreateWindowEx function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
}
|
||||
|
||||
handle
|
||||
};
|
||||
|
||||
// getting the HDC of the window
|
||||
let hdc = {
|
||||
let hdc = unsafe { user32::GetDC(real_window) };
|
||||
if hdc.is_null() {
|
||||
let err = Err(OsError(format!("GetDC function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
unsafe { user32::DestroyWindow(real_window); }
|
||||
return err;
|
||||
}
|
||||
hdc
|
||||
};
|
||||
|
||||
// calling SetPixelFormat
|
||||
unsafe {
|
||||
if gdi32::SetPixelFormat(hdc, 1, &pixel_format) == 0 {
|
||||
let err = Err(OsError(format!("SetPixelFormat function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
user32::DestroyWindow(real_window);
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
// creating the OpenGL context
|
||||
let context = try!(create_context(Some((&extra_functions, &builder)), hdc, builder_sharelists));
|
||||
|
||||
// calling SetForegroundWindow if fullscreen
|
||||
if builder.monitor.is_some() {
|
||||
unsafe { user32::SetForegroundWindow(real_window) };
|
||||
}
|
||||
|
||||
// filling the WINDOW task-local storage
|
||||
let events_receiver = {
|
||||
let (tx, rx) = channel();
|
||||
let mut tx = Some(tx);
|
||||
callback::WINDOW.with(|window| {
|
||||
(*window.borrow_mut()) = Some((real_window, tx.take().unwrap()));
|
||||
});
|
||||
rx
|
||||
};
|
||||
|
||||
// loading the opengl32 module
|
||||
let gl_library = try!(load_opengl32_dll());
|
||||
|
||||
// handling vsync
|
||||
if builder.vsync {
|
||||
if extra_functions.SwapIntervalEXT.is_loaded() {
|
||||
unsafe { gl::wgl::MakeCurrent(hdc as *const libc::c_void, context as *const libc::c_void) };
|
||||
if unsafe { extra_functions.SwapIntervalEXT(1) } == 0 {
|
||||
unsafe { gl::wgl::DeleteContext(context as *const libc::c_void); }
|
||||
unsafe { user32::DestroyWindow(real_window); }
|
||||
return Err(OsError(format!("wglSwapIntervalEXT failed")));
|
||||
}
|
||||
|
||||
// it is important to remove the current context, otherwise you get very weird
|
||||
// errors
|
||||
unsafe { gl::wgl::MakeCurrent(ptr::null(), ptr::null()); }
|
||||
}
|
||||
}
|
||||
|
||||
// building the struct
|
||||
Ok(Window {
|
||||
window: real_window,
|
||||
hdc: hdc as winapi::HDC,
|
||||
context: context,
|
||||
gl_library: gl_library,
|
||||
events_receiver: events_receiver,
|
||||
is_closed: AtomicBool::new(false),
|
||||
})
|
||||
}
|
||||
|
||||
fn register_window_class() -> Vec<u16> {
|
||||
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,
|
||||
lpfnWndProc: callback::callback,
|
||||
cbClsExtra: 0,
|
||||
cbWndExtra: 0,
|
||||
hInstance: unsafe { kernel32::GetModuleHandleW(ptr::null()) },
|
||||
hIcon: ptr::null_mut(),
|
||||
hCursor: ptr::null_mut(),
|
||||
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.
|
||||
unsafe { user32::RegisterClassExW(&class) };
|
||||
|
||||
class_name
|
||||
}
|
||||
|
||||
fn switch_to_fullscreen(rect: &mut winapi::RECT, monitor: &MonitorID) -> Result<(), CreationError> {
|
||||
// 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
|
||||
let mut screen_settings: winapi::DEVMODEW = unsafe { mem::zeroed() };
|
||||
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;
|
||||
|
||||
let result = unsafe { user32::ChangeDisplaySettingsExW(monitor.get_system_name().as_ptr(),
|
||||
&mut screen_settings, ptr::null_mut(), winapi::CDS_FULLSCREEN, ptr::null_mut()) };
|
||||
|
||||
if result != winapi::DISP_CHANGE_SUCCESSFUL {
|
||||
return Err(OsError(format!("ChangeDisplaySettings failed: {}", result)));
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn create_context(extra: Option<(&gl::wgl_extra::Wgl, &BuilderAttribs<'static>)>,
|
||||
hdc: winapi::HDC, share: Option<winapi::HGLRC>)
|
||||
-> Result<winapi::HGLRC, CreationError>
|
||||
{
|
||||
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();
|
||||
|
||||
if builder.gl_version.is_some() {
|
||||
let version = builder.gl_version.as_ref().unwrap();
|
||||
attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
|
||||
attributes.push(version.0 as libc::c_int);
|
||||
attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
|
||||
attributes.push(version.1 as libc::c_int);
|
||||
}
|
||||
|
||||
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);
|
||||
|
||||
Some(unsafe {
|
||||
extra_functions.CreateContextAttribsARB(hdc as *const libc::c_void,
|
||||
share as *const libc::c_void,
|
||||
attributes.as_slice().as_ptr())
|
||||
})
|
||||
} else {
|
||||
None
|
||||
}
|
||||
} else {
|
||||
None
|
||||
};
|
||||
|
||||
let ctxt = match ctxt {
|
||||
Some(ctxt) => ctxt,
|
||||
None => {
|
||||
unsafe {
|
||||
let ctxt = gl::wgl::CreateContext(hdc as *const libc::c_void);
|
||||
if !share.is_null() {
|
||||
gl::wgl::ShareLists(share as *const libc::c_void, ctxt);
|
||||
};
|
||||
ctxt
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
if ctxt.is_null() {
|
||||
return Err(OsError(format!("OpenGL context creation failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
}
|
||||
|
||||
Ok(ctxt as winapi::HGLRC)
|
||||
}
|
||||
|
||||
fn enumerate_native_pixel_formats(hdc: winapi::HDC) -> Vec<(PixelFormat, libc::c_int)> {
|
||||
let size_of_pxfmtdescr = mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as u32;
|
||||
let num = unsafe { gdi32::DescribePixelFormat(hdc, 1, size_of_pxfmtdescr, ptr::null_mut()) };
|
||||
|
||||
let mut result = Vec::new();
|
||||
|
||||
for index in (0 .. num) {
|
||||
let mut output: winapi::PIXELFORMATDESCRIPTOR = unsafe { mem::zeroed() };
|
||||
|
||||
if unsafe { gdi32::DescribePixelFormat(hdc, index, size_of_pxfmtdescr,
|
||||
&mut output) } == 0
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if (output.dwFlags & winapi::PFD_DRAW_TO_WINDOW) == 0 {
|
||||
continue;
|
||||
}
|
||||
if (output.dwFlags & winapi::PFD_SUPPORT_OPENGL) == 0 {
|
||||
continue;
|
||||
}
|
||||
|
||||
if (output.dwFlags & winapi::PFD_GENERIC_ACCELERATED) == 0 &&
|
||||
(output.dwFlags & winapi::PFD_GENERIC_FORMAT) == 0
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
if output.iPixelType != winapi::PFD_TYPE_RGBA {
|
||||
continue;
|
||||
}
|
||||
|
||||
result.push((PixelFormat {
|
||||
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
|
||||
}
|
||||
|
||||
fn enumerate_arb_pixel_formats(extra: &gl::wgl_extra::Wgl, hdc: winapi::HDC)
|
||||
-> Vec<(PixelFormat, libc::c_int)>
|
||||
{
|
||||
let get_info = |index: u32, attrib: u32| {
|
||||
let mut value = unsafe { mem::uninitialized() };
|
||||
unsafe { extra.GetPixelFormatAttribivARB(hdc as *const libc::c_void, index as libc::c_int,
|
||||
0, 1, [attrib as libc::c_int].as_ptr(),
|
||||
&mut value) };
|
||||
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 {
|
||||
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
|
||||
}
|
||||
|
||||
fn load_opengl32_dll() -> Result<winapi::HMODULE, CreationError> {
|
||||
let name = "opengl32.dll".utf16_units().chain(Some(0).into_iter())
|
||||
.collect::<Vec<u16>>().as_ptr();
|
||||
|
||||
let lib = unsafe { kernel32::LoadLibraryW(name) };
|
||||
|
||||
if lib.is_null() {
|
||||
return Err(OsError(format!("LoadLibrary function failed: {}",
|
||||
os::error_string(os::errno() as usize))));
|
||||
}
|
||||
|
||||
Ok(lib)
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue