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-rw-r--r--src/api/win32/gl.rs12
-rw-r--r--src/api/win32/init.rs382
-rw-r--r--src/api/win32/make_current_guard.rs52
-rw-r--r--src/api/win32/mod.rs55
4 files changed, 19 insertions, 482 deletions
diff --git a/src/api/win32/gl.rs b/src/api/win32/gl.rs
deleted file mode 100644
index 1354d95..0000000
--- a/src/api/win32/gl.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-/// WGL bindings
-pub mod wgl {
- include!(concat!(env!("OUT_DIR"), "/wgl_bindings.rs"));
-}
-
-/// Functions that are not necessarly always available
-pub mod wgl_extra {
- include!(concat!(env!("OUT_DIR"), "/wgl_extra_bindings.rs"));
-}
-
-#[link(name = "opengl32")]
-extern {}
diff --git a/src/api/win32/init.rs b/src/api/win32/init.rs
index e5b0b3a..9223105 100644
--- a/src/api/win32/init.rs
+++ b/src/api/win32/init.rs
@@ -8,37 +8,32 @@ use std::thread;
use super::callback;
use super::Window;
use super::MonitorID;
-use super::ContextWrapper;
use super::WindowWrapper;
-use super::make_current_guard::CurrentContextGuard;
-use Api;
use BuilderAttribs;
use CreationError;
use CreationError::OsError;
use CursorState;
-use GlProfile;
-use GlRequest;
-use PixelFormat;
-use std::ffi::{CStr, CString, OsStr};
+use std::ffi::OsStr;
use std::os::windows::ffi::OsStrExt;
use std::sync::mpsc::channel;
-use libc;
-use super::gl;
use winapi;
use kernel32;
use user32;
-use gdi32;
+
+use api::wgl::{self, Context};
/// Work-around the fact that HGLRC doesn't implement Send
-pub struct ContextHack(pub winapi::HGLRC);
+struct ContextHack(winapi::HGLRC);
unsafe impl Send for ContextHack {}
-pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<ContextHack>)
+pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<winapi::HGLRC>)
-> Result<Window, CreationError>
{
+ let builder_sharelists = builder_sharelists.map(|s| ContextHack(s));
+
// initializing variables to be sent to the task
let title = OsStr::new(&builder.title).encode_wide().chain(Some(0).into_iter())
@@ -110,57 +105,6 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
// adjusting the window coordinates using the style
user32::AdjustWindowRectEx(&mut rect, style, 0, ex_style);
- // the first step is to create a dummy window and a dummy context which we will use
- // to load the pointers to some functions in the OpenGL driver in `extra_functions`
- let extra_functions = {
- // creating a dummy invisible window
- let dummy_window = {
- 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: {}",
- format!("{}", io::Error::last_os_error()))));
- }
-
- let hdc = user32::GetDC(handle);
- if hdc.is_null() {
- let err = Err(OsError(format!("GetDC function failed: {}",
- format!("{}", io::Error::last_os_error()))));
- return err;
- }
-
- WindowWrapper(handle, hdc)
- };
-
- // getting the pixel format that we will use and setting it
- {
- let formats = enumerate_native_pixel_formats(&dummy_window);
- let id = try!(choose_dummy_pixel_format(formats.into_iter()));
- try!(set_pixel_format(&dummy_window, id));
- }
-
- // creating the dummy OpenGL context and making it current
- let dummy_context = try!(create_context(None, &dummy_window, None));
- let current_context = try!(CurrentContextGuard::make_current(&dummy_window,
- &dummy_context));
-
- // loading the extra WGL functions
- gl::wgl_extra::Wgl::load_with(|addr| {
- use libc;
-
- let addr = CString::new(addr.as_bytes()).unwrap();
- let addr = addr.as_ptr();
-
- gl::wgl::GetProcAddress(addr) as *const libc::c_void
- })
- };
-
// creating the real window this time, by using the functions in `extra_functions`
let real_window = {
let (width, height) = if builder.monitor.is_some() || builder.dimensions.is_some() {
@@ -203,27 +147,8 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
WindowWrapper(handle, hdc)
};
- // calling SetPixelFormat
- let pixel_format = {
- let formats = if extra_functions.GetPixelFormatAttribivARB.is_loaded() {
- let f = enumerate_arb_pixel_formats(&extra_functions, &real_window);
- if f.is_empty() {
- enumerate_native_pixel_formats(&real_window)
- } else {
- f
- }
- } else {
- enumerate_native_pixel_formats(&real_window)
- };
-
- let (id, f) = try!(builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a))));
- try!(set_pixel_format(&real_window, id));
- f
- };
-
- // creating the OpenGL context
- let context = try!(create_context(Some((&extra_functions, &builder)), &real_window,
- builder_sharelists));
+ //
+ let context = try!(wgl::Context::new(&builder, real_window.0, builder_sharelists));
// calling SetForegroundWindow if fullscreen
if builder.monitor.is_some() {
@@ -248,29 +173,13 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
rx
};
- // loading the opengl32 module
- let gl_library = try!(load_opengl32_dll());
-
- // handling vsync
- if builder.vsync {
- if extra_functions.SwapIntervalEXT.is_loaded() {
- let _guard = try!(CurrentContextGuard::make_current(&real_window, &context));
-
- if extra_functions.SwapIntervalEXT(1) == 0 {
- return Err(OsError(format!("wglSwapIntervalEXT failed")));
- }
- }
- }
-
// building the struct
Ok(Window {
window: real_window,
context: context,
- gl_library: gl_library,
events_receiver: events_receiver,
is_closed: AtomicBool::new(false),
cursor_state: cursor_state,
- pixel_format: pixel_format,
})
}
@@ -332,276 +241,3 @@ unsafe fn switch_to_fullscreen(rect: &mut winapi::RECT, monitor: &MonitorID)
Ok(())
}
-
-unsafe fn create_context(extra: Option<(&gl::wgl_extra::Wgl, &BuilderAttribs<'static>)>,
- hdc: &WindowWrapper, share: Option<winapi::HGLRC>)
- -> Result<ContextWrapper, 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();
-
- 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(Api::OpenGlEs, (major, minor)) => {
- if is_extension_supported(extra_functions, hdc,
- "WGL_EXT_create_context_es2_profile")
- {
- attributes.push(gl::wgl_extra::CONTEXT_PROFILE_MASK_ARB as libc::c_int);
- attributes.push(gl::wgl_extra::CONTEXT_ES2_PROFILE_BIT_EXT as libc::c_int);
- } else {
- return Err(CreationError::NotSupported);
- }
-
- 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(_, _) => return Err(CreationError::NotSupported),
- 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);
- },
- }
-
- if let Some(profile) = builder.gl_profile {
- if is_extension_supported(extra_functions, hdc,
- "WGL_ARB_create_context_profile")
- {
- let flag = match profile {
- GlProfile::Compatibility =>
- gl::wgl_extra::CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB,
- GlProfile::Core =>
- gl::wgl_extra::CONTEXT_CORE_PROFILE_BIT_ARB,
- };
- attributes.push(gl::wgl_extra::CONTEXT_PROFILE_MASK_ARB as libc::c_int);
- attributes.push(flag as libc::c_int);
- } else {
- return Err(CreationError::NotSupported);
- }
- }
-
- 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(extra_functions.CreateContextAttribsARB(hdc.1 as *const libc::c_void,
- share as *const libc::c_void,
- attributes.as_ptr()))
-
- } else {
- None
- }
- } else {
- None
- };
-
- let ctxt = match ctxt {
- Some(ctxt) => ctxt,
- None => {
- let ctxt = gl::wgl::CreateContext(hdc.1 as *const libc::c_void);
- if !ctxt.is_null() && !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: {}",
- format!("{}", io::Error::last_os_error()))));
- }
-
- Ok(ContextWrapper(ctxt as winapi::HGLRC))
-}
-
-unsafe fn enumerate_native_pixel_formats(hdc: &WindowWrapper) -> Vec<(PixelFormat, libc::c_int)> {
- let size_of_pxfmtdescr = mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as u32;
- let num = gdi32::DescribePixelFormat(hdc.1, 1, size_of_pxfmtdescr, ptr::null_mut());
-
- let mut result = Vec::new();
-
- for index in (0 .. num) {
- let mut output: winapi::PIXELFORMATDESCRIPTOR = mem::zeroed();
-
- if gdi32::DescribePixelFormat(hdc.1, 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.iPixelType != winapi::PFD_TYPE_RGBA {
- continue;
- }
-
- result.push((PixelFormat {
- hardware_accelerated: (output.dwFlags & winapi::PFD_GENERIC_FORMAT) == 0,
- color_bits: output.cRedBits + output.cGreenBits + 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
-}
-
-unsafe fn enumerate_arb_pixel_formats(extra: &gl::wgl_extra::Wgl, hdc: &WindowWrapper)
- -> Vec<(PixelFormat, libc::c_int)>
-{
- let get_info = |index: u32, attrib: u32| {
- let mut value = mem::uninitialized();
- extra.GetPixelFormatAttribivARB(hdc.1 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 {
- hardware_accelerated: true,
- color_bits: get_info(index, gl::wgl_extra::RED_BITS_ARB) as u8 +
- get_info(index, gl::wgl_extra::GREEN_BITS_ARB) as u8 +
- 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: {
- if is_extension_supported(extra, hdc, "WGL_ARB_multisample") {
- match get_info(index, gl::wgl_extra::SAMPLES_ARB) {
- 0 => None,
- a => Some(a as u16),
- }
- } else {
- None
- }
- },
- srgb: if is_extension_supported(extra, hdc, "WGL_ARB_framebuffer_sRGB") {
- get_info(index, gl::wgl_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB) != 0
- } else if is_extension_supported(extra, hdc, "WGL_EXT_framebuffer_sRGB") {
- get_info(index, gl::wgl_extra::FRAMEBUFFER_SRGB_CAPABLE_EXT) != 0
- } else {
- false
- },
- }, index as libc::c_int));
- }
-
- result
-}
-
-unsafe fn set_pixel_format(hdc: &WindowWrapper, id: libc::c_int) -> Result<(), CreationError> {
- let mut output: winapi::PIXELFORMATDESCRIPTOR = mem::zeroed();
-
- if gdi32::DescribePixelFormat(hdc.1, id, mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>()
- as winapi::UINT, &mut output) == 0
- {
- return Err(OsError(format!("DescribePixelFormat function failed: {}",
- format!("{}", io::Error::last_os_error()))));
- }
-
- if gdi32::SetPixelFormat(hdc.1, id, &output) == 0 {
- return Err(OsError(format!("SetPixelFormat function failed: {}",
- format!("{}", io::Error::last_os_error()))));
- }
-
- Ok(())
-}
-
-unsafe fn load_opengl32_dll() -> Result<winapi::HMODULE, CreationError> {
- let name = OsStr::new("opengl32.dll").encode_wide().chain(Some(0).into_iter())
- .collect::<Vec<_>>();
-
- let lib = kernel32::LoadLibraryW(name.as_ptr());
-
- if lib.is_null() {
- return Err(OsError(format!("LoadLibrary function failed: {}",
- format!("{}", io::Error::last_os_error()))));
- }
-
- Ok(lib)
-}
-
-unsafe fn is_extension_supported(extra: &gl::wgl_extra::Wgl, hdc: &WindowWrapper,
- extension: &str) -> bool
-{
- let extensions = if extra.GetExtensionsStringARB.is_loaded() {
- let data = extra.GetExtensionsStringARB(hdc.1 as *const _);
- let data = CStr::from_ptr(data).to_bytes().to_vec();
- String::from_utf8(data).unwrap()
-
- } else if extra.GetExtensionsStringEXT.is_loaded() {
- let data = extra.GetExtensionsStringEXT();
- let data = CStr::from_ptr(data).to_bytes().to_vec();
- String::from_utf8(data).unwrap()
-
- } else {
- return false;
- };
-
- extensions.split(" ").find(|&e| e == extension).is_some()
-}
-
-fn choose_dummy_pixel_format<I>(iter: I) -> Result<libc::c_int, CreationError>
- where I: Iterator<Item=(PixelFormat, libc::c_int)>
-{
- let mut backup_id = None;
-
- for (format, id) in iter {
- if backup_id.is_none() {
- backup_id = Some(id);
- }
-
- if format.hardware_accelerated {
- return Ok(id);
- }
- }
-
- backup_id.ok_or(CreationError::NotSupported)
-}
diff --git a/src/api/win32/make_current_guard.rs b/src/api/win32/make_current_guard.rs
deleted file mode 100644
index 8983899..0000000
--- a/src/api/win32/make_current_guard.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-use std::marker::PhantomData;
-use std::io;
-
-use libc;
-use winapi;
-use CreationError;
-
-use super::gl;
-use super::ContextWrapper;
-use super::WindowWrapper;
-
-/// A guard for when you want to make the context current. Destroying the guard restores the
-/// previously-current context.
-pub struct CurrentContextGuard<'a, 'b> {
- previous_hdc: winapi::HDC,
- previous_hglrc: winapi::HGLRC,
- marker1: PhantomData<&'a ()>,
- marker2: PhantomData<&'b ()>,
-}
-
-impl<'a, 'b> CurrentContextGuard<'a, 'b> {
- pub unsafe fn make_current(window: &'a WindowWrapper, context: &'b ContextWrapper)
- -> Result<CurrentContextGuard<'a, 'b>, CreationError>
- {
- let previous_hdc = gl::wgl::GetCurrentDC() as winapi::HDC;
- let previous_hglrc = gl::wgl::GetCurrentContext() as winapi::HGLRC;
-
- let result = gl::wgl::MakeCurrent(window.1 as *const libc::c_void,
- context.0 as *const libc::c_void);
-
- if result == 0 {
- return Err(CreationError::OsError(format!("wglMakeCurrent function failed: {}",
- format!("{}", io::Error::last_os_error()))));
- }
-
- Ok(CurrentContextGuard {
- previous_hdc: previous_hdc,
- previous_hglrc: previous_hglrc,
- marker1: PhantomData,
- marker2: PhantomData,
- })
- }
-}
-
-impl<'a, 'b> Drop for CurrentContextGuard<'a, 'b> {
- fn drop(&mut self) {
- unsafe {
- gl::wgl::MakeCurrent(self.previous_hdc as *const libc::c_void,
- self.previous_hglrc as *const libc::c_void);
- }
- }
-}
diff --git a/src/api/win32/mod.rs b/src/api/win32/mod.rs
index d0caea7..ff42408 100644
--- a/src/api/win32/mod.rs
+++ b/src/api/win32/mod.rs
@@ -3,7 +3,6 @@
use std::sync::atomic::AtomicBool;
use std::mem;
use std::ptr;
-use std::ffi::CString;
use std::ffi::OsStr;
use std::os::windows::ffi::OsStrExt;
use std::sync::{
@@ -25,13 +24,12 @@ pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor};
use winapi;
use user32;
use kernel32;
-use gdi32;
+
+use api::wgl;
mod callback;
mod event;
-mod gl;
mod init;
-mod make_current_guard;
mod monitor;
/// The Win32 implementation of the main `Window` object.
@@ -40,13 +38,7 @@ pub struct Window {
window: WindowWrapper,
/// OpenGL context.
- context: ContextWrapper,
-
- /// Binded to `opengl32.dll`.
- ///
- /// `wglGetProcAddress` returns null for GL 1.1 functions because they are
- /// already defined by the system. This module contains them.
- gl_library: winapi::HMODULE,
+ context: wgl::Context,
/// Receiver for the events dispatched by the window callback.
events_receiver: Receiver<Event>,
@@ -56,27 +48,11 @@ pub struct Window {
/// The current cursor state.
cursor_state: Arc<Mutex<CursorState>>,
-
- /// The pixel format that has been used to create this window.
- pixel_format: PixelFormat,
}
unsafe impl Send for Window {}
unsafe impl Sync for Window {}
-/// A simple wrapper that destroys the context when it is destroyed.
-// FIXME: remove `pub` (https://github.com/rust-lang/rust/issues/23585)
-#[doc(hidden)]
-pub struct ContextWrapper(pub winapi::HGLRC);
-
-impl Drop for ContextWrapper {
- fn drop(&mut self) {
- unsafe {
- gl::wgl::DeleteContext(self.0 as *const libc::c_void);
- }
- }
-}
-
/// A simple wrapper that destroys the window when it is destroyed.
// FIXME: remove `pub` (https://github.com/rust-lang/rust/issues/23585)
#[doc(hidden)]
@@ -103,7 +79,7 @@ impl Window {
/// See the docs in the crate root file.
pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
let (builder, sharing) = builder.extract_non_static();
- let sharing = sharing.map(|w| init::ContextHack(w.context.0));
+ let sharing = sharing.map(|w| w.context.get_hglrc());
init::new_window(builder, sharing)
}
@@ -326,38 +302,27 @@ impl Window {
impl GlContext for Window {
unsafe fn make_current(&self) {
- // TODO: check return value
- gl::wgl::MakeCurrent(self.window.1 as *const libc::c_void,
- self.context.0 as *const libc::c_void);
+ self.context.make_current()
}
fn is_current(&self) -> bool {
- unsafe { gl::wgl::GetCurrentContext() == self.context.0 as *const libc::c_void }
+ self.context.is_current()
}
fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
- let addr = CString::new(addr.as_bytes()).unwrap();
- let addr = addr.as_ptr();
-
- unsafe {
- let p = gl::wgl::GetProcAddress(addr) as *const _;
- if !p.is_null() { return p; }
- kernel32::GetProcAddress(self.gl_library, addr) as *const _
- }
+ self.context.get_proc_address(addr)
}
fn swap_buffers(&self) {
- unsafe {
- gdi32::SwapBuffers(self.window.1);
- }
+ self.context.swap_buffers()
}
fn get_api(&self) -> Api {
- Api::OpenGl
+ self.context.get_api()
}
fn get_pixel_format(&self) -> PixelFormat {
- self.pixel_format.clone()
+ self.context.get_pixel_format()
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-04 00:05:21 +0000