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authorTomaka17 <pierre.krieger1708@gmail.com>2014-10-26 10:32:51 +0100
committerTomaka17 <pierre.krieger1708@gmail.com>2014-10-26 16:35:24 +0100
commit8249e545f8d582cc3a99ddab3ab7c998c152cb3a (patch)
treea3d9647aa90deaf5725125f9b7452cf25c82d445
parente887cf57b8177f28d4307f7d092f158fac09ef15 (diff)
downloadglutin-8249e545f8d582cc3a99ddab3ab7c998c152cb3a.tar.gz
glutin-8249e545f8d582cc3a99ddab3ab7c998c152cb3a.zip
Add `with_vsync` to WindowBuilder, plus the win32 implementation
-rw-r--r--src/lib.rs12
-rw-r--r--src/win32/ffi.rs3
-rw-r--r--src/win32/init.rs10
-rw-r--r--src/win32/mod.rs6
4 files changed, 26 insertions, 5 deletions
diff --git a/src/lib.rs b/src/lib.rs
index da92cc2..8f9dbf5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -73,6 +73,7 @@ pub struct WindowBuilder {
title: String,
monitor: Option<winimpl::MonitorID>,
gl_version: Option<(uint, uint)>,
+ vsync: bool,
}
#[cfg(feature = "window")]
@@ -84,6 +85,7 @@ impl WindowBuilder {
title: "gl-init-rs window".to_string(),
monitor: None,
gl_version: None,
+ vsync: false,
}
}
@@ -119,6 +121,12 @@ impl WindowBuilder {
self
}
+ /// Requests that the window has vsync enabled.
+ pub fn with_vsync(mut self) -> WindowBuilder {
+ self.vsync = true;
+ self
+ }
+
/// Builds the window.
///
/// Error should be very rare and only occur in case of permission denied, incompatible system,
@@ -339,6 +347,10 @@ impl Window {
///
/// You should call this function every time you have finished rendering, or the image
/// may not be displayed on the screen.
+ ///
+ /// **Warning**: if you enabled vsync, this function will block until the next time the screen
+ /// is refreshed. However drivers can choose to override your vsync settings, which means that
+ /// you can't know in advance whether `swap_buffers` will block or not.
#[inline]
pub fn swap_buffers(&self) {
self.window.swap_buffers()
diff --git a/src/win32/ffi.rs b/src/win32/ffi.rs
index 317935d..71f8d55 100644
--- a/src/win32/ffi.rs
+++ b/src/win32/ffi.rs
@@ -23,7 +23,8 @@ pub mod wgl_extra {
version: "1.0",
generator: "struct",
extensions: [
- "WGL_ARB_create_context"
+ "WGL_ARB_create_context",
+ "WGL_EXT_swap_control"
]
}
}
diff --git a/src/win32/init.rs b/src/win32/init.rs
index 36bf639..ca99da8 100644
--- a/src/win32/init.rs
+++ b/src/win32/init.rs
@@ -16,7 +16,7 @@ local_data_key!(WINDOW: (ffi::HWND, Sender<Event>))
pub fn new_window(builder_dimensions: Option<(uint, uint)>, builder_title: String,
builder_monitor: Option<super::MonitorID>,
- builder_gl_version: Option<(uint, uint)>,
+ builder_gl_version: Option<(uint, uint)>, builder_vsync: bool,
builder_headless: bool) -> Result<Window, String>
{
use std::mem;
@@ -346,6 +346,14 @@ pub fn new_window(builder_dimensions: Option<(uint, uint)>, builder_title: Strin
lib
};
+ // handling vsync
+ if builder_vsync {
+ if extra_functions.SwapIntervalEXT.is_loaded() {
+ unsafe { ffi::wgl::MakeCurrent(hdc, context) };
+ extra_functions.SwapIntervalEXT(1);
+ }
+ }
+
// building the struct
let window = Window{
window: real_window,
diff --git a/src/win32/mod.rs b/src/win32/mod.rs
index 33d0600..3cfdc7e 100644
--- a/src/win32/mod.rs
+++ b/src/win32/mod.rs
@@ -25,7 +25,7 @@ impl HeadlessContext {
/// See the docs in the crate root file.
pub fn new(builder: HeadlessRendererBuilder) -> Result<HeadlessContext, String> {
let HeadlessRendererBuilder { dimensions, gl_version } = builder;
- init::new_window(Some(dimensions), "".to_string(), None, gl_version, true)
+ init::new_window(Some(dimensions), "".to_string(), None, gl_version, false, true)
.map(|w| HeadlessContext(w))
}
@@ -68,8 +68,8 @@ pub struct Window {
impl Window {
/// See the docs in the crate root file.
pub fn new(builder: WindowBuilder) -> Result<Window, String> {
- let WindowBuilder { dimensions, title, monitor, gl_version } = builder;
- init::new_window(dimensions, title, monitor, gl_version, false)
+ let WindowBuilder { dimensions, title, monitor, gl_version, vsync } = builder;
+ init::new_window(dimensions, title, monitor, gl_version, vsync, false)
}
}