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-rw-r--r--src/api/android/mod.rs5
-rw-r--r--src/api/caca/mod.rs7
-rw-r--r--src/api/cocoa/headless.rs8
-rw-r--r--src/api/cocoa/mod.rs7
-rw-r--r--src/api/egl/mod.rs23
-rw-r--r--src/api/emscripten/mod.rs11
-rw-r--r--src/api/glx/mod.rs13
-rw-r--r--src/api/osmesa/mod.rs18
-rw-r--r--src/api/wayland/mod.rs6
-rw-r--r--src/api/wgl/mod.rs18
-rw-r--r--src/api/win32/mod.rs5
-rw-r--r--src/api/x11/window.rs9
-rw-r--r--src/headless.rs7
-rw-r--r--src/lib.rs15
-rw-r--r--src/platform/android/mod.rs4
-rw-r--r--src/platform/emscripten/mod.rs5
-rw-r--r--src/platform/linux/api_dispatch.rs5
-rw-r--r--src/platform/linux/mod.rs5
-rw-r--r--src/platform/windows/mod.rs5
-rw-r--r--src/window.rs9
20 files changed, 123 insertions, 62 deletions
diff --git a/src/api/android/mod.rs b/src/api/android/mod.rs
index d1281e3..1649772 100644
--- a/src/api/android/mod.rs
+++ b/src/api/android/mod.rs
@@ -15,6 +15,7 @@ use std::collections::VecDeque;
use Api;
use BuilderAttribs;
+use ContextError;
use CursorState;
use GlContext;
use GlRequest;
@@ -213,7 +214,7 @@ unsafe impl Send for Window {}
unsafe impl Sync for Window {}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.context.make_current()
}
@@ -225,7 +226,7 @@ impl GlContext for Window {
self.context.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.context.swap_buffers()
}
diff --git a/src/api/caca/mod.rs b/src/api/caca/mod.rs
index 06a6931..4c54434 100644
--- a/src/api/caca/mod.rs
+++ b/src/api/caca/mod.rs
@@ -6,6 +6,7 @@ use api::osmesa::{OsMesaContext, OsMesaCreationError};
use Api;
use BuilderAttribs;
+use ContextError;
use CreationError;
use Event;
use GlContext;
@@ -209,7 +210,7 @@ impl Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.opengl.make_current()
}
@@ -221,7 +222,7 @@ impl GlContext for Window {
self.opengl.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
unsafe {
let canvas = (self.libcaca.caca_get_canvas)(self.display);
let width = (self.libcaca.caca_get_canvas_width)(canvas);
@@ -235,6 +236,8 @@ impl GlContext for Window {
buffer.as_ptr() as *const _);
(self.libcaca.caca_refresh_display)(self.display);
};
+
+ Ok(())
}
fn get_api(&self) -> Api {
diff --git a/src/api/cocoa/headless.rs b/src/api/cocoa/headless.rs
index 75cca8d..7cd0f88 100644
--- a/src/api/cocoa/headless.rs
+++ b/src/api/cocoa/headless.rs
@@ -1,3 +1,4 @@
+use ContextError;
use CreationError;
use CreationError::OsError;
use BuilderAttribs;
@@ -61,7 +62,7 @@ impl HeadlessContext {
}
impl GlContext for HeadlessContext {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.context.makeCurrentContext();
gl::GenFramebuffersEXT(1, &mut framebuffer);
@@ -78,6 +79,8 @@ impl GlContext for HeadlessContext {
if status != gl::FRAMEBUFFER_COMPLETE_EXT {
panic!("Error while creating the framebuffer");
}
+
+ Ok(())
}
fn is_current(&self) -> bool {
@@ -96,7 +99,8 @@ impl GlContext for HeadlessContext {
symbol as *const libc::c_void
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
+ Ok(())
}
fn get_api(&self) -> ::Api {
diff --git a/src/api/cocoa/mod.rs b/src/api/cocoa/mod.rs
index d080d06..5cb7edb 100644
--- a/src/api/cocoa/mod.rs
+++ b/src/api/cocoa/mod.rs
@@ -8,6 +8,7 @@ use libc;
use Api;
use BuilderAttribs;
+use ContextError;
use GlContext;
use GlProfile;
use GlRequest;
@@ -781,9 +782,10 @@ impl Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
let _: () = msg_send![*self.context, update];
self.context.makeCurrentContext();
+ Ok(())
}
fn is_current(&self) -> bool {
@@ -810,8 +812,9 @@ impl GlContext for Window {
symbol as *const _
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
unsafe { self.context.flushBuffer(); }
+ Ok(())
}
fn get_api(&self) -> ::Api {
diff --git a/src/api/egl/mod.rs b/src/api/egl/mod.rs
index 3335de0..7b31017 100644
--- a/src/api/egl/mod.rs
+++ b/src/api/egl/mod.rs
@@ -2,6 +2,7 @@
#![allow(unused_variables)]
use BuilderAttribs;
+use ContextError;
use CreationError;
use GlContext;
use GlRequest;
@@ -161,11 +162,18 @@ impl Context {
}
impl GlContext for Context {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
let ret = self.egl.MakeCurrent(self.display, self.surface, self.surface, self.context);
if ret == 0 {
- panic!("eglMakeCurrent failed");
+ if self.egl.GetError() as u32 == ffi::egl::CONTEXT_LOST {
+ return Err(ContextError::ContextLost);
+ } else {
+ panic!("eglMakeCurrent failed");
+ }
+
+ } else {
+ Ok(())
}
}
@@ -181,13 +189,20 @@ impl GlContext for Context {
}
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
let ret = unsafe {
self.egl.SwapBuffers(self.display, self.surface)
};
if ret == 0 {
- panic!("eglSwapBuffers failed");
+ if unsafe { self.egl.GetError() } as u32 == ffi::egl::CONTEXT_LOST {
+ return Err(ContextError::ContextLost);
+ } else {
+ panic!("eglSwapBuffers failed");
+ }
+
+ } else {
+ Ok(())
}
}
diff --git a/src/api/emscripten/mod.rs b/src/api/emscripten/mod.rs
index 48b31a9..04746b1 100644
--- a/src/api/emscripten/mod.rs
+++ b/src/api/emscripten/mod.rs
@@ -5,6 +5,7 @@ use libc;
use {Event, BuilderAttribs, CreationError, MouseCursor};
use Api;
use PixelFormat;
+use ContextError;
use GlContext;
use std::collections::VecDeque;
@@ -191,9 +192,10 @@ impl Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
// TOOD: check if == EMSCRIPTEN_RESULT
ffi::emscripten_webgl_make_context_current(self.context);
+ Ok(())
}
fn is_current(&self) -> bool {
@@ -209,10 +211,9 @@ impl GlContext for Window {
}
}
- fn swap_buffers(&self) {
- unsafe {
- ffi::emscripten_sleep(1); // FIXME:
- }
+ fn swap_buffers(&self) -> Result<(), ContextError> {
+ unsafe { ffi::emscripten_sleep(1); } // FIXME:
+ Ok(())
}
fn get_api(&self) -> Api {
diff --git a/src/api/glx/mod.rs b/src/api/glx/mod.rs
index 885339f..455f6a5 100644
--- a/src/api/glx/mod.rs
+++ b/src/api/glx/mod.rs
@@ -1,6 +1,7 @@
#![cfg(all(target_os = "linux", feature = "window"))]
use BuilderAttribs;
+use ContextError;
use CreationError;
use GlContext;
use GlProfile;
@@ -139,11 +140,13 @@ impl Context {
}
impl GlContext for Context {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
+ // TODO: glutin needs some internal changes for proper error recovery
let res = self.glx.MakeCurrent(self.display as *mut _, self.window, self.context);
if res == 0 {
panic!("glx::MakeCurrent failed");
}
+ Ok(())
}
fn is_current(&self) -> bool {
@@ -158,10 +161,10 @@ impl GlContext for Context {
}
}
- fn swap_buffers(&self) {
- unsafe {
- self.glx.SwapBuffers(self.display as *mut _, self.window)
- }
+ fn swap_buffers(&self) -> Result<(), ContextError> {
+ // TODO: glutin needs some internal changes for proper error recovery
+ unsafe { self.glx.SwapBuffers(self.display as *mut _, self.window); }
+ Ok(())
}
fn get_api(&self) -> ::Api {
diff --git a/src/api/osmesa/mod.rs b/src/api/osmesa/mod.rs
index 26808f7..daaba52 100644
--- a/src/api/osmesa/mod.rs
+++ b/src/api/osmesa/mod.rs
@@ -4,6 +4,7 @@ extern crate osmesa_sys;
use Api;
use BuilderAttribs;
+use ContextError;
use CreationError;
use GlContext;
use PixelFormat;
@@ -67,14 +68,18 @@ impl OsMesaContext {
}
impl GlContext for OsMesaContext {
- unsafe fn make_current(&self) {
- let ret = osmesa_sys::OSMesaMakeCurrent(self.context,
- self.buffer.as_ptr() as *mut libc::c_void,
- 0x1401, self.width as libc::c_int, self.height as libc::c_int);
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
+ let ret = osmesa_sys::OSMesaMakeCurrent(self.context, self.buffer.as_ptr()
+ as *mut libc::c_void, 0x1401, self.width
+ as libc::c_int, self.height as libc::c_int);
+ // an error can only happen in case of invalid parameter, which would indicate a bug
+ // in glutin
if ret == 0 {
- panic!("OSMesaMakeCurrent failed")
+ panic!("OSMesaMakeCurrent failed");
}
+
+ Ok(())
}
fn is_current(&self) -> bool {
@@ -88,7 +93,8 @@ impl GlContext for OsMesaContext {
}
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
+ Ok(())
}
fn get_api(&self) -> Api {
diff --git a/src/api/wayland/mod.rs b/src/api/wayland/mod.rs
index b9bfa18..d711110 100644
--- a/src/api/wayland/mod.rs
+++ b/src/api/wayland/mod.rs
@@ -9,6 +9,7 @@ use api::dlopen;
use api::egl::Context as EglContext;
use BuilderAttribs;
+use ContextError;
use CreationError;
use Event;
use PixelFormat;
@@ -282,8 +283,7 @@ impl Window {
}
impl GlContext for Window {
-
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.context.make_current()
}
@@ -295,7 +295,7 @@ impl GlContext for Window {
self.context.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.context.swap_buffers()
}
diff --git a/src/api/wgl/mod.rs b/src/api/wgl/mod.rs
index d1f42d2..c33054e 100644
--- a/src/api/wgl/mod.rs
+++ b/src/api/wgl/mod.rs
@@ -1,6 +1,7 @@
#![cfg(any(target_os = "windows"))]
use BuilderAttribs;
+use ContextError;
use CreationError;
use GlContext;
use GlRequest;
@@ -156,9 +157,12 @@ impl Context {
}
impl GlContext for Context {
- unsafe fn make_current(&self) {
- // TODO: check return value
- gl::wgl::MakeCurrent(self.hdc as *const _, self.context.0 as *const _);
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
+ if gl::wgl::MakeCurrent(self.hdc as *const _, self.context.0 as *const _) != 0 {
+ Ok(())
+ } else {
+ Err(ContextError::IoError(io::Error::last_os_error()))
+ }
}
fn is_current(&self) -> bool {
@@ -176,9 +180,11 @@ impl GlContext for Context {
}
}
- fn swap_buffers(&self) {
- unsafe {
- gdi32::SwapBuffers(self.hdc);
+ fn swap_buffers(&self) -> Result<(), ContextError> {
+ if unsafe { gdi32::SwapBuffers(self.hdc) } != 0 {
+ Ok(())
+ } else {
+ Err(ContextError::IoError(io::Error::last_os_error()))
}
}
diff --git a/src/api/win32/mod.rs b/src/api/win32/mod.rs
index af339c5..9efdc93 100644
--- a/src/api/win32/mod.rs
+++ b/src/api/win32/mod.rs
@@ -11,6 +11,7 @@ use std::sync::{
};
use std::sync::mpsc::Receiver;
use libc;
+use ContextError;
use {CreationError, Event, MouseCursor};
use CursorState;
use GlContext;
@@ -315,7 +316,7 @@ impl Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
match self.context {
Context::Wgl(ref c) => c.make_current(),
Context::Egl(ref c) => c.make_current(),
@@ -336,7 +337,7 @@ impl GlContext for Window {
}
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
match self.context {
Context::Wgl(ref c) => c.swap_buffers(),
Context::Egl(ref c) => c.swap_buffers(),
diff --git a/src/api/x11/window.rs b/src/api/x11/window.rs
index ba0fe52..c0c5917 100644
--- a/src/api/x11/window.rs
+++ b/src/api/x11/window.rs
@@ -9,6 +9,7 @@ use std::collections::VecDeque;
use std::sync::{Arc, Mutex};
use Api;
+use ContextError;
use CursorState;
use GlContext;
use GlRequest;
@@ -800,11 +801,11 @@ impl Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.make_current(),
Context::Egl(ref ctxt) => ctxt.make_current(),
- Context::None => {}
+ Context::None => Ok(())
}
}
@@ -824,11 +825,11 @@ impl GlContext for Window {
}
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.swap_buffers(),
Context::Egl(ref ctxt) => ctxt.swap_buffers(),
- Context::None => {}
+ Context::None => Ok(())
}
}
diff --git a/src/headless.rs b/src/headless.rs
index 997d87a..8ee81d8 100644
--- a/src/headless.rs
+++ b/src/headless.rs
@@ -1,5 +1,6 @@
use Api;
use BuilderAttribs;
+use ContextError;
use CreationError;
use GlRequest;
use GlContext;
@@ -69,7 +70,7 @@ impl HeadlessContext {
/// Creates a new OpenGL context
/// Sets the context as the current context.
#[inline]
- pub unsafe fn make_current(&self) {
+ pub unsafe fn make_current(&self) -> Result<(), ContextError> {
self.context.make_current()
}
@@ -105,7 +106,7 @@ impl gl_common::GlFunctionsSource for HeadlessContext {
}
impl GlContext for HeadlessContext {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.context.make_current()
}
@@ -117,7 +118,7 @@ impl GlContext for HeadlessContext {
self.context.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.context.swap_buffers()
}
diff --git a/src/lib.rs b/src/lib.rs
index 8171a5c..068b9b8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -65,6 +65,8 @@ pub use window::{AvailableMonitorsIter, MonitorID, get_available_monitors, get_p
#[cfg(feature = "window")]
pub use native_monitor::NativeMonitorId;
+use std::io;
+
mod api;
mod platform;
mod events;
@@ -75,7 +77,7 @@ mod window;
/// Trait that describes objects that have access to an OpenGL context.
pub trait GlContext {
/// Sets the context as the current context.
- unsafe fn make_current(&self);
+ unsafe fn make_current(&self) -> Result<(), ContextError>;
/// Returns true if this context is the current one in this thread.
fn is_current(&self) -> bool;
@@ -86,12 +88,12 @@ pub trait GlContext {
/// Swaps the buffers in case of double or triple buffering.
///
/// You should call this function every time you have finished rendering, or the image
- /// may not be displayed on the screen.
+ /// 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.
- fn swap_buffers(&self);
+ fn swap_buffers(&self) -> Result<(), ContextError>;
/// Returns the OpenGL API being used.
fn get_api(&self) -> Api;
@@ -128,6 +130,13 @@ impl std::error::Error for CreationError {
}
}
+/// Error that can happen when manipulating an OpenGL context.
+#[derive(Debug)]
+pub enum ContextError {
+ IoError(io::Error),
+ ContextLost,
+}
+
/// All APIs related to OpenGL that you can possibly get while using glutin.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Api {
diff --git a/src/platform/android/mod.rs b/src/platform/android/mod.rs
index a1b9416..50f554b 100644
--- a/src/platform/android/mod.rs
+++ b/src/platform/android/mod.rs
@@ -2,6 +2,8 @@
pub use api::android::*;
+use ContextError;
+
pub struct HeadlessContext(i32);
impl HeadlessContext {
@@ -11,7 +13,7 @@ impl HeadlessContext {
}
/// See the docs in the crate root file.
- pub unsafe fn make_current(&self) {
+ pub unsafe fn make_current(&self) -> Result<(), ContextError> {
unimplemented!()
}
diff --git a/src/platform/emscripten/mod.rs b/src/platform/emscripten/mod.rs
index 56a7e9f..d3aa6d6 100644
--- a/src/platform/emscripten/mod.rs
+++ b/src/platform/emscripten/mod.rs
@@ -1,5 +1,6 @@
#![cfg(target_os = "emscripten")]
+use ContextError;
use GlContext;
pub use api::emscripten::{Window, WindowProxy, MonitorID, get_available_monitors};
@@ -15,7 +16,7 @@ impl HeadlessContext {
}
impl GlContext for HeadlessContext {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.0.make_current()
}
@@ -27,7 +28,7 @@ impl GlContext for HeadlessContext {
self.0.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.0.swap_buffers()
}
diff --git a/src/platform/linux/api_dispatch.rs b/src/platform/linux/api_dispatch.rs
index d04a1fb..d21cac3 100644
--- a/src/platform/linux/api_dispatch.rs
+++ b/src/platform/linux/api_dispatch.rs
@@ -7,6 +7,7 @@ use std::collections::VecDeque;
use std::sync::Arc;
use BuilderAttribs;
+use ContextError;
use CreationError;
use CursorState;
use Event;
@@ -289,7 +290,7 @@ impl Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
match self {
&Window::X(ref w) => w.make_current(),
&Window::Wayland(ref w) => w.make_current()
@@ -310,7 +311,7 @@ impl GlContext for Window {
}
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
match self {
&Window::X(ref w) => w.swap_buffers(),
&Window::Wayland(ref w) => w.swap_buffers()
diff --git a/src/platform/linux/mod.rs b/src/platform/linux/mod.rs
index 323a21a..fc42f18 100644
--- a/src/platform/linux/mod.rs
+++ b/src/platform/linux/mod.rs
@@ -2,6 +2,7 @@
use Api;
use BuilderAttribs;
+use ContextError;
use CreationError;
use GlContext;
use PixelFormat;
@@ -37,7 +38,7 @@ impl HeadlessContext {
impl GlContext for HeadlessContext {
#[inline]
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.0.make_current()
}
@@ -52,7 +53,7 @@ impl GlContext for HeadlessContext {
}
#[inline]
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.0.swap_buffers()
}
diff --git a/src/platform/windows/mod.rs b/src/platform/windows/mod.rs
index 260ab94..b33b8ee 100644
--- a/src/platform/windows/mod.rs
+++ b/src/platform/windows/mod.rs
@@ -6,6 +6,7 @@ use libc;
use Api;
use BuilderAttribs;
+use ContextError;
use CreationError;
use PixelFormat;
use GlContext;
@@ -21,7 +22,7 @@ impl HeadlessContext {
}
impl GlContext for HeadlessContext {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.0.make_current()
}
@@ -33,7 +34,7 @@ impl GlContext for HeadlessContext {
self.0.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.0.swap_buffers()
}
diff --git a/src/window.rs b/src/window.rs
index 578c237..9f8ed48 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -3,6 +3,7 @@ use std::default::Default;
use Api;
use BuilderAttribs;
+use ContextError;
use CreationError;
use CursorState;
use Event;
@@ -339,7 +340,7 @@ impl Window {
/// Sets the context as the current context.
#[inline]
- pub unsafe fn make_current(&self) {
+ pub unsafe fn make_current(&self) -> Result<(), ContextError> {
self.window.make_current()
}
@@ -366,7 +367,7 @@ impl Window {
/// 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) {
+ pub fn swap_buffers(&self) -> Result<(), ContextError> {
self.window.swap_buffers()
}
@@ -449,7 +450,7 @@ impl gl_common::GlFunctionsSource for Window {
}
impl GlContext for Window {
- unsafe fn make_current(&self) {
+ unsafe fn make_current(&self) -> Result<(), ContextError> {
self.make_current()
}
@@ -461,7 +462,7 @@ impl GlContext for Window {
self.get_proc_address(addr)
}
- fn swap_buffers(&self) {
+ fn swap_buffers(&self) -> Result<(), ContextError> {
self.swap_buffers()
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 08:06:49 +0000