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Handle errors from MakeCurrent and SwapBuffers

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This commit is contained in:
Pierre Krieger 2015-06-16 10:15:31 +02:00
parent e48c853b9c
commit f6c26ec593
20 changed files with 123 additions and 62 deletions
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15
src/lib.rs
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@ -63,6 +63,8 @@ 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;
@ -73,7 +75,7 @@ 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;
@ -84,12 +86,12 @@ 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;
@ -126,6 +128,13 @@ 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 {