Struct glium_graphics::GliumWindow

pub struct GliumWindow<W = GlutinWindow> {
    pub window: Rc<RefCell<W>>,
    pub context: Rc<Context>,
    pub events: Events,
}

A window struct for glium.

Fields

window: Rc<RefCell<W>>

Window.

context: Rc<Context>

Glium context.

events: Events

Event loop state.

Methods

impl<W> GliumWindow<W> where     W: OpenGLWindow + 'static,

pub fn new(window: &Rc<RefCell<W>>) -> Result<Self, IncompatibleOpenGl>

Creates new GliumWindow.

pub fn draw(&self) -> Frame

Returns new frame.

pub fn next(&mut self) -> Option<Event>

Returns next event.

Methods from Deref<Target = Context>

pub fn get_framebuffer_dimensions(&self) -> (u32, u32)

Calls get_framebuffer_dimensions on the backend object stored by this context.

pub unsafe fn rebuild<B>(     &self,     new_backend: B ) -> Result<(), IncompatibleOpenGl> where     B: Backend + 'static,

Changes the OpenGL context associated with this context.

The new context must have lists shared with the old one.

pub fn swap_buffers(&self) -> Result<(), SwapBuffersError>

Swaps the buffers in the backend.

pub fn get_version(&self) -> &Version

DEPRECATED. Use get_opengl_version instead.

pub fn get_opengl_version(&self) -> &Version

Returns the OpenGL version detected by this context.

pub fn get_supported_glsl_version(&self) -> Version

Returns the GLSL version guaranteed to be supported.

pub fn is_glsl_version_supported(&self, version: &Version) -> bool

Returns true if the given GLSL version is supported.

pub fn get_opengl_version_string(&self) -> &str

Returns a string containing this GL version or release number used by this context.

Vendor-specific information may follow the version number.

pub fn get_opengl_vendor_string(&self) -> &str

Returns a string containing the company responsible for this GL implementation.

pub fn get_opengl_renderer_string(&self) -> &str

Returns a string containing the name of the GL renderer used by this context.

This name is typically specific to a particular configuration of a hardware platform.

pub fn is_debug(&self) -> bool

Returns true if the context is in debug mode.

Debug mode may provide additional error and performance issue reporting functionality.

pub fn is_forward_compatible(&self) -> bool

Returns true if the context is in "forward-compatible" mode.

Forward-compatible mode means that no deprecated functionality will be supported.

pub fn get_opengl_profile(&self) -> Option<Profile>

Returns this context's OpenGL profile if available.

The context profile is available from OpenGL 3.2 onwards. Returns None if not supported.

pub fn is_robust(&self) -> bool

Returns true if out-of-bound buffer access from the GPU side (inside a program) cannot result in a crash.

You should take extra care if is_robust returns false.

pub fn is_context_loss_possible(&self) -> bool

Returns true if a context loss is possible.

pub fn is_context_lost(&self) -> bool

Returns true if the context has been lost and needs to be recreated.

Implementation

If it has been determined that the context has been lost before, then the function immediately returns true. Otherwise, calls glGetGraphicsResetStatus. If this function is not available, returns false.

pub fn get_release_behavior(&self) -> ReleaseBehavior

Returns the behavior when the current OpenGL context is changed.

The most common value is Flush. In order to get None you must explicitly request it during creation.

pub fn get_max_anisotropy_support(&self) -> Option<u16>

Returns the maximum value that can be used for anisotropic filtering, or None if the hardware doesn't support it.

pub fn get_max_viewport_dimensions(&self) -> (u32, u32)

Returns the maximum dimensions of the viewport.

Glium will panic if you request a larger viewport than this when drawing.

pub fn release_shader_compiler(&self)

Releases the shader compiler, indicating that no new programs will be created for a while.

This method is a no-op if it's not available in the implementation.

pub fn get_free_video_memory(&self) -> Option<usize>

Returns an estimate of the amount of video memory available in bytes.

Returns None if no estimate is available.

pub fn read_front_buffer<T>(&self) -> T where     T: Texture2dDataSink<(u8, u8, u8, u8)>,

Reads the content of the front buffer.

You will only see the data that has finished being drawn.

This function can return any type that implements Texture2dDataSink<(u8, u8, u8, u8)>.

Example

let pixels: Vec<Vec<(u8, u8, u8, u8)>> = display.read_front_buffer();

pub unsafe fn exec_in_context<'a, T, F>(&self, action: F) -> T where     F: FnOnce() -> T + 'a,     T: Send + 'static,

Execute an arbitrary closure with the OpenGL context active. Useful if another component needs to directly manipulate OpenGL state.

If action manipulates any OpenGL state, it must be restored before action completes.

pub fn assert_no_error(&self, user_msg: Option<&str>)

Asserts that there are no OpenGL errors pending.

This function should be used in tests.

pub fn synchronize(&self)

DEPRECATED. Renamed finish.

pub fn finish(&self)

Calls glFinish(). This waits until all the previously issued commands have finished being executed.

When you execute OpenGL functions, they are not executed immediately. Instead they are put in a queue. This function flushes this queue, then waits until all commands have finished being executed.

You normally don't need to call this function manually, except for debugging purposes.

pub fn flush(&self)

Calls glFlush(). This starts executing the commands that you have issued if it is not yet the case.

When you execute OpenGL functions, they are not executed immediately. Instead they are put in a queue. This function flushes this queue so that commands start being executed.

You normally don't need to call this function manually. Swapping buffers automatically flushes the queue. This function can be useful if you want to benchmark the time it takes from your OpenGL driver to process commands.

pub fn insert_debug_marker(&self, marker: &str) -> Result<(), ()>

Inserts a debugging string in the commands queue. If you use an OpenGL debugger, you will be able to see that string.

This is helpful to understand where you are when you have big applications.

Returns Err if the backend doesn't support this functionality. You can choose whether to call .unwrap() if you want to make sure that it works, or .ok() if you don't care.

pub fn debug_insert_debug_marker(&self, marker: &str) -> Result<(), ()>

Same as insert_debug_marker, except that if you don't compile with debug_assertions it is a no-op and returns Ok.

Trait Implementations

impl<W> Clone for GliumWindow<W>

fn clone(&self) -> GliumWindow<W>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<W> Deref for GliumWindow<W>

type Target = Context

The resulting type after dereferencing.

fn deref(&self) -> &Context

Dereferences the value.

impl<W> Facade for GliumWindow<W>

fn get_context(&self) -> &Rc<Context>

Returns an opaque type that contains the OpenGL state, extensions, version, etc.

impl<W> EventLoop for GliumWindow<W>

fn get_event_settings(&self) -> EventSettings

Returns event loop settings.

fn set_event_settings(&mut self, settings: EventSettings)

Sets event loop settings.

fn set_ups(&mut self, frames: u64)

The number of updates per second

fn ups(self, frames: u64) -> Self

The number of updates per second

fn set_ups_reset(&mut self, frames: u64)

The number of delayed updates before skipping them to catch up. When set to 0, it will always try to catch up.

fn ups_reset(self, frames: u64) -> Self

The number of delayed updates before skipping them to catch up. When set to 0, it will always try to catch up.

fn set_max_fps(&mut self, frames: u64)

The maximum number of frames per second

fn max_fps(self, frames: u64) -> Self

The maximum number of frames per second

fn set_swap_buffers(&mut self, enable: bool)

Enable or disable automatic swapping of buffers.

fn swap_buffers(self, enable: bool) -> Self

Enable or disable automatic swapping of buffers.

fn set_bench_mode(&mut self, enable: bool)

Enable or disable benchmark mode. When enabled, it will render and update without sleep and ignore input. Used to test performance by playing through as fast as possible. Requires lazy to be set to false.

fn bench_mode(self, enable: bool) -> Self

Enable or disable benchmark mode. When enabled, it will render and update without sleep and ignore input. Used to test performance by playing through as fast as possible. Requires lazy to be set to false.

fn set_lazy(&mut self, enable: bool)

Enable or disable rendering only when receiving input. When enabled, update events are disabled. Idle events are emitted while receiving input.

fn lazy(self, enable: bool) -> Self

Enable or disable rendering only when receiving input. When enabled, update events are disabled. Idle events are emitted while receiving input.

impl<W> Window for GliumWindow<W> where     W: Window,

fn should_close(&self) -> bool

Returns true if the window should close.

fn set_should_close(&mut self, value: bool)

Tells the window to close or stay open.

fn size(&self) -> Size

Gets the size of the window.

fn draw_size(&self) -> Size

Gets the draw size of the window.

fn swap_buffers(&mut self)

Swaps render buffers.

fn poll_event(&mut self) -> Option<Input>

Polls an input event from the window.

fn wait_event(&mut self) -> Input

Wait indefinitely for an input event to be available from the window.

fn wait_event_timeout(&mut self, duration: Duration) -> Option<Input>

Wait for an input event to be available from the window or for the specified timeout to be reached.

impl<W> BuildFromWindowSettings for GliumWindow<W> where     W: 'static + Window + OpenGLWindow + BuildFromWindowSettings,

fn build_from_window_settings(     settings: &WindowSettings ) -> Result<GliumWindow<W>, Box<dyn Error>>

Builds the window from a WindowSettings object.

impl<W> AdvancedWindow for GliumWindow<W> where     W: AdvancedWindow,

fn get_title(&self) -> String

Gets a copy of the title of the window.

fn set_title(&mut self, title: String)

Sets the title of the window.

fn get_exit_on_esc(&self) -> bool

Gets whether to exit when pressing esc.

fn set_exit_on_esc(&mut self, value: bool)

Sets whether to exit when pressing esc.

fn set_capture_cursor(&mut self, value: bool)

Sets whether to capture/grab the cursor.

fn show(&mut self)

Shows the window.

fn hide(&mut self)

Hides the window.

fn get_position(&self) -> Option<Position>

Gets the position of window.

fn set_position<P: Into<Position>>(&mut self, pos: P)

Sets the position of window.

fn set_size<S: Into<Size>>(&mut self, size: S)

Sets the window size.

fn title(self, value: String) -> Self

Sets title on window.

fn exit_on_esc(self, value: bool) -> Self

Sets whether to exit when pressing the Esc button.

fn capture_cursor(self, value: bool) -> Self

Sets whether to capture/grab the cursor.

fn position<P>(self, val: P) -> Self where     P: Into<Position>,

Sets the position of window.