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HeadlessExperimentalBeginFrameAsync Method

Version 85.3.121
Sends a BeginFrame to the target and returns when the frame was completed. Optionally captures a screenshot from the resulting frame. Requires that the target was created with enabled BeginFrameControl. Designed for use with --run-all-compositor-stages-before-draw, see also https://goo.gl/3zHXhB for more background.

Namespace:  CefSharp.DevTools.HeadlessExperimental
Assembly:  CefSharp (in CefSharp.dll) Version: 85.3.121.0 (85.3.121.0)
Syntax
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public Task<BeginFrameResponse> BeginFrameAsync(
	Nullable<long> frameTimeTicks = null,
	Nullable<long> interval = null,
	Nullable<bool> noDisplayUpdates = null,
	ScreenshotParams screenshot = null
)

Parameters

frameTimeTicks (Optional)
Type: SystemNullableInt64
Timestamp of this BeginFrame in Renderer TimeTicks (milliseconds of uptime). If not set,the current time will be used.
interval (Optional)
Type: SystemNullableInt64
The interval between BeginFrames that is reported to the compositor, in milliseconds.Defaults to a 60 frames/second interval, i.e. about 16.666 milliseconds.
noDisplayUpdates (Optional)
Type: SystemNullableBoolean
Whether updates should not be committed and drawn onto the display. False by default. Iftrue, only side effects of the BeginFrame will be run, such as layout and animations, butany visual updates may not be visible on the display or in screenshots.
screenshot (Optional)
Type: CefSharp.DevTools.HeadlessExperimentalScreenshotParams
If set, a screenshot of the frame will be captured and returned in the response. Otherwise,no screenshot will be captured. Note that capturing a screenshot can fail, for example,during renderer initialization. In such a case, no screenshot data will be returned.

Return Value

Type: TaskBeginFrameResponse
returns System.Threading.Tasks.Task<BeginFrameResponse>
See Also