Contact
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Ian Elliott ianelliottus
Other Extension Metadata
- Last Modified Date
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2017-02-14
- IP Status
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No known IP claims.
- Contributors
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Ian Elliott, Google
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Jesse Hall, Google
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Description
This device extension allows an application that uses the
VK_KHR_swapchain extension to obtain information about the
presentation engine’s display, to obtain timing information about each
present, and to schedule a present to happen no earlier than a desired time.
An application can use this to minimize various visual anomalies (e.g.
stuttering).
Traditional game and real-time animation applications need to correctly position their geometry for when the presentable image will be presented to the user. To accomplish this, applications need various timing information about the presentation engine’s display. They need to know when presentable images were actually presented, and when they could have been presented. Applications also need to tell the presentation engine to display an image no sooner than a given time. This allows the application to avoid stuttering, so the animation looks smooth to the user.
This extension treats variable-refresh-rate (VRR) displays as if they are fixed-refresh-rate (FRR) displays.
New Enum Constants
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VK_GOOGLE_DISPLAY_TIMING_EXTENSION_NAME -
VK_GOOGLE_DISPLAY_TIMING_SPEC_VERSION -
Extending VkStructureType:
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VK_STRUCTURE_TYPE_PRESENT_TIMES_INFO_GOOGLE
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Examples
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Note
The example code for the this extension (like the |
Document Notes
For more information, see the Vulkan Specification
This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.