VkPresentTimingInfoFlagBitsEXT

Bits which can be set in VkPresentTimingInfoEXT::flags, specifying options for how to interpret timing information:

typedef enum VkPresentTimingInfoFlagBitsEXT {
    VK_PRESENT_TIMING_INFO_PRESENT_AT_RELATIVE_TIME_BIT_EXT = 0x00000001,
    VK_PRESENT_TIMING_INFO_PRESENT_AT_NEAREST_REFRESH_CYCLE_BIT_EXT = 0x00000002,
} VkPresentTimingInfoFlagBitsEXT;

pub struct PresentTimingInfoFlagBitsEXT(u32);
impl PresentTimingInfoFlagBitsEXT {
    pub const PRESENT_AT_RELATIVE_TIME: Self = 0x00000001;
    pub const PRESENT_AT_NEAREST_REFRESH_CYCLE: Self = 0x00000002;
}

• VK_PRESENT_TIMING_INFO_PRESENT_AT_RELATIVE_TIME_BIT_EXT specifies that VkPresentTimingInfoEXT::targetTime is to be interpreted as a relative time from the previous presentation’s VK_PRESENT_STAGE_IMAGE_FIRST_PIXEL_VISIBLE_BIT_EXT stage. If the swapchain has never been used to present an image, the provided targetTime is ignored.
• VK_PRESENT_TIMING_INFO_PRESENT_AT_NEAREST_REFRESH_CYCLE_BIT_EXT specifies that the application would prefer the image to be presented earlier than the time specified in VkPresentTimingInfoEXT::targetTime if that time falls within the first half of a refresh cycle. In that case, the presentation engine may choose to display the image at the start of that refresh cycle.