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authorVito Caputo <vcaputo@pengaru.com>2023-08-29 11:47:45 -0700
committerVito Caputo <vcaputo@pengaru.com>2023-08-29 11:47:45 -0700
commit5ba2147e2db913fa0ba79daf49d58d2f4d35a9a7 (patch)
tree1b6f5c60fb2b0e095e66093c6a0c526f82227b71 /src/modules
parenteba46d3c401a57c7ca2f95baa0312bfb09543ed0 (diff)
til_fb: return queue delay from til_fb_page_get()
til_fb is triple buffered, but when rendering lags behind the queue is empty making present-to-delay intervals smaller than when rendering is keeping up and the queue is kept full. This returns the duration of the returned pages last submit-to-present delay, effectively measuring how long a page can expect to wait to be flipped to/presented currently. A subsequent commit will apply this delay value to the ticks supplied to rendering.
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