~vanvugt/mir/confusing-and-misleading

Viewing changes to include/platform/mir/graphics/display.h

Committer: Tarmac
Author(s): Daniel van Vugt
Date: 2016-08-12 22:09:33 UTC
mfrom: (3642.2.2 mention-delay-before-swap)
Revision ID: tarmac-20160812220933-pyaxou8nghwxue9p

Document that NVIDIA (and John Carmack) already standardized what I
termed 'predictive bypass'. Although I failed to discover it before
now.

Approved by mir-ci-bot, Alexandros Frantzis.

files modified:
include/platform/mir/graphics/display.h

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include/platform/mir/graphics/display.h

* scene too early results in up to one whole frame of extra lag if

* rendering is fast or skipped altogether (bypass/overlays). But sampling

* too late and we might miss the deadline. If unsure just return zero.

* This is equivalent to:

* https://www.opengl.org/registry/specs/NV/glx_delay_before_swap.txt

virtual std::chrono::milliseconds recommended_sleep() const = 0;

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