mirror of
https://github.com/bryanthaboi/gen1recomp
synced 2026-10-09 18:07:27 -04:00
1jamie
2f6c5527f6
- Introduced PresentSync module to manage display synchronization. - Updated love.run() to handle display changes and resizing events with PresentSync. - Enhanced FrameCap logic to accommodate PresentSync requirements. - Modified VSync to report effective states and handle driver quirks. - Updated options menus to reflect PresentSync availability and restrictions. - Added tests to validate PresentSync functionality and its interaction with VSync settings. should address issue #1910 and issue #1958
90 lines
2.6 KiB
Lua
90 lines
2.6 KiB
Lua
-- Cross-platform present sync: probe whether vsync actually gates presents,
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-- delegate Linux-specific GLX waits to PresentProbe, and decide when FixedStep
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-- may snap dt to the panel refresh (DISPLAY + working sync only).
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local PresentSync = {}
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local function probe()
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return require("src.core.PresentProbe")
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end
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function PresentSync.waitBeforePresent()
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probe().waitBeforePresent()
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end
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function PresentSync.notePresent()
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probe().notePresent()
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end
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-- True while the probe still has no gated/ungated verdict for DISPLAY+vsync.
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function PresentSync.probingDisplaySync()
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local status = probe().status()
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if status.gated ~= nil then return false end
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local FrameCap = require("src.core.FrameCap")
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local VSync = require("src.core.VSync")
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return FrameCap.current == FrameCap.DISPLAY and VSync.isOn()
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end
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function PresentSync.needsSoftwareCap()
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if probe().needsSoftwareCap() then return true end
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return PresentSync.probingDisplaySync()
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end
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-- Vsync cannot be turned on usefully once the probe has failed; the row still
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-- allows stepping to OFF. Warmup (probingDisplaySync) does not block the row.
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function PresentSync.vsyncEnableBlocked()
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local VSync = require("src.core.VSync")
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if not VSync.isOn() then return false end
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return probe().needsSoftwareCap()
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end
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function PresentSync.vsyncStepAllowed(mode, dir)
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if not PresentSync.vsyncEnableBlocked() then return true end
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local VSync = require("src.core.VSync")
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return VSync.cycle(mode, dir) == "off"
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end
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function PresentSync.onDisplayChange()
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probe().onDisplayChange()
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end
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function PresentSync.reprobe()
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probe().reprobe()
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end
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function PresentSync.reset()
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probe().reset()
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end
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function PresentSync.status()
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return probe().status()
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end
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-- FixedStep.refreshPeriod is only set when logic cadence should track the
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-- display. Snapping dt to 144Hz while software-pacing at 60 (#1958) or
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-- with vsync off is what caused the irregular frame pacing regression.
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function PresentSync.logicRefreshPeriod()
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local FrameCap = require("src.core.FrameCap")
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local VSync = require("src.core.VSync")
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local RefreshRate = require("src.core.RefreshRate")
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local cap = FrameCap.current
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if cap == FrameCap.DISPLAY then
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if not VSync.isOn() then return nil end
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if PresentSync.needsSoftwareCap() then return nil end
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return RefreshRate.period()
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end
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if not cap or cap <= 0 then return nil end
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local hz = RefreshRate.hz()
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if hz and cap == hz then return 1 / hz end
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return nil
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end
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function PresentSync.applyFixedStepPeriod()
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require("src.core.FixedStep").refreshPeriod = PresentSync.logicRefreshPeriod()
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end
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return PresentSync
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