gamescope/src/vblankmanager.hpp

// Try to figure out when vblank is and notify steamcompmgr to render some time before it

int vblank_init( void );

void vblank_mark_possible_vblank( uint64_t nanos );

extern std::atomic<uint64_t> g_uVblankDrawTimeNS;

const unsigned int g_uDefaultVBlankRedZone = 1'650'000;
const unsigned int g_uDefaultMinVBlankTime = 350'000; // min vblank time for fps limiter to care about
const unsigned int g_uDefaultVBlankRateOfDecayPercentage = 980;

extern uint64_t g_uVblankDrawBufferRedZoneNS;
extern uint64_t g_uVBlankRateOfDecayPercentage;

extern std::atomic<bool> g_bCurrentlyCompositing;
vblankmanager: initial system to let steamcompmgr know when to repaint For now just mark one repaint per refresh interval without any particular alignment, as that can be hard to get in nested. We'll use the display timing extensions for that later. We'll have it align properly in embedded mode soon. 2020-01-26 22:59:51 +00:00			`// Try to figure out when vblank is and notify steamcompmgr to render some time before it`

Stop using X11 events for vblankmanager Instead, use a pipe. Check if the pipe is readable in the steamcompmgr event loop. This avoids a roundtrip through the X11 server. Closes: https://github.com/Plagman/gamescope/issues/201 2021-06-09 16:42:38 +00:00			`int vblank_init( void );`
vblankmanager: initial system to let steamcompmgr know when to repaint For now just mark one repaint per refresh interval without any particular alignment, as that can be hard to get in nested. We'll use the display timing extensions for that later. We'll have it align properly in embedded mode soon. 2020-01-26 22:59:51 +00:00
drm: Use vblank time from page flip handler 2022-01-25 14:35:55 +00:00			`void vblank_mark_possible_vblank( uint64_t nanos );`
vblankmanager: Estimate draw buffer time based on max rolling average draw time Handles spikes much better and allows us to have a lower buffer when not needed. 2022-01-25 13:04:32 +00:00
			`extern std::atomic<uint64_t> g_uVblankDrawTimeNS;`
steamcompmgr: Add tuneables for vblank red zone + decay rate 2022-01-28 23:44:21 +00:00
vblankmanager: Tune vblank redzone values Couldn't do the other thing, causes some wackiness when compositing. 2022-02-14 13:39:51 +00:00			`const unsigned int g_uDefaultVBlankRedZone = 1'650'000;`
			`const unsigned int g_uDefaultMinVBlankTime = 350'000; // min vblank time for fps limiter to care about`
vblankmanager: Tune FPS limiter and dynamic vblank heuristics 2022-02-11 05:28:03 +00:00			`const unsigned int g_uDefaultVBlankRateOfDecayPercentage = 980;`
steamcompmgr: Add tuneables for vblank red zone + decay rate 2022-01-28 23:44:21 +00:00
			`extern uint64_t g_uVblankDrawBufferRedZoneNS;`
			`extern uint64_t g_uVBlankRateOfDecayPercentage;`
vblankmanager: Push back drawtime if we are compositing Avoids getting into a feedback loop with clocks when we need to composite. Fixes stutter when using FSR on Steam Deck. 2022-08-16 23:13:56 +00:00
			`extern std::atomic<bool> g_bCurrentlyCompositing;`