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steamcompmgr: Add basic infra for fifo relaxed

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This commit is contained in:
Joshua Ashton 2022-09-07 10:46:51 +00:00
parent 440d0f1b53
commit f0f19b3499
1 changed files with 18 additions and 8 deletions
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26
src/steamcompmgr.cpp
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@ -209,7 +209,7 @@ struct commit_t
#define MWM_TEAROFF_WINDOW 1
bool g_bAsyncFlipsEnabled = false;
int g_nAsyncFlipsEnabled = 0;
struct motif_hints_t
{
@ -4192,7 +4192,7 @@ handle_property_notify(xwayland_ctx_t *ctx, XPropertyEvent *ev)
}
if ( ev->atom == ctx->atoms.gamescopeAllowTearing )
{
g_bAsyncFlipsEnabled = !!get_prop( ctx, ctx->root, ctx->atoms.gamescopeAllowTearing, 0 );
g_nAsyncFlipsEnabled = get_prop( ctx, ctx->root, ctx->atoms.gamescopeAllowTearing, 0 );
}
if (ev->atom == ctx->atoms.wineHwndStyle)
{
@ -5439,17 +5439,21 @@ steamcompmgr_main(int argc, char **argv)
if (focusDirty)
determine_and_apply_focus();
static int nMissedOverlayPaints = 0;
const bool bAllowRelaxedVsync = g_nAsyncFlipsEnabled >= 2;
static int nIgnoredOverlayRepaints = 0;
static int nBasePlaneMissedVBlankCount = 0;
const bool bSteamOverlayOpen = global_focus.overlayWindow && global_focus.overlayWindow->opacity;
const bool bSurfaceWantsAsync = g_HeldCommits[HELD_COMMIT_BASE] && g_HeldCommits[HELD_COMMIT_BASE]->async;
// If we are running behind, allow tearing.
const bool bSurfaceWantsAsync = (g_HeldCommits[HELD_COMMIT_BASE] && g_HeldCommits[HELD_COMMIT_BASE]->async) || (nBasePlaneMissedVBlankCount && bAllowRelaxedVsync);
const bool bForceSyncFlip = g_bTakeScreenshot || is_fading_out();
// If we are compositing, always force sync flips because we currently wait
// for composition to finish before submitting.
// If we want to do async + composite, we should set up syncfile stuff and have DRM wait on it.
const bool bNeedsSyncFlip = bForceSyncFlip || g_bCurrentlyCompositing || nMissedOverlayPaints;
const bool bDoAsyncFlip = g_bAsyncFlipsEnabled && g_bSupportsAsyncFlips && bSurfaceWantsAsync && !bSteamOverlayOpen && !bNeedsSyncFlip;
const bool bNeedsSyncFlip = bForceSyncFlip || g_bCurrentlyCompositing || nIgnoredOverlayRepaints;
const bool bDoAsyncFlip = (g_nAsyncFlipsEnabled >= 1) && g_bSupportsAsyncFlips && bSurfaceWantsAsync && !bSteamOverlayOpen && !bNeedsSyncFlip;
bool bShouldPaint = false;
if ( bDoAsyncFlip )
@ -5463,16 +5467,22 @@ steamcompmgr_main(int argc, char **argv)
}
if ( !bShouldPaint && hasRepaintNonBasePlane && vblank )
nMissedOverlayPaints++;
nIgnoredOverlayRepaints++;
if ( !hasRepaint && vblank )
nBasePlaneMissedVBlankCount++;
if ( bShouldPaint )
{
paint_all( !vblank );
// Consumed the need to repaint here
if (hasRepaint)
nBasePlaneMissedVBlankCount = 0;
hasRepaint = false;
hasRepaintNonBasePlane = false;
nMissedOverlayPaints = 0;
nIgnoredOverlayRepaints = 0;
// If we're in the middle of a fade, pump an event into the loop to
// make sure we keep pushing frames even if the app isn't updating.