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[client] render: bound software surface update backlog

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This commit is contained in:
Geoffrey McRae
2026-08-12 04:13:00 +10:00
parent f68bf8f0d5
commit 9c0caca3fa
4 changed files with 638 additions and 98 deletions
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47
client/src/main.c
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@@ -1732,6 +1732,27 @@ static void videoSourceClearCursor(LG_VideoSource source)
renderQueue_sourceClearCursor(renderQueueSource(source));
}
static void videoSourceReject(void * opaque, RenderQueueSource queueSource,
uint64_t serial)
{
(void)opaque;
LG_VideoSource source = LG_VIDEO_SOURCE_NONE;
if (queueSource == RENDER_QUEUE_SOURCE_PRIMARY)
source = LG_VIDEO_SOURCE_PRIMARY;
else if (queueSource == RENDER_QUEUE_SOURCE_FALLBACK)
source = LG_VIDEO_SOURCE_FALLBACK;
if (source == LG_VIDEO_SOURCE_NONE)
return;
struct VideoSourceState * state = &g_state.videoSource[source];
if (atomic_compare_exchange_strong_explicit(&state->transitionSerial,
&serial, 0, memory_order_acq_rel, memory_order_relaxed))
atomic_store_explicit(
&state->transitionPending, false, memory_order_release);
}
static bool videoSourcePrepare(void * opaque, RenderQueueSource queueSource,
uint64_t generation, uint64_t serial)
{
@@ -1799,10 +1820,7 @@ static bool videoSourcePrepare(void * opaque, RenderQueueSource queueSource,
return true;
reject:
if (atomic_compare_exchange_strong_explicit(&state->transitionSerial,
&serial, 0, memory_order_acq_rel, memory_order_relaxed))
atomic_store_explicit(
&state->transitionPending, false, memory_order_release);
videoSourceReject(opaque, queueSource, serial);
return false;
}
@@ -1892,6 +1910,7 @@ static void swSurfaceConfigure(LG_VideoSource source,
unsigned int width, unsigned int height)
{
struct VideoSourceState * state = &g_state.videoSource[source];
uint64_t generation;
LG_LOCK(g_state.videoSourceLock);
if (!swSurfaceEventAdmitted(source))
{
@@ -1900,10 +1919,25 @@ static void swSurfaceConfigure(LG_VideoSource source,
}
videoSourceBeginLocked(source);
generation = atomic_load_explicit(
&state->generation, memory_order_acquire);
atomic_store_explicit(&state->width, width, memory_order_relaxed);
atomic_store_explicit(&state->height, height, memory_order_relaxed);
atomic_store_explicit(&state->rotate, LG_ROTATE_0, memory_order_release);
state->configurePending = true;
LG_UNLOCK(g_state.videoSourceLock);
if (!renderQueue_sourceSwSurfaceConfigure(renderQueueSource(source),
generation, width, height))
return;
LG_LOCK(g_state.videoSourceLock);
if (atomic_load_explicit(
&state->generation, memory_order_acquire) != generation)
{
LG_UNLOCK(g_state.videoSourceLock);
return;
}
atomic_store_explicit(&state->ready, true, memory_order_release);
LG_UNLOCK(g_state.videoSourceLock);
@@ -3002,7 +3036,8 @@ static int lg_run(void)
LG_LOCK_INIT(g_state.videoSourceLock);
LG_LOCK_INIT(g_state.videoSplashLock);
renderQueue_init();
renderQueue_setSourceFns(videoSourcePrepare, videoSourceApplied, NULL);
renderQueue_setSourceFns(
videoSourcePrepare, videoSourceReject, videoSourceApplied, NULL);
atomic_store_explicit(&g_state.videoSourceRequested,
LG_VIDEO_SOURCE_PRIMARY, memory_order_relaxed);
atomic_store_explicit(&g_state.videoSourceApplied,
@@ -3552,7 +3587,7 @@ static void lg_shutdown(void)
g_state.overlays = NULL;
}
renderQueue_setSourceFns(NULL, NULL, NULL);
renderQueue_setSourceFns(NULL, NULL, NULL, NULL);
renderQueue_free();
LG_LOCK_FREE(g_state.videoSourceLock);
LG_LOCK_FREE(g_state.videoSplashLock);