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Only pace presentation if display sync is enabled

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This commit is contained in:
Cameron Gutman 2024-02-25 18:45:41 -06:00
parent 76d0eb6b63
commit 654e386263
1 changed files with 19 additions and 15 deletions
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4
app/streaming/video/ffmpeg-renderers/vt_metal.mm
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@ -199,6 +199,7 @@ public:
return;
}
if (m_MetalLayer.displaySyncEnabled) {
// Pace ourselves by waiting if too many frames are pending presentation
SDL_LockMutex(m_PresentationMutex);
if (m_PendingPresentationCount > 2) {
@ -209,6 +210,7 @@ public:
}
SDL_UnlockMutex(m_PresentationMutex);
}
}
}}
virtual void cleanupRenderContext() override
@ -492,6 +494,7 @@ public:
[renderEncoder endEncoding];
if (m_MetalLayer.displaySyncEnabled) {
// Queue a completion callback on the drawable to pace our rendering
SDL_LockMutex(m_PresentationMutex);
m_PendingPresentationCount++;
@ -502,6 +505,7 @@ public:
SDL_CondSignal(m_PresentationCond);
SDL_UnlockMutex(m_PresentationMutex);
}];
}
// Flip to the newly rendered buffer
[commandBuffer presentDrawable:m_NextDrawable];