diff options
| -rw-r--r-- | video/out/d3d11/context.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/video/out/d3d11/context.c b/video/out/d3d11/context.c index 881962f3be..b77e328b70 100644 --- a/video/out/d3d11/context.c +++ b/video/out/d3d11/context.c @@ -258,6 +258,15 @@ static void d3d11_get_vsync(struct ra_swapchain *sw, struct vo_vsync_info *info) if (p->opts->sync_interval != 1) return; + // They're also only valid for flip model swapchains + DXGI_SWAP_CHAIN_DESC desc; + hr = IDXGISwapChain_GetDesc(p->swapchain, &desc); + if (FAILED(hr) || (desc.SwapEffect != DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL && + desc.SwapEffect != DXGI_SWAP_EFFECT_FLIP_DISCARD)) + { + return; + } + // GetLastPresentCount returns a sequential ID for the frame submitted by // the last call to IDXGISwapChain::Present() UINT submit_count; @@ -308,10 +317,9 @@ static void d3d11_get_vsync(struct ra_swapchain *sw, struct vo_vsync_info *info) stats.PresentRefreshCount && stats.SyncRefreshCount && stats.SyncQPCTime.QuadPart) { - // PresentRefreshCount and SyncRefreshCount might refer to different - // frames (this can definitely occur in bitblt-mode.) Assuming mpv - // presents on every frame, guess the present count that relates to - // SyncRefreshCount. + // It's not clear if PresentRefreshCount and SyncRefreshCount can refer + // to different frames, but in case they can, assuming mpv presents on + // every frame, guess the present count that relates to SyncRefreshCount. unsigned expected_sync_pc = stats.PresentCount + (stats.SyncRefreshCount - stats.PresentRefreshCount); |