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hardware_composer: implement speed limit extensions

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This commit is contained in:
Liam
2024-01-23 10:19:55 -05:00
parent a595e9e8a7
commit 2c421a7046
5 changed files with 50 additions and 22 deletions
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12
src/core/hle/service/nvnflinger/nvnflinger.cpp
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@@ -291,7 +291,8 @@ void Nvnflinger::Compose() {
auto nvdisp = nvdrv->GetDevice<Nvidia::Devices::nvdisp_disp0>(disp_fd);
ASSERT(nvdisp);
swap_interval = display.GetComposer().ComposeLocked(display, *nvdisp, swap_interval);
swap_interval = display.GetComposer().ComposeLocked(&compose_speed_scale, display, *nvdisp,
swap_interval);
}
}
@@ -308,15 +309,16 @@ s64 Nvnflinger::GetNextTicks() const {
speed_scale = 0.01f;
}
}
// Adjust by speed limit determined during composition.
speed_scale /= compose_speed_scale;
if (system.GetNVDECActive() && settings.use_video_framerate.GetValue()) {
// Run at intended presentation rate during video playback.
speed_scale = 1.f;
}
// As an extension, treat nonpositive swap interval as framerate multiplier.
const f32 effective_fps = swap_interval <= 0 ? 120.f * static_cast<f32>(1 - swap_interval)
: 60.f / static_cast<f32>(swap_interval);
const f32 effective_fps = 60.f / static_cast<f32>(swap_interval);
return static_cast<s64>(speed_scale * (1000000000.f / effective_fps));
}