Merge pull request #8508 from yuzu-emu/mc-speed-limit

hle: service: nvflinger: Factor speed limit into frame time calculation.

1 files changed, 15 insertions, 3 deletions

diff --git a/src/core/hle/service/nvflinger/nvflinger.cpp b/src/core/hle/service/nvflinger/nvflinger.cpp
index 5f69c8c2c..5574269eb 100644
--- a/src/core/hle/service/nvflinger/nvflinger.cpp
+++ b/src/core/hle/service/nvflinger/nvflinger.cpp
@@ -287,9 +287,21 @@ s64 NVFlinger::GetNextTicks() const {
     static constexpr s64 max_hertz = 120LL;
 
     const auto& settings = Settings::values;
-    const bool unlocked_fps = settings.disable_fps_limit.GetValue();
-    const s64 fps_cap = unlocked_fps ? static_cast<s64>(settings.fps_cap.GetValue()) : 1;
-    return (1000000000 * (1LL << swap_interval)) / (max_hertz * fps_cap);
+    auto speed_scale = 1.f;
+    if (settings.use_multi_core.GetValue()) {
+        if (settings.use_speed_limit.GetValue()) {
+            // Scales the speed based on speed_limit setting on MC. SC is handled by
+            // SpeedLimiter::DoSpeedLimiting.
+            speed_scale = 100.f / settings.speed_limit.GetValue();
+        } else {
+            // Run at unlocked framerate.
+            speed_scale = 0.01f;
+        }
+    }
+
+    const auto next_ticks = ((1000000000 * (1LL << swap_interval)) / max_hertz);
+
+    return static_cast<s64>(speed_scale * static_cast<float>(next_ticks));
 }
 
 } // namespace Service::NVFlinger