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GPUDevice: Use separate variables for last/next present time

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Fixes erratic frame rates in Big Picture mode.

Regression from 09926a3769.
This commit is contained in:
Stenzek
2026-01-17 23:07:01 +10:00
parent 2c77eabe3a
commit 2a8256673a
4 changed files with 16 additions and 7 deletions
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6
dep/imgui/src/imgui_demo.cpp
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@@ -3581,7 +3581,7 @@ static void DemoWindowWidgetsText()
static float custom_size = 16.0f;
ImGui::SliderFloat("custom_size", &custom_size, 10.0f, 100.0f, "%.0f");
ImGui::Text("ImGui::PushFont(nullptr, custom_size);");
ImGui::PushFont(NULL, custom_size);
ImGui::PushFont(NULL, custom_size, -1.0f);
ImGui::Text("FontSize = %.2f (== %.2f * global_scale)", ImGui::GetFontSize(), custom_size);
ImGui::PopFont();
@@ -3589,14 +3589,14 @@ static void DemoWindowWidgetsText()
static float custom_scale = 1.0f;
ImGui::SliderFloat("custom_scale", &custom_scale, 0.5f, 4.0f, "%.2f");
ImGui::Text("ImGui::PushFont(nullptr, style.FontSizeBase * custom_scale);");
ImGui::PushFont(NULL, style.FontSizeBase * custom_scale);
ImGui::PushFont(NULL, style.FontSizeBase * custom_scale, -1.0f);
ImGui::Text("FontSize = %.2f (== style.FontSizeBase * %.2f * global_scale)", ImGui::GetFontSize(), custom_scale);
ImGui::PopFont();
ImGui::SeparatorText("");
for (float scaling = 0.5f; scaling <= 4.0f; scaling += 0.5f)
{
ImGui::PushFont(NULL, style.FontSizeBase * scaling);
ImGui::PushFont(NULL, style.FontSizeBase * scaling, -1.0f);
ImGui::Text("FontSize = %.2f (== style.FontSizeBase * %.2f * global_scale)", ImGui::GetFontSize(), scaling);
ImGui::PopFont();
}

8
src/core/fullscreenui_widgets.cpp
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@@ -1039,6 +1039,14 @@ void FullscreenUI::EndLayout()
s_state.progress_dialog.Draw();
s_state.message_dialog.Draw();
#if 0
if (HasActiveWindow())
{
s_state.left_fullscreen_footer_text.append_format("FPS: {:.2f} ({:.3f} ms)", GImGui->IO.Framerate,
1000.0f / GImGui->IO.Framerate);
}
#endif
DrawFullscreenFooter();
PopResetLayout();

8
src/util/gpu_device.cpp
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@@ -319,12 +319,12 @@ void GPUSwapChain::ThrottlePresentation()
// Allow it to fall behind/run ahead up to 2*period. Sleep isn't that precise, plus we need to
// allow time for the actual rendering.
const u64 max_variance = sleep_period * 2;
if (static_cast<u64>(std::abs(static_cast<s64>(current_ts - m_last_frame_displayed_time))) > max_variance)
m_last_frame_displayed_time = current_ts + sleep_period;
if (static_cast<u64>(std::abs(static_cast<s64>(current_ts - m_next_throttle_time))) > max_variance)
m_next_throttle_time = current_ts + sleep_period;
else
m_last_frame_displayed_time += sleep_period;
m_next_throttle_time += sleep_period;
Timer::SleepUntil(m_last_frame_displayed_time, false);
Timer::SleepUntil(m_next_throttle_time, false);
}
GPUDevice::GPUDevice()

1
src/util/gpu_device.h
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@@ -502,6 +502,7 @@ protected:
bool m_allow_present_throttle = false;
u64 m_last_frame_displayed_time = 0;
u64 m_next_throttle_time = 0;
};
class GPUDevice