nvflinger: Add toggle to disable buffer swap interval limits

Enabling this setting will allow some titles to present more frames to
the screen as they become available in the nvflinger buffer queue.

8 files changed, 38 insertions, 0 deletions

diff --git a/src/common/settings.h b/src/common/settings.h
index 6198f2d9f..bc3298417 100644
--- a/src/common/settings.h
+++ b/src/common/settings.h
@@ -149,6 +149,7 @@ struct Values {
     Setting<bool> use_nvdec_emulation;
     Setting<bool> accelerate_astc;
     Setting<bool> use_vsync;
+    Setting<bool> disable_fps_limit;
     Setting<bool> use_assembly_shaders;
     Setting<bool> use_asynchronous_shaders;
     Setting<bool> use_fast_gpu_time;
diff --git a/src/core/hle/service/nvflinger/nvflinger.cpp b/src/core/hle/service/nvflinger/nvflinger.cpp
index d1dbc659b..1d810562f 100644
--- a/src/core/hle/service/nvflinger/nvflinger.cpp
+++ b/src/core/hle/service/nvflinger/nvflinger.cpp
@@ -307,6 +307,9 @@ void NVFlinger::Compose() {
 }
 
 s64 NVFlinger::GetNextTicks() const {
+    if (Settings::values.disable_fps_limit.GetValue()) {
+        return 0;
+    }
     constexpr s64 max_hertz = 120LL;
     return (1000000000 * (1LL << swap_interval)) / max_hertz;
 }
diff --git a/src/yuzu/configuration/config.cpp b/src/yuzu/configuration/config.cpp
index 916a22724..733cd0a04 100644
--- a/src/yuzu/configuration/config.cpp
+++ b/src/yuzu/configuration/config.cpp
@@ -811,6 +811,8 @@ void Config::ReadRendererValues() {
                       true);
     ReadSettingGlobal(Settings::values.accelerate_astc, QStringLiteral("accelerate_astc"), true);
     ReadSettingGlobal(Settings::values.use_vsync, QStringLiteral("use_vsync"), true);
+    ReadSettingGlobal(Settings::values.disable_fps_limit, QStringLiteral("disable_fps_limit"),
+                      false);
     ReadSettingGlobal(Settings::values.use_assembly_shaders, QStringLiteral("use_assembly_shaders"),
                       false);
     ReadSettingGlobal(Settings::values.use_asynchronous_shaders,
@@ -1395,6 +1397,8 @@ void Config::SaveRendererValues() {
                        true);
     WriteSettingGlobal(QStringLiteral("accelerate_astc"), Settings::values.accelerate_astc, true);
     WriteSettingGlobal(QStringLiteral("use_vsync"), Settings::values.use_vsync, true);
+    WriteSettingGlobal(QStringLiteral("disable_fps_limit"), Settings::values.disable_fps_limit,
+                       false);
     WriteSettingGlobal(QStringLiteral("use_assembly_shaders"),
                        Settings::values.use_assembly_shaders, false);
     WriteSettingGlobal(QStringLiteral("use_asynchronous_shaders"),
diff --git a/src/yuzu/configuration/configure_graphics_advanced.cpp b/src/yuzu/configuration/configure_graphics_advanced.cpp
index 35bf9c6be..1af87e849 100644
--- a/src/yuzu/configuration/configure_graphics_advanced.cpp
+++ b/src/yuzu/configuration/configure_graphics_advanced.cpp
@@ -28,6 +28,7 @@ void ConfigureGraphicsAdvanced::SetConfiguration() {
     ui->anisotropic_filtering_combobox->setEnabled(runtime_lock);
 
     ui->use_vsync->setChecked(Settings::values.use_vsync.GetValue());
+    ui->disable_fps_limit->setChecked(Settings::values.disable_fps_limit.GetValue());
     ui->use_assembly_shaders->setChecked(Settings::values.use_assembly_shaders.GetValue());
     ui->use_asynchronous_shaders->setChecked(Settings::values.use_asynchronous_shaders.GetValue());
     ui->use_fast_gpu_time->setChecked(Settings::values.use_fast_gpu_time.GetValue());
@@ -57,6 +58,8 @@ void ConfigureGraphicsAdvanced::ApplyConfiguration() {
     ConfigurationShared::ApplyPerGameSetting(&Settings::values.max_anisotropy,
                                              ui->anisotropic_filtering_combobox);
     ConfigurationShared::ApplyPerGameSetting(&Settings::values.use_vsync, ui->use_vsync, use_vsync);
+    ConfigurationShared::ApplyPerGameSetting(&Settings::values.disable_fps_limit,
+                                             ui->disable_fps_limit, disable_fps_limit);
     ConfigurationShared::ApplyPerGameSetting(&Settings::values.use_assembly_shaders,
                                              ui->use_assembly_shaders, use_assembly_shaders);
     ConfigurationShared::ApplyPerGameSetting(&Settings::values.use_asynchronous_shaders,
@@ -97,6 +100,7 @@ void ConfigureGraphicsAdvanced::SetupPerGameUI() {
     if (Settings::IsConfiguringGlobal()) {
         ui->gpu_accuracy->setEnabled(Settings::values.gpu_accuracy.UsingGlobal());
         ui->use_vsync->setEnabled(Settings::values.use_vsync.UsingGlobal());
+        ui->disable_fps_limit->setEnabled(Settings::values.disable_fps_limit.UsingGlobal());
         ui->use_assembly_shaders->setEnabled(Settings::values.use_assembly_shaders.UsingGlobal());
         ui->use_asynchronous_shaders->setEnabled(
             Settings::values.use_asynchronous_shaders.UsingGlobal());
@@ -108,6 +112,8 @@ void ConfigureGraphicsAdvanced::SetupPerGameUI() {
     }
 
     ConfigurationShared::SetColoredTristate(ui->use_vsync, Settings::values.use_vsync, use_vsync);
+    ConfigurationShared::SetColoredTristate(ui->disable_fps_limit,
+                                            Settings::values.disable_fps_limit, disable_fps_limit);
     ConfigurationShared::SetColoredTristate(
         ui->use_assembly_shaders, Settings::values.use_assembly_shaders, use_assembly_shaders);
     ConfigurationShared::SetColoredTristate(ui->use_asynchronous_shaders,
diff --git a/src/yuzu/configuration/configure_graphics_advanced.h b/src/yuzu/configuration/configure_graphics_advanced.h
index e61b571c7..c19c34851 100644
--- a/src/yuzu/configuration/configure_graphics_advanced.h
+++ b/src/yuzu/configuration/configure_graphics_advanced.h
@@ -35,6 +35,7 @@ private:
     std::unique_ptr<Ui::ConfigureGraphicsAdvanced> ui;
 
     ConfigurationShared::CheckState use_vsync;
+    ConfigurationShared::CheckState disable_fps_limit;
     ConfigurationShared::CheckState use_assembly_shaders;
     ConfigurationShared::CheckState use_asynchronous_shaders;
     ConfigurationShared::CheckState use_fast_gpu_time;
diff --git a/src/yuzu/configuration/configure_graphics_advanced.ui b/src/yuzu/configuration/configure_graphics_advanced.ui
index 846a30586..824cb2fb2 100644
--- a/src/yuzu/configuration/configure_graphics_advanced.ui
+++ b/src/yuzu/configuration/configure_graphics_advanced.ui
@@ -77,6 +77,24 @@
          </widget>
         </item>
         <item>
+         <widget class="QCheckBox" name="disable_fps_limit">
+          <property name="enabled">
+           <bool>true</bool>
+          </property>
+          <property name="toolTip">
+           <string>
+            &lt;html&gt;&lt;head/&gt;&lt;body&gt;
+            &lt;p&gt;Presents guest frames as they become available, disabling the FPS limit in most titles.&lt;/p&gt;
+            &lt;p&gt;NOTE: Will cause instabilities.&lt;/p&gt;
+            &lt;/body&gt;&lt;/html&gt;
+           </string>
+          </property>
+          <property name="text">
+           <string>Disable framerate limit (experimental)</string>
+          </property>
+         </widget>
+        </item>
+        <item>
          <widget class="QCheckBox" name="use_assembly_shaders">
           <property name="toolTip">
            <string>Enabling this reduces shader stutter. Enables OpenGL assembly shaders on supported Nvidia devices (NV_gpu_program5 is required). This feature is experimental.</string>
diff --git a/src/yuzu_cmd/config.cpp b/src/yuzu_cmd/config.cpp
index 621b31571..60bf66ec0 100644
--- a/src/yuzu_cmd/config.cpp
+++ b/src/yuzu_cmd/config.cpp
@@ -443,6 +443,8 @@ void Config::ReadValues() {
         sdl2_config->GetBoolean("Renderer", "use_asynchronous_gpu_emulation", true));
     Settings::values.use_vsync.SetValue(
         static_cast<u16>(sdl2_config->GetInteger("Renderer", "use_vsync", 1)));
+    Settings::values.disable_fps_limit.SetValue(
+        sdl2_config->GetBoolean("Renderer", "disable_fps_limit", false));
     Settings::values.use_assembly_shaders.SetValue(
         sdl2_config->GetBoolean("Renderer", "use_assembly_shaders", true));
     Settings::values.use_asynchronous_shaders.SetValue(
diff --git a/src/yuzu_cmd/default_ini.h b/src/yuzu_cmd/default_ini.h
index 37d895ebd..c960ccf89 100644
--- a/src/yuzu_cmd/default_ini.h
+++ b/src/yuzu_cmd/default_ini.h
@@ -362,6 +362,9 @@ use_debug_asserts =
 use_auto_stub =
 # Enables/Disables the macro JIT compiler
 disable_macro_jit=false
+# Presents guest frames as they become available. Experimental.
+# false: Disabled (default), true: Enabled
+disable_fps_limit=false
 
 [WebService]
 # Whether or not to enable telemetry