yuzu: Add frontend settings for assembly shaders

Add settings for assembly shaders. Currently hidden to avoid users from
accidentally enabled them.

src/core/settings.cpp

@@ -112,6 +112,7 @@ void LogSettings() {
     LogSetting("Renderer_UseAsynchronousGpuEmulation",
                Settings::values.use_asynchronous_gpu_emulation);
     LogSetting("Renderer_UseVsync", Settings::values.use_vsync);
+    LogSetting("Renderer_UseAssemblyShaders", Settings::values.use_assembly_shaders);
     LogSetting("Renderer_AnisotropicFilteringLevel", Settings::values.max_anisotropy);
     LogSetting("Audio_OutputEngine", Settings::values.sink_id);
     LogSetting("Audio_EnableAudioStretching", Settings::values.enable_audio_stretching);

src/core/settings.h

@@ -446,6 +446,7 @@ struct Values {
     GPUAccuracy gpu_accuracy;
     bool use_asynchronous_gpu_emulation;
     bool use_vsync;
+    bool use_assembly_shaders;
     bool force_30fps_mode;
     bool use_fast_gpu_time;
 

src/core/telemetry_session.cpp

@@ -201,6 +201,7 @@ void TelemetrySession::AddInitialInfo(Loader::AppLoader& app_loader) {
     AddField(field_type, "Renderer_UseAsynchronousGpuEmulation",
              Settings::values.use_asynchronous_gpu_emulation);
     AddField(field_type, "Renderer_UseVsync", Settings::values.use_vsync);
+    AddField(field_type, "Renderer_UseAssemblyShaders", Settings::values.use_assembly_shaders);
     AddField(field_type, "System_UseDockedMode", Settings::values.use_docked_mode);
 }
 

src/yuzu/configuration/config.cpp

@@ -643,6 +643,8 @@ void Config::ReadRendererValues() {
     Settings::values.use_asynchronous_gpu_emulation =
         ReadSetting(QStringLiteral("use_asynchronous_gpu_emulation"), false).toBool();
     Settings::values.use_vsync = ReadSetting(QStringLiteral("use_vsync"), true).toBool();
+    Settings::values.use_assembly_shaders =
+        ReadSetting(QStringLiteral("use_assembly_shaders"), false).toBool();
     Settings::values.use_fast_gpu_time =
         ReadSetting(QStringLiteral("use_fast_gpu_time"), true).toBool();
     Settings::values.force_30fps_mode =
@@ -1090,6 +1092,8 @@ void Config::SaveRendererValues() {
     WriteSetting(QStringLiteral("use_asynchronous_gpu_emulation"),
                  Settings::values.use_asynchronous_gpu_emulation, false);
     WriteSetting(QStringLiteral("use_vsync"), Settings::values.use_vsync, true);
+    WriteSetting(QStringLiteral("use_assembly_shaders"), Settings::values.use_assembly_shaders,
+                 false);
     WriteSetting(QStringLiteral("use_fast_gpu_time"), Settings::values.use_fast_gpu_time, true);
     WriteSetting(QStringLiteral("force_30fps_mode"), Settings::values.force_30fps_mode, false);
 

src/yuzu/configuration/configure_graphics_advanced.cpp

@@ -12,6 +12,9 @@ ConfigureGraphicsAdvanced::ConfigureGraphicsAdvanced(QWidget* parent)
 
     ui->setupUi(this);
 
+    // TODO: Remove this after assembly shaders are fully integrated
+    ui->use_assembly_shaders->setVisible(false);
+
     SetConfiguration();
 }
 
@@ -22,6 +25,8 @@ void ConfigureGraphicsAdvanced::SetConfiguration() {
     ui->gpu_accuracy->setCurrentIndex(static_cast<int>(Settings::values.gpu_accuracy));
     ui->use_vsync->setEnabled(runtime_lock);
     ui->use_vsync->setChecked(Settings::values.use_vsync);
+    ui->use_assembly_shaders->setEnabled(runtime_lock);
+    ui->use_assembly_shaders->setChecked(Settings::values.use_assembly_shaders);
     ui->use_fast_gpu_time->setChecked(Settings::values.use_fast_gpu_time);
     ui->force_30fps_mode->setEnabled(runtime_lock);
     ui->force_30fps_mode->setChecked(Settings::values.force_30fps_mode);
@@ -33,6 +38,7 @@ void ConfigureGraphicsAdvanced::ApplyConfiguration() {
     auto gpu_accuracy = static_cast<Settings::GPUAccuracy>(ui->gpu_accuracy->currentIndex());
     Settings::values.gpu_accuracy = gpu_accuracy;
     Settings::values.use_vsync = ui->use_vsync->isChecked();
+    Settings::values.use_assembly_shaders = ui->use_assembly_shaders->isChecked();
     Settings::values.use_fast_gpu_time = ui->use_fast_gpu_time->isChecked();
     Settings::values.force_30fps_mode = ui->force_30fps_mode->isChecked();
     Settings::values.max_anisotropy = ui->anisotropic_filtering_combobox->currentIndex();

src/yuzu/configuration/configure_graphics_advanced.ui

@@ -62,6 +62,16 @@
           </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>
+          </property>
+          <property name="text">
+           <string>Use assembly shaders (experimental, Nvidia OpenGL only)</string>
+          </property>
+         </widget>
+        </item>
         <item>
          <widget class="QCheckBox" name="force_30fps_mode">
           <property name="text">

src/yuzu_cmd/config.cpp

@@ -397,6 +397,8 @@ void Config::ReadValues() {
         sdl2_config->GetBoolean("Renderer", "use_asynchronous_gpu_emulation", false);
     Settings::values.use_vsync =
         static_cast<u16>(sdl2_config->GetInteger("Renderer", "use_vsync", 1));
+    Settings::values.use_assembly_shaders =
+        sdl2_config->GetBoolean("Renderer", "use_assembly_shaders", false);
     Settings::values.use_fast_gpu_time =
         sdl2_config->GetBoolean("Renderer", "use_fast_gpu_time", true);
 

src/yuzu_cmd/default_ini.h

@@ -134,6 +134,10 @@ max_anisotropy =
 # 0 (default): Off, 1: On
 use_vsync =
 
+# Whether to use OpenGL assembly shaders or not. NV_gpu_program5 is required.
+# 0 (default): Off, 1: On
+use_assembly_shaders =
+
 # Turns on the frame limiter, which will limit frames output to the target game speed
 # 0: Off, 1: On (default)
 use_frame_limit =