qt: Add shader compiler threads to GUI

rpcs3/rpcs3qt/emu_settings_type.h

@@ -71,6 +71,7 @@ enum class emu_settings_type
 	DisableOnDiskShaderCache,
 	DisableVulkanMemAllocator,
 	ShaderMode,
+	ShaderCompilerNumThreads,
 	MultithreadedRSX,
 	VBlankRate,
 	RelaxedZCULL,
@@ -211,6 +212,7 @@ static const QMap<emu_settings_type, cfg_location> settings_location =
 	{ emu_settings_type::DisableOnDiskShaderCache,   { "Video", "Disable On-Disk Shader Cache"}},
 	{ emu_settings_type::DisableVulkanMemAllocator,  { "Video", "Disable Vulkan Memory Allocator"}},
 	{ emu_settings_type::ShaderMode,                 { "Video", "Shader Mode"}},
+	{ emu_settings_type::ShaderCompilerNumThreads,   { "Video", "Shader Compiler Threads"}},
 	{ emu_settings_type::MultithreadedRSX,           { "Video", "Multithreaded RSX"}},
 	{ emu_settings_type::RelaxedZCULL,               { "Video", "Relaxed ZCULL Sync"}},
 	{ emu_settings_type::AnisotropicFilterOverride,  { "Video", "Anisotropic Filter Override"}},

rpcs3/rpcs3qt/settings_dialog.cpp

@@ -392,6 +392,11 @@ settings_dialog::settings_dialog(std::shared_ptr<gui_settings> gui_settings, std
 		}
 	}
 
+	// Comboboxes
+	m_emu_settings->EnhanceComboBox(ui->shaderCompilerThreads, emu_settings_type::ShaderCompilerNumThreads, true);
+	SubscribeTooltip(ui->gb_shader_compiler_threads, tooltips.settings.shader_compiler_threads);
+	ui->shaderCompilerThreads->setItemText(ui->shaderCompilerThreads->findData(0), tr("Auto", "Number of Shader Compiler Threads"));
+
 	// Checkboxes: main options
 	m_emu_settings->EnhanceCheckBox(ui->dumpColor, emu_settings_type::WriteColorBuffers);
 	SubscribeTooltip(ui->dumpColor, tooltips.settings.dump_color);

rpcs3/rpcs3qt/settings_dialog.ui

@@ -10,7 +10,7 @@
     <x>0</x>
     <y>0</y>
     <width>753</width>
-    <height>620</height>
+    <height>650</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -38,6 +38,9 @@
        <verstretch>0</verstretch>
       </sizepolicy>
      </property>
+     <property name="currentIndex">
+      <number>1</number>
+     </property>
      <widget class="QWidget" name="coreTab">
       <attribute name="title">
        <string>CPU</string>
@@ -682,6 +685,18 @@
              </layout>
             </widget>
            </item>
+           <item>
+            <widget class="QGroupBox" name="gb_shader_compiler_threads">
+             <property name="title">
+              <string>Number of Shader Compiler Threads</string>
+             </property>
+             <layout class="QVBoxLayout" name="gb_shader_compiler_threads_layout">
+              <item>
+               <widget class="QComboBox" name="shaderCompilerThreads"/>
+              </item>
+             </layout>
+            </widget>
+           </item>
            <item>
             <widget class="QGroupBox" name="gb_additional_settings">
              <property name="sizePolicy">

rpcs3/rpcs3qt/tooltips.h

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include <QString>
 #include <QObject>
@@ -155,6 +155,7 @@ public:
 		const QString async_shader_recompiler         = tr("This is the recommended option.\nIf a shader is not found in the cache, nothing will be rendered for this shader until it has compiled.\nYou may experience graphics pop-in.");
 		const QString async_with_shader_interpreter   = tr("Hybrid rendering mode.\nIf a shader is not found in the cache, the interpreter will be used to render approximated graphics for this shader until it has compiled.");
 		const QString shader_interpreter_only         = tr("All rendering is handled by the interpreter with no attempt to compile native shaders.\nThis mode is very slow and experimental.");
+		const QString shader_compiler_threads         = tr("Number of threads to use for the shader compiler backend.\nOnly has an impact when shader mode is set to one of the asynchronous modes.");
 
 		// gui