build: Add flags to toggle specific renderer backends. (#7375)

src/citra_qt/configuration/configure_debug.cpp

@@ -13,7 +13,9 @@
 #include "common/logging/backend.h"
 #include "common/settings.h"
 #include "ui_configure_debug.h"
+#ifdef ENABLE_VULKAN
 #include "video_core/renderer_vulkan/vk_instance.h"
+#endif
 
 // The QSlider doesn't have an easy way to set a custom step amount,
 // so we can just convert from the sliders range (0 - 79) to the expected
@@ -36,6 +38,7 @@ ConfigureDebug::ConfigureDebug(bool is_powered_on_, QWidget* parent)
         QDesktopServices::openUrl(QUrl::fromLocalFile(path));
     });
 
+#ifdef ENABLE_VULKAN
     connect(ui->toggle_renderer_debug, &QCheckBox::clicked, this, [this](bool checked) {
         if (checked && Settings::values.graphics_api.GetValue() == Settings::GraphicsAPI::Vulkan) {
             try {
@@ -65,6 +68,7 @@ ConfigureDebug::ConfigureDebug(bool is_powered_on_, QWidget* parent)
             }
         }
     });
+#endif
 
     ui->toggle_cpu_jit->setEnabled(!is_powered_on);
     ui->toggle_renderer_debug->setEnabled(!is_powered_on);

src/citra_qt/configuration/configure_enhancements.cpp

@@ -7,7 +7,9 @@
 #include "citra_qt/configuration/configure_enhancements.h"
 #include "common/settings.h"
 #include "ui_configure_enhancements.h"
+#ifdef ENABLE_OPENGL
 #include "video_core/renderer_opengl/post_processing_opengl.h"
+#endif
 
 ConfigureEnhancements::ConfigureEnhancements(QWidget* parent)
     : QWidget(parent), ui(std::make_unique<Ui::ConfigureEnhancements>()) {
@@ -117,12 +119,14 @@ void ConfigureEnhancements::updateShaders(Settings::StereoRenderOption stereo_op
 
     ui->shader_combobox->setCurrentIndex(0);
 
+#ifdef ENABLE_OPENGL
     for (const auto& shader : OpenGL::GetPostProcessingShaderList(
              stereo_option == Settings::StereoRenderOption::Anaglyph)) {
         ui->shader_combobox->addItem(QString::fromStdString(shader));
         if (current_shader == shader)
             ui->shader_combobox->setCurrentIndex(ui->shader_combobox->count() - 1);
     }
+#endif
 }
 
 void ConfigureEnhancements::RetranslateUI() {

src/citra_qt/configuration/configure_graphics.cpp

@@ -3,11 +3,14 @@
 // Refer to the license.txt file included.
 
 #include <QColorDialog>
+#include <QStandardItemModel>
 #include "citra_qt/configuration/configuration_shared.h"
 #include "citra_qt/configuration/configure_graphics.h"
 #include "common/settings.h"
 #include "ui_configure_graphics.h"
+#ifdef ENABLE_VULKAN
 #include "video_core/renderer_vulkan/vk_instance.h"
+#endif
 
 ConfigureGraphics::ConfigureGraphics(std::span<const QString> physical_devices, bool is_powered_on,
                                      QWidget* parent)
@@ -27,12 +30,32 @@ ConfigureGraphics::ConfigureGraphics(std::span<const QString> physical_devices,
     // Set the index to -1 to ensure the below lambda is called with setCurrentIndex
     ui->graphics_api_combo->setCurrentIndex(-1);
 
+    auto graphics_api_combo_model =
+        qobject_cast<QStandardItemModel*>(ui->graphics_api_combo->model());
+#ifndef ENABLE_SOFTWARE_RENDERER
+    const auto software_item =
+        graphics_api_combo_model->item(static_cast<u32>(Settings::GraphicsAPI::Software));
+    software_item->setFlags(software_item->flags() & ~Qt::ItemIsEnabled);
+#endif
+#ifndef ENABLE_OPENGL
+    const auto opengl_item =
+        graphics_api_combo_model->item(static_cast<u32>(Settings::GraphicsAPI::OpenGL));
+    opengl_item->setFlags(opengl_item->flags() & ~Qt::ItemIsEnabled);
+#endif
+#ifndef ENABLE_VULKAN
+    const auto vulkan_item =
+        graphics_api_combo_model->item(static_cast<u32>(Settings::GraphicsAPI::Vulkan));
+    vulkan_item->setFlags(vulkan_item->flags() & ~Qt::ItemIsEnabled);
+#else
     if (physical_devices.empty()) {
-        const u32 index = static_cast<u32>(Settings::GraphicsAPI::Vulkan);
-        ui->graphics_api_combo->removeItem(index);
+        const auto vulkan_item =
+            graphics_api_combo_model->item(static_cast<u32>(Settings::GraphicsAPI::Vulkan));
+        vulkan_item->setFlags(vulkan_item->flags() & ~Qt::ItemIsEnabled);
+
         ui->physical_device_combo->setVisible(false);
         ui->spirv_shader_gen->setVisible(false);
     }
+#endif
 
     connect(ui->graphics_api_combo, qOverload<int>(&QComboBox::currentIndexChanged), this,
             [this](int index) {