Option to use vulkan

meson.build

@@ -165,19 +165,24 @@ else
   dep_rt = null_dep
 endif
 
-vkh_sp = subproject('vulkan-headers')
-vk_api_xml = vkh_sp.get_variable('vulkan_api_xml')
-dep_vulkan = vkh_sp.get_variable('vulkan_headers_dep')
-
-vk_enum_to_str = custom_target(
-  'vk_enum_to_str',
-  input : ['bin/gen_enum_to_str.py', vk_api_xml],
-  output : ['vk_enum_to_str.c', 'vk_enum_to_str.h'],
-  command : [
-    prog_python, '@INPUT0@', '--xml', '@INPUT1@',
-    '--outdir', meson.current_build_dir()
-  ],
-)
+if get_option('use_vulkan')
+  vkh_sp = subproject('vulkan-headers')
+  vk_api_xml = vkh_sp.get_variable('vulkan_api_xml')
+  dep_vulkan = vkh_sp.get_variable('vulkan_headers_dep')
+
+  vk_enum_to_str = custom_target(
+    'vk_enum_to_str',
+    input : ['bin/gen_enum_to_str.py', vk_api_xml],
+    output : ['vk_enum_to_str.c', 'vk_enum_to_str.h'],
+    command : [
+      prog_python, '@INPUT0@', '--xml', '@INPUT1@',
+      '--outdir', meson.current_build_dir()
+    ],
+  )
+else
+  dep_vulkan = null_dep
+  vk_enum_to_str = []
+endif
 
 imgui_options = [
   'default_library=static',

meson_options.txt

@@ -6,6 +6,7 @@ option('with_nvml', type : 'combo', value : 'enabled', choices: ['enabled', 'sys
 option('with_xnvctrl', type : 'feature', value : 'enabled', description: 'Enable XNVCtrl support')
 option('with_x11', type : 'feature', value : 'enabled')
 option('with_wayland', type : 'feature', value : 'disabled')
+option('use_vulkan', type : 'boolean', value : 'true')
 option('with_dbus', type : 'feature', value : 'enabled')
 option('loglevel', type: 'combo', choices : ['trace', 'debug', 'info', 'warn', 'err', 'critical', 'off'], value : 'info', description: 'Max log level in non-debug build')
 option('mangoapp', type: 'boolean', value : false)

src/hud_elements.cpp

@@ -560,6 +560,7 @@ void HudElements::engine_version(){
         ImguiNextColumnFirstItem();
         ImGui::PushFont(HUDElements.sw_stats->font1);
         if (HUDElements.is_vulkan) {
+#ifdef HAVE_VULKAN
             if ((HUDElements.sw_stats->engine == EngineTypes::DXVK || HUDElements.sw_stats->engine == EngineTypes::VKD3D)){
                 ImGui::TextColored(HUDElements.colors.engine,
                     "%s/%d.%d.%d", HUDElements.sw_stats->engineVersion.c_str(),
@@ -573,6 +574,7 @@ void HudElements::engine_version(){
                     HUDElements.sw_stats->version_vk.minor,
                     HUDElements.sw_stats->version_vk.patch);
             }
+#endif
         } else {
             ImGui::TextColored(HUDElements.colors.engine,
                 "%d.%d%s", HUDElements.sw_stats->version_gl.major, HUDElements.sw_stats->version_gl.minor,
@@ -729,8 +731,10 @@ void HudElements::image(){
 
         HUDElements.image_infos.loaded = true;
         if (HUDElements.is_vulkan) {
+#ifdef HAVE_VULKAN
             if ((HUDElements.image_infos.texture = add_texture(HUDElements.sw_stats, value, &(HUDElements.image_infos.width), &(HUDElements.image_infos.height), maxwidth)))
                 HUDElements.image_infos.valid = true;
+#endif
         } else {
             HUDElements.image_infos.valid = GL_LoadTextureFromFile(value.c_str(),
                                                                 reinterpret_cast<unsigned int*>(&(HUDElements.image_infos.texture)),
@@ -759,8 +763,10 @@ void HudElements::background_image(){
     if (HUDElements.background_image_infos.loaded == false) {
         HUDElements.background_image_infos.loaded = true;
         if (HUDElements.is_vulkan) {
+#ifdef HAVE_VULKAN
             if ((HUDElements.background_image_infos.texture = add_texture(HUDElements.sw_stats, value, &(HUDElements.background_image_infos.width), &(HUDElements.background_image_infos.height), 0)))
                 HUDElements.background_image_infos.valid = true;
+#endif
         } else {
             HUDElements.background_image_infos.valid = GL_LoadTextureFromFile(value.c_str(),
                                                                             reinterpret_cast<unsigned int*>(&(HUDElements.background_image_infos.texture)),

src/meson.build

@@ -41,12 +41,16 @@ vklayer_files = files(
   'logging.cpp',
   'config.cpp',
   'gpu.cpp',
-  'vulkan.cpp',
   'blacklist.cpp',
   'file_utils.cpp',
   'intel.cpp',
   'load_textures.cpp',
 )
+
+if get_option('use_vulkan')
+  vklayer_files += files('vulkan.cpp')
+endif
+
 opengl_files  = []
 if ['windows', 'mingw'].contains(host_machine.system())
   vklayer_files += files(
@@ -142,6 +146,10 @@ if is_unixy
   endif
 endif
 
+if get_option('use_vulkan')
+    pre_args += '-DHAVE_VULKAN'
+endif
+
 link_args = cc.get_supported_link_arguments(['-Wl,-Bsymbolic-functions', '-Wl,-z,relro', '-Wl,--exclude-libs,ALL', '-lGL'])
 # meson fails to check version-script so just force add
 link_args += '-Wl,--version-script,@0@'.format(join_paths(meson.current_source_dir(), 'mangohud.version'))