stop writing imgui.ini

meson.build

@@ -29,12 +29,19 @@ deps = [
   dependency('glfw3', include_type: 'system'),
   dependency('glm', include_type: 'system'),
   dependency('vulkan', include_type: 'system'),
-  cpp.find_library('imgui'),
 ]
 
+imgui_dep = dependency('imgui', required: false, include_type: 'system')
+
+if not imgui_dep.found()
+  imgui_dep = cpp.find_library('imgui', required: true)
+endif
+
+deps += imgui_dep
+
 executable(
   'graphics-test',
   sources: files('src/main.cpp'),
   include_directories: include_directories('include', is_system: true),
   dependencies: deps,
-)
+)

src/main.cpp

@@ -342,6 +342,14 @@ class VulkanApp {
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
 
+    // Remember to use a reference here, otherwise
+    // the ImGui::GetIO() function will return a
+    // copy and the changes won't be saved.
+    ImGuiIO& imGuiIO = ImGui::GetIO();
+
+    // Disable writing imgui.ini
+    imGuiIO.IniFilename = nullptr;
+
     // Setup Dear ImGui style
     ImGui::StyleColorsDark();
 
@@ -370,7 +378,7 @@ class VulkanApp {
       .Queue                       = mGraphicsQueue,
       .DescriptorPool              = mImGuiDescriptorPool.get(),
       .RenderPass                  = mRenderPass.get(),
-      .MinImageCount               = 1,
+      .MinImageCount               = MAX_FRAMES_IN_FLIGHT,
       .ImageCount                  = static_cast<uint32_t>(mSwapChainImages.size()),
       .MSAASamples                 = static_cast<VkSampleCountFlagBits>(mMsaaSamples),
       .PipelineCache               = VK_NULL_HANDLE,