mangoapp: let gamescope decide when to send updates

src/app/main.cpp

@@ -28,7 +28,6 @@ static ImVec2 window_size;
 static uint32_t vendorID;
 static std::string deviceName;
 static notify_thread notifier;
-struct mangoapp_ctrl_msg_v1 mangoapp_ctrl;
 int msgid;
 bool mangoapp_paused = false;
 std::mutex mangoapp_m;
@@ -36,8 +35,6 @@ std::condition_variable mangoapp_cv;
 static uint8_t raw_msg[1024] = {0};
 
 void msg_read_thread(){
-    mangoapp_ctrl.hdr.version = 1;
-    mangoapp_ctrl.hdr.msg_type = 2;
     int key = ftok("mangoapp", 65);
     msgid = msgget(key, 0666 | IPC_CREAT);
     const struct mangoapp_msg_header *hdr = (const struct mangoapp_msg_header*) raw_msg;
@@ -156,7 +153,8 @@ int main(int, char**)
 
             // Rendering
             ImGui::Render();
-            int display_w, display_h;
+            static int display_w, display_h;
+            glfwSetWindowSize(window, window_size.x + 45.f, window_size.y + 10.f);
             glfwGetFramebufferSize(window, &display_w, &display_h);
             glEnable(GL_DEPTH_TEST);        
             glEnable(GL_BLEND);             

src/app/mangoapp.h

@@ -4,7 +4,6 @@
 #include <mutex>
 #include <condition_variable>
 
-extern struct mangoapp_ctrl_msg_v1 mangoapp_ctrl;
 extern int ctrl_msgid;
 extern int msgid;
 extern bool mangoapp_paused;
@@ -21,11 +20,4 @@ struct mangoapp_msg_v1 {
     uint32_t pid;
     uint64_t frametime_ns;
     // WARNING: Always ADD fields, never remove or repurpose fields
-} __attribute__((packed));
-
-struct mangoapp_ctrl_msg_v1 {
-    struct mangoapp_msg_header hdr;
-
-    uint8_t ready_for_updates;
-    // WARNING: Always ADD fields, never remove or re-purpose fields
 } __attribute__((packed));

src/overlay_params.cpp

@@ -807,8 +807,6 @@ parse_overlay_config(struct overlay_params *params,
    if(params->autostart_log && !logger->is_active())
       std::thread(autostart_log, params->autostart_log).detach();
 #ifdef MANGOAPP
-   mangoapp_ctrl.ready_for_updates = int(!params->no_display);
-   msgsnd(msgid, &mangoapp_ctrl, sizeof(mangoapp_ctrl), IPC_NOWAIT);
    {
       std::lock_guard<std::mutex> lk(mangoapp_m);
       params->no_display = params->no_display;