pull engine from gamescope

src/app/main.cpp

@@ -149,6 +149,26 @@ static void gamescope_frametime(uint64_t app_frametime_ns, uint64_t latency_ns){
         HUDElements.gamescope_debug_latency.erase(HUDElements.gamescope_debug_latency.begin());
 }
 
+static EngineTypes engine_type_from_str(std::string engineName) {
+    if (engineName == "DXVK")
+        return DXVK;
+
+    else if (engineName == "vkd3d")
+        return VKD3D;
+
+    else if(engineName == "mesa zink")
+        return ZINK;
+
+    else if (engineName == "Damavand")
+        return DAMAVAND;
+
+    else if (engineName == "Feral3D")
+        return FERAL3D;
+
+    else
+        return VULKAN;
+}
+
 static void msg_read_thread(){
     for (size_t i = 0; i < 200; i++){
         HUDElements.gamescope_debug_app.push_back(0);
@@ -210,6 +230,13 @@ static void msg_read_thread(){
                         screenWidth = mangoapp_v1->outputWidth;
                         screenHeight = mangoapp_v1->outputHeight;
                     }
+
+                    if (msg_size > offsetof(mangoapp_msg_v1, engineName)) {
+                        if (!steam_focused)
+                            sw_stats.engine = engine_type_from_str(std::string(mangoapp_v1->engineName));
+                    } else {
+                        sw_stats.engine = EngineTypes::GAMESCOPE;
+                    }
                 }
             } else {
                 printf("Unsupported mangoapp struct version: %i\n", hdr->version);

src/app/mangoapp_proto.h

@@ -17,6 +17,11 @@ struct mangoapp_msg_v1 {
     uint64_t latency_ns;
     uint32_t outputWidth;
     uint32_t outputHeight;
+    uint16_t displayRefresh;
+    bool bAppWantsHDR : 1;
+    bool bSteamFocused : 1;
+    char engineName[40];
+
     // WARNING: Always ADD fields, never remove or repurpose fields
 } __attribute__((packed));