core: support offline web applet

src/core/hle/service/vi/display/vi_display.cpp

@@ -53,7 +53,7 @@ Display::~Display() {
 Layer& Display::GetLayer(std::size_t index) {
     size_t i = 0;
     for (auto& layer : layers) {
-        if (!layer->IsOpen()) {
+        if (!layer->IsOpen() || !layer->IsVisible()) {
             continue;
         }
 
@@ -68,7 +68,7 @@ Layer& Display::GetLayer(std::size_t index) {
 }
 
 size_t Display::GetNumLayers() const {
-    return std::ranges::count_if(layers, [](auto& l) { return l->IsOpen(); });
+    return std::ranges::count_if(layers, [](auto& l) { return l->IsOpen() && l->IsVisible(); });
 }
 
 Kernel::KReadableEvent* Display::GetVSyncEvent() {

src/core/hle/service/vi/layer/vi_layer.cpp

@@ -9,7 +9,7 @@ Layer::Layer(u64 layer_id_, u32 binder_id_, android::BufferQueueCore& core_,
              android::BufferQueueProducer& binder_,
              std::shared_ptr<android::BufferItemConsumer>&& consumer_)
     : layer_id{layer_id_}, binder_id{binder_id_}, core{core_}, binder{binder_},
-      consumer{std::move(consumer_)}, open{false} {}
+      consumer{std::move(consumer_)}, open{false}, visible{true} {}
 
 Layer::~Layer() = default;
 

src/core/hle/service/vi/layer/vi_layer.h

@@ -72,6 +72,14 @@ public:
         return core;
     }
 
+    bool IsVisible() const {
+        return visible;
+    }
+
+    void SetVisibility(bool v) {
+        visible = v;
+    }
+
     bool IsOpen() const {
         return open;
     }
@@ -91,6 +99,7 @@ private:
     android::BufferQueueProducer& binder;
     std::shared_ptr<android::BufferItemConsumer> consumer;
     bool open;
+    bool visible;
 };
 
 } // namespace Service::VI