renderer_vulkan: Update validation layer name and test before enabling

Update validation layer string to VK_LAYER_KHRONOS_validation.

While we are at it, properly check for available validation layers
before enabling them.

src/video_core/renderer_vulkan/renderer_vulkan.cpp

@@ -155,11 +155,31 @@ vk::Instance CreateInstance(Common::DynamicLibrary& library, vk::InstanceDispatc
         }
     }
 
-    static constexpr std::array layers_data{"VK_LAYER_LUNARG_standard_validation"};
+    std::vector<const char*> layers;
-    vk::Span<const char*> layers = layers_data;
+    layers.reserve(1);
-    if (!enable_layers) {
+    if (enable_layers) {
-        layers = {};
+        layers.push_back("VK_LAYER_KHRONOS_validation");
     }
+
+    const std::optional layer_properties = vk::EnumerateInstanceLayerProperties(dld);
+    if (!layer_properties) {
+        LOG_ERROR(Render_Vulkan, "Failed to query layer properties, disabling layers");
+        layers.clear();
+    }
+
+    for (auto layer_it = layers.begin(); layer_it != layers.end();) {
+        const char* const layer = *layer_it;
+        const auto it = std::find_if(
+            layer_properties->begin(), layer_properties->end(),
+            [layer](const VkLayerProperties& prop) { return !std::strcmp(layer, prop.layerName); });
+        if (it == layer_properties->end()) {
+            LOG_ERROR(Render_Vulkan, "Layer {} not available, removing it", layer);
+            layer_it = layers.erase(layer_it);
+        } else {
+            ++layer_it;
+        }
+    }
+
     vk::Instance instance = vk::Instance::Create(layers, extensions, dld);
     if (!instance) {
         LOG_ERROR(Render_Vulkan, "Failed to create Vulkan instance");

src/video_core/renderer_vulkan/wrapper.cpp

@@ -153,7 +153,8 @@ void Load(VkDevice device, DeviceDispatch& dld) noexcept {
 
 bool Load(InstanceDispatch& dld) noexcept {
 #define X(name) Proc(dld.name, dld, #name)
-    return X(vkCreateInstance) && X(vkEnumerateInstanceExtensionProperties);
+    return X(vkCreateInstance) && X(vkEnumerateInstanceExtensionProperties) &&
+           X(vkEnumerateInstanceLayerProperties);
 #undef X
 }
 
@@ -770,4 +771,17 @@ std::optional<std::vector<VkExtensionProperties>> EnumerateInstanceExtensionProp
     return properties;
 }
 
+std::optional<std::vector<VkLayerProperties>> EnumerateInstanceLayerProperties(
+    const InstanceDispatch& dld) {
+    u32 num;
+    if (dld.vkEnumerateInstanceLayerProperties(&num, nullptr) != VK_SUCCESS) {
+        return std::nullopt;
+    }
+    std::vector<VkLayerProperties> properties(num);
+    if (dld.vkEnumerateInstanceLayerProperties(&num, properties.data()) != VK_SUCCESS) {
+        return std::nullopt;
+    }
+    return properties;
+}
+
 } // namespace Vulkan::vk

src/video_core/renderer_vulkan/wrapper.h

@@ -141,6 +141,7 @@ struct InstanceDispatch {
     PFN_vkCreateInstance vkCreateInstance;
     PFN_vkDestroyInstance vkDestroyInstance;
     PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties;
+    PFN_vkEnumerateInstanceLayerProperties vkEnumerateInstanceLayerProperties;
 
     PFN_vkCreateDebugUtilsMessengerEXT vkCreateDebugUtilsMessengerEXT;
     PFN_vkCreateDevice vkCreateDevice;
@@ -996,4 +997,7 @@ private:
 std::optional<std::vector<VkExtensionProperties>> EnumerateInstanceExtensionProperties(
     const InstanceDispatch& dld);
 
+std::optional<std::vector<VkLayerProperties>> EnumerateInstanceLayerProperties(
+    const InstanceDispatch& dld);
+
 } // namespace Vulkan::vk