From 2f09c7ddd314f03da0fbafacfcae6b0a47a209ae Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 22 Jun 2020 04:10:45 -0300
Subject: 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 | 28 ++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

(limited to 'src/video_core/renderer_vulkan/renderer_vulkan.cpp')

diff --git a/src/video_core/renderer_vulkan/renderer_vulkan.cpp b/src/video_core/renderer_vulkan/renderer_vulkan.cpp
index cd9673d1f..2d9b18ed9 100644
--- a/src/video_core/renderer_vulkan/renderer_vulkan.cpp
+++ b/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"};
-    vk::Span<const char*> layers = layers_data;
-    if (!enable_layers) {
-        layers = {};
+    std::vector<const char*> layers;
+    layers.reserve(1);
+    if (enable_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");
-- 
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