Set VK_LAYER_KHRONOS_validation to optional in case layer not available for debug builds

SRSaunders · SRSaunders · commit 456f38298a80 · 2026-03-07T09:54:07.000-05:00
diff --git a/framework/vulkan_sample.h b/framework/vulkan_sample.h
@@ -1362,7 +1362,8 @@ template <vkb::BindingType bindingType>
 inline void VulkanSample<bindingType>::request_layers(std::unordered_map<std::string, vkb::RequestMode> &requested_layers) const
 {
 #if defined(VKB_DEBUG) || defined(VKB_VALIDATION_LAYERS)
-	requested_layers["VK_LAYER_KHRONOS_validation"] = vkb::RequestMode::Required;
+	// VK_LAYER_KHRONOS_validation must be optional in case layer not available for debug builds (e.g. running on Windows with no SDK installed or on iOS Simulator)
+	requested_layers["VK_LAYER_KHRONOS_validation"] = vkb::RequestMode::Optional;
 #endif
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1362,7 +1362,8 @@ template <vkb::BindingType bindingType>`
`1362`	`1362`	`inline void VulkanSample<bindingType>::request_layers(std::unordered_map<std::string, vkb::RequestMode> &requested_layers) const`
`1363`	`1363`	`{`
`1364`	`1364`	`#if defined(VKB_DEBUG) \|\| defined(VKB_VALIDATION_LAYERS)`
`1365`		`- requested_layers["VK_LAYER_KHRONOS_validation"] = vkb::RequestMode::Required;`
	`1365`	`+ // VK_LAYER_KHRONOS_validation must be optional in case layer not available for debug builds (e.g. running on Windows with no SDK installed or on iOS Simulator)`
	`1366`	`+ requested_layers["VK_LAYER_KHRONOS_validation"] = vkb::RequestMode::Optional;`
`1366`	`1367`	`#endif`
`1367`	`1368`	`}`
`1368`	`1369`