Fix a few compiler warnings and startup/validation issues at runtime (SaschaWillems#1193)

* Add error recovery to trianglevulkan13 and fix missing "override" compiler warnings

* Look for vkGetPhysicalDeviceFormatProperties2KHR in hostimagecopy example

* Enable fragmentStoresAndAtomics feature to avoid VVL warning in subpasses example

Author: SRSaunders

examples/hostimagecopy/hostimagecopy.cpp

@@ -419,7 +419,7 @@ class VulkanExample : public VulkanExampleBase
 		// Get the function pointers required host image copies
 		vkCopyMemoryToImageEXT = reinterpret_cast<PFN_vkCopyMemoryToImageEXT>(vkGetDeviceProcAddr(device, "vkCopyMemoryToImageEXT"));
 		vkTransitionImageLayoutEXT = reinterpret_cast<PFN_vkTransitionImageLayoutEXT>(vkGetDeviceProcAddr(device, "vkTransitionImageLayoutEXT"));
-		vkGetPhysicalDeviceFormatProperties2 = reinterpret_cast<PFN_vkGetPhysicalDeviceFormatProperties2>(vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceFormatProperties2"));
+		vkGetPhysicalDeviceFormatProperties2 = reinterpret_cast<PFN_vkGetPhysicalDeviceFormatProperties2>(vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceFormatProperties2KHR"));
 
 		loadAssets();
 		loadTexture();

examples/subpasses/subpasses.cpp

@@ -99,6 +99,8 @@ class VulkanExample : public VulkanExampleBase
 		camera.setRotation(glm::vec3(0.5f, 210.05f, 0.0f));
 		camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
 		ui.subpass = 2;
+
+		enabledFeatures.fragmentStoresAndAtomics = VK_TRUE;
 	}
 
 	~VulkanExample()

examples/trianglevulkan13/trianglevulkan13.cpp

@@ -140,6 +140,14 @@ class VulkanExample : public VulkanExampleBase
 		}
 	}
 
+	virtual void getEnabledFeatures() override
+	{
+		// Vulkan 1.3 device support is required for this example
+		if (deviceProperties.apiVersion < VK_API_VERSION_1_3) {
+			vks::tools::exitFatal("Selected GPU does not support support Vulkan 1.3", VK_ERROR_INCOMPATIBLE_DRIVER);
+		}
+	}
+
 	// This function is used to request a device memory type that supports all the property flags we request (e.g. device local, host visible)
 	// Upon success it will return the index of the memory type that fits our requested memory properties
 	// This is necessary as implementations can offer an arbitrary number of memory types with different memory properties