is_vulkan_portability incorectly set

is_vulkan_portability is only dependent on the instance extension (which may be available)

Lines 191 to 192 in 3d9720a

    
           let is_vulkan_portability = 
        
               supported_instance_extensions.contains(&vk::KhrPortabilityEnumerationFn::name());

while the device may not support it

blade/blade-graphics/src/vulkan/init.rs

Lines 275 to 277 in 3d9720a

    
           if is_vulkan_portability { 
        
               device_extensions.push(vk::KhrPortabilitySubsetFn::name()); 
        
           }

resulting in: thread 'main' panicked at 'called Result::unwrap() on an Err value: ERROR_EXTENSION_NOT_PRESENT', blade-graphics\src\vulkan\init.rs:340:18 on my pc (Windows 10 RTX 4090)

This is instance extension and should be enabled for instance, not for the device.
One can enable only extensions that are present. i.e. instance extensions returned from vkEnumerateInstanceExtensionPropertices and device extensions returned from vkEnumerateDeviceExtensionProperties

Makes sense, thanks for filing!
Should be fixed with d9c76cf

	let is_vulkan_portability =
	supported_instance_extensions.contains(&vk::KhrPortabilityEnumerationFn::name());

	if is_vulkan_portability {
	device_extensions.push(vk::KhrPortabilitySubsetFn::name());
	}