vkCreateDevice() issues

[shaofent]

I am new to Vulkan. I am following some tutorials to setup Vulkan basic stuffs. However, when I run my program, the validation layer gives me something like:’

vkCreateSampler: value of pCreateInfo->flags contains flag bits that are note recognized members of VkSamplerCreateFlagBits
vkCreateSampler: value of pCrreateInfo->anisotropyEnable (524657200) is nether VK_TRUE nor VK_FALSE
vkCreateSampler: value of pCreateInfo0>compareEnable (-2) is neither VK_TRUE nor VK_FALSE

I track my codes and find that these infomations come from calling vkCreateDevice(). Although the creation function returns VK_SUCCESS, these validation layer information makes me feel something wrong.
Can somebody help me explain this? Thanks a lot.

[IAmNotHanni]

Are you sure that’s caused by vkCreateDevice? It sounds more like an error related to the creation of image samplers. Can you post the code of you device creation?

[AndreyOGL_D3D]

Please initialize variables, before first using, like as:

VkSamplerCreateInfo vkSamplerCreateInfo = {};

vkCreateSampler(..., &vkSamplerCreateInfo ,...);

[shaofent]

But, I haven’t used VkSamplerCreateInfo yet. It is weird.

[shaofent]

Yep. It looks like something wrong with image samplers. But I haven’t used VkSamplerCreateInfo yet. I run my code in debug mode and set several breakpoints to see when these information pop up. And just after executing vkCreateDevice(), these information pops up in the console.

[IAmNotHanni]

Can you please post the code which executed vkCreateDevice? otherwise I don’t think we have a chance of understanding the problem

[IAmNotHanni]

It occurs to me that you filled out some structure incorrectly. Look how it says “contains flag bits that are note recognized…”

[shaofent]

These are my codes for creating device:

QueueFamilyIndices indices = findQueueFamilies(m_physicalDevice);
float queuePriority = 1.0f;
VkDeviceQueueCreateInfo queueCreateInfo = {};
queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queueCreateInfo.queueFamilyIndex = indices.graphicsFamily.value();
queueCreateInfo.queueCount = 1;
queueCreateInfo.pQueuePriorities = &queuePriority;

VkPhysicalDeviceFeatures deviceFeatures = {};

VkDeviceCreateInfo createInfo = {};
createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
createInfo.pQueueCreateInfos = &queueCreateInfo; 
createInfo.queueCreateInfoCount = 1; 
createInfo.pEnabledFeatures = &deviceFeatures;
createInfo.enabledExtensionCount = 0;
if (vkCreateDevice(m_physicalDevice, &createInfo, nullptr, &m_device) != VK_SUCCESS)
{
	throw std::runtime_error("failed to create logical device!");
}

[krOoze]

Same as https://www.reddit.com/r/vulkan/comments/fjreue/creating_a_device_does_a_lot_more_when_using_c/

Those calls possibly belong to some obsolete implicit layer you have installed.

[shaofent]

After reading certain documents and references, I finally figured it out!
These API calls come from one implicit layer on my system, which is VK_LAYER_bandicam_helper.
When I run my program after checking out the layer json file and setting its ‘disable_environment’ variable to 1, everything is all right.
Thanks for all your suggestions.