Error when calling `vkCmdSetDescriptorBufferOffsetsEXT` | Vulkan API Discord | Page 1

stark latch Jul 7, 2024, 3:58 AM

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I'm implementing bindless texturing and I'm trying to use vkCmdSetDescriptorBufferOffsetsEXT, however, when I call it I get this validation error:

Validation Error: [ VUID-vkCmdSetDescriptorBufferOffsetsEXT-firstSet-09006 ] Object 0: handle = 0x2c0c7e60140, type = VK_OBJECT_TYPE_COMMAND_BUFFER; Object 1: handle = 0x95a125000000001a, type = VK_OBJECT_TYPE_DESCRIPTOR_SET_LAYOUT; Object 2: handle = 0xcb1c7c000000001b, type = VK_OBJECT_TYPE_PIPELINE_LAYOUT; | MessageID = 0xd70666b1 | vkCmdSetDescriptorBufferOffsetsEXT(): Descriptor set layout (VkDescriptorSetLayout 0x95a125000000001a[]) for set 0 was created without VK_DESCRIPTOR_SET_LAYOUT_CREATE_DESCRIPTOR_BUFFER_BIT_EXT flag set The Vulkan spec states: The VkDescriptorSetLayout for each set from firstSet to firstSet + setCount when layout was created must have been created with the VK_DESCRIPTOR_SET_LAYOUT_CREATE_DESCRIPTOR_BUFFER_BIT_EXT bit set

but I have that bit set when I create the descriptor set layout:

VkDescriptorSetLayoutBinding set_layout_binding{
    .binding = 0,
    .descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
    .descriptorCount = nDescriptors,
    .stageFlags = VK_SHADER_STAGE_ALL,
    .pImmutableSamplers = VK_NULL_HANDLE,
};
VkDescriptorSetLayoutCreateInfo descriptor_layout_create_info{
    .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
    .flags = VK_DESCRIPTOR_SET_LAYOUT_CREATE_DESCRIPTOR_BUFFER_BIT_EXT,
    .bindingCount = 1,
    .pBindings = &set_layout_binding
}; 
        
VK_CHECK(vkCreateDescriptorSetLayout(device, &descriptor_layout_create_info, nullptr, &globalDescriptorSetLayout));

How can I resolve this issue?

elder flicker Jul 7, 2024, 4:01 AM

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Are you using the descriptor layout you think you are using?
Have you actually enabled the required extensions, or are there any other warnings before this one?

stark latch Jul 7, 2024, 4:12 AM

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elder flicker Are you using the descriptor layout you think you are using? Have you actually e...

hmm looks like i'm not. I'm creating a descriptor set layout which I use to determine the size of the descriptor buffer, but it doesn't look like that descriptor set layout is ever associated with the buffer. Is there a way I can set that flag in the descriptor buffer?

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I'm doing this to put the descriptor in the buffer:

VkDescriptorImageInfo imginfo{
    .sampler = VK_NULL_HANDLE,
    .imageView = vkImageView,
    .imageLayout = nativeFormat,
};
VkDescriptorGetInfoEXT image_descriptor_info{
    .sType = VK_STRUCTURE_TYPE_DESCRIPTOR_GET_INFO_EXT,
    .type = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
    .data = {
        .pSampledImage = &imginfo
    }
};
owningDevice->rgl_vkGetDescriptorEXT(owningDevice->device, &image_descriptor_info, owningDevice->bufferProperties.sampledImageDescriptorSize, owningDevice->GetDescriptorPointerForIndex(globalDescriptorIndex));

elder flicker Jul 7, 2024, 4:14 AM

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I'm confused what you're saying, are you binding the correct pipeline layout or not?

stark latch Jul 7, 2024, 4:17 AM

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I was binding the correct pipeline, but I didn't set the flag for the layout on the pipeline

#Error when calling `vkCmdSetDescriptorBufferOffsetsEXT`