Rendering Artifacts in the VSG Builder Example

[SherSpidey]

I am new to VSG. While going through some examples, I noticed that the VSG builder example may produce rendering artifacts (mostly around the edges) when rendering a simple box at a particular angle on my PC. However, it works just fine on my laptop. Both setups are the same. Did I do something wrong?

PC: 14900K + 4070TS
Laptop: 14650H + 4060

[robertosfield]

That's quite bizarre, first time I've seen an artifact like that.

The VSG should be sending the same data to each of the drivers/hardware, so it's likely a bug in the driver or what the desktop compositor is doing that is messing things up.

Have a look at your drivers and desktop settings to see if this helps.

[SherSpidey]

Thanks a lot for your reply. When I increase the sample count (VK_SAMPLE_COUNT_1BIT by default) from 2 to 8(almost perfect), the artifacts gradually disappear, though they still occur at certain angles. I also noticed that in wireframe mode, the box renders perfectly even with VK_SAMPLE_COUNT_1BIT.

[robertosfield]

The fact that the sample count affects the artifact suggests it's something happening with the driver/hardware side rather than the VSG.

How are you setting the sampler count? The vsgbuilder example doesn't have an option for it. Is this your own example?

To test the sampling on my Kubuntu 24.04 + Geforce 1650 system I've run vsgbuilder outputting a test.vsgt model then loading it into vsgviewer with has the --samples command line option for controlling the sample count:

vsgbuilder -o test.vsgt
vsgviewer test.vsgt --samples 2

I don't see any issues with a sample count of 2, edges look as expected.

[SherSpidey]

I just add a new line to set the WindowTraits.

[SherSpidey]

Yes! I updated to the latest NVIDIA driver, and now my laptop shows the same artifact. It’s definitely an issue with the latest driver! gn~

[robertosfield]

Updating the driver and then things breaking does suggest there is a problem with driver. Can you revert to an older driver?

[SherSpidey]

Yes, it seems that the new NVIDIA driver (470+) for the 50 series has some issues with Vulkan. Reverting to driver 460+ (or possibly even lower) should solve the problem. I reverted to driver 466 but still encountered some validation layer errors shown below, though the artifact issue was indeed resolved. So, I’m marking the question as solved and appreciate your kind reply.

[AnyOldName3]

It'd be easier to diagnose if the screenshots weren't scaled down. You should be able to upload images to GitHub without any scaling.

A couple of things I'd suggest would be enabling validation layers and running the example through RenderDoc. If there's been a regression caused by any changes made recently, they might be able to identify the problem.

[SherSpidey]

Thanks, I'll try that!

[SherSpidey]

Something like these:

VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0xa43473000000002d, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0xa43473000000002d, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0x4b7df1000000002f, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0x4b7df1000000002f, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0x2e2cd000000002b, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0x2e2cd000000002b, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0xea7170000000031, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0xea7170000000031, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0x4b7df1000000002f, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0x4b7df1000000002f, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0xa43473000000002d, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0xa43473000000002d, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0xea7170000000031, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0xea7170000000031, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0x2e2cd000000002b, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0x2e2cd000000002b, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0xa43473000000002d, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0xa43473000000002d, type: 5, name: NULL
VUID-vkAcquireNextImageKHR-semaphore-01779(ERROR / SPEC): msgNum: 1461184347 - Validation Error: [ VUID-vkAcquireNextImageKHR-semaphore-01779 ] Object 0: handle = 0x4b7df1000000002f, type = VK_OBJECT_TYPE_SEMAPHORE; | MessageID = 0x5717e75b | vkAcquireNextImageKHR(): Semaphore must not have any pending operations.
The Vulkan spec states: If semaphore is not VK_NULL_HANDLE, it must not have any uncompleted signal or wait operations pending (https://vulkan.lunarg.com/doc/view/1.4.304.1/windows/antora/spec/latest/chapters/VK_KHR_surface/wsi.html#VUID-vkAcquireNextImageKHR-semaphore-01779)
    Objects: 1
        [0] 0x4b7df1000000002f, type: 5, name: NULL