[Fixed] Fails with a GTX 1080

[hlavacs]

Hallo all,
we use Slang Editor now in my graphics course. One of my students has a GTX 1080 card, and gets this error when running it:

Creating Vulkan Context
| nvvk::Context::createInstance -> 203.522 ms
Extension not available: VK_KHR_compute_shader_derivatives
Extension not available: VK_KHR_fragment_shader_barycentric
Vulkan error: VK_ERROR_INITIALIZATION_FAILED from createDevice(), C:\sbf\GitLab-Runner\builds\5gFkvLxff\0\devtechproviz\nvpro-samples\develop\vk_slang_editor\nvpro_core2\nvvk\context.cpp:76
|-> 207.369 ms
Vulkan error: VK_ERROR_INITIALIZATION_FAILED from m_ctx.init(vkSetup), C:\sbf\GitLab-Runner\builds\5gFkvLxff\0\devtechproviz\nvpro-samples\develop\vk_slang_editor\sample_gui.cpp:281
[Vulkan Loader] ERROR: vkDeviceWaitIdle: Invalid device [VUID-vkDeviceWaitIdle-device-parameter]

Maybe you could alter the code so that it does not depend on these extensions or generally works with older cards as well?
Thank you
Helmut

[NBickford-NV]

Hi Helmut! I was coincidentally working on this yesterday, since it came up in Issue #3. Hopefully I should have a new version up that makes barycentrics optional later today!

…

________________________________ From: Helmut Hlavacs ***@***.***> Sent: Thursday, March 19, 2026 7:27 AM To: nvpro-samples/vk_slang_editor ***@***.***> Cc: Subscribed ***@***.***> Subject: [nvpro-samples/vk_slang_editor] Fails with a GTX 1080 (Discussion #4) Hallo all, we use Slang Editor now in my graphics course. One of my students has a GTX 1080 card, and gets this error when running it: Creating Vulkan Context | nvvk::Context::createInstance -> 203.522 ms Extension not available: VK_KHR_compute_shader_derivatives Extension not available: VK_KHR_fragment_shader_barycentric Vulkan error: VK_ERROR_INITIALIZATION_FAILED from createDevice(), C:\sbf\GitLab-Runner\builds\5gFkvLxff\0\devtechproviz\nvpro-samples\develop\vk_slang_editor\nvpro_core2\nvvk\context.cpp:76 |-> 207.369 ms Vulkan error: VK_ERROR_INITIALIZATION_FAILED from m_ctx.init(vkSetup), C:\sbf\GitLab-Runner\builds\5gFkvLxff\0\devtechproviz\nvpro-samples\develop\vk_slang_editor\sample_gui.cpp:281 [Vulkan Loader] ERROR: vkDeviceWaitIdle: Invalid device [VUID-vkDeviceWaitIdle-device-parameter] Maybe you could alter the code so that it does not depend on these extensions or generally works with older cards as well? Thank you Helmut — Reply to this email directly, view it on GitHub<#4>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ANWOCVUV3EM4DNHDFK6BYNL4ROHMPAVCNFSM6AAAAACWXRCSDOVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZZGY4DSOJSGY>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[hlavacs]

Hey Nia, great, many thanks! We will try it in the next days!

[NBickford-NV]

Hi @hlavacs ! I've got a fix up in the latest commit, and published new binary builds as version v0.9.1; would it be possible to have your student test it out and report if it works now? Thank you!

P.S. I'm excited to hear vk_slang_editor's being used in education now, that's fantastic! I'd be really interested to see how you're using it and what people make with it. Please feel free to let me know here or at nbickford@nvidia.com if you run into any issues, or if there's anything I can do to make it work better as an educational tool. Thank you again!

[hlavacs]

Great I will inform my student right away!

[hlavacs]

Hey Nia, thanks a lot, it works now for my student.
Best regards
Helmut

[NBickford-NV]

Hooray, I'm glad to hear that!