[necktwi]

When I tried running hologram example on my iPhone 5s(iOS 10.2), Xcode keeps printing
[***MoltenVK ERROR***] VK_ERROR_FEATURE_NOT_PRESENT: vkCmdDrawIndexed(): The current device does not support drawing with a non-zero base vertex.

The kettles don’t look like they are kettles. zig-zagged edges and low frame rate.

[Bill Hollings]

@necktwi

As the error suggests, the Metal device that you are using does not support drawing with a non-zero vertex or instance base, which is used by the Hologram demo.

You require an A9X GPU (iOS_GPUFamily3_v1), or OS X/macOS (OSX_GPUFamily1_v1) to support that feature.

In your app, you can determine the availability of this feature by calling the vkGetPhysicalDeviceMetalFeaturesMVK() function as defined in vk_mvk_moltenvk.h.

…Bill

[necktwi]

I hope Molten makes me forget about Metal in near future. It is its purpose right?

[Author]

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