Unexpected validation warnings

[almarklein]

I keep getting these two validation warnings for even the simplest of shaders. The code does run (no crash or panic).

This is on Win10 with Intel Graphics (things crash if enable the NVida GPU, but that's a different issue). Using wgpu-native from master (naga 25). LunarSDK 1.2.176.1 (05-May-2021). Shaders are provided to wgpu in WGSL.

ImageMSArray capability:

VALIDATION [VUID-VkShaderModuleCreateInfo-pCode-01091 (0xa7bb8db6)] : Validation Error: [ VUID-VkShaderModuleCreateInfo-pCode-01091 ] Object 0: handle = 0x14f78a6dfe8, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0xa7bb8db6 | vkCreateShaderModule(): The SPIR-V Capability (ImageMSArray) was declared, but none of the requirements were met to use it. The Vulkan spec states: If pCode declares any of the capabilities listed in the SPIR-V Environment appendix, one of the corresponding requirements must be satisfied (https://vulkan.lunarg.com/doc/view/1.2.176.1/windows/1.2-extensions/vkspec.html#VUID-VkShaderModuleCreateInfo-pCode-01091)
object info: (type: DEVICE, hndl: 0x14f78a6dfe8)

InterpolationFunction capability:

VALIDATION [VUID-VkShaderModuleCreateInfo-pCode-01091 (0xa7bb8db6)] : Validation Error: [ VUID-VkShaderModuleCreateInfo-pCode-01091 ] Object 0: handle = 0x14f78a6dfe8, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0xa7bb8db6 | vkCreateShaderModule(): The SPIR-V Capability (InterpolationFunction) was declared, but none of the requirements were met to use it. The Vulkan spec states: If pCode declares any of the capabilities listed in the SPIR-V Environment appendix, one of the corresponding requirements must be satisfied (https://vulkan.lunarg.com/doc/view/1.2.176.1/windows/1.2-extensions/vkspec.html#VUID-VkShaderModuleCreateInfo-pCode-01091)
object info: (type: DEVICE, hndl: 0x14f78a6dfe8)

Also seeing this from time to time (poolSizeCount must be greater than 0):

VALIDATION [VUID-VkDescriptorPoolCreateInfo-poolSizeCount-arraylength (0x8e5726c)] : Validation Error: [ VUID-VkDescriptorPoolCreateInfo-poolSizeCount-arraylength ] Object 0: handle = 0x1fb7749e588, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0x8e5726c | vkCreateDescriptorPool: parameter pCreateInfo->poolSizeCount must be greater than 0. The Vulkan spec states: poolSizeCount must be greater than 0 (https://vulkan.lunarg.com/doc/view/1.2.176.1/windows/1.2-extensions/vkspec.html#VUID-VkDescriptorPoolCreateInfo-poolSizeCount-arraylength)
object info: (type: DEVICE, hndl: 0x1fb7749e588)

[kvark]

@almarklein thank you for filing! Could you record an API trace reproducing the last validation error?
I'm addressing the first two.

[almarklein]

About the PoolSizeCount warning: it appeared in an example (in wgpu-py) that is basically a port of the hello triangle. It seems related to #240. I made the warning disappear by not creating empty bind groups (and layouts). Incidentally, that example started crashing after the recent changes to wgpu-native, and the applied fix also made it work again.

It could well be that the hello triangle in wgpu-native is also broken now. I'll have a look in a moment.

[kvark]

Filed zakarumych/gpu-descriptor#14 upstream.
The rest is addressed by #1391

[almarklein]

Following up on the triangle example in wgpu-native: gfx-rs/wgpu-native#97

[zakarumych]

Patch for gpu-descriptor has been released

[almarklein]

Thanks!