Vulkan Error on Android with Adreno GPUs - Unable to load vkCreateRayTracingPipelinesKHR pointer

[naomirehman1008]

On some android devices running any amber test with the plain executable over adb results in the following error:

Vulkan: Unable to load vkCreateRayTracingPipelinesKHR pointer

Example output for the copy_data_buffer.amber test, run with adb:

Summary of Failures: 
/data/local/tmp/copy_data_buffer.amber 

Summary: 0 pass, 1 fail 
/data/local/tmp/copy_data_buffer.amber: Vulkan: Unable to load vkCreateRayTracingPipelinesKHR pointer

I've had this issue with three androids with Adreno GPUs (a Samsung s22 with Android 14, OnePlus 7T with OxygenOS 12, and OnePlus 11 with OxygenOS 15), but the executable/test works fine on Pixels 7a and 9 with Mali GPUs on Android 15. I don't think a ray tracing pipeline would be necessary for tests like copy_data_buffer.amber that don’t involve ray tracing, is there a way to prevent amber from trying to use the ray tracing pipeline when it isn’t needed?

[dj2]

It isn't that it's trying to use the raytracing pipeline, it's during trying to load all the function pointers. I believe that the update_vk_wrappers.py script needs to change. In gen_wrappers in the case where !ptr instead of emitting an error we need to just return a nullptr for any method marked optional. (Similar to what the headers code does below)

[naomirehman1008]

This worked, thank you! Would you like me to open a pull request with the update_vk_wrappers.py fix?

[dj2]

Sure, a pull request would be appreciated. Note, you'll need to sign the Google CLA before we can review the request (https://cla.developers.google.com/clas)