1bf215546Sopenharmony_ciA Vulkan layer to disable all rendering/compute commands. 2bf215546Sopenharmony_ci 3bf215546Sopenharmony_ciTo turn on the layer run : 4bf215546Sopenharmony_ci 5bf215546Sopenharmony_ciVK_INSTANCE_LAYERS=VK_LAYER_INTEL_nullhw /path/to/my_vulkan_app 6