Selecting a different PhysicalDevice in Vulkan

ViviChrist

I wish to select a different physical device at start up as I am in the situation of having both an integrated GPU and discrete GPU (a.k.a optimus) and I'm using optimus-manager in order to do Vulkan development. I need to select the discrete GPU.

qt.vulkan: 6 physical devices
qt.vulkan: Physical device [0]: name 'Intel(R) Haswell Mobile' version 19.0.2
qt.vulkan: Physical device [1]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Physical device [2]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Physical device [3]: name 'Intel(R) Haswell Mobile' version 19.0.2
qt.vulkan: Physical device [4]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Physical device [5]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Using physical device [0]

like this:

deviceProperties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU

ViviChrist

Because this kind of thing happens:

11:20:11: Starting /...../build-examples-Desktop-Debug/vulkan/hellovulkancubes/hellovulkancubes...
INTEL-MESA: warning: Haswell Vulkan support is incomplete
INTEL-MESA: warning: Haswell Vulkan support is incomplete
qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 531, resource id: 106954769, major code: 149 (Unknown), minor code: 4
qt.qpa.xcb: QXcbConnection: XCB error: 9 (BadDrawable), sequence: 533, resource id: 106954771, major code: 149 (Unknown), minor code: 4
vkDebug: anv: 0: ../mesa-19.0.2/src/intel/vulkan/anv_device.c:2159: GPU hung on one of our command buffers (VK_ERROR_DEVICE_LOST)
QVulkanWindow: Device lost
INTEL-MESA: error: ../mesa-19.0.2/src/intel/vulkan/anv_device.c:2159: GPU hung on one of our command buffers (VK_ERROR_DEVICE_LOST)

ViviChrist

I notice that there is a:

m_window->setPhysicalDeviceIndex()

method but is that the right way to do it? also when or at which stage should this function be called to make that pysical device selected?

ViviChrist

Althought this is what happens when I change the index to 1, 2, 4, or 5:

INTEL-MESA: warning: Haswell Vulkan support is incomplete
INTEL-MESA: warning: Haswell Vulkan support is incomplete
qt.vulkan: Vulkan init (libvulkan.so)
qt.vulkan: Supported Vulkan instance layers: QVector(QVulkanLayer("VK_LAYER_RENDERDOC_Capture" 2 1.1.73 "Debugging capture layer for RenderDoc"), QVulkanLayer("VK_LAYER_PRIMUS_PrimusVK" 1 1.1.0 "Primus-vk - https://github.com/felixdoerre/primus_vk"), QVulkanLayer("VK_LAYER_RENDERDOC_Capture" 2 1.1.73 "Debugging capture layer for RenderDoc"), QVulkanLayer("VK_LAYER_PRIMUS_PrimusVK" 1 1.1.0 "Primus-vk - https://github.com/felixdoerre/primus_vk"), QVulkanLayer("VK_LAYER_VALVE_steam_overlay_32" 1 1.1.73 "Steam Overlay Layer"), QVulkanLayer("VK_LAYER_VALVE_steam_overlay_64" 1 1.1.73 "Steam Overlay Layer"), QVulkanLayer("VK_LAYER_LUNARG_monitor" 1 1.1.97 "Execution Monitoring Layer"), QVulkanLayer("VK_LAYER_LUNARG_screenshot" 1 1.1.97 "LunarG image capture layer"), QVulkanLayer("VK_LAYER_LUNARG_api_dump" 2 1.1.97 "LunarG debug layer"), QVulkanLayer("VK_LAYER_LUNARG_device_simulation" 1 1.1.97 "LunarG device simulation layer"), QVulkanLayer("VK_LAYER_LUNARG_vktrace" 1 1.1.97 "Vktrace tracing library"), QVulkanLayer("VK_LAYER_GOOGLE_threading" 1 1.1.100 "Google Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_object_tracker" 1 1.1.100 "LunarG Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_parameter_validation" 1 1.1.100 "LunarG Validation Layer"), QVulkanLayer("VK_LAYER_GOOGLE_unique_objects" 1 1.1.100 "Google Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_standard_validation" 1 1.1.100 "LunarG Standard Validation"), QVulkanLayer("VK_LAYER_LUNARG_core_validation" 1 1.1.100 "LunarG Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_monitor" 1 1.1.97 "Execution Monitoring Layer"), QVulkanLayer("VK_LAYER_LUNARG_screenshot" 1 1.1.97 "LunarG image capture layer"), QVulkanLayer("VK_LAYER_LUNARG_api_dump" 2 1.1.97 "LunarG debug layer"), QVulkanLayer("VK_LAYER_LUNARG_device_simulation" 1 1.1.97 "LunarG device simulation layer"), QVulkanLayer("VK_LAYER_LUNARG_vktrace" 1 1.1.97 "Vktrace tracing library"), QVulkanLayer("VK_LAYER_GOOGLE_threading" 1 1.1.100 "Google Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_object_tracker" 1 1.1.100 "LunarG Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_parameter_validation" 1 1.1.100 "LunarG Validation Layer"), QVulkanLayer("VK_LAYER_GOOGLE_unique_objects" 1 1.1.100 "Google Validation Layer"), QVulkanLayer("VK_LAYER_LUNARG_standard_validation" 1 1.1.100 "LunarG Standard Validation"), QVulkanLayer("VK_LAYER_LUNARG_core_validation" 1 1.1.100 "LunarG Validation Layer"))
qt.vulkan: Supported Vulkan instance extensions: QVector(QVulkanExtension("VK_KHR_device_group_creation" 1), QVulkanExtension("VK_KHR_display" 21), QVulkanExtension("VK_KHR_external_fence_capabilities" 1), QVulkanExtension("VK_KHR_external_memory_capabilities" 1), QVulkanExtension("VK_KHR_external_semaphore_capabilities" 1), QVulkanExtension("VK_KHR_get_display_properties2" 1), QVulkanExtension("VK_KHR_get_physical_device_properties2" 1), QVulkanExtension("VK_KHR_get_surface_capabilities2" 1), QVulkanExtension("VK_KHR_surface" 25), QVulkanExtension("VK_KHR_xcb_surface" 6), QVulkanExtension("VK_KHR_xlib_surface" 6), QVulkanExtension("VK_EXT_acquire_xlib_display" 1), QVulkanExtension("VK_EXT_debug_report" 9), QVulkanExtension("VK_EXT_debug_utils" 1), QVulkanExtension("VK_EXT_direct_mode_display" 1), QVulkanExtension("VK_EXT_display_surface_counter" 1), QVulkanExtension("VK_KHR_wayland_surface" 6))
qt.vulkan: Enabling Vulkan instance layers: ("VK_LAYER_LUNARG_standard_validation")
qt.vulkan: Enabling Vulkan instance extensions: ("VK_EXT_debug_report", "VK_KHR_surface", "VK_KHR_xcb_surface")
qt.vulkan: QVulkanWindow init
qt.vulkan: 6 physical devices
qt.vulkan: Physical device [0]: name 'Intel(R) Haswell Mobile' version 19.0.2
qt.vulkan: Physical device [1]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Physical device [2]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Physical device [3]: name 'Intel(R) Haswell Mobile' version 19.0.2
qt.vulkan: Physical device [4]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Physical device [5]: name 'GeForce 840M' version 418.224.0
qt.vulkan: Using physical device [1]
qt.vulkan: queue family 0: flags=0xf count=16 supportsPresent=1
qt.vulkan: queue family 1: flags=0x4 count=1 supportsPresent=0
qt.vulkan: Using queue families: graphics = 0 present = 0
qt.vulkan: Supported device extensions: QVector(QVulkanExtension("VK_KHR_8bit_storage" 1), QVulkanExtension("VK_KHR_16bit_storage" 1), QVulkanExtension("VK_KHR_bind_memory2" 1), QVulkanExtension("VK_KHR_create_renderpass2" 1), QVulkanExtension("VK_KHR_dedicated_allocation" 3), QVulkanExtension("VK_KHR_depth_stencil_resolve" 1), QVulkanExtension("VK_KHR_descriptor_update_template" 1), QVulkanExtension("VK_KHR_device_group" 3), QVulkanExtension("VK_KHR_draw_indirect_count" 1), QVulkanExtension("VK_KHR_driver_properties" 1), QVulkanExtension("VK_KHR_external_fence" 1), QVulkanExtension("VK_KHR_external_fence_fd" 1), QVulkanExtension("VK_KHR_external_memory" 1), QVulkanExtension("VK_KHR_external_memory_fd" 1), QVulkanExtension("VK_KHR_external_semaphore" 1), QVulkanExtension("VK_KHR_external_semaphore_fd" 1), QVulkanExtension("VK_KHR_get_memory_requirements2" 1), QVulkanExtension("VK_KHR_image_format_list" 1), QVulkanExtension("VK_KHR_maintenance1" 2), QVulkanExtension("VK_KHR_maintenance2" 1), QVulkanExtension("VK_KHR_maintenance3" 1), QVulkanExtension("VK_KHR_multiview" 1), QVulkanExtension("VK_KHR_push_descriptor" 2), QVulkanExtension("VK_KHR_relaxed_block_layout" 1), QVulkanExtension("VK_KHR_sampler_mirror_clamp_to_edge" 1), QVulkanExtension("VK_KHR_sampler_ycbcr_conversion" 1), QVulkanExtension("VK_KHR_shader_atomic_int64" 1), QVulkanExtension("VK_KHR_shader_draw_parameters" 1), QVulkanExtension("VK_KHR_shader_float16_int8" 1), QVulkanExtension("VK_KHR_shader_float_controls" 1), QVulkanExtension("VK_KHR_storage_buffer_storage_class" 1), QVulkanExtension("VK_KHR_swapchain" 70), QVulkanExtension("VK_KHR_swapchain_mutable_format" 1), QVulkanExtension("VK_KHR_variable_pointers" 1), QVulkanExtension("VK_KHR_vulkan_memory_model" 2), QVulkanExtension("VK_EXT_blend_operation_advanced" 2), QVulkanExtension("VK_EXT_conditional_rendering" 1), QVulkanExtension("VK_EXT_depth_range_unrestricted" 1), QVulkanExtension("VK_EXT_descriptor_indexing" 2), QVulkanExtension("VK_EXT_discard_rectangles" 1), QVulkanExtension("VK_EXT_display_control" 1), QVulkanExtension("VK_EXT_global_priority" 2), QVulkanExtension("VK_EXT_inline_uniform_block" 1), QVulkanExtension("VK_EXT_scalar_block_layout" 1), QVulkanExtension("VK_EXT_shader_subgroup_ballot" 1), QVulkanExtension("VK_EXT_shader_subgroup_vote" 1), QVulkanExtension("VK_EXT_transform_feedback" 1), QVulkanExtension("VK_EXT_vertex_attribute_divisor" 3), QVulkanExtension("VK_NV_dedicated_allocation" 1), QVulkanExtension("VK_NV_device_diagnostic_checkpoints" 2), QVulkanExtension("VK_NV_shader_subgroup_partitioned" 1), QVulkanExtension("VK_NVX_device_generated_commands" 3), QVulkanExtension("VK_NVX_multiview_per_view_attributes" 1))
qt.vulkan: Enabling device extensions: QVector(VK_KHR_swapchain)
qt.vulkan: memtype 0: flags=0x0
ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=2 pid=5573 comm="hellovulkanwind" exe="/...../examples/vulkan/build-hellovulkanwindow-Desktop-Debug/hellovulkanwindow" sig=11 res=1
qt.vulkan: memtype 1: flags=0x0
qt.vulkan: memtype 2: flags=0x0
qt.vulkan: memtype 3: flags=0x0
qt.vulkan: memtype 4: flags=0x0
qt.vulkan: memtype 5: flags=0x0
qt.vulkan: memtype 6: flags=0x0
qt.vulkan: memtype 7: flags=0x1
qt.vulkan: memtype 8: flags=0x1
qt.vulkan: memtype 9: flags=0x6
qt.vulkan: memtype 10: flags=0xe
qt.vulkan: Picked memtype 10 for host visible memory
qt.vulkan: Picked memtype 7 for device local memory
23:15:22: The program has unexpectedly finished.
23:15:22: The process was ended forcefully.

with the following code in the hellowvulkanwindow project:

VulkanRenderer::VulkanRenderer(QVulkanWindow *w)
    : m_window(w)
{
    m_window->setPhysicalDeviceIndex(1);
}

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Unsolved Selecting a different PhysicalDevice in Vulkan