Bug 97579

Summary: Advertised VkMemoryType is inaccessible on non-LLC chipsets
Product: Mesa Reporter: Chad Versace <chadversary>
Component: Drivers/Vulkan/intelAssignee: Intel 3D Bugs Mailing List <intel-3d-bugs>
Status: RESOLVED FIXED QA Contact: Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity: normal    
Priority: medium CC: chadversary, jason, krh, nanleychery
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Chad Versace 2016-09-02 19:31:37 UTC 
On non-LLC chipsets, vkGetPhysicalDeviceMemoryProperties [1] advertises two memory types: (0) coherent, uncached and (1) incoherent, cached. But vkGetImageMemoryRequirements [2] and vkGetBufferMemoryRequirements always report that memory type 0 is required. You can never use memory type 1.

[1]: https://cgit.freedesktop.org/mesa/mesa/tree/src/intel/vulkan/anv_device.c?id=aad4f15506c2b5ff9f3304a467b51b45dd77554d#n613
[2]: https://cgit.freedesktop.org/mesa/mesa/tree/src/intel/vulkan/anv_device.c?id=aad4f15506c2b5ff9f3304a467b51b45dd77554d#n1335
Comment 1 Nanley Chery 2017-02-14 22:35:57 UTC 
Thank you for the bug report! This should be fixed with the following commit:

commit 6319bfc2a6497d708ead536b9a6d5d5a00c1f2f3
Author: Connor Abbott <cwabbott0@gmail.com>
Date:   Tue Feb 14 12:23:59 2017 -0500

    anv: fix Get*MemoryRequirements for !LLC

    Even though we supported both coherent and non-coherent memory types, we
    effectively forced apps to use the coherent types by accident. Found by
    inspection, only compile tested.

    Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
    Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
    Cc: "17.0" <mesa-stable@lists.freedesktop.org>

Please reopen this if you find that the issue is still present.

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