[Libre-soc-dev] [Mesa-dev] Loading Vulkan Driver

[vivek pandya]

 Thanks Jason for your time to reply. I understand the error but I am not
much familiar with entry points generation code. Currently I just make it
compile (I just want to develop a broken pipeline quickly that just returns
from the entry point) .
I will study the code. Is there any document to read about that? I want to
understand how loaders and icd interact.

On Thu, Aug 20, 2020 at 9:46 PM Jason Ekstrand <jason at jlekstrand.net> wrote:

> The error says pretty clearly what went wrong.  The loader looked for
> the `vk_icdGetInstanceProcAddr` symbol and couldn't find it in your
> so.  You need at least the basic Get*ProcAddr symbols or else the
> loader can't do anything.  You'll also need device and instance
> creation functions and possibly some of the queries before anything
> will work.
>
> On Thu, Aug 20, 2020 at 10:43 AM vivek pandya <vivekvpandya at gmail.com>
> wrote:
> >
> > Hello,
> >
> > I have started building mesa Vulkan driver.
> > I have started by copying amd/vulkan driver however I have just kept
> only one file in build
> > libresoc_pipeline.c
> > I have only one method
> >
> > VkResult libresoc_CreateGraphicsPipelines(
> >         VkDevice                                    _device,
> >         VkPipelineCache                             pipelineCache,
> >         uint32_t                                    count,
> >         const VkGraphicsPipelineCreateInfo*         pCreateInfos,
> >         const VkAllocationCallbacks*                pAllocator,
> >         VkPipeline*                                 pPipelines)
> > {
> >         return VK_ERROR_UNKNOWN;
> > }
> >
> > with few edits/commenting out code into files I am able to build
> libvulkan_libresoc.so
> >  but when I forced loaded driver with VK_ICD_FILENAMES I am getting
> following error:
> > however I was expecting to hit VK_ERROR_UNKNOWN. Anyone have any ideas?
> Am I missing any file in the build setting?
> >
> > vivek at vivek-VirtualBox:~/install/share/vulkan/icd.d$ vulkaninfo
> > ERROR: [Loader Message] Code 0 : loader_scanned_icd_add: Attempt to
> retrieve either 'vkGetInstanceProcAddr' or 'vk_icdGetInstanceProcAddr' from
> ICD /home/vivek/install/lib/x86_64-linux-gnu/libvulkan_libresoc.so failed.
> > Cannot create Vulkan instance.
> > This problem is often caused by a faulty installation of the Vulkan
> driver or attempting to use a GPU that does not support Vulkan.
> >
> /build/vulkan-tools-KEbD_A/vulkan-tools-1.2.131.1+dfsg1/vulkaninfo/vulkaninfo.h:371:
> failed with ERROR_INCOMPATIBLE_DRIVER
> >
> > Thanks,
> > Vivek
> > _______________________________________________
> > mesa-dev mailing list
> > mesa-dev at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>