[Libre-soc-dev] Loading Vulkan Driver

[vivek pandya]

Finally with help vulkan-loader code I am able to fix the problem with my
driver code.

The issue was that as of Vulkan API version 1.0.0 there are certain
functions like
CreateDevice(), DestroyDevice(), CreateInstance() etc.. are required to be
exported by ICD .so file. I was missing a few of them.
Now with that fixed I believe the initial skeleton is in good shape.

Now it fails after
 77 VkResult
 78 libresoc_EnumeratePhysicalDevices(VkInstance _instance,
 79                               uint32_t *pPhysicalDeviceCount,
 80                               VkPhysicalDevice *pPhysicalDevices)
 81 {
 82         if (getenv("LIBRESOC_TRACE")) {
 83                 fprintf(stderr, "EnumeratePhysicalDevices called\n");
 84         }
 85    /* FIXME: stub */
 86    return VK_SUCCESS;
 87 }

I think it is logical as it is not returning any actual physical device
through pointer.



On Tue, Aug 25, 2020 at 6:15 PM vivek pandya <vivekvpandya at gmail.com> wrote:

>
>
> On Tue, Aug 25, 2020 at 2:57 AM Luke Kenneth Casson Leighton <
> lkcl at lkcl.net> wrote:
>
>>
>>
>> On Monday, August 24, 2020, Jacob Lifshay <programmerjake at gmail.com>
>> wrote:
>>
>>> On Mon, Aug 24, 2020, 02:58 vivek pandya <vivekvpandya at gmail.com> wrote:
>>>
>>> >
>>> >
>>> > On Mon, Aug 24, 2020 at 3:26 PM apinheiro <apinheiro at igalia.com>
>>> wrote:
>>> >
>>> >> After that, our objective was trying to get a really basic Vulkan
>>> tests
>>> >> working. As mentioned, we started with a real basic test that just
>>> did a
>>> >> clear, as in that way, we didn't need to bother with the compiler
>>> yet. We
>>> >> didn't save that test though. In any case, it was really simple, so it
>>> >> should be easy to recreate.
>>> >>
>>> > Okay I will write a very simple test.
>>> >
>>>
>>> If your looking for a simple test that just repeatedly clears the screen
>>> to
>>> different colors and displays it, check out the /test/testvulkan.c test
>>> in
>>> libSDL that I originally wrote. It doesn't use any shaders.
>>>
>>> https://www.libsdl.org/download-2.0.php
>>
>>
>> vivek i have asked cole to create a wiki page to track things like this,
>> also a tutorial how to build the code.
>>
>> https://libre-soc.org/3d_gpu/mesa/?updated
>>
>> then more people can follow what you are doing, easily set up the build
>> environment and help comment.
>>
> Sure I will add details about how to build the code, I use basically meson
> and ninja commands,
> My build directory located in mesa source here is my meson command to
> configure (I know this does more work than require please add more options
> if you find useful):
> meson -Dbuildtype=debug -Dprefix=/home/vivek/install
> -Dvulkan-drivers=libresoc ..
>
> and then
>
> ninja
>
> ninja install.
>
> I also have script to set few environment variables like
>
> export
> VK_ICD_FILENAMES=/home/vivek/install/share/vulkan/icd.d/libresoc_icd.x86_64.json
> export VK_LOADER_DEBUG=warn
> export LIBRESOC_TRACE=1
>
> I am doing some experiments with extension and entrypoint generation code,
> so those files will change.
> I would request not to waste time on current code I have pushed.
>
> To test the code I am sing simple tests built by
> https://github.com/GameTechDev/IntroductionToVulkan
>
> I am also using debug build for vulkan loader if any one interested in
> that please look at
> https://github.com/KhronosGroup/Vulkan-Loader/blob/master/BUILD.md
>
> Thanks,
> Vivek
>
>>
>> l.
>>
>>
>>
>> --
>> ---
>> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
>>
>>