Issues with Vulkan on Linux dev build

[jorwin]

Hello to all!

I haven't found anything here relating to the problems I'm experiencing with Linux Builds.

I have the NVidia 375.10 driver installed and when I start

Code:

vulkaninfo | grep surface

on a terminal console I get the following:

Code:

VK_KHR_surface                  : extension revision 25
VK_KHR_xcb_surface              : extension revision  6

In newer Dolphin builds I can choose the Vulkan driver (experimental) but when I start a game I get a dialog window with the error 'Failed to create Vulkan instance', when I close the dialog I get another one with 'Fifo shutting down while active', when I close this one I get a new dialog claiming 'Failed to initialize video backend!'. If I change to OpenGL Dolphin refuses to start any game. I have to close Dolphin and restart it to boot a game.

On the console following message appears:

Code:

VideoBackends/Vulkan/VulkanContext.cpp:167 E[Video]: Vulkan: Missing required extension VK_KHR_xlib_surface.

. Which is true, since

Code:

vulkaninfo

shows no such surface extension.

This behaviour is the same on following git pulls:
Vanilla Dolphin: 017ab71fcff8874a23e175b603511814a38ad432
Ishiikura Dolphin: 0c629093d23298a5247b420f7c94e9aa63c43f19

But on the 'vulkan-pr' commit 'b9edfce035648f51676b0a68efaf43071fc06453' I'm able to compile and start Dolphin with the Vulkan backend and start games, on the very same configuration.

I start Dolphin from the

Code:

/home

directory on all three versions, installing it on the

Code:

/usr

directory doesn't help with the issue.

In the directory 'dolphin/Source/VideoBackends/Vulkan' there is an file named

Code:

VulkanLoader.h

, if I comment out

Code:

#define VK_USE_PLATFORM_XLIB_KHR

on line 14 and uncomment

Code:

#define VK_USE_PLATFORM_XCB_KHR

on line 15 it fails on the linking claiming that there's no link to

Code:

XGetXCBConnection

, so no luck there... This is with the Vanilla Dolphin

Code:

017ab71fcff8874a23e175b603511814a38ad432

pull.

As stated before 'vulkan-pr' from

Code:

Stenzek <stenzek@gmail.com>

, pull

Code:

b9edfce035648f51676b0a68efaf43071fc06453

, on the

Code:

Sun Aug 14 00:40:04 2016 +1000

, with the comment

Code:

Vulkan: Support frame dumping/screenshots

, it starts with the Vulkan driver and you can boot games without errors.

Copying the Vulkan files from 'vulkan-pr' to the vanilla Dolphin didn't help either since there are undefined variables.

Has anyone an idea on what's wrong?

Thank you in advance and for your time!