Syb Posted July 19, 2016 Share Posted July 19, 2016 (edited) Hi ! I wanted to run doom with Vulkan engine but it doesn't seems to be supported on GeForce 980M FATAL ERROR: vkCreateInstance failed with error (VK_ERROR_EXTENSION_NOT_PRESENT) Does anyone get this issue ? (last nvidia driver instaled, vulkanRT too P170EM laptop) Edited July 29, 2016 by Syb Quote Link to comment Share on other sites More sharing options...
Syb Posted July 21, 2016 Author Share Posted July 21, 2016 Anybody succeed to run DOOM with Vulkan ? Quote Link to comment Share on other sites More sharing options...
octiceps Posted July 23, 2016 Share Posted July 23, 2016 980M here also. Could be an Optimus or general mobile GPU issue. After updating to 368.81 I tried Vulkan but OGL ran over 50% faster. Then I cleared my local user temp files in Windows (there was a VulkanRT folder in there with the other junk) and now Vulkan doesn't work at all. Every time I launch Doom it CTD immediately at the first menu. Quote Link to comment Share on other sites More sharing options...
Syb Posted July 29, 2016 Author Share Posted July 29, 2016 (edited) Thanks, I will try an update another time. I hope it's just a doom issue and not a general failure... Edited July 29, 2016 by Syb Quote Link to comment Share on other sites More sharing options...
Syb Posted July 29, 2016 Author Share Posted July 29, 2016 Thanks @octiceps, I've installed the driver with a full INF tweak and installed the main VulkanRT in the main displaydriver directory. Now it works... maybe the Doom patches solved something too Quote Link to comment Share on other sites More sharing options...
octiceps Posted July 30, 2016 Share Posted July 30, 2016 (edited) Could be. A 12GB game patch was pushed out today. Changelog mentions a CTD fix for users of current Nvidia drivers. I'll try Vulkan again tomorrow. So now that Vulkan is working for you, how much faster does it run compared to OGL? Edited July 30, 2016 by octiceps Quote Link to comment Share on other sites More sharing options...
octiceps Posted July 31, 2016 Share Posted July 31, 2016 (edited) Well, after the patch Doom now works in Vulkan without CTD. But it still runs much faster (50%+) faster in OGL. What I've noticed is that in Vulkan, CPU ms/frame and thread utilization according to the in-game performance metrics is much higher than in OGL. For some reason, Vulkan uses a lot more of my CPU, not less. This is probably why performance stinks. Edited July 31, 2016 by octiceps Quote Link to comment Share on other sites More sharing options...
Syb Posted August 1, 2016 Author Share Posted August 1, 2016 On my side the fans were less noisy so the performance is better, less usage , less heat Quote Link to comment Share on other sites More sharing options...
octiceps Posted August 1, 2016 Share Posted August 1, 2016 1 hour ago, Syb said: On my side the fans were less noisy so the performance is better, less usage , less heat That makes no sense. Quote Link to comment Share on other sites More sharing options...
Syb Posted August 14, 2016 Author Share Posted August 14, 2016 Maybe Vulkan optimize the power which results of less I/O gpu/CPU for the same rendering. Less, cycles, less heat. Less heat, less fan speed. Quote Link to comment Share on other sites More sharing options...
octiceps Posted August 15, 2016 Share Posted August 15, 2016 That's way too vague. I meant an OGL vs. Vulkan FPS comparison. Quote Link to comment Share on other sites More sharing options...
octiceps Posted August 15, 2016 Share Posted August 15, 2016 Here is what I'm getting at 1080p max settings: Vulkan - 76 FPS OGL - 123 FPS (+62%) And besides the the shitty performance, Vulkan works maybe 1/20 times. Otherwise it CTD instantly after launching game. Quote Link to comment Share on other sites More sharing options...
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