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Up and Coming
July 8, 2015

Is timewarp working correctly in 4.8?

I just tried testing timewarp in both the 4.8 binary release from EPic along with Oculus's 4.7-06 branch and im not see'ing
what i expect to see.

In previous releases you could test timewarp by setting 'showflag.rendering' to 0.
Like so,




But with 4.8/ 4.7.6-06 I only get a black screen.

Additionally the tw latency within hmd stats is very high on 4.8/4.7-06 compared to the video.
16 odd ms compared to 4ms.

    This topic has been closed for replies.

    17 replies

    Up and Coming
    July 9, 2015
    "artyom17" wrote:
    As to 4.8.2 - complain to Epic, they have their own policies and we can't force them to take all the fixes.


    I did, I do and I will do. ;)

    Holding back working bug fixes for more than a month is just not acceptable. Often I am getting crazy about something for hours just to discover that this bug was internally fixed many weeks ago but wasn't published.
    Up and Coming
    July 10, 2015
    "spyro" wrote:
    "artyom17" wrote:
    As to 4.8.2 - complain to Epic, they have their own policies and we can't force them to take all the fixes.


    I did, I do and I will do. ;)

    Holding back working bug fixes for more than a month is just not acceptable. Often I am getting crazy about something for hours just to discover that this bug was internally fixed many weeks ago but wasn't published.


    This is why you should build your own version using our github branch :)
    New Participant
    July 20, 2015
    "artyom17" wrote:
    The latency is a known bug in 0.6.0.1 Runtime. You should either to switch back to 0.6.0.0 or try the following trick, enter the following console command: 'hmd qahead on'. This should reduce the latency (but still not to the 0.6.0.0 level). This bug will be fixed in the next version of Runtime.


    How about throughput? I would like to use the one that gives me the most headroom on frames-per-second/throughput: is that 0.6.0.0, which doesn't have queue-ahead but doesn't have this known bug (what is the known bug? Is there a thread on it elsewhere in the forum?), or am I better off with 0.6.0.1 with queue ahead turned on from the console? Would 0.6.0.1 give me a higher FPS in spite of the latency bug?
    Up and Coming
    July 20, 2015
    "muchcharles" wrote:
    "artyom17" wrote:
    The latency is a known bug in 0.6.0.1 Runtime. You should either to switch back to 0.6.0.0 or try the following trick, enter the following console command: 'hmd qahead on'. This should reduce the latency (but still not to the 0.6.0.0 level). This bug will be fixed in the next version of Runtime.


    How about throughput? I would like to use the one that gives me the most headroom on frames-per-second/throughput: is that 0.6.0.0, which doesn't have queue-ahead but doesn't have this known bug (what is the known bug? Is there a thread on it elsewhere in the forum?), or am I better off with 0.6.0.1 with queue ahead turned on from the console? Would 0.6.0.1 give me a higher FPS in spite of the latency bug?


    Yes, 0.6.0.1 with Queue Ahead should give you better results.
    Participant
    August 10, 2015
    How do I enable Timewarp in UE4 ( 4.8.3 ) ?
    "hmd timewarp on" gives 'command not recognized' ..
    Inspiring
    August 10, 2015
    Timewarp is on by default, and can't be turned off.
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    Up and Coming
    April 11, 2016
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