Comment 14 for bug 981210

Revision history for this message
Daniel Schürmann (daschuer) wrote : Re: QPixamp Vs. QImage

Hello,

Now we have results from various Win and Linux.

Is there one who what's to run the test on Mac OS and Win7?
Than we can finally decide how to fix this bug.

Please help, thank you!

The test source can be found at https://bugs.launchpad.net/mixxx/+bug/981210.

Kind regards,

Daniel

2012/12/4 Daniel Schürmann <email address hidden>

> Hello,
>
> Please do not use the attached Project from my last Post. Max found out
> that the results are not reliable.
> I have prepared a improved version attached to
> https://bugs.launchpad.net/mixxx/+bug/981210,
>
> Thank you,
>
> Daniel
>
>
>
> 2012/12/4 Daniel Schürmann <email address hidden>
>
>> Hello,
>> when working on https://bugs.launchpad.net/mixxx/+bug/981210, It turns
>> out that at least on my hardware QPixamp is drawed slower than QImage. This
>> seems differ to that, what is stated in the Qt documentation.
>>
>> Attached you will find a test QT project which shows the issue with two
>> Mixxx logos.
>> I would be pleased if you can post your results at
>> https://bugs.launchpad.net/mixxx/+bug/981210, so we are able to decide
>> how we will fix this bug.
>>
>> My results are:
>> Qt4.8 Ubuntu Precise, nVidia 310.19, NVS 3100M:
>> QPixamp: min 38 µs mean 115 µs
>> QImage: min 22 µs mean 58 µs
>>
>> Qt4.8 WinXp in a VBox
>> QPixamp: mean 55 µs
>> QImage: mean 39 µs
>> (It seams there is a Problem with Timing measurement in the VBox because
>> the Minimum Values are about 0.)
>>
>> Thank You
>>
>> Daniel
>>
>>
>>
>