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  1. #1
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    VerifyBitmap fails with identical bitmaps

    I have examined the resulting bitmaps of a failed VerifyBitmap and everything appears to be the same but the tool insists the bitmaps are different.

    When I zoom on the differences, the Baseline, Diffs, and Result rows in the Zoom window are identical (the Diffs row is colourless).

    The baseline bitmap was captured on a different machine than the test machine and I'm investigating that being the problem.

    Any ideas or similar experience?

    Thanks
    Mark

  2. #2
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    Re: VerifyBitmap fails with identical bitmaps

    Oops! We were a little quick to post this one.
    The monitors were set on different colour depths.
    Sorry for the distraction.
    :-0

    Mark

  3. #3
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    Re: VerifyBitmap fails with identical bitmaps

    Hi Mark,

    I was told that if you need to do VerifyBitmap, the baseline image needs to have been captured on the same machine as the test machine. This means that everymachine a test is done on needs to have its own copy of baseline images?

    Reading your post. you seem to have been able to successfully do VerifyBitmap although the baseline image was captured on a different machine from the one that the test is done on? If so, could you tell me how you have got your setup working as my testing is extremely image intensive and needs a LOT of verification.

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  4. #4
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    Re: VerifyBitmap fails with identical bitmaps

    See SilkTest Online Help on SYS_CompareBitmap () function.

    Assuming that VerifyBitmap () works the same as SYS_CompareBitmap (), then you'll get an error if the color tables used are different.


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  5. #5
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    Re: VerifyBitmap fails with identical bitmaps

    Hi

    I have tried the test of using the .rmp file as the new base line and rerunning the test again. Silk still see's a difference. I would think if you use the new baselines, you wouldn't have a problem.

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  6. #6
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    Re: VerifyBitmap fails with identical bitmaps

    Try setting Bitmap Match Count (from Options -> Agent in Bitmap Tab) to 0 (zero).

    See if that works.

    ------------------
    Who Tests The Tester...
    Who Tests The Tester...

  7. #7
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    Re: VerifyBitmap fails with identical bitmaps

    I've changed my bitmap match count from 5 (the default) to zero and I am still seeing the problem. I ran the test once, made the .rmp file the new baseline and reran the test again.

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  8. #8
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    Re: VerifyBitmap fails with identical bitmaps

    its good practice to enforce a standard monitor resolution and color depth when using silk. I have also found it helpful to enforce certain color schemes such as using windows classic on Windows 2000 will make the windows look like NT and thus cut down on BMP failures due to color differences between the OS's.

    ------------------
    Ryan McCullough
    Accelrys Inc.
    ryan@accelrys.com
    Ryan McCullough
    RightNow Tech. Inc.

 

 

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