Dramatic slowdown while resizing images by script

Kay C Lan lan.kc.macmail at gmail.com
Tue Apr 8 20:53:35 EDT 2014


Is this in relation to a Mac with Retina display.

If so see the List post "LiveCode 6.6 very slow on Retina MacBookPro"

The Rev blog entry:

http://livecode.com/blog/2014/03/18/hi-speed-hidpi/

and Neil Roger's workaround to use QuickRes to manually set your screen
resolution:

http://techsupport.on-rev.com/QuickRes.app.zip

Works like a charm.


On Wed, Apr 9, 2014 at 7:50 AM, Alejandro Tejada <capellan2000 at gmail.com>wrote:

> Hi All,
>
> Please, review this new bug report:
> http://quality.runrev.com/show_bug.cgi?id=12148
> Add your comments and demonstration stacks to
> this report.
>
> Created attachment 4113 [details]
> Infinite Zoom 2014.livecode
> (Stack with images that zoom in or zoom out on mousedown)
>
> 1. Download the zipped sample stack
>
> 2. Open the stack in LiveCode 6.6
>
> 3. The stack opens in full screen. Using the keys alt-tab bring to front
> the
>    LiveCode menu
>
> 4. Check the card script, before running.
>
> 5. To run the infinite zoom effect, click and hold down the mouse pointer
>    near the left side of the card (zoom in) or
>    near the right side of the card (zoom out)
>
> 6. Notice how the effect of resizing the images is slow and moves
>    step by step.
>
> 7. Notice the faint line in the border of every image, barely visible.
>    This border effectively breaks the illusion of a single continuous
>    and infinite image.
>
> 8. Follow the previous steps using LiveCode 6.5.2
>    The stack runs perfectly. There is no trace of these
>    faint lines in image borders.
>
> 9. These marked differences in image processing speed was noticed
>    by Kenji Kojima in this message:
>    http://lists.runrev.com/pipermail/use-livecode/2014-March/199672.html
>
> Have a nice day!
>
> Al
>
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