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zerob
161 Posts |
 Posted - Oct 25 2024 : 07:58:42
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I try to speed up loading of many svg icons, without blocking the ui.
First i tried with the inbuilt svg capability, which wasn't particularry super fast, and the images don't look smooth.
Also while running the programm in the IDE, i get flooded with GDI+ initialization errors.
"Project Project1.exe raised exception class EIEException with message 'Error creating GDI+ object (#21001)'."
To see if drawing gets any faster or the pictures would look smoother, i then enabled SKIA via IDE context menu and adding the Skia unit, just to see that all images got completely black squares.
i plan to load the image into a TIEBitmap and copy it into a TBitmap inside a TBitmap array (because i later plan to draw it into a TImage quickly with less memory overhead).
ieb.LoadFromFile(fileArray[i]);
ieb.CopyToTBitmap(bmpArray[i]);
First, how can i do this with skia without ending up with black squares (or can't this be done in threads?)
Then, how can i force the native imageen svg to be drawn smooth or prevent the GDI+ errors? (i guess that GDI+ errors prevent the smooth painting) |
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xequte
38608 Posts |
Posted - Oct 25 2024 : 18:20:41
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Hi
The native SVG code is very new (only in its second version in v13.6.0) so I wouldn't expect great things from it for a while yet. It also doesn't support many SVG features.
Can you email me some SVG examples with the code to generate the lack of smoothness and GDI errors, so I can investigate here.
The other methods for rendering SVG in ImageEn, Skia and ImageMagick should both be thread -safe. Can you email me a small demo that reproduces the issue.
Nigel
Xequte Software
www.imageen.com
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SVG Threaded loading
