CODEWITHSUNDEEP
c#.netimagegdi+
techno
techno

Reputation: 6500

Speeding up GDI+ when Handling Large Images in c#

Im using GDI+ to render images in c#.The method works fine when Medium quality images are used.But when i use High quality images with large sizes ranging from 1.5-5mb the processing seems to be much slower.I mainly use 

Graphics.DrawImage

Is there any way to speed up this.Can i reduce the size of the images on the fly by compressing it in memory,Will this take more time.Any ideas

Upvotes: 0

Views: 1437

Answers (2)

Marcel N.
Marcel N.

Reputation: 13976

There seems to have been a similar question: How to increase performance over GDI's DrawImage(Unscaled)?

That guy ended up writing his own library on top of OpenTK to really speed up things.

Upvotes: 0

Mark Sowul
Mark Sowul

Reputation: 10600

If not scaling the image, DrawImageUnscaled will help. Consider setting to premultiplied RGBA as well. Split the image into smaller chunks.

See here: http://www.gamedev.net/topic/467752-maximizing-gdi-speed/

Upvotes: 2

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