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BufferPainter now MT optimized [message #49144]

Tue, 26 December 2017 11:52

mirek
Messages: 14291
Registered: November 2005

Ultimate Member

This one was hard... but Painter now has 'Co' method which actually works. Gains are not spectacular, with my 4/8 i7 CPU, the basic 'U++ Painter' example in PainterExamples is like 2.3 times faster in MT. In some rare cases (e.g. when there is a lot of raster data, like radial span), speedup can be >4, in some other rare cases (a lot of small polygons), MT can even be bit slower than ST.

Important: When Co is active, it is mandatory to invoke 'Finish' method to finalize painting before moving result from ImageBuffer. BufferPainter destructor does this, so either add a {} block or call Finish explicitly.

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[Message index]

		BufferPainter now MT optimized By: mirek on Tue, 26 December 2017 11:52
		Re: BufferPainter now MT optimized By: Tom1 on Fri, 29 December 2017 13:07
		Re: BufferPainter now MT optimized By: Tom1 on Fri, 29 December 2017 16:00
		Re: BufferPainter now MT optimized By: mirek on Fri, 29 December 2017 17:39
		Re: BufferPainter now MT optimized By: Tom1 on Tue, 02 January 2018 15:34
		Re: BufferPainter now MT optimized By: mirek on Tue, 02 January 2018 16:51
		Re: BufferPainter now MT optimized By: Tom1 on Wed, 03 January 2018 09:04
		Re: BufferPainter now MT optimized By: Tom1 on Sat, 06 January 2018 11:33
		Re: BufferPainter now MT optimized By: mirek on Sat, 06 January 2018 13:14
		Re: BufferPainter now MT optimized By: Tom1 on Sat, 06 January 2018 15:45
		Re: BufferPainter now MT optimized By: mirek on Sat, 06 January 2018 20:35
		Re: BufferPainter now MT optimized By: mirek on Sat, 06 January 2018 21:16
		Re: BufferPainter now MT optimized By: Tom1 on Sun, 07 January 2018 00:06
		Re: BufferPainter now MT optimized By: mirek on Sun, 07 January 2018 00:24
		Re: BufferPainter now MT optimized By: Tom1 on Mon, 08 January 2018 10:37

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