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Re: BufferPainter::Clear() optimization [message #53915 is a reply to message #53914]

Fri, 15 May 2020 11:33

mirek is currently offline

mirek
Messages: 14261
Registered: November 2005

Ultimate Member

Tom1 wrote on Fri, 15 May 2020 10:18

While interesting, I found that a plain memset() is way faster than memsetd() or Fill(). Just filling with 0xff (as the RGBA is for white) you will get a superior speed. I currently use memset() for a clear white on a ImageBuffer before giving it to BufferPainter. For more complex fill colors, I guess, the apex_memmove / memcpy code could be investigated for a more optimal result. (I posted a link to the apex code here on the forum briefly before release of 2020.1

Best regards,

Tom

With CLANG, memset performance is about the same. However, with MSVC, it really is pretty damn fast.

I have digged into the code and the key ingredient seems to be MOVNTPS instruction, which means the code could be easily adapted to setting dwords. I just need to understand MT implications mentioned here:

https://www.felixcloutier.com/x86/movntps

It also might be questionable how this will affect the performance down the road (data not being in cache and everything...)

Mirek

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[Message index]

		SSE2 and SVO optimization (Painter, memcpy....) By: Tom1 on Mon, 27 April 2020 19:19
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 28 April 2020 10:12
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 28 April 2020 10:20
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 28 April 2020 10:27
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 28 April 2020 10:33
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 28 April 2020 11:10
		Re: BufferPainter::Clear() optimization By: Oblivion on Tue, 28 April 2020 11:27
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 28 April 2020 11:17
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 15 May 2020 09:04
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 15 May 2020 10:18
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 15 May 2020 11:33
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 15 May 2020 11:41
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 15 May 2020 11:47
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 15 May 2020 12:08
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 15 May 2020 13:15
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 15 May 2020 13:36
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 15 May 2020 23:13
		Re: BufferPainter::Clear() optimization By: Didier on Fri, 15 May 2020 23:45
		Re: BufferPainter::Clear() optimization By: Tom1 on Sat, 16 May 2020 01:59
		Re: BufferPainter::Clear() optimization By: mirek on Sun, 17 May 2020 08:47
		Re: BufferPainter::Clear() optimization By: Tom1 on Sun, 17 May 2020 10:01
		Re: BufferPainter::Clear() optimization By: mirek on Sun, 17 May 2020 15:49
		Re: BufferPainter::Clear() optimization By: mirek on Sun, 17 May 2020 18:05
		Re: BufferPainter::Clear() optimization By: Tom1 on Sun, 17 May 2020 20:56
		Re: BufferPainter::Clear() optimization By: Tom1 on Sun, 17 May 2020 21:46
		Re: BufferPainter::Clear() optimization By: Tom1 on Sun, 17 May 2020 23:25
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 10:16
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 11:13
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 13:31
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 13:53
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 16:06
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 17:08
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 18:12
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 18:28
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 20:57
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 21:20
		Re: BufferPainter::Clear() optimization By: Tom1 on Mon, 18 May 2020 21:40
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 21:56
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 13:33
		Re: BufferPainter::Clear() optimization By: Tom1 on Sun, 17 May 2020 00:10
		Re: BufferPainter::Clear() optimization By: Oblivion on Fri, 15 May 2020 12:16
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 15 May 2020 12:28
		Re: BufferPainter::Clear() optimization By: Oblivion on Sun, 17 May 2020 22:00
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 18 May 2020 13:43
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 19 May 2020 00:02
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 19 May 2020 08:59
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 19 May 2020 09:14
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 19 May 2020 09:49
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 19 May 2020 12:35
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 19 May 2020 12:45
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 19 May 2020 13:18
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 19 May 2020 16:22
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 01:34
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 01:52
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 08:22
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 10:04
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 10:20
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 10:55
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 11:56
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 12:23
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 12:41
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 12:53
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 13:01
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 15:18
		Re: BufferPainter::Clear() optimization By: Tom1 on Thu, 21 May 2020 16:21
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 15:58
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 16:15
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 17:16
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 17:31
		Re: BufferPainter::Clear() optimization By: mirek on Wed, 20 May 2020 17:37
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 19:51
		Re: BufferPainter::Clear() optimization By: mirek on Thu, 21 May 2020 09:04
		Re: BufferPainter::Clear() optimization By: mirek on Thu, 21 May 2020 13:28
		Re: BufferPainter::Clear() optimization By: Tom1 on Thu, 21 May 2020 16:38
		Re: BufferPainter::Clear() optimization By: koldo on Thu, 21 May 2020 17:51
		Re: BufferPainter::Clear() optimization By: Tom1 on Thu, 21 May 2020 19:22
		Re: BufferPainter::Clear() optimization By: Tom1 on Thu, 21 May 2020 19:25
		Re: BufferPainter::Clear() optimization By: Didier on Fri, 22 May 2020 09:32
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 10:04
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 10:05
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 10:28
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 22 May 2020 11:13
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 11:39
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 22 May 2020 11:46
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 22 May 2020 11:59
		Re: BufferPainter::Clear() optimization By: koldo on Fri, 22 May 2020 12:47
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 13:01
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 22 May 2020 13:06
		Re: BufferPainter::Clear() optimization By: koldo on Fri, 22 May 2020 16:58
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 19:03
		Re: BufferPainter::Clear() optimization By: mirek on Sun, 24 May 2020 10:20
		Re: BufferPainter::Clear() optimization By: Oblivion on Sun, 24 May 2020 11:56
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 26 May 2020 13:14
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 26 May 2020 14:15
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 01 June 2020 00:39
		Re: BufferPainter::Clear() optimization By: omari on Mon, 01 June 2020 11:24
		Re: BufferPainter::Clear() optimization By: mirek on Mon, 01 June 2020 15:47
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 02 June 2020 13:59
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 02 June 2020 17:43
		Re: BufferPainter::Clear() optimization By: Tom1 on Tue, 02 June 2020 18:31
		Re: BufferPainter::Clear() optimization By: mirek on Thu, 04 June 2020 17:23
		Re: BufferPainter::Clear() optimization By: mirek on Thu, 04 June 2020 17:45
		Re: BufferPainter::Clear() optimization By: Novo on Thu, 04 June 2020 18:07
		Re: BufferPainter::Clear() optimization By: mirek on Thu, 04 June 2020 20:20
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 12 June 2020 12:23
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 12 June 2020 12:55
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 12 June 2020 16:28
		Re: BufferPainter::Clear() optimization By: Novo on Fri, 12 June 2020 18:45
		Re: BufferPainter::Clear() optimization By: mirek on Sat, 13 June 2020 10:15
		Re: BufferPainter::Clear() optimization By: coolman on Sat, 13 June 2020 10:33
		Re: BufferPainter::Clear() optimization By: Novo on Sat, 13 June 2020 13:07
		Re: BufferPainter::Clear() optimization By: coolman on Sat, 13 June 2020 14:45
		Re: BufferPainter::Clear() optimization By: Didier on Sun, 14 June 2020 12:45
		Re: BufferPainter::Clear() optimization By: mirek on Sun, 14 June 2020 14:09
		Re: BufferPainter::Clear() optimization By: Tom1 on Thu, 04 June 2020 18:48
		Re: BufferPainter::Clear() optimization By: koldo on Fri, 22 May 2020 10:29
		Re: BufferPainter::Clear() optimization By: mirek on Fri, 22 May 2020 11:32
		Re: BufferPainter::Clear() optimization By: Tom1 on Fri, 22 May 2020 11:32
		Re: BufferPainter::Clear() optimization By: Tom1 on Wed, 20 May 2020 12:52
		Re: BufferPainter::Clear() optimization By: mirek on Tue, 19 May 2020 11:32

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