Slow PicassoIV on WinUAE 64 Bits

Leandro Jardim · 29 September 2017, 04:04

The WinUAE 64 bits PicassoIV is slower than the 32 bits one, when I emulate AmigaOS 4 with a PicassoIV card at 1024x768 on a 1080p HD-TV. On 32 bits I get full 60fps while on 64 bits I get roughly 53 fps with Workbench file management operations. If I change the fullscreen resolution to 1366x768 on the 64 bits version, the speed gets back to a common factor. I am only thinking that it's strange the difference of speed between the two, so I started posting this.

My specs are an old Intel Core i3 notebook with Intel HD Graphics 4400 chipset, and with Windows 10 Creator's Update installed.

Besides that, I can see that sometimes the bilinear filtering option for RTG graphics don't blur the video image. For seeing this I need to set the fullscreen resolution as Native and disable the bilinear filtering option for Native graphics, and enabling it for RTG graphics. "Scaled" TV resolutions seems to work fine, for some reason.

Toni Wilen · 30 September 2017, 10:47

Sorry but this is OS4 and nothing serious (and probably QEMU related anyway): not interested. You need to duplicate it under OS3.

Leandro Jardim · 30 September 2017, 21:02

Ok Toni, I understand your decision. Anyway, I hope you comes with a fix for the bilinear filter bug that I related too.

Thanks,
Leandro.

29 September 2017, 04:04	#1
Leandro Jardim Registered User Join Date: Nov 2009 Location: Legoland Age: 45 Posts: 1,461	Slow PicassoIV on WinUAE 64 Bits The WinUAE 64 bits PicassoIV is slower than the 32 bits one, when I emulate AmigaOS 4 with a PicassoIV card at 1024x768 on a 1080p HD-TV. On 32 bits I get full 60fps while on 64 bits I get roughly 53 fps with Workbench file management operations. If I change the fullscreen resolution to 1366x768 on the 64 bits version, the speed gets back to a common factor. I am only thinking that it's strange the difference of speed between the two, so I started posting this. My specs are an old Intel Core i3 notebook with Intel HD Graphics 4400 chipset, and with Windows 10 Creator's Update installed. Besides that, I can see that sometimes the bilinear filtering option for RTG graphics don't blur the video image. For seeing this I need to set the fullscreen resolution as Native and disable the bilinear filtering option for Native graphics, and enabling it for RTG graphics. "Scaled" TV resolutions seems to work fine, for some reason. Last edited by Leandro Jardim; 27 March 2019 at 13:37.

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30 September 2017, 10:47	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,531	Sorry but this is OS4 and nothing serious (and probably QEMU related anyway): not interested. You need to duplicate it under OS3.

30 September 2017, 21:02	#3
Leandro Jardim Registered User Join Date: Nov 2009 Location: Legoland Age: 45 Posts: 1,461	Ok Toni, I understand your decision. Anyway, I hope you comes with a fix for the bilinear filter bug that I related too. Thanks, Leandro.

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