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Can you test this is in Win32? [message #53669]

Mon, 20 April 2020 11:56

mirek
Messages: 14255
Registered: November 2005

Ultimate Member

I have suspiction that Win32 GDI is not HW accelerated anymore. Anybody with Windows and a bit of time, can you please test this:

#include <CtrlLib/CtrlLib.h>

using namespace Upp;

GUI_APP_MAIN
{
	DDUMP(GetDeviceCaps(GetDC(NULL), SHADEBLENDCAPS) & SB_PIXEL_ALPHA);
}

(If you do, please also send info about Windows version and your GPU).

Mirek

[Updated on: Wed, 22 April 2020 10:26]

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Re: Can you test this is in Win32? [message #53672 is a reply to message #53669]

Mon, 20 April 2020 12:59

Tom1
Messages: 1301
Registered: March 2007

Ultimate Contributor

Hi,

This returns zero for me. Windows 10 professional x64, Intel core i7 integrated Intel HD 4600 graphics.

Best regards,

Tom

[Updated on: Mon, 20 April 2020 13:00]

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Re: Can you test this is in Win32? [message #53675 is a reply to message #53669]

Mon, 20 April 2020 14:43

przem_kaz
Messages: 3
Registered: April 2010
Location: Poland

Junior Member

Hi Mirek,
In my case it looks like the same as for Tom1 - I've got a zero.

GetDeviceCaps(GetDC(0), 120) & 0x00000002 = 0
TIMING DarkTheme      :  8.00 ms - 135.58 us ( 8.00 ms / 59 ), min:  0.00 ns, max:  1.00 ms, nesting: 0 - 59

Win10 (1903)
CPU: Core i7-8550U
GPU: Intel(R) UHD Graphics 620

Regards
Przemek

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Re: Can you test this is in Win32? [message #53694 is a reply to message #53675]

Tue, 21 April 2020 22:40

Didier
Messages: 725
Registered: November 2008
Location: France

Contributor

I have exactly the same output on an HP Zbook with the laptop screen (which suspect always uses the HD Graphics 4600)
I will test with another screen tomorow since I also have an Nvdia Quadro K2100 in my Zbook

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Re: Can you test this is in Win32? [message #53695 is a reply to message #53694]

Wed, 22 April 2020 08:05

mirek
Messages: 14255
Registered: November 2005

Ultimate Member

Thanks to everybody, I think at this point more testing is not necessarry. The result is that in current Windows, GDI is not HW accelereated, or at least it is not reported as such by API.

Mirek

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Re: Can you test this is in Win32? [message #53696 is a reply to message #53695]

Wed, 22 April 2020 09:55

Didier
Messages: 725
Registered: November 2008
Location: France

Contributor

Hi Mirek,

Same result with my K2100 and external screen (I checked that it was really this GPU that is used)

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