[ros-kernel] FIXES FIXES FIXES Lots of fixes

[Waldo Alvarez Cañizares]

Try my original code using srcpitch:
 
 int IntPart = ((SrcHeight / TgtHeight) * SrcPitch)/2;    // Exactly this, dividing by 2 at the end on purpose
 
I remember that using the other code[ int IntPart = (SrcHeight / TgtHeight) * SrcWidth; ] wasn't working for me. Is some kind of rounding artifact or something. However it should be fixed some other way.
 
In pure math 
 
int IntPart = (SrcHeight / TgtHeight) * SrcWidth;

is the same as

((SrcHeight / TgtHeight) * SrcPitch)/2;
 
computers are a little bit different.
 
Use a dbgprint to get the value of Intpart and check that it is a multiple of srcpitch

Regards
Waldo


________________________________

From: ros-kernel-bounces at reactos.com on behalf of Aleksey Bragin
Sent: Wed 2/18/2004 6:31 AM
To: ReactOS Kernel List
Subject: Re: [ros-kernel] FIXES FIXES FIXES Lots of fixes




----- Original Message -----
From: "Filip Navara" <xnavara at volny.cz>
To: "ReactOS Kernel List" <ros-kernel at reactos.com>
Sent: Sunday, February 15, 2004 1:33 AM
Subject: Re: [ros-kernel] FIXES FIXES FIXES Lots of fixes
> [snip]
> The correct code is
>     int IntPart = (SrcHeight / TgtHeight) * SrcWidth;
> Commited that.

Have you tried stretchblt.exe? Upsizing of lena is OK, but shrinking (zoom <
100%) is broken. If it work for toolbar icons and AbiWord/WinZip
splashscreens in the release, then it's ok, but nevertheless I will revise
that code this week.


WBR,
Aleksey Bragin.

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