gamedevlists-windows — List for discussing game development on the Windows platform

VC++ 2005 Express was Re: [GD-Windows] Disabling ClearType programmatically?

[Brian H. <ho...@bo...>]

On Sat, 14 Jan 2006 09:02:34 -0700, Andras Balogh wrote:
> While we are at tools: Did you know that Visual C++ 2005 Express is
> absolutely free (even for commercial use)? 

Yeah, but I still use VC++ 6.0 w/ Visual Assist.  Kickin' it old 
school.  Every release since then has pissed me off righteously in 
some way or another.

Brian

Re: [GD-Windows] Disabling ClearType programmatically?

[Andras B. <and...@gm...>]

While we are at tools: Did you know that Visual C++ 2005 Express is
absolutely free (even for commercial use)? It features the same
optimizing compiler, and the only major things it misses are the ATL
and MFC libraries, and some advanced features like remote debugging..
It also uses the online MSDN for help, which means it does not eat up
your harddrive, and it's more up to date. I think it's worth giving a
try.

I'm sorry if this is not news, but I've only found it out recently and
was pleasantly surprised. I think it's great for indie developers.


Andras

Saturday, January 14, 2006, 12:18:15 AM, you wrote:

> On Fri, 13 Jan 2006 21:30:05 -0800, Jon Watte wrote:
>>
>> MSDN documents CLEARTYPE_QUALITY as separate from
>> ANTIALIAS_QUALITY, for Windows XP and above.

> Argh, not in my version of MSDN and SDK tools =/  Anyway, this'll
> work, thanks!

> Brian

Re: [GD-Windows] Disabling ClearType programmatically?

[Brian H. <ho...@bo...>]

On Fri, 13 Jan 2006 21:30:05 -0800, Jon Watte wrote:
>
> MSDN documents CLEARTYPE_QUALITY as separate from
> ANTIALIAS_QUALITY, for Windows XP and above. 

Argh, not in my version of MSDN and SDK tools =3D/  Anyway, this'll 
work, thanks!

Brian

Re: [GD-Windows] Disabling ClearType programmatically?

[Jon W. <hp...@mi...>]

MSDN documents CLEARTYPE_QUALITY as separate from ANTIALIAS_QUALITY, for 
Windows XP and above. You can also set NONANTIALIASED_QUALITY which will 
make the font not anti-alias (works on all Windows).

A font needs to be selected into a physical device DC before it will do 
anti-aliasing. Thus, if you create a font, and only select it into a 
DIBsection DC, it will draw without anti-aliasing. You can then upload 
this text to a texture or whatnot to render to screen (or draw the 
DIBsection). It's roundabout, but documented, and works.

Cheers,

			/ h+


Brian Hook wrote:
> On Fri, 13 Jan 2006 18:57:00 -0700, Andras Balogh wrote:
> 
>>When you create your font with CreateFont(), you can specify the
>>rendering type with the fdwQuality parameter.
> 
> 
> I wasn't under the impression that it provided a fine grain selection 
> between CT, AA, and point sample?
> 
> Brian


-- 
-- The early bird gets the worm, but the second mouse gets the cheese.

Re: [GD-Windows] Disabling ClearType programmatically?

[Brian H. <ho...@bo...>]

On Fri, 13 Jan 2006 18:57:00 -0700, Andras Balogh wrote:
> When you create your font with CreateFont(), you can specify the
> rendering type with the fdwQuality parameter.

I wasn't under the impression that it provided a fine grain selection 
between CT, AA, and point sample?

Brian

Re: [GD-Windows] Disabling ClearType programmatically?

[Andras B. <and...@gm...>]

When you create your font with CreateFont(), you can specify the 
rendering type with the fdwQuality parameter.


Brian Hook wrote:
> Is there a way to disable ClearType and revert to a cruder form of AA 
> (or none at all) when doing font rendering?  I'm rendering to an 
> HBITMAP which I then use for a texture, and ClearType doesn't work so 
> hot with the rest of the graphics pipeline.
> 
> Brian

RE: [GD-Windows] Disabling ClearType programmatically?

[Jason S. <ja...@wi...>]

This might help:

http://msdn.microsoft.com/library/default.asp?url=3D/library/en-us/gdicpp=
/
GDIPlus/usingGDIPlus/usingtextandfonts/antialiasingwithtext.asp=20

-----Original Message-----
From: gam...@li...
[mailto:gam...@li...] On Behalf Of
Brian Hook
Sent: Friday, January 13, 2006 5:15 PM
To: gam...@li...
Subject: [GD-Windows] Disabling ClearType programmatically?

Is there a way to disable ClearType and revert to a cruder form of AA
(or none at all) when doing font rendering?  I'm rendering to an HBITMAP
which I then use for a texture, and ClearType doesn't work so hot with
the rest of the graphics pipeline.

Brian



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[GD-Windows] Disabling ClearType programmatically?

[Brian H. <ho...@bo...>]

Is there a way to disable ClearType and revert to a cruder form of AA 
(or none at all) when doing font rendering?  I'm rendering to an 
HBITMAP which I then use for a texture, and ClearType doesn't work so 
hot with the rest of the graphics pipeline.

Brian

Re: [GD-Windows] GetDIBits() return values

[Brian H. <ho...@bo...>]

Found the culprit.

Basically it was a resource exhaustion problem.  My basic font 
rendering was:

SelectObject(hdc, font);
hbm =3D CreateCompatibleBitmap( hdcDisplay, w, h );
hbmOld=3DSelectObject(hdc,hbm);
TextOut(hdc, 0, 0, buf, strlen(buf));
SelectObject(hdc,hbmOld);
GetDIBBits( ... ); //get BMI info
GetDIBBits( ... ); //get actual data
free( bits );
free( bmi );
SelectObject( hdc, hfontOld );

The font in use is retained across calls, as is the DC I created 
(using CreateCompatibleDC()).  So this function basically just selects 
a font into the DC, creates a bitmap, selects the bitmap, renders 
text, deselects the bitmap, grabs the bits, frees them, unselects the 
font.

The problem was that I was forgetting to call DeleteObject( hbm ) -- I 
was creating a new bitmap every time the function was called, which is 
why it was happening that "1% of times" -- it took probably a few 
hundred calls (at like 20 calls/second) for it to manifest.

My guess is that HBITMAPs were exhausted or something (these were 
pretty small bitmaps, probably 8K or so each), but instead of dying on 
me and reporting an error where you'd expect, it actually died on me 
inside GetDIBBits() after I received a valid HBITMAP.  The NEXT time 
through it would then die on CreateCompatibleBitmap(), so I'm assuming 
that some kind of resource acquisition/lock was failing inside of 
GetDIBBits() that was failing even though I had a valid HBITMAP.

Adding DeleteObject() made the problem go away, so I'm a happy 
programmer (for now).  Still not sure why GetLastError() wasn't 
reporting anything, but oh well.

Brian

Re: [GD-Windows] GetDIBits() return values

[Brian H. <ho...@bo...>]

On Wed, 04 Jan 2006 19:14:36 -0800, Dan Thompson wrote:
> Any possibility of threading issues?

Doubtful -- it's a Python installation and this is just a simple 
extension for it, no multithreading.

> If the second one fails, you might be able to disasm into gdi and
> see whats up. Could try VirtualAllocing the memory and protect it
> vs Write on the second call, see if it even touches the memory.

I'm not quite that hardcore =3D)

Brian

Re: [GD-Windows] GetDIBits() return values

[Dan T. <da...@ar...>]

Any possibility of threading issues?

If you add a second call to GetDIBits right after (i.e. on skitzo fail, 
try agian), does it work or fail again? Maybe toss a Sleep(1) between 
the two?

If the second one fails, you might be able to disasm into gdi and see 
whats up. Could try VirtualAllocing the memory and protect it vs Write 
on the second call, see if it even touches the memory.

All I got.
-Dan

Brian Hook wrote:

>On Wed, 4 Jan 2006 18:29:22 -0700, Bryan Wagstaff wrote:
>  
>
>>Are you absolutely positive you don't call anything that sets the
>>Windows error before you read it?
>>    
>>
>
>Yeah, very next line is the check and report.  This one is mystifying 
>me, leading me to think it's a memory corruption issue because it only 
>happens about 1% of the time using the exact same inputs.
>
>Brian
>
>
>
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RE: [GD-Windows] GetDIBits() return values

[Brian H. <ho...@bo...>]

On Wed, 4 Jan 2006 18:29:22 -0700, Bryan Wagstaff wrote:
> Are you absolutely positive you don't call anything that sets the
> Windows error before you read it?

Yeah, very next line is the check and report.  This one is mystifying 
me, leading me to think it's a memory corruption issue because it only 
happens about 1% of the time using the exact same inputs.

Brian

RE: [GD-Windows] GetDIBits() return values

[Bryan W. <br...@xm...>]

Are you absolutely positive you don't call anything that sets the =
Windows
error before you read it?

I spent a few days trying to figure out why a certain bit of code always
logged windows error 2, but I couldn't get an error when run in the
debugger.  After a while, I realized that the logging macros were =
resetting
the error code to either 0 or 2.  The error 2 came from trying to write =
to
the debugger when it wasn't attached.

Just something to look for.


Bryan.

-----Original Message-----
From: gam...@li...
[mailto:gam...@li...] On Behalf Of =
Brian
Hook
Sent: Wednesday, January 04, 2006 3:42 PM
To: gam...@li...
Subject: [GD-Windows] GetDIBits() return values

On occasion GetDIBits() returns 0, indicating failure, but=20
GetLastError() returns 0, indicating success.  The dimensions I pass=20
in are scan start=3D0,scanlines=3D12.  Everything seems to work fine, =
but=20
very occasionally (< 1% of the time) I get a return value that !=3D 12.

Anyone know under what conditions this might happen?

Thanks,

Brian



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[GD-Windows] GetDIBits() return values

[Brian H. <ho...@bo...>]

On occasion GetDIBits() returns 0, indicating failure, but 
GetLastError() returns 0, indicating success.  The dimensions I pass 
in are scan start=3D0,scanlines=3D12.  Everything seems to work fine, but 
very occasionally (< 1% of the time) I get a return value that !=3D 12.

Anyone know under what conditions this might happen?

Thanks,

Brian

[GD-Windows] streaming video into textures

[Andras B. <and...@gm...>]

I'm not sure if this is the right list to ask this question (it spans
across Windows, DirectShow, OpenGL and a bit of D3D even), so if you
think you know of a better place to ask, then please don't hesitate to
redirect me. :)

I'm trying to stream video files and real-time captured video frames
(eg. from webcam, tv tuner, etc..) into OpenGL textures.

First, I've looked into Video For Windows. The API is simple, the docs
is good, implementation is a snap. So now I can play AVI files
anywhere there is a texture. It looks great! :)

Video for Windows is far from perfect though. It only supports AVI
files (no MPEG, WMV or other fancy formats), it decompresses the
frames into system memory (which is somewhat inefficient), and it
doesn't support capturing frames from external sources at all.

So I turned my attention towards DirectShow. This solution is waay
more complex, and after intensive Googling, browsing the MSDN, and the
SDK samples for two days, there are still some unanswered questions.
So here I am. :)

I understand the part where I have to create a filter graph, which is
very flexible, and enables me to play back basically anything that I
have a DirectShow codec or WDM driver for.

The part where I get confused is how do I get my hands on the frame
image data itself? There seems to be a couple ways to do it. One of
them is using the ISampleGrabber filter. One thing I don't understand
about this method is I couldn't put this filter after the decoder in
graphEdit. It would always put an extra AVI decompressor plus a color
space converter afterwards. Why is that? I feel that the documentation
is lacking, I don't have a clear undersanding about what this filter
actually does. Also, the doc says that its header file is incompatible
with newer directx headers, and that made me feel a bit uneasy. Is
this some deprecated API?

Then I've found the VMR-9. Everyone is raving about it, HW accelerated
deinterlacing, color space conversion, muxing multiple sources,
renders straight into VRAM, etc... Seems like exactly what I need!
Unfortunately, this is the most complicated solution of all. I have
found samples that demonstrate how to decode video into DirectX
surfaces, but I don't know too muh about DX, I'd like to avoid that as
much as possible.. I've read that I have make my custom implementation
of VMR's allocator interface, but it seems like that this interface
only takes a pointer to a DX surface. What I'd love to be able to do
instead, is to just pass an arbitrary pointer (that would probably
point straight into a PBO, from where texture updates should be
lightning fast).

Question #1: Do I really need to create a DirectX surface, and render
the video frames into that? Is this the only way? If yes, how can I
copy this data over to OpenGL efficiently?

Question #2: I read somewhere that VMR-9 does not work with captured
video?? Can anyone confirm/deny this? If that's the case it would be
pretty much useless for me..

Question #3: What other options are there that I've missed?

As a sidenote, I did see the nVidia samples, but the OpenGL version is
a mess and the precompiled version they provided in the SDK does not
even work, so I didn't look too hard there. If anyone knows a better
VMR-9/GL sample that would be great! But all I'm really looking for is
some pointers in the right direction. I just don't want to spend days
on figuring out something, when that something might not even work for
me at all.


Thanks,


Andras

RE: [GD-Windows] Visual Studio 2005

[Chris R. <c....@gm...>]

> Their unit test tools would be good if they were the only game in town, but
> there are cppunit and nunit that MS has to compete with.  You might notice
> that in most of the MS Developers' presentations, they have the
> TestDriven.net plug-in installed on their VS2005 systems. 
We have been using cppunit for quite a while now and are quite satisfied
with it's usability. It is just sad that there is no IDE integration for
it, all usage of cppunit has to be done by hand (creating a test-file,
adding test-cases, etc). 

> Refactoring tools (both free and commercial) have been around for quite some
> time and MS's short list of features look like the bare minimum that they
> could get away with and still call it "refactoring tools".  If you want a
> serious tool for that, look elsewhere.  The refactoring offerings in MS's
> betas have been lackluster.  Spend the money and buy 3rd party if you are
> serious about doing it.
We have been using the ref++ plugin from http://www.refpp.com . Again,
here the drawback is that ref++ needs to rebuild it's parsing cache
everytime you want to use it (and that can become a pain with large
projects). I am not aware of other refactoring tools/plugins for c++ for
visual studio.

> 
> They integrated FxCop, which isn't too surprising since it came from MS to
> begin with.
That tool does static and dynamic code analysis for managed assemblies?
What about code analysis, especially profiling, for native applications?

In VS 6 they had this not very powerful, but still useful, profiling
option for c/c++ code. 

Somehow it vanished in VS.Net and I miss it. We purchased several
licenses of Intel VTune to replace it - a very nice suite of tools for
performance analysis if it does not get confused and lose synbol
information for your project.

> They are collaboration tools that you might (or might not) find useful.
> There are a lot of good features in there for end-to-end tracking: from the
> bug report to the final feedback.  We liked some of the features, but
> decided to stay away from it in the end because our existing tools offered
> the features we needed, were free, and have already been customized to fit
> our environment.  

To add to that, it seems as if you get into license hell with it. It
seems as if everybody on the team would need to have a user license to
access the foundation server, plus a client license to use the client
tools. Seems as if we will stick to python scripts and bugzilla for now.

Seems as if I have not missed much in the last year. All this marketing
voodoo sounded to good to be true. 

Thanks for your insights!

regards, 
Chris Raine 

RE: [GD-Windows] Visual Studio 2005

[Bryan W. <br...@xm...>]

On Friday, October 28, 2005 4:55 PM
Chris Raine said:

> I would like to know which improvements to Visual Studio regarding C++
development have been added (subquestion : What about automated
unit-tests, refactoring for C++ ?).

VS2005 has had betas available for about a year.  I'm surprised you haven't
tried it out, at least to see if your code still compiles. ;-)

After the initial shock of every file needing to irrevocably migrate from
the 2003 format to the 2005 format, it looks pretty good.  (C'mon people,
it's XML; you shouldn't need to do that any more...)  There are many
incremental improvements.  There are many additions that seem more like
trying to compete with the free and commercial plug-ins.  It looks a lot
more like office.  It integrates with the other apps, for better or worse.

The tools you mentioned have been available through other means for quite
some time, even outside the VS2005 betas.  We've been using better tools and
I feel like MS is just trying to play catch up on them.

Their unit test tools would be good if they were the only game in town, but
there are cppunit and nunit that MS has to compete with.  You might notice
that in most of the MS Developers' presentations, they have the
TestDriven.net plug-in installed on their VS2005 systems. 

Refactoring tools (both free and commercial) have been around for quite some
time and MS's short list of features look like the bare minimum that they
could get away with and still call it "refactoring tools".  If you want a
serious tool for that, look elsewhere.  The refactoring offerings in MS's
betas have been lackluster.  Spend the money and buy 3rd party if you are
serious about doing it.

They integrated FxCop, which isn't too surprising since it came from MS to
begin with.

> And what is this Team Server or Team Foundation thing all about? What
benefits would my development team have if we start using it?

They are collaboration tools that you might (or might not) find useful.
There are a lot of good features in there for end-to-end tracking: from the
bug report to the final feedback.  We liked some of the features, but
decided to stay away from it in the end because our existing tools offered
the features we needed, were free, and have already been customized to fit
our environment.  

> What about nice features tailored towards game development (asset
management, etc) ? I read about a special version of Visual Studio 2005
tailored for game developers a few months ago, but I cannot find a
single reference to game development on Microsoft's VS site.

You might be referring to XNA and XNA Studio.  I've read about it but
haven't seen anything beyond marketing.  Others might know more about it.
 
I have heard through the grapevine that the version control in TFS is
moderately good at handling binary assets, but I haven't looked in to that
either.  Our asset chain is pretty good already.  I know they updated Visual
SourceSafe, but it still uses file shares so I wouldn't trust it.  

As always, your mileage may vary.

bryan

[GD-Windows] Visual Studio 2005

[Chris R. <c....@gm...>]

Visual Studio 2005 has been released recently (today?), and I find
myself in the position of manually searching through tons of
marketing-voodoo on Microsoft's Visual Studio site.

I would like to know which improvements to Visual Studio regarding C++
development have been added (subquestion : What about automated
unit-tests, refactoring for C++ ?). 

And what is this Team Server or Team Foundation thing all about? What
benefits would my development team have if we start using it?

What about nice features tailored towards game development (asset
management, etc) ? I read about a special version of Visual Studio 2005
tailored for game developers a few months ago, but I cannot find a
single reference to game development on Microsoft's VS site.

Maybe someone on this list with access to the early-beta's can shed some
light on these topics for me. I gave up on the MS site feeling rather
confused and lost after an hour. 


regards and thanks in advance, 
Chris Raine

Re: [GD-Windows] Mouse position

[Alen L. <ale...@cr...>]

I believe that ScreenToClient() is the simplest solution for that.

Alen

----- Original Message -----=20
From: "Jason Morales" <ja...@s2...>
To: <gam...@li...>
Sent: Tuesday, October 18, 2005 2:12 PM
Subject: Re: [GD-Windows] Mouse position


Check out GetClientRect() and AdjustWindowRect as well, those should
give you all the info you need.

Here is how we get the mouse position in our game:

CRecti CSystem::GetWindowArea()
{
RECT full, client;
int clientw, clienth;
int style;

if (Vid.IsFullScreen())
style =3D WS_POPUP | WS_MAXIMIZE;
else
style =3D WS_CAPTION | WS_MINIMIZEBOX | WS_VISIBLE;

GetClientRect((HWND)m_WindowHandle, &client);
clientw =3D client.right;
clienth =3D client.bottom;
AdjustWindowRect(&client, style, false);
GetWindowRect((HWND)m_WindowHandle, &full);

return CRecti(full.left - client.left,
full.top - client.top,
full.left - client.left + clientw,
full.top - client.top + clienth);
}


CVec2i CSystem::GetMousePos()
{
CRecti winrec =3D GetWindowArea();
POINT p;
::GetCursorPos(&p);
return CVec2i(p.x - winrec.left, p.y - winrec.top);
}


Diogo de Andrade wrote:

> Hey all=85
>
> I=92m having a small problem getting the coordinate of the mouse in the=
=20
> window=85 My current system gets the coordinate like this:
>
> POINT pt;
>
> GetCursorPos(&pt);
>
> Then I want to transform this coordinate (in absolute screen coordinate=
s,=20
> as I see it) to my engine's coordinates (which has logical coordinates,=
 to=20
> account for different resolutions, bitmap scaling, etc)...
>
> I get the window rectangle (also in screen coordinates):
>
> RECT rect;
>
> GetWindowRect(m_window,&rect);
>
> Finally, I do the conversion itself
>
> float sx=3Drect.right-rect.left;
>
> float sy=3Drect.bottom-rect.top;
>
> float relative_x=3Dvirtual_res_x*(pt.x-rect.left)/sx;
>
> float relative_y=3Dvirtual_res_y*(pt.y-rect.top)/sy;
>
> This works almost perfectly, except when I approach the cursor from the=
=20
> top of the window... The window has the standard bar (created with=20
> WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBO=
X |=20
> WS_MAXIMIZEBOX | WS_VISIBLE | WS_POPUPWINDOW), and apparently=20
> GetWindowRect gets the whole window, including the top bar, instead of=20
> getting only the "drawable" part of it... I imagine the problem is that=
=20
> m_window above is a parent window with 2 children (the system bar, and =
the=20
> drawable part), but I can't find how to get just the drawable rectangle=
 to=20
> do the conversion... This works fine if I create the window without bor=
der=20
> of title/system bar... So, my question is: how do I get the drawable pa=
rt=20
> of the window's rectangle?
>
> Thanks in advance!
>
> Diogo de Andrade
>
> Creative & Technical Director
>
> Spellcaster Studios
>
> dio...@sp...
>
> www.spellcasterstudios.com
>



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Re: [GD-Windows] Mouse position

[Jason M. <ja...@s2...>]

Check out GetClientRect() and AdjustWindowRect as well, those should=20
give you all the info you need.

Here is how we get the mouse position in our game:

CRecti CSystem::GetWindowArea()
{
RECT full, client;
int clientw, clienth;
int style;

if (Vid.IsFullScreen())
style =3D WS_POPUP | WS_MAXIMIZE;
else
style =3D WS_CAPTION | WS_MINIMIZEBOX | WS_VISIBLE;

GetClientRect((HWND)m_WindowHandle, &client);
clientw =3D client.right;
clienth =3D client.bottom;
AdjustWindowRect(&client, style, false);
GetWindowRect((HWND)m_WindowHandle, &full);

return CRecti(full.left - client.left,
full.top - client.top,
full.left - client.left + clientw,
full.top - client.top + clienth);
}


CVec2i CSystem::GetMousePos()
{
CRecti winrec =3D GetWindowArea();
POINT p;
::GetCursorPos(&p);
return CVec2i(p.x - winrec.left, p.y - winrec.top);
}


Diogo de Andrade wrote:

> Hey all=85
>
> I=92m having a small problem getting the coordinate of the mouse in the=
=20
> window=85 My current system gets the coordinate like this:
>
> POINT pt;
>
> GetCursorPos(&pt);
>
> Then I want to transform this coordinate (in absolute screen=20
> coordinates, as I see it) to my engine's coordinates (which has=20
> logical coordinates, to account for different resolutions, bitmap=20
> scaling, etc)...
>
> I get the window rectangle (also in screen coordinates):
>
> RECT rect;
>
> GetWindowRect(m_window,&rect);
>
> Finally, I do the conversion itself
>
> float sx=3Drect.right-rect.left;
>
> float sy=3Drect.bottom-rect.top;
>
> float relative_x=3Dvirtual_res_x*(pt.x-rect.left)/sx;
>
> float relative_y=3Dvirtual_res_y*(pt.y-rect.top)/sy;
>
> This works almost perfectly, except when I approach the cursor from=20
> the top of the window... The window has the standard bar (created with=20
> WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME |=20
> WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_VISIBLE | WS_POPUPWINDOW), and=20
> apparently GetWindowRect gets the whole window, including the top bar,=20
> instead of getting only the "drawable" part of it... I imagine the=20
> problem is that m_window above is a parent window with 2 children (the=20
> system bar, and the drawable part), but I can't find how to get just=20
> the drawable rectangle to do the conversion... This works fine if I=20
> create the window without border of title/system bar... So, my=20
> question is: how do I get the drawable part of the window's rectangle?
>
> Thanks in advance!
>
> Diogo de Andrade
>
> Creative & Technical Director
>
> Spellcaster Studios
>
> dio...@sp...
>
> www.spellcasterstudios.com
>

[GD-Windows] Mouse position

[Diogo de A. <dio...@ne...>]

Hey all.
 
I'm having a small problem getting the coordinate of the mouse in the
window. My current system gets the coordinate like this:
 
POINT pt;
GetCursorPos(&pt);
 
Then I want to transform this coordinate (in absolute screen
coordinates, as I see it) to my engine's coordinates (which has logical
coordinates, to account for different resolutions, bitmap scaling,
etc)... 
I get the window rectangle (also in screen coordinates):
 
RECT rect;
GetWindowRect(m_window,&rect);
 
Finally, I do the conversion itself
 
float sx=rect.right-rect.left;
float sy=rect.bottom-rect.top;
 
float relative_x=virtual_res_x*(pt.x-rect.left)/sx;
float relative_y=virtual_res_y*(pt.y-rect.top)/sy;
 
This works almost perfectly, except when I approach the cursor from the
top of the window... The window has the standard bar (created with
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX
| WS_MAXIMIZEBOX | WS_VISIBLE | WS_POPUPWINDOW), and apparently
GetWindowRect gets the whole window, including the top bar, instead of
getting only the "drawable" part of it... I imagine the problem is that
m_window above is a parent window with 2 children (the system bar, and
the drawable part), but I can't find how to get just the drawable
rectangle to do the conversion... This works fine if I create the window
without border of title/system bar... So, my question is: how do I get
the drawable part of the window's rectangle?
 
Thanks in advance!
 
Diogo de Andrade
Creative & Technical Director
Spellcaster Studios
dio...@sp...
www.spellcasterstudios.com
 
 
 
 

RE: [GD-Windows] Release build confusion

[Chris R. <c....@gm...>]

That actually worked out pretty well.

I still believe (although I am not sure) that the debugger injects it's
memory handlers into the running application at the point it attaches
itself to the process.

I let my application run for a while and attached the debugger later on
- and I easily could pinpoint the offending line of code which caused
this mayhem after a few retries and a few minutes of heavy thinking. We
actually had two memory related issues - one uninitialized pointer, and
as an indirect consequence of that, we took the pointer of an object on
the stack and used it after it was destroyed long ago.

Thanks for all the insights (especially the _heapfill()&co functions)!

regards, 
Chris Raine   








On Wed, 2005-10-05 at 19:52 -0700, Mike Burrows wrote:
> I don't know of a way to disable this, but I'll ask around...
> 
> Have you tried attaching to the process after "Running" (note: note debugging)?
> 
> Just a thought,
> 
> Cheers, Mike
> 
> -----Original Message-----
> From: gam...@li... [mailto:gam...@li...] On Behalf Of Emmanuel Astier
> Sent: Wednesday, October 05, 2005 9:00 AM
> To: gam...@li...
> Subject: Re: [GD-Windows] Release build confusion
> 
> I second that.
> 
> I had the same issue noe month ago : crashing outside
> VS, not crashing inside.
> And it was a non initialized pointer that lead to the
> crash.
> 
> Funny thing is, one week later, I had the opposite
> behaviour : crashing inside VS, not crashing outside,
> still for memory reasons...
> 
> What I'm not aware of, is a way to tell VS not to
> behave this way. Is there a way  ?
> 
> 
> Emmanuel
> 
> 
> --- Kent Quirk <ken...@co...> a écrit :
> 
> > I believe that unless you tell it not to, the
> > debugger fills 
> > newly-allocated memory with zeros. You may be
> > counting on that behavior 
> > somewhere. Check your initializations, particularly
> > of pointers; you may 
> > assume they're zero if they haven't yet been
> > assigned.
> > 
> >     Kent
> > 
> > 
> > 
> > Chris Raine wrote:
> > 
> > >Hi, 
> > >
> > >I have a problem with our release builds which is
> > driving me nuts for a
> > >couple of days now. If we start our release build
> > from within the Visual
> > >Studio debugger, everything works fine, yet if we
> > start our release
> > >build outside of Visual Studio, it either crashes
> > or displays weird
> > >render artifacts. The debug build works in the IDE
> > as well as outside. 
> > >
> > >  
> > >
> > 
> > 
> > 
> >
> -------------------------------------------------------
> > This SF.Net email is sponsored by:
> > Power Architecture Resource Center: Free content,
> > downloads, discussions,
> > and more.
> > http://solutions.newsforge.com/ibmarch.tmpl
> > _______________________________________________
> > Gamedevlists-windows mailing list
> > Gam...@li...
> >
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> > Archives:
> >
> http://sourceforge.net/mailarchive/forum.php?forum_id=555
> > 
> 
> 
> 
> 	
> 
> 	
> 		
> ___________________________________________________________________________ 
> Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger 
> Téléchargez cette version sur http://fr.messenger.yahoo.com
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
> http://sourceforge.net/mailarchive/forum.php?forum_id=555
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
> http://sourceforge.net/mailarchive/forum.php?forum_idU5
> 

RE: [GD-Windows] Release build confusion

[Andrew G. <ag...@cl...>]

Like Mike says (hi Mike, sorry I missed you in Brighton btw :)) I don't
think there's anyway to disable this, it's an implicit behaviour of the
debug heap. However you *CAN* control what the heap is filled with =
while
debugging (see _heapfill etc) and this is something you should =
certainly
make use of.

Personally I consider utilising this functionality to be as fundamental =
as
checking (and asserting on) memory leaks in debug versions. If you =
aren't
considering the case where allocated memory has undefined values then =
at
best you're setting yourself up for undefined behaviour, and at worst
horrible crashes that only occur after playing X number of levels.

Our memory manager allows you to toggle the value which =
allocated/free'd
memory is filled with, and different people use different settings to =
catch
problems. Personally I have everything filled with NANs and run with
floating point exceptions as I find this to be most useful on a day to =
day
basis.

________________________
andrew grant
lead programmer . climax group

=20

> -----Original Message-----
> From: gam...@li...
[mailto:gamedevlists-
> win...@li...] On Behalf Of Mike Burrows
> Sent: Wednesday, October 05, 2005 7:52 PM
> To: gam...@li...
> Subject: RE: [GD-Windows] Release build confusion
>=20
> I don't know of a way to disable this, but I'll ask around...
>=20
> Have you tried attaching to the process after "Running" (note: note
debugging)?
>=20
> Just a thought,
>=20
> Cheers, Mike
>=20
> -----Original Message-----
> From: gam...@li...
[mailto:gamedevlists-
> win...@li...] On Behalf Of Emmanuel Astier
> Sent: Wednesday, October 05, 2005 9:00 AM
> To: gam...@li...
> Subject: Re: [GD-Windows] Release build confusion
>=20
> I second that.
>=20
> I had the same issue noe month ago : crashing outside
> VS, not crashing inside.
> And it was a non initialized pointer that lead to the
> crash.
>=20
> Funny thing is, one week later, I had the opposite
> behaviour : crashing inside VS, not crashing outside,
> still for memory reasons...
>=20
> What I'm not aware of, is a way to tell VS not to
> behave this way. Is there a way  ?
>=20
>=20
> Emmanuel
>=20
>=20
> --- Kent Quirk <ken...@co...> a =E9crit :
>=20
> > I believe that unless you tell it not to, the
> > debugger fills
> > newly-allocated memory with zeros. You may be
> > counting on that behavior
> > somewhere. Check your initializations, particularly
> > of pointers; you may
> > assume they're zero if they haven't yet been
> > assigned.
> >
> >     Kent
> >
> >
> >
> > Chris Raine wrote:
> >
> > >Hi,
> > >
> > >I have a problem with our release builds which is
> > driving me nuts for a
> > >couple of days now. If we start our release build
> > from within the Visual
> > >Studio debugger, everything works fine, yet if we
> > start our release
> > >build outside of Visual Studio, it either crashes
> > or displays weird
> > >render artifacts. The debug build works in the IDE
> > as well as outside.
> > >
> > >
> > >
> >
> >
> >
> >
> -------------------------------------------------------
> > This SF.Net email is sponsored by:
> > Power Architecture Resource Center: Free content,
> > downloads, discussions,
> > and more.
> > http://solutions.newsforge.com/ibmarch.tmpl
> > _______________________________________________
> > Gamedevlists-windows mailing list
> > Gam...@li...
> >
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> > Archives:
> >
> http://sourceforge.net/mailarchive/forum.php?forum_id=3D555
> >
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> __________________________________________________________________
> _________
> Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! =
Messenger
> T=E9l=E9chargez cette version sur http://fr.messenger.yahoo.com
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, =
discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
> http://sourceforge.net/mailarchive/forum.php?forum_id=3D555
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content, downloads, =
discussions,
> and more. http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
> https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
> http://sourceforge.net/mailarchive/forum.php?forum_idU5

RE: [GD-Windows] Release build confusion

[Mike B. <mi...@wi...>]

I don't know of a way to disable this, but I'll ask around...

Have you tried attaching to the process after "Running" (note: note =
debugging)?

Just a thought,

Cheers, Mike

-----Original Message-----
From: gam...@li... =
[mailto:gam...@li...] On Behalf Of =
Emmanuel Astier
Sent: Wednesday, October 05, 2005 9:00 AM
To: gam...@li...
Subject: Re: [GD-Windows] Release build confusion

I second that.

I had the same issue noe month ago : crashing outside
VS, not crashing inside.
And it was a non initialized pointer that lead to the
crash.

Funny thing is, one week later, I had the opposite
behaviour : crashing inside VS, not crashing outside,
still for memory reasons...

What I'm not aware of, is a way to tell VS not to
behave this way. Is there a way  ?


Emmanuel


--- Kent Quirk <ken...@co...> a =E9crit :

> I believe that unless you tell it not to, the
> debugger fills=20
> newly-allocated memory with zeros. You may be
> counting on that behavior=20
> somewhere. Check your initializations, particularly
> of pointers; you may=20
> assume they're zero if they haven't yet been
> assigned.
>=20
>     Kent
>=20
>=20
>=20
> Chris Raine wrote:
>=20
> >Hi,=20
> >
> >I have a problem with our release builds which is
> driving me nuts for a
> >couple of days now. If we start our release build
> from within the Visual
> >Studio debugger, everything works fine, yet if we
> start our release
> >build outside of Visual Studio, it either crashes
> or displays weird
> >render artifacts. The debug build works in the IDE
> as well as outside.=20
> >
> > =20
> >
>=20
>=20
>=20
>
-------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content,
> downloads, discussions,
> and more.
> http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
>
https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
>
http://sourceforge.net/mailarchive/forum.php?forum_id=3D555
>=20



=09

=09
	=09
_________________________________________________________________________=
__=20
Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! =
Messenger=20
T=E9l=E9chargez cette version sur http://fr.messenger.yahoo.com


-------------------------------------------------------
This SF.Net email is sponsored by:
Power Architecture Resource Center: Free content, downloads, =
discussions,
and more. http://solutions.newsforge.com/ibmarch.tmpl
_______________________________________________
Gamedevlists-windows mailing list
Gam...@li...
https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
Archives:
http://sourceforge.net/mailarchive/forum.php?forum_id=3D555

Re: [GD-Windows] Release build confusion

[Emmanuel A. <e_a...@ya...>]

I second that.

I had the same issue noe month ago : crashing outside
VS, not crashing inside.
And it was a non initialized pointer that lead to the
crash.

Funny thing is, one week later, I had the opposite
behaviour : crashing inside VS, not crashing outside,
still for memory reasons...

What I'm not aware of, is a way to tell VS not to
behave this way. Is there a way  ?


Emmanuel


--- Kent Quirk <ken...@co...> a écrit :

> I believe that unless you tell it not to, the
> debugger fills 
> newly-allocated memory with zeros. You may be
> counting on that behavior 
> somewhere. Check your initializations, particularly
> of pointers; you may 
> assume they're zero if they haven't yet been
> assigned.
> 
>     Kent
> 
> 
> 
> Chris Raine wrote:
> 
> >Hi, 
> >
> >I have a problem with our release builds which is
> driving me nuts for a
> >couple of days now. If we start our release build
> from within the Visual
> >Studio debugger, everything works fine, yet if we
> start our release
> >build outside of Visual Studio, it either crashes
> or displays weird
> >render artifacts. The debug build works in the IDE
> as well as outside. 
> >
> >  
> >
> 
> 
> 
>
-------------------------------------------------------
> This SF.Net email is sponsored by:
> Power Architecture Resource Center: Free content,
> downloads, discussions,
> and more.
> http://solutions.newsforge.com/ibmarch.tmpl
> _______________________________________________
> Gamedevlists-windows mailing list
> Gam...@li...
>
https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> Archives:
>
http://sourceforge.net/mailarchive/forum.php?forum_id=555
> 



	

	
		
___________________________________________________________________________ 
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