Mesa3d: An implementation of the OpenGL API

SourceForge.net | 1 Aug 2003 18:47

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[ mesa3d-Bugs-781602 ] glTexGeniv mem access error when called by glTexGeni

Bugs item #781602, was opened at 2003-08-01 16:47
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100003&aid=781602&group_id=3

Category: mesa-core
Group: other
Status: Open
Resolution: None
Priority: 5
Submitted By: Michael Phillips (msphil)
Assigned to: Nobody/Anonymous (nobody)
Summary: glTexGeniv mem access error when called by glTexGeni

Initial Comment:
(Turned up using valgrind + Mesa + SoulRide)

In the (I'm told, common) sequence:

glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
glTexGenfv(GL_S, GL_OBJECT_PLANE, p);

the call to glTexGeni passes through _mesa_TexGeni
which passes the address of the third parm (in this
case, GL_OBJECT_LINEAR) to _mesa_TexGeniv, which in
turn creates a float[4] and treats p as an int[4] and
assigns the values before calling glTexGenfv.  As a
result, _mesa_TexGeniv is accessing three undefined
pointers.

(Continue reading)

SourceForge.net | 1 Aug 2003 19:42

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[ mesa3d-Bugs-781602 ] glTexGeniv mem access error when called by glTexGeni

Bugs item #781602, was opened at 2003-08-01 10:47
Message generated for change (Comment added) made by brianp
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100003&aid=781602&group_id=3

Category: mesa-core
Group: other
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Michael Phillips (msphil)
>Assigned to: Brian Paul (brianp)
Summary: glTexGeniv mem access error when called by glTexGeni

Initial Comment:
(Turned up using valgrind + Mesa + SoulRide)

In the (I'm told, common) sequence:

glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
glTexGenfv(GL_S, GL_OBJECT_PLANE, p);

the call to glTexGeni passes through _mesa_TexGeni
which passes the address of the third parm (in this
case, GL_OBJECT_LINEAR) to _mesa_TexGeniv, which in
turn creates a float[4] and treats p as an int[4] and
assigns the values before calling glTexGenfv.  As a
result, _mesa_TexGeniv is accessing three undefined
pointers.

(Continue reading)

SourceForge.net | 1 Aug 2003 19:44

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[ mesa3d-Bugs-742942 ] GL_POLYGON_SMOOTH results in cracks

Bugs item #742942, was opened at 2003-05-24 18:40
Message generated for change (Settings changed) made by brianp
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=100003&aid=742942&group_id=3

Category: None
Group: Rendering Error
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: GL_POLYGON_SMOOTH results in cracks

Initial Comment:
Using osmesa 5.0.1, 24-bit RGB, I am experiencing 
cracks in my polygons when using 
GL_POLYGON_SMOOTHING. This does not seem to 
appear when rendering a primary colour onto a white 
background.

Example, hopefully not too mangled:

#define WIDTH 512
#define HEIGHT 512

unsigned char buffer[HEIGHT][WIDTH][3];
OSMesaContext ctx;

ctx = OSMesaCreateContextExt (OSMESA_RGB, 0, 0,

(Continue reading)

Keith Whitwell | 1 Aug 2003 21:45

newtree regressions

I'll probably try & track down what's going on with these, but thought I'd 
post in case anyone has any ideas.

1) samples/fog -- the green & red cylinder is too dark & grey.
2) samples/olympic -- the olympic rings are all light grey

These problems dissapear with earlier mesa builds & the same sample executables.

Keith

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Jon Smirl | 7 Aug 2003 21:54

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tnl_dd

Mesa newtree doesn't have a tnl_dd directory. Where
should I copy this from? DRI CVS or the old mesa CVS?

=====
Jon Smirl
jonsmirl <at> yahoo.com

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Brian Paul | 7 Aug 2003 22:19

Re: tnl_dd

Jon Smirl wrote:
> Mesa newtree doesn't have a tnl_dd directory. Where
> should I copy this from? DRI CVS or the old mesa CVS?

Looks like the tnl_dd code from DRI CVS is newer.  I'd say use that.

-Brian

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Jon Smirl | 8 Aug 2003 02:00

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Bitkeeper and Mesa

I am getting tired of the very slow response with
Sourceforge CVS, so I just cloned Mesa newtree into
the public Bitkeeper repository
from bitkeeper - bk://mesa3d <at> bkbits.net/newtree
from browser - http://mesa3d.bkbits.net/

My Mesa version is focused on making standalone OpenGL
work. But the whole Mesa newtree is in the repository.
for my version from bitkeeper -
bk://mesa3d <at> bkbits.net/jonsmirl

You can download Bitkeeper here:
http://www.bitkeeper.com/Products.Downloads.html

To pull down Mesa newtree use:
bk clone bk://mesa3d <at> bkbits.net/newtree local_name

I am making tags for when I update from the SF CVS
tree:
http://mesa3d.bkbits.net:8080/newtree/ChangeSet?nav=index.html
I'll keep the bk repository updated as the CVS tree
changes.

You can use these tags to generate patches for CVS,
for example:
bk export -rCVS080603,1.17 -tpatch -h >../patch

Give it a try. I have been using Bitkeeper for over a
year now and I find it much more useful than CVS.

(Continue reading)

Denis Oliver Kropp | 8 Aug 2003 15:56

Re: Bitkeeper and Mesa

Quoting Jon Smirl (jonsmirl <at> yahoo.com):
> I am getting tired of the very slow response with
> Sourceforge CVS, so I just cloned Mesa newtree into
> the public Bitkeeper repository
> from bitkeeper - bk://mesa3d <at> bkbits.net/newtree
> from browser - http://mesa3d.bkbits.net/
> 
> My Mesa version is focused on making standalone OpenGL
> work. But the whole Mesa newtree is in the repository.
> for my version from bitkeeper -
> bk://mesa3d <at> bkbits.net/jonsmirl
> 
> You can download Bitkeeper here:
> http://www.bitkeeper.com/Products.Downloads.html
> 
> To pull down Mesa newtree use:
> bk clone bk://mesa3d <at> bkbits.net/newtree local_name

Hi,

I want to pull down the tree to test the MGA driver and
help by porting over the latest DRI version of the driver.

I'm wondering why it needs version 1(!) of ssh and a password:

  dok <at> skunk[~/bk] bk clone bk://mesa3d <at> bkbits.net/newtree mesa3d
  Pseudo-terminal will not be allocated because stdin is not a terminal.
  Protocol major versions differ: 2 vs. 1

After allowing version 1:

(Continue reading)

Jon Smirl | 8 Aug 2003 17:18

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Re: Bitkeeper and Mesa

--- Denis Oliver Kropp <dok <at> directfb.org> wrote:
>   dok <at> skunk[~/bk] bk clone
> bk://mesa3d <at> bkbits.net/jonsmirl mesa3d
>   Pseudo-terminal will not be allocated because
> stdin is not a terminal.
>   mesa3d <at> bkbits.net's password: 

I sent out the wrong URL. The  <at>  is for admin access.
Change the  <at>  to a dot and it will work. I just tested
it.

bk://mesa3d.bkbits.net/jonsmirl

=====
Jon Smirl
jonsmirl <at> yahoo.com

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Evgeny Kotsuba | 14 Aug 2003 09:30

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What is "noop" ?

Hi,

What "noop" means ?
Such as in  _mesa_noop_DrawElements,  GL_NOOP, api_noop.c  etc.

SY,
Evgeny Kotsuba

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