VMD-L Mailing List

From: Bogdan Costescu (Bogdan.Costescu_at_IWR.Uni-Heidelberg.De)
Date: Wed Mar 08 2000 - 14:43:38 CST

Dear VMD Developers,

After almost a month without getting any answer, I took some ours to look
at the code and see why Crystal Eyes Stereo is no longer working on our
O2s.

The answer is that in OpenGLDisplayDevice.C, glXChooseVisual or FORMS
equivalent fl_glwincreate with configuration3[] returns NULL... But if I
define it as:

static int configuration3[] =
   {GLX_DOUBLEBUFFER, GLX_RGBA, GLX_DEPTH_SIZE, 16, GLX_STEREO,
    GLX_RED_SIZE, 4, GLX_GREEN_SIZE, 4, GLX_BLUE_SIZE, 4, None};

meaning that I reduce the size of GLX_RED_SIZE (and others) from 8 to 4,
everything works correctly.

VMD 1.3 had no size related attributes, so it worked correctly. Now the
question is: is this size of 8 really necessary? The multisampling
configurations are for both 4 and 8, why is the normal configuration only
for 8?

I would appreciate an answer...

Best regards,

Bogdan Costescu

IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
E-mail: Bogdan.Costescu_at_IWR.Uni-Heidelberg.De

On Tue, 15 Feb 2000, Bogdan Costescu wrote:

>
> Dear list members,
>
> I have problems getting stereo with Crystal-Eyes to work with VMD 1.4 on
> an O2 running IRIX 6.5. gfxinfo:
>
> Graphics board 0 is "CRM" graphics.
> Managed (":0.0") 1280x1024
> 32 + 32 bitplanes
> board revision 2, CRM revision C, GBE revision B
> Monitor 0 type: SGX 512
>
> We used to have VMD 1.3 running using the onstereo/offstereo scripts, but
> this solution does not seem to work anymore. Whenever Crystal-Eyes Stereo
> is selected, the 2 images appear one on top of another; running by hand
> onstereo before or after switching VMD to stereo just gives the same 2
> images one on top of another.
> We have some other software running with stereo (and even
> stero-in-a-window).
>
> Is there a solution to this?
>
> Thank you in advance.
>
> Best regards,
>
> Bogdan Costescu
>
> IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen
> Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY
> Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868
> E-mail: Bogdan.Costescu_at_IWR.Uni-Heidelberg.De
>