Realtime shaders - drawing lines and text 2004-03-04 - By Guy Rabiller
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Also, the Freetype library is a good candidate for text with OpenGL.
--
guy rabiller | 3d technical director @ LaMaison
Homam Bahnassi wrote:
>Real-time shaders are a great candidate for
>this... And it should be fairly easy to do it
>considering the samples provided with the SDK.
>Note that real-time shaders operate on a
>per-material basis, and might get called multiple
>times for all objects using that material. Still,
>this can be solved easily.
>For text output, unfortunately I can't help much
>with OGL, but looks like the scenario is pretty
>the same with D3D (which we're using). We just use
>textured quads that contain characters sampled
>from a "font" texture. For simplicity, the font is
>monospace, so the calculations are speedy.
>
>Lines on the other hand, are easy and directly
>supported by the 3D API, still, if you need fancy
>line capabilities (width, capping...etc), you're
>back to simulating them with triangles...
>
>I hope this helps,
>Homam Bahnassi
>3D Supervisor
>In|Framez
>
>
>
>>-- --Original Message-- --
>>From: Felix Gebhardt
>>[mailto:gebhardt@(protected)]
>>Sent: Wednesday, March 03, 2004 8:05 PM
>>To: XSI@(protected)
>>Subject: Realtime shaders - drawing lines and
>>text
>>
>>I'm in the need to dynamically draw lines and
>>positioned text into the
>>viewport. Something like the normals display of
>>the
>>User_Normal_Editing.Addon and the name that gets
>>displayed if one activates
>>the "Name" checkbox in the Camera_Visibility
>>Attributes. Realtime shaders
>>seem like an option!?
>>
>>Anyone cares to share some hints and directions
>>about what library to use
>>and what to look for? Is it possible to use Glut
>>as I can't find any font
>>rendering in GLExt? Any other possibilities or
>>ideas?
>>
>>
>
>
>---
>Unsubscribe? Mail Majordomo@(protected) with the following text in body:
>unsubscribe xsi
>
>
>
>
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Also, the Freetype library is a good candidate for text with OpenGL.<br>
--<br>
guy rabiller | 3d technical director @ LaMaison<br>
<br>
Homam Bahnassi wrote:<br>
<blockquote type="cite"
cite="midE1AynaA-0001 (See http://naA-0001.ora-code.com)xk-51@(protected)">
<pre wrap="">Real-time shaders are a great candidate for
this... And it should be fairly easy to do it
considering the samples provided with the SDK.
Note that real-time shaders operate on a
per-material basis, and might get called multiple
times for all objects using that material. Still,
this can be solved easily.
For text output, unfortunately I can't help much
with OGL, but looks like the scenario is pretty
the same with D3D (which we're using). We just use
textured quads that contain characters sampled
from a "font" texture. For simplicity, the font is
monospace, so the calculations are speedy.
Lines on the other hand, are easy and directly
supported by the 3D API, still, if you need fancy
line capabilities (width, capping...etc), you're
back to simulating them with triangles...
I hope this helps,
Homam Bahnassi
3D Supervisor
In|Framez
</pre>
<blockquote type="cite">
<pre wrap="">-- --Original Message-- --
From: Felix Gebhardt
[<a class="moz-txt-link-freetext" href="mailto:gebhardt@(protected)">mailto
:gebhardt@(protected)</a>]
Sent: Wednesday, March 03, 2004 8:05 PM
To: <a class="moz-txt-link-abbreviated" href="mailto:XSI@(protected)">XSI
@(protected)</a>
Subject: Realtime shaders - drawing lines and
text
I'm in the need to dynamically draw lines and
positioned text into the
viewport. Something like the normals display of
the
User_Normal_Editing.Addon and the name that gets
displayed if one activates
the "Name" checkbox in the Camera_Visibility
Attributes. Realtime shaders
seem like an option!?
Anyone cares to share some hints and directions
about what library to use
and what to look for? Is it possible to use Glut
as I can't find any font
rendering in GLExt? Any other possibilities or
ideas?
</pre>
</blockquote>
<pre wrap=""><!---->
---
Unsubscribe? Mail <a class="moz-txt-link-abbreviated" href="mailto:Majordomo
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</pre>
</blockquote>
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