[vox-tech] opengl: lines and points

Richard Harke rharke at earthlink.net
Sun Jan 30 00:09:26 PST 2005


On Saturday 29 January 2005 21:49, Peter Jay Salzman wrote:
> Hola,
>
> These are some really embarrassing questions, but I've been stumped for a
> while on this.
>
> I've already written the requisite spinning cube.  I've even texture mapped
> it.  I've written a "flight simulator" that lets you fly around a teapot.
>
> But there are 3 really basic questions I'm at a complete loss at.
>
>
> 1. The only point size that appears to be available is the default
> pointsize of 1, whether I'm dealing with AA or not AA points.  I've
> verified this with glGetFloatv() and GL_POINT_SIZE_RANGE.
>
>    If there are any GL programmers out there, I'm curious what point size
>    ranges you have available on your system.
>
>
> 2. Same problems with lines.  It appears that the only available width is
>    1.  I can make them thicker by drawing lines next to each other, but
>    the only width available on my system, both AA and non-AA, is 1.  Again,
>    I'm curious what other people have available to them.
>
You seem to have a very limited implementation. I don't recall the exact 
number but my system provides a large range of point sizes and line widths.

Richard Harke


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