Author Topic: Open GL requirements  (Read 5931 times)


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Open GL requirements
« on: November 08, 2001, 01:40:06 PM »
Because it's better.  ':)'

That, and Direct3D isn't portable to any other OS.  So if CL wants to make a Mac version and a Linux version, OpenGL is the (only) way to go.

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Open GL requirements
« Reply #1 on: November 06, 2001, 04:04:34 AM »
OpenGL properties of a specific driver can be checked at the GLinfo website .

I just now had a report of an Intel 810/810E not running Bridge Builder (see here), and it has a severely limited OpenGL line width range (1-3 at 0.5 granularity). Could this be a problem?

Which OpenGL extensions are required to run Pontifex or Bridge Builder?


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Open GL requirements
« Reply #2 on: November 06, 2001, 10:12:26 AM »
Here is the open GL report for Rage Pro Turbo driver as tested on Windows 2000. (The ALL-IN-WONDER PRO, XPERT 98, XPERT@WORK, XPERT@PLAY98, XPERT@PLAY, and XPERT XL all use the same RAGE PRO Display Drivers and software.)

Chronic Logic: anything used by Pontifex not on this list?

GLinfo report GLinfo report

           Driver info
            Driver versionUnknown
            OpenGL version1.1.3

           Extension lists
            WGL extensions

           Implementation specifics
            Various limitationsMax. texture size1024 x 1024
                  Max. number of light sources8
                  Max. number of clipping planes6
                  Max. pixel map table size65536
                  Max. display list nesting level64
                  Max. evaluator order30
                  Point size range0.500 to 10.000
                  Point size granularity0.125
                  Line width range0.500 to 10.000
                  Line width granularity0.125

           Maximum stack depthsModelview matrix stack32
                  Projection matrix stack2
                  Texture matrix stack10
                  Name stack128
                  Attribute stack16

           Framebuffer propertiesSub-pixel precision bits3
                  Max. viewport size2048 x 2048
                  Number of auxiliary buffers0

            Extension specifics

             Generated by GLinfo version 2.0
            Written by Tom Nuydens
            For information, visit


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Open GL requirements
« Reply #3 on: November 08, 2001, 09:20:35 AM »
I have run GLInfo on my VIAO and got exact the same results as above.

The VIAO has an ATI Rage Mobility M1 chip set.
Currently using driver build M6.11.74-T04, version 5.00.2195.4037 - The default drivers from Microsoft.

I have tried all drivers and tools mentioned by Baggio but alas nothing helped.

Why use OpenGL and not DirectX?

(Edited by Eric69 at 8:21 am on Nov. 8, 2001)