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[Mesa3d-users] Question about Mesa from a newbie

From: Jiayuan Zhu <jiayuan.zhu@gm...> - 2005-02-02 06:57

HI, 
    I am a newbie to Mesa. I downloaded the mesa lib for MS Windows
system to run my opengl applications and find it great. My application
only uses GL core lib, but not GLU or GLUT. So I've got several
questions about the Mesa lib

1) I put the compiled OpenGL32.dll under the same directory as my
executable(a very simple one) and it works(without utilizing
OSMesa32.dll). Therefore, I was wondering what's the purpose of
placing OSMesa32.dll over there. To my understand, Mesa is a
software-based rendering library and the OpenGL32.dll does the whole
thing.....

2)I am wondering if you can tell me how to add some simple OpenGL APIs
into the current Mesa system. For example, one of my applications
calls an ARB extension "wglGetExtensionStringARB" which is not
available in Mesa, is there any simple way to add it in?

Hope to hear from you soon and thanks a lot for your time!

Jiayuan Zhu 
Ath 221 Dept of Computing Science 
University of Alberta 
T6G 2E8 Canada

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Thread	Author	Date
[Mesa3d-users] Question about Mesa from a newbie	Jiayuan Zhu <jiayuan.zhu@gm...>

Re: [Mesa3d-users] Question about Mesa from a newbie

From: Brian Paul <brian.paul@tu...> - 2005-02-02 19:18

Jiayuan Zhu wrote:
> HI, 
>     I am a newbie to Mesa. I downloaded the mesa lib for MS Windows
> system to run my opengl applications and find it great. My application
> only uses GL core lib, but not GLU or GLUT. So I've got several
> questions about the Mesa lib
> 
> 1) I put the compiled OpenGL32.dll under the same directory as my
> executable(a very simple one) and it works(without utilizing
> OSMesa32.dll). Therefore, I was wondering what's the purpose of
> placing OSMesa32.dll over there. To my understand, Mesa is a
> software-based rendering library and the OpenGL32.dll does the whole
> thing.....

The OSMesa32.dll file should implement the "OSMesa" functions used for 
off-screen rendering.  If you don't know what that is, you probably 
don't need to be concerned with it.


> 2)I am wondering if you can tell me how to add some simple OpenGL APIs
> into the current Mesa system. For example, one of my applications
> calls an ARB extension "wglGetExtensionStringARB" which is not
> available in Mesa, is there any simple way to add it in?

Sure, add them to Mesa/src/mesa/drivers/windows/gdi/wgl.c

-Brian