[gameprogrammer] Re: GL 2.0 on Xorg w/ ATI's proprietary drivers

On Wed, 2006-05-10 at 23:29 +0200, Latimerius wrote:
> On Wed, May 10, 2006 at 03:00:53PM -0400, Roger D Vargas wrote:
> 
> > I have a Radeon 9800 pro with propietary drivers+Xorg 7 in linux. I can 
> > try to test your program and see what happens this weekend at home, if 
> > it is not secret or something like that. Just tell me the dependencies 
> > in case in need to install something extra and make sure your app runs 
> > in 640x480 (I have a nice card but a very old monochrome display).
> 
> Thank you, you are very kind.
> 
> As for the test, it's very simple.  Just try to compile the following
> program:
> 
> <snip>
> 
> #include "GL/gl.h"
> #include "GL/glext.h"
> 
> int main ()
> {
>       glCreateProgram ();
> }
> 
> </snip>
> 
> using the following command:
> 
> g++ -g -Wall -DGL_GLEXT_PROTOTYPES -o test test.cpp -lGL
> 
> If your installation has the same problem as mine, you'll get something
> like:
> 
> test.cpp: In function `int main()':
> test.cpp:7: error: `glCreateProgram' undeclared (first use this function)
> test.cpp:7: error: (Each undeclared identifier is reported only once for 
>    each function it appears in.)

Aren't those compiler errors, not link errors? It looks like the symbol
is not defined in gl.h or glext.h. I would go to /usr/include/GL and
grep to see if glCreateProgram is defined anywhere. If it isn't then I
would assume that I had an old version of the .h files and try to find
new ones. If glxinfo says you have 2.0 then you have 2.0. 

                Bob Pendleton

> 
> If not, it should link cleanly (it does on my other machine with NVidia
> GPU and drivers).
> 
> > But I think that GL 2.0 is not supported yet.
> 
> Yes, I thought about that, too.  However, running glxinfo on my machine
> says:
> 
> OpenGL version string: 2.0.5755 (8.24.8)
> 
> Which sounds like 2.0 to me.
> 
> Besides, the shader API was available even prior to 2.0, as the
> ARB_shader_objects extension.  glxinfo on my machine says that this
> extension is supported.  But when I try to use it link errors result
> anyway.  (If you want to check it out, replace glCreateProgram with
> glCreateProgramObjectARB in the testing program.)
> 
> Thanks again,
> 
>       latimerius
> 
> 
> 
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> 
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