That is a feature of WinXP. It will repair system DLL's that it thinks are damaged or changed.
You should put the Mesa-compiled OpenGL32.dll in the same directory as your application executable. It will find it there first, before the one in System32.
Thanks for your reply.
I have one very basic question.
As OpenGL 2.0 needs h/w support, Mesa provides s/w sln for it, right ?
One funny things is happening with me.
Mesa is giving me OpenGL32.lib/OpenGL32.dll, which contains all def
for 2.0 calls.
When i m making any 2.0 calls, it is refering to
which is for GL 1.1 and does not contain any 2.0 call. So its getting
When i m trying to replace it with my Mesa genreted OpenGL32.dll, its
not able to replace.
I mean, again it is reverting back to the old one.
I dont know why this surprising behaviour is happening.
Thanks in advance
On Wed, May 13, 2009 at 7:08 PM, Brian Paul <firstname.lastname@example.org> wrote:
> vinit bansal wrote:
>> I have downloaded MESA v7.4.
>> I need to run a sample program which uses openGL 2.0 calls on Windows.
>> I have noticed that 2.0 calls are under a flag GL_GLEXT_PROTOTYPES in
>> I have defined this flag and I have tried to use a 2.0 call (in this
>> case glCreateShader(GLenum)). But it gives linker errors:
>> 1>gears.obj : error LNK2019: unresolved external symbol
>> _glCreateShader@0 referenced in function _init
>> 1>.\Debug/gears.exe : fatal error LNK1120: 1 unresolved externals.
>> I am a beginner to openGL.
>> I don't think the gears sample program uses any 2.0 calls.
>> I need help urgently.
> On Windows you need to use function pointers obtained with
> wglGetProcAddress() to call the OpenGL 2.0 functions (actually, OpenGL 1.3
> and later, I believe).
> Probably the best thing to do is use GLEW: http://glew.sourceforge.net/
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