Hi all,
I'm about the check the following changes in. Has anyone else encountered
similar problems and wish to add to the discussion?
Jonathan Lim _ Silicon Graphics _ Mountain View
GPS Graphics Computer Systems CA, USA
On Fri Dec 1 16:09:46 2000, jamagallon@xxxxxxx wrote:
>
> Hi everyone,
>
> I have been building OIV in a Mandrake 7.2 with XFree4.0.1. This xfree
> includes
> version 3.4 of Mesa, that is supposed to be GL1.2 compatible. That gives some
> drawbacks whe building Open Inventor. Basicly, inventor is coded against
> old OpenGL 1.0, where (for example) TexObjs were an extension, and recent
> GLs are 1.1 or 1.2, where TexObjs ar mandatory and functions do not have the
> EXT tail.
>
> Some implementations can support both interfaces (I think even mesa can do
> through preprocessor define flags), but I thin it is cleaner to write the
> code like:
>
> #ifndef GL_VERSION_1_1
> glBindTextureEXT(GL_TEXTURE_2D, 0);
> #else
> glBindTexture(GL_TEXTURE_2D, 0);
> #endif
>
> I also think that for this kind of features (EXTs that have been adopted)
> one could skip the tests for extension presence, because the interface
> is supposed to be usable even if it does nothing (ie, it is just a
> software cache...), but I am not fully confident and so have made the
> minimal changes. If someone can tell me sure (hey, SGI people...) that
> this can be made, I can prepare the patch.
>
> Changes are:
>
> - A couple of casts to make g++2.96 shut up.
> - Poylgon offset interface.
> - Texture objects
> - Tesselator interface if GLU version is 1.2.
>
> Files affected are:
> apps/demos/textomatic/TextWrapper.c++
> apps/nodes/Decal/Decal.c++
> lib/database/src/so/elements/SoGLTextureImageElement.c++
> lib/database/src/so/elements/SoGLCacheContextElement.c++
> lib/database/src/so/nodes/SoShape.c++
> lib/database/src/so/nodes/SoAsciiText.c++
>
> Please, apply. I think it does not break anything and updates build
> compatibility.
>
> If you apply this on CVS, please let me or the list know, so I trash
> my patches and download corrected CVS.
>
> Thank you.
>
> --
> Juan Antonio Magallon Lacarta #> cd /pub
> mailto:jamagallon@xxxxxxx #> more beer
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