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GL_TEXTURE_MAX_ANISOTROPY_EXT

 
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dav1d



Joined: 12 Sep 2011
Posts: 40

PostPosted: Mon Jul 23, 2012 10:55 am    Post subject: GL_TEXTURE_MAX_ANISOTROPY_EXT Reply with quote

I can't seem to find `GL_TEXTURE_MAX_ANISOTROPY_EXT`. I did a fast grep through the sources and nothing was found.

Is the old `glext` file missing or where can I find `GL_TEXTURE_MAX_ANISOTROPY_EXT`? (Derelict 3)


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aldacron



Joined: 05 May 2004
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Location: Seoul, South Korea

PostPosted: Tue Jul 24, 2012 7:00 pm    Post subject: Reply with quote

I haven't implemented any EXT extensions in Derelict 3 yet.
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ponce



Joined: 12 Nov 2009
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PostPosted: Thu Aug 02, 2012 1:31 am    Post subject: Reply with quote

Another useful extension would be GL_EXT_framebuffer_object.
While it's been superseded by GL_ARB_framebuffer_object, this was recent and they are still cards that only support GL_EXT_framebuffer_object.
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aldacron



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PostPosted: Thu Aug 02, 2012 6:30 am    Post subject: Reply with quote

Do we only want EXT extensions when working with classic GL, or with modern GL as well? I assume the former.
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ponce



Joined: 12 Nov 2009
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PostPosted: Mon Aug 06, 2012 2:03 pm    Post subject: Reply with quote

I'd say both.

Well, you want some extensions when trying to lower hardware requirements (you simply can't require OpenGL 3.0+ for a PC game, much less 4.0+). I would say using OpenGl without extensions is not really feasible in the real world.

Some cards have discontinued drivers that may offer a capability only through a non-ARB extension.

Some extensions are so useful they don't get removed by an ARB equivalent (eg: GL_SGIS_generate_mipmap let's you make mipmaps with OpenGL 1.3).

Also sometimes the vendor version, EXT and ARB version can be slightly different (GL_EXT_framebuffer_object and GL_ARB_framebuffer_object).

That said, most extensions are useless and only some should be available.
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dav1d



Joined: 12 Sep 2011
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PostPosted: Thu Aug 09, 2012 3:10 pm    Post subject: Reply with quote

You always need them (imo), e.g. anisotropic filtering is really great, but it won't merge into "main" opengl anytime soon (licensing issues).
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aldacron



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PostPosted: Fri Aug 10, 2012 2:12 am    Post subject: Reply with quote

OK then. I'll get both of these extensions implemented this weekend.
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aldacron



Joined: 05 May 2004
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PostPosted: Wed Aug 15, 2012 1:19 am    Post subject: Reply with quote

Finally got around to this. Support for both extensions is in. They will be loaded when you call reload. Untested, though.
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ponce



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PostPosted: Wed Aug 15, 2012 4:12 pm    Post subject: Reply with quote

Thanks !
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