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jonmarbach
Journeyman III

Does OpenGL 3.1 support mean ARB_geometry_shader4/EXT_geometry_shader_4?

Hi there - first post, hope I'm not in the wrong place.

I just saw the announcement of OpenGL 3.1 support in the next driver and wondered if that means that OpenGL geometry shaders will finally be supported.

I have a research project that might be very fast on AMD hardware, but I can't run it because of these missing features.

Thanks in advance,
Jon

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bridgman
Staff

As far as I know geometry shaders are part of OpenGL 3.2, not OpenGL 3.1.

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Yes, geometry shaders are in the core 3.2 spec but are left as an ARB extension for 3.1.

So the question still stands - Will the 3.1 driver support ARB_geometry_shader?

 

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Now that Catalyst 9.8 is out, can anyone confirm/deny ARB_geometry_shader4 support?

I don't have any radeon cards to try it out on myself, but if it's in there, it might be time to buy a card or two for performance profiling. 

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Originally posted by: jonmarbach Now that Catalyst 9.8 is out, can anyone confirm/deny ARB_geometry_shader4 support?

 

I don't have any radeon cards to try it out on myself, but if it's in there, it might be time to buy a card or two for performance profiling.



 

OpenGL Extensions Viewer 3.14 says that ARB_geometry_shader4 is suported with catalyst 9.8 (running on Windows 7 RTM 64-bit and Radeon HD 3870)

 

Here's some pics:

http://a.imagehost.org/0582/Cattura_8.jpg
http://a.imagehost.org/0502/Cattura2.jpg
http://a.imagehost.org/0180/Cattura3.jpg

 

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Thanks for the confirmation. I found another post somewhere else saying the same thing, so I picked up a 4850 to test with.

Now the bad news... The extension's there, but I'm getting odd-looking results - as if only the first N triangles ever get rasterized. Anyway, I've posted this problem over on OpenGL.org hoping for more traffic, so that looks like the end of this thread!

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