(Tested) AMD Catalyst 11.1a: OpenGL Tessellation Support is Slightly… Broken

2011/01/19 JeGX

AMD Catalyst 11.1a hotfix + Unigine Heaven OpenGL tessellation + SAPPHIRE HD 6970

I recently received some feedbacks about TessMark and Radeon cards. According to these feedbacks, the OpenGL tessellation no longer works.

Here is the rendering in TessMark with a SAPPHIRE HD 6970 and Catalyst 11.1a:

AMD Catalyst 11.1a hotfix + TessMark

I thought it was a bug in TessMark related to some changes in the new Catalyst 11.1. But actually after some tests, it seems that OpenGL tessellation is simply broken in the new Cat 11.1a.

Here are some cool screenshots of Unigine Heaven with the OpenGL render path (tested on a HD 6970 and on a HD 6950):

AMD Catalyst 11.1a hotfix + Unigine Heaven OpenGL tessellation

Okay now I understand the performance boost in Unigine Heaven claimed by press release (see HERE) 😀

Anyway I will dive in TessMark code, maybe I will find a workaround or a bugfix for this tessellation problem.

UPDATE: I found nothing special in TessMark code. Since real Catalyst 11.1 will be available in few days, I hope this tessellation problem will be fixed in the WHQL driver. Keep in mind that this Cat 11.1a is a BETA driver… I can’t wait to see the real OpenGL tessellation performance of HD 6900 Series.

13 thoughts on “(Tested) AMD Catalyst 11.1a: OpenGL Tessellation Support is Slightly… Broken”

coolmonkey 2011/01/19 at 15:09

Typical AMD

sim 2011/01/19 at 16:17

Useless news ad idiot comment by coolmonkey.

Catalyst 11.1a are not catalyst 11.1.

Cat 11.1a are not yet released, cat 11.1 TOO!

So… beta/leaked driver… what do you want???

-_-‘

Maggot 2011/01/19 at 16:42

Typically for AMD. They know how to make their video card, but always write a driver can not — bad programmers

Stefan 2011/01/19 at 17:26

I replaced OpenGL runtimes with those from “Cat11.1 Vancouver 8.810”
These contain the new extensions, however i saw no changes to tessellation with my Cedar laptop.

http://www.filefront.com/17815054/opengl10428.7z/

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msweed4life 2011/01/19 at 19:57

thanks jeGX!

spyre 2011/01/20 at 00:34

These are not the final 11.1a drivers, the final ones do not have this issue.

sebydick 2011/01/20 at 00:49

i have the same problem with unigine heaven and opengl with my 6850 after i installed 11.1a 😀

Athlonite 2011/01/20 at 14:04

yup it’s not just broken for 68/69xx but 5xxx cards aswell JeGX

Athlonite 2011/01/20 at 14:22

also when trying to run HW geometry test in GPCv 1.95 it crashes with this msg

Problem signature:
Problem Event Name: BEX
Application Name: GpuCapsViewer.exe
Application Version: 1.9.5.0
Application Timestamp: 4d131433
Fault Module Name: StackHash_1e05
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 0000009d
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 5129
Additional Information 1: 1e05
Additional Information 2: 1e055dc3b82332878ece24e1c2bf7559
Additional Information 3: f6c0
Additional Information 4: f6c0a41346d793dae0edcb01b1d11038

Serj 2011/01/20 at 15:52

Why on this site constantly search for a way to blacken AMD?
Cat 11.1a are not yet released!!!!!!!!!!!
Never noticed the same eagerness in the relation nVidia!

P.S: Sorry for bad English.

gogo 2011/01/20 at 21:59

We all know ATI drivers are not so good, not really anything new.

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