Why are certain pixel shaders not enabled?

jfs1967 · Sep 7, 2004, 12:22 AM

I see that pixels shaders 19, 20, 21, 22, and 23 are not enabled via the drivers for the 6800 series. The Ultra has shader 23 enabled, though.

Why is this?

Rox271 · Sep 13, 2004, 08:00 PM

How do you see that?

jfs1967 · Sep 14, 2004, 01:45 PM

At this link:

http://www.guru3d.com/article/Videocards/135/14/

I was trying to find out if nVidia address this issue from the previous generation of cards (FX). They haven't. They swept it under the carpet by talking about Shader 3.0 support instead.

Granted, the 6800 series scores well this round in the ShaderMark 2.0 tests, but it still isn't computing pixel shaders 19, 20, 21, and 22 except for the GT and Ultra which computes pixel shader 23.

~~squall Leonhart~~ · Sep 14, 2004, 02:22 PM

give the nvidia driver team some slack hey...

they've just released a new card, and now they need to recompile the drivers to work properly in both SP1 and SP2 for xp, cause of changing in code, and that stupid DEP thing....

it'll get done when it gets done...

hey just be glad you got shaders at all

some people don't

so im sure you can live with out them for now

jfs1967 · Sep 14, 2004, 04:20 PM

Agreed. Benchmarking is a "Voodoo Science". I have my own personal preference having used boards from both nVidia and ATI, and it is purely subjective.

~~squall Leonhart~~ · Sep 14, 2004, 04:27 PM

lol, anyway... you got one shader up on me, as im only runnin a 5900

tb77 · Sep 14, 2004, 06:44 PM

Quote:

Originally Posted by jfs1967

I see that pixels shaders 19, 20, 21, 22, and 23 are not enabled via the drivers for the 6800 series. The Ultra has shader 23 enabled, though.

Why is this?

ShaderMark v2.0 uses some texture formates NVIDIA's FX and 6xxx aren't supporting. These were changed in the v2.1 release. When the development of version 2.0 started, only the ATI Radeon 9xxx were supporting floating point surfaces and textures. That's the simple reason, why I couldn't test it against the caps of the 6xxx. ShaderMark v2.1 uses a base set of floating point textures which both ATI and NVIDIA support.

Thomas

~~squall Leonhart~~ · Sep 15, 2004, 12:40 AM

yep thats bout it

jfs1967 · Sep 15, 2004, 02:45 AM

Here are the ShaderMark 2.1 Test Results

http://www.nordichardware.com/review...ndex.php?ez=13

Sep 7, 2004, 12:22 AM	#1
jfs1967 DriverHeaven Junior Member Join Date: Oct 2003 Location: Berryville, Arkansas Posts: 82 Rep Power: 0	Why are certain pixel shaders not enabled? I see that pixels shaders 19, 20, 21, 22, and 23 are not enabled via the drivers for the 6800 series. The Ultra has shader 23 enabled, though. Why is this?

Sep 13, 2004, 08:00 PM	#2
Rox271 DriverHeaven Addict Join Date: Apr 2003 Location: Here Posts: 251 Rep Power: 0	How do you see that?

Sep 14, 2004, 01:45 PM	Thread Starter #3
jfs1967 DriverHeaven Junior Member Join Date: Oct 2003 Location: Berryville, Arkansas Posts: 82 Rep Power: 0	At this link: http://www.guru3d.com/article/Videocards/135/14/ I was trying to find out if nVidia address this issue from the previous generation of cards (FX). They haven't. They swept it under the carpet by talking about Shader 3.0 support instead. Granted, the 6800 series scores well this round in the ShaderMark 2.0 tests, but it still isn't computing pixel shaders 19, 20, 21, and 22 except for the GT and Ultra which computes pixel shader 23.

Sep 14, 2004, 02:22 PM	#4
~~squall Leonhart~~ The Gunblade Master Join Date: Aug 2004 Location: um.... here Posts: 938 Rep Power: 0	give the nvidia driver team some slack hey... they've just released a new card, and now they need to recompile the drivers to work properly in both SP1 and SP2 for xp, cause of changing in code, and that stupid DEP thing.... it'll get done when it gets done... hey just be glad you got shaders at all some people don't so im sure you can live with out them for now

Sep 14, 2004, 04:20 PM	Thread Starter #5
jfs1967 DriverHeaven Junior Member Join Date: Oct 2003 Location: Berryville, Arkansas Posts: 82 Rep Power: 0	Agreed. Benchmarking is a "Voodoo Science". I have my own personal preference having used boards from both nVidia and ATI, and it is purely subjective.

Sep 14, 2004, 04:27 PM	#6
~~squall Leonhart~~ The Gunblade Master Join Date: Aug 2004 Location: um.... here Posts: 938 Rep Power: 0	lol, anyway... you got one shader up on me, as im only runnin a 5900

Sep 15, 2004, 12:40 AM	#8
~~squall Leonhart~~ The Gunblade Master Join Date: Aug 2004 Location: um.... here Posts: 938 Rep Power: 0	yep thats bout it

Sep 15, 2004, 02:45 AM	Thread Starter #9
jfs1967 DriverHeaven Junior Member Join Date: Oct 2003 Location: Berryville, Arkansas Posts: 82 Rep Power: 0	Here are the ShaderMark 2.1 Test Results http://www.nordichardware.com/review...ndex.php?ez=13