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DarkBASIC Professional Discussion / Dark shader shaders will run on SM 2.0 onboard GPUS ?

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Juggernaut
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Posted: 21st Jul 2013 13:39
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Hello,

Can anybody please confirm whether the shaders that come with Dark Shaders will run on SM 2.0 supported onboard GPUs / Graphics chips ?

What that the community contributed shader bundle ? Do they run on
SM 2.0 supported onboard GPUs / Graphics chips ?

Please confirm.

Thanks,
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Chris Tate
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Posted: 21st Jul 2013 15:32
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Yes.

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Green Gandalf
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Posted: 21st Jul 2013 20:02
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Not quite - a few require somewhat higher versions such as PS2.x. Whether that counts as SM2 I'm not sure.
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Chris Tate
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Posted: 21st Jul 2013 20:26
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Really? I learned something new today.

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Juggernaut
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Posted: 21st Jul 2013 21:26
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Quote: "Not quite - a few require somewhat higher versions such as PS2.x. Whether that counts as SM2 I'm not sure. "


Which ones does not work on shader model 2.0 GPUs ?
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Green Gandalf
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Posted: 22nd Jul 2013 03:06
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Quote: "Which ones does not work on shader model 2.0 GPUs ?"


Depends on which SM2 GPU you are talking about. For example, PS2a is associated with nVidia GPUs and PS2b with ATI. The main reason for those pixel shader variations is that they allow slightly larger instruction counts than minimal SM2. I can only suggest you check out the specific GPUs you are interested in. I'm not aware of any GPUs that only support pure SM2 - but then I haven't looked for them.

Examples of shaders which are affected are:

Full-Screen
-----------
ColorHighlight.dbs (has two techniques - one for PS2a and one for PS2b)

DepthOfField.dbs (uses PS2a - no idea why there isn't a technique for PS2b)

Object Shaders
--------------

CartoonObject.dbs (uses PS2a)

Relief.fx (uses PS2a)


Some of those shaders could probably be rewritten using pure PS2 by using more passes.
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Juggernaut
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Posted: 22nd Jul 2013 07:22
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Green Gandalf: Thank you for the explanation. Is there any update of the community contributed Ultimate Shader Pack that was released in
2006, not considering the ones available from Evolved ?

Chris Tate: Thank you for the confirmation.
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Chris Tate
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Posted: 23rd Jul 2013 22:14
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You're welcome.

I second Green Gandalf's last point.

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