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help, couldn't understand whats going on!
#27672
05/21/04 16:00
05/21/04 16:00
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Joined: Sep 2003
Posts: 21
cool
OP
Newbie
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OP
Newbie
Joined: Sep 2003
Posts: 21
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what does these things mean?
Could anyone please explain what is happening here?
COLOROP[0] = dotproduct3;
COLORARG1[0] = texture;
COLORARG2[0] = diffuse;
COLOROP[1] = modulate;
COLORARG1[1] = texture;
COLORARG2[1] = current;
In MSDN2001 there is no explanation
Is there a documentation available on these?
Last edited by cool; 05/21/04 16:02.
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Re: help, couldn't understand whats going on!
[Re: cool]
#27673
05/21/04 23:09
05/21/04 23:09
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Joined: Oct 2000
Posts: 1,543
Germany
Alexander Esslinger
Senior Developer
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Senior Developer
Joined: Oct 2000
Posts: 1,543
Germany
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This forum is for shaders, not for fixed function effects. Anyway: If the effect does not use a vertex shader, it doesn't make much sens. The code calculates the dot-product between the value stored in the diffuse-lighting channel (normally the diffuse lightin  ) and the first texture (the normal map). It than multiplies the result with the base texture.
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Re: help, couldn't understand whats going on!
[Re: cool]
#27675
05/22/04 05:41
05/22/04 05:41
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Joined: Dec 2003
Posts: 1,097
Maryland, USA
Steempipe
Serious User
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Serious User
Joined: Dec 2003
Posts: 1,097
Maryland, USA
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Quote:
what does these things mean?
Could anyone please explain what is happening here?
COLOROP[0] = dotproduct3;
COLORARG1[0] = texture;
COLORARG2[0] = diffuse;
COLOROP[1] = modulate;
COLORARG1[1] = texture;
COLORARG2[1] = current;
In MSDN2001 there is no explanation
Is there a documentation available on these?
The ColorOp is the operation that is being applied to the texture in the given stage. This gets it's arguments from ColorArg1 & ColorArg2.
For your example:
Stage [0] is:
ColorArg1[0] is saying to use the texture color from this stage
ColorArg2[0] is saying to use the diffuse color from the vertex components
Colorop[0] is going to apply the Dot3 bumpmapping operation using ColorArg1 & 2.
Stage [1] is:
ColorArg1[1] is saying to use the texture color from this stage
ColorArg2[1] is saying to use current texture which is the result of the previous stage.
ColorOp[1] is going to modulate (modulate does a multiply) between ColorArg1 & 2.
Like it's said, the Dx SDK or MSDN site is the best bet for learning these.
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Re: help, couldn't understand whats going on!
[Re: Steempipe]
#27677
05/22/04 06:27
05/22/04 06:27
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Joined: Oct 2000
Posts: 1,543
Germany
Alexander Esslinger
Senior Developer
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Senior Developer
Joined: Oct 2000
Posts: 1,543
Germany
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Well, then it is quite right, but since the forum is titled with "Shaders", I thought it would be for shaders! Conitec should rename it to "Effects" then.
You could also interpret it like "vertex and pixel shaders in material effects", though  .
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