Inverting Normalmaps - Revision history

Springheel at 14:51, 3 November 2012

2012-11-03T14:51:18Z

← Older revision		Revision as of 14:51, 3 November 2012
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	The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.		The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.

			[http://www.modwiki.net/w/images/b/b0/Invnorm.png Example Image]


	[[Category:Textures]]		[[Category:Textures]]

Springheel at 23:01, 28 December 2009

2009-12-28T23:01:20Z

← Older revision		Revision as of 23:01, 28 December 2009
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			To see whether a normalmap is inverted, see: [[Inverse Normalmaps]]

	A normalmap is made up of several rgb images.		A normalmap is made up of several rgb images.

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	The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.		The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.




	[[Category:Textures]]		[[Category:Textures]]

Greebo: categorised

2007-06-20T07:01:21Z

categorised

← Older revision		Revision as of 07:01, 20 June 2007
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	The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.		The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.

			[[Category:Textures]]

Springheel at 20:41, 19 June 2007

2007-06-19T20:41:19Z

← Older revision		Revision as of 20:41, 19 June 2007
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	The green channel represents the vertical displacement. For Doom 3 engine based games, it should appear as if it's being illuminated from the bottom.		The green channel represents the vertical displacement. For Doom 3 engine based games, it should appear as if it's being illuminated from the bottom.

	Depending on the application you used to render your normal map, you may need to invert this channel in an image editing application~~. And by judging your normal map, this appears to be the case~~.		Depending on the application you used to render your normal map, you may need to invert this channel in an image editing application.

	The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.		The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.

	~~So in summary, increase the number of samples per pixel when rendering the normal map and invert the green channel in an image editing application.~~

Springheel at 20:40, 19 June 2007

2007-06-19T20:40:08Z

← Older revision		Revision as of 20:40, 19 June 2007
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	A normalmap is made up of several rgb images.		A normalmap is made up of several rgb images.

	~~image coming~~		http://www.mindplaces.com/save/Inverted-Normalmap.png

	In this example, the normal map on the left won't produce the intended result in Doom 3 but the problem is corrected very easily by inverting the green channel as depicted by the normal map on the right.		In this example, the normal map on the left won't produce the intended result in Doom 3 but the problem is corrected very easily by inverting the green channel as depicted by the normal map on the right.

Springheel: New page: A normalmap is made up of several rgb images. image coming In this example, the normal map on the left won't produce the intended result in Doom 3 but the problem is corrected very easil...

2007-06-16T11:48:49Z

New page: A normalmap is made up of several rgb images. image coming In this example, the normal map on the left won't produce the intended result in Doom 3 but the problem is corrected very easil...

New page

A normalmap is made up of several rgb images.

image coming

In this example, the normal map on the left won't produce the intended result in Doom 3 but the problem is corrected very easily by inverting the green channel as depicted by the normal map on the right.

As for each channel itself and what you should be looking for.

The red channel represents the horizontal displacement. It should appear as if it's being illuminated from the right.

The green channel represents the vertical displacement. For Doom 3 engine based games, it should appear as if it's being illuminated from the bottom.

Depending on the application you used to render your normal map, you may need to invert this channel in an image editing application. And by judging your normal map, this appears to be the case.

The blue channel is, from the perspective of an artist, unimportant so you don't really need to concern yourself with it.

So in summary, increase the number of samples per pixel when rendering the normal map and invert the green channel in an image editing application.