Material retouching using material node with vertex color

material retouching using material node with vertex color. By nanmo.

https://www.foro3d.com/attachment.ph...1&d=1245312108

introduction.

Material retouching is a bien todo control a shaded área by using material nodes with vertex color. It is useful if you didnt get desired results in a tiny shaded área of a model. Now you could remake the model, but remaking takes time. Another bien would be todo use mensaje processing as typified by use of the composite node todo give a 2d effect, Although this creates a partially incorrect 3d look. Or you can adjust Shading of the model with material retouching in less time. So let se how material retouching works.

First, while in Vertex Paint mode, we Will Paint two Shading control áreas, one in red and one in blue. Paint your bright áreas in red, Paint your shadow áreas in blue, and Paint unimportant áreas in black.
figure 1: vertex color painting example. Second, create the following nodes from the original material as shown in the following image.

https://www.foro3d.com/attachment.ph...1&d=1245312108
figure 2: material retouch material node. Note: todo extract red or blue from the vertex colors you use an rgbcurve node. To extract red, you use a value of zero in the green and blue channels of the rgbcurve node. Now you can render your scene and continúe todo adjust your vertex color painting until you achieve your desired look.

https://www.foro3d.com/attachment.ph...1&d=1245312108
figure 3 : left:normal Shading of Suzanne. Right:Concave retouch Shading of Suzanne. Lighting is provided by a Sun Lamp. This method is based on colors because Blender 2.45 doesnt support Shader influence controls. Notice that material retouching only afects colors, not Ray Traced or buffered shadows.

https://www.foro3d.com/attachment.ph...1&d=1245312108
references:
Locally controllable stylized Shading (english). http://www.olm.co.jp/en/rd/2007/07/s...007_paper.html.

Locally controllable stylized Shading (Japanese). http://www.olm.co.jp/b/rd/2007/07/_-...d_shading.html.

Test of ton Shading retouch on 3d (Japanese,XSI). http://artifacts, sakura, ne.jp/sakanaya/2007/10/3d.htm.
credit:
Nanmo (japan). http://bleble, tumblr.com/.

By nanmo. www.blenderart.org.

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-- IMÁGENES ADJUNTAS --
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Gracias por el tutorial. Quisiera agregar (para los lectores del tutorial) que personalmente yo usaría el nodo sepárate/combine RGBA, en vez de las curvas de color. http://wiki.blender.org/index.php/do...bine_rgba_node.

Para separar los canales de color más fácilmente y así trabajarlos de manera independiente. Saludos.

Gracias por el dato, un saludo.

Genial, estaba buscando esto, pero yo uso LightWave es posible hacer lo mismo ahí? Como?