SOFTIMAGE|XSI 1.5 Tutorial

Render Tree ̿ Alpha Image

ٿε : Pixel_Alpha.zip


Ʈ Alpha äλ, Mixer ̿ ̹ ȯ ˾ƺ ̴. ΰ ̹ Alpha ä Text ̹ ̿Ѵ.


1. Primitive>Surface>Grid ҷ, Ʈ Phong ش.

2. ٷ ̾ Property>Texture Projection>UV Ѵ.

3. Render Treeâ Updateư Ʈ â RefreshѴ. ׷ Nodesư Texture>Image Ѵ.

4. Image ŬϿ Ƽ â ų, Ű 5 Ͽ Browser â ̹ ȭ Ʈ â Drag and Drop ϰ Image Tex ĶͿ Ѵ.

5. Image Phong Ambient Diffuse Render Region .

ٽ ϰ Ʈ ޴ Nodes ư Mixers>Mix2colors ҷ.

Image Mix2colors Color1 ĶͿ ϰ, Mix2colors ٽ Phong Ambient Diffuse Ѵ.

6. Mix2colors ŬϿ Ƽ â Multiply Weght by alpha κ ִ. ش. ׸ Weight 1 ش. ׷ Base color ǰ Alpha ̹ Weight ȴ.

Multiply weight by Alpha ϸ Base color color Weight Ȯ еȴ.

Ʈ 0϶ Base color, 1̸ Color1 ̹ Ÿ. ߰ 0.5 ϸ ̹ Mix ȴ. Overwrap ó

7. ٽ Ʈ â 3 Image Drag and Drop Ѵ. ҷ ̹ ȭ ΰ ̹ ä Text ̴̹. Image tex ϰ Mix2colors ׸ Ѵ. Mix2colors Multiply Weight by Alpha ä д.

̷ ϸ Base Color Image Weight1 Image Ÿ. color ̹ ǥõȴ. ٲٱ Weight1 ̹ ٸ ߰ ̴. Weight1 ̹ , Ʈ â Nodes Color Channels > Picker Ͽ Pick_channel̶ Scalar Ӽ Ÿ.

׷ ٽ Nodesư Conversion>Scalar to Color Ͽ, ߰Ѵ.

XSI_text ̹ Pick_channel Input ϰ Pick_Channel ŬϿ Ƽ â . ׸ Color Space RGBA ϰ ؿ ִ Channel Alpha Ѵ. ̷ϸ Alpha Channel õǾ ǥ ǰ ȴ.

8. Pick_channel Scalar2Colors InputĶͿ ϰ ٽ Mix2colors Weight 1 Ѵ. ׷ ߴ ̹ Ÿµ, Alpha Image Ÿ ٲٱ Scalar2color Mixer ̿ Invert ߰ ָ ȴ.