Graphics Programs Reference
In-Depth Information
29. Back in Blender, let's go to the UV/Image Editor and click on
Image → Open
, select
the
bake-grass.tga
image from the hard disk, and open it.
30. Now it's ime to unwrap the mesh again, let's go to the 3D Viewport and
switch to Edit Mode (the
grass
object must be acive). If the UV/Image Editor
switches automaically to the
grass.tga
image, let's go there and switch back
to
bake-grass.tga
(click on the drop-down menu, to the left-hand side of the
name of the image).
31. Once the correct image is selected and the mesh is in Edit Mode, we just need to go
to the 3D View and unwrap the mesh (
Mesh → UV Unwrap... → Unwrap
). This will
give us a new 2D "mesh" above the image in the UV/Image Editor. We just need to
make sure it is enirely contained within the image and scale it down a bit to leave
some space between the borders of the image and the UV layout.
To c r e a t e t h e b a ke To f t h e l i g h t m a p , w e a re g To i n g t To u s e t h e A m b i e n t O c c l u s i To n
capabiliies of Blender's internal render engine, so we need to conigure it
appropriately.
32. Let's go to the
World
tab in the Properies Editor and set it as follows:
F
Ambient Occlusion panel: Enabled
Factor: 1.3
Mode: Add (drop-down menu)
F
Gather panel:
Method: Raytrace
Sampling: Adapive QMC
33. Then go to the
Texture
tab and let's set the Type of the skymap texture to
None
(thus disabling it).
34. Ater all that coniguraion, we are ready to perform the bake; let's make sure
that the grass object is selected and the bake UV layer is the one that is acive (
UV
Texture
panel in the
Object Data
tab of the Properies Editor). Then go to the
Render
tab of the Properies Editor, locate the
Bake
panel, set the
Bake Mode
to
Full Render
, and click on the
Bake
buton. We should see the
bake-grass.tga
image geing illed in with a grayscale image showing the result of the bake.
The baked image has a small problem, though: It looks noisy.
35. To correct that, let's update the file on disk with the image we see currently in the
UV/Image Editor by going to
Image → Save As...
and then replacing the original
bake-grass.tga
image (remember to set the
File Type
as
Targa
and enable the
Relative Path
opion).
