is there a way to make an alpha transparent map UV in blender
instead of using GIMP to make the alpha channel ?
i saw something about billboarding
but not cetain if this can be use here !
like i got some big lotus leaves that i want to map but need to make what’s around the leaves disappear!
my lotus picture is a JPG don’t know if this need to be saved as a PNG to have alpha channel
or if this will be traken care by the UV editor where you specify it as alpha!
You can create image with Alpha that’s one way. Other way is to bring the leaf texture in UV window and UV map it to the faces. No Alpha needed with that method. Here is nice tutorial on ivy.
1 - Use a stencil / mask to make a JPG pic which can be used and make a transparent background
2- There is another way with GIMP to clean up around an image and make it black
then add an Alpha transparent layer then save as PNG
3- There is another way to do an alpha image in UV editor for simple hand draw things
then save save as PNG with alpha
like making tire track or simple drawings
then can be also use to make a displacement map
4 - There may be another way to clean up a color pic and save in blender
but how ?
wold be nice to see a wiki page showing all theses methods!