Dont like to necro, but this is pretty important for GIMPists working with textures.
Removing interpolation
SOM uses the pure black 0,0,0 channel to allow for 'seethrough' effects in textures, saving potentially alot of vertices, hence why I made this tutorial for those who want to be efficient in modelling for SOM or similar.
Yesterday I was trying to make some plant textures with this method, however I needed to rotate the leaves in the texture to make it look effective, and after rotating them, I found alot of blurring occured around the edges, which can cause awful effects using the black transparency method in SOM. After searching the internet for a good while I found a solution, it was due to the interpolation being cubic, so set it to none and you can scale / rotate without adverse effects.
Magic wand threshold
Another quick tip, its simple, but if you are having trouble with the aforementioned magic wand tool, try adjusting the threshold. If you want to get a sharper edge around a texture space whilst removing the background colour, increase it to get a more prescise selection.
On the other hand, if you have accidentally created a black background and a gray part of the texture if being removed when you try to isolate the background, put the threshold down until you can de-select the background only.
Removing interpolation
SOM uses the pure black 0,0,0 channel to allow for 'seethrough' effects in textures, saving potentially alot of vertices, hence why I made this tutorial for those who want to be efficient in modelling for SOM or similar.
Yesterday I was trying to make some plant textures with this method, however I needed to rotate the leaves in the texture to make it look effective, and after rotating them, I found alot of blurring occured around the edges, which can cause awful effects using the black transparency method in SOM. After searching the internet for a good while I found a solution, it was due to the interpolation being cubic, so set it to none and you can scale / rotate without adverse effects.
Magic wand threshold
Another quick tip, its simple, but if you are having trouble with the aforementioned magic wand tool, try adjusting the threshold. If you want to get a sharper edge around a texture space whilst removing the background colour, increase it to get a more prescise selection.
On the other hand, if you have accidentally created a black background and a gray part of the texture if being removed when you try to isolate the background, put the threshold down until you can de-select the background only.