Documentation - Editing Blendmap
The first thing to do is create a layered texture. Within the editor, find the texture slot of a texture (can be viewed at the top left of the texture browser, starting with #) and apply this number to another texture using the
If done correctly, the texture preview should show the layered texture at the upper right corner of the thumbnail.
You can also add texture layers manually with the
texlayer attribute within a map configuration file:
setshader bumpspecmapworld setshaderparam specscale 0.500000 0.500000 0.500000 0.000000 texture 0 "philipk/pk02/sand01_c.png" texture n "philipk/pk02/sand01_n.png" texture s "philipk/pk02/sand01_s.png" texscale 0.5 texlayer 249
Now that we have a layered texture, we are ready to start painting. Enable the blendbrush by pressing [P]. You can press [P] several times for different methods of applying the brush, such as erasing the blendmap or merging the blendmap.
- Scrolling the mouse wheel will enable you to change the brush shape and density, such as a square, circle or gradient.
- Right clicking will allow you to rotate the blendbrush.
- 1: Blends both textures, but will overwrite existing blendmapping around the brush area (a square).
- 2: Blends textures, adding to the existing blendmap in place.
- 3: Erases the blendmap around the brush area (full erase).
- 4: Similar to #1, except inverted: defaults to vlayer texture and paints base texture over it.
- 5: Similar to #2, except removes the vlayer according to the brush, functioning as an eraser.
To exit the blendmap painting mode, press P until you see “blend mode: off” in the console.
If you can’t see your blendbrush having any effect, try to first fix the existing blendmap by running either
Take note that when you modify cube geometry, the appearance of the blendmap will look broken. This can be easily fixed by re-running either of the above commands.
Clearing the blendmap
The blendmap can be removed/reset with:
Adding custom brushes
A blendbrush can easily be created with any greyscale image. The darker parts are drawn more densely than lighter parts.
|Where do i place them?|
|The default brushes are stored in data/blendbrush. To add custom brushes, you will want to add them to blendbrush/ in your user data directory.|
Dumping the blendmap
You can dump a greyscale image of the blendmap information to your user data. This can be used to quickly visualise which areas of your map have yet to be painted. The painted areas of the blendmap are represented by black pixels.
- You can only paint accurately on horizontal surfaces with a blendbrush. In can be very tricky to paint on a vertical surface (such as a vertical wall).
- Stacked floors cannot have their own blendmap layer. For example, picture a block of apartments where each floor has a layered texture, the blendmap applied on any of the floors will also appear on every other floor where a layered texture is present.
- The blendmap can be combined with grass rendering to create some awesome texture effects.
- Blendmaps created with custom brushes can be viewed by other players even if they don’t have the blendbrushes present in their User Content direcotry. The blendmap painting information is packed into the map file itself.