#144913 - M3d10n - Fri Nov 09, 2007 4:18 am
The outline rendering on the DS is more like an abuse of the anti-alisasing system. Instead of changing the blending of the boundary pixels, it paints them with a specific color, or so it seems. So no, you cannot make the lines thicker that way.
You'll need to use other techniques for drawing outlines.
The most common one (which allows you to have thick lines, and even variable line width) is to have a copy of your model with fully averaged normals, with each vertex slightly displaced along it's own normal (so the model is a bit fatter than the original), painted fully black (or with your outline color) and draw with front-face culling instead of back-face.
The problem is that you'll use more polygons (probably the same amount as drawing your model without backface culling).
You can also do a fake outline effect using the toon shading feature and having the light always pointing in the same direction as the camera is looking to. With a cleverly made toon shading table and averaged normals, you can have the shading only affect the model's edges, creating really thick lines.
The problem is that you cannot use multiple lights that way (you're spending the single light you can use to create the outlines), but you probably could use a environment mapped texture to fake the outlines.