Problem with coloring mesh with shaders properly

Questions & Answers
1

Hello, everyone. I am making a 2d digging game. At this time I am trying to make an effect, which darkens my vertices of the mesh, by the distance they are from empty mesh squares (photos below). The problem is that I get some not proper color mixing in the corner squares. The soft diagonal line, seen in the corner squares can be the result of the squares division by two triangles (this is due to manualy (by script) generated mesh. I use Sprites/Default shader, because it can support this vertice coloring. …Is there a way to solve this, to get a nice and smooth color mixing?

Notice the corner squares!

43642-problemayra2.png

43643-problemayra3.png

P.S. when I use different shader, which does not support this vertice coloring, console gives me a notification - “Shader wants tangents, but the mesh doesn’t have them”. I do not do any actions with tangents. Maybe I should do someting, to use other shaders? If you have some knowledge and expierence about this stuff, please, help me to solve this problem.

Thanks .

2

I’m very new to Unity but I have had some skill with modeling meshes. In my experience, when using vertex based shading, the only way to improve quality is to up the vertex count. So try subdividing your mesh a couple of times and it should look better. However, the only way to get a perfectly smooth line without major impact on performance is to use fragment shading like @maccabbe said which is unfortunately beyond my knowledge. I hope this is still of use to @Dainiusss or it helps someone.