2 replies to this topic

[germangb]

Hello, I've been hanging around these forums for like a month or so, sience I started with the game programming stuff, but anyways...

I have the 2d map made of triangles:



and the following texture (this is just an example, so the size of the image is not a power of 2):


My question is: is there any opengl method to make the map look like this directly:


or I have to specify the texture coordinates "manually"?

Any reply is appreciated,
many thanks.

[Goran Milovanovic]

Texture coordinates range from 0 to 1, on both the x and y. So, you just have to project your geometry verts into that space, and that should give you the appropriate texture coordinates.

You can write a program to do it, or you can use a tool like Blender, which comes with many "UV Unwrap" functions.

[germangb]

hello @Goran Milovanovic, thank you very much for the reply!!
I've just realized how easy it is to implement by just dividing the vertex coordinates by the size of the texture.