Hi Quality texturing.

Question

Hi all. I'm completely new in Open GL, so have a question. I need to apply hi quality texturing on the surface rendered via triangles . But on zooming i continue see the triangle's under the skin, it's not smooth. I use OpenGL built-in minMapping. So I wonder (lookig at other products) do i need to implement my own mipMapping algorithm or I'm doing something wrong ?

This is what I want , more ore less, like a quality:

Ok, here what I got :

As yuo can see triangles are clear visible. Instead on the image befpre aren't, even after zooming (I watched a video)

Answer 1

You're probably doing something wrong, the built-in mip mapping should be fine. In any case your description of seeing the triangles doesn't sound like a texturing issue, it sounds like a geometry issue. Are you complaining that you see geometric facets caused by the tessellation when you zoom in really close? If so it has nothing to do with textures, you need to tessellate your geometry more finely (more, smaller triangles).

Answer 2

As others said, that is not a texture problem is a tassellation problem.

The easiest solution would probably be to use normal mapping (unless you want to increase the polygon count). Otherwise you may have to go into more complicated situations like using subdivision surfaces or similar approaches to smoothing.

Answer 3

As you said, you have 8x8 textures, that's terribly small, try at least with 256x256 or 512x512 textures.

Answer 4

I will throw in another opinion, and say that it is a shading problem. The good version is using something like Gouraud shading to smooth things out. Here is a video off of YouTube to illustrate the effect OpenGL GLSL Gouraud Shading so my first guess is that you need to turn on shading.

Answer 5

OK, seems that I found a solution. It's actually the vertex smoothing and cube mapping that creates shining reflective image.