2
votes
2answers
233 views

3D position to UV coordinates in fragment shader

I am interested in converting an arbitrary 3D position computed at run time in the fragment shader to its corresponding UV coordinates. Notice that the 3D position I am interested in is NOT a 3D ...
1
vote
0answers
113 views

Bad texture on model with different GPU [closed]

I have some kind of distortion on the texture of my 3D model. It works perfectly well on an AMD GPU, but when testing on a integrated Intel HD graphics card it has a weird issue. I don't have a ...
0
votes
2answers
762 views

Texture mapping issue in my Wavefront *.obj parser

I wrote a simple *.obj parser reading read vertices, texcoords and normals. But when I draw a model the texture isn't mapped correctly. I have already tried uv.y = 1.0f - uv.y to get inverted Y axis ...
1
vote
1answer
182 views

Skeletal Animation with UV seams

I have a UV-mapped model that I am about to animate and load into my game. Like most unwrapped models, I have several UV seams. In order to render the model correctly, I split each vertex along the ...
11
votes
1answer
3k views

How does UVW texture mapping work?

I'm trying to understand the mathematical theory behind UVW mapping. Can anyone explain me how UVW mapping works? Or at least provide me a pointer?
2
votes
3answers
1k views

Mapping rectangular texture on trapezoid-like shape

I have a problem with rendering rectangular textures on non-rectangular surfaces. While googling, I found a thread with person having a pretty similar problem: ...
5
votes
4answers
3k views

Can't understand these UV texture coordinates (range is NOT 0.0 to 1.0)

Hey, hello guys, I am trying to draw a simple 3D object generated by Google SketchUp 8 Pro onto my WebGL app, the model is a simple cylinder. I opened the exported file and copied the vertices ...
0
votes
1answer
915 views

Texture mapping on gluDisk

I'm trying to map a brick texture on the edge of a fountain and I'm using gluDisk for that. How can I make the right coordinates for the disk? My code looks like this and I have only found a function ...