Questions tagged [uv-mapping]

The tag has no usage guidance.

13 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
7
votes
0answers
440 views

Perspective-Correct Texture Mapping

I am working on a small rendering engine for a personal project and I am having issues with the texture mapping part of it. It seems to work for some cases, but not for others. For example, when one ...
2
votes
0answers
35 views

Per-object screen space uv issue

I am currently trying to sample a texture in screen space. This works well : ...
2
votes
0answers
52 views

Handling varying texture sizes in an array texture

Say we've idetified that we have a varying number of textures that are upper capped by 2 parametrs. thus we allocate the maximum amount of memory needed to store all textures as follows: ...
2
votes
0answers
165 views

Triplanar UV unwrapping - overlapping triangles

For some time I have been working on UV unwrapper for radiosity computation. The information online about it is very sparse, except how to do it in some high end software. So far I have used triplanar ...
2
votes
0answers
105 views

Algorithm for 3D mesh model segmentation to chart

I'm trying to implement a segmentation model which will divide a 3d mesh model into charts. But I'm having really hard time to find resources in the web. The papers and some other places these ...
2
votes
0answers
314 views

Algorithm to map a triangular mesh onto plane preserving angles and distances from one vertex

I have a 3D triangular mesh representing cortical surface of a brain. I also have one vertex of interest. I would like to unfold a neighborhood of this vertex in such a way that both the angles (their ...
1
vote
0answers
19 views

UV coordinates along stroke / edge of object

I'd like to write a shader that works like the UV Along Stroke node from Blender. Basically, I need UV coordinates that follow the edge of an object and wrap. For clarity, I know how to do edge ...
1
vote
0answers
14 views

What algorithms are needed to map displacement to base mesh?

By given belows, Base mesh(vertices, faces, texture coordinates - UV map), Normal map(1024x1024 image), Displacement map(1024x1024 image), I want to make a mesh which reflects the displacement map. ...
1
vote
0answers
189 views

UV mapping on triangles

After watching some Youtube tutorials I thought I had understood the concept of UV mapping: I have a net of triangles, and I have an image representing my texture. Now I tell the GPU which point of ...
1
vote
0answers
21 views

How can I detect if an edge has flipped during the UV unfold process?

I'm writing my own UV Unfold operation (similar to Maya's Optimize UV tool or 3DS Max's Relax Tool). My code works great 90% of the time but in some instances, I'm getting faces and edges that flip ...
1
vote
1answer
71 views

Export Model Textures Per Face

(Note that as far as attempts go, I can't find anything that helps me) I have a 3D polygon, and for simplicity's sake it's going to be the one below: It is textured using the UV map below: Side ...
1
vote
0answers
115 views

Model UVs optimization

This is related to question on SO (but the purpose of this question is different). I have model with UVs (3DS max UVW editor screenshot) I have grouped some unused parts of UVs on the top right ...
0
votes
0answers
19 views

How to “preserve texture” when transforming vertices

Maya has a feature called preserve texture. It allows you to transform vertices of an object and basically have the texture "stay in place" in object space. Say I have a plane with unwrapped ...