vertex arrays and UV coords

Graphics and GPU Programming Programming

Started by duckbob January 06, 2002 08:27 PM

2 comments, last by duckbob 22 years, 3 months ago

122

Author

January 06, 2002 08:27 PM

how do i enter UV coords for use with vertex arrays i have an array of xyz vertexes and 3 incdicies for each polygon, i want to use 2 uv coords, u & v... but do i need to enter them for each point or for each indicie when using vertex arrays? duckbob

Brother Bob

10,350

January 07, 2002 05:55 AM

Texture coordinates belongs to the vertex, which is pointed out by the index.

So, basically, assigning a texture coordinate to vertex or to an index, is more or less the same thing.

duckbob

122

Author

January 07, 2002 05:09 PM

but when i create the list...say i have 8 vertexes and 24 indicies...a box...would i need to have 8 or 24 sets of uv coords?

seregsarn

122

January 07, 2002 09:26 PM

8. The UV coordinates would be stored in the vertexes, not in the index buffers. Then when you''re rendering, you give an index and it uses the x/y/z and u/v for that vertex.

-----------------"I understand your concern. Request denied."