hi
i try to render an object described in .obj file that contains all the attributes (vertex coordinates, texture coordinates, normals…). i use a loader to load all that to opengl.
the problem is that i want to render the object whith vbo but the count of the attributes is not the same.
the file contains also the indices of each attribute;
exemple of a cube:
the file cube.obj contains:
v -0.5 0 0.5
v 0.5 0 0.5
v -0.5 0 -0.5
v 0.5 0 -0.5
v -0.5 1 0.5
v 0.5 1 0.5
v -0.5 1 -0.5
v 0.5 1 -0.5
8 vertices
vt 0 0 0
vt 1 0 0
vt 0 1 0
vt 1 1 0
vt 0 0 0
vt 1 0 0
vt 0 1 0
vt 1 1 0
vt 0 0 0
vt 1 0 0
vt 0 1 0
vt 1 1 0
12 texture vertices
vn 0 -2 0
vn 0 -1 0
vn 0 -1 0
vn 0 -2 0
vn 0 2 0
vn 0 1 0
vn 0 1 0
vn 0 2 0
8 vertex normals
g Box01
f 1/10/1 3/12/3 4/11/4
f 4/11/4 2/9/2 1/10/1
f 5/9/5 6/10/6 8/12/8
f 8/12/8 7/11/7 5/9/5
f 1/5/1 2/6/2 6/8/6
f 6/8/6 5/7/5 1/5/1
f 2/1/2 4/2/4 8/4/8
f 8/4/8 6/3/6 2/1/2
f 4/5/4 3/6/3 7/8/7
f 7/8/7 8/7/8 4/5/4
f 3/1/3 1/2/1 5/4/5
f 5/4/5 7/3/7 3/1/3
12 faces
f 5/4/5 7/3/7 3/1/3 means a face with 3 vertex(triangle)
5/4/5 means that the coordinate of the first vertex is in the 5th positin of vertex’s array, the texture coordinate is in the 4th position of the textcoord array…
who can hel me?
thanks