Hey guys,
I’m stuck and I was wondering if anyone could help me.
Bellow it the output of my “Hello Cube” where the vertices have been defined by some boilerplate code.
The mesh data for the cube above is comprised of 24 vertices, 36 indices.
However, imported data from an .obj file does not appear to render. It has 8 vertices and 36 indices.
This question simply boils down to “Why does one set of shape data render, and not the other?”.
My guess is that the ordering of vertices / indices is wrong to some degree, but in my ignorance I can’t see it.
I would appreciate any help on offer.
Below is the data.
I removed normals/uv coords/colours as they’re not currently used by the shader; though each vertex holds that information.
Cube 1 (Renders)
Vertex t1Verts[] = {
//Top
Vector3(-1.0f, +1.0f, +1.0f), // 0
Vector3(+1.0f, +1.0f, +1.0f), // 1
Vector3(+1.0f, +1.0f, -1.0f), // 2
Vector3(-1.0f, +1.0f, -1.0f), // 3
Vector3(-1.0f, +1.0f, -1.0f), // 4
Vector3(+1.0f, +1.0f, -1.0f), // 5
Vector3(+1.0f, -1.0f, -1.0f), // 6
Vector3(-1.0f, -1.0f, -1.0f), // 7
Vector3(+1.0f, +1.0f, -1.0f), // 8
Vector3(+1.0f, +1.0f, +1.0f), // 9
Vector3(+1.0f, -1.0f, +1.0f), // 10
Vector3(+1.0f, -1.0f, -1.0f), // 11
Vector3(-1.0f, +1.0f, +1.0f), // 12
Vector3(-1.0f, +1.0f, -1.0f), // 13
Vector3(-1.0f, -1.0f, -1.0f), // 14
Vector3(-1.0f, -1.0f, 1.0f), // 15
Vector3(+1.0f, +1.0f, +1.0f), // 16
Vector3(-1.0f, +1.0f, +1.0f), // 17
Vector3(-1.0f, -1.0f, +1.0f), // 18
Vector3(+1.0f, -1.0f, +1.0f), // 19
Vector3(+1.0f, -1.0f, -1.0f), // 20
Vector3(-1.0f, -1.0f, -1.0f), // 21
Vector3(-1.0f, -1.0f, +1.0f), // 22
Vector3(+1.0f, -1.0f, +1.0f), // 23
};
GLushort iArr[] = {
0,1,2,
0,2,3, // Top
4,5,6,
4,6,7, // Front
8,9,10,
8,10,11, // Right
12,13,14,
12,14,15, // Left
16,17,18,
16,18,19, // Back
20,22,21,
20,23,22 // Bottom
};
Cube 1 (Imported from .obj - Doesn’t render)
Vertex tVerts[]{
Vector3(1.0f, -1.0f, -1.0f), // 0
Vector3(1.0f, -1.0f, 1.0f), // 1
Vector3(-1.0f, -1.0f, 1.0f), // 2
Vector3(-1.0f, -1.0f, -1.0f), // 3
Vector3(1.0f, 1.0f, -1.0f), // 4
Vector3(1.0f, 1.0f, 1.0f), // 5
Vector3(-1.0f, 1.0f, 1.0f), // 6
Vector3(-1.0f, 1.0f, -1.0f), // 7
};
GLushort iArr[] = {
1,3,0,
7,5,4,
4,1,0,
5,2,1,
2,7,3,
0,7,4,
1,2,3,
7,6,5,
4,5,1,
5,6,2,
2,6,7,
0,3,7
};
Thanks,