Array Pointers

index vertex arrays are meant to be used in colour index mode ie 256colours.
is that what u want? maybe a misunderstanding

No, i mean like using the index for the actual vertices of the triangles that I am drawing. Here''s a code sample for a routine in my game library....




void DH_Model::show()
{
// if we dont have a model, we cant show anything
if(!model_loaded){ DH_Error.push("Model Not Loaded"); return; }



// if a texture box is set, use it to set the texture
if(texture_box_set)
TextureBox->setTexture(header.TextureName);



// set the texture coordinate arrays
glTexCoordPointer(2, GL_FLOAT, 0, TexCoords);

// set the normal arrays
glNormalPointer(GL_FLOAT, 0, Normals);

// set the vertex pointer
glVertexPointer(3, GL_FLOAT, 0, Vert_public);

// show the model
glDrawElements(GL_TRIANGLES, header.numFaces*3, GL_UNSIGNED_INT, index);

};


The problem is, i''m not sure how i should setup my texture array "TexCoords". The results i''m getting, are different than I expected. I''m building the array as if it wasn''t indexed. Is this correct?

u should have exactlly the same number of vertices as texcoords as normals

eg for a square u have

B-----C
| |
| |
A-----D 4 verts, 4 texcoords, 4 normals
A B C D
verts[] = { {0,0,0}, {0,1,0}, {1,1,0}, {1,0,0} };
texcoords[] { { 0,0 }, { 0,1 }, { 1,1 }, { 1,0 } };
normals[] = { {0,0,1}, {0,0,1}, {0,0,1}, {0,0,1} };

GLuint index[] = {0,1,2,3};
glDrawElements( GL_QUADS, 4, GL_UNSIGNED_INT, index );

or in this case better(faster) yet

glDrawArrays( GL_QUADS, 0, 4 );