Multitex element array problem

OpenGL
1

I am trying to use an indexed array to draw a multitextured scene as follows:

// load vertices
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer (2, GL_FLOAT, v_stride, pVertices);

// load normals
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, n_stride, pNormals);

// set unit 0
glClientActiveTextureARB(GL_TEXTURE0_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, t_stride0, pTexCoords0);
glBindTexture(GL_TEXTURE_2D, base_texture);

// set unit 1
glClientActiveTextureARB(GL_TEXTURE1_ARB);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, t_stride1, pTexCoords0);
glBindTexture(GL_TEXTURE_2D, lightmap);

// draw it.
glDrawElements(GL_TRIANGLES, numIndexes, GL_UNSIGNED_SHORT, pIndexes);

The problem is that the texture coordinates intended for unit 1 are actually overwriting the ones intended for unit 0, and unit 1 coordinates are never initilized. So it looks like glTexCoordPointer() is stuck on unit 0. How do I tell glTexCoordPointer that the data is intended for a texture unit other than 0?

2

Try uisng glActiveTextureARB() too, not just glClientActiveTextureARB(). There might be some confusion in the state vectors.

(Texcoord pointers should be client state, but you never know.)

[This message has been edited by StefanG (edited 11-21-2002).]

3

This topic was automatically closed 183 days after the last reply. New replies are no longer allowed.