DrawArray works with Vertex Program?

OpenGL OpenGL: Advanced Coding
1

Hi all.

I have a problem. I it is necessary to use Vertex program (ARB OR NV ). But i render geometry with DrawArray and this does not work. I necessary to use DrawElement to work with vertex program? Can there is some method which works with DrawArray?

Sorry for my english.

2

You can use any method of sending vertex data to a vertex program. If you are having a specific problem with sending data in a particular fashion, then it is either in your code or a bug in your OpenGL drivers.

Unfortunately, you haven’t given us your code so that we can check it over, nor have you told us which GL driver you are using.

3

Thanks Korval. I have fixed this mistake.
But i have other problem. I try made bumpmap with dot3 and this beside me work, problem in vertex normal this shows me flat shading no smoot. I give for glNormalPointer vertex normal but this show as if i give polygon normals. You met with this problem someday?

I hope you understand my english.

4

Do you happen to call glShadeModel(GL_FLAT) somewhere in your code ?

Do you normalize the normal in the vertex program ?

Also if it still does not work, try to send the data of the normals in a texture coordinate instead of normal.

5

Thank you for answer

i use glShadeModel(GL_SMOOT); but this does not solve a problem.

Second variant interesting i shall try

Thanks