Does anybody know if I can create a shader program that links only to a vertex shader, without having to specify a fragment program? I know that this can be done with a vertex program (assembly) but I have failed to do that with GLSL (the fragment color becomes black)
All I want is to add some vertex noise and use the fixed opengl pixel pipeline for the shading of the fragment. Is there an equivalent to the gl_Position=ftransform() for the fragment????
Any help would be appreciated