def __init__(self):
ShaderProgram.__init__(self)
this_dir = os.path.split(__file__)[0]
self.vertex_shader = open(os.path.join(this_dir, "shaders/sphere_vtx.glsl")).read()
self.fragment_shader = open(os.path.join(this_dir, "shaders/sphere_frg.glsl")).read()
# experimental geometry shader
self.geometry_shader = """
#version 120
#extension GL_EXT_geometry_shader4 : enable
void main() {
for(int i = 0; i < gl_VerticesIn; ++i) {
gl_FrontColor = gl_FrontColorIn[i];
gl_Position = gl_PositionIn[i];
EmitVertex();
}
}
"""
self.atom_scale = 1.0
