Time Varying Vertex Shader in vec4 vPosition; in vec4 vColor; uniform float time; /* in milliseconds */ uniform mat4 ModelView, ProjectionMatrix; void main() { vec4 v = vPosition; vec4 t = sin(0.001*time + 5.0*v); v.y = 0.1*t.x*t.z; gl_Position = ModelViewProjectionMatrix * t; }