/// <summary>
/// Binds a ShaderProgram in order to use it.
/// </summary>
/// <param name="prog">The ShaderProgram to be bound.</param>
public static void Bind(ContentRef <ShaderProgram> prog)
{
ShaderProgram progRes = prog.IsExplicitNull ? null : prog.Res;
if (curBound == progRes)
{
return;
}
if (progRes == null)
{
GL.UseProgram(0);
curBound = null;
}
else
{
if (!progRes.compiled)
{
progRes.Compile();
}
if (progRes.glProgramId == 0)
{
throw new ArgumentException("Specified shader program has no valid OpenGL program Id! Maybe it hasn't been loaded / initialized properly?", "prog");
}
if (progRes.Disposed)
{
throw new ArgumentException("Specified shader program has already been deleted!", "prog");
}
GL.UseProgram(progRes.glProgramId);
curBound = progRes;
}
}
protected override void OnCopyDataTo(object target, ICloneOperation operation)
{
base.OnCopyDataTo(target, operation);
ShaderProgram targetShader = target as ShaderProgram;
targetShader.Compile();
}
protected override void OnCopyTo(Resource r, Duality.Cloning.CloneProvider provider)
{
base.OnCopyTo(r, provider);
ShaderProgram c = r as ShaderProgram;
c.AttachShaders(this.vert, this.frag);
if (this.compiled)
{
c.Compile();
}
}