public override ShaderSourceContent Import(FileStream stream, ContentManager manager) { ShaderSourceContent content = new ShaderSourceContent() { FileName = stream.Name }; string ext = Path.GetExtension(stream.Name); if (ext == ".glsl") { content.ShaderType = ShaderType; } else { content.ShaderType = ext == ".vert" ? OpenTK.Graphics.OpenGL.ShaderType.VertexShader : OpenTK.Graphics.OpenGL.ShaderType.FragmentShader; } using (StreamReader reader = new StreamReader(stream)) { content.Source = reader.ReadToEnd(); } if (!ShaderHelper.BuildShaderProgram(content, manager.Log)) { content = null; } return(content); }