public Texture2D ParseImageProgram(string source, ref DateTime timeStamp, ref TextureDepth depth)
{
_lexer = new idLexer(LexerOptions.NoFatalErrors | LexerOptions.NoStringConcatination | LexerOptions.NoStringEscapeCharacters | LexerOptions.AllowPathNames);
_lexer.LoadMemory(source, source);
return ParseImageProgram(ref timeStamp, ref depth, false);
}