private void addAllAttributes( String shaderText )
	{
		final String ATTRIBUTE_KEYWORD = "attribute";
		int attributeStartLocation = shaderText.indexOf( ATTRIBUTE_KEYWORD );
		int attribNumber = 0;
		while ( attributeStartLocation != -1 )
		{
			if ( !( attributeStartLocation != 0
					&& ( Character.isWhitespace( shaderText.charAt( attributeStartLocation - 1 ) ) || shaderText.charAt( attributeStartLocation - 1 ) == ';' )
					&& Character.isWhitespace( shaderText.charAt( attributeStartLocation + ATTRIBUTE_KEYWORD.length() ) ) ) )
				continue;

			int begin = attributeStartLocation + ATTRIBUTE_KEYWORD.length() + 1;
			int end = shaderText.indexOf( ";", begin );

			String attributeLine = shaderText.substring( begin, end ).trim();
			String attributeName = attributeLine.substring( attributeLine.indexOf( ' ' ) + 1, attributeLine.length() ).trim();

			setAttribLocation( attributeName, attribNumber );
			attribNumber++;

			attributeStartLocation = shaderText.indexOf( ATTRIBUTE_KEYWORD, attributeStartLocation + ATTRIBUTE_KEYWORD.length() );
		}
	}