Simple helper object for maintaining a vertex/fragment shader combination with GLSL.
Parameters: char const * name, char const * vertex_glsl, char const * fragment_glsl
Returns: LandGLSLShader*
Parameters: char const * name
Parameters: LandGLSLShader * self, char const * vertex_glsl, char const * fragment_glsl
Parameters: LandGLSLShader * self