-unsigned get_gl_predicate(Predicate pred)
-{
- switch(pred)
- {
- case NEVER: return GL_NEVER;
- case ALWAYS: return GL_ALWAYS;
- case LESS: return GL_LESS;
- case LEQUAL: return GL_LEQUAL;
- case EQUAL: return GL_EQUAL;
- case GREATER: return GL_GREATER;
- case GEQUAL: return GL_GEQUAL;
- case NOTEQUAL: return GL_NOTEQUAL;
- default: throw invalid_argument("get_gl_predicate");
- }
-}
-