GLdouble 77 src/runtime/mini_opengl.h typedef void (*PFNGLORTHOPROC)(GLdouble left, GLdouble right, GLdouble 78 src/runtime/mini_opengl.h GLdouble bottom, GLdouble top, GLdouble 79 src/runtime/mini_opengl.h GLdouble near_val, GLdouble far_val);