1GL_SUN_global_alpha 2http://www.opengl.org/registry/specs/SUN/global_alpha.txt 3GL_SUN_global_alpha 4 GL_GLOBAL_ALPHA_SUN 0x81D9 5 GL_GLOBAL_ALPHA_FACTOR_SUN 0x81DA 6 void glGlobalAlphaFactorbSUN (GLbyte factor) 7 void glGlobalAlphaFactordSUN (GLdouble factor) 8 void glGlobalAlphaFactorfSUN (GLfloat factor) 9 void glGlobalAlphaFactoriSUN (GLint factor) 10 void glGlobalAlphaFactorsSUN (GLshort factor) 11 void glGlobalAlphaFactorubSUN (GLubyte factor) 12 void glGlobalAlphaFactoruiSUN (GLuint factor) 13 void glGlobalAlphaFactorusSUN (GLushort factor) 14