1GL_AMD_stencil_operation_extended
2https://www.khronos.org/registry/OpenGL/extensions/AMD/AMD_stencil_operation_extended.txt
3GL_AMD_stencil_operation_extended
4
5	GL_SET_AMD 0x874A
6	GL_REPLACE_VALUE_AMD 0x874B
7	GL_STENCIL_OP_VALUE_AMD 0x874C
8	GL_STENCIL_BACK_OP_VALUE_AMD 0x874D
9	void glStencilOpValueAMD (GLenum face, GLuint value)
10