GL_EXT_separate_shader_objects
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_separate_shader_objects.gl.txt
GL_EXT_separate_shader_objects

	GL_ACTIVE_PROGRAM_EXT 0x8B8D
	void glActiveProgramEXT (GLuint program)
	GLuint glCreateShaderProgramEXT (GLenum type, const GLchar* string)
	void glUseShaderProgramEXT (GLenum type, GLuint program)