GL_EXT_occlusion_query_boolean
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_occlusion_query_boolean.txt
GL_EXT_occlusion_query_boolean

	GL_CURRENT_QUERY_EXT 0x8865
	GL_QUERY_RESULT_EXT 0x8866
	GL_QUERY_RESULT_AVAILABLE_EXT 0x8867
	GL_ANY_SAMPLES_PASSED_EXT 0x8C2F
	GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT 0x8D6A
