GL_EXT_geometry_point_size
http://www.opengl.org/registry/specs/EXT/geometry_shader.txt
GL_EXT_geometry_point_size

	GL_GEOMETRY_SHADER_BIT_EXT 0x00000004
	GL_LINES_ADJACENCY_EXT 0xA
	GL_LINE_STRIP_ADJACENCY_EXT 0xB
	GL_TRIANGLES_ADJACENCY_EXT 0xC
	GL_TRIANGLE_STRIP_ADJACENCY_EXT 0xD
	GL_LAYER_PROVOKING_VERTEX_EXT 0x825E
	GL_UNDEFINED_VERTEX_EXT 0x8260
	GL_GEOMETRY_SHADER_INVOCATIONS_EXT 0x887F
	GL_GEOMETRY_LINKED_VERTICES_OUT_EXT 0x8916
	GL_GEOMETRY_LINKED_INPUT_TYPE_EXT 0x8917
	GL_GEOMETRY_LINKED_OUTPUT_TYPE_EXT 0x8918
	GL_MAX_GEOMETRY_UNIFORM_BLOCKS_EXT 0x8A2C
	GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS_EXT 0x8A32
	GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_EXT 0x8C29
	GL_PRIMITIVES_GENERATED_EXT 0x8C87
	GL_FRAMEBUFFER_ATTACHMENT_LAYERED_EXT 0x8DA7
	GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT 0x8DA8
	GL_GEOMETRY_SHADER_EXT 0x8DD9
	GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_EXT 0x8DDF
	GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT 0x8DE0
	GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_EXT 0x8DE1
	GL_FIRST_VERTEX_CONVENTION_EXT 0x8E4D
	GL_LAST_VERTEX_CONVENTION_EXT 0x8E4E
	GL_MAX_GEOMETRY_SHADER_INVOCATIONS_EXT 0x8E5A
	GL_MAX_GEOMETRY_IMAGE_UNIFORMS_EXT 0x90CD
	GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS_EXT 0x90D7
	GL_MAX_GEOMETRY_INPUT_COMPONENTS_EXT 0x9123
	GL_MAX_GEOMETRY_OUTPUT_COMPONENTS_EXT 0x9124
	GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS_EXT 0x92CF
	GL_MAX_GEOMETRY_ATOMIC_COUNTERS_EXT 0x92D5
	GL_REFERENCED_BY_GEOMETRY_SHADER_EXT 0x9309
	GL_FRAMEBUFFER_DEFAULT_LAYERS_EXT 0x9312
	GL_MAX_FRAMEBUFFER_LAYERS_EXT 0x9317
