GL_ARB_texture_compression
http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_compression.txt
	GL_COMPRESSED_ALPHA_ARB 0x84E9
	GL_COMPRESSED_LUMINANCE_ARB 0x84EA
	GL_COMPRESSED_LUMINANCE_ALPHA_ARB 0x84EB
	GL_COMPRESSED_INTENSITY_ARB 0x84EC
	GL_COMPRESSED_RGB_ARB 0x84ED
	GL_COMPRESSED_RGBA_ARB 0x84EE
	GL_TEXTURE_COMPRESSION_HINT_ARB 0x84EF
	GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB 0x86A0
	GL_TEXTURE_COMPRESSED_ARB 0x86A1
	GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB 0x86A2
	GL_COMPRESSED_TEXTURE_FORMATS_ARB 0x86A3
	void glCompressedTexImage1DARB (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border, GLsizei imageSize, const void* data)
	void glCompressedTexImage2DARB (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data)
	void glCompressedTexImage3DARB (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void* data)
	void glCompressedTexSubImage1DARB (GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLsizei imageSize, const void* data)
	void glCompressedTexSubImage2DARB (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data)
	void glCompressedTexSubImage3DARB (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void* data)
	void glGetCompressedTexImageARB (GLenum target, GLint lod, void* img)