GL_EXT_sparse_texture
http://www.opengl.org/registry/specs/EXT/sparse_texture.txt
GL_EXT_sparse_texture

	GL_TEXTURE_2D 0x0DE1
	GL_TEXTURE_3D 0x806F
	GL_TEXTURE_CUBE_MAP 0x8513
	GL_TEXTURE_2D_ARRAY 0x8C1A
	GL_TEXTURE_CUBE_MAP_ARRAY_OES 0x9009
	GL_VIRTUAL_PAGE_SIZE_X_EXT 0x9195
	GL_VIRTUAL_PAGE_SIZE_Y_EXT 0x9196
	GL_VIRTUAL_PAGE_SIZE_Z_EXT 0x9197
	GL_MAX_SPARSE_TEXTURE_SIZE_EXT 0x9198
	GL_MAX_SPARSE_3D_TEXTURE_SIZE_EXT 0x9199
	GL_MAX_SPARSE_ARRAY_TEXTURE_LAYERS_EXT 0x919A
	GL_TEXTURE_SPARSE_EXT 0x91A6
	GL_VIRTUAL_PAGE_SIZE_INDEX_EXT 0x91A7
	GL_NUM_VIRTUAL_PAGE_SIZES_EXT 0x91A8
	GL_SPARSE_TEXTURE_FULL_ARRAY_CUBE_MIPMAPS_EXT 0x91A9
	GL_NUM_SPARSE_LEVELS_EXT 0x91AA
	void glTexPageCommitmentEXT (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLboolean commit)
	void glTexturePageCommitmentEXT (GLuint texture, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLboolean commit)
