GL_ARB_texture_view http://www.opengl.org/registry/specs/ARB/texture_view.txt GL_ARB_texture_view GL_TEXTURE_VIEW_MIN_LEVEL 0x82DB GL_TEXTURE_VIEW_NUM_LEVELS 0x82DC GL_TEXTURE_VIEW_MIN_LAYER 0x82DD GL_TEXTURE_VIEW_NUM_LAYERS 0x82DE GL_TEXTURE_IMMUTABLE_LEVELS 0x82DF void glTextureView (GLuint texture, GLenum target, GLuint origtexture, GLenum internalformat, GLuint minlevel, GLuint numlevels, GLuint minlayer, GLuint numlayers)