gl.NewList(list, mode)
gl.NewList()
. All subsequent commands are placed in the display list, in the order issued, until gl.EndList() is called.
gl.NewList()
has two arguments. The first argument, list
, is a positive integer that becomes the unique name for the display list.
Names can be created and reserved with gl.GenLists() and tested for uniqueness with gl.IsList().
The second argument, mode
, is a symbolic constant that can assume one of two values:
#GL_COMPILE
#GL_COMPILE_AND_EXECUTE
Certain commands are not compiled into the display list but are executed immediately, regardless of the display list mode that is currently active. These commands are gl.AreTexturesResident(), gl.ColorPointer(), gl.DeleteLists(), gl.DeleteTextures(), and gl.DisableClientState(), gl.EdgeFlagPointer(), gl.EnableClientState(), and gl.FeedbackBuffer(), gl.Finish(), gl.Flush(), gl.GenLists(), gl.GenTextures(), gl.IndexPointer(), gl.InterleavedArrays(), gl.IsEnabled(), and also gl.IsList(), gl.IsTexture(), gl.NormalPointer(), gl.PopClientAttrib(), and finally also gl.PixelStore(), gl.PushClientAttrib(), gl.ReadPixels(), gl.RenderMode(), gl.SelectBuffer(), gl.TexCoordPointer(), gl.VertexPointer(), and all of the gl.Get() commands.
When gl.EndList() is encountered, the display-list definition is completed by associating the list with the unique
name list (specified in the gl.NewList()
command). If a display list with name list already exists, it is replaced only when gl.EndList()
is called.
gl.CallList() and gl.CallLists() can be entered into display lists. Commands in the display list
or lists executed by gl.CallList() or gl.CallLists() are not included in the display list being
created, even if the list creation mode is #GL_COMPILE_AND_EXECUTE
.
A display list is just a group of commands and arguments, so errors generated by commands in a display list must be generated when the list
is executed. If the list is created in #GL_COMPILE
mode, errors are not generated until the list is executed.
Please consult an OpenGL reference manual for more information.
#GL_COMPILE
or #GL_COMPILE_AND_EXECUTE
#GL_INVALID_VALUE
is generated if list
is 0.
#GL_INVALID_ENUM
is generated if mode
is not an accepted value.
#GL_INVALID_OPERATION
is generated if gl.EndList() is called without a preceding gl.NewList()
, or if gl.NewList()
is called while a display list is being defined.
#GL_INVALID_OPERATION
is generated if gl.NewList()
or gl.EndList() is executed between the execution of gl.Begin() and the corresponding execution of gl.End().
#GL_OUT_OF_MEMORY
is generated if there is insufficient memory to compile the display list. If the GL version is 1.1 or greater, no change is made to the previous contents of the display list, if any, and no other change is made to the GL state. (It is as if no attempt had been made to create the new display list.)
gl.Get() with argument #GL_LIST_INDEX
gl.Get() with argument #GL_LIST_MODE