Bottom clip edge, not a height; subtract DisplayPosY for viewport space.
Left clip edge in display coordinates, before framebuffer scaling.
Top clip edge in display coordinates, before framebuffer scaling.
Right clip edge, not a width; subtract DisplayPosX for viewport space.
Number of indices to render; triangle commands use multiples of three.
Starting index-buffer element, not a byte offset.
Renderer texture identifier stored as an unsigned 64-bit integer.
Internal payload byte offset in draw-list storage, or -1 without storage.
Copied callback payload size in bytes; zero means external user data.
Base vertex index; nonzero offsets require RendererHasVtxOffset support.
Draw-command scalars backed by native memory, not a snapshot.