d0cf4a4a8b
Retiming was drawn for all strips in one draw call. During strip transformation, if strips overlap, one strip should cover the other. But all keys were drawn on top. Retiming drawing API was changed to draw 1 strip, so overlapped strips can be drawn first, followed by overlapping strips. Since retiming drawing is also layered, single draw call was split into drawing continuity line, keys and speed text.