EMI: Skip chores that are internally marked as stopped when drawing components.

The playing chores list may contain chores that have been stopped during the current frame. Stopped chores will be removed from the list on the next costume update. Drawing stopped components caused flicker when entering the closeup at Stan's house.
EMI: Sprite drawing fixes for OpenGL Shaders renderer.
EMI: Read depth write and alpha test flags from sprite files.
EMI: Print warning if an unknown blend mode value is encountered when parsing a sprite file.
GRIM/EMI: Move implementation of setFollowBoxes from header to source file.
EMI: Clean up sprite drawing in OpenGL.
EMI: Share Materials between Costumes.

Sometimes a texi component may refer to a material that was initialized by some other costume than the owner costume of the texi component. For example, the candles in gmi have a costume "fx/aura1.cos" that controls the animation of a material originally initialized by a sprite component of "fx/candle.cos".
EMI: Sprite fixes for TinyGL renderer.

Note that most of this is currently commented out due to lack of proper blending in TinyGL. Once blending is properly implemented the commented out parts can be enabled.