Here are the data structures with brief descriptions:

Cbitmap_rich	Bitmap rich type transparency is in the layout
Crender_floating_position	This struct is a point in 3d, which has coords save as double it is not recommended to use it for high performances rendering, because of the sh3eb-elf architecture, which does not support natively floating calculation
Crender_integer_point	This is a point which is used for 3d translations and rendering integer mode is the best solution to increase perfs, and that's why I didn't have implemented te floating_points yet
Crender_integer_position	This struct is a point in 3d, which has coords save as uint32_t this is the recommended type for high performance rendering, because the sh3eb-elf architecture is 32 bits
Crender_triangle	Triangle struct used to render fonctions