An XNA-style spritebatch library on top of sokol_gfx. Relies on premultiplied alpha for blending.
Takes care of orthographic projection internally.
Sorts the sprites that have been submitted to ensure the fewest draw calls are made.

Reworked the API to use contexts. Removed internal sorting of sprites (for now, at least). Adjusted naming. Introduced push_sprite_rect which lets you create a sprite to be rendered at a specific destination rectangle.

Unfrotunately sokol's 0 initialise to default idiom does not play nicely with color data, as 0'd out sg_color would ideally be set to a sensible default, white. However, 0'd out sg_color is also a valid color, transparent, which can result in undesirable effects if you are lerping color to transparent.

the sbatch_pipeline helps users make a pipeline object that is correct and usable for the sbatch rendering API.

Vertex shader snaps sprites to the nearest whole pixel

Allow sprites to be optionally tilted 45 degrees for depth-based custom pipelines.