better error message report when png decoder errors

guibec / rpgcraft

RPGCraft - Minecraft / Terraria / RPGMaker mashup

MIT License

8 stars 2 forks source link

Closed jstine35 closed 5 years ago

jstine35 commented 5 years ago

Main change: Error includes the filename that failed to open.
Secondary change: added sanity check for image size overflow (unsigned->signed narrowing)
Includes some minor change to xString API for converting from int2 and int4 to string