PNG writer: wrong alpha
Original Reporter info from Mantis: Valdas
-
Reporter name: Valdas Jankūnas
Original Reporter info from Mantis: Valdas
- Reporter name: Valdas Jankūnas
Description:
Test app "pngtest.pp" (slightly modified test app from #7791 (closed)) illustrates problem:
- entire image filled with black color with alpha=transparent,
- in image center painted small rectangle with nontransparent red color,
- across image painted cross with nontransparent black color,
- image saved under name "test.png".
If i open resulted image in Gimp, i realize that black cross also becomes transparent (see "actual_look.png").
Seems that PNG writer there all black colors (transparent and not) writes as transparent.
Mantis conversion info:
- Mantis ID: 11217
- OS: KUbuntu
- OS Build: 7.10
- Platform: i386 32bit
- Version: 2.2.0