Created attachment 141174 [details] This is my test file SUMMARY STEPS TO REPRODUCE 1.I followed the instruction below, but the result is incorrect How to save a PNG texture ...: https://docs.krita.org/en/reference_manual/layers_and_masks/split_alpha.html image : https://krita-artists.org/uploads/default/original/3X/5/e/5edaba938de0e53ebb45ff7ca086637b4fdf0255.png 2.Open the exported EXR in bledner and GIMP. 3.Turn off the alpha channel after GIMP is turned on Blender only outputs color information (equivalent to turning off alpha) 4.You will see wrong black borders and abnormal black translucent patches in Blender image :https://krita-artists.org/uploads/default/original/3X/0/1/0120e6370492a8bb23214944a97ff8269c6d4315.jpeg in GIMP image : https://krita-artists.org/uploads/default/original/3X/3/4/34494022ce60523678a06a322864c071d0225ae7.png OBSERVED RESULT These black edges are the outline of the alpha, and above, I deliberately painted a light gray on the alpha to represent translucency. After the export, the light gray area seems to be darkened, so my observation is When the color channel is output, it will be superimposed and mixed with alpha, which will affect the color channel information. EXPECTED RESULT After output, you get the clean color channel and alpha as in krita I think there must be an option to output it without changing any information in the file channel. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Commit 91bbbd5ffd with OpenEXR 2.5.5. tev shows our exported EXR has block artifacts round the bird's borders.
Created attachment 141279 [details] tev preview of the exported KRA
Created attachment 141313 [details] Exported EXR file opened in Krita and then split alpha, which looks different Curiously, if I open the exported EXR file back in Krita and split alpha into mask, the image looks completely different from what the Blender and GIMP screenshots show...