Bug #10078
Flag rendering on some parts, issues with png layer transparency
10%
Description
So I made a quick flag for the Asteroid Day thingy, and made it with transparent background. As it is a png, it uses transparency and some of the text and image (grey part) is semi-transparent.
Now, when using the flag in the game it works fine, except when using it on the Mk2 Cockpit and on the Boar booster (the issue might appear on some other parts, but I did not notice it).
When editing the flag after seeing this, I could replicate the look of it by tweaking opacity of the png layer. (Flag is the same, and it doesn't seem to depend on colour or curvature of the flag as it works well on a lot of other parts).
So this made me think that there might be an issue with the way that these two parts (Mk2 Cockpit and Boar) handle transparency.
I made a thread describing the issue in the forums (http://forum.kerbalspaceprogram.com/index.php?/topic/142873-flags-opacity-and-transparency-thresholds/) and was told that the issue might be caused by different type of shaders used in the part models, one that handles transparency properly and another one that does not.
(First bug report here, so if anything is missing, please tell me and I'll be happy to add it)
| Asteroid Day.png (11.2 KB) Asteroid Day.png | Flag used | ||
| screenshot0.png (557 KB) screenshot0.png | Screenshot showing the issue with the flag appearing differently on two parts | ||
| testflag.png (521 Bytes) testflag.png | Flag with transparency gradient used to test the bug | ||
| screenshot1.png (660 KB) screenshot1.png | Screenshot using the test flag | ||
| color_gradients_test.zip (2.61 MB) color_gradients_test.zip | Zip containing coloured test flags and the result in game |
History
#1
Updated by Gaarst over 8 years ago
Updated by According to NecroBones (on the forums), there was a bug affecting a translucent shader model after 1.1, and parts were changed to a "Alpha Cutoff" shader that doesn't handle transparency. After the bug was fixed in 1.1.3, these parts seem to have been forgotten and kept the Alpha cutoff shader. (This needs to be confirmed)
#2
Updated by TriggerAu over 8 years ago
Updated by 
- Status changed from New to Updated
- % Done changed from 0 to 10
Setting updated for confirmation during cleanup
#3
Updated by Gaarst over 8 years ago
- File testflag.png testflag.png added
- File screenshot1.png screenshot1.png added
- File color_gradients_test.zip color_gradients_test.zip added
- Status changed from Updated to Confirmed
Bug confirmed on a clean and new install.
Tried with a test flag with different levels of transparency showing the problem very obviously. I also included a zip containing the same flag but coloured in red, green and blue showing that the same issue affects colours transparency too.
#4
Updated by TriggerAu over 8 years ago
Thanks Gaarst