Billboards were displayed upside down when drawn to a render texture #2180
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…xture Render texture's view transforms seem to be inverted, so when drawing billboards, the 'up' vector given to set_look_at() is also inverted and so the billboard gets drawn upside down.
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Can someone confirm the bug, and if so the fix? |
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Sorry for the late response, I figured this had been forgotten about until I received an email the other day! Would you like me to provide an example that shows the bug? |
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That would be great yes. I just discovered today that it's finally possible to attach zip files to GitHub issues, so you can attach your example here directly. |
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Unfortunately it won't let me attach a zip file, despite saying it's a supported type... Anyway, here's a dropbox link instead, hopefully that works: https://dl.dropboxusercontent.com/u/3292249/billboard_inverted.zip you'll see that the Godot logo is the correct orientation in the editor, but when running the game it is flipped (when billboard mode is enabled and a viewport is being used) Project settings -> Display -> stretch_mode is set to Viewport, this is when the problem occurs, or when a viewport node + render texture is used. Let me know if you need anything else :) |
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Thanks for the example project, it indeed makes a lot of sense. I'm not 100% sure if your proposed fix tackles the bug or just works around an issue in set_look_at, but at any rate it seems to be better than no fix, so I'll merge :) |
Billboards were displayed upside down when drawn to a render texture
Render texture's view transforms seem to be inverted, so when drawing
billboards, the 'up' vector given to set_look_at() is also inverted and
so the billboard gets drawn upside down.