Occlusion artifacts when rendering a window at 0,0

[TheSunCat]

Hyprland version

0.50.0 built from branch at commit 49d73d1

Regression

No

Describe the bug

I need to use renderWindow to draw a window with its decorations (border, shadow, etc) to my own framebuffer. The framebuffer has a size of the window's full bounding box. To render it, I change the window's m_floatingOffset so that it gets translated to the origin, then call renderWindow, then translate it back. Inspecting the framebuffer, the rendered window will have missing sections where other floating windows would be occluding my window, if it were moved to 0,0.

Here you can see that the right side tiled window, which I am rendering to my own framebuffer using the described technique, has a missing section that matches exactly what would be occluded by the small floating window, when the tiled window is translated to 0,0.

Reproduction steps

1. git clone https://git.allpurposem.at/mat/WiggleWobble.git
2. cd WiggleWobble && git checkout 0a0161ee6244890af440a2ba8cb2515ae2addea6
3. nix develop
4. ./run.sh
5. hyprctl plugin load $(pwd)/build//src/libwigglewobble.so
6. Create the layout seen in the screenshot, and resize the tiled images to trigger the rendering where the window is translated to the origin

System info and config

sysinfo.txt

[vaxerski]

your immediate solution is to make all windows have opacity 0.999, probably.

[TheSunCat]

Yep, that's why the repro steps require checking out an older commit. But it ends up overwriting window params which is not great.