[3D] Particles render through PBR objects with AlphaMode::Blend #320
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Katsutoshii
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May 14, 2024
djeedai
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May 18, 2024
Order particle effects based on the distance of the emitter to the camera. This ensures they're sorted during the `Transparent3d` render phase relative to other transparent objects. --------- Co-authored-by: Jerome Humbert <djeedai@gmail.com>
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Crate versions
bevyversion: 0.13.2bevy_hanabiversion: 0.10.0Describe the bug
In 3d scenes, particles render behind PBR objects with AlphaMode::Blend but Color.alpha = 1.0. Note that the particles do get occluded when AlphaMode::Opaque.
My use case is spawning particles in a world where I have a fog of war layer between the world and the camera, but the particles render through the fog.
Expected behavior
I expect particles to be occluded by objects that are between them and the camera, even if AlphaMode is not AlphaMode::Opaque
To Reproduce
I have a minimal reproduction in this repo: https://github.com/Katsutoshii/hanabi_blend.
Screenshots
Mp4 attached. The blue and green squares are both closest to the camera and the red square is behind the fireworks. This shows that with AlphaMode::Opaque (green), the particles are correctly occluded, but for AlphaMode::Blend (blue) the particles are not.
hanabi_blend_capture.mp4
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